Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

154

Transcript of Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

Page 1: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� ��������� �

������������������ ��!#"%$&��')(+*�!,�-��.%/%'0!#�1��*2!3�&45�6.7�1*7�98:"%;<�=� > ?A@,BACD@,E5F�@,GIHAJ=K0LMLONPRQ%SUT�VXW=QZY

[6\^],_1`AaD\+a,bdceMf#gA`ih�`=fMe-j h�],alk�mD\3bonXpqe-jsrut vxw0j=j�\,yzy

{5|#{ }�~�~��5~��d�x~�~��������#�����d�R�i�����:�������i�,�����+���%�

�o�O�����,�q� G � @�C @3¡ �^� @ � C � @5Eu¡-C � @,Eu¡0C ���,�I�O¢=£ @#G ¤¦¥ �§¢=¨R� FA©ª@ � C ��� ¡0¤¦¤§@ £ @,GDG � G �+� G GD@ � C �¦¢O¨��,�<£ @ �¬«�­�®d®��^¯l°I± @² �q¢�³ C £ @,´ ¢ @ ² � ¡-C�C � @,¥�¡0GD@�C �A£ ¡ ¥�µ·¶ � G�GD@#¡ � �q¢�� C � F�@ � ¤¦¡qG � ´=@ £ ¤�¡-CD@,G °d¸O� G ¢O� ² � C ² � ¤¦¤ � �A¹R� @:C �Rº<¢O� ²C � ¡-CIC � @#¥¡0GD@ �+� E5F �¦¢ ¡0C � G � ¡0¤ � FA©ª@ � C � C � ¡0CIB �M�D� @ �D��� @,G CD¡ �¦¢ @,»¼CDG @#Eu¡0¤%BOG � B�@#G½C � @ � ² �=�¦�^� ¡qG @x¾q@#G ¥ �=� @+¶ � ¤¶ � GoC � @ �+� E¿E �O¢O��� ¡0C �¦�q¢ ¡ ¢=£À� C � G^¡ ¨ @ � ¶ �¦¢ ¶ � G Eu¡-C �§�M¢�°Ái�A£A� ¤ � C � @ £ @+´ ¢O� C �§�M¢5� ¶ ­�®d®�� J ² @ � ¡ ¢5� C � ¤§¤ £A��� �,�=�D� C � @�F �§¨I�q� C ¤ �§¢ @ � ¶=C �O�����+�q� G � @ °%�o� @ �,�q¢ C @ ¢ C �7� ¶OC �O�¦��+�M� G � @ � ¡ ¢ F�@ £A� ¾ �¦£ @ £R�¦¢ C � ¶ �q� GoG �q�O¨M� ¤§¥¬@# � ¡q¤�B=¡0G C �#°·Ã�� G·´�G � C�B�¡0G C ² � ¤§¤UF�@�@,»ABO¤¦¡ �§¢À�½� E¿@ � ¶6C � @XF=¡ �½����+�M¢=� C G �=� C �§�M¢=�I� ¶Ä@#G G � G µ �+� GDGD@ � C �§¢=¨R�+�A£ @ �#°¿Å @+»<C ² @ ² � ¤¦¤ �½�=� ²�Æ ¢ @ ¨ ¡0C � ¾q@¬G @ �½� ¤§C �DÇÀ�½�O� ² �¦¢O¨ ¤ � E � C^¡-C �§�M¢=� J� G)F �M�O¢=£O� J �M¢ C � @ÈB�@#G½¶ � G Eu¡ ¢�� @ � ¶ �+�A£ @ �#°É�o� @�C ² � B�¡0G C � ¡qF � ¾M@�¡0GD@i@ �D� @ ¢ C � ¡0¤¦¤§¥ �+� E5F �¦¢ ¡0C � G � ¡0¤ �¦¢¢ ¡0C � GD@qJ ² � C � ¶Ê@ ² �,� E¿B � C^¡-C �¦�q¢ ¡0¤�C � @,E¿@ �#°i± @ ² � ¤¦¤ ¨ @+C �¦¢ C � C � @ �,� E¿B � C^¡-C �¦�q¢ ¡0¤Ä¡ � B�@ � C ���¦¢ C � @RC �=� G £¡ ¢�£ ¶ �M� G½C � B=¡qG½C ��� ¶6C �O���d�+�q� G � @ °��o� @IC �O� G £ B=¡qG½C � ¶7C � @ �,�q� G � @ ��� ² � @,GD@ ² @�¶ �<�,�=�o�q¢ ¡0¤ ¨q� G � C � E ��� C^¡ � ºA�¡ �D� �<�,� ¡0C @ £ ² � C �i­�®d®�� ¡ ¢=£��½� E¿@ � � ¤ � C �§�M¢=� C � C � @ � @XCD¡ �½ºA�#°Ë¸7�¦¢ ¡q¤§¤¦¥qJ �¦¢ C � @:¶ �q� G C � B=¡0G C ² @ ² � ¤¦¤ £A��� �,�=�D�� � E¿@ �,�q¢=� @# � @ ¢=� @ ���M¢ @ � ¡ ¢�£ @,G � ¾M@ �¦¢Ì�,� E¿B � C^¡-C �¦�q¢ ¡0¤ �+� E¿BO¤¦@+» � Cª¥ÀC � @ � GD¥�¡ � ¡RGD@ � � ¤ÍC � ¶·C � @¬@+» ��� CD@ ¢=� @� ¶ ­�®d®�� ¡ ¢=£ ¶ÊG � EÎC � @:¡q¤ ¨M� G � C � E �¦�I� ¡qB=¡0F � ¤ � C � @ �d�½� G G �q�O¢�£A�§¢=¨ C � @,E °

Ï�нÏËÐ½Ï Ñ�ÒAÓ�Ô�Õ�Ó�Ö=Õ×Ö=Ø�Ù^Ø�ÖOØ6Ô�Ú�Ø6Û

? �¦¢=� @XC � @ � � FA©ª@ � C �¦�  �O� C @ � ¤ £ JAC � @#G @�¡qG @XBO¤¦@ ¢ Cª¥ � ¶6CD@+»<C �#°�Ü @+C ² @ ² �M¢�³ Cd¶ � ¤¦¤ � ² ¡ ¢ ¥ �q¢ @ � ¶7C � @,E °ËÝ @,GD@¡0GD@ �+� E¬E¿@ ¢ C �o�q¢��½� E¿@ � ¶7C � @,E °

N °��o� @IC @+»<C�F<¥ Á ¡ �+±Þ� ¤§¤ � ¡0E � ¡ ¢�£ ?<¤ � ¡ ¢ @uß à-á-â °

N+µ^N

Page 2: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

« ¡ ¯)�o�O���d��� B �¼� � � F=¤§¥uC � @�E �M� C�G @,¶Ê@,GD@ ¢=� @ £ C @,»¼C �¦¢® ?Oã« F ¯Àä�¢ ¶ � G C �O¢ ¡0C @#¤§¥MJ � C ���o¨ @,C½C �§¢O¨u�M� C £ ¡-C @ £ B=G @,C½Cª¥R¶�¡ � C °«1�#¯ÀÝ ¡ �d£ @+C^¡ � ¤§@ £��+� ¾q@#GD¡ ¨ @ � ¶ « C �<�¼¯ Eu¡ ¢ ¥R¶�¡0E � ¤ � @ �d� ¶ �+�A£ @ �,°«�£=¯i®Ä� ¾q@#GD¡ ¨ @ � ¶%¡q¤ ¨M� G � C � E �o�¦�o¢=� C � �¬¨M�<�<£�°

K °��o� @IC @+»<C�F<¥R¾-¡ ¢iå6�§¢ C5ߧNqN à,â °« ¡ ¯)�o� @�F �<�qº���� E �=�^� E � G @ �,�q¢=�,�¦� @�¡ ¢=£À� ¡ ¢=£ ¥�C � ¡ ¢Á ¡ �,±Þ� ¤¦¤ � ¡0E � ¡ ¢=£ ?<¤ � ¡ ¢ @ °·­ ¡ � � @#GÄC �u¨ @,C

C �R� � E¿@ � ¶7C � @�GD@ � � ¤§C �o� @#G @MJ � ¶�C � @,¥�¡qG @�¡ ¾-¡ � ¤�¡0FO¤¦@ °« F ¯ ?¼C � ¤¦¤1J=C � @�@#E¿B � ¡ � ���o�¦� E � GD@ �+� E5F �¦¢ ¡-C � G � ¡q¤�C � ¡ ¢ ¡q¤ ¨M� G � C � E �¦�q°

æ °�ç CD@+»<C�F<¥)è�¤�¡ �<� C:ßÍN3é â °« ¡ ¯ è �<�qº ² ¡ � CD¡qG ¨ @+C C @ £ ¡-C�@ ¢O¨q�¦¢ @#@,G � G^¡-C � @,GoC � ¡ ¢ Eu¡-C � @,Eu¡0C ���,� J � G � � C � @:¡ � C �O� G � ¤¦¡ � E �#°« F ¯�Ü @+CxC � @ �+� ¾q@#GD¡ ¨ @ �¦� @+» � @#¤§¤¦@ ¢ C3J7@ � B�@ �,� ¡q¤§¤¦¥¶ � G �§¢��½�¦¨q� C#J�E � C � ¾-¡0C �¦�q¢=� J £ @+´ ¢O� C �¦�q¢�� J%@,¾M@ ¢ ¡0¤ ¨q� µ

G � C � E �«1�#¯À�o� @IEu¡ �¦¢)£ G^¡ ² F=¡ �^º¬��� C � ¡-C � C �����q� C � ¶7BOG �¦¢ Co¡ ¢=£R¢=� Co@#¡ � � ¤§¥R¡ ¾-¡ � ¤�¡0FO¤¦@ «Ê¢=� C �§¢ÀÁiêª� ¤ � F=GD¡qG ¥MJ

@ ° ¨=°ë¯l°á °��o� @ Ý ¡ ¢�£ F �<�MºR� ¶ ®Ä�A£A�§¢=¨¿�o� @ � GD¥�ß ìqì â °

« ¡ ¯�Ã�í @,G � @+»<C @ ¢=�½� ¾q@ �,� ¾q@,G^¡ ¨ @ � ¶7Eu¡ ¢ ¥RGD@ � @ ¢ CoC � @#E¬@ �,°« F ¯ ? � E¬@,C � E¿@ � @,» � @ �D�½� ¾q@ °�«1­�° ¨=° N æ LxB=¡ ¨ @ ��� ¶%CD¡qFO¤§@ � ¶%F�@ � C º<¢O� ² ¢À�,�A£ @ �#° ¯«1�#¯ è � C �,�q¢ CD¡ �§¢�� Eu¡ ¢ ¥ �¦¢ C @,GD@ � C �¦¢O¨��^� ¡0BACD@,G �,°o­�° ¨=° J �^� ¡qBAC @#G �M¢ ¡q¤ ¨ @,FOG^¡ ��� µ ¨ @ � E¿@+CDG ¥ �,�A£ @ � J�¡ ¢=£

C � @ �^� ¡0BACD@,G �M¢À£ @#@,BAµ � B=¡ � @X¡qBOBO¤ �¦� ¡-C �§�M¢=�,°

{5|lî ï���ð0�x~Ëñò�I���+�x�ôó������5~�õ

­ ¾M@ ¢ C �O�q�=¨q� C �O���I�,�q� G � @ �¦�I�M¢È�+�A£A�¦¢O¨ C � @ � GD¥qJ ² @ � CD¡0G C ² � C � ¡�F=G � @+¶ �,� ¾q@#GD¡ ¨ @ � ¶ �§¢ ¶ � G Eu¡0C �¦�q¢ C � @ � G ¥ °ö ¡0G C � ¶%C � @�GD@#¡ �½�M¢����o�O�¦� C � G ���0°·®Ä�A£A�¦¢O¨ C � @ � GD¥ ² ¡ �o�¦¢O� C � ¡0C @ £ F<¥uC ² �u� @#E �§¢ ¡q¤�B=¡qB�@#G �#÷

N °dêø¢ N3é0áMì=JO? � ¡ ¢=¢O�q¢ ² G � C @�¡ £ @+C^¡ � ¤§@ £ C GD@#¡-C �¦� @ �q¢ C � @�Eu¡0C � @#E¿¡0C ���,� F�@ �=�§¢=£��,� E¿E �O¢=�¦� ¡-C �¦�q¢ ߧN#LqL-â °K °dêø¢ N3éMH0L=J Ý ¡0E¿E �¦¢O¨ J7E � C � ¾-¡-C @ £ F<¥iC � @¿CD¡ �½ºi� ¶ �,� GDG @ � C �¦¢O¨�� Eu¡q¤§¤ ¢<� ExF�@#G � ¶Ä@#G G � G ���q¢ E¿¡ ¨q¢ @,C ���

� C � G^¡ ¨ @�E¿@ £A� ¡OJ ² G � CD@IC � @X´=G � CoB�¡0B�@,G �¦¢ CDG �A£A���+�¦¢O¨ @,GDG � G½µ �+� G GD@ � C �¦¢O¨5�+�A£ @ � ß á¼ì â °

êø¢ C �=�¦� ¤§@ � C � G @ ² @ ² � ¤§¤ £A��� �,�=� � C � @5E¿¡ �§¢ GD@ � � ¤§C � ¶ÊG � EùC � @x? � ¡ ¢O¢O�M¢ B=¡0B�@,G3J ² �O���^� ¶ �q�=¢=£ @ £ C � @:C � @ � G ¥� ¶ �¦¢ ¶ � GDEu¡-C �¦�q¢ J ² �O� ¤§@R¡q¤ � ���+� µú¶ �q�=¢=£A�¦¢O¨&« ² � C �ûÝ ¡qE¿E �¦¢O¨<¯ C � @uC � @ � G ¥ � ¶o@,GDG � G½µ �+� G GD@ � C �¦¢O¨��+�A£ @ �,°R�o� @C � @ � GD¥ � ¶ �¦¢ ¶ � G Eu¡-C �§�M¢ BOG � ¾ �¦£ @ � C � @¿E � C � ¾-¡-C �§�M¢ ¶ � GIEu¡ ¢ ¥Â � @ � C �¦�q¢����¦¢Ì�,�A£A�§¢=¨ C � @ � GD¥¡ ¢�£�� � ² @ ² � ¤§¤� C �=£ ¥�C �O��� ´=G � C °? � ¡ ¢O¢O�M¢ü�+�M¢=�½��£ @#G @ £ C � @ÌBOG � FO¤¦@,E � ¶�C ² � B=¡qG½C � @ � J � ¡ ¥ ç ¤ �¦� @È¡ ¢=£ è � F�J ² �O� ² ���½� C �ý�+� E¿E �O¢O��� ¡-CD@£A�¦¨q� CD¡q¤§¤¦¥ °Îêø¢ B=¡0G C ���+� ¤¦¡qG#J ç ¤ ��� @ ² ���½� @ � C �2� @ ¢=£ ¡sE¿@ �D� ¡ ¨ @�C � è � F � ¾M@,G)¡ � @#G½C^¡ �¦¢þ£A�¦¨q� CD¡q¤ �^� ¡ ¢O¢ @,¤ °? � ¡ ¢O¢O�M¢)�+�M¢=� �¦£ @#G @ £ F � C � Æ ¢O�q��� @#¤§@ � �DÇ ¡ ¢=£ Æ ¢O�q��� ¥ Çx�^� ¡ ¢=¢ @,¤ �,°�± @ � C^¡0G C�F<¥ �,�q¢=� �¦£ @,G �§¢O¨ C � @ Æ ¢O�q��� @#¤§@ � �DÇ� ¡ � @ °

N+µªK

Page 3: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

Ï�Ð1ÿdÐ½Ï ����� ÛMØ��ªØ6Û<Û&Ú��dÕ�� Ôêø¢ C �O�¦�¿� ¡ � @qJ%C � @ �^� ¡ ¢O¢ @,¤ � B�@#G½¶Ê@ � C ¤¦¥ÌC G^¡ ¢=� E � C � C � @ÀF � C �xç ¤ ��� @ ² ¡ ¢ C � C �È� @ ¢�£ C � è � F °ÌÝ�� ² @,¾q@#G#J ² @E �§¨M� C � Eu¡ ¨M�§¢ @IC � ¡-CoC � @ �^� ¡ ¢O¢ @,¤ �¦�d� ¤ � ² J � �¿�q� G ¨M� ¡0¤ ��� C �u�+� E¿BOG @ � � C � @ �§¢ ¶ � G Eu¡0C �¦�q¢ ² @ ² ¡ ¢ CÄC �u� @ ¢=££A� ² ¢ C � ¡ � ¶Ê@ ² F � C � ¡ � B �M�D�½� FO¤¦@ °��o� @ ¢ ² @ � @ ¢=£ C � @ � @�F � C � ¡ � G �¼� � C � @ �^� ¡ ¢O¢ @,¤�¶ � G�è � FÀC � G @ � @ � ¾q@�¡ ¢=££ @ �+� E¿BOGD@ �D�#°%± @ � CD¡0G C ² � C � ¡ ¢ @+»O¡0E¿BO¤¦@ ² �O�¦�^�i� �O� ² ���O� ² C � @ í @ � C �½�=�^� ¡ �+� E¬B=G @ � � �§�M¢)�D�^� @,E¿@ °

Ï�Ð1ÿdÐ1ÿ �ÞÔ�Ø �oÓ������½Ø®Ä�q¢��½��£ @,G�C G^¡ ¢=� E � C C �¦¢O¨ C � @ �+�M¢ CD@ ¢ C ��� ¶Ä¡�B � @ � @ � ¶·B�¡0B�@,G3J ² �=�¦�^���,�q¢ CD¡ �§¢���� � E¿@ � ¡ ¢=£ ² G � C C @ ¢ Eu¡-CD@,G � ¡q¤�q¢�� C#J�F¼¥R¶�¡-» °Ëê ¶�C � @�B�¡0B�@,G � ¡ � © �=� C�¡ � Eu¡q¤§¤6¡qE �q�O¢ C � ¶�FO¤�¡ �^º CD@+»<C �q¢ ¡ ² �O� C @�F�¡ �^º<¨ G �q�O¢�£ J ² � @ ¢i� C �¦�£A�¦¨q� C ��� @ £R� CoE �¦¨q� C �+�q¢��½��� C � ¶7éMé�� L ³ � ¡ ¢=£ N���N ³ �#°%å @+C ³ �o� ¡ ¥x¶ � G�C � @ � ¡ º @ � ¶7¡qG ¨M� E¿@ ¢ C·C � ¡-C ² @ ² ¡ ¢ C·C �C G^¡ ¢�� E � Co¡5E¬@ � � ¡ ¨ @ �¦¢ ² �O���^� @3¡ �^� F � C �¦���¦¢=£ @,B�@ ¢�£ @ ¢ C ¤¦¥RL ² � C � BOG � F=¡qF � ¤ � Cª¥ ° éqéx¡ ¢=£ N ² � C � BOG � F=¡0F � ¤ � Cª¥° LON °®Ä�q¢��½��£ @,GËC � @�¶ � ¤¦¤ � ² �¦¢O¨ @ ¢��+�A£A�¦¢O¨5�D�^� @,E¿@ ÷%± @ � BO¤ � CËC � @�E¿@ �D� ¡ ¨ @ � B �§¢ C � FO¤ �<�^ºA��� ¶ËN#LXF � C �#°�ê ¶UC � @�FO¤ �<�^º��� LMLqLqLMLqLMLqLqLMLOJ ² @ � @ ¢=£ C � @xF � C�L °Iê ¶ËC � @xF=¤ �A�^ºÀ�¦� ¡ ¢ ¥¼C �=�§¢O¨ @,¤ � @MJ � ¡ ¥��6J ² @ � @ ¢=£ C � @ � CDG �¦¢O¨ N�� °�Å�� ²C � @�@+»AB�@ � CD@ £ ¤§@ ¢O¨ C ��� ¶6C � @�@ ¢��+�A£A�¦¢O¨¿� ¶�¡xF=¤ �A�^ºR���,÷

N�� ö G#ß FO¤ �A�^ºR�¦� LMLqLMLqLqLMLqLMLqL-â��ÞNMN�� ö G3ß F=¤ �A�^ºR���d¢O� CdLMLqLMLqLqLMLqLMLqL-â � NMN�!sN3L#"² � @#G @$" ÷ � ö G#ß FO¤ �<�^º��¦� LMLqLMLqLqLMLqLMLqL-â%�'& éMé�(*)$+,& é °ÄÝ @ ¢=� @XC � @:@,»<B�@ � C @ £ ¤§@ ¢O¨ C �À� ¶7C � @:@ ¢=�+�A£A�¦¢O¨u� ¶ �q¢ @N#L¬F � C�FO¤ �A�^º���� ¡-C�E �¼� C�K¬F � C �#°Ä�o�<�=� C � @ � G �¦¨q�¦¢ ¡0¤UE¿@ �D� ¡ ¨ @ � ¡ � F�@#@ ¢�,� E¿BOGD@ �D� @ £ C � ² � C �O�§¢ KqL�� � ¶ � C �¤¦@ ¢O¨ C � -�«1¸O�<�A£ ¶ � GoC �O�M�O¨q� C ÷/.�� ² @XGD@#¡q¤§¤¦¥ ¢ @#@ £ C � @�BOG � F�¡0F � ¤ ��� C ��� E �A£ @#¤�C � ¡ �^� @ � ¾M@IC �O���d�+� E¬B=G @ � � �§�M¢ ã ¯® ¡ ¢ ² @ £A� F�@,C½C @#G^ã �o�O�¦���¦� @+»O¡ � C ¤¦¥�C � @5 � @ � C �§�M¢ ? � ¡ ¢=¢O�q¢ G^¡ ��� @ £ ¡ ¢=£ ¡ ¢=� ² @,GD@ £ ² � C �i�O��� C � @ � GD@,E �M¢¢O�M�¦� @,¤¦@ �D�o�+�A£A�¦¢O¨=°

0 *�!,�-�21U>�7� ¡ ¢ ¡q¤§¥ � @ �O� ² E ���^� ¡ £O�¦� C G � F � C �¦�q¢i�+�M� ¤ £ F�@ �,� E¿BOGD@ �D� @ £ J�? � ¡ ¢O¢O�M¢À�¦¢ C G �A£A�=� @ £��½� E¬@XEu¡-C � @,Eu¡0C ��� ¡0¤£ @,´ ¢O� C �¦�q¢=� ¡ �D�½�A�+� ¡-CD@ £ ² � C ��¦¢ ¶ � GDEu¡-C �§�M¢�°d�o� @ � �q� G � @ � ¶ �¦¢ ¶ � G Eu¡-C �§�M¢i�¦� E �<£ @,¤¦@ £ ¡ � ¡uBOG � F=¡qF � ¤ � Cª¥ £A��� µC G � F � C �¦�q¢ JM¡ ¢�£ ¡IE¿@ �D� ¡ ¨ @ ��� ¡XGD¡ ¢=£A� Eɾ-¡0G � ¡qFO¤§@ £ G^¡ ² ¢ ¶ÊG � E C �O���Ë£A��� C G � F � C �¦�q¢�°��o� @ ¨q� ¡0¤ � ¶ �,� E¿BOGD@ �D�½�¦�q¢��� C � @ ¢=�+�A£ @xC � @ � � BOB � G C � ¶·C � @¬BOG � F=¡qF � ¤ � Cª¥ � B=¡ � @ «��=�½�¦¢O¨ J � ¡ ¥ÀF �¦¢ ¡0GD¥ � CDG �¦¢O¨M�^¯�� � ¡ � C � E �¦¢O� E ��� @¬C � @@+»AB�@ � C @ £ ¤¦@ ¢=¨ C �9� ¶�C � @uE¿@ �D� ¡ ¨ @ °��6� ¡ ¢ ¥ � �q� G � @ «Ê� G:E � GD@ �+� G GD@ � C ¤¦¥qJUC � ¡ ¢ ¥ £A��� C G � F � C �¦�q¢�¯ J�? � ¡ ¢O¢O�M¢¡ �D� �§¨M¢ @ £ ¡ ¢=�q¢ µ ¢ @ ¨ ¡-C � ¾M@dG @3¡0¤ ¢<� ExF�@#G#JMC � ¡-C � @�C @#G E¿@ £ Æ @ ¢ CDG � B<¥ Ç J-C � ¡-CÄE¿@3¡ � � G @ � C � @ �¦¢ ¶ � GDEu¡-C �§�M¢R�+�q¢ µC @ ¢ C � ¶�C � @ £A��� CDG � F � C �§�M¢�°�Ý @:C � @ ¢��½�=� ² @ £ C � ¡-C�C �O���  � ¡ ¢ C � Cª¥ « C � ² � C �O�¦¢ ¡ ¢ ¡ £O£A� C � ¾q@�CD@,GDE � ¶ w-j�\¿m,kz_�¯E¿@#¡ �½� GD@ � C � @ �+� E¬B=G @ � � � F � ¤ � Cª¥ � ¶%¡¬F � C °�o� @ � � E¬B=¤§@ � CRB �M�D�½� FO¤¦@ £A��� CDG � F � C �§�M¢Þ�¦� ¡ �,�q�¦¢43=� B�J �§¢ ² �O���^�2� @#¡ £O�u� ¡ � BOG � F=¡qF � ¤ � Cª¥65 ¡ ¢=£ CD¡ � ¤ �R� ¡ �BOG � F=¡qF � ¤ � Cª¥N�!�5 °��o� @�@ ¢ CDG � B¼¥R¡ � � �¦¨q¢ @ £ C � C �O���d�¦�#÷

7&« 5 ¯98�:<;�=5�¤ �q¨#> N5 � « N�!?5 ¯ ¤ �M¨@> NN�!�5 &

± @ � ¡ ¢À¨ @ ¢ @,G^¡0¤ ��� @�C �O���d¢O� C �¦�q¢ C � ¡0GDF � C G^¡0GD¥ £A�¦� C G � F � C �¦�q¢��,°

A ;@B�*%�Ê!#�1��*DC��EC [6\,_GF�mD\¬e-j�p�HËj�kz_ \JI,\+_LKÄe-j�fRy§\,_�M�mD\¬eJN�a wMmDeMm+kzyÍkz_1p�f-kOIl_1alk�m,`A_úk�w-jÌw0jPFQKËkERz\SRTKUM�÷VFDWß L%X,N,âZY kz_Êg$[]\#^�_QM« � ¯ �ÉN R·[7\+_2` mD\�eXa e0j�fqw�acb-e-alk�eMm+y¦\If0kOIl_1alk�m,`A_ \^f:eM]^]Dw0a f-kzjVd:_øw�M6Rfe�gO\,j�_ÊgO\�\,j=_úa wgN�p

N+µ æ

Page 4: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

w*h�M kOI ( b 7 «EM�¯ 8i:<;�kj\�^�_ M�« � ¯ ¤ �M¨ > NM�« � ¯ &�o� @ ¢O�M�¦� @,¤¦@ �D�o�+�A£A�¦¢O¨ C � @ � GD@,E � ¶�? � ¡ ¢O¢=�q¢ @ �D� @ ¢ C � ¡q¤§¤¦¥ � ¡ ¥ � C � @X¶ � ¤¦¤ � ² �§¢O¨�÷8:"%;<�=�-;<$lC��Om,n w0aÀ\ib \,alpoHËj�kz_ \?I,\,_�F e0j�ffh+w-a\ib \,alp9f0kOIl_1alk�m,`A_1k�w0jpM�÷qFrW ß L2X,N,â K?e�gO\,a \\tsMkOI^_LIÀe0j\,j�]^w#f0kzj�duh^`Aj�]+_úk�w-jwvyx�z5÷{F|W~} L2X,N#��� e0j�fÀe�fq\^]^w#f0kzj�duh^`Aj�],_úk�w-j��/��z�÷y} L2X,N#��� W�F�Il`=]^gi_ÊgOe0_yh+w0a¬\ib \,alp��� FQK��/��zM«�vyx�z0« � ¯½¯ �4� Koe-j�f

­ »<B \S�J� ßO� vyx�z0« � ¯ � âU�9ß 7&«LM�¯ X 7&«EM�¯ �ÞN,â�XY gO\,a \ � �V� fq\,j�w0_ \�I�_zg=\:y§\,j�dq_Êgw*hxe�Il_1alkzjVd � R��Ëw-j2b-\,agI+\,y p�K�j�w�\,ala w0a���h^a \^\x\,j�]^w3f-kzj�dÀ]^e-j9fqwÀmD\,_ú_ \,aiR? � ¡ ¢O¢O�M¢�³ � ¡ � C � ¡0¤ÄC � @ � GD@,E ���x� ¶zC @ ¢s� CD¡-CD@ £s£A�Íí @,GD@ ¢ CD¤§¥MJËF � C ² @ ² � ¤§¤ � CD¡0C @)C � @)C � @ � GD@,E �¦¢ C � @À¡qF � ¾M@� �§¢=� @ � C ���Ä� ¤§@3¡0GD@,G °6± @ £A�M¢�³ C�BOG � ¾q@oC � @�C � @ � GD@,E � @#G @MJMF � C·C � @�Eu¡ �¦¢u�¦£ @#¡�¶ � GËC � @�@,» ��� C @ ¢�� @�GD@ � � ¤§C �¦� C � @¶ � ¤¦¤ � ² �§¢O¨�÷�« N ¯��d�q�O¢�£ ¡0¤¦¤�B=G � F=¡0F � ¤ � C � @ �Ä£A� ² ¢R� � C � ¡-C�C � @,¥¿F�@ �+� E¬@�B � ² @,G �Ë� ¶7K «��1° @ ° J �+�q¢�� CDG �=� C M=��� �=�^�C � ¡-Cd¶ � Gd@#¾q@#G ¥=�7J M=� « � ¯ �þKV�y�%¶ � G �½� E¿@ �¦¢ C @ ¨ @,G��^J=¡ ¢=£�M« � ¯�� Ko� M=�ú« � ¯��4M« � ¯l°�« K ¯ ? �=� ² C � ¡-CdC � @,GD@@+» ��� C � ¡ ¢ @ ¢=�,�<£O�§¢O¨ vyx�z C � ¡-CI@ ¢=�,�<£ @ � ¡ ¢ @,¤¦@,E¿@ ¢ C��7J ² �=�M� @ ¢ @ ² BOG � F�¡0F � ¤ � Cª¥ M=�1« � ¯ @# � ¡0¤ � K{�y�½J ² � C � �F � C �x«�� � C � ¡0C ¢O�R� C G �§¢O¨¼�o� ¡ ¾q@IC � @ � ¡0E¿@�@ ¢=�,�A£A�§¢=¨¼¯l°I« æ ¯�®Ä�q¢=� ¤ ��£ @XC � ¡0C�C �=�¦� @ ¢=�,�<£O�§¢O¨u� ¡ � ¡ ¢ @,»AB�@ � C @ £¤¦@ ¢O¨ C ���§¢ C � @ £ @ � � G @ £ G^¡ ¢O¨ @ -��o� @ �+�M¢ ¾q@,G � @ ���d� ¡0G £ @#GÄC � BOG � ¾q@�µ ² @ ² �q¢�³ C ¨ @+C �¦¢ C �¿� C °

��*Þ;<�1;¼�y¡O*�!o¡O�1��;�¢%��¡=��'#¡=�Ä�1.7;<*�!#��!^>�o� @d@ ¢ CDG � B<¥X¶ �O¢=� C �§�M¢ @+» �O� F � C �Ë� � E¿@o¾q@#G ¥ ¢O��� @dEu¡0C � @#E¿¡0C ��� ¡q¤OBOG � B�@,G C � @ �#°7¸O� G�@+»O¡0E¿BO¤¦@ � ¶�¡ £A��� CDG � F � C �§�M¢M £ @ �+� E¿B �¼� @ ���¦¢ C � C ² ���¦¢=£ @#B�@ ¢=£ @ ¢ C £A��� C G � F � C �¦�q¢=�£M ( ¡ ¢=£�M > «��1° @ ° J F � F (u¤ F > J M ( ÷�F ( W ß L2X,N,â¡ ¢�£¥M > ÷%F > W ß L%X#N+â%¡ ¢=£¥M« �ZX�¦ ¯ � M ( « � ¯*M > « ¦ ¯½¯ J=C � @ ¢67 «EM�¯ � 7&«EM ( ¯ � 7&«EM > ¯l°��o�O��� ¶�¡ � C � ¡ ¢ F�@�=� @IC � BOG � ¾q@X¡ ¢À�§¢ CD@,GD@ � C �¦¢O¨ ¡0¤ ¨ @,F=GD¡ �¦���¦£ @ ¢ C � Cª¥qJ ² �=�¦�^�À�¦��� C � @,G ² �¦� @I �O� C @XCDG ���^º ¥uC � BOG � ¾q@ °¸ G � E C � @o¡0F � ¾q@·B=G � B�@#G½Cª¥:¡ ¢=£ C � @Ä@ ¢ C G � B<¥ � ¶�¡�F � C#J ² @·´ ¢=£ C � ¡-C�C � @Ä@ ¢ C G � B<¥ �§¢f§R�¦¢=£ @,B�@ ¢�£ @ ¢ C¨5Oµ F � ¡ � @ £�+�M�§¢63=� B �X�¦�£§ 7&« 5 ¯+°¿Ã�¢ C � @ � C � @,G � ¡ ¢=£ J�C �=�¦��� �O�q� ¤ £ F�@¬@# � ¡q¤%C � C � @¿@ ¢ CDG � B<¥ � ¶ËC � @ £O�¦� C G � F � C �¦�q¢�M¨q� ¾q@ ¢ F<¥ M�« � ¯d÷ �p5y©G(�ªT«Z¬ ­ \ « N�!�5 ¯ ©U)tªO« ¬ ­ \ °Ëä��½�¦¢O¨ C � @ � @ �+�q¢�£ ¶ � G E � ¤¦¡=J ² @ � ¡0¤ �+� ¤�¡-CD@�C �O��� ¡ �#÷®j ¯±° )

² § ³�´ M ¯ ¤ �q¨�> NM ¯² � @#G @ M ¯ ÷ �µ5 ¯ « N�!�5 ¯ ® � ¯ °Ë�o�<�=� ² @ ¨ @+C®j ¯±° )

² § ³ ´ M ¯ ¤ �M¨ > NM ¯ � § 7&« 5 ¯ &­Ë¢ CDG � B¼¥u¡ ¢=£R� C � ¾-¡0G � ¡ ¢ C � BO¤�¡ ¥R¡ ¢�� E¿B � G½C^¡ ¢ CdG � ¤§@ �§¢��+� E5F �¦¢ ¡0C � G ���,� ¡ ¢=£ BOG � F=¡0F � ¤ � Cª¥ ° ? � E¿@I¾q@,GD¥ �=� @+¶ � ¤¢O� C �¦�q¢=� C ��º @,@#B�C G^¡ �^ºX� ¶ �§¢ C �O��� ¡qG @3¡�¡0GD@ËC �O�M� @ � ¶OE � C � ¡0¤ �¦¢ ¶ � GDEu¡-C �§�M¢ J �+�q¢�£A� C �§�M¢ ¡0¤¼@ ¢ CDG � B¼¥MJ-¡ ¢=£ GD@,¤�¡-C � ¾M@@ ¢ CDG � B¼¥ -�7� C � G ¢ F=¡ �^º C �x�M� Go@+»O¡0E¿BO¤¦@qJ ² � ¡0C ��� C � @ � BAC � Eu¡0¤ �+� E¬B=G @ � � �§�M¢ ¶�¡ � C � G·¶ � GÄC � @ � ¡ � @ � ¶ �M� G�E¬@ � � ¡ ¨ @�C �F�@x¶�¡0»A@ £ J ² �O�¼� @¬F � C � ² @,GD@)N ² � C � B=G � F=¡0F � ¤ � Cª¥9N��¬ã �o� @u¡ ¢=� ² @#G ���u7&« & LON ¯�¶ ì��¸· E¿@ �D� ¡ ¨ @ � ¡ ¢ F�@�+� E¿BOG @ � � @ £ C � ² � C �=�§¢�7&« & L=N ¯�� ¶7C � @ � G � G �¦¨q�¦¢ ¡0¤U¤¦@ ¢O¨ C � J � ¶ ² @ º¼¢=� ² �q¢ @ �d�A�,�,� G ² � C � BOG � F=¡qF � ¤ � Cª¥�¡0F �q� CN�� °¹*º¼»J½¿¾�À9ÁLÂ�Ã�¾�Ä#Ũ¾�Â�Æ�¾*Ç$È�Ã<Èg»�ÇSÉ�Ê4Ë�ÈgÃ�Ì�ÈgÍS½¿¾qÎ,ÇSÃ<È�ÅZ»JÈgÀ*À*É�Ã�ÇSÌ¿»�Ï�ÁLÉ�ÐÑÈg»�ÇJÇ�¾9Ò�»�¾*ÇJÁ�ÓSÌ¿ÆUÁ�É�Í�¾�ÁLÓ�¾�¾*»iÁLÃ�É�Ô�ÕJÉgÖ�Î�Ä#Ã<ÈtÁLÓ�¾*ÃÁLÓ�Èg»×Ð�Ø$º¼»�Á�ÓS¾�ÆL¾�»SÉgÁ�¾*ÆÙŨ¾�ÅZÌ¿½¿½�ÆEÅ�Ì ÁLÀ<ÓfÁLÉJÁ�ÓS¾�Ê�É�ÃL¾ÈgÔ�Ô�Ã�É�ÔSÃ�Ì�ÈtÁL¾�»�ÉgÁ�ÈtÁLÌ¿É�»�ÄyÅZÓ�Ì¿À<ÓfÇ�¾9Ò�»�¾*Æ�Ì Á�Á�É$Í�¾�È£Ö�Â�»SÀ*ÁLÌ¿É�»oÉgÖZÁ�Ó�¾Ç�Ì¿ÆEÁ�ÃLÌ¿Í�ÂSÁLÌ¿É�»uÈg»�Ç�»�ÉgÁ Á�Ó�¾�ËgÈgÃ�Ì�ÈgÍ�½¿¾�Ø

N+µ á

Page 5: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

Ï�Ð1ÿdÐLÚ ����� Û#ÛZÚ2Ü�Ó�Ô�Ô�ØZ� Û¸O� G¬C � @�B � GDB �M� @ �¬� ¶�C �O���u�+�M� G � @qJËC � @iE � GD@ �§¢ C @#G @ � C �§¢=¨È¢O� C �¦�q¢s� ¶I¡ �^� ¡ ¢O¢ @#¤ ��� C � @ � ¤¦¡ � �¬� ¶ Æ ¢=�q��� ¥ Ç�^� ¡ ¢O¢ @,¤ �I�+�q¢��½��£ @,GD@ £ F¼¥�? � ¡ ¢O¢=�q¢ · �ú° @ ° J �^� ¡ ¢O¢ @#¤ � C � ¡-C 3=� B � � E¿@ � ¶ËC � @xF � C �X� @ ¢ C�¡ � G �M�D� C � @,E °5�o� @BOG � FO¤¦@,E � @#G @ �¦� ¶ � G ç ¤ ��� @xC � @ ¢=�,�A£ @:C � @¿E¬@ � � ¡ ¨ @ � � @ ² ���½� @ � C �À� @ ¢=£�¦¢È� �=�^� ¡ ² ¡ ¥)C � ¡-CX@,¾q@ ¢� ¶·C � @�^� ¡ ¢O¢ @,¤ �,� GDG � BOC ���½� E¬@ � ¶�C � @XF � C �o�¦¢ C � @I@ ¢=�+�A£A�¦¢O¨ J<è � F ² � ¤§¤�F�@X¡qFO¤¦@�C �u£ @ �+�A£ @�C � @IGD@ � � ¤ÍC �¦¢ C �¬ç ¤ ��� @ ³ �� G �¦¨q�¦¢ ¡0¤ËE¿@ � � ¡ ¨ @qJ ² � C �&�O�¦¨q� BOG � F=¡qF � ¤ � Cª¥ ° ? � ¡ ¢O¢O�M¢&�+�q¢��½��£ @,GD@ £ ¡¤¦¡qG ¨ @ � ¤�¡ �D��� ¶�BOG � F�¡0F � ¤ ��� C ��� E �A£ @#¤ �¶ � G ¢=�q��� ¥ �^� ¡ ¢O¢ @#¤ � J6¡ ¢=£ ¶ � G�@#¡ �^� B=G � ¾M@ £ C � @ � � G B=G ���½�¦¢O¨ C � @ � GD@,E×C � ¡-C:¥ �q�9�+�M� ¤ £ ¡0¤ ² ¡ ¥ �I� ¾M@,G �+� E¿@¬¡�+�M¢=� CD¡ ¢ Cd@,GDG � G�GD¡0C @XF<¥ � @ ¢=£A�¦¢O¨ ¡ ¢ @ ¢��+�A£ @ £ E¿@ �D� ¡ ¨ @�C � ¡-C ² ¡ � ¤ �M¢O¨ @#GdF<¥�¡ �+�q¢�� C^¡ ¢ Co¶�¡ � C � G °�o� @ ¨ @ ¢ @,G^¡0¤%E �A£ @,¤·? � ¡ ¢O¢O�M¢�¨ ¡ ¾q@:¶ � G �^� ¡ ¢O¢ @,¤ ����� ¡ � ¶ � ¤¦¤ � ² �,°5�o� @,GD@ ��� ¡ ¢��¦¢ B � C5¡0¤¦B � ¡0F�@+C�Ý�¡ ¢=£ ¡ ¢�q� C B � C�¡0¤¦B � ¡0F�@+CÙÞ « F � C �u�=�½� ¡0¤¦¤§¥x´ ¢O� C @ ¯l°��o� @ ¢ ² @ � ¡ ¾M@�¡XF � B�¡0G C � C @ ¨ GD¡qB � ² � C � Ý �M¢ C � @�¤§@,¶zCÄ¡ ¢=£ Þ �M¢C � @5G �§¨M� CSß�@3¡ �^� @ £O¨ @ «Là X*á ¯���� ¤�¡0F�@,¤¦@ £ ² � C � ¡uBOG � F=¡qF � ¤ � Cª¥ � ¶�C � @ �^� ¡ ¢O¢ @#¤ �+�M¢ ¾q@,G C �¦¢O¨ ¡ à C � ¡oá °:«��o� @�^� ¡ ¢O¢ @,¤ � B�@,G^¡-CD@ ���¦¢=£ @#B�@ ¢=£ @ ¢ CD¤§¥ �M¢ @#¡ �^�R�^� ¡0G^¡ � C @#G °ë¯5à ¶ �+�M� G � @MJq¶ � G·@#¡ �^�=ài�q¢ C � @�¤§@,¶zC#J¼C � @ � � E � ¶UC � @¤�¡0F�@,¤ �o�q¢ C � @�@ £A¨ @ � C �M�=�^�O�¦¢O¨¿� C�E �=� CdF�@uN °± @ ² � ¤¦¤ � ¤§¤ �=� C G^¡-C @ �=�¦� GD@ � � ¤§C � ¶ � G �½�=�^���^� ¡ ¢O¢ @,¤ �o�q¢ ¤§¥ �§¢i� ¡ � @ � ² � @,GD@�Ý]â4Þ °�«�êø¢i�½�=�^�i� ¡ � @ � J � C ����� ¤¦@#¡qG² � ¡0C�¡ ¢ @,GDG � G ���,°ë¯� ² �¿�,� E¿E �q¢ ¤¦¥ �,�q¢=� �¦£ @,GD@ £��^� ¡ ¢O¢ @#¤ �#÷

N ° è �¦¢ ¡qG ¥�?<¥<E¬E¿@,C G �¦�¿®Ä� ¡ ¢O¢ @,¤Z· C � @ �^� ¡ ¢O¢ @#¤ �+�M¢=� �¦£ @#G @ £��§¢ C � @xC � @ � GD@,E ° Ý��,Þp� } L2X,N��¼J « L%X L ¯¡ ¢=£Ì« N@X,N ¯Ä¨ @+C�BOG � F=¡qF � ¤ � Cª¥iN�!?57J=¡ ¢�£È« L%X,N ¯ ¡ ¢=£9« N@X L ¯·¨ @+CdBOG � F=¡qF � ¤ � Cª¥$5 °

K ° è �¦¢ ¡qG ¥ ­ G^¡ � � GD@ ®Ä� ¡ ¢O¢ @#¤U· �¦¢ C �O���:�^� ¡ ¢O¢ @,¤úJUF � C ��£A�M¢�³ C ¨ @+C 3=� BOB�@ £ · GD¡0C � @#G�C � @,¥ ¨ @+CX@,G^¡ � @ £�°?<B�@ � ´ � ¡0¤¦¤§¥MJ{Ýã� } L%X#N��MJ@Þ6� } L%X,N@XDã#�MJ « L%XDL ¯ ¡ ¢=£i« N@X,N ¯�¨ @,C·BOG � F=¡qF � ¤ � Cª¥�N/!�57JM¡ ¢�£i« L%X^ã ¯ ¡ ¢�£i« N#X^ã ¯¨ @+CdBOG � F�¡0F � ¤ � Cª¥J5 °

ä ���Eå#> 'q��.%��*%�Ì!#"%;<�=�-;<$�o� @ ¢=�q��� ¥ �+�A£A�¦¢O¨ C � @ � GD@,E � ¶·? � ¡ ¢O¢O�q¢i��� ¡uB � ² @,G ¶ � ¤6¡ ¢�£)¨ @ ¢ @#GD¡q¤ �q¢ @ °�±Þ� @ ¢� B�@ �+� ¡0¤ �T� @ £ C � C � @ � ¡ � @� ¶�¡¬F �¦¢ ¡0GD¥ � ¥¼E¿E¿@+CDG ���X�^� ¡ ¢=¢ @,¤ ² � C � @,GDG � GoBOG � F=¡qF � ¤ � Cª¥J56J ² @ ¨ @+CoC � @X¶ � ¤¦¤ � ² �¦¢O¨ GD@ � � ¤ÍC °

8:"%;<�=�-;<$lC���æçn w0aÈ\ib \,alp 5¸� N � K K¿_zg=\+aD\Ì\tsMkOIl_EIÈeý]^w-j%Il_øe-j�_£è � é e-j�f2e¥NOe0kzaÌw�h�h^`Aj�],_úk�w-j%I×ê ÷} L2X,N#��ë Wì} L2X,N#��í9ë K�e0j�f?M ÷�} L%X#N���í9ë Wî} L%X#N���ë Y kz_Êg _zg=\�h+w0yzy§w Y kzjVd?N�aDwtN=\+al_úpqb×ïEh Y \$N�k�]gð9e�au\�ItI,e�dM\`Aj=k h+w0a�axyÍpue0_Ëa e0j�fqw�añh^a w�a¸} L2X,N#��ë KË\,j�]^w3fq\ Y kz_zgfê×e-j�f¬_zg=\+jPI,\,j�f¬_ÊgO\XaD\�Il`Ay _·eM]+a w�IgII_ÊgO\Xj�w-kOIlpR]Dg=e-j�j�\,y¿Ke-j�f�fM\D]^w3fq\x_ÊgO\5a \�Il`Ay _LK�_zg=\+j Y \:aD\D]^w�b \,a�_zg=\xw0alkòd0kzj�e-yUa¿\�IgI,eid¼\ Y kz_ÊgfN�a wqm^eMm+kzy kz_úp N�!�ó « N ¯iR >�o� @ � GD@,E�N ° æ ¡0B=BO¤ � @ � · ² � C �£O�Íí @,GD@ ¢ C �+�M¢=� C^¡ ¢ C � · C � C � @�F �§¢ ¡qG ¥�@,G^¡ � � G @ �^� ¡ ¢O¢ @,¤�¡ � ² @#¤§¤ °

ô ¡O$&$ ��*%�*7��!�¡O!#����*Uå± @ ¢ @,@ £ © ��� C�¡x¶Ê@ ² £ @,´ ¢O� C �¦�q¢=� F�@+¶ � G @XBOG �A� @#@ £A�¦¢O¨ ² � C � C � @�BOG �<� ¶ � ¶6C � @XC � @ � GD@,E °

A ;@B�*%�Ê!#�1��*DC��Tõ ï±h � e0j�f ¦ e-a \:kzj Ý ® K�_zg=\+j�_zg=\dÝ ¡qE¬E �¦¢O¨u£A��� C^¡ ¢=� @�F�@+C ² @,@ ¢ C � @,E ����ö)« �ZX�¦ ¯d÷ �|÷ � ¶�+�<� G £A�¦¢ ¡0C @ ���M¢ ² �O���^� �¡ ¢=£ ¦ £O�Íí @,G °øtù ÓS¾Gú�ûLü�ý�ÁL¾�ÃLÊãÇ�¾*Ô�¾*»�Ç�ÆZÉ�»�½ Õ�É�»uþ@Ø

N+µªH

Page 6: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

A ;@B�*%�Ê!#�1��*DC��Oÿ e�gO\IÝ ¡qE¬E �¦¢O¨ F=¡q¤§¤ � ¶%G^¡ £A�¦�=���¿� @ ¢ CD@,GD@ £ ¡-C�¦ ������« ¦yX �0¯o÷ � } �¥��Ý ® ÷@öÀ« ��X�¦ ¯���� � °A ;@B�*%�Ê!#�1��*DC��¦ �� � ¤ «�� X §6¯�fM\+j�w-_ø\�IÄ_zg=\Ùb w0y `{a¿\dw�h�ªe0j=p��a eMf-kz`VI����xm^e-yzy<kzjf} L2X,N#� ®� kERz\�RTK � ��« ¦yX �0¯ � R���s<eq],_úy p�K_Êg<kOI��+`=e0j=_úkz_1pIkOI [��� ° )�� ® ��� RGï±h Y \ HUsuI,w�au\ 5��2L e-j�fXy§\,_%§�W é _ÊgO\,j Y \�d¼\+_ � � ¤ « 5 § X §6¯ � K������� ��!#"$�O(%�&� ® R' �-���)(��*(d85"7;<��� ;<$ C��Oæ' �-���)( �o� @XBOG �<� ¶ ���d�O�¦¨q� ¤¦¥ ¢O�M¢ µ �,�q¢=� C G �=� C � ¾q@#ß � C �=� @ � C � @�BOG � F=¡0F � ¤ �¦� C ��� E¿@+C �=�<£�°å @,C § �,+ÀF�@ £ @ �+��£ @ £�� B �M¢ ¤¦¡0C @,G °Äö·�¦�^º C � @5@ ¢=�,�<£O�§¢O¨ ¶ �=¢=� C �§�M¢�êÎ÷2} L%X#N���ë W~} L%X#N�� ® ¡-C�G^¡ ¢�£A� E�J �ú° @ ° J¶ � Go@#¾q@,GD¥.- � } L2X,N���ëMJ êR« - ¯Ä�¦�d�^�O�¼� @ ¢��O¢=� ¶ � G E¿¤¦¥R¡-CdGD¡ ¢=£A� E ¶ÊG � E } L%X#N�� ® J �¦¢=£ @#B�@ ¢=£ @ ¢ CD¤§¥ � ¶7¡q¤§¤ � C � @#G�^�O�M�¦� @ �#°�o� @ £ @ �,�A£A�§¢=¨ ¶ �O¢=� C �¦�q¢wM ÷Z} L2X,N�� ® W } L%X,N#��ë ² � G ºA� ¡ � ¶ � ¤¦¤ � ² �,°0/I� ¾M@ ¢ ¡ � CDG �¦¢O¨ ¦6� } L2X,N�� ® J ² @5´ ¢=£«Ê¢=�q¢ µ �+�M¢=� CDG ��� C � ¾q@#¤§¥ ¯ C � @1- � } L%X#N���ë � �=�^� C � ¡-C öÀ« ¦yX êR« - ¯½¯:�¦� E �§¢O� E �T� @ £U°È�o�O�¦� - ��� C � @�¾-¡q¤ � @ � ¶M« ¦ ¯+°± @ ¢O� ² BOG � ¾M@¬C � ¡0C M ¡ ¢=£µêZ� ¡ ¾M@¿C � @RGD@# �O� GD@ £ BOG � B�@#G½Cª¥MJ ² � C �û�=�§¨M� B=G � F=¡0F � ¤ � Cª¥MJ � ¾q@#GXC � @�GD¡ ¢=£A� E�^�O�M�¦� @ � ¶ êu°¸%� »2- � } L%X,N#��ëI¡ � ¡0¤ � ��êR« - ¯l°�«1�o� @IG @ � C � ¶UC � @�BOG �<� ¶ ² � ¤§¤ �=� @�C � @�¶�¡ � CÄC � ¡0C ê�« - �¦¯ ¶ � G�- �43�5- �¦�o� C � ¤§¤G^¡ ¢=£A� E ° ¯ C � @xE¿@ �D� ¡ ¨ @xF�@ �§¢=¨À� @ ¢ C °$. @ ¢=� C @¬F<¥¥¦�C � @ �+� G G � BACD@ £ ¾M@,G �½�¦�q¢�� ¶ êR« - ¯ C � ¡-C �¦� GD@ � @ � ¾M@ £ F<¥è � F °�å @+C�6 £ @ ¢O� CD@�C � @X@,GDG � GľM@ � C � GÙ¦J! êR« - ¯+°ËÅ�� CD@IC � ¡0C�C � @76 ��� ¡xG^¡ ¢=£A� Eξ-¡0G � ¡qFO¤§@ ² � C � @#¡ �^��� ¶ � C ��+�<� G £A�¦¢ ¡0C @ � F�@ �¦¢O¨ N ² ° B ° 5¡ ¢=£ L ² ° B ° N�!�56J �§¢=£ @,B�@ ¢=£ @ ¢ C � ¶ � C � @,G �+�<� G £A�¦¢ ¡0C @ �#°¸%� »98:��L °Xå @+C � � « 5o�;8 ¯*§�°Xêø¢�� G £ @#G�¶ � G M« ¦ ¯<3�=- ¡-CX¤§@3¡ � C �q¢ @ � ¶·C � @x¶ � ¤¦¤ � ² �¦¢O¨ C ² � @#¾q@ ¢ C � E �=� C�A�,�,� G ÷

N ° ¦ 3� ��«Eê�« - ¯ X �0¯�«��1° @ ° JAC �¼� Eu¡ ¢ ¥�@,GDG � G �Ä�A�,�+� G GD@ £)�§¢ C G^¡ ¢�� E ��� � �§�M¢�°ë¯K °��o� @,GD@X@+» �¦� C ���½� E¬@7- �43��- � �=�^� C � ¡0C êR« - ��¯ � ��« ¦y& �0¯l°I«��o� @:@#G G � G � CD¡ º @IC � @�GD@ � @ � ¾q@ £ ² � G £ C �<�

� ¤ �M� @�C � C � @�@ ¢=�+�A£A�¦¢O¨¿� ¶ �½� E¿@ � C � @#GdE¿@ �D� ¡ ¨ @ °ë¯

êø¢ B�¡0G C ���+� ¤�¡0G3J � ¶ ¢ @ � C � @#G¿@,¾q@ ¢ C �A�,�,� G � J�C � @ ¢ - �¦� C � @ �O¢=�  � @ÀE¿@ �D� ¡ ¨ @ � �=�^� C � ¡-C êR« - ¯x��� ² � C �=�§¢ ¡£A��� C^¡ ¢=� @ � ¶ � ¶ÊG � E ¦)¡ ¢=£À�½�oM« ¦ ¯ �>- °± @ � �O� ² C � ¡0CĶ � G�¡ ¢ ¡0B=BOG � BOG � ¡0C @ �^�O�M�¦� @ � ¶ § J¼C � @�@#¾q@ ¢ C � ¡qF � ¾M@ � ¡0B=B�@ ¢ ² � C � ¤ � ² BOG � F=¡qF � ¤ � Cª¥ °�¸O� GÄC � @´=G � C�@#¾q@ ¢ CdC �u� ¡0B=B�@ ¢ J � C�E �=� C�F�@�C � ¡0C�6 � ¡ � E � GD@IC � ¡ ¢ 5f�?8�¶ÊGD¡ � C �§�M¢À� ¶�N �,°·± @ � ¡ ¢ ¡0B=BO¤§¥ ®Ä� @,G ¢O�0íF �q�O¢=£=�:«�� @,@�¡0B=B�@ ¢=£A� »À¡-CoC � @�@ ¢=£À� ¶7C �O�¦� ¤§@ � C � G @ ¯ C �R� @#@IC � ¡0C ÷

ö G@ ß ¦ 3� ��«LêR« - ¯ X �-¯ ¯ â � K �#�BADCFE > � ® &¸O� G�¡ ¢ ¥18�sLOJ ² @ � ¡ ¢ B �¦�^º=§ C � F�@�¤¦¡qG ¨ @�@ ¢O�q�=¨q� C � ¡0CdC � @:¡qF � ¾M@I � ¡ ¢ C � Cª¥ �¦� ¡ �d� Eu¡q¤§¤�¡ � ² @ ² ¡ ¢ C °± @ ¢O� ² E � ¾M@ �q¢ C � C � @ � @ �+�M¢=£ @,¾M@ ¢ C ° ¸%� G � Cu´=»ã¦ý¡ ¢=£ ¡ ¢ - �G3�H- ¡ ¢=£2�+�M¢=�½��£ @#GuC � @�@,¾q@ ¢ CuC � ¡0CêR« - �z¯I3� ��« ¦�X �-¯+°u�o� @¿BOG � F=¡0F � ¤ � Cª¥ � ¶·C �O�¦� @,¾q@ ¢ C#JUC^¡ º @ ¢�� ¾M@,G�C � @uG^¡ ¢=£O� E×¾-¡0G � ¡qFO¤¦@ êR« - ��¯ J �¦� @,»O¡ � CD¤§¥� � ¤ «&�)« ¦�X �0¯ ¯�� K ® °�ä�� �§¢O¨ C � @d¡0BOBOG � » � Eu¡0C �¦�q¢ � � ¤ «D��« ¦�XL5 §6¯G¶ KJ���� � ® ¡ ¢=£x�§¨M¢O� G �§¢=¨ 8 « ² �O�¦�^�¬��� ¡0GDF � CDGD¡qG � ¤¦¥� E¿¡q¤§¤ ¯ J ² @I´ ¢=£ C � ¡-Cd¶ � Gd@,¾q@#G ¥.- � 3�,- °

ö GK ß êR« - � ¯ � ��« ¦�X �-¯ â ¶ K ���� � ® � ® &N+µML

Page 7: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ä�� �¦¢O¨ C � @ �O¢=�§�M¢ F �q�=¢=£ J ² @ ¨ @+CdC � ¡-Cö GK ß NO- � 3�5- �,° C ° êR« - � ¯ � �)« ¦�X �0¯ â ¶ K ëS� ® !P���Q�$� ® &

�o�<�=� ² @�´ ¢=£ C � ¡-C � ¶ è � ((��)���� � J<C � @ ¢ + ��§ �þNq! 7&« 5 ¯ ¡ ¢=£ C �<�=� C � @� � ¡ ¢ C � Cª¥R¡qF � ¾M@ ��� ¤§@ � � C � ¡ ¢��M¢ @ °�o�O���d¨q� ¾q@ � C � @ �^�O�M�¦� @ � ¶ è C � ¡-C ² @ ¢ @,@ £U°Ã�� G�BOG �<� ¶ ����¢O� CI¥q@+C �+� E¬B=¤§@,C @ -�±Þ� ¥Oã ± @#¤§¤úJ ² @ � ¡ ¾q@5¡qG ¨M� @ £ C � ¡-CX¡¿´O»A@ £ - ��� ¤ �¦º @,¤¦¥)C � F�@ £ @ �+�A£ @ £�+� G GD@ � C ¤¦¥qJ<F � C ² � ¡0C�¡0F �q� C � C � @,GoE¿@ �D� ¡ ¨ @ � ã �7�u�+� E¿BO¤¦@+CD@IC � @�¡0G ¨q� E¬@ ¢ C#J ² @ ² � ¤§¤�¡ � C � ¡0¤¦¤§¥ ¢ @,@ £ C � ¤ �M� @¡¬¤ � C½CD¤§@5F � C °å @,CSRu�þKV�T�BADCUE > � ® ��K@ëS� ® !P���Q�$� ® J £ @ ¢O� CD@oC � @oC � C^¡0¤OBOG � F�¡0F � ¤ � Cª¥ � ¶�@#G G � G �¦¢ @ � C � @#G � ¶�C � @�C ² ��� C @,B � ¡0F � ¾q@ °± @ � ¡ ¾q@ � �O� ² ¢ C � ¡-C�¶ � G�¡ ¢ ¥u´=»<@ £ -ÈJA¶ � G�¡¬GD¡ ¢=£A� E �^�O�q��� @ � ¶ ê ¡ ¢�£ C � @5¡ � � �A�+� ¡-C @ £×M JOC � @:@,»AB�@ � C @ ££ @ �+�A£A�¦¢O¨ @,GDG � GoBOG � F=¡0F � ¤ � Cª¥ �¦� ¡0C�E �M� CR °Ä�o�<�=� ² @ � ¡ ¢)¢O� ² �+�M¢=� ¤ �=£ @XC � ¡-CdC �O��� @+»AB�@ � CD¡-C �§�M¢i�+�q¢ C �§¢<� @ �C �¿�O� ¤ £À� ¶ ² @XEu¡ º @7- ¡¬G^¡ ¢=£O� Eξ-¡0G � ¡qFO¤¦@ �^�=�M� @ ¢À�O¢O� ¶ � GDE¬¤¦¥u¶ÊG � E } L%X#N�� ë °�± @ ¨ @,C

­ »ABWV�X K X @ ß M«LêR« - ¯ �?6 ¯73�>-)â � R�&êø¢ B=¡0G C ���+� ¤¦¡qGÄC �O���d� E¿BO¤ � @ � C � ¡-CdC � @,GD@X@+» �¦� C � ¡ ¢¥ê � �=�^� C � ¡0Co¶ � GdC � @ �+� G GD@ � B �M¢=£A�¦¢O¨QM J ² @ � ¡ ¾M@

­ »AB V�X @ ß M«Eê�« - ¯ �Y6 ¯Z3�5-�â � R�&�o�O�����+�M¢=� ¤ �=£ @ � C � @�B=G �<� ¶ � ¶�? � ¡ ¢=¢O�q¢�³ � C � @ � GD@,E °

4Q¡{1/¡O'q��!D>2�)(d!#"%;' "�¡=*7*%;<�? � ¡ ¢O¢O�M¢�³ � C � @ � GD@,E�¡0F � ¾q@ � �O� ² � C � ¡-C � ¶ ² @5¡qG @ ² � ¤¦¤ �¦¢O¨ C ��� ¤ � ² £A� ² ¢ C � @5@ í @ � C � ¾q@:C G^¡ ¢=� E �¦�D�½�¦�q¢ G^¡-CD@� ¶·C � @ �^� ¡ ¢O¢ @,¤%C � N ��è � N�! 7 « 5 ¯ J�C � @ ¢ ² @ � ¡ ¢ ¡ �^� @ � ¾M@5@#G G � G µ1¶ÊGD@,@ �+� E¿E �O¢O��� ¡-C �§�M¢ ² � C � ¾-¡ ¢O���½�=�§¢O¨ ¤§¥� E¿¡q¤§¤�BOG � F�¡0F � ¤ � Cª¥ °�¸O� G½C � @,GDE � GD@�C �=�¦�  � ¡ ¢ C � Cª¥iNq! 7&« 5 ¯Ë�����q¢ ¤¦¥R¡�¶ �O¢�� C �¦�q¢À� ¶6C � @ Æ ¢O�M�¦� ¥ �^� ¡ ¢=¢ @,¤ Ç ¡ ¢=£¢O� C � ¶6C � @ ¢<� E5F�@,G � ¶7F � C � ² @ ² ���½� C � C G^¡ ¢=� E � C � ¾q@#G � C °�êl° @ ° JAC � @�@ í @ � C � ¾q@�G^¡-CD@ � ¶6CDGD¡ ¢=� E ��� � �¦�q¢)� ¡ ¢ F�@¡ ¢ ¡0F � � ¤ � CD@ �,�q¢=� CD¡ ¢ C �§¢�£ @,B�@ ¢=£ @ ¢ C � ¶ §�° ? � ¡ ¢=¢O�q¢Ì� ¡0¤¦¤¦@ £ C �O���  � ¡ ¢ C � Cª¥ « C � @¬¤ � E � C �¦¢O¨ G^¡-C @ � ¶[+ ��§ J�¡ �§�W é ¯ C � @ ]^etN=eq],kz_1pX� ¶7C � @ ¢O�q��� ¥ �^� ¡ ¢=¢ @,¤ °¸O� G·C � @�è �§¢ ¡qG ¥R?<¥<E¿E¿@+CDG ���X®Ä� ¡ ¢O¢ @#¤1J �O� ² ¤¦¡qG ¨ @ � ¡ ¢�� C �o� ¡qB=¡ �,� Cª¥¿F�@3ã �o� @IBOG �<� ¶7¡qF � ¾M@ �½�=� ² � C � ¡-CoC � @� ¡qB=¡ �,� Cª¥MJ £ @ ¢O� C @ £]\�^�_a`·« 5 ¯ J ��� ¡-Co¤¦@#¡ � C�N�! 7&« 5 ¯l°�ê C ���o¢ ¡-C � G^¡0¤�C � ¡ � ºu� ¶6C �=�¦�  � ¡ ¢ C � Cª¥ �¦� ¡ ¢ ¡qG½C � ¶�¡ � C � ¶C � @�BOG �<� ¶ªJ � G �¦�Ä� CÄC � @ �,� GDG @ � C � ¡0B=¡ �+� Cª¥5¶ � G·C � @ �^� ¡ ¢O¢ @,¤ ° ? � ¡ ¢O¢O�M¢ BOG � ¾q@ £ C � ¡0CÄC � @�¤�¡-C C @#G ² ¡ � C � @ � ¡ � @ °± @ ² � ¤¦¤�BOG � ¾q@�C �O���d�¦¢ C � @ ¢ @,»¼C�¤¦@ � C � GD@qJ=F � Cd´=G � Cd¤¦@+C �=��� @#@ ² � ¥uC �O���d�¦� C � @ � ¡ � @ �¦¢ C �O� C � ¾q@#¤§¥ °? � B=B �¼� @uC � ¡-C ² @)¡0GD@R¡ � C � ¡0¤¦¤¦¥ ��� ¡ � @+C � B9C � @,GD@ �¦� ¡ ¢O�M�¦� @,¤¦@ �D�:�^� ¡ ¢O¢ @,¤ÄF�@,C ² @#@ ¢&ç ¤ ��� @ ³ � ¤ �A� ¡-C �¦�q¢ ¡ ¢=£è � F ³ � J�F � CXC �O���X�^� ¡ ¢O¢ @,¤ � ¡ � F�@,@ ¢ Æ �=� ©½¡ �^º @ £=Ç F<¥ ­ ¾q@¬¡ ¢=£È¸ GD@ £U° ?O¡ ¥ ç ¤ ��� @¿¡ ¢�£�­ ¾M@x¡qG @ �§¢ C � @ � ¡0E¿@B � ¥ �½��� ¡q¤�¤ �A� ¡-C �¦�q¢ ² �O� ¤§@ ¸ G @ £ ¡ ¢=£ è � FÌ¡qG @¿¡-CXC � @ � C � @,G °u�6�i� @ ¢=£ ¡ÀE¿@ �D� ¡ ¨ @ � ¾q@,G3J ç ¤ ��� @uE ��� C � ¡ ¢=£� C � ¾M@,G�C ��­ ¾q@ ² �O� C � @ ¢Ì� @ ¢�£O�I� CIC � G �q�=¨q� C � @ �^� ¡ ¢=¢ @,¤ « ¡0¶zC @,G � � E¿@xB � C @ ¢ C � ¡q¤ �+� GDG � BAC �¦�q¢�¯l° ? � E � ¤�¡0GD¤§¥¡-CXC � @¿G @ � @ � ¾ �§¢=¨ @ ¢=£ J ¸ G @ £ GD@ � @ � ¾q@ � C � @uE¿@ �D� ¡ ¨ @¿¡ ¢=£È� ¡ ¢�£O�I� C � ¾M@,G�C � è � F ° ? � BOB �M� @ ­ ¾M@¬¡ ¢=£È¸ G @ £² ¡ ¢ CÄC �x��� @�C �O���d�^� ¡ ¢O¢ @,¤�C � @,» �^� ¡ ¢O¨ @ �½� E¿@�E¿@ �D� ¡ ¨ @ �·� ¶�C � @ � G � ² ¢Ì« ¡0C ç ¤ ��� @0bÉè � F ³ � @+»AB�@ ¢=� @ ¯+°��o� @,¥£A�u� � F<¥ �¦¢ ¶ � GDE �§¢O¨uç ¤ ��� @�¡ ¢�£ è � F�C � ¡0CoC � @ �^� ¡ ¢O¢ @,¤ ����¢O�q��� ¥ ² � C � F � C � F�@ �§¢O¨f3=� BOB�@ £ ² � C � BOG � F=¡0F � ¤ � Cª¥5 °Ä�o� @,¥À¡ £ ¾ ��� @ ç ¤ ��� @5¡ ¢=£ è � F)C �u�=� @ �½� E¬@X@ ¢=�+�A£A�¦¢O¨Oc0£ @ �,�A£A�§¢=¨¿�D�^� @#E¬@ �,°Ëç ¤ ��� @x¡ ¢=£ è � F�¡ ¨ G @#@ �M¢ ¡ ¢@ ¢��+�A£A�¦¢O¨��D�^� @,E¿@ ê ¡ ¢=£ ¡ £ @ �+�A£A�¦¢O¨R� �^� @,E¿@ M ¡ ¢�£��§¢ C � @ � G ¢ ¡ � ¾q@+C C @ � � ¡qG @XC � @ � @�¶ �O¢=� C �¦�q¢=� ² � C ��­ ¾M@¡ ¢�£)¸ G @ £ ¡ � ² @#¤§¤ °êø¢ C G � C �u� CËEu¡ ¥5F�@oC � ¡0C ­ ¾M@ ² ��� � @ � C ���=� @oC � @ Æ ¢O�q��� @ Ç C �:� @ ¢=£¿� � E¿@oE¬@ � � ¡ ¨ @ ��� ¶ � @#G � ² ¢ C �:¸ GD@ £�° ?A¡ ¥� � @ � ¡ � ¡uE¿@ �D� ¡ ¨ @06 ² �O���^���� ¡uBO¤�¡ �¦¢ B=¡qB�@#G � E¿¡ ¨ @MJ ² � @#G @:@3¡ �^� B � »A@,¤ � ¶�C � @xB=¡ ¨ @ �¦� N �¦¢=£ @,B�@ ¢�£ @ ¢ C ¤¦¥

N+櫅

Page 8: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

² � C � B=G � F=¡0F � ¤ � Cª¥�5 °:�o� @ ² ¡ ¥ � � @ � @ ¢=£O� 6�C ��¸ GD@ £s« ¡0C ç ¤ ��� @ ³ � @+»AB�@ ¢=� @ ¯���� C � ¡-C ² � @ ¢Èç ¤ ��� @ ¨q� ¾q@ ��� @,G¡R@ ¢=�+�A£ @ £ E¿@ �D� ¡ ¨ @ êR« - ¯ C � C G^¡ ¢=� E � C3J ­ ¾q@ � @ ¢�£O��� ¾M@,G ê�« - ¯ ��6 °I¸ G @ £ GD@ � @ � ¾M@ � ¦P� êR« - ¯ �d6 « C � @�^� ¡ ¢O¢ @,¤ £A� @ ��¢O� C �§¢ C G �A£A�=� @x¡ ¢ ¥ ¢O�M�¦� @ ¯ ¡-CIC � @¿GD@ � @ � ¾ �¦¢O¨ @ ¢=£ ¡ ¢=£ B=¡ �D� @ ��� C �q¢ J �=¢ C^¡0E¿B�@,GD@ £ J�C � è � F�JF � C¿¡0¤ �½� G @,CD¡ �¦¢=� ¡ �+� B¼¥ °ç�� ¶�¡0G¬¡ �5ç ¤ ��� @À¡ ¢=£ è � F ¡0GD@ �+�M¢=� @#G ¢ @ £ J ¢O� C �O�¦¢O¨ Eu¡ � ¤ ���+�¦�q���:���5�A�,�,� G �§¢O¨ µ² � C �ý�O�§¨M� BOG � F=¡qF � ¤ � Cª¥ M« ¦ ¯ �e- ¡ ¢=£ � � C � @,¥&¡qG @)@+» �^� ¡ ¢=¨q�¦¢O¨ E¿@ �D� ¡ ¨ @ � ¡0C � ¡0B=¡ �+� Cª¥ � ¶�C � @ Æ ¢O�q��� ¥�^� ¡ ¢O¢ @,¤ ÇO° è � C ¢O� C @�C � @ � � C � ¡-C �§�M¢ ² ° G ° C °�­ ¾q@:¡ ¢�£À¸ G @ £U°o¸ GD@ £ ¡0¤ � �¬º<¢O� ² ��ê ¡ ¢=£PM ¡ ¢�£i� ¡ ¢i�,� E¿B � CD@6=�]¦f! êR«EM« ¦ ¯½¯ � êR« - ¯ �?6f! êR« - ¯ J ² � C �i�O�§¨M� BOG � F=¡0F � ¤ � Cª¥ ° ? �R­ ¾q@�¡ ¢=£�¸ G @ £ ¡qG @:¡q¤ � � @+» �^� ¡ ¢O¨q�¦¢O¨E¿@ �D� ¡ ¨ @ � ¡qE �q¢O¨ C � @,E � @#¤§¾M@ �R« ² � C �û�½� E¬@ � Eu¡0¤¦¤�BOG � F=¡qF � ¤ � Cª¥ � ¶o@+» �^� ¡ ¢O¨q�¦¢O¨À�§¢=�,� GDG @ � C�E¿@ �D� ¡ ¨ @ �D¯+° è � C¢O� ² � ¶ ² @ �,�q¢=� ��£ @,G ç ¤ ��� @fb ­ ¾q@�C �q¨ @+C � @,G)¡0C �q¢ @@ ¢=£ � ¶XC � @ ¢O�q��� @,¤¦@ �D�R�^� ¡ ¢=¢ @,¤úJ�¡ ¢=£ è � F,b ¸ G @ £C �M¨ @,C � @#GI¡0C�C � @ � C � @#G�@ ¢=£ J�C � @¬B=¡qG½C � @ � ¡qG @:@,» �^� ¡ ¢O¨M�§¢=¨ F � C � ¡-CX¡RG^¡-C @ � ¶·¡0C�¤¦@#¡ � C \¿« 5 ¯ � 7&« 5 ¯ ¡ � G �M�D�C � @ ¢O�q��� @#¤§@ � �d�^� ¡ ¢O¢ @#¤ « ¡ � � � E �§¢=¨ ² @XF�@,¤ � @#¾q@XC � @XC �¦¨q� C ¢ @ � ��� ¶6C � @ ¢O�M�¦� @,¤¦@ �D�o�+�A£A�¦¢O¨ C � @ � GD@,E ¯+° ? �§¢�� @ ² @¡0GD@ ¢O� GDEu¡0¤ �T�#�§¢O¨¬�½� C � ¡-CoC � @IG^¡-C @�C � @ ¢=�q��� @#¤§@ � �o�^� ¡ ¢O¢ @,¤ ��� NqJ ² @ ¨ @+C \¿« 5 ¯ � 7 « 5 ¯ ��N -��o�O���o��� C � @X¤ �¦¢OºF�@+C ² @,@ ¢ C � @ ¢O�q��� ¥ � ¡ � @�¡ ¢=£ C � @ ¢O�q��� @,¤¦@ �D��� ¡ � @ � ¶6C � @5? � ¡ ¢O¢O�M¢ C � @ � G @#E �,°

gih�h ������kjä ��!�¡A!3����*�/Uå3;¼. �1*þ!3"7;û�1;<'0!#/7�-;�� ± @¿E¿@ ¢ C �¦�q¢Ì�½� E¿@ ¢O� CD¡0C �¦�q¢ C � ¡-C ² @ ��� @ £ @3¡0GD¤ � @,G � GXEu¡ ¥ �=� @ �¦¢¤�¡-C @#G�¤¦@ � C � GD@ �#°0l £ @ ¢O� CD@ � C � @ � @,C � ¶ �§¢ CD@ ¨ @#G � J l7m ) £ @ ¢=� C @ � C � @ � @,C � ¶ ¢O�q¢ µ ¢ @ ¨ ¡0C � ¾q@ �¦¢ C @ ¨ @,G � J�¡ ¢�£9l !C � @ � @,C � ¶�B �M� � C � ¾M@ �§¢ C @ ¨ @#G �#°Sn £ @ ¢=� C @XC � @ � @+C � ¶%GD@#¡q¤ � J=¡ ¢=£Yo C � @5GD¡0C �¦�q¢ ¡q¤ �#°·¸O� G�GD@#¡0¤ ¢¼� E5F�@,G ��p ¡ ¢=£q J�C � @ ¢O� CD¡0C �¦�q¢ ß p X q â � C^¡ ¢=£=� ¶ � G:C � @ � ¤ �¼� @ £9�§¢ C @#G ¾-¡q¤·¶ÊG � E p C � q J �1° @ ° J�C � @ � @+C } �ñ� n � p,� � � q �¼J² �O� ¤§@ «&p X q ¯��¦� C � @ � B�@ ¢û�§¢ C @#G ¾-¡q¤ËF�@,C ² @#@ ¢?p ¡ ¢=£ q °�¸O� G5¡ ¢û�¦¢ C @ ¨ @,Gr+�J ² @ ² � ¤§¤ �=� @Èß +¼â·C ��£ @ ¢O� CD@uC � @� @+C } N#X�&i&i&¨X�+y� °�ê ¶ M×��� ¡ £A�¦� C G � F � C �¦�q¢��q¢ C � @ �=¢O� ¾M@,G � @ F J�C � @ ¢�`fs M�£ @ ¢=� C @ � ¡RGD¡ ¢=£A� E�¾-¡0G � ¡0FO¤¦@ `£ G^¡ ² ¢ ¶ÊG � E F ¡ �,�+� G £O�§¢O¨ C � C � @ £A�¦� C G � F � C �¦�q¢wMi°�¸O� GI¡ ¢ @,¾M@ ¢ C�tÑâ F J�C � @¬Â � ¡ ¢ C � Cª¥ ö GFu �J� ß ` �vtU⣠@ ¢O� CD@ � C � @XBOG � F�¡0F � ¤ � Cª¥ � ¶6C � @X@,¾M@ ¢ C[t ² � @ ¢?` �¦�o�^�O�¼� @ ¢ ¡ �,�+� G £O�§¢O¨ C ��Mi°Ë¸O� Gd¡5GD@#¡q¤Íµ ¾-¡0¤ � @ £ ¶ �O¢=� C �§�M¢w ÷�F Wxn JdC � @À � ¡ ¢ C � Cª¥ ­ »AB u �J� ß w «±`ȯ â £ @ ¢O� CD@ � C � @)@+»AB�@ � CD@ £ ¾ ¡q¤ � @ � ¶ w «E`ȯ ² � @ ¢ ` ���x�^�=�M� @ ¢¡ �#�+� G £A�¦¢O¨ C ��Mi°�±Þ� @ ¢ C � @ £A��� C G � F � C �¦�q¢?M������ ¤§@3¡0GĶÊG � E �+�M¢ CD@+»<C#J ² @�Eu¡ ¥R¡qFOFOGD@,¾ � ¡0C @�C � @ � @X � ¡ ¢ C � C � @ �C �:ö G#ß tUâ�¡ ¢=£¿­ »AB u ß w «±`̯ â ° ? � E � ¤�¡0GD¤¦¥:�Ë¡0G u �J� ß w «E`ȯ â £ @ ¢O� C @ � C � @d¾-¡0G � ¡ ¢=� @ � ¶ w «E`ȯo«Ê�ú° @ ° Jy�Ë¡0G « w «±`̯½¯ �­ »AB�ß « w «E`ȯ½¯ > â2! ­ »AB6ß w «±`̯ â > ¯l°z ��$&;£¢/¡%å3��'£17�-� ¢U¡%¢%�1���Ê!^>](�¡='0!�å Ý @#G @ ��� ¡� �O���^º G @ � ¡0B � ¶<F�¡ � �¦� ¶�¡ � C �6�q¢ BOG � F�¡0F � ¤ � Cª¥�¡ ¢=£ @+»AB�@ � C^¡-C �§�M¢=�,°

' �-�2¢/¡{¢����1�Ê!^> Ã�¢ @ � ¶7C � @�E �M� C ��� @ £ ¶�¡ � C �d�q¢ BOG � F=¡qF � ¤ � Cª¥ �¦� C � @ �O¢=�§�M¢ F �q�O¢�£U÷·ö G3ß t (4{ t > â �ýö G#ß t ( âV�ö G#ß t > â<& Å�� C @XC � ¡-CdC � @�F �M�O¢=£ Eu¡ º @ �o¢O� Æ �¦¢=£ @#B�@ ¢=£ @ ¢�� @ Ç ¡ � � � E¿BAC �¦�q¢��,°0�| 1·;<'0!�¡O!#����*Uå ç�¢ ¡0¤ �q¨M�q�=� C � C � @u¡0F � ¾q@ ² @ � ¡ ¾M@ ÷X­ »AB6ß ` ( � ` > â�� ­ »AB6ß ` ( ây� ­ »AB�ß ` > â�& Å�� CD@¬C � ¡0CC �O���I�¦� ¡ ¢ @# � ¡q¤ � Cª¥ -:ê ¶ÄG^¡ ¢�£A� E×¾-¡0G � ¡0FO¤¦@ � ¡0GD@ �¦¢=£ @#B�@ ¢=£ @ ¢ C3J�C � @ ¢ ² @ ¨ @,CX¡)BOG �<£O�=� C�GD@,¤�¡-C �¦�q¢��½�O� B­ »AB�ß ` ( ` > â�� ­ »AB�ß ` ( â ­ »<B7ß ` > â °

4x��*~}�;¼�3!3��*%��17�-� ¢U¡%¢%�1���Ê!3��;Våx!#�û; | 1·;<'0!S¡A!#�1��*Uå���? �¦¢=� @x@+»AB�@ � C^¡-C �§�M¢=� ¡qG @:E � G @5¡qE¿@ ¢ ¡qFO¤§@:C � ¡q¤ ¨ @,FOG^¡ ���E¿¡ ¢O� B � ¤�¡-C �¦�q¢�� J � C �¦�o� ¶zC @ ¢À��� @,¶ � ¤UC �R�,�q¢ ¾q@#G½C � CD¡-CD@,E¿@ ¢ C �o�q¢ BOG � F=¡qF � ¤ � Cª¥¿C �R� CD¡-CD@,E¿@ ¢ C �o� ¶�@,¾q@ ¢ C �#°�o� @ � CD¡ ¢�£ ¡0G £ ² ¡ ¥ÈC �Ì£A� C �O�¦�x��� C ���=� @ Æ �¦¢=£A��� ¡0C � G5¾-¡0G � ¡qFO¤¦@ �DÇO°¸O� Gx¡ ¢ @,¾M@ ¢ C�tËJ�¤¦@+CI�$�9F�@)C � @L � N,µú¾-¡q¤ � @ £ ¾-¡0G � ¡0FO¤¦@ ¨q� ¾q@ ¢ F<¥�� � «±`ȯ ��N � ¶ ` �;tÞ¡ ¢=£ �$� «±`ȯ �ÎL � C � @#G ² ��� @ °��o� @ ¢ ² @ � ¡ ¾M@­ »AB u ß �$� «E`ȯ â¨� ö G3ß t�â °

4x��*~}�;¼�3!3��*%�û; | 1·;<'0!�¡O!#����*Uå¿!#�w17�-� ¢U¡%¢%�1���Ê!3��;Våy�I? �¦¢=� @·BOG � F=¡0F � ¤ � C � @ � ¡0GD@�C � @·Â � ¡ ¢ C � C � @ � C � ¡-C � ¡ ¾q@�E � GD@�§¢ C �=� C � ¾M@dE¬@3¡ ¢O�¦¢O¨ J-C � @ � @�¡0GD@ÄC � @dE � GD@ � C^¡ ¢=£ ¡0G £ C^¡0G ¨ @+C ��� ¶ �q� G �¦¢ ¾q@ � C �§¨ ¡-C �¦�q¢6° ? �¦¢=� @�@+»AB�@ � C^¡-C �¦�q¢��´ ¨q� GD@ �§¢ BOG �¼� ¶ � J ² @ ² �M� ¤ £ ¤ �¦º @¬C � ´ ¢=£ ² ¡ ¥ � C �i�+�q¢ ¾M@,G C � CD¡-CD@,E¿@ ¢ C �X�q¢ @,»AB�@ � CD¡0C �¦�q¢=� F=¡ �^ºi�§¢ C �BOG � F=¡0F � ¤ � Cª¥ � CD¡0C @,E¿@ ¢ C �,°¬�o�O���I�,�q¢ ¾q@#G � �¦�q¢���I¢O� C � CD¡ ¢�£ ¡0G £U° ?<@#¾q@,G^¡0¤ Æ CD¡ � ¤ �§¢ @# � ¡0¤ � C � @ �DÇ ¡qG @ �=� @ £C � ¡ �^� @ � ¾q@oC �O�����,�q¢ ¾q@#G � �¦�q¢ J0@ ° ¨�° J Á ¡qG ºM� ¾ ³ � J ®Ä� @#F¼¥ �^� @#¾ ³ � J¼¡ ¢=£)®Ä� @#G ¢=�0íd³ �#÷%± @ � C^¡-CD@�C � @,E F�@#¤ � ² ÷

N+µøì

Page 9: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� ¡A�����O}4��åu��*%;��U/U¡O�1�Ê!^> ¸=� Gû¡ ¢O�q¢ µ ¢ @ ¨ ¡-C � ¾M@sG^¡ ¢�£A� E ¾-¡0G � ¡0FO¤¦@ ` ¡ ¢�£ B �M� � C � ¾M@2G @3¡0¤2�ÄJuC � @ ¢ö G3ß ` +;��â � K4� u��� °

45"%;�¢U>�' "7;�}4�Tåu�1*7;O�U/U¡O����!^> êø¢X� C ��¨ @ ¢ @#GD¡q¤ ¶ � GDEÀJ#C �=�¦�6�§¢ @3 � ¡0¤ � Cª¥ �¦� © �=� C%¡ ¢ ¡0BOB=¤ ��� ¡0C �¦�q¢X� ¶ Á ¡qG ºM� ¾ ³ ��¦¢ @# � ¡q¤ � Cª¥C � C � @RG^¡ ¢�£A� E ¾ ¡qG � ¡0F=¤§@.� > J6¶ � G5¡0GDF � C G^¡0GD¥�� °)êø¢ C � @ ¨ @ ¢ @#GD¡q¤�¶ � GDEÀJ � C �¦�  �=� CD@� ¡qG £ C �R� @,@ � C ��� C GD@ ¢O¨ C � J � � ² @ ¨M� ¾M@X¡ � B�@ �+� ¡0¤�¶ � G E °å @,C��'� [ ®� ° ( � � J ² � @#G @ËC � @�� � ³ �6�¦£ @ ¢ C ��� ¡q¤§¤¦¥ £O�¦� C G � F � C @ £ GD¡ ¢=£A� Eþ¾-¡0G � ¡0FO¤¦@ � C � ¡-C�¡0GD@�B=¡ � G ² �¦� @« F � C ¢O� Co¶ � ¤¦¤¦¥ ¯��¦¢=£ @#B�@ ¢=£ @ ¢ C °·å @,C ­ »AB6ß � � â��,�È¡ ¢�£ �Ë¡qG#ß � � â�� à > °��o� @ ¢ ¶ � G����2LOJ ² @ � ¡ ¾M@ö G3ß � + « �=�d� ¯*§ â ��� C®�� C °45"%;¼�-*7�*�ñ¢·��/%*7.Uå ê ¶<� ( Xi&�&i&¨XF� ® ¡qG @ �+� E¿BO¤¦@+CD@,¤¦¥ �§¢=£ @,B�@ ¢=£ @ ¢ C � C ��� B �¼� � � F=¤§@�C �ý¨ @+C � CDG �M¢O¨ @#GF �q�O¢=£=�R�q¢ C � @BOG � F=¡qF � ¤ � Cª¥ûC � ¡-CRC � @ � G � � E £ @,¾ � ¡0C @ � E �=�^� ¶ÊG � E C � @ � GR@,»AB�@ � CD¡0C �¦�q¢�°�± @�+�M¢=� �¦£ @#GoC � @ � B�@ �+� ¡0¤ � ¡ � @ � ¶7¾-¡qG � ¡0FO¤¦@ � C^¡ º<�¦¢O¨ ¾ ¡q¤ � @ �o�¦¢ C � @ �¦¢ CD@,GD¾-¡0¤Ëß L%X,N,âå @,C�� ( Xi&�&i& X�� ® F�@ �¦¢=£ @,B�@ ¢�£ @ ¢ CÄ¡ ¢=£¿�¦£ @ ¢ C ��� ¡q¤§¤¦¥ £A��� C G � F � C @ £ G^¡ ¢�£A� E ¾ ¡qG � ¡0F=¤§@ � CD¡ º<�¦¢O¨ ¾-¡0¤ � @ ��¦¢ C � @ �¦¢ CD@,GD¾-¡0¤Äß L%X#N+â ² � C � E¿@#¡ ¢ � °�å @+CZ�¸� [ � � � °X�o� @ ¢�ö G3ß � + « �?�>� ¯*§ â ��� �#� � C�E > � ® J² � @#G @ �:��� C � @�F=¡ � @ � ¶%C � @ ¢ ¡0C � G^¡0¤�¤ �q¨ ¡0G � C � E °

¸O� Go¶ � G C � @#G�@,¤�¡0F � G^¡-C �§�M¢)�M¢ BOG � F�¡0F � ¤ � C � @ � ¡ ¢=£ @+»AB�@ � C^¡-C �§�M¢=�d�q¢ @IEu¡ ¥ �,�q¢=� � ¤§CdC � @XCD@+»<C �M¢�� ¡ ¢=£A� E ��� @ £ç ¤ ¨q� G � C � E � ß ìMK â °

N+µøé

Page 10: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� ��������� �

������������������ ��!#"%$&��')(+*�!,�-��.%/%'0!#�1��*2!3�&45�6.7�1*7�98:"%;<�=� > ?<@#BAC @#E5F�@,G:N3LOJOK0LMLONPRQ%SUT�VXW=Q��

[6\^],_1`AaD\+a,bdceMf#gA`ih�`=fMe-j h�],alk�m^\#bxr�aN�a e�ðMe�I g?�oj�e Y e0y k�7�<£ ¡ ¥ ² @ ² � ¤§¤ �+� ¾q@#G·C � @X¶ � ¤¦¤ � ² �§¢O¨ C � B ���,�#÷

� ®Ä�q¢ ¾q@#G � @�C � ? � ¡ ¢=¢O�q¢�³ �d�+�A£A�¦¢O¨ C � @ � GD@,E °� ? � E¿@XG @#Eu¡0G º<���M¢ ? � ¡ ¢O¢O�M¢�³ �d�+�A£A�¦¢O¨ C � @ � GD@,E °� ­ GDG � G �,� GDG @ � C �¦¢O¨¿�+�A£ @ �,°� å��¦¢ @#¡qG �,�A£ @ �#°

î¿|#{ � �x�I ¬��~��7� �%�¢¡)���:�i���x�Y£½�ù�d�R��#��� �������5~���ñ

� @ � ¡0¤¦¤7C � ¡0C�C � @uè �¦¢ ¡qG ¥i?<¥<E¿E¬@,C G �¦�u®Ä� ¡ ¢O¢ @,¤ « èo? ®o¯ ² � C � B=¡0G^¡0E¿@+CD@,GÙ5 ��� C � @ �^� ¡ ¢=¢ @,¤7C � ¡0CXC G^¡ ¢=� E � C �F � C � J 3=� BOB �¦¢O¨ @3¡ �^� C G^¡ ¢=� E � C C @ £ F � C ² � C � BOG � F=¡0F � ¤ � Cª¥�5 �§¢=£ @,B�@ ¢=£ @ ¢ C � ¶Ë¡0¤¦¤ � C � @#G�@,¾M@ ¢ C �#°·å @,C ��� C^¡0G CoF<¥GD@ � ¡q¤§¤ �¦¢O¨ ? � ¡ ¢O¢=�q¢�³ �d�+�A£A�¦¢O¨ C � @ � GD@,E �§¢ ¶ � G Eu¡q¤§¤¦¥ °

à ¾q@,G�C � @¿èd? ® ² � C � B�¡0G^¡0E¿@+CD@,G�57J � C ��� B �M�D�½� FO¤¦@:C � CDGD¡ ¢=� E � C �¦¢ ¶ � GDEu¡-C �§�M¢ ¡-CX¡ ¢ ¥�GD¡0C @5¤¦@ �D�C � ¡ ¢ N�! 7&« 5 ¯l°

«��7�i¨q� ¾q@u¡ � @ ¢=� @ � ¶ �O� ² C � Eu¡ º @¬C � @R¡qF � ¾M@x¶ � G Eu¡q¤1J � @,GD@ �¦� C � @¿¶ � G Eu¡0¤·¾q@,G � �§�M¢È�¦¢ ¡0¤¦¤ � C �  � ¡ ¢ C � ´=@ £¨ ¤ � GD¥ ÷ Æ ¸=� G¬@,¾q@#G ¥P5,� (> ¡ ¢=£ 8SXFR���L=J�C � @#G @À@+» ��� C � ¡ ¢ § ) ��é � �=�^� C � ¡-C¿¶ � Gx@#¾q@,GD¥ § + § ) ¡ ¢=£+ ��« N�! 7&« 5 ¯ !�8 ¯9§ J¼C � @#G @I@+» ��� C�¶ �O¢=� C �¦�q¢=��ê�÷{} L%X#N���ë W } L2X,N#� ® ¡ ¢=£?M�÷{} L2X,N#� ® W } L%X#N���ë � �=�^� C � ¡0C

ö G@ �J�T¤$¥ ¦ X V ��_O§ ß M«LêR« - ¯ �?6 ¯ �5-)âZ+�N�!fR�X² � @#G @ F ë �¦� C � @ �=¢O� ¶ � G E £A��� CDG � F � C �§�M¢i�q¢�} L2X,N#��ëx¡ ¢=£PM � X ® ��� C � @ £A��� C G � F � C �¦�q¢i�q¢P§ F � C ���^�O�M� @ ¢��¦¢=£ @+µB�@ ¢=£ @ ¢ C ¤¦¥ ² � C � @#¡ �^� F � C�F�@ �¦¢O¨ N ² � C � B=G � F=¡0F � ¤ � Cª¥$5 ° Ǽ¯± @ ² � ¤¦¤ ¢O� ² BOG �<� ¶%¡ �+�M¢ ¾M@,G � @�C � C �O�¦� C � @ � GD@,E °

K µ^N#L

Page 11: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

8:"%;<�=�-;<$ m��ECñn w0a¿\ib-\+alp 5p� (> e0j�f 8SXFR]��L Kd_ÊgO\,a \R\tsMkOI^_LI¿e0j¥§ ) �'é Il`=]DgÈ_ÊgOe0_�h+w0au\ib-\+alp�§ + § ) K+6+ « N�! 7&« 5 ¯ �d8 ¯9§/K�e-j�fuh^`Aj�],_1k�w0j%I�ê�÷�} L2X,N���ë W } L2X,N#� ® e-j�f�M ÷ } L%X#N�� ® W } L%X#N���ë Kokz_dkOI5_ÊgO\u]^e�I,\_ÊgOe-_

ö G@ �J� ¤$¥ ¦ X V ��_ § ß M«LêR« - ¯ �?6 ¯�3�5-)âZ+�N�!fR�XY gO\,a \$F ë kOI:_zg=\x`Aj=k h+w-a�a f0kOIl_1alk�m,`A_1k�w0j9w0j6} L%X#N���ë e0j�fQM � X ® kOI:_zg=\¬f0kOIl_1alk�m,`A_1k�w0j&w-j�§þm+kz_LIx]^gOw�I,\,j9kzj�fq\i�N=\+j�fq\,j=_úy p Y kz_zgÈ\^eq]^gm,kz_om^\,kzj�d N×Y kz_ÊgQN�a wqm^eqm,kzy kz_úp 5 Rêø¨q¢=� G �§¢O¨ ¡0¤¦¤� � ¡ ¢ C � ´=@,G � ¡0F � ¾q@qJ�C � @¿@ �D� @ ¢=� @ �¦� C � ¡-C � ¶ ² @x¡0GD@xC GD¥ �¦¢O¨ C �i� @ ¢=£�¦¢ ¶ � G Eu¡-C �§�M¢ ¡-C:¡)GD¡0C @ � ¶N! 7&« 5 ¯ ��83J�C � @ ¢ C � @ £ @ �+�A£A�¦¢O¨���� @#G G �q¢ @ �q�=� ² � C � BOG � F=¡qF � ¤ � Cª¥À¡q¤§E �M� C5NMJ j�w=aue-_ú_ \,a ² �O���^� @ ¢=�,�A£A�§¢=¨¡ ¢�£)£ @ �+�A£A�¦¢O¨ ¶ �O¢=� C �¦�q¢ ² @ ��� @ °' �-���)( �o� @ � ¡0G £ B�¡0G C � ¶<C �=�¦� BOG �¼� ¶ ���%£ @ �,�¦£A�¦¢O¨��=� ² C ��£ @#¡q¤ ² � C � C � @·@ ¢=�+�A£A�¦¢O¨ ¡ ¢=£�£ @ �+�A£A�¦¢O¨ ¶ �O¢=� C �¦�q¢=�² �O���^� ¡0GD@ �,� E¿BO¤¦@+C @#¤§¥u¡qG F � C G^¡0GD¥ -7�7� G ¢=�·�M� C#J ² @ ² � ¤§¤ �¦¨q¢O� G @oC � @�@ ¢=�+�A£A�¦¢O¨ ¶ �O¢=� C �§�M¢ @ ¢ C � GD@,¤¦¥qJ<¡ ¢=£R�§¨M¢O� GD@C � @ £ @ �+�A£A�¦¢O¨ ¶ �=¢=� C �§�M¢ ¡0¤¦E �M� C�@ ¢ C � GD@,¤¦¥ -I�o� @xEu¡ �¦¢ ¶ �A�,�=�����I�q¢ C � @¬@,GDG � G#J�¡ ¢=£ C � @x¶�¡ � C�C � ¡-CIC � @¬@,GDG � G£A��� CDG � F � CD@ � C � @¿C G^¡ ¢�� E � C½C @ £ ² � G £È� ¾q@#G�¡)¤�¡0G ¨ @ � B=¡ � @ � ¶oB �¼� � � F � ¤ � C � @ �R« ¡ ¢=£9�½� ¡ ¢ ¥ £ @ �,�A£A�§¢=¨ ¶ �O¢=� C �§�M¢� �O�q� ¤ £ F�@ � @#¤§B=¤§@ � �^¯l° ?<B�@ �,� ´ � ¡0¤¦¤¦¥qJ ² @ ¢O� CD@XC � @X¶ � ¤§¤ � ² �§¢=¨=÷

� �o� @ ¢¼� E5F�@,G � ¶7@,GDG � G �·���d�O¢ ¤ �¦º @,¤¦¥uC � F�@XC �¼�u� Eu¡0¤¦¤ � GoC �<� ¤�¡0G ¨ @ ÷�¸=� GDE¿¡q¤§¤¦¥qJ<¶ � Gd@,¾M@,GD¥.-�¡ ¢=£Pê Jö G@ ß ê�« - ¯ �Y6?� �)«EêR« - ¯ X « 5×!v8 ¯*§6¯ â�� ö G@ ß 6?� �)«D¨ X « 5×!f8 ¯9§6¯ â �>� �©A&C ® & « K ° N ¯

�o� @�@# � ¡q¤ � Cª¥)¡qF � ¾M@ ����� FACD¡ �§¢ @ £ F¼¥ �½� E¿BO¤¦¥RC G^¡ ¢�� ¤�¡-C �§¢O¨ C � @ � @ ¢ C @,G � ¶%C � @:F�¡0¤¦¤U¶ÊG � E êR« - ¯ C � C � @� G �§¨M�§¢ª¨ J<C � @ � CDG �¦¢O¨u�+�M¢=� �¦� C �¦¢O¨¿� ¶�¡0¤¦¤6L ³ �,°��o� @ �¦¢ @# � ¡q¤ � Cª¥�¡qF � ¾M@ ��� ¡ � CDGD¡ �§¨M� C½¶ � G ² ¡0G £ ¡0BOB=¤ ��� ¡0C �¦�q¢� ¶ ®Ä� @,G ¢O�0í F �q�=¢=£O� µ �=� ² @#¾q@,G3J�C �=�¦� C � E¿@ ² @R¡0GD@ �=�½�¦¢O¨ C � @u¶�¡ � C�C � ¡0C � C:BOG � ¾q@ � C � ¡0Cx¡ÀGD¡ ¢=£A� E¾ ¡qG � ¡0F=¤§@ �¦��¢O� Cd¤ �§º @,¤¦¥uC � C^¡ º @ �M¢ ¡¬¾-¡0¤ � @�E ���^� ¤¦@ �D� C � ¡ ¢�� C � @+»AB�@ � C^¡-C �§�M¢�° ? � E � ¤¦¡qG ¤¦¥qJ ² @ ¨ @,CoC � ¡0C

ö G@ ß ê�« - ¯ �Y6 3� �)«EêR« - ¯ X « 5���8 ¯*§6¯ â�� ö G@ ß 6?� �)«D¨ X « 5×!f8 ¯9§6¯ â �>� �©A&C ® &� /I� ¾M@ ¢ C � ¡0CRC � @@,GDG � G �¦� ¤¦¡qG ¨ @ « F � C ¢O� C�C �<� ¤¦¡qG ¨ @ ¯ J ¢=�&�½�¦¢O¨ ¤¦@iB �q�¦¢ C �§¢ C � @ � B=¡ � @ � ¡ � ¡ �O�§¨M�

BOG � F=¡0F � ¤ � Cª¥ � ¶�F�@ �¦¢O¨ C � @�GD@ � @ � ¾q@ £ ² � G £U° ?AB�@ �+� ´ � ¡q¤§¤¦¥qJ�¶ � G5@,¾M@,GD¥�-ÌJ ê ¡ ¢�£ ¦4� ��«Eê�« - ¯ X « 5��8 ¯*§6¯ ! �)«EêR« - ¯ X « 5=!Y8 ¯*§6¯ Jö G@ ß êR« - ¯ �Y6o�Ѧ¼â � §

K ������~AD� ® & « K ° K ¯�6��� @#@ ² � ¥�C � @u¡0F � ¾q@ �¦� C G � @MJ�¤§@,C:« � öÀ« ¦�X êR« - ¯½¯ F�@xC � @ Ý ¡qE¬E �¦¢O¨i£A��� C^¡ ¢=� @xF�@+C ² @,@ ¢ ¦¡ ¢=£êR« - ¯l°ÉÅ�� C @ ² @ � ¡ ¾q@�«~��ß « 5w!�8 ¯9§ X « 5¥�¬8 ¯*§ â °Éå @+Cª­�® F�@�C � @ ¢¼� E5F�@,G � ¶�F �§¢ ¡0GD¥s¾M@ � C � G �² � C � « �q¢ @ � ¡ ¢=£ § !>« � @#G � @ �,° ? �¦¢=� @�¡0¤¦¤o@,GDG � G5B=¡0C½CD@,G ¢=� 6 ² � C � C � @ � ¡0E¿@ ¢¼� E5F�@,G � ¶�@#G G � G �¡0GD@I@3 � ¡0¤¦¤§¥)¤ �¦º @#¤§¥MJ ² @ ¢O� CD@ ² @XC � @:BOG � F�¡0F � ¤ � Cª¥ � ¶ � ¡ ¾ �¦¢O¨ ¡ ¢ ¥�´O»A@ £ ¾q@ � C � G �+�M¢ CD¡ �¦¢O�¦¢O¨ @+»O¡ � C ¤¦¥G«�q¢ @ � ¡ � C � @)@,GDG � G:¾q@ � C � G ��� ¡-CxE �¼� C (¯�° °Ì�o�<�=� C ��� B=B�@#GxF �q�O¢�£ C � @)BOG � F=¡qF � ¤ � Cª¥ � ¶dC � @À@,¾M@ ¢ C�§¢  � @ � C �§�M¢ � C � �A¹R� @ � C � ¤ � ² @#G5F �q�O¢�£ ­�®�¶ � Gr« � ß « 5�!;8 ¯*§ X « 5P�,8 ¯9§ â °ûä�� �§¢=¨ C � @�¶�¡ � C¬C � ¡0C­ ® �5� � ¤ « «fX §6¯ !.� � ¤ « «w!iN#X §6¯ J¼¡ ¢=£ C � @d¶�¡ � C�C � ¡0C�­ ® �����§¢�� GD@#¡ � �¦¢O¨ ¶ � GS« �§¢ C � @�G^¡ ¢O¨ @Xß L%X ® > â J ² @¨ @+C�C � ¡ ¢ ­�® +=±�²F³ � ® X ® �® +´±�²F³ �������©A&� ® X ® �® °ËÅ�� ² ���½�¦¢O¨ C � @I¶�¡ � CoC � ¡0C�� � ¤ «½« 5o!�8 ¯*§ X §6¯G¶ KV�~�������©A&� ® J² @ ¨ @,CoC � ¡0CdC � @�BOG � F�¡0F � ¤ � Cª¥26o�4¦f! êR« - ¯���� ¡-C�E �¼� C ®>�µ~¶ ¤$·y¸�¹Q¦ °

�7���+�M¢ C �§¢<� @XC � @:BOG �<� ¶ªJ ² @X´ ¢ ¡0¤¦¤§¥À¤ �<�Mº ¡-C�C � @ £ @ �+�A£A�¦¢O¨ ¶ �=¢=� C �§�M¢&« C �=�q�O¨M� @,¾q@ ¢ C �O��� ¤ �<�qº ² � ¤¦¤6F�@:¾q@#G ¥� � B�@#G½´ �+� ¡0¤ ¯l°�å @+C4º �üK@ë�¡ ¢=£ ¤¦@+C } - ( X�&i&i&ZXU-ª»$� £ @ ¢=� C @�C � @�º�B �M�D�½� FO¤¦@ÄE¿@ �D� ¡ ¨ @ �,°7å @+CS¼ � � } ¦ � M« ¦ ¯ �- � �¿F�@¿C � @ � @+C � ¶�G @ � @ � ¾q@ £ ² � G £O� C � ¡0C5¡0GD@ £ @ �+�A£ @ £ C � C � @o�úC � E¿@ �D� ¡ ¨ @ °x�o� @ �M¢ ¤§¥�BOG � B�@#G½Cª¥ ² @ �=� @¡0F �q� C:C � @ £ @ �,�<£O�§¢O¨��¦� C � ¡-C [ »� ° ( � ¼ � ����K ® J �1° @ ° J%C � @ £ @ �+�A£A�¦¢O¨��� ¡ h^`Aj�]+_úk�w-j -û«úÃ�¢ C � @ � C � @,G � ¡ ¢=£ J

K µ^NqN

Page 12: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

C � @,GD@ ��� ¤ � C½CD¤§@X@,¤ � @�C �x�=� @ -ë¯5± @ ¢O� ² �=� @�C � @ � F � @#G ¾-¡-C �§�M¢=�Ë�¦¢ C � @IBOGD@,¾ �§�M�=� B=¡0G^¡ ¨ GD¡qB � C � BOG � ¾q@dC � ¡-CoC � @£ @ �+�A£A�¦¢O¨ ¶ �O¢=� C �§�M¢��¦�d¢=� Cd¾q@#G ¥R¤ �¦º @,¤¦¥uC �¿� �=�#� @,@ £U°å @,C�½xF�@�C � @�B=G � F=¡0F � ¤ � Cª¥ � ¶ £ @ �+�A£A�¦¢O¨5� �=�,� @ �D� ¶ � ¤¦¤¦¥ °�êø¢u� G £ @,G˶ � GËC � @ £ @ �+�A£A�¦¢O¨ C �5� �=�,� @,@ £ J ² @�E ��� C·B �¦�^º� � E¿@uE¿@ �D� ¡ ¨ @I- � C � @ ¢��+�A£ @R¡ ¢�£ CDGD¡ ¢=� E � C#J%¡ ¢=£ C � @R@,GDG � GX¾q@ � C � G06ÈE �=� C:F�@ � �=�^� C � ¡-C:C � @uG @ � @ � ¾M@ £¾q@ � C � G�¦�� êR« - � ¯ �Y6)E �=� C�¤ � @ �¦¢ ¼ � °Ë�o�O���d¨q� ¾q@ �,÷

½f� »j � ° ( j¾ ^y¿ÁÀ ö GV�X @ ß -��5- � ¡ ¢�£ 6o�ѦQ! êR« - � ¯ â � ö GV ß -��5- � â ö G@ ß 6=�4¦Q! êR« - � ¯ â<X² � @#G @�C � @ � @ �,�q¢=£ @3 � ¡0¤ � Cª¥)¶ � ¤¦¤ � ² � ¶ÊG � EùC � @:¶�¡ � C�C � ¡0C�C � @5@,¾M@ ¢ C ���+�q¢��½��£ @,GD@ £ ¡qG @ �¦¢=£ @#B�@ ¢=£ @ ¢ C °�¸%� »<@ £- � ¡ ¢=£ ¤§@,C �=� F �q�O¢�£ C � @ �§¢=¢ @,G � � E¿Eu¡-C �§�M¢ ¡qF � ¾M@ °2�o� @iBOG � F=¡qF � ¤ � Cª¥9C � ¡0C2- @# � ¡0¤ � - � �¦� @,»O¡ � CD¤§¥N � º � KV�¨ë °��o� @d@,¾M@ ¢ C�C � ¡0CS6��]¦�! êR« - � ¯������¦¢=£ @#B�@ ¢=£ @ ¢ C � ¶~-ù¡ ¢=£¿� � ² @ � ¡ ¢ @ � C � Eu¡-CD@oC �O���  � ¡ ¢ C � Cª¥� @,B=¡qGD¡0C @,¤¦¥ °�¸%� »�- � °:å @+C F � ��«Eê�« - � ¯ X « 5�!�8 ¯9§6¯ ¡ ¢�£� � } L%X#N�� ® ! �)«EêR« - � ¯ X « 5=�;8 ¯9§6¯x«Ê�ú° @ ° J FÎ�¦�C � @�B �M�§¢ C � C �<�u� ¤ �M� @�C �oêR« - ¯ ¡ ¢=£� C � @�B �M�§¢ C � C �<� ¶�¡0Go¶ÊG � E êR« - ¯+°·�o� @ ¢

j¾ ^y¿ÁÀ ö G@ ß 6=�4¦�! êR« - � ¯ â� j¾ ^�_ ö G@ ß 6=�4¦�! êR« - � ¯ â%�çj¾ ^�à ö G@ ß 6o�ѦQ! êR« - � ¯ â%� j¾ ^y¿ÁÀ � _ � à ö G@ ß 6��]¦�! êR« - � ¯ â� K � �~ADC ® �ñ� ¼ � � §K �������©A&� ® X

² � @#G @dC � @ � @ �,�q¢=£¿�¦¢ @3 � ¡0¤ � Cª¥¿¡0F � ¾q@o¶ � ¤§¤ � ² � ¶ÊG � E ­  � ¡0C �¦�q¢=��« K ° N ¯ ¡ ¢=£i« K ° K ¯l°·®Ä� E5F �¦¢O�¦¢O¨ C � @�¡0F � ¾q@MJ ² @� ¡ ¾M@ ÷

½ � »j � ° ( K ��ë ² K � �©A&C ® � § � ¼ � �K ������~AD� ® ´� K � �~ADC ® � § K �¨ëK ���Q���©A&� ® Ä »j � ° ( � ¼ � � Å� K � �~ADC ® � § K ��ëS�~���Q���©A&� ® ! ®

�o� @·C � @ � GD@,E�¶ � ¤¦¤ � ² � ¶ÊG � E�C � @Ķ�¡ � C6C � ¡-C%¶ � G6@#¾q@#G ¥78SXFR<�sL ² @ � ¡ ¢ B �¦�^ºu§ ) ¤�¡0G ¨ @·@ ¢O�M�O¨q�5� � C � ¡-C%¶ � G7@,¾q@#G ¥§ + § ) J � C ��� C � @ � ¡ � @�C � ¡0CoK � �©A&C ® � R � KX¡ ¢�£�§ KV��ë��)������~AD� ® ! ® � R � K « ¡ � � � E �¦¢O¨ +×+ « NU! 7&« 5 ¯ ��8 ¯9§6¯+°� @ � ¡0¤¦¤�C � ¡-C5¡0C�C � @R@ ¢=£Ì� ¶�C � @�BOG @#¾ �§�M�=� ¤§@ � C � G @ ² @ �½�=� ² @ £ C � ¡-C � ¶ ² @u¡ � � � E¿@ £ C � @ ¢O�q��� @#¤§@ � ���,�A£A�§¢=¨C � @ � GD@,E �¦� C �¦¨q� C «Ê�ú° @qJ � ¡ � ¡ �,�q¢ ¾q@#G � @ ¯ C � @ ¢ C � @ �+�M¢ ¾M@,G � @�C � C � @ ¢=�q��� ¥ �+�A£A�¦¢O¨ C � @ � GD@,Eù¶ � ¤¦¤ � ² �#°·±Þ�O� ¤¦@C � @:C � @ � GD@,EסqF � ¾M@ £A� @ ��¢O� C � E¿BO¤¦¥i¡ �+�M¢ ¾q@,G � @XC � C � @ ¢=�q��� @#¤§@ � ���+�A£A�¦¢O¨ C � @ � GD@,E�J�C � @¬BOG �<� ¶�C @ �^�O¢O�  � @���x¨ @ ¢ @#GD¡q¤o@ ¢O�M�O¨q� C �9� ¡0BOC � GD@�C � @ ¢O�q��� @,¤¦@ �D�x�,�<£O�§¢O¨ C � @ � G @#E�¡ � ² @#¤§¤ ° �o�O��� E � C � ¾-¡-CD@ � C � @)¶ � ¤§¤ � ² �¦¢O¨@+»A@#G �,�¦� @ °vyÆ��JǼzÉÈ Ê���Ë�ö G � ¾q@ �+�q¢ ¾M@,G � @ � ¶%C � @ ¢O�M�¦� @,¤¦@ �D�o�+�A£A�¦¢O¨ C � @ � GD@,E « ¶ÊG � E å @ � C � GD@¬N ¯l°

K µ^N3K

Page 13: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

î¿|lî Ì×��ñ���~4ÍR���x�Ρ)���:�i���¬�Y£ª��ó������5~���ñ

ÿoÐ1ÿdÐ½Ï Ïñ�½Û<Ú�ÖOØUÒAØÑÐ ØZ���ËÖ{Û�ªØ7Û¼ÛdÒ�Ü�Ó�Ô�Ô�ØZ�½Û? � ¡ ¢O¢O�M¢�³ �)�+�A£A�¦¢O¨ C � @ � G @#E ��� J � ¶ �+�M� G � @MJdE �=�^� E � GD@ ¨ @ ¢ @#GD¡q¤dC � ¡0C ² � ¡0C ² @ � ¡ ¾M@iBOGD@ � @ ¢ C @ £U°É± @�q¢ ¤§¥ÌBOGD@ � @ ¢ C @ £ C � @)G @ �½� ¤§C:¶ � G:C � @ � ¡ � @ � ¶oC � @Àè �¦¢ ¡qG ¥9?<¥<E¬E¿@,C G �¦��®Ä� ¡ ¢O¢ @,¤ °¸O� G � C^¡0G C @#G � J6C � @RGD@ � � ¤§C� ¡ ¢ F�@ ¨ @ ¢ @#GD¡q¤ ��� @ £ C � C � @ � ¡ � @ � ¶x¡0¤¦¤ Æ .����D� GD@+C @ Á @,E � G ¥<¤¦@ �D�À®Ä� ¡ ¢O¢ @,¤ �Ì«E.IÁÈ®��D¯½ÇO° ? �=�^���^� ¡ ¢O¢ @,¤ �¡0GD@ �^� ¡qGD¡ � C @#G ��� @ £ F<¥ C ² � ´ ¢=� CD@ � @+C � · ÝùGD@,BOGD@ � @ ¢ C �¦¢O¨ C � @ �§¢ B � CÀ¡q¤§B � ¡0F�@+C � ¶XC � @ �^� ¡ ¢O¢ @#¤�¡ ¢�£ ÞGD@,BOGD@ � @ ¢ C �¦¢O¨ C � @ �q� CDB � C�¡q¤§B � ¡0F�@+C � ¶7C � @ �^� ¡ ¢=¢ @,¤�· ¡ ¢=£ ¡¬CDGD¡ ¢=�½� C �¦�q¢ BOG � F=¡qF � ¤ � Cª¥REu¡-CDG � »]Ó|� } 5 ��Ô �MJ² � @#G @5 ��Ô £ @ ¢O� C @ � C � ¡0C�BOG � F�¡0F � ¤ � Cª¥RC � ¡-C�C � @ �q� CDB � CX¡0¤¦B � ¡0F�@+C �¦� á ¨M� ¾M@ ¢ C � ¡ ¢ C � @ �¦¢ B � C�¡0¤¦B � ¡qF�@,C �¦�à�°5± @¿G @3 �O� GD@:C � ¡-C [ Ô ^JÕ 5 ��Ô �ùN5¶ � GX@,¾q@#G ¥ à � Ý�J � � C � ¡-CXC �O�¦�X£ @,´ ¢O� C �¦�q¢ Eu¡ º @ �X� @ ¢=� @ °�±Þ� @ ¢ ² @¡-C C @#E¬BOCdC � C G^¡ ¢�� E � Cd¡ � @# � @ ¢=� @ � ¶ � ¥¼ExF � ¤ � ¶ÊG � E Ý � ¾M@,G�C �O�����^� ¡ ¢O¢ @#¤1J � C�F�@ � ¡ ¾M@ ���q¢ @#¡ �^� @#¤§@#E¬@ ¢ C � ¶C � @ �^� ¡ ¢O¢ @#¤ �§¢�£ @,B�@ ¢=£ @ ¢ C ¤¦¥)¡ ¢=£ BOG �A£A�=� @ � ¡ � @3 � @ ¢=� @ � ¶7@#¤§@#E¬@ ¢ C � ¶ÊG � E¸ÞËJO¡ �,�,� G £A�§¢=¨ C � C � @XC G^¡ ¢=� � C �¦�q¢BOG � F=¡qF � ¤ � Cª¥REu¡-CDG � »GÓ °/I� ¾q@ ¢û� �=�^� ¡ �^� ¡ ¢O¢ @,¤úJ �^� ¡qGD¡ � C @#G ��� @ £ F<¥9Ó¿J�? � ¡ ¢O¢O�q¢Ì¨ ¡ ¾M@u¡)B=G �A� @ £A� GD@¬C ��+� E¿B � C @¿C � @ � ¡qB=¡ �,� Cª¥ � ¶C � @ �^� ¡ ¢O¢ @,¤ °��o�=�¦��� ¡0B=¡ �+� Cª¥uG @#¤¦¡0C @ � C � C � @�E � C � ¡0¤ �¦¢ ¶ � GDEu¡-C �§�M¢ F�@+C ² @,@ ¢ C ² � GD¡ ¢=£A� Eù¾ ¡qG � ¡0F=¤§@ �,°/I� ¾q@ ¢ ¡ £O�¦� C G � F � C �¦�q¢�MIÖ¿� ¾M@,G�Ý�J ¤§@,C à F�@·¡dG^¡ ¢=£A� Eü¾-¡0G � ¡0FO¤¦@ �^�O�M� @ ¢ ¡ �,�+� G £O�§¢O¨ C ��MIÖ�°7ö·�¦�^º ᬡ-C7GD¡ ¢=£A� E¶ÊG � E Þ ² � C � BOG � F=¡0F � ¤ � Cª¥u5 ��Ô °�. @ ¢O� C @IF¼¥ MIÖ X Õ C � @·© �q�¦¢ C £A��� CDG � F � C �§�M¢R�q¢ C � @�B=¡ � G ��«Là X*á ¯·� �5¨ @ ¢ @#GD¡0C @ £ J¡ ¢�£ F<¥ M Õ C � @dEu¡0G ¨q�¦¢ ¡q¤ £O�¦� C G � F � C �¦�q¢¿� ¶ á ° ? �¦¢=� @ MIÖ J M Õ ¡ ¢=£QMIÖ X Õ ¡qG @o¡0¤¦¤ £A��� CDG � F � C �§�M¢=���q¢ ´ ¢O� C @ � @+C � JC � @ � G�@ ¢ CDG � B¼¥ �¦� ² @#¤§¤ £ @+´ ¢ @ £U°�. @,´ ¢ @�C � @ Æ E � C � ¡0¤ �¦¢ ¶ � G Eu¡-C �§�M¢=Ç F�@+C ² @,@ ¢ ¾-¡0G � ¡0FO¤¦@ �à ¡ ¢=£ á «Ê� G�E � GD@�+� G GD@ � C ¤¦¥ � ¶�C � @�CDGD¡ ¢=� � C �§�M¢ E¿¡0C G � ».Ó ² � C �R�¦¢O� C � ¡0¤ £O�¦� C G � F � C �¦�q¢×MIÖ6¯ C � F�@ 7 «EMIÖ7¯ � 7 «EM Õ ¯ ! 7&«LMrÖ X Õ ¯l°? � ¡ ¢O¢O�M¢�³ � C � @ � GD@,E � �O� ² @ £ C � ¡0C�C � @ � ¡0B�¡ �+� Cª¥ � ¶ÄC � @ �^� ¡ ¢O¢ @,¤ �^� ¡0G^¡ � C @,G ��� @ £ F<¥�Ó¿J ��� C � @uEu¡-» � E � E� ¾q@#G�¡q¤§¤ £A��� C G � F � C �¦�q¢=��MIÖ J � ¶�C � @XE � C � ¡q¤ �§¢ ¶ � GDE¿¡0C �¦�q¢ F�@,C ² @#@ ¢?à ¡ ¢�£ á °�Ý @�¡0¤ �½�x¨ ¡ ¾q@I¡5¤ �¦¢ @#¡qG � ¥ � CD@,E² �O�¼� @ � � ¤ � C �¦�q¢À¨ ¡ ¾M@�C � @ £A��� CDG � F � C �§�M¢ C � ¡-C�Eu¡-» � E �T� @ � C �=�¦�d�¦¢ ¶ � G Eu¡-C �§�M¢�°

ÿoÐ1ÿdÐ1ÿ Ð�Ó%Ö�×G�#Ø�½Ó�ÔÙÒ�Ü�Ó�Ô�Ô�ØZ�½Û? � ¡ ¢O¢O�M¢�³ � C � @ � GD¥ý@+»<C @ ¢=£O� @,¾q@ ¢ ¶ � G C � @#G ° Å ¡0C � G^¡0¤ � � @ ¢ ¡qG �¦�M�u� ¶:@,GDG � GREu¡ ¥Þ¡ � C � ¡0¤¦¤¦¥ 3=� B � F � C � ² � C �� � E¿@ �+� G GD@,¤�¡-C �§�M¢ GD¡0C � @#G�C � ¡ ¢ £A�M�§¢O¨È�½��¦¢=£ @#B�@ ¢=£ @ ¢ CD¤§¥ °Èç��½� F � ¤�¡ �D�:� ¶ �½�=�^�s�+� GDGD@,¤�¡-C �¦�q¢��X�¦�x¨q� ¾q@ ¢ F<¥Æ Á ¡0G ºq� ¾ � ¡ ¢x�^� ¡ ¢O¢ @#¤ �DÇ J ² � @,GD@dC � @ �^� ¡ ¢O¢ @,¤ � ¡ ¢ F�@ �¦¢u�q¢ @ � ¶ � @#¾q@,G^¡0¤ « ´ ¢O� C @#¤§¥¬Eu¡ ¢ ¥ ¯�� C^¡-CD@ �#°U. @,B�@ ¢=£O�§¢O¨�q¢ ² �O���^�i� C^¡-C @IC � @ �^� ¡ ¢=¢ @,¤ ���d�¦¢ JAC � @�BOG � F=¡0F � ¤ � Cª¥ ² � C � ² �O���^��� C�Eu¡ º @ � @#G G � G � E¿¡ ¥�F�@ £A�§í @,GD@ ¢ C °? �=�^� E �A£ @,¤ � ¡qG @ �=� @+¶ � ¤ �§¢Þ� ¡0BAC � G �¦¢O¨ J � ¡ ¥qJ Æ F � G � CR@,GDG � G ÇÈ� � @ ¢ ¡qG �¦�M�#°Þêø¢ C �O���R� � C � ¡-C �§�M¢ C � @ �^� ¡ ¢O¢ @#¤Eu¡ º @ ��� B � GD¡ £A���I� @# � @ ¢=� @ ��� ¶%Eu¡ ¢ ¥À@,GDG � G �#°�Ã�¢ @ � ¡ ¢ E �A£ @,¤6C �O����� �q� G � @�F¼¥À¡ �^� ¡ ¢O¢ @,¤ ² � C � C ² ��� CD¡0C @ �«Ê¢=�q��� ¥ c ¢=� GDE¿¡q¤ ¯ ² � C � C ² �x£A�Íí @,GD@ ¢ C �^� ¡ ¢O¢ @,¤ �^� ¡0G^¡ � C @,G ��� C �¦�#� ¶ � GÄC � @�C ² �5� CD¡0C @ �,°d«�� @,@ ¸%�§¨M� G @IK ° N ¯l°�±Þ� @ ¢�¦¢ C � @ Æ ¢O�q��� ¥ Ç�� CD¡0C @¿C � @ �^� ¡ ¢=¢ @,¤ 3�� B � @,¾M@,GD¥F � C#J � ¡ ¥MJ ² � C � BOG � F�¡0F � ¤ � Cª¥ (> « ¡ ¢�£Ì� � ¡ �^� ¡ ¢O¢ @,¤ËC � ¡0C �¦�B�@,GDB�@,C � ¡q¤§¤¦¥ �¦¢ ¡ ¢O�q��� ¥ � C^¡-CD@ � ¡ ¢ C G^¡ ¢�� E � C ¢O�u�§¢ ¶ � GDE¿¡0C �¦�q¢�¯+°Ë±Þ� @ ¢i�§¢ C � @ ¢O� GDEu¡0¤ � CD¡-CD@qJ �O� ² @#¾q@#G#J¼C � @�^� ¡ ¢O¢ @,¤ 3=� B � F � C � ² � C �i�q¢ ¤¦¥)¡ � Eu¡0¤¦¤�BOG � F�¡0F � ¤ � Cª¥qJ � ¡ ¥�5 °d¸O� G C � @,G3J � ¶%C � @ �^� ¡ ¢O¢ @#¤ �����¦¢ ¡ ¨q� ¾q@ ¢� CD¡0C @:¡0CC � E¿@³� C�CD@ ¢=£O� C �i� C^¡ ¥ �¦¢ C � @ � ¡0E¿@ � CD¡0C @¿¡-CXC � E¿@

³ �þN ² � C � BOG � F=¡qF � ¤ � Cª¥ûN�! ")¡ ¢=£ C @ ¢=£O� C �?3=� B � C �� CD¡-CD@ ² � C � ¡ � Eu¡q¤§¤�B=G � F=¡0F � ¤ � Cª¥�" °·êª�d� C�B �M�D�½� FO¤¦@XC � C G^¡ ¢�� E � C �§¢ ¶ � GDE¿¡0C �¦�q¢À�q¢i� �=�^� ¡ �^� ¡ ¢O¢ @,¤zã ê ¶ � � J=¡0C² � ¡0C�GD¡0C @3ã ±Ì� G º<�§¢=¨ C �O�¦���q� C ² �q� ¤ £ F�@:¡ ¨q�<�A£ @+»A@,G �+��� @ -? � ¡ ¢O¢O�M¢�³ � C � @ � GD¥x¡ � C � ¡0¤¦¤§¥ ¨q� ¾q@ � C � @ � ¡qB=¡ �,� Cª¥ � ¶ �½���^� ¡ �^� ¡ ¢=¢ @,¤�¡ � ² @,¤¦¤ °�. @ �,� B � @,G �§¢O¨ ² � ¡-CËC � @�C � @ � G ¥� ¡ ¥ � ¡ ¢=£À�O¢ G^¡ ¾q@,¤¦¤ �§¢O¨ C � @�B=G �<� ¶ � ² �q� ¤ £ F�@:¡ ¨M�<�<£ C � B ��� ¶ � G�¡xC @,GDEùB�¡0B�@,G °

K µ^N æ

Page 14: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

NoisyNormal

q

q

1−q1−q

State Diagram

Normal Channel Noisy Channel

1−p

1−p

p

p

0

1

0

1

0

1

0

1

0.5

0.5

0.5

0.5

Ú ����/6�-;6m��EC ÷ ?¼CD¡0C @ £A� ¡ ¨ GD¡qE � ¶�¡ � � E¬B=¤§@�F � G � Cd@,GDG � G �^� ¡ ¢O¢ @#¤

ÿoÐ1ÿdÐLÚ Û�Ø�Ö%�ÝÜ�ÖOÖ%�·Ö,ÒÈÓ/��Ó�Ú¨�ªÒ�Û �ËÙ�Ó Ú2Ü�Ó�Ô�Ô�Ø��ç�¢)�§¢ CD@,GD@ � C �¦¢O¨ F<¥¿BOG �A£A��� C � ¶�C � @I? � ¡ ¢O¢O�M¢ C � @ � GD¥ �¦� C � @ � �5� ¡q¤§¤¦@ £ ÆkÞ @,G � @#G G � G � ¡0B=¡ �+� Cª¥ ÇX� ¶7¡ �^� ¡ ¢O¢ @,¤ °�7� E � C � ¾-¡0C @¬C �O���X¢O� C �¦�q¢ JU¤¦@+C �=�X�+�M¢=� �¦£ @#G�¡ Æ � C �=�^º Cª¥¼B�@ ² G � C @,G ÇO° ? � BOB �M� @5C � @ º @#¥ �I�¦¢ C � @¬Cª¥<B�@ ² G � C @#G¡0GD@ � C ���^º ¥À¡ ¢=£ ¤ �§º @,¤¦¥RC � BOG �A£A��� @�C � @ ² G �M¢O¨R� ¥¼ExF � ¤ ² � @ ¢ ¥ �q�À�O� C � C °d¸O� G C � @,G � � BOB �M� @XC � ¡0C�C � @:@,GDG � GB=¡0C½C @#G ¢��¦� ¾q@,GD¥ �½� E¿BO¤§@ °�ê ¶�¥ �q�u�=� Co¡:¤¦@+C½CD@,G � ¶UC � @ º @#¥<F � ¡0G £ Jq¥ �q�u¨ @,C�¡ �Ë�q� C B � C�@ � C � @#G·C � @ �,� GDG @ � Cˤ¦@+C C @,G� G5C � @ ¢ @,»¼C¿¤¦@+C½CD@,G � ¶dC � @À¡q¤§B � ¡0F�@+C ° ¡ ¢=£ C � ¡-C �½�=�^� ¡ ¢ @#G G � G � ¡0BOB�@ ¢�� ² � C � BOG � F=¡0F � ¤ � Cª¥ (> ¶ � Gx@,¾q@#G ¥º @#¥ � CDG �Mº @ �¦¢=£ @#B�@ ¢=£ @ ¢ CD¤§¥ °:êø¢�� C � @#G ² � G £O� J�Cª¥<B �¦¢O¨ªß GD@ � � ¤§C �I�¦¢�ß � G � JUCª¥<B �¦¢O¨G� GD@ � � ¤§C ���§¢f��� G \ J@+C �0° ¡ ¢=£ Cª¥<B �¦¢O¨Gà GD@ � � ¤§C �o�¦¢�àþ� G ßΫ�� � ² @ � ¡ ¾M@X¡ ² G^¡0B�¡0G �q�O¢�£=¯l°d« ?A@,@ ¸%�§¨M� GD@�K ° K ° ¯? � E¬@¬¡ ¢ ¡q¤§¥ � �¦��� ¶�C �=�¦�I�^� ¡ ¢=¢ @,¤7G @#¾q@#¡q¤ � C � ¡0C � C � ¡ � ¡ �^� ¡ ¢O¢ @#¤ � ¡0B=¡ �+� Cª¥ � ¶Ë¤ �q¨�> N æ °dêl° @ ° J�@3¡ �^�iº @#¥ � CDG �Mº @����� ¡0B=¡qFO¤¦@qJ �q¢ C � @X¡ ¾q@#GD¡ ¨ @ � ¶ �+�q¢ ¾M@,¥ �§¢=¨5�q¢ @ � ¶�N æ B �¼� � � F � ¤ � C � @ �,°�ê ¶7C � @�Cª¥<B�@ ² G � C @#G � ¡ £R¢=� CoF�@#@ ¢)� C ���^º J� C ² �q� ¤ £�� ¡ ¾q@ � ¡ £ ¡ � ¡0B=¡ �+� Cª¥ � ¶·¤ �q¨V> KJL °:�o�<�=� C � @¿@,GDG � G �+� C �I£O� ² ¢ C � @ ¢<� ExF�@#G � ¶ÄB �M�D� � F � ¤ � C � @ � B�@,G� C G �qº @IF<¥�¡¬¶�¡ � C � G � ¶�K °ê ¶ ² @¬C �=�§¢OºÈ� ¡0G £ý« ¡ � C � ¡q¤§¤¦¥Eu¡ ¥F�@ ¢O� C�@#¾q@ ¢9� �À� ¡0G £=¯ ² @ � ¡ ¢Ì� @,@u¡ ² ¡ ¥ � ¶o¡ �^�O� @,¾ �¦¢O¨ C �O���:� ¡qB=¡ �,� Cª¥ °? � E¿BO¤§¥ £O�q¢�³ C ��� @xC � @¬@,¾M@ ¢ µ ¢<� E5F�@,GD@ £ ¤¦@+C C @#G �I� ¶�C � @¿¡0¤¦B � ¡0F�@+C « èIJ . J ¸ JU@+C �0°ë¯ ¡ ¢=£ ² � G º)�M¢ ¤¦¥ ² � C � C � @�A£O£ µ ¢<� E5F�@,GD@ £��M¢ @ ��«�ç J ® J ­ @+C �q° ¯+° ? �§¢=� @·C � @,GD@ ���7¢O� B �M�D�½� F � ¤ � Cª¥ � ¶ �,�q¢ ¶ ���½�¦�q¢ ² � C �=�§¢ C � @ �A£O£ µ ¢¼� E5F�@,GD@ £¤¦@+C½CD@,G � J C � @,GD@ �¦�%¢O� ¡0E5F �§¨M�O� Cª¥ �¦¢ C � @�E¬@ � � ¡ ¨ @ «�� ¶�¡ ¢xçs� G�è �¦� GD@ � @ � ¾q@ £ J ç E �=� C � ¡ ¾M@·F�@,@ ¢ C � @ º @#¥ � CDG �Mº @Cª¥<B�@ £ J � ¶ ®�� G . ��� G @ � @ � ¾M@ £ J ®���� C � @ º @,¥ � C G �qº @5@+C �0°ë¯l°À�o� @ �§¢ CD@,GD@ � C �¦¢O¨ ¡ � B�@ � C � ¶�C �=�¦� ² ¡ ¥ � ¶ �=� �§¢=¨C � @ �^� ¡ ¢O¢ @,¤ ��� C � ¡0C ² @�¡ �^� @ � ¾q@�C � @ � ¡qB=¡ �,� Cª¥MJ¨Y kz_zgGá3\+a w)\+alaDw-a�-Ë�o�O��� E � C � ¾-¡-CD@ � ¡ ¨ @ ¢ @,G^¡0¤ �+�M¢=� @#BAC ÷Ë�o� @â%\,a w<�oala w-a=�ËegNOeM]+kz_úp�� ¶�¡ �^� ¡ ¢O¢ @,¤ ���d�§¢ ¶ � GDE¿¡q¤§¤¦¥ £ @,´ ¢ @ £ ¡ � C � @ � BAC � Eu¡0¤6GD¡0C @ � ¶%C G^¡ ¢=� E �¦�D� �§�M¢ C � ¡-C � ¡ ¢F�@:¡ �^�O� @,¾M@ £ ² �=� ¤¦@�Eu¡ �¦¢ C^¡ �¦¢O�¦¢O¨ ¡ � @,G � BOG � F=¡0F � ¤ � Cª¥ � ¶ £ @ �+�A£A�¦¢O¨ @,GDG � G °êø¢ C � @ � ¡ � @ � ¶dC � @ � C ���^º Cª¥<B�@ ² G � CD@,GxC � @ � @#G � @#G G � G � ¡0B�¡ �+� Cª¥Ì@# � ¡0¤ � C � @�? � ¡ ¢=¢O�q¢ � ¡0B=¡ �+� Cª¥ °��o�=�¦�x�¦�

K µ^N,á

Page 15: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

A

B

C

.

.

.

Z

A

B

C

Z

.

.

.

.5

.5

.5

.5

.5

.5

.5

.5

Ú ����/6�-;6m��Om ÷·®Ä� ¡ ¢O¢ @,¤U¶ � G�¡ � C ���^º Cª¥<B�@ ² G � C @#G

¢O� C�¡0¤ ² ¡ ¥ � C � @ � ¡ � @ °o¸O� G�@+»O¡0E¿BO¤¦@qJ=C � @ � @#G � @#G G � G � ¡0B=¡ �+� Cª¥ � ¶�C � @:F �¦¢ ¡0GD¥ � ¥<E¿E¿@+C G ���:�^� ¡ ¢=¢ @,¤U¶ � G�¡ ¢ ¥5 3�ÞL2X,N �¦�Ù� @,G �2-o«�ç�¢ ¥ � C G �¦¢O¨5� ¡ � B �¼�½� C � ¾q@IBOG � F=¡qF � ¤ � Cª¥ � ¶6F�@ �¦¢O¨¬�,� GDG � BAC @ £R�¦¢ C � C � ¡ ¢ ¥ � C � @#G � CDG �¦¢O¨=°ë¯5ê C��� CDG � @xC � ¡-CIC � @ � @,G � @#G G � G � ¡qB=¡ �,� Cª¥ ��� ¤§@ � � C � ¡ ¢�� GX@# � ¡0¤%C � C � @R? � ¡ ¢=¢O�q¢Ì� ¡0B�¡ �+� Cª¥ °x®Ä� E¿B � C �¦¢O¨ C � @? � ¡ ¢O¢O�M¢�� ¡qB=¡ �,� Cª¥ � ¶Ë@#¾q@ ¢È�½� E¿BO¤§@ �^� ¡ ¢O¢ @,¤ ������¢O�q¢ µúC G � ¾ � ¡0¤úJ�¡ ¢=£i�¦¢�¨ @ ¢ @#GD¡q¤�C �O�¦� ¶ �O¢=� C �¦�q¢È�¦��¢O� C º<¢O� ² ¢C � F�@ �+� E¬B � CD¡qFO¤§@ °çÉ� � E¿BO¤¦@ � ¤§¤ �=� C G^¡-C � ¾M@:@+»O¡0E¿BO¤¦@ ��� C � @ � @#G � @#G G � G � ¡0B=¡ �+� Cª¥ � ¶Ë¡ � C ���^º)º @,¥<F � ¡0G £ ² � C �i�M¢ ¤¦¥�´=¾M@ º @#¥ �:«Ê� G�¦¢�¨ @ ¢ @,G^¡0¤%¡ ¢�A£O£�¢<� E5F�@,G � ¶ º @,¥ �^¯�-X�o� @ ¢� C �¦�I¢O� ¤ �M¢O¨ @#G � ¤¦@#¡qG ² � ¡-C�C � @ � @,G � @#G G � G � ¡0B�¡ �+� Cª¥ � ¶ËC �O�¦��^� ¡ ¢O¢ @,¤ �¦�#°%êø¢ N#é<à-éOJ åË°Må6� ¾[ã¡ ��� ßëà<N+â ² G � CD@�¡�FOG � ¤¦¤ � ¡ ¢ C·B�¡0B�@,G�C � ¡-C �½�O� ² @ £¬�O� ² C �¬�+� E¬B � C @dC � @�? � ¡ ¢O¢O�M¢� ¡qB=¡ �,� Cª¥ � ¶ � @#¾q@#GD¡q¤ ¨ G^¡0B �=�·« ¡ ¢=£5�§¢x¨ @ ¢ @,G^¡0¤ ¨M� ¾M@Ä¡�¤ � ² @,G7F �M�O¢=£5�q¢ C � @d? � ¡ ¢=¢O�q¢¬� ¡0B�¡ �+� Cª¥ ¯l°�êø¢ B=¡0G C ���+� ¤¦¡qG� @ �½�=� ² � C � ¡-C�C � @�? � ¡ ¢O¢=�q¢)� ¡0B=¡ �+� Cª¥ � ¶7¡ � C �=�^º Cª¥<B�@ ² G � CD@,G ² � C � H º @#¥ �·����ä H:µ·¡ ¢)� GDG^¡-C �¦�q¢ ¡0¤ ¢<� ExF�@#G -�o�O��� B=¡0B�@,G � ¡ � BO¤�¡ ¥q@ £ ¡)B �§�M¢ @,@#G �¦¢O¨ G � ¤§@ �§¢9�+� E¬B � C @#G �D�+� @ ¢=� @x¤¦@#¡ £A�¦¢O¨ C � C � @ ¢O� C �§�M¢�� ¶ � @#E � µ £ @+´ ¢=� CD@BOG �q¨ GD¡qE¬E �¦¢O¨ ¡ ¢=£À� C ���+�M¢=� @# � @ ¢�� @ ���M¢À�,� E5F �§¢ ¡0C � G � ¡0¤ � BOC � E ��� ¡0C �¦�q¢�°å �JÇçæ=èÁé�è��JÇ)ê%ëWè�È z�Ë ?¼C �=£ ¥¿C � @ � @,G � @,GDG � G � ¡0B=¡ �+� Cª¥ � ¶U¡qG F � CDGD¡qG ¥ �^� ¡ ¢O¢ @,¤ � ¡ ¢�£u�½� GD¾q@#¥5C � @ ² � G º5� ¶ å�� ¾[ã¡ ���¡ ¢�£)� �=�,� @ �D�½� G �#°�o�O��� ² � ¤¦¤6CD@,GDE �¦¢ ¡0C @ �M� G £A���D�+�=�D�½�¦�q¢i� ¶�C � @¿? � ¡ ¢O¢O�q¢ F=¡ � @ £ C � @ � G ¥ °�ç�� E¿@ ¢ C �¦�q¢ @ £��§¢ C � @5´=G � C�¤¦@ � C � GD@qJ? � ¡ ¢O¢O�M¢�³ �¬� G �¦¨q�¦¢ ¡0¤�B=¡qB�@#GßÍN3LqL3â�¡ ¢�£ C � @ÀC @+»<CuF<¥ ®Ä� ¾q@#G¬¡ ¢=£ �o�=� Eu¡ � ß KJL â�¡qG @À@+» � @#¤§¤¦@ ¢ C �½�M� G � @ � ¶ � G¶ � G C � @#G�GD@#¡ £O�§¢O¨�°

î¿|�ì }�~�~��5~��d�x~�~��������#�����d�R�i���

? � ¡ ¢O¢O�M¢�³ � C � @ � GD¥qJ ² �O� ¤§@)BOG � ¾ ��£A�¦¢O¨ @,»A¡ � C5GD@ � � ¤§C � ¶ � G5C � @)GD¡0C @�¡0C ² �O���^�&�q¢ @ � ¡ ¢ �+� E¬E �O¢O��� ¡0C @ �M¢ ¡¢O�M�¦� ¥ �^� ¡ ¢O¢ @#¤1JU¡qG @ �=¢ ¶ � G C �O¢ ¡-C @#¤§¥ �O�¦¨q� ¤¦¥ ¢O�q¢ µ �,�q¢=� C G �=� C � ¾M@ ° ?AB�@ �+� ´ � ¡q¤§¤¦¥ÀC � @5C ² �Rº @,¥ �¦¢O¨ GD@ £A� @ ¢ C �,÷ C � @

K µ^N3H

Page 16: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

\,j�]^w#f0kzj�d ¡ ¢=£&fM\^]Dw3f-kzjVd ¶ �O¢=� C �§�M¢=� ¡qG @XC � C^¡0¤¦¤§¥ ¢O�q¢ µ �,�q¢=� C G �=� C � ¾M@ °�êø¢i� G £ @,G�C �R¨ @+C � � E¿@ � @ ¢=� @ � ¶ �=� ² C �Eu¡ º @�C � @ � @�GD@ � � ¤ÍC ���+�M¢=� C G �=� C � ¾M@qJ �q¢ @ � ¡ � C � @+»O¡0E �¦¢ @IC � @5@ ¢=�,�<£O�§¢O¨ ¶ �=¢=� C �§�M¢ ¡ ¢=£�� @#@ ² � ¡-C�B=G � B�@#G½C � @ �¡0F �q� C � CX¡qG @ ��� @,¶ � ¤ ° ? � ¡ ¢O¢O�M¢¢O� C ��� @ £ C � ¡0CX¡�G @ �½� ¤§C � ¶ Ý ¡qE¬E �¦¢O¨��¦¢=£ @#@ £È£A� @ �I�½� J�¡ ¢=£ C � ¡-C�C �O��� E¿¡ ¥F�@X¡ � C @#B �¦¢ Eu¡ º¼�¦¢O¨¬�O��� G @ �½� ¤§C � E � GD@ �+�q¢�� CDG �=� C � ¾q@ °7êø¢ G @,C G �M� B�@ � C � C � @,@#E � C �O��� ² ¡ ��� G ���+� ¡0¤ �§¢ Eu¡ º<�¦¢O¨? � ¡ ¢O¢O�M¢�³ � G @ �½� ¤ÍC �·�+�M¢=� C G �=� C � ¾M@ °��o�O�¦�Ä��� C � @�C � @ � G ¥ � ¶U@,GDG � G µ �,� GDG @ � C �¦¢O¨X�+�A£ @ � J<¡ �·�§¢O� C � ¡-CD@ £ F<¥xC � @ ² � G º� ¶ Ý ¡0E¿E �¦¢O¨ ß áMì-â °5Ý ¡0E¿E �§¢=¨ ¶ �A�+��� � @ £��q¢ C � @ � @,C � ¶ � C G �§¢O¨¼���¦¢ C � @ � Eu¡ ¨ @ � ¶ËC � @x@ ¢=�+�A£A�¦¢O¨ Eu¡0B�J�¡ ¢=£� ¡q¤§¤¦@ £ C � @,E Æ @,GDG � G µ �,� GDG @ � C �¦¢O¨R�,�<£ @ �DÇO°RÝ @ ��£ @ ¢ C � ´�@ £ C � @ £O�¦� CD¡ ¢=� @uBOG � B�@,G Cª¥�C � ¡-C ² �q� ¤ £ F�@ £ @ �½� G^¡0FO¤¦@¡0E �M¢O¨ C � @ �+�A£ @ � ¡ ¢=£¬�¦¢O� C � ¡-C @ £ ¡ � ¥ � CD@,Eu¡-C �¦�o� C �=£ ¥ °%± @ £ @#¾q@#¤ � B � � E¿@ ¢O� C^¡-C �§�M¢ C �X� C ��£ ¥:C � @ � @ ¢O� C �§�M¢=�#°

ÿoÐLÚdÐ½Ï ����ÒAÓ%Ò%�*�·Ô± @ �+�M¢=�½��£ @#G �+�A£ @ ��� ¾q@,G � � E¿@:¡q¤§B � ¡0F�@+C£Ýþ¡ ¢=£ GD@ � @,GD¾q@�C � @5¤§@,C½C @#G�"5C ��£ @ ¢O� C @XC � @ � ¡qG £A�¦¢ ¡q¤ � Cª¥ � ¶�Ý °�ê C���o� ¶zC @ ¢�� @,¤¦BA¶ � ¤6C � C �O�¦¢Oº)� ¶�Ý � } L2X,N��X¡ ¢=£ C � @ ¢ C � @ �+�A£ @ � ¡qG @�C @#G E¿@ £ F �§¢ ¡qG ¥ �+�A£ @ �#°± @ �+�q¢��½��£ @,GICDGD¡ ¢=� E ��� � �¦�q¢=�I� ¶ � @3 � @ ¢=� @ �I� ¶ §ý� ¥<E5F � ¤ � ¶ÊG � E Ý�¶ÊG � E � @ ¢�£ @,GXC � GD@ � @ � ¾q@#G °f� @ � ¡0¤¦¤�C � ¡0C¶ � G�C ² �)� CDG �¦¢O¨M� �ZX�¦6�wÝ ® J=C � @ Ý ¡0E¿E �§¢=¨)£A��� C^¡ ¢=� @:F�@+C ² @,@ ¢ �Ì¡ ¢=£ ¦�J £ @ ¢O� CD@ £�öÀ« ��X�¦ ¯ J ��� C � @ ¢<� E5F�@,G� ¶ �+�<� G £A�¦¢ ¡0C @ � ² � @,GD@J� £A�Íí @,G � ¶ÊG � E ¦ °Ä± @ ¢=� C @XC � ¡-C�C � @ Ý ¡0E¿E �§¢O¨)£A�¦� CD¡ ¢=� @ �����¦¢=£ @#@ £ ¡¿E¿@+C G ���0÷Ë�ú° @ ° JöÀ« ��XFí ¯ � öÀ« í X�� ¯Ù�4öÀ« �ZX�¦ ¯ � öÀ« ¦�XFí ¯ ¡ ¢�£�öÀ« ��X�¦ ¯ �üL � ¶�¡ ¢=£)�q¢ ¤§¥ � ¶��?�Ѧ °çÎ�+�A£ @ \ù�¦�5�½� E¿BO¤§¥Ì¡ �½� F � @,C � ¶�Ý ® ¶ � G � � E¿@¿B �M� � C � ¾M@ �¦¢ C @ ¨ @,G §�°R�o� @uE �¦¢O� E � E £A��� C^¡ ¢=� @ � ¶o¡ �,�<£ @\ J £ @ ¢=� C @ £µö)«ç\�¯ J ���:¨M� ¾M@ ¢ F¼¥ öÀ«D\�¯ � E �§¢ \ X ¾ ^�î X \�ï° ¾ }�öÀ« ��X�¦ ¯ � °À�o� @ Ý ¡0E¿E �¦¢O¨ C � @ � GD¥¶ �A�+��� � @ ���M¢C � @�C^¡ � º¿� ¶ �,�q¢=� C G �=� C �¦¢O¨)«�� G �½�=� ² �§¢O¨ C � @X@,» ��� C @ ¢�� @ � ¶ ¯��+�A£ @ � ² � C � ¤�¡0G ¨ @�E �¦¢O� E � E £O�¦� CD¡ ¢=� @X¡ ¢=£ ¤�¡0G ¨ @� ¡qG £O�§¢ ¡q¤ � Cª¥ °�o� @#G @�¡0GD@I¶ �q� Go¶ �=¢=£ ¡0E¿@ ¢ C^¡0¤�B�¡0G^¡0E¿@+CD@,G � ¡ � � �A�+� ¡-C @ £ ² � C � ¡ �+�A£ @ \¬÷

� ê C �:m,y§w#]gð�y§\,j�dq_zgA÷�§ J ² � @,GD@ \ â]Ý ® °� ê C �au\�ItI,e�dM\Xy¦\+jVd0_Êg<÷ +o�2¤ �q¨Oð � \ � °d«��7� Eu¡ º @ � @ ¢=� @ � ¶�C �O�¦� B=¡qGD¡qE¬@,C @#G#JMG @ � ¡0¤¦¤AC � ¡-C ² @�¡qG @�C �O�¦¢Oº<�§¢=¨� ¶6C � @ �+�A£ @�¡ � C � @ � Eu¡ ¨ @ � ¶%¡ ¢ @ ¢=�+�A£A�¦¢O¨ Eu¡0B ê ÷ Ý�ë W Ý ® ¡ ¢�£��¦¢ C �O���d� ¡ � @I¤ �M¨�ð � \ �#�ñ+ ��� C � @¤§@ ¢O¨ C �)� ¶7C � @�E¿@ �D� ¡ ¨ @ �#°ë¯� ê C �ua¬kzj=k¼a¬`{a�f0kOI^_øe-j�]^\�ò � ö)«ç\�¯l°� ê C �:e-y NOgOeMm^\+_�Ilk�á3\+÷ "J�c� Ýu� °

ê C ���Ä� ¶zC @ ¢R�+�=� C � Eu¡0GD¥5C �5�^� ¡0G^¡ � C @#G ��� @�¡ �,�A£ @�F<¥I© �=� CÄC � @�¶ �q� GÄB=¡0G^¡0E¿@,C @,G ��� C�¡ �^�O� @#¾q@ � ¡ ¢=£ G @,¶Ê@,GËC �5� �=�^�¡ �+�A£ @:¡ � ¡ ¢9«±§ X�+¨X ò<¯ ð µ �+�A£ @ °ÿoÐLÚdÐ1ÿ ó9Ö2�ËÓ�ÕÙô4�ËÓ�� Ûµ�ËÙ�Òw�oÕ��½Ô��õwÜ�Ø �·Ö{Ûêø¢ ¡ ¢<� C � � @#¤§¤�C � @�F=G � ¡ £u¨M� ¡0¤ � ¶ �+�A£A�¦¢O¨ C � @ � G ¥ � ¡ ¢ F�@ � C^¡-CD@ £R�¦¢À�q¢ @ � ¶6C � @�¶ �q� G ² ¡ ¥ � F�@,¤ � ² J ² � @,GD@ ² @´O»)C � GD@,@ � ¶%C � @X¶ �q� GdB=¡qGD¡qE¿@+C @#G � ¡ ¢=£ CDG ¥RC �u� BOC � E ��� @XC � @I¶ �q� G C �6°Ë�o� @ �+� G GD@ � C � BAC � E �T� ¡-C �¦�q¢�� ¡0GD@ ÷

� /I� ¾M@ ¢ +�X ò X�"5´ ¢=£ ¡ ¢9«±§ X�+�X ò<¯ ð �,�<£ @XC � ¡0C�E �¦¢O� E �T� @ ��§�°� /I� ¾M@ ¢�§ X ò X�"5´ ¢=£ ¡ ¢9«±§ X�+�X ò<¯ ð �+�A£ @XC � ¡-C�Eu¡0» � E �T� @ � + °� /I� ¾M@ ¢�§ X�+�Xt"�´ ¢=£ ¡ ¢9«E§ X�+�X ò¼¯ ð �+�A£ @XC � ¡-CdEu¡-» � E ��� @ ��ò=°� /I� ¾M@ ¢�§ X�+�X ò ´ ¢=£ ¡ ¢û«±§ X�+�X ò<¯ ð �,�<£ @XC � ¡0C�E �¦¢O� E �T� @ � " °

K µ^NaL

Page 17: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

�o� @�´=G � C·C � GD@,@ �^�=�q��� @ � ¡0GD@ � @,¤§¶zµú@,»<B=¤¦¡ ¢ ¡-C � GD¥ °%ê C ��� ¡q¤ ² ¡ ¥ �Ë£ @ � � GD¡qFO¤§@�C �¬� ¡ ¾q@�¡ � Eu¡0¤¦¤�FO¤ �A�^º ¤¦@ ¢O¨ C � J<¤�¡0G ¨ @E¿@ �D� ¡ ¨ @:¤¦@ ¢=¨ C � J�¡ ¢=£ ¤�¡0G ¨ @ £O�¦� CD¡ ¢=� @ °IÝ�� ² @#¾q@,G � C ����¢O� C � ��� E¿E¬@ £A� ¡-C @xC � ¡-C�E �¦¢O� E ���,�¦¢O¨ " ��� C � @xG �¦¨q� CC �=�§¢O¨ C �À£A��«Ê�¦¢ B�¡0G C ���+� ¤�¡0G3J ² @ £A�M¢�³ C � ¡ ¾M@:¡RE �q¢O� C �M¢O�¦�,� Cª¥ÀGD@ � � ¤ÍC ¯l°IÝ�� ² @,¾q@#G�@,E¿B � G �¦� ¡0¤¦¤§¥ « ¡ ¢=£ ¡0¤¦E �M� C� @#G½C^¡ �¦¢ ¤¦¥ ¯�� C � @,@#E � C � F�@�C � @ � ¡ � @IC � ¡-C �M¢ @ � ¡ ¢�¨ @+C ¨ @+C�¾-¡q¤ � @ �d� ¶%C � @:B=¡0G^¡0E¿@,C @,G � ¶ � G�¤¦¡qG ¨ @,Gd¾-¡0¤ � @ ��� ¶"u¡ ¢�£�¨ @+C C �¦¢O¨R¨M�¼�A£ B=¡qGD¡qE¿@+C @#G � ¶ � G � Eu¡0¤¦¤6¾-¡0¤ � @ ��� ¶�" ��� C � @ �^� ¡0¤¦¤§@ ¢O¨q�¦¢O¨ B=¡qG½C °�¸O� G C � @#G E � G @MJ=F �O� ¤ £A�§¢=¨�+�A£ @ � ² � C � ¤¦¡qG ¨ @"�¡ ¢=£ C � @ ¢ C GD¥ �¦¢O¨ C � GD@ £O�=� @�" ��� ¡�¾q@#G ¥ � ¤¦@,¾M@,G ² ¡ ¥ � ¶ ¨ @,C½C �¦¢O¨x¨q�<�A£u�+�A£ @ �#° ? � ² @ ² � ¤§¤º @#@,B)C �O��� ¾M@,G �½�¦�q¢)�§¢ E �§¢�£ @,»ABO¤ ���+� C ¤¦¥ °

ÿoÐLÚdÐLÚ Ü�ÖOÖ2�ËÖ,Òw�ËÖOÖOØ6Ú�Ò%� ÔöÒw�oÕ�Ø6Û

±Þ� ¥�¡0GD@ ² @ �¦¢ CD@,GD@ � C @ £�¦¢9�,�A£ @ �I� ¶�¤¦¡qG ¨ @xE �¦¢O� E � E £A�¦� CD¡ ¢=� @ ã ê CXEu¡ ¥F�@ ² � G½C ���M� G ² �O� ¤¦@¿C � GD@,¾ ���½� CÝ ¡qE¿E �¦¢O¨�³ � B=¡0B�@,GX¡ ¢=£i� @,@ ² � ¡-C � @ � ¡ £ C ��� ¡ ¥�¡0F �q� C�C �O���,°�Ý ¡0E¿E �¦¢O¨ ¡ � C � ¡q¤§¤¦¥ £ @+´ ¢ @ £ C � G @#@5GD@,¤�¡-CD@ £BOG � B�@,G C � @ �o� ¶%¡ �+�A£ @ \¬°

N °��o� @XE �¦¢O� E � E £A��� C^¡ ¢=� @ � ¶ \ J ² �O�¦�^� ² @ � ¡ ¾q@�¡0¤¦GD@#¡ £ ¥ � @#@ ¢�°K °��o� @X@,GDG � G £ @,C @ � C �¦�q¢�� ¡qB=¡ �,� Cª¥ � ¶ \¬÷Ëç��,�<£ @ \É�¦��� µ @,GDG � G £ @,C @ � C �¦¢O¨u� ¶ �O¢�£ @,GoC � @�BOG � E �¦� @�C � ¡0C ¢=�

E � G @¬C � ¡ ¢Y� @#G G � G �I�<�#�+� G £O� G �¦¢O¨ C G^¡ ¢�� E ��� � �§�M¢ J � C �¦� ¡0¤ ² ¡ ¥ � B �¼� � � FO¤§@¿C �i£ @+CD@ � C ² � @+C � @,G�@#G G � G �� ¡ ¾q@ �A�,�+� G @ £�� G ¢=� C#J%¡ ¢=£f�R��� C � @u¤¦¡qG ¨ @ � C �¦¢ C @ ¨ @,G ² � C � C �=�¦� B=G � B�@#G½Cª¥ °¬Ý ¡0E¿E �§¢O¨i¢=� C @ � C � ¡0C:¡� µ @,GDG � G �+� GDGD@ � C �§¢=¨x�+�A£ @ � ¡ � E �§¢=� E � E £A��� CD¡ ¢�� @ � � N °

æ °��o� @�@,GDG � G �+� G GD@ � C �¦�q¢u� ¡qB=¡ �,� Cª¥ � ¶ \¬÷�çü�+�A£ @ \��¦�³µú@#G G � G �,� GDG @ � C �¦¢O¨X� ¶ �O¢=£ @#GËC � @�BOG � E ��� @oC � ¡-C ¢=�

E � G @·C � ¡ ¢³@,GDG � G �6�<�#�+� G £A� G �¦¢O¨ CDGD¡ ¢=� E ���D�½�¦�q¢ J � C �¦� ¡q¤ ² ¡ ¥ � B �M�D�½� FO¤¦@·C �I£ @,C @#G E �¦¢ @ ² �O�¦�^� ¤ �A� ¡-C �¦�q¢��

¡0GD@ �§¢ @,GDG � G «Ê�¦¢ ¶ � G Eu¡-C �§�M¢ µúC � @ � GD@+C ��� ¡q¤§¤¦¥qJMF � C ¢O� C ¢ @ � @ �D� ¡qG � ¤¦¥x@ ¹u�,� @ ¢ C ¤¦¥ ¯ ¡ ¢�£R�+� G GD@ � CËC � @#E�J<¡ ¢=£R� ¶³�¦� C � @x¤¦¡qG ¨ @ � C �¦¢ CD@ ¨ @,G ² � C � C �O��� BOG � B�@#G½Cª¥ °�Ý ¡qE¿E �¦¢O¨)¢O� CD@ � C � ¡0CI¡

³µ @,GDG � G �+� G GD@ � C �¦¢O¨��,�<£ @ � ¡ �

E �¦¢O� E � E £A��� C^¡ ¢=� @�K³ � N � G�K

³ �sK °

�o�<�=� C � @RE �§¢=� E � E £O�¦� CD¡ ¢=� @ � ¶d¡ �,�A£ @ �¦�x£A� G @ � C ¤¦¥�GD@,¤¦@,¾-¡ ¢ C�C � C � @RCD¡ � º�� ¶ �,� GDG @ � C �§¢O¨ @#G G � G � ¡ ¢=£ ² @² � ¤§¤�¶ �A�+�=�¿�M¢ C �O�¦� B=¡qGD¡qE¿@+C @#G5¶ � G ¢O� ² °&å ¡0C @,G «Ê�¦¢ C � @ � @ �+�M¢=£ B=¡qG½C � ¶�C � @ �+�M� G � @ ¯ ² @ ² � ¤§¤�C � G ¢ý�q� G¡-C C @ ¢ C �§�M¢ C � C � @5 � @ � C �¦�q¢ µ �=� ² � ¡ ¢ ² @�E¿¡ º @XC � @ � @�@,GDG � G½µ £ @,C @ � C �¦�q¢ ¡ ¢=£ @#G G � G µ �,� GDG @ � C �§�M¢�� ¡qB=¡0F � ¤ � C � @ �¡0¤ ¨q� G � C � E ���0°

ÿoÐLÚdÐ�÷ Ñ�����Ø�Û��������ªØþÚ��oÕ�Ø6Û

�o� @�¶�¡0E¿@ £)Ý ¡qE¬E �¦¢O¨¿�+�A£ @ � ¡0GD@ �,�A£ @ ��� ¶7E �¦¢O� E � E £O�¦� CD¡ ¢=� @�C � GD@,@ °�­ ¾q@ ¢ C �=�q�O¨M�)Ý ¡qE¿E �¦¢O¨�³ �Ä¢ ¡0E¿@ �¦�¡ �D� �<�,� ¡0C @ £ ² � C ��£A��� C^¡ ¢=� @+µ æ �+�A£ @ � J � @¬¡0¤ �½�R¨ ¡ ¾q@MJ �¦¢ C � @ � ¡0E¿@5B=¡qB�@#G °I�+�A£ @ ��� ¶ £O�¦� CD¡ ¢=� @5C ² � ¡ ¢=£ ¶ �M� G -å @,C �=�d� CD¡0G Cd@,¾M@ ¢�� ¤ � ² @#Gd¡ ¢=£�£ @ � � G � F�@IC � @ £A��� C^¡ ¢=� @ �M¢ @ �+�A£ @ � ´=G � C -

� ò � N ÷Ä�o�O������� C G � ¾ � ¡0¤ °dç ¤¦¤ ² @ ² ¡ ¢ C �¦� C � ¡0C�C � @:@ ¢=�,�A£A�§¢=¨ ¶ �O¢=� C �§�M¢ F�@ �§¢ ©ª@ � C � ¾M@ ° ? � C � @ ��£ @ ¢ C � Cª¥¶ �O¢=� C �§�M¢ ² � G ºA� ¡ ¢=£)¨q� ¾q@ � C � @�F�@ � C�B �M�D�½� FO¤¦@ «E§ X § X#N ¯ ð �,�<£ @ °� ò �üKOJ �o�O���d�¦� ¡q¤§GD@#¡ £ ¥ �¦¢ C @,GD@ � C �¦¢O¨�°�ç�� � E¬B=¤§@ ² ¡ ¥¿C � ¡ �^�O� @#¾q@ £A��� C^¡ ¢=� @5K ��� C � ¡qBOB�@ ¢=£ C � @�B=¡0G � Cª¥� ¶·¡0¤¦¤%C � @¬E¿@ �D� ¡ ¨ @xF � C � C � E¬@ � � ¡ ¨ @5¡ ¢�£ C �<�=�I¨ @+CI¡ �+�A£ @ ² � C � § �ø+Q�þNqJ �ú° @ ° J�¡ ¢s«E§ X § ! N@XDK ¯ >�+�A£ @ °�¸O� G ¨ @ ¢ @#GD¡q¤2"<J �M¢ @ ��£ @ ¢ C � ´=@ � Ý ² � C �1l ð JqC � @�¡ £O£A� C � ¾q@ ¨ G �M� B � ¶ �¦¢ CD@ ¨ @,G � E �A£A� ¤ � "X¡ ¢=£¿�=� @ �«Ê�¦¢=� CD@#¡ £R� ¶6C � @XB=¡qG � Cª¥ �^� @ �^º F � C ¯ C � @ �^� @ �^ºR� ¥¼ExF � ¤=C � ¡-C ��� C � @ � � E � ¶7¡q¤§¤�E¿@ �D� ¡ ¨ @ � ¥<ExF � ¤ ��� ¾q@#Gl ð °Ë�o�O���o¨q� ¾q@ � J<¶ � Gd@,¾q@#G ¥="<J�¡ «E§ X § !sN@XDK ¯ ð �+�A£ @ °� ò � æ J ¢O�q¢ µ1CDG � ¾ � ¡q¤ �¦¢ C @#G @ � C �§¢O¨u� ¡ � @ °

K µ^N à

Page 18: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

êø¢ C @#G B � ¤�¡-C �§¢O¨ ¶ÊG � E C � @�´=G � C�C ² � @,»A¡qE¿BO¤§@ � J �q¢ @�E¿¡ ¥ �+�M¢ ©ª@ � C � GD@dC � ¡-CÄ¡ «E§ X § ! ò �9N@X ò<¯ ð �+�A£ @ ��� ¡q¤ ² ¡ ¥ �B �M�D�½� FO¤¦@ °��o�O��� C � G ¢=�o�q� C ¢O� CÄC � F�@�C � @ � ¡ � @X¡ ¢�£R�¦¢ ¶�¡ � C ò � æ ¡0¤¦GD@#¡ £ ¥ ¨M� ¾M@ � ¡ �,�q�O¢ CD@,GD@+»O¡0E¿BO¤¦@�C � C �O�¦��+�M¢ ©ª@ � C � GD@ °iÝ ¡0E¿E �§¢O¨È¨ ¡ ¾M@ �,�A£ @ � ¶ � G�C �O�¦�¬� ¡ � @R¡ ¢=£ BOG � ¾q@ £ C � @ � G � BAC � Eu¡0¤ � Cª¥ °i± @ ² � ¤¦¤ £ @ �D� G � F�@uC � @�+�A£ @ �o�§¢ C � @ ¢ @+»<C�¤¦@ � C � GD@ °

K µ^N#ì

Page 19: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

������������������ ��!#"%$&��')(+*�!,�-��.%/%'0!#�1��*2!3�&45�6.7�1*7�98:"%;<�=� > ?<@#BAC @#E5F�@,G:N KAJOK0LMLONPRQ%SUT�VXWOQ´ùñúÄT=QTû>ú[üHýñþFÿoQ���W��

[6\^],_1`AaD\+a,bdceMf#gA`ih�`=fMe-j hU]+alk�m^\3b�ceMf#gA`ih�`=fMe-j

�o� @ � @ ¢=� C @ ��£ @ � � G � F�@ �½� E¿@iF=¡ � �¦� ¡0¤ ¨ @,F=GD¡ �¦��� C G �=� C � G @ � C � ¡-C ² @ ² � ¤§¤I@ ¢��+�q�=¢ CD@,G £O� G �¦¢O¨ C �O�����+�M� G � @MJ�¦¢=� ¤ �=£A�¦¢O¨=÷

� ¸%�§¢=� CD@�´=@,¤ £O�o� ¶�¡q¤§¤ � �T� @ ��« ¡ ¢=£�� � ¡0B�@ �^¯l°� «�ä�¢O� ¾ ¡qG � ¡-CD@:¡ ¢=£ E � ¤ÍC � ¾-¡0G � ¡-C @ ¯ B � ¤§¥ ¢O� E � ¡0¤ �o� ¾q@#G�´ ¢O� C @X´=@#¤ £O���§¢��q¢ @ � GoE � G @X¾-¡0G � ¡0FO¤¦@ �#°� ��@ � C � G � B=¡ � @ �o� ¾q@,G�´ ¢=� CD@X´=@,¤ £O�:«�� G å��¦¢ @3¡0Gd¡0¤ ¨ @#FOGD¡ ¯l°

ä�¢ ¶ � G C �O¢ ¡0C @#¤§¥MJ#C � @,GD@ ����¢O��� � E¬B=¤§@ � G £ @,G �¦¢ ² �O���^���q¢ @ � ¡ ¢ BOGD@ � @ ¢ C7¡q¤§¤qC � @ � @ � FA©ª@ � C � · C � @ � G7BOGD@ � @ ¢ CD¡0C �¦�q¢���X�§¢ C @#G ¤¦@#¡ ¾M@ £ ¶ � G:@ � � @ ¢ C � ¡0¤�GD@#¡ �½�M¢=�,°¿ö�� ¤¦¥ ¢O� E � ¡0¤ � ¡0GD@5Cª¥<B ��� ¡q¤§¤¦¥ £ @,´ ¢ @ £ ² � C �&�,� @ ¹R�+� @ ¢ C � ¶ÊG � E×´�@,¤ £O�,°¸%� @#¤ £=� ¡qG @ �,�q¢=� C G �=� C @ £ F<¥ �+�M¢=� CDG ��� C �¦¢O¨ B � ¤¦¥ ¢O� E � ¡0¤�G �¦¢O¨M� ¡ ¢=£ C � @ ¢ G @ £A�=�,�§¢O¨ C � @#E�E �A£A� ¤ �5� GDG @ £A�=�+� FO¤¦@B � ¤¦¥ ¢=� E � ¡q¤ �#°Rå��¦¢ @3¡0G:¡0¤ ¨ @#FOG^¡ ¢ @#@ £O� C � F�@uF=¡ � @ £Ì�q¢ ´=@#¤ £=�,° è � C � C5¡0¤ � � B=G � ¾ ��£ @ ���,�q¢ ¾q@ ¢O� @ ¢ C ² ¡ ¥ �I� ¶¤ �¼�Mº<�§¢O¨ ¡-CI´=@,¤ £O�#°:± @ ² � ¤¦¤7CDG ¥�C �À£ @ �D� G � F�@¬¡q¤§¤%C � @ � @ �,�q¢O¢ @ � C �§�M¢=� F�@#¤ � ² °:Á�M� C ¤¦¥ ² @¿¡0GD@ �¦¢ C @,GD@ � C @ £�¦¢�+� E¿B � CD¡0C �¦�q¢ ¡q¤7¡ ¢=£�+� E5F �¦¢ ¡0C � G � ¡0¤ �,�q¢=� @# � @ ¢=� @ �,°�± @ ² �q� ¤ £ ¤ �¦º @�C �)� @,@ �=� ² C � GD@,BOGD@ � @ ¢ Cd´=@#¤ £=��� � ¡ �C � B�@,G ¶ � GDEÎ@,¤¦@,E¿@ ¢ C^¡0GD¥REu¡ ¢O� B � ¤�¡-C �§�M¢=� @ ¹R�+� @ ¢ C ¤¦¥ °�± @ ² �M� ¤ £ ¡q¤ � � ¤ �¦º @IC �¿º<¢O� ² � ¶ � � E¿@ �+� E¬B � CD¡0C �¦�q¢ ¡q¤BOG � FO¤¦@,E � ¶ÊG � E�¤ �¦¢ @#¡qGÀ¡q¤ ¨ @,FOG^¡ � ¡ ¢ F�@ � � ¤¦¾q@ £ @ ¹R�+� @ ¢ C ¤¦¥ °�± @9¡0GD@�¡q¤ � �&�¦¢ CD@,GD@ � C @ £Þ�§¢��+� E5F �¦¢ ¡-C � G � ¡q¤Â � @ � C �¦�q¢��d�½�=�^� ¡ �#÷�Ý�� ² � ¶zC @ ¢i� ¡ ¢ ¡¬B � ¤§¥ ¢O� E � ¡q¤�@#¾-¡0¤ � ¡-CD@�C �o� @#G � ã Ý�� ² £A� @ �o�q¢ @XBOG � ¾q@�C � ¡0CdC �O���d� ¡ ¢¢O� C � ¡0BOB�@ ¢ C �<�u� ¶zC @ ¢ ã �o� @ ¢O� C @ � F�@,¤ � ² B=G @ � @ ¢ C�¡ ¢=� ² @,G � C �u� �=�^�  � @ � C �¦�q¢=�#°

î¿|�� � �:�,� �i����i�l���,�x�

? �¦¢=� @ ² @¡0GD@ �§¢ CD@,GD@ � C @ £s�¦¢ B � ¤¦¥ ¢O� E � ¡0¤ �¿� ¾q@#G¿´=@,¤ £O� J � C ² �M� ¤ £ F�@ ¢O��� @�C �ûº¼¢=� ² C � @F=¡ � ��� ¡q¤ ¨ @,FOG^¡ ���� C G �=� C � G @ � ² �O���^�À�=¢O� ¶Ê¥)F � C � ´=@#¤ £=� ¡ ¢=£ B � ¤¦¥ ¢=� E � ¡q¤ �#°Ä®Ä� E¿E � CD¡0C � ¾q@XG �¦¢O¨¼� ¡0GD@ � �=�^�i� C G �=� C � G @ � ¡ ¢=£ ² @£ @,´ ¢ @XC � @,EùF�@,¤ � ² °

A ;@B�*%�Ê!#�1��*]m��Om� 4x��$&$Ì/6!S¡A!#�&}�; ���1*7�yåQ¡=*7. Ú �1;¼�1.�å���� �+� E¿E � C^¡-C � ¾q@þG �¦¢O¨ZkOI d0k¼b-\,j×m,p�e _úalk N�y§\« «fX��QXi� ¯gK Y gO\,a \ « kOI�e-j e0a,m+kz_úa e-alpwI,\,_5]Dw0j=_øe-kzj�kzj�d9_ Y w I�NO\^],k�e-y�\+y¦\�au\+j�_EI L e-j�f N e0j�f �QXi� e0a \uh^`Aj�]i�_úk�w-j%IJauetN@N�kzj�d « ¤ « _øw « I+e0_1kOI±h^p-kzjVd�_ÊgO\qh+w-yzy¦w Y kzj�d�N�a wtN=\,al_1k�\�I�h+w-a5\ib \,alpR_úalk N�y§\Zp X q X è �]« b

�×åSå#��'M�E¡A!3��}���!D>4��� w0_zg � e0j�f � e-a \�e�IgI+w3],k�e-_úk¼b \�K7kERz\SRTK)p � « q � è,¯ � «&p � q ¯ � è�e-j�f�p � « q � è,¯ � «&p � q ¯ � è#R45��$&$Ì/6!S¡A!#�&}��Ê!^>�� w0_zg � e-j�f � e-a \¬]^w�afax`A_øe-_úk¼b \�K·kERz\SRTKTp � q � q � pûe-j�f�p � q � q � p¨RA �Lå,!#� �E¢%/7!#�&}��Ê!^>4��� f-kOIl_úalk�m+`A_ø\�I:w�b \,a � KËkERz\SRTKTp � « q � è,¯ � p � q � p � è@R(+.7;<*�!3�Ê!#�1;Vå�� p � L�� pûe-j�f:p �MN�� p¨R��.%.7��!#��}�;i(+*~}�;¼��å3;�åy��n w0a�\�b-\,alp�p �ø« Kx_ÊgO\,a \Ì\�sMkOIl_EI�e0jþeqfMf-kz_úk¼b \Ìkzj b \,agI,\ ! p ��« Il`=]^g2_ÊgOe-_p � « ! p<¯ � L R

ï±h�kzjeqfMf-kz_úk�w-j%KÄ\ib-\+alp¿j�w0j2�Dá3\,a w¿\+y§\iau\+j�_7gOe�I�efax`AyÍ_1k N�y k�]^e-_úk¼b \:kzj2b-\+agI,\�K�_ÊgO\,j « kOIXe ´=@#¤ £�R��±ï�Rz\�RTK%h+w-a�\ib \,alpp �ª«]! } L{� K�_ÊgO\,a \x\tsMkOIl_EI:e-j]p � (���« Il`=]^g�_ÊgOe-_ p � p � (� N R Å�� CD@ �d�M¢Àç ¤ ¨ @,FOG^¡-µ^N#é

Page 20: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

à ¶zC @ ¢ ² @ ² � ¤¦¤ �½º<� BC � @ � B�@,G^¡-C � G � �Ρ ¢=£ ��¡ ¢=£�� � E¿BO¤¦¥GD@+¶Ê@#G�C � C � @ � @,C7«Î¡ � C � @¿G �§¢O¨9« ² � C � ¡ £=£A� C �§�M¢¡ ¢�£ E � ¤§C � BO¤ �¦� ¡-C �¦�q¢ F�@ �¦¢O¨R� B�@ �+� ´=@ £� E¿BO¤ �¦�,� CD¤§¥ ¯+°�®Ä� E¿E � C^¡-C � ¾q@�G �¦¢O¨M� ¶ � G EùC � @5¶ �q�O¢�£ ¡-C �§�M¢ ¶ � G�E �=�^��� ¶C � @¬@#¤§@ ¨ ¡ ¢ CIG @ �½� ¤ÍC ��� ¶Ä¡0¤ ¨ @#FOG^¡�¡ ¢�£ ¡0¤ ¨ @#FOG^¡ ���:¨ @ � E¿@+CDG ¥ °�±Þ� C �O�¦¢ C � @ � ¤�¡ �D��� ¶ �+� E¬E � CD¡0C � ¾q@¬G �¦¢O¨¼� J �q¢ @� ¡ ¢u¨ @,C ¢O��� @#GÄ¡ ¢�£u¢O��� @,G £A� Eu¡ �§¢=��« G �§¢=¨M� ² � C �)¢O��� @,G�¡ ¢=£R¢O�¦� @,GÄBOG � B�@#G½C � @ �D¯ ¡ ¢=£ C �O���Ä�,� ¤§E �¦¢ ¡-CD@ � ² � C � C � @¢O� C �¦�q¢�� ¶�¡x´=@,¤ £U°·êø¢ ¶ � GDE¿¡q¤§¤¦¥qJAG �¦¢O¨M� ¡q¤§¤ � ² C � @ � B�@,G^¡-C �§�M¢=�o� ¶�¡ £=£A� C �§�M¢ J � � FACDGD¡ � C �¦�q¢ ¡ ¢�£ E � ¤§C � BO¤ ��� ¡0C �¦�q¢ J² �O� ¤§@:¡x´=@#¤ £ ¡q¤ � � ¡0¤¦¤ � ² �d£A� ¾ �¦� �¦�q¢�°�± @ ² � ¤¦¤ � @,@ � � E¿@ � ¶%C � @ �¦¢ C @#G E¿@ £O� ¡0C @ ¢O� C �§�M¢=� ¤�¡-CD@,G °G�d�§¨M� C ¢=� ²ü² @C � G ¢ C � B � ¤¦¥ ¢O� E � ¡0¤ �,°

î¿|�� ���x�+õ)���xñ �+�:�ý~Ë�,���x�

/I� ¾q@ ¢ ¡ ¢ ¥G �¦¢O¨ «¬J%¡ ¢=£ ¡ � ¥<E5F � ¤³«Ê�=� � ¡q¤§¤¦¥GD@+¶Ê@,GDGD@ £ C � ¡ � ¡ ¢Ì�¦¢=£ @+CD@,GDE �§¢ ¡0C @MJ �q¢ @ � ¡ ¢Ì� GD@#¡-CD@u¡)G �¦¢O¨«¿ß

³â � ¶�B � ¤§¥ ¢O� E � ¡q¤ �o� ¾M@,G�« ° ? ���^� ¡¿G �¦¢O¨u�§¢=� @,G � C � E �M� C � ¶%C � @ ¢O�¦� @�BOG � B�@,G C � @ �d� ¶7C � @ �O¢=£ @,GD¤§¥ �¦¢O¨ G �¦¢O¨�°

è�@,¤ � ² ��� ¡x¶ � GDE¿¡q¤ £ @+´ ¢O� C �§�M¢�� ¶%C � @�G �§¢=¨¬� ¶7B � ¤¦¥ ¢O� E � ¡0¤ �,°A ;@B�*%�Ê!#�1��*]m���æ �ok¼b \,j�eþ]Dw�aQa¬`A_øe-_úk¼b \ alkzj�d « e0j�fÞkzj�fq\,_ \,a�a¬kzj�e-_ø\

³ K�_ÊgO\µI,\+_ «¬ß³â gOe�I e�IÌkz_LI \+y§\i�au\+j�_EIGHËj�kz_ \$I,\��+`=\,j�]^\�I:w�h « K Y kz_Êgi_ÊgO\�I,\��+`=\,j�]^\ w ��� w ) Xi&i&�& X w���� m^\,kzj�d)kzj=_ø\+a�N�a \,_ \^fÀe�I:_ÊgO\Ùh+w-a�aue-y�Il`{a[ � � ° ) w � ³ � R � fqf0kz_1k�w0je-j�fQa¬`Ay _úk N�y k�]^e-_úk�w-j�w�b \,a «¬ß

³â e-a \�fM\EH·j�\^f¿eq]^]^w-a f0kzj�dqy p�KËkERz\SRTK�k h w ��� w ) Xi&�&i& X w���� e-j�f� ��� � ) X�&i&�& X � ë � Y kz_Êg! U� + _ÊgO\,j w � � ��� w ) � � ) X�&i&i&ZX w�� � � � X � � !�( X�&i&�& X � ë � e0j�f w � � ���#" ) X�&i&i&¨X$" � !ZëY gO\,a \ " � � [ �% ° ) w % � �±� % R n w0a¬e�N=w-y p-j�w�a¬k�e-y w �f«¿ß³â KGd0k¼b-\,j m+p w � ['&� ° ) w � ³ � K Y \ufq\LHËj�\¿kz_LI�£ @ ¨ G @#@ K

fq\,j�w0_ \^f5£ @ ¨�« w ¯:_ w)mD\:_zg=\:y¦e-aLd¼\�Il_�kzj�fM\�srò���Il`=]^gÀ_ÊgOe-_ w & ª kOI�j�w-j2�Dá3\,a w#R' �-�21Ä� å3�Ê!3����*4m��Tõ|n w-a5\ib \,alp�]^w�afax`A_øe-_úk¼b \5alkzj�d « e-j�fukzj�fM\+_ø\,a�axkzj�e-_ø\

³ K «¿ß³â kOI5e�]^w�aQa¬`A_ e0_1k¼b-\5alkzj�d�R

�o� @�E �M� C ¢ ¡-C � G^¡0¤UG �§¢O¨¿� ¶%B � ¤¦¥ ¢O� E � ¡0¤ � C � ¡0C ² @ ² � ¤§¤�@ ¢=�+�M�O¢ C @#G�¡0GD@�C � @�G �¦¢O¨¿� ¶�B � ¤¦¥ ¢=� E � ¡q¤ �o� ¾M@,G � � E¿@« ´ ¢O� CD@ ¯ ´=@,¤ £)( J � ¡ ¥ ( ß �Oâ °iÅ�� ²�² @ � ¡ ¢ ¡ £ © �q�¦¢ ¡ ¢ @ ² �¦¢=£ @,C @,GDE �§¢ ¡-C @צC � C �O��� G �§¢=¨ C � ¡ ¢O� C � @,G:G �¦¢O¨( ß �Oâøß ¦¼â °È± @ ² � ¤¦¤ �=� @RC � @ ¢O� C^¡-C �¦�q¢*( ß ��X�¦¼âÄC �È£ @ ¢O� CD@ � �=�^� ¡�G �¦¢O¨ ² �O�¼� @)@,¤¦@,E¿@ ¢ C � ¡qG @ � � E¬B=¤§¥ûB � ¤¦¥¼µ¢O� E � ¡0¤ �X�¦¢ C ² � ¾-¡qG � ¡0FO¤¦@ � �&¡ ¢=£ ¦ °¿êø¢ B=¡0G C ���+� ¤�¡0G ( ß ¦¼â ß �Oâq� ( ß �Oâøß ¦¼âq� ( ß �ZX�¦¼â °�®Ä�q¢ C �¦¢<�O�§¢=¨ C �O��� ² ¡ ¥MJ¡ £ © �q�¦¢O�§¢=¨ -ξ-¡qG � ¡0FO¤¦@ � � ( X�&i&i&¨X�� V C ��( ¶ � G � � E¿@ �§¢ CD@ ¨ @#G4-ÈJ ² @ ¨ @,C�C � @ � B=¡ � @ � ¶*-)µú¾-¡qG � ¡-CD@ÄB � ¤¦¥ ¢O� E � ¡0¤ �( ß � ( Xi&i&�&¨X�� V â °�ê C �¦� ¡q¤ � � B �¼� � � F=¤§@IC �u£ @,´ ¢ @XC �O�¦� G �¦¢O¨u£A� GD@ � C ¤¦¥�¡ ¢�£ ² @ £A�u�½�¬�§¢�� G £ @#G�C �u£ @+´ ¢ @X¾ ¡qG �¦�q���¢O� C �¦�q¢=�o� ¶ £ @ ¨ GD@,@X¡ �D�½�A�,� ¡0C @ £ ² � C ��� C °A ;@B�*%�Ê!#�1��*]m��Oÿ� � /7��!#��}%¡O� �L¡A!#;P1Ä����>�*7��$&�E¡=���-��*%� å�� �ok¼b-\+j e alkzj�d « e0j�f kzj�fM\+_ø\+a�a¬kzj�e0_ \�I� ( Xi&�&i&¨X�� V _zg=\ - �9b e0alk�e-_ø\�N=w-yÍp-j�w�a¬k�e-yÀalkzj�d�w�b-\,a « K fM\+j�w-_ø\Df «¿ß � ( X�&i&i&ZX�� V â g=e�Iþe�I2kz_LI \+y§\iau\+j�_EIHËj�kz_ \¥I,\��,`=\,j�]^\�I�kzj�fM\�s<\^f m,p�ò �ø_1`SN�y§\Èw�h�j�w0j2�øj�\<d¼e-_úk¼b \�kzj=_ø\<dM\,agI w �+� w �-, X/././.MX �10 � )32��5432 & 4 R�e�g=\Ì\,y§\ia¿\,j=_a \9N�a \�I,\+j�_EI�_ÊgO\Ùh+w-a�aue-yUIl`{a¸[ �-, X/././.%X �60 w �7, X/././.%X �60 � � ,( �i���*� �60V R � fqf0kz_1k�w0jûe0j�f×ax`AyÍ_1k N�y k�]^e-_úk�w-j e-aD\5kzj�_ \,a�N�aD\+_ø\^fetN@N�a wgN�alk�e0_ \,y p#Rçe�gO\ � % µ £ @ ¨ GD@,@ w�h w KXfM\+j�w-_ø\^f�£ @ ¨ \ 4 « w ¯�K�kOIR_ÊgO\)y§e0aLdM\�Il_Xkzj�fq\tsªò��% I^`=]^g&_zg=e-_X_zg=\+aD\)\tsMkOI^_kzj�f0k�]^\�I � ( X�&i&i&¨X�� V Il`=]DgÌ_ÊgOe0_ w �-, X/././.MX �54 · , X & 4 X �14#89, X/././.MX �60 kOI¿j�w0j2�Dá3\,a w#R e�g=\ C � CD¡q¤ £ @ ¨ G @#@ w*h w kOI¬_ÊgO\Ry§e-aLd¼\�I^_Il`{a [ V% ° ( � % KÄe�auw-jVd)_1`SN�y§\�I � ( X�&i&i&ZX�� V h+w0a Y g<k�]^g w �7, ./././.:. �10 kOI�j�w0j2�Dá3\,a w#R± @ ² � ¤¦¤ �+� E¿@dF=¡ �^º C � E � ¤§C � ¾-¡0G � ¡0C @�B � ¤¦¥ ¢O� E � ¡0¤ � ¤�¡-C @#G °/�d�¦¨q� C ¢O� ²2² @dE � ¾q@ �q¢ C �5£ @ � � G � BAC �¦�q¢���� ¶�´=@#¤ £O�¡ ¢�£ C �O�¦� ² � ¤¦¤ ¢ @#@ £À�O¢O� ¾-¡0G � ¡0C @XB � ¤§¥ ¢O� E � ¡q¤ �#°

î¿|$; < �#�i�^�%�=< �+���,�i�

¸%� @#¤ £=� ¡qG @�C � @ ¢O��� @ � C � ¶I¡0¤ ¨ @,F=GD¡ �¦�)� CDG �=� C � GD@ �#° C � ¡0CR¡0¤¦¤ � ² ¡q¤§¤ � � G C �x� ¶�Eu¡ ¢=� B � ¤¦¡0C �¦�q¢=� @ ¹R�+� @ ¢ CD¤§¥ °&êø¢B=¡qG½C �¦�,� ¤¦¡qG ² @ � ¡ ¢¬¢O� C �M¢ ¤§¥ £ @+´ ¢ @�¡ £O£A� C �¦�q¢ ¡ ¢=£ E � ¤§C � BO¤ ��� ¡0C �¦�q¢ JMF � CÄ¡q¤ � �X�½� FOC G^¡ � C �§�M¢À«Dp ! q � p � « ! q ¯ ¯

Å�� CD@ �d�M¢Àç ¤ ¨ @,FOG^¡-µªK0L

Page 21: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

¡ ¢�£u£A� ¾ ���½�¦�q¢i«Dp{� q � p � q �¨( ¯l°��o� @�E �¼� C˶�¡qE � ¤ � ¡qGË@+»O¡qE¬B=¤§@ ��� ¶�´=@#¤ £O� ¡0GD@oC � @�´=@,¤ £¿� ¶UG^¡-C �¦�q¢ ¡0¤ ¢<� ExF�@#G �o¡ ¢�£ C � @X´=@#¤ £À� ¶�GD@#¡0¤ ¢<� ExF�@#G �nÄ°I¸O� G �q� GdB � G B �M� @ � ´=@#¤ £=� C � ¡0C � ¡ ¾q@ �M¢ ¤§¥À¡x´ ¢O� C @ ¢<� ExF�@#G � ¶�@,¤¦@,E¿@ ¢ C �¡0GD@XE �=�^� E � GD@ � E¿B � G CD¡ ¢ C °��o� @X¶ � ¤¦¤ � ² �¦¢O¨ C � @ � GD@,EÎCD@,¤¦¤ �o��� ² � ¡-C º<�¦¢=£À� ¶%´ ¢O� C @X´=@#¤ £O� @+» �¦� C °

8:"%;<�=�-;<$ m��¦ çn w0a¿e�N=w�Ilkz_úk¼b \Rkzj=_ø\<dM\,a " K�euHÄ\,y§f!( w*hu]^e-a f0kzj�e-yÍkz_1p " \tsMkOIl_EI¬k h¬e0j�fiw-j�y pÀk h "o�45 � h+w0aReN�alk¼au\ 5 e-j�f£N=w�Ilkz_úk¼b \¬kzj�_ \<d¼\+a �R± @ �=� @:C � @ ¢=� CD¡0C �¦�q¢?> ð C �À£ @ ¢O� C @5C � @x´=@,¤ £ ² � C � "¿@,¤¦@,E¿@ ¢ C �#° ? �§¢�� @ ² @5@#¾q@ ¢ C � ¡0¤¦¤¦¥ �¦¢ C @ ¢�£ C �)�=� @:C � @´=@#¤ £O�Ä�+� E¬B � CD¡0C �¦�q¢ ¡q¤§¤¦¥qJ ² @ ² � ¤§¤ ¢ @,@ £ C ��º<¢O� ² ¡X¤ � C½CD¤§@�E � G @d¡qF �M� C � �=�^� ´=@,¤ £O�#° ?AB�@ �+� ´ � ¡q¤§¤¦¥qJ ¨q� ¾q@ ¢ " �O� ²� ¡ ¢��q¢ @�GD@,BOGD@ � @ ¢ CdC � @:@,¤¦@,E¿@ ¢ C �d� ¶%C � @�´=@,¤ £@> ð ã /I� ¾q@ ¢û«�� �=�^� G @#BOG @ � @ ¢ CD¡-C �§�M¢=�o� ¶�@#¤§@#E¬@ ¢ C �^¯ ��XBA � > ð J�O� ² � ¡ ¢ ² @ �+� E¿B � C @ « GD@,BOGD@ � @ ¢ C^¡-C �¦�q¢i� ¶ ¯ �P�*AËJ©�w!CAËJ©�w�DAý¡ ¢=£ � � A%ã ± @¬¡ ¢=� ² @#G�C � @ � @x � @ � C �¦�q¢��F�@,¤ � ² ÷

' �-��$&;�B�;<��.Uåq� ê ¶�"?��59¶ � G�¡ÀBOG � E¿@u56J6C � @ ¢ C � @¬´=@,¤ £E> ð �¦��� � E¬B=¤§¥iC � @¿´=@#¤ £Ì� ¶o¡0G � C � E¿@+C �¦� E �A£A� ¤ �5 °��o�<�=� C � @ ¢ ¡0C � G^¡0¤ ² ¡ ¥ÀC � GD@,BOGD@ � @ ¢ C�C � @¬@,¤¦@,E¿@ ¢ C �I� ¶ > ð �����=�½�¦¢O¨ C � @ �¦¢ CD@ ¨ @,G �J} L2Xi&�&i&¨XE5?!ÞN�� °�ê C �¦�@#¡ � ¥�C �� ¡qG GD¥ �q� C5¡ £O£A� C �¦�q¢ J�E � ¤§C � BO¤ ��� ¡0C �¦�q¢ J%¡ ¢=£Ì� � FAC G^¡ � C �¦�q¢Ì�§¢ C � @¿´=@,¤ £9� ¡ ¢ F�@ � ¡0GDG � @ £�q� C �¦¢ C � E¿@B � ¤¦¥�¤ �q¨ " °�¸ @,GDEu¡-C ³ � ¤ � C½CD¤§@5C � @ � GD@,E�¡0¤ �½� CD@,¤¦¤ ��� C � ¡-C � ¶FA 3��LOJOC � @ ¢ A �¨( �GA ��� > « E �A£ 5 ¯ ¡ ¢�£ F¼¥ �=� �§¢=¨¡)¶�¡ � C�E �A£A� ¤¦¡qG�@+»AB �M¢ @ ¢ C � ¡0C �¦�q¢ ¡0¤ ¨q� G � C � E�JHA�� ( � ¡ ¢ ¡0¤ � � F�@ �+� E¬B � C @ £��¦¢ C � E¬@uB � ¤¦¥�¤ �M¨ " °i«�ç�� C � ¡0¤¦¤§¥¡ £=£A� C �§�M¢ JOE � ¤ÍC � B=¤ ��� ¡0C �¦�q¢ JO¡ ¢=£��½� FOC G^¡ � C �§�M¢À� ¡ ¢ F�@ �,� E¿B � CD@ £À�¦¢ C � E¿@JI « ¤ �M¨ " B � ¤¦¥Ä¤ �q¨ ¤ �M¨ " ¯l°ë¯è�@+¶ � G @ ¨q�q�¦¢O¨)�q¢ C �À£ @ �D� G � F �¦¢O¨ ´=@,¤ £O�X� ¶ � ¡0G £A�¦¢ ¡0¤ � Cª¥f5 � J ² � @,GD@ +�KOJ ² @ ¢ @,@ £ C �À£ @,´ ¢ @¬C � @ ¢O� C �¦�q¢È� ¶� G GD@ £A���+� FO¤§@XB � ¤¦¥ ¢O� E � ¡0¤ �,°

A ;@B�*%�Ê!#�1��*]m�����ª(+�3�-;<.%/7'M�±¢���;¥1·���Ê>�*%��$&�E¡O�Lå�� �ok¼b-\+j�e9alkzj�d�( ß³â w*hQN=w-y p-j�w�a¬k�e-y¿IÈw�b \,aeoHÄ\,y§f?(fKueN=w-y p-j�w�a¬k�e-y w � ( ß

³â kOIfI,e0k�f_øwm^\ GD@ £O�=�+� FO¤¦@ k hu_ÊgO\,a \)\tsMkOIl_�N=w-y p-j�w�a¬k�e-y¿I � e-j�f " kzjE( ß

³â w*h)fq\<d0aD\D\Àe-_

y§\^e�Il_dw-j�\JIl`=]^g�_ÊgOe-_ w � � �D" R w kOI£I,e0k�fR_øw�m^\5kzala \^f-`=],k�m+y§\xk hXj�w�Il`=]DgfNOw0y p-j�w�axk�e0y�\tsMkOIl_EIiR± @:¡0GD@ ¢=� ² GD@#¡ £ ¥¿C �R£ @ � � G � F�@IC � @�G @#Eu¡ �¦¢O�§¢=¨ ´ ¢=� CD@�´=@,¤ £O�#°

' �-��$&; 1·�LK5;¼�¥B�;<��.Uåq� å @,Cu"=�]5 � ¶ � G�BOG � E¬@£59¡ ¢=£ B �¼�½� C � ¾q@ �§¢ C @ ¨ @#G ½° ? � BOB �M� @ w ��� ¡ ¢�� GDG @ £A�=�+� FO¤¦@B � ¤¦¥ ¢=� E � ¡q¤ � ¶ £ @ ¨ G @#@ =�§¢J> � ß ³ â °%�o� @ ¢�> ðJM� > � ß ³ â �A« w ¯ J �1° @ ° J-C � @ÄG �¦¢O¨�� ¶�B � ¤§¥ ¢O� E � ¡0¤ �7�§¢

³G @ £A�=� @ £ E �A£A� ¤ �w ° ?<B�@ �+� ´ � ¡0¤¦¤§¥MJ�C � @¬@,¤¦@,E¿@ ¢ C �I� ¶ > � ß ³ â �A« w ¯ ¡0GD@5B � ¤¦¥ ¢O� E � ¡0¤ ��� ¶ £ @ ¨ G @#@ � C G �¦� C ¤¦¥�¤§@ � � C � ¡ ¢E ½°¿«1Å�� C @xC � ¡0C

C � @,GD@�¡0GD@d@+»O¡ � C ¤¦¥�5 � �½���^� B � ¤¦¥ ¢O� E � ¡0¤ �,°ë¯xç�£O£A� C �¦�q¢��¦�Ä� CDGD¡ �§¨M� C ¶ � G ² ¡qG £ B � ¤§¥ ¢O� E � ¡q¤�¡ £=£A� C �§�M¢�°o«�Å�� C @�C � ¡0CC � @ £ @ ¨ GD@,@ � ¶�C � @ � � E �¦� ¤§@ � � C � ¡ ¢E Ë� ¶·F � C � B � ¤¦¥ ¢O� E � ¡0¤ ��� ¡ ¾M@ £ @ ¨ G @#@5¤¦@ �D� C � ¡ ¢N ª°ë¯Ái� ¤§C � BO¤ �¦� ¡-C �§�M¢�¦�B�@,G ¶ � GDE¬@ £ E �<£O� ¤ � w J �ú° @ ° J ¨M� ¾M@ ¢ � ¡ ¢=£ " ² @ �+� E¬B � C @q5=� � " �=� �§¢=¨ GD@ ¨q� ¤¦¡qGËB � ¤§¥ ¢O� E � ¡q¤=E � ¤ÍC � BO¤ ��� ¡-C �§�M¢¡ ¢�£ C � @ ¢��+� E¿B � C @IC � @XGD@,Eu¡ �¦¢=£ @#G ² � @ ¢ 5 ���o£A� ¾ ��£ @ £ F<¥ w °��o�O�¦�o��� ¡5B � ¤¦¥ ¢O� E � ¡0¤ �:� ¶ £ @ ¨ GD@,@�¤¦@ �D� C � ¡ ¢ ¡ ¢=£ ² @ £ @,´ ¢ @ � �B"uC � F�@ ���¦¢ C � @ Æ ´�@,¤ £OÇO> � ß ³ â �A« w ¯l°�¸ @#G Eu¡0C ³ � ¤ � C C ¤¦@�C � @ � G @#E�¡qBOBO¤ � @ £ C �x¨ G �q� B �Ë�½�=� ² �C � ¡-C � �¨(�� � ð � > �§¢ C �O�¦� ´=@,¤ £ ¡0¤ �½��°vyÆ��JǼzÉÈ Ê���Ë ��@,G � ¶Ê¥RC � ¡0C > ð ¡ �d£ @ � � G � F�@ £ ¡qF � ¾M@ � ¡0C ��� ´=@ � C � @ £ @+´ ¢O� C �¦�q¢��o� ¶�¡5´�@,¤ £U°�o� @5¡qF � ¾M@ �+�M¢=� CDG ��� C �¦�q¢���� ² �q� ¤ £�¢O� C�F�@x¾q@#G ¥ �=� @,¶ � ¤úJ � ¶ � C ² @#G @ ¢�³ C�¶ � G�C � @�¶�¡ � C�C � ¡-C � GDG @ £A�=�,� FO¤¦@:B � ¤¦¥¼µ¢O� E � ¡0¤ � @+» ��� C�¡ ¢=£�� ¡ ¢ F�@X¶ �q�O¢=£ @ ¹u�,� @ ¢ C ¤¦¥ °

8:"%;<�=�-;<$ m��¦�Pª'y( �RQ¼C ¨ mLST� n w-aI\�b-\+alpN�alk¼au\ 5 e-j�f�N=w�Ilkz_1k¼b-\Xkzj�_ \<d¼\+aU *K7_ÊgO\,a \X\�sMkOIl_LI�e-j�kzala \^f-`=],k�m+y¦\�NOw0y p��j�w�axk�e0y6w*h�fq\<dqa \^\V �w�b \,aW> � ß ³ â R n `Aal_zg=\+a�auw-aD\£Il`=]Dgie�N=w-yÍp-j�w�a¬k�e-y�]^e-j�m^\�h+w-`Aj�fRfq\,_ø\+a�a¬kzj=kOIl_úk�]De0yzy pRkzji_úk¼a¿\B � ¤¦¥ «� XL5 ¯:e0j�fJN�a wMm^eqm,kzy kOIl_1k�]^e-yzyÍp)kzj9\�s�N=\D],_ø\Dfu_1k¼au\ B � ¤¦¥ «� X½¤ �q¨ 5 ¯iR

Å�� CD@ �d�M¢Àç ¤ ¨ @,FOG^¡-µªKAN

Page 22: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

/I� ¾q@ ¢ C � @�¡0F � ¾q@ ² @ � @,@ËC � ¡-C ² @ � ¡ ¢ BOG @,µ �,� E¿B � CD@Ä¡dGD@,B=G @ � @ ¢ C^¡-C �§�M¢I� ¶=¡d´=@#¤ £:�§¢ @,»AB�@ � C @ £ C � E¿@·B � ¤¦¥o¤ �M¨ "¡ ¢�£ C � @ ¢ B�@#G½¶ � G E ¡0¤¦¤�´=@,¤ £¿� B�@,G^¡-C �§�M¢=�·£ @,C @#G E �¦¢O�¦� C ��� ¡q¤§¤¦¥ �§¢ C � E¿@�B � ¤§¥o¤ �q¨ " °�êø¢R� @#G½C^¡ �¦¢R� � @ ¢ ¡qG �¦�M�Ë� C�E¿¡ ¥F�@ �=� @+¶ � ¤�C �¬� ¡ ¾q@ � GDG @ £A�=�,� FO¤¦@�B � ¤¦¥ ¢O� E � ¡0¤�@+»ABO¤ �¦�,� CD¤§¥ °�êø¢X> > ß ³ â�¡ ¢��¦¢ ´ ¢O� C @ � @# � @ ¢�� @ � ¶ � �=�^� B � ¤¦¥ ¢O� E � ¡0¤ ����oº¼¢=� ² ¢Ì«1� ¶ ° ߧNqN-àMJ �o� @ � G @#E�N ° N ° K0ì0â ¯+°

8:"%;<�=�-;<$ m��¦�çn w0a5\�b-\,alpY +ýL K�_ÊgO\�N=w-y p-j�w�a¬k�e-y � >3Z []\ �µ� []\ �ÞN kOIXkzalaD\Df0`=]+k�m,y§\¿w�b-\,a^> > ß �Oâ R�o�<�=� ² @ � ¡ ¢2�,�q¢=� C G �=� Cu´=@,¤ £O�u� ¶ � ��� @�K >3Z [$\ ¶ � Gu@#¾q@,GD¥ �¦¢ C @ ¨ @,G C � C^¡0¤¦¤§¥s@+»ABO¤ �¦�,� CD¤§¥ °þ�o�<�=�u� ¶ ² @ ² @,GD@�¦¢ CD@,GD@ � C @ £��¦¢ ¡)´=@#¤ £Ì� ¶ � �T� @¿¡0C�¤§@3¡ � CJ"�� K V J6¡ ¢=£ - ���X¢O� C � ¶·C � @¿¶ � GDE K$� æ � J ² @ � ¡ ¢ ´ ¢=£ ¡ ¢ - � � ¶C � @RG �¦¨q� C:¶ � G E ² � C � - � � æ -�¡ ¢=£ C � @)G @ �½� ¤ÍC �§¢O¨ ´�@,¤ £ ² �M� ¤ £ F�@ � ¶ � ��� @R¤¦@ �D� C � ¡ ¢ " [ J ² �=�¦�^�û�����q¢ ¤§¥B � ¤¦¥ ¢=� E � ¡q¤§¤¦¥R¤�¡0G ¨ @#GÄC � ¡ ¢À�q� Gd¤ � ² @,GoF �q�O¢=£�°

î¿|�_ }ñ ��:�3`��I���,�x�����5ð h �x�lõÀ���xñ��,�:�+�

± @ �¦¢ C G �A£A�=� @ £ B � ¤¦¥ ¢O� E � ¡0¤ � E¿@#G @#¤§¥R¡ � ¶ � G Eu¡q¤ � � E � · � ¥ ¢ CD¡ � C �¦� @+»ABOGD@ �D�½�¦�q¢�� ² � C �À¢O�¿� @#E¿¡ ¢ C ���,� ¡ �D�½� µ�+� ¡-CD@ £ ² � C � C � @#E °Ë­ ¾-¡0¤ � ¡-C �§�M¢=� ¡ �D�½�A�,� ¡0C @ �½� E¬@ � @,Eu¡ ¢ C �¦�#� C � C � @,E °

A ;@B�*%�Ê!#�1��*]m��EC ¨�e�g=\ @,¾-¡0¤ � ¡-C �§�M¢sw*hxeuN=w-y p-j�w�a¬k�e-y w � [ &� ° ) w � ³ �G��«¿ß³â e-_�_zg=\�N=w-kzj�_ � ��« K�fM\+j�w-_ø\Dfw « � ¯gKIkOI�d0k¼b-\+jÞm,p [a&� ° ) w � �U� R��Ùb-e-y `=e0_1k�w0j%I)w�h�ax`Ay _úk¼b-e-alk�e-_ø\$NOw0y p-j�w�axk�e0y¿IÀe0a \)fM\EH·j�\^f�e0j�e0y§w�d¼w-`VIly p _ÊgO\

\ib e0y `=e-_úk�w-jûw*h w ��«¬ß � ( Xi&�&i&¨X�� V â e0j�f �w���D� ( Xi&�&i&¨XF� V � kOI5fq\,j�w0_ \^f w « � ¯5w-a w « � ( Xi&�&i& X�� V ¯iR­ ¾-¡q¤ � ¡0C �¦�q¢=��� ¡qG GD¥ ¢ ¡-C � G^¡0¤ � @#E¿¡ ¢ C ���,� J �ú° @ ° J w « � ¯ � � « � ¯ � « w � � ¯+« � ¯ ¡ ¢=£ w « � ¯ � � « � ¯ � « w � � ¯+« � ¯+°Ë± @¡0GD@ �¦¢ C @#G @ � CD@ £R�¦¢Àº¼¢=� ² �§¢O¨x�O� ² � ¶zC @ ¢ ¡5B � ¤¦¥ ¢O� E � ¡0¤ � ¡ ¢ @#¾ ¡q¤ � ¡-C @�C �f� @#G ��°��6� ¡ ¢=� ² @,GËC �O���  � @ � C �¦�q¢ J ² @´=G � C �¦¢ C G �<£O�=� @XC � @ ¢O� C �§�M¢)� ¶ £A� ¾ �¦� �¦�q¢�� ¶%B � ¤§¥ ¢O� E � ¡0¤ �#°

' �-�21Ä� å3�Ê!3����*4m��ECyCb A ��}��Eå3����*ý��������� ��!#"%$*� �ok¼b-\+j�NOw0y p-j�w�axk�e0y¿I w X � � ( ß³â h+w-aoI,w�a¿\�HÄ\,y§fX(fK�_zg=\+a \

\tsqkOIl_LIXe¬`Aj�k&�+`=\qN=e-kza:w�hGN=w-yÍp-j�w�a¬k�e-y�I " e0j�fZ�f� h+w0a:�+`=w0_1k�\,j=_Äe0j�f¬a \iaue-kzj�fM\+a ¿kzjc( ß³â I,e-_úkOI±h^p-kzj�d:£ @ ¨�«��0¯ �

£ @ ¨�« � ¯ue0j�f w � � ��"�� �%R n `Aal_ÊgO\,a5_ÊgO\�N=w-y p-j�w�a¬k�e-y " I,e-_úkOI±HÄ\�II£ @ ¨�« " ¯ � £ @ ¨�« w ¯ ! £ @ ¨�« � ¯¬k hI£ @ ¨�« w ¯ +£ @ ¨�« � ¯�R�o� @ ¢ ¡qE¿@ � ¶IC � @�BOG � B �¼�½� C �¦�q¢ ¡0F � ¾q@ ����£A� @�C � C � @i¶�¡ � CRC � ¡0CRC � @iBOG � B �¼�½� C �¦�q¢2��� BOG � ¾q@ £ F<¥ � � E¬B=¤§¥B�@,G ¶ � GDE �¦¢O¨ ¤ �M¢O¨À£O� ¾ ���½�¦�q¢È�§¢ C � @ �=� � ¡0¤�Eu¡ ¢O¢ @,G °:ç BOBO¤¦¥ �§¢=¨ C � @¿¡0F � ¾q@5B=G � B �¼�½� C �¦�q¢ ² � C � � � ³ !?�ý¶ � G� � E¿@0�p� ( J ² @ ¨ @+CoC � ¡0C w �ñ"�� « ³ !v� ¯ � � ² � @,GD@ �x� ¡ �d£ @ ¨ G @#@ � @,G � ¡ ¢=£)� @ ¢�� @ � � (¿°Ë¸=� G½C � @,GDE � GD@@,¾-¡q¤ � ¡0C �¦¢O¨ C � @�@+»ABOGD@ �D�½�¦�q¢ ¡0F � ¾q@�¡-CZ�û¥ � @#¤ £O� w « � ¯ ��" « � ¯ � « � !f� ¯ � � J�¡ ¢=£ C �<�=��� � w « � ¯l°��o�<�=� ² @� ¡ ¾M@ w �Ñ"�� « ³ !�� ¯ � w « � ¯ ¶ � G �½� E¿@£" � ¶ £ @ ¨ G @#@ £ @ ¨�« w ¯ ! N °Ë�o� @�¶ � ¤§¤ � ² �¦¢O¨ B=G � B �¼�½� C �¦�q¢ C � @ ¢ ¶ � ¤§¤ � ² �#°

' �-�21Ä� å3�Ê!3����*4m��EC%m e�g=\�N=w-yÍp-j�w�a¬k�e-y³ !f� f-k¼b3k�fq\�I w k h:e-j�f)w0j=y puk h w « � ¯ � L R

�o�<�=� ² @ ¨ @+CoC � ¡0C � ¶ £A�¦� C �¦¢=� C�@,¤¦@,E¿@ ¢ C � � ( &�&i&�& XF� ë ¡qG @X¡0¤¦¤ � @#G � @ ��� ¶%¡xB � ¤§¥ ¢O� E � ¡0¤ w «Ê�ú° @ ° J w « � � ¯ � Lx¶ � G��ýß +¼â ¯ C � @ ¢ C � @xB � ¤§¥ ¢O� E � ¡q¤d"���e ë� ° ( « ³ !?� � ¯�£O� ¾ ��£ @ � w ° ? �¦¢=� @xC � @ £ @ ¨ GD@,@ � ¶f" ��� + � CI¶ � ¤¦¤ � ² � C � ¡0CC � @ £ @ ¨ G @#@ � ¶ w �¦� ¡0Cd¤§@3¡ � C�+ ° ? � ² @ ¨ @+C ÷

8:"%;<�=�-;<$ m��EC{æ,n w-aXeÙHÄ\,y§fg(fK�e0ji\,y§\ia¿\,j=_ w � ( ß³â \ib e0y `=e-_ø\�I�_ w0á3\+aDw¬w0je-_�auw�Il_U£ @ ¨�« w ¯GN=w-kzj=_LI�kzjh(=R

Å�� CD@ �d�M¢Àç ¤ ¨ @,FOG^¡-µªKqK

Page 23: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

± @ ¢=� ² E � ¾q@ �M¢ C � @ � C � E¿¡0C �¦¢O¨ C � @ ¢<� E5F�@,G � ¶ � @#G � @ �·� ¶7E � ¤ÍC � ¾-¡0G � ¡-C @IB � ¤¦¥ ¢=� E � ¡q¤ �#°��6�¿£A�u�½� J ² @ ¢ @,@ £¡u¾-¡0G � ¡ ¢ C � ¶ �o� @ � G @#EZK ° N æ ¶ � G�E � ¤§C � ¾ ¡qG � ¡-CD@�B � ¤§¥ ¢O� E � ¡q¤ �#°Ä± @ � FACD¡ �§¢� �=�^� ¡¿GD@ � � ¤ÍC�F¼¥)@+»AB=¡ ¢=£A�¦¢O¨ C � @�D�+� B�@ � ¶%C � @XC � @ � G @#Eù¡0F � ¾q@ °7± @X´=G � C ¢ @,@ £ ¡ £ @,´ ¢O� C �¦�q¢�°

A ;@B�*%�Ê!#�1��*]m��ECVõi� ]^w�afax`A_øe-_úk¼b \5alkzj�d « kOI5e-jÀ�§¢ CD@ ¨ G^¡0¤ £A� Eu¡ �¦¢&k h�kz_dfqw3\�I:j�w-_d]Dw0j=_øe-kzjûe-j�p<á#\,a wÀf-k¼b3k¼�I,w-agIgKËkERz\SRTKÄ_ÊgO\,a \xfMwRj�w-_o\�sMkOIl_·j�w-j2�Dá3\,a w�\,y§\ia¿\,j=_LI�p X q �]« Il`=]Dgi_zg=e-_�p � q �üL RÅ�� C @oC � ¡-C�C � @�G �§¢O¨¼�j( ß � ( X�&i&�&¨X�� V â�¡qG @ �¦¢ C @ ¨ GD¡q¤ £A� Eu¡ �§¢=�#°6êø¢ CD@ ¨ G^¡0¤ £O� Eu¡ �¦¢=� ¡0GD@ � ¶ �¦¢ CD@,GD@ � C �§¢ C � ¡-C�C � @,¥¡0GD@¿¡0¤¦E �¼� CX¡ �I¢O��� @u¡ � ´=@#¤ £=�,° ?AB�@ �+� ´ � ¡q¤§¤¦¥qJUC � @¬¶ � ¤¦¤ � ² �¦¢O¨��+�M¢=� CDG ��� C �¦�q¢�¨q� ¾q@ � ¡�´=@,¤ £ C � ¡-C �,�q¢ CD¡ �§¢=� ¡ ¢ ¥¨q� ¾q@ ¢)�¦¢ C @ ¨ G^¡0¤ £A� Eu¡ �§¢�°

A ;@B�*%�Ê!#�1��*]m��EC%ÿ�n w-aÌe-j�kzj=_ø\�dqa e0yIfqw�a¿e0kzj « Kukz_LI ´�@,¤ £Þ� ¶�¶ÊG^¡ � C �¦�q¢=�iK¿fM\+j�w-_ø\Dflk« KukOI_zg=\�alkzjVd Y gOw�I,\\,y§\�au\,j=_LIie0a \�N=e-kzagI«Dp X q ¯ Y kz_ÊgYp �=« e-j�f q �´«�! } L%� K$auw#f0`Ay§wû_ÊgO\È\��,`Ak¼b-e-y§\,j�]^\È«&p X q ¯ M� «Eè X ò¼¯k hp � ò � q � è#R�e�gO\�\,y§\ia¿\,j=_x«&p X q ¯)kOIÀkzj=_ø\+a�N�a \+_ø\^fûe�I�_zg=\Àa e-_úk�w�p%� q R � fqf-kz_úk�w-jüe0j�f�a¬`Ay _úk N�y k�]^e0_1k�w0jþe-a \fq\LHËj�\^f�e-j�e-y§wtd¼w-`VIly p Y kz_Êg«Dp X q ¯ � «Eè X ò¼¯ � «&p � ò � q � è X q � ò<¯5e-j�f�«Dp X q ¯ � «Eè X ò¼¯ � «&p � è X q � ò¼¯�R�o� @X¶ � ¤§¤ � ² �§¢=¨ BOG � B �M� � C �¦�q¢À�¦� @3¡ � � ¤¦¥R¾q@#G � ´=@ £U°

' �-�21Ä� å3�Ê!3����*4m��ECA Dn w-a5\ib-\+alpRkzj�_ \<dqa e-y%fqw�aue-kzj « K@k« kOI5e�HÄ\,y§f#R n `Aal_zg=\+agK « kOI5]^w-j=_øe-kzj�\^fukzjmk« R�o� @u´�@,¤ £9� ¶�¶ÊGD¡ � C �¦�q¢���� ¶ ( ß � ( Xi&i&�&¨X�� V â �¦�5�=�½� ¡0¤¦¤§¥ £ @ ¢O� C @ £)(u« � ( Xi&�&i&¨X�� V ¯ ¡ ¢�£È� C � @,¤¦@,E¿@ ¢ C � ¡0GD@¿C � @G^¡-C �¦�q¢ ¡0¤�¶ �O¢=� C �¦�q¢=�:« GD¡0C �¦�M�o� ¶7B � ¤¦¥ ¢=� E � ¡q¤ �^¯Ä�§¢ � ( X�&i&i&¨X�� V °�o� @�¶ � ¤§¤ � ² �¦¢O¨ ¤¦@,E¿Eu¡ �¦�6¢O� ² ¡ ¢ @3¡ � ¥ �+�M¢=� @# � @ ¢�� @ � ¶¼C � @ ¢=� C �¦�q¢��U� ¶ �¦¢ C @ ¨ GD¡q¤ £A� E¿¡ �§¢�� J#´=@,¤ £O�7� ¶<¶ÊG^¡ � C �§�M¢=� J¡ ¢�£)�o� @ � GD@,E�K ° N æ °

n ;<$&$ ¡ mU�LCA� e�gO\¥NOw0y p-j�w�axk�e0y � «�|6¯ � ( ß | â kOI&edá#\,a wþw*h9_ÊgO\�N=w-yÍp-j�w�a¬k�e-y w «�| X ³ ¯ � ( ß | âøß ³ â � kERz\SRTKw «�| X � «&|6¯½¯ � L ûk hÌe-j�fýw-j�y p k h ³ ! � «�|6¯Ìf-k¼b3k�fq\�IÈ_ÊgO\=N=w-y p-j�w�a¬k�e-y w «�| X ³ ¯iRpo5\,j�]^\_ÊgO\=N=w-y p-j�w�a¬k�e-y wgOe�Ixe-_qa¿w�I^_�£ @ ¨ ¯ « w ¯Zá3\+a w3\�IIkzj@( ß � ( X�&i&i&¨X�� V â R' �-���)( �o� @IBOG �¼� ¶ �¦�o� � E¿BO¤¦@ °�± @ � � E¿BO¤¦¥u¾ � @ ² w ¡ � ¡�B � ¤§¥ ¢O� E � ¡q¤ �¦¢ ºsß

³â J ² � @,GD@�º � (u« � ( Xi&�&i&¨X�� V ¯

��� C � @¬´=@#¤ £È� ¶Ä¶ÊGD¡ � C �¦�q¢���� ¶ ( ß � ( Xi&i&�&¨X�� V â ° ? �§¢=� @ � ��º J � CX¶ � ¤§¤ � ² � C � ¡0C w « � ¯ � L �§í³ ! � £O� ¾ ��£ @ � w

« ¶ÊG � E ö G � B �M� � C �¦�q¢ K ° N3K ¯+°�¸=� G C � @#G E � GD@qJ �o� @ � G @#EZK ° N æ J=¡0B=BO¤ � @ £ C � w �9º ß³â J � ¡ ¥ � C � ¡-C w � ¡ � ¡0C�E �M� C

£ @ ¨ ¯ « w ¯ G �<� C �Ä�¦¢ º&J ² �O���^�i�+�M¢ C^¡ �¦¢=�( ß � ( X�&i&�& X�� V â °

�o� @X¶ � ¤§¤ � ² �§¢=¨ C � @ � G @#E �¦��¢O� ² ¡ ¢ @3¡ � ¥ �§¢�£A�=� C � ¾M@ �+�q¢�� @3 � @ ¢=� @ � ¶ å @,E¿Eu¡uK ° N à °

8:"%;<�=�-;<$ m��ECA�i� j�w-j2�Dá3\,a w N=w-y p-j�w�a¬k�e-y w � > ð ß � ( Xi&i&�& X�� V â kOIýj�w-j2�Dá3\,a w w-jùe0_y§\^e�Il_ e V� ° ( « "�!£ @ ¨ \ À « w ¯ ¯ÙN=w-kzj=_LI�kzjX> V ð R' �-���)( ± @ � C^¡0G CýF<¥ ¾ � @ ² �¦¢O¨�> ð ß � ( Xi&i&�& X�� V â�¡ � ¡ B � ¤¦¥ ¢O� E � ¡0¤ �¦¢q> ð ß � ( X�&i&i&ZX�� V � ( âøß � V â ° è�¥å @#E¿E¿¡iK ° N-à<JUC � @,GD@R¡0GD@¬¡0C:E �M� C £ @ ¨ \ 0 « w ¯X�^�=�q��� @ �X� ¶�� V � > ð ß � ( X�&i&i&ZX�� V � ( âÄ¡ ¢=£Ì� @ ¢=� @ �§¢N> ð � �=�^�C � ¡-C w « � ( X�&i&i&ZX�� V � ( XF� V ¯ � L °Þ¸=� GR¡ ¢ � V �½���^� C � ¡-C w « � ( Xi&i&�&¨X�� V � ( X�� V ¯v3� L « ¡ ¢=£ C � @#G @�@,» ��� C"�! £ @ ¨ \ 0 « w ¯�� �=�^� � V ³ �^¯ JA¤¦@+C w �r0 « � ( Xi&�&i& X�� V �¨( ¯ � w « � ( Xi&�&i&¨X�� V �¨( XF� V ¯+° ? �§¢�� @ w �s0 �¦� ¡xB � ¤§¥ ¢O� E � ¡q¤�¦¢c( ß � ( X�&i&�&¨X�� V � ( â ² � C ��£ @ ¨ \ À « w �r0 ¯Ù�s£ @ ¨ \ À « w ¯ J � CĶ � ¤¦¤ � ² ��« F<¥ �¦¢=£A��� C �¦�q¢��q¢ - ¯ C � ¡-C w �s0 ���·¢O�M¢ µ � @,G ��q¢ ¡-C�¤¦@#¡ � C e V �¨(� ° ( « "£! £ @ ¨ \ À « w ¯ ¯ B �M�§¢ C �d�§¢@> V �¨(ð °Ë�o� @XC � @ � GD@,E ¶ � ¤¦¤ � ² �#°

Å�� CD@ �d�M¢Àç ¤ ¨ @,FOG^¡-µªK æ

Page 24: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

± @ � ¡ ¢È£ @,G � ¾M@ � C � @,GI¾-¡0G � ¡ ¢ C ��� ¶ËC � @5C � @ � G @#E�¡0F � ¾q@ °:Ã�¢ @ � �=�^� ¾-¡0G � ¡ ¢ C�C � ¡-C �¦�  �O� C @¬B � B � ¤�¡0G �§¢ C � @® ? �+� E¿E �O¢O� Cª¥qJ � ¶zCD@ ¢ CD@,GDE¬@ £ ? �^� ² ¡0G C �q³ � ¤¦@,E¿Eu¡ � G�C � @ . @ Á� ¤¦¤ � µ å6� BOC �q¢ µø? �^� ² ¡0G C � µ Þ � BOB�@,¤�¤¦@,E¿Eu¡ß K0ìAJéqìOJ�N3KMH#âúJ ��� C � @X¶ � ¤¦¤ � ² �¦¢O¨�÷

8:"%;<�=�-;<$ m��ECA�i� j�w-j2�Dá3\,a w�N=w-y p-j�w�a¬k�e-y w � > ð ß | â w*hI_ w0_ e0y�fq\<d0aD\D\�òikOI�á3\,a wuw-j�e0_Ga¿w�Il_·e0òV� " h^a eM]+_úk�w-jw*h:_zg=\�N=w-kzj�_EIXkzjX> V ð R��;<$p¡O�É�4�Ëè � C �u�o� @ � G @#E � K ° N#ìX¡ ¢=£ K ° N3é � ¡ ¢ ¡0¤ �½� F�@d@+»<C @ ¢=£ @ £ C �:�+�M�O¢ C�C � @ ¢<� ExF�@#G � ¶ � @#G � @ ���¦¢R� � E¿@� B=¡ � @ � ¶6C � @X¶ � GDE ¼ V ¶ � G¼ â > ð JOF � C ² @ £A�q¢�³ C £A�u� �¬� @,GD@ °' �-���)( �o� @ÀB=G �<� ¶I¡ ¨ ¡ �§¢ ¨q� @ � F<¥ �¦¢=£A�=� C �¦�q¢ JÄF � CuC �=�¦� C � E¿@ �§¢ C � @ÀGD@,¾M@,G � @ � G £ @,G ° å @+C ò V F�@�C � @£ @ ¨ GD@,@ � ¶ w �§¢ � V ¡ ¢�£ ¤§@,C w V � ( ß � ( Xi&�&i& X�� V �¨( â7F�@�C � @ �+� @ ¹R�+� @ ¢ C � ¶/� & 0 �¦¢ w J ² � @#G @ ² @�¾ � @ ² w ¡ �¡ ¢ @,¤¦@,E¿@ ¢ C � ¶ ( ß � ( Xi&�&i&¨X�� V �¨( â ß � V â °ËÅ�� CD@�C � ¡-C�C � @�C � CD¡q¤ £ @ ¨ G @#@ w V ��� ¡0C�E �¼� C ò ! ò V °�¸O� Go¡xGD¡ ¢=£A� E�^�O�M�¦� @ � ¶�� ( Xi&�&i& X�� V � ( � > ð JAF<¥ �§¢�£A�=� C �§�M¢ ² @ � ¡ ¾q@�C � ¡-CoC � @XBOG � F�¡0F � ¤ � Cª¥¿C � ¡-C w V « � ( X�&i&i&¨X�� V � ( ¯ � L��� ¡0C·E �M� C «&ò ! ò V ¯t� " °�ê ¶UC �O��� @,¾q@ ¢ C � ¡0B=B�@ ¢=� J¼C � @ ¢ ² @ ¨M� ¾M@ � B « ¡ ¢=£ ¡ � � � E¿@ w « � ( Xi&i&�&¨XF� V �¨( X�� V ¯ � L¶ � GÄ¡0¤¦¤�� V ¯l°�­ ¤ � @ ² @ ¨ @+C·¡XB � ¤¦¥ ¢O� E � ¡0¤ � « � V ¯ 8i:<;� w « � ( X�&i&�&¨XF� V � ( X�� V ¯��¦¢¬�M¢ @d¾-¡0G � ¡qFO¤¦@ � ¶ £ @ ¨ G @#@ ò V ° è�¥�o� @ � GD@,EÉK ° N æ ¡�G^¡ ¢=£O� E �^�O�q��� @ � ¶*� V ��� ¡ � @#G ��� ¶ � ² � C � BOG � F=¡0F � ¤ � Cª¥�¡0C%E �M� C ò V � " °%¸O� G w « � ( Xi&i&�& XF� V ¯C � F�@ � @,G � J � CoE �=� CoF�@�C � @ � ¡ � @�C � ¡0C w V « � ( Xi&i&�&¨XF� V �¨( ¯ �ÞL � G � « � V ¯ �ÞL=J �o�<�=� F<¥¿C � @ �O¢O�¦�q¢ F �M�O¢=£ J² @�´ ¢=£ C � ¡0C w « � ( Xi&�&i& X�� V ¯ �üL ² � C � BOG � F�¡0F � ¤ � Cª¥�¡0CoE �¼� C «Dò ! ò V ¯�� "�� ò V � "J� òV� " °¸%�§¢ ¡0¤¦¤§¥ ² @ £ @ �D� G � F�@�¥q@,C·¡ ¢O� C � @#G˾-¡0G � ¡ ¢ C�C � ¡0C ² ¡ � C � @�¾q@#G � �§�M¢x��� @ £¿�§¢ C � @ � ¤�¡ �D� �¦� ¡0¤ � @#@ £ µ Ái� ¤¦¤§@#G �+�A£ @ �,°

8:"%;<�=�-;<$ m��Om ¨DïEh w � ( ð ß � ( X�&i&i&¨X�� V â g=e�IXkzj�f-k¼b3k�f-`=e0y7fq\<dqa \^\5e0_Ga¿w�Il_� �kzj�\DeM]DgPb e0alk�eqm,y§\xe0j�f5g=e�IX_ w0_ e0yfq\<dqa \^\�ò � +u� ��K·_ÊgO\,jikz_·kOI�j�w0j2�Dá3\,a wRw-jÌe-_·y¦\De�Il_Ä« N�! <� " ¯ ë « N�! �#� " ¯Gh^a eq],_1k�w0jÌw�hX_zg=\�kzj�N�`A_EI�h^a w�a�> V ð R�o� @:B=G �<� ¶ � ¶%C � @�C � @ � G @#E ��� ¡ � � E¿BO¤¦@:¾-¡0G � ¡ ¢ C � ¶�C � @:C ² � BOG �<� ¶ � ¡0F � ¾q@:¡ ¢=£i�½� ² @ ² �q¢�³ C�GD@,B�@#¡-C � C °dê C��� E � GD@ �§¢ C @#G @ � C �§¢=¨ C �R� @#@:¡ �+�M¢=� @3 � @ ¢=� @ ° ? � BOB �M� @ ² @ � ¡ ¾M@�¡¿E � ¤§C � ¤ �¦¢ @3¡0GdB � ¤¦¥ ¢=� E � ¡q¤ � ¶%C � CD¡q¤ £ @ ¨ G @#@+ � ¾M@,G > > °��o� @ ¢�� C ����¢O�q¢ µ � @#G �5�q¢ ¡0C�¤¦@#¡ � Co¡¬K ��ë ¶ÊG^¡ � C �¦�q¢R� ¶�C � @ £A� E¿¡ �§¢X> V>)°��o�O�����¦� @,»A¡ � CD¤§¥¬C � @ º<�¦¢=£� ¶�GD@ � � ¤ÍCoC � ¡-C ² ¡ ���=� @ £À�¦¢ C � @ � G �¦¨q�¦¢ ¡0¤ � @#@ £ µ Ái� ¤¦¤§@#G �+�A£ @ �,°

î¿|$t u �����%�5~×� h ���d���Z� ¬��~v����,�i�

Ý @#G @ ² @5GD@,¤�¡ ¥ � � E¿@xF=¡ � �¦�¬£ @,´ ¢O� C �¦�q¢=� ¡ ¢�£ GD@ � � ¤ÍC � ¡0F �q� CI¤ �¦¢ @#¡qG�¡0¤ ¨ @,F=GD¡¿C � ¡-CI¶ � GDE�C � @¬F�¡ � �¦��� ¶·¤ �¦¢ @#¡qG�+�A£ @ �,°± @ ² � ¤¦¤OF�@ �+�q¢��½��£ @,G �¦¢O¨I� � F � B=¡ � @ ��� ¶=C � @d¾q@ � C � G � B�¡ � @ > ® ð J ² �O�¦�^�¿��� @ ¢=£O� ² @ £ ² � C � ¡ ¢ ¡ £=£A� C �§�M¢¿� B�@,G^¡-C � GÆ � Ç ¡ ¢=£ ¡ � � ¡0¤�¡0G µú¾M@ � C � G�BOG �<£O�=� C Æ � Ç J ² � @,GD@ � ¶ | ���±� ( X�&i&i&¨X�� ® � ¡ ¢=£ >w���±¦ ( Xi&�&i& X�¦ ® � JOC � @ ¢�| � > ��±� ( �p¦ ( X�&i&i&ZX�� ® �p¦ ® � ¡ ¢�£ ¶ � G��p� > ð J��6� | ���D����� ( X�&i&i&¨X������ ® � °A ;@B�*%�Ê!#�1��*]m��Om CC n �1*7;V¡A��å#/�¢Uå�1/¡O'q;w�C� I^`=m�I,\+_�x â > ® ð�kOI9eýy kzj�\De0a6Il`=m�I�NOeM]D\ w*hc> ® ð k h�h+w-aû\ib \,alp| X½>µ� x e0j�f)\�b-\+alp �µ� > ð kz_·kOI�_ÊgO\¬]^e�I,\:_ÊgOe0_T| �&>µ� x e-j�f ��� | � x�RA ;@B�*%�Ê!#�1��*]m��Omymy�zQ¡2å#�Lås{ A �1$&;<*�å3����*j� e�gO\X� B=¡ ¢2w*h$b-\^]+_øw-agI�| ( Xi&�&i&¨X | ë KofM\+j�w-_ø\Df¬� B=¡ ¢7«�| ( Xi&i&�&¨X | ë ¯�KkOI�_zg=\�I,\+_�} [ ë� ° ( � � � | � � � ( Xi&�&i&¨X�� ë � > ð � R � I,\+_xw�hPb \^],_ w0agIr| ( Xi&�&i& X | ë kOI ¤ �§¢ @3¡0GD¤§¥ �¦¢=£ @#B�@ ¢=£ @ ¢ Ck h [ ë� ° ( � � � | � � ¨�k¼a�N�y k�\�I � ( �r���i��� � ë �ZL R n w-a�e�yÍkzj�\^e-a×I^`=m�I�NOeM]^\!x â > ® ðUK5e6I,\+_:w�h×b-\^]+_øw-agI| ( Xi&i&�&¨X | ë � xÑh+w0a�a�IRe F=¡ �½���¿k h¬_zg=\ob-\D],_øw-agI¿e0a \uyÍkzj�\^e-aly pikzj�fq\9NO\,j�fM\+j�_Ie0j�fÀ_ÊgO\,kzaQI�N=e-js\��,`=e-y¿IOx�Rµe�gO\£A� E¿@ ¢=� �§�M¢sw*hxKÄfq\,j�w0_ \^f:£O� E «#xįgKËkOI�_ÊgO\$Ilk�á#\¬w*h:_zg=\:y§e0aLd¼\�Il_dmDe�IlkOI�h+w0a|x�R

Å�� CD@ �d�M¢Àç ¤ ¨ @,FOG^¡-µªK-á

Page 25: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ö ¤�¡ ¥ �§¢=¨ ¡0G �q�=¢=£ ² � C � C � @ £ @,´ ¢O� C �¦�q¢=� J �q¢ @ � ¡ ¢)� �O� ² @3¡ � � ¤¦¥¬C � ¡0C�C � @ � B�¡ ¢�� ¶%¡ � @,C � ¶6¾q@ � C � G �·��� ¡5¤ �¦¢ @#¡qG� � F � B=¡ � @qJ�C � ¡-C�@,¾M@,GD¥À¤ �¦¢ @#¡qG � � F � B=¡ � @ � ¡ � ¡�F�¡ � �¦� J�¡ ¢=£ C � ¡0C:¡0¤¦¤%F�¡ � @ � ¶ � G�¡ ¨q� ¾q@ ¢Ì�½� F � B�¡ � @ � ¡ ¾q@xC � @� ¡0E¿@ � �T� @ °9Ã�¢ @ ² ¡ ¥ÈC �Ì£ @ �D� G � F�@�¡�¤ �¦¢ @3¡0G � � F � B=¡ � @ ��� C ��¨M� ¾M@ � C � F�¡ � �¦�#°�çù£O�Íí @,GD@ ¢ C ² ¡ ¥ ��� C ��¨M� ¾M@�+�M¢=� C G^¡ �¦¢ C �d� ¡0C ��� ´�@ £ F<¥�@#¤§@#E¬@ ¢ C ��� ¶7C � @ � � F � B=¡ � @ °�± @5E � ¾M@XC � ² ¡0G £O� C �O����¢=� C �¦�q¢i¢ @+»<C °o�6�)£A�R�½� J ² @¢ @#@ £ C � @ ¢O� C �§�M¢�� ¶Ä¡ ¢Ì£A� C�BOG �A£A�=� C � ¶Ä¾q@ � C � G �#°:¸O� G | �}�±� ( X�&i&�&¨X�� ® � ¡ ¢=£ > �}�E¦ ( X�&i&�&¨X�¦ ® � J�C � @ £A� CBOG �A£A�=� C � ¶ | ¡ ¢=£ >ËJ £ @ ¢O� C @ £ � | X½> � JO@3 � ¡0¤ � [ ®� ° ( � � ¦ � °A ;@B�*%�Ê!#�1��*]m��Om æ* ä /7�1� z 1/¡O'q;w��n w0a:e¿y kzj�\^e0a�Il`=m�ILN=eq]^\|x â > ® ð K�kz_Ëj�`Ayzy I�N=eq]^\�KÄfq\,j�w-_ø\^f�xf~qK�kOIX_zg=\£I,\+_} >�� > ® ð ��� | X > � �üL{� R' �-�21Ä� å3�Ê!3����*4m��Om2õ e�g=\¿j=`Ayzy�I�NOeM]D\uw�hxe)y kzj�\De0a�Il`=m�I�NOeM]D\Ox â >2® ð kOI¬e-y¿I,wie)y kzj�\De0a$Il`=m�ILN=eq]^\uw�hV>2® ðþe-j�fgOe�Ixf-k¼au\+j2Ilk�w-jק ! £A� E «#xį�Rç ¶ � ¤§¤%BOG �<� ¶ � ¶�C �O��� ¡ � � @,G C �¦�q¢ C � G ¢����M� C�C � F�@ � � E¿@ ² � ¡-C �,� E¿BO¤ �¦� ¡-CD@ £ J�¡ ¢=£�� @#@,E � C ���¦¢ ¾ � ¤¦¾q@5BOG � ¾ �¦¢O¨C � @ ² @,¤¦¤Íµ º<¢O� ² ¢ F � C ¢O�q¢ µ1CDG � ¾ � ¡q¤�¶�¡ � C�C � ¡-CIC � @xG � ² G^¡ ¢OºÀ� ¶�¡uEu¡-C G � »�@3 � ¡0¤ ��� C �X�+� ¤ � E ¢ GD¡ ¢Oº�°�êø¢=� C @#¡ £� ¶dBOG � ¾ �§¢=¨ C �O��� J ² @ ² � ¤§¤ ¨q� ¾q@)¡ � @ ¢=� @ � ¶ �O� ² C � @�BOG �<� ¶ ¨q� @ � J%F¼¥Ì@ �D� @ ¢ C � ¡0¤¦¤§¥ ¨q� ¾ �§¢=¨ ¡ ¢ ¡q¤ ¨M� G � C � E�C ��+� E¿B � C @oC � @oF=¡ � ����� ¶=C � @ ¢<� ¤¦¤ � B�¡ � @ xf~ J ¨q� ¾q@ ¢ ¡IF=¡ �½����� ¶�C � @ � B=¡ � @ x�°7�o� @ £ @ �D� G � BOC �¦�q¢¬�§¢ C � @o¶ � ¤§¤ � ² �¦¢O¨B=¡qGD¡ ¨ G^¡0B ������¢=� C � @,¤§¶zµ �+�q¢ C^¡ �¦¢ @ £ · GD@#¡ £A�§¢=¨ C �O��� B=¡0G^¡ ¨ GD¡qB ���¦��¢O� C � �O� C @ £ ¶ � GX¡0¤¦¤%¡ �=£A� @ ¢=� @ �#°�ç F�@+C C @,G¡0B=BOG � ¡ �^� E¿¡ ¥�F�@XC � GD@#¡ £ ¡ �^� ¡qBAC @#G �q¢ ¤ �¦¢ @3¡0G�¡0¤ ¨ @#FOG^¡:¶ÊG � Eù¡xCD@+»<C �q¢ ¡0¤ ¨ @#FOGD¡ « @ ° ¨�° J7ß à æ â ¯+°? � B=B �¼� @ | ( Xi&�&i& X | ë ¶ � G E ¡iF=¡ �½��� ¶ � G x�°)å @+C!� � > ë9� ®ð F�@uC � @�E¿¡0C G � » ² �O�M� @o�úC � G � ² ���0| � ° ? �¦¢=� @| ( Xi&i&�&¨X | ë ¡qG @�¤ �§¢ @#¡0GD¤¦¥ �¦¢=£ @#B�@ ¢=£ @ ¢ C3J � C�¶ � ¤¦¤ � ² � C � ¡-C�C � @:G^¡ ¢Oº)� ¶f� �¦� + °�«�Å�� C @:C � ¡0C ² @ £A�¦£O¢�³ CIG @3¡0¤¦¤§¥£ @,´ ¢ @ÄC � @ÄGD¡ ¢OºX� ¶=¡�Eu¡0C G � »£· C � @#G @ ² � ¤¦¤¼F�@ � C � @,G �½���^� C G^¡ ¢=� ¨ GD@ �D� �§�M¢=���§¢ C �O��� B=¡0G^¡ ¨ GD¡qB ��°ë¯�êø¢ B=¡0G C ���+� ¤¦¡qGC �=�¦� E¿@#¡ ¢=� C � @,GD@ ��� ¡ ¢Ì�¦¢ ¾M@,G C � FO¤¦@I+ ¤ + �½� F=E¿¡0C G � » �¦¢ � ° è�¥B�@,GDE � C �¦¢O¨ C � @ �+� ¤ � E ¢��X� ¶�ÈJ ² @ � ¡ ¢² G � CD@ � CI¡ � � � ß � � z:â ² � @#G @x� ��� ¡ ¢��§¢ ¾q@#G½C � F=¤§@ �  � ¡0GD@�Eu¡-CDG � »�¡ ¢=£ z �¦� C � @xG @ � C °�Å�� C @5C � ¡0C ² @5¡0GD@�¦¢ CD@,GD@ � C @ £��§¢ ¡RF=¡ � �¦��� ¶�C � @ � B=¡ � @ xf~ � } >4�¼>�� � ¨ � °d± G � C �¦¢O¨ ¡q¤§¤7¾q@ � C � G � > � > ® ð ¡ � >µ� « >��ÙX½>�� ¯² � @#G @u>��'� > ëð ¡ ¢=£ >�� � > ® ��ëð J ² @ ¨ @+C5>����¸�2>��Wzr� ¨ ¶ � G5¡q¤§¤·>ç� xW~�°À�o�O��� @ � � @ ¢ C � ¡0¤¦¤¦¥¥ � @#¤ £O�xf~ � }¼« !d>��Uz¬�¥� (�X½>�� ¯ � >��]� > ® �¨ëð �MJ � ¡ º¼�¦¢O¨ >��2C � F�@:¡q¤§¤�C � @ �=¢O� C�¾M@ � C � G �o¨q� ¾q@ ��§ !v+)¾q@ � C � G � C � ¡0C¨ @ ¢ @,G^¡-CD@ x ~ °�o� @ �,� GDG @ � C ² ¡ ¥iC � C �O�¦¢OºÌ� ¶oC � @ ¢<� ¤§¤ � B�¡ � @ xW~��¦� C � ¡0C � C � E¿@#E5F�@,G ��¨q� ¾q@u¤ �§¢ @#¡0G �+�M¢=� CDGD¡ �§¢ C �X�q¢ C � @E¿@,ExF�@#G �I� ¶ x�°:­�° ¨=° J�C � @¬¾q@ � C � GI>]� xf~ @ ¢ ¶ � G � @ � C � @ �+�q¢�� CDGD¡ �§¢ C [ ®� ° ( ¦ � � � � L �q¢ C � @¿¾q@ � C � G �| �¦¢x�° ? �¦¢=� @ � C �½�A¹R� @ � C ��� ¡-C ��� ¶Ê¥C � @ �+�M¢=� CDGD¡ �§¢ C ��¨q� ¾q@ ¢ F<¥9¡ ¢ ¥�F�¡ � �¦��� ¶ xf~ « C � @ � C � @#G �+�M¢=� C G^¡ �¦¢ C �X¨ @,C� ¡-C ��� ´=@ £ ¡ � C � Eu¡-C �¦� ¡0¤¦¤§¥ ¯ J<C � @�F=¡ �½���o� ¶ xf~s¨q� ¾q@ � ¡ ¢ ¡0¤§C @,G ¢ ¡0C @ �½���,�+�¦¢=� C�G @#BOG @ � @ ¢ CD¡-C �§�M¢�� ¶ x�°± @ ¢=� ² E � ¾q@ �q¢ C ���+� E¬B � CD¡0C �¦�q¢ ¡q¤¼¾M@,G �½�¦�q¢��6� ¶=C � @o¡qF � ¾M@ÄGD@ � � ¤§C �#÷6Ái�¼� C � ¶�C � @ � @ �+� E¿B � CD¡0C �¦�q¢ ¡q¤AG @ �½� ¤ÍC �© �=� C·F �O� ¤ £¿�q¢ C � @d@ � � @ ¢ C � ¡q¤A¶�¡ � C�C � ¡0C / ¡ �=�D� � ¡ ¢ @#¤ � E �§¢ ¡0C �¦�q¢ ² � G º<��� ¾M@,G�¡ ¢ ¥5´=@,¤ £�« ¡ ¢�£¿¢O� CU© �=� C·G^¡-C �§�M¢ ¡0¤ �� GdGD@#¡q¤ ��� G �+� E¿BO¤¦@+»A@ �D¯+°

8:"%;<�=�-;<$ m��Omyÿ �ok¼b-\+j e aue-_úalkòs � Y g=w�I,\ a w Y I e0a \É_ÊgO\|b \^],_ w0agI5| ( X�&i&i&¨X | ë � > ® ð/Küy§\,_Nx �� B=¡ ¢6«&| ( X�&i&i&ZX | ë ¯�R�e�g=\+j2K·_zg=\�h+w0yzy§w Y kzjVd�N�a wMm+y¦\�aQIx]^e-jÈm^\$I+w0y�b-\Df�kzj�_úk¼au\ I « «±§ ��+ ¯ [ ¯,b� R n w0a�§ �ñ+ KÄ]^w�a�N�`A_ø\:_ÊgO\¬fq\,_ \,a�a¬kzj�e-j�_ow�h � R� R×��w�aN�`A_ \5_ÊgO\5a e-j{ðRw*h � R� R£ï±h�aDe-jVð �k��+ K%_ÊgO\,je�N I,\,`=fqw��økzj b \,agI,\uaue-_úalkòs �6�¨( Il`=]^gR_ÊgOe0_ �?�6�¨(� ( ë K Y gO\,a \ ( ë kOI�_ÊgO\ + ¤ +k�fq\,j=_úkz_1poaue-_úalkòsVR� R1��k¼b-\,jÀeJb-\^]+_øw-a ¢ � > ® ð K�]Dw�aN�`A_ \�eJb-\^]+_øw-a4| e0j�f5e$a¿e0_1alkòs�ôrIl`=]Dgu_zg=e-_6_ÊgO\I,\+_Z}���� � | �¿> ô � >G�

kOIX_ÊgO\$I,\+_ow*huI,w0y `A_1k�w0j%I�_øw�� �k�4¢ k huIl`=]^ge�I,w0y `A_1k�w0jÌ\tsMkOI^_LIiR

Å�� CD@ �d�M¢Àç ¤ ¨ @,FOG^¡-µªKqH

Page 26: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

î¿|$� Ì×� h ~����7���¿���,��������,�i���uõ�ñò�I��~Ë�+�d���

± @ � ¡ ¾q@u¡q¤§GD@#¡ £ ¥i@ ¢=�,�q�O¢ CD@,GD@ £Ì�q¢ @uGD@,B=G @ � @ ¢ C^¡-C �§�M¢ ¶ � G5@,¤¦@,E¿@ ¢ C � ¶�¡)´=@#¤ £N> ð J ² � @#G @="P�,5 � ¶ � G � � E¿@BOG � E¿@ « B � ² @#G ¯ 5o· ¢ ¡qE¿@,¤¦¥qJ¼C � @�@,¤¦@,E¿@ ¢ C �Ë� ¶ > ð ¡0GD@�B � ¤¦¥ ¢=� E � ¡q¤ �·� ¾q@#G > � °�Ý�� ² @#¾q@#G � C �¦�Ä� ¶zCD@ ¢ C �5º<¢O� ²¡0F �q� C � C � @,GdGD@,BOGD@ � @ ¢ CD¡0C �¦�q¢=�#°7Ý @,GD@ ² @ £ @ � � G � F�@�C ² �i« ¡ � C � ¡0¤¦¤§¥ �M¢ @�¡ ¢=£ ¡ � ¡q¤Í¶ ¯ G @#BOG @ � @ ¢ CD¡-C �§�M¢=�#°�o� @�´=G � C�G @#BOG @ � @ ¢ CD¡-C �§�M¢u�¦���M¢ ¤§¥ � @,E � µ ¡ £ @# � ¡0C @ �¦¢ C � ¡-C � C £ @ � � G � F�@ �Ä�O� ² C �¿£A� ¡ £O£A� C �¦�q¢)�§¢c> ð JAF � C ¢O� C�O� ² C � E � ¤§C � BO¤§¥ ° è � C � C ���I�=� @,¶ � ¤�C �À¨ @,C�C � C � @ � @ �+�M¢=£ GD@,BOGD@ � @ ¢ C^¡-C �¦�q¢6°X¸=� G C � @#G � C �¦�I� ¶zC @ ¢È�=� @+¶ � ¤�C �C �=�§¢Oº)� ¶%C � @XC ² �¿�½� E � ¤§CD¡ ¢ @ �M�=� ¤§¥ °%± @ ¢O� ² � C^¡0G C ² � C � C � @ �½� E¿BO¤¦@�G @#BOG @ � @ ¢ CD¡-C �§�M¢�°

Ú ��;<�1.�å¡2å}�;¼'q!#���$åi1/¡O'M;�åM� ç2�½� E¿BO¤§@ ² ¡ ¥IC � C �O�¦¢Oº:� ¶ > � \ �¦� ¡ ��> �� µ �ú° @ ° J0´=@,¤ £ @#¤§@#E¿@ ¢ C � ¡0GD@7© �=� C�¾M@ � C � G �� ¾q@#G > � ¡ ¢�£ ´=@,¤ £ ¡ £O£A� C �¦�q¢R��� © �=� Co¾q@ � C � GÄ¡ £O£A� C �¦�q¢�°�¸=� GDE¿¡q¤§¤¦¥qJMC � @,GD@ ��� ¡ ¢R�§¢ ¾M@,G C � FO¤§@�C G^¡ ¢=� ¶ � GDEu¡-C �§�M¢!x2÷> � \ W�> �� J¼C � ¡-C�� � > � \ ��� GD@,BOGD@ � @ ¢ CD@ £ F<¥5C � @I@,¤¦@,E¿@ ¢ C x�« � ¯ � > �� °�� �=�^� C � ¡-C x�« �Q��A ¯ � x�« � ¯ � x�« A ¯l°Ý�� ² @,¾M@,G�C �=�¦� GD@,B=G @ � @ ¢ C^¡-C �§�M¢�£A� @ �d¢=� C ¨q� ¾q@�¡ � ¤ � @ �q¢À�O� ² C �u£A� ´=@#¤ £ E � ¤ÍC � BO¤ ��� ¡-C �§�M¢�°

Ú ��;<�1. ;<��;<$&;<*�!Så6¡%å9���1*7;V¡A�û!#��¡O*�åÉ( �=�-$p¡O!#����*Uåq� Ã�¢ @ ² ¡ ¥ÌC � C �O�¦¢Oº&� ¶�¡´�@,¤ £ @,¤¦@,E¿@ ¢ C ��� C � ¡-C¬C � @@,¤¦@,E¿@ ¢ Cr� £ @,´ ¢ @ � ¡iEu¡0B)Aa� W �p��A °iÅ�� ² � ¶ ² @uGD@,BOGD@ � @ ¢ CYAÞF<¥ � C � ¤ �¦¢ @3¡0G:GD@,BOGD@ � @ ¢ C^¡-C �¦�q¢ J�C � @ ¢ ² @¨ @,C5C � ¡-C.� �¦� ¡ y kzj�\^e-a Eu¡0B&¶ÊG � E > �� C ��> �� °9êø¢&� C � @,G ² � G £O� J � ¶ ² @R´O»9C � @)¤ �§¢ @#¡0G¬GD@,BOGD@ � @ ¢ CD¡0C �¦�q¢)x JC � @ ¢&�+� G GD@ � B �q¢=£A�¦¢O¨ C � �·J ² @ � ¡ ¢&£ @+´ ¢ @�¡iEu¡0Bb� � ÷�> �� W�> �� J ² � C � � � «�x�« A ¯ ¯ � x�« ����A ¯l°Å�� CD@C � ¡-C�C �O�¦� Eu¡0B � ¡-C �¦� ´=@ � � � «#x�« A ¯ � x�« á ¯ ¯ ��� � «�x�« A ¯ ¯ ��� � «�x�« á ¯ ¯l° ? �¦¢=� @�C �O�����¦� ¡u¤ �¦¢ @3¡0G�Eu¡0B6J=C �O�¦�� ¡ ¥ � C � @#G @ ��� ¡iEu¡0C G � » � � � > ër�2ë� �½���^� C � ¡-Ch� � «&|6¯ � |P� � °i¸=� G½C � @,GDE � GD@qJ �§¢ C �O���5� ¡ � @ ² @ � ¡ ¾M@� � , Z � C � � � , � � � C ° ¡ ¢=£9� � ,U! � C � � � , � � � C °5�o�<�=� C � @¬CDGD¡ ¢=� ¶ � G Eu¡0C �¦�q¢ ���W � � Eu¡0B �|> � \C ��> ër�%ë� ¡ ¢=£û� ¡ � C � @�B=G � B�@#G½Cª¥ÈC � ¡0C¬¡ £O£A� C �¦�q¢ ¡ ¢�£ E � ¤§C � BO¤ �¦� ¡-C �§�M¢&�§¢ C � @�´=@,¤ £ ¡0GD@X© �=� C¿¡ £O£A� C �¦�q¢ ¡ ¢=£E � ¤ÍC � BO¤ ��� ¡-C �§�M¢�� ¶7Eu¡0C G �¦� @ ��-��o�=�¦� GD@,B=G @ � @ ¢ C^¡-C �§�M¢È«Ê� ¶ �&F¼¥ � � ¯o� ¡ ¢ F�@: �O� C @ �=� @+¶ � ¤6¡-CoC � E¿@ �#°

î¿|#{|� ���¬�����3`����+�x���

Å�� CX¡q¤§¤%C � @ £ @ �D� G � BAC �§�M¢=� ¡0F � ¾q@ ² @,GD@ �¦¢ C @ ¢=£ @ £ C � F�@ �+� E¿BO¤§@,C @ °:�o� @ ��£ @3¡ ��� C � ¤ ��� CI¶�¡ � C � C � ¡0C « ¡ ¯ ¡0GD@C G � @X¡ ¢=£�« F ¯ ¡0GD@�¡ � � � E¿@ £ C � F�@�C G � @ �§¢ C �O���o�+�q� G � @ °�Ý�� B�@,¶ � ¤§¤¦¥ ² @ ² �q¢�³ C ��� @ � C �Aí C � ¡0C ����¢O� C �¦¢ C � @ � @¢O� C @ � · F � C � ¶ ² @ £A� ² @ ² � ¤¦¤OCDG ¥5C � Eu¡ º @d@+»ABO¤ �¦�,� C ¢=� C @ � ¶�C �O��� ¤�¡-CD@,G °7ê ¶U¥ �M� ¡0GD@dBO¤¦¡ ¢O¢O�¦¢O¨ C � ¤§@3¡0G ¢ ¶ÊG � EC �=�¦��� ¤¦¡ � � ¥ �M�x� �O�q� ¤ £ @ � C � @#G « ¡ ¯ F�@ �+� E¬B=¤§@,C @,¤¦¥ �,� E¬¶ � G CD¡qFO¤§@ ² � C � ¡ �D�½� E �¦¢O¨ C � @�¶�¡ � C ��� CD¡0C @ £ J � G « F ¯ G @3¡ £¡0B=BOG � BOG � ¡0C @Ä¡q¤ ¨ @,FOG^¡dCD@+»<C � C � GD@,¾ � @ ² C � @oE¿¡0C @#G � ¡0¤ �q¢ ´=@,¤ £O� ¡ ¢=£ ¤ �§¢ @#¡0G�¡q¤ ¨ @,FOG^¡ ° ? � E¿@ÄGD@ �,� E¿E¿@ ¢=£ ¡-C �¦�q¢��« C �O��� E¿¡ ¥�F�@¿@+»AB=¡ ¢�£ @ £ ¤�¡-CD@,G ¯��¦¢=� ¤ �=£ @xC � @xC @+»<C�F<¥ å���£ ¤Ë¡ ¢=£ÈÅ @ �¦£ @#G @ � C C @#G �M¢ ´ ¢O� C @¬´=@#¤ £=� ß Lqì-â�¡ ¢=£ F<¥Á ¡ �,å ¡ ¢ @�¡ ¢=£ è � G º<�O�0í�M¢ ¡q¤ ¨ @,FOG^¡ �§¢�¨ @ ¢ @,G^¡0¤�ßëà æ â °

Å�� CD@ �d�M¢Àç ¤ ¨ @,FOG^¡-µªKJL

Page 27: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� ��������� �

������������������ ��!#"%$&��')(+*�!,�-��.%/%'0!#�1��*2!3�&45�6.7�1*7�98:"%;<�=� > ?<@#BAC @#E5F�@,G:N KAJOK0LMLONPRQ%SUT�VXW=Q��

[6\^],_1`AaD\+a,bdceMf#gA`ih�`=fMe-j h�],alk�m^\#b � alk�e0jhAg=e#g=fqeqf0k

�7�<£ ¡ ¥ ² @ ² � ¤¦¤7C^¡0¤ º ¡0F �q� C Ý ¡qE¬E �¦¢O¨)�,�A£ @ � ¡ ¢=£ C � @ Ý ¡qE¿E �¦¢O¨ F �M�O¢=£U°�êø¢È� G £ @,G�C � C^¡0¤ º ¡0F �q� C Ý ¡qExµE �§¢=¨=³ �:�+�A£ @ � J ² @ ² � ¤¦¤ £ @,´ ¢ @u¤ �§¢ @#¡0G �+�A£ @ �#°��o� @R¤¦@ � C � GD@R¡0¤ �½��,�q¢ CD¡ �§¢ @ £ E¿¡0C @#G � ¡0¤ �M¢û�½� E¬@uF�¡ � �¦� ¡ ¢=£¤ �§¢ @3¡0G�¡q¤ ¨ @,FOG^¡OJ ² �O���^�)����£ @,¶Ê@,GDG @ £ C � ¡ � @,B�¡0G^¡-C @ � ¡ ¢=£A�M� C °

ìu|#{ � �#������~ � �R�i���

�o� @#G @X¡0GD@�Eu¡ ¢ ¥ ² ¡ ¥ � C �¬� B�@ �+� ´=¥�¡ �+�A£ @ ¨q� ¾q@ ¢��M� Go@ � CD¡0F=¤ ���½� @ £ ¶ � G Eu¡q¤ ��� E �#°·Ã�¢ @ �,�q¢ ¾q@ ¢O� @ ¢ C ² ¡ ¥ �¦� C �¨q� ¾q@x¡ ¢ @ ¢=�+�A£A�¦¢O¨ ¶ �O¢�� C �¦�q¢ J�C � @#G @#F¼¥ � B�@ �+� ¶Ê¥ �¦¢O¨)�O� ² C �)� G @3¡-CD@5¡0GDF � C G^¡0GD¥ �+�A£ @ ² � G £=�,°��o�=�¦��¨ @ ¢ @,G^¡0¤ �T� @ £Eu¡0BOB �§¢O¨)� ¡ ¢ F�@ ��� @ £ C ��£ @ � G � F�@ � ¤�¡ �D� @ �d� ¶ �,�<£ @ ���¦¢ ¡ � �=�#�+�¦¢=� CIE¿¡ ¢O¢ @#G °�¸=� G�¡ � B�@ �,� ¡q¤ � ¤�¡ �D��� ¶ �+�A£ @ �� ¡q¤§¤¦@ £Èy kzj�\De0ax]^w#fM\�I J � C � @#G �½���,�+�¦¢=� C � BAC �§�M¢=� ¡0GD@I¡ ¾-¡ � ¤�¡0FO¤¦@ °�± @ ² � ¤¦¤ £ @,´ ¢ @XC � @ � @ �+�A£ @ ��� @,GD@ °å��¦¢ @3¡0G �+�A£ @ � ¡0GD@ � FOCD¡ �¦¢ @ £ ² � @ ¢ C � @:¡0¤¦B � ¡0F�@+CJÝ ��� ¡ �D� �<�,� ¡0C @ £ ² � C � C � @�´=@#¤ £@> ð ¶ � G � � E¿@X´ ¢O� C @$" °�êø¢� �=�^�i� ¡ � @ � J �M¢ @ � ¡ ¢ C �O�¦¢OºÀ� ¶%C � @ Æ ¡0ExF � @ ¢ C � B=¡ � @ Çi« Ý ® ¯ J ² �O���^��+�q¢ C^¡ �¦¢=� C � @ �+�A£ @ ² � G £O� ¡ ¢=£ G @ � @ � ¾M@ £² � G £O� JA¡ � ¡x¾M@ � C � G � B=¡ � @ °� @ � ¡0¤¦¤<C � ¡-C x â > ® ð ��� ¡ yÍkzj�\^e-a�Il`=m�I�NOeM]D\%� ¶�C � @o¾q@ � C � G � B=¡ � @ > ® ð � ¶�¶ � G�@#¾q@,GD¥�B=¡ � G | X½>µ� x ¡ ¢�£ �µ� > ð J � C��� C � @ � ¡ � @�C � ¡-C | �I>µ� x ¡ ¢=£ �Ù� | � x�°�«�Ý @,GD@Ù� ��� ¾M@ � C � G�¡ £O£A� C �¦�q¢ ¡ ¢=£ � �����D� ¡0¤�¡0G µ ¾q@ � C � G�E � ¤§C � BO¤ ��� ¡0C �¦�q¢�°?<B�@ �,� ´ � ¡0¤¦¤§¥MJ � ¶ | ���E� ( Xi&�&i&¨X�� ® � ¡ ¢=£ >|���E¦ ( X�&i&i&ZX�¦ ® � JËC � @ ¢d| � >ç���E� ( �Ѧ ( Xi&�&i& X�� ® �Ѧ ® � ¡ ¢=£��� | ���&� ��� ( Xi&�&i&¨X����i� ® � °ë¯±Þ� @ ¢ ¡ �,�<£ @ \ â > ® ð���� ¡¬¤ �§¢ @3¡0G � � F � B=¡ � @ � ¶ > ® ð JAC � @ ¢ C � @ �,�<£ @ ���d� ¡q¤§¤¦@ £ ¡ y kzj�\De0a5]^w#fM\+°·Å�� C^¡-C �¦�q¢ ¡0¤¦¤§¥MJ² @)@,»<B=G @ � � C � @)¶�¡ � C¿C � ¡0C¿¡ ¢þ«±§ X�+�X ò<¯ ð �+�A£ @ ��� ¤ �¦¢ @#¡qG¬F<¥ �=� �¦¢O¨Ì�  � ¡0GD@RFOG^¡ �^º @+C � ¡ ¢=£ £ @ ¢O� C �§¢=¨È� C¿¡ ¢ß § X�+�X ò â ð �+�A£ @ °

ÚoнÏËÐ½Ï ôÞØ6Ô�Ø�ÖOÓ%Ò{�ËÖÑ� Ó%ÒAÖ2�*� Ó�Ô�Õ���Ó%Ö �øÒ�ÛùÚ Ü�Ø6Ú�× ��Ó%Ò<Ö �9�å��¦¢ @3¡0G:¡0¤ ¨ @#FOG^¡ ¨q� ¾q@ �I�=�:� @,¾q@#GD¡q¤ � �=�#�+�¦¢=� C ² ¡ ¥ ��� ¶ÄGD@,BOGD@ � @ ¢ C �§¢O¨��+�A£ @ �,°o� @ � ¡q¤§¤�C � ¡-C5¡À¤ �§¢ @3¡0G � � F � B=¡ � @\ â > ® ð � ¶ £A� E¿@ ¢=� �§�M¢ + � ¡ ¢ F�@ � B�@ �+� ´=@ £ F¼¥ ¨M� ¾ �¦¢O¨ ¡&F�¡ � �¦� ¶ � GRC � @ �½� F � B=¡ � @MJ �1° @ ° J�F<¥ ¨q� ¾ �¦¢O¨ ¡ ¢

æ µªKMà

Page 28: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

�¦¢=£ @,B�@ ¢�£ @ ¢ C � @,C � ¶7¾M@ � C � G � | ( Xi&�&i&¨X | ë â > ® ð � �=�^� C � ¡-C \ � }�[ ë� ° ( � � � | � �Á� ( Xi&�&i& X�� ë � > ð � °�Å�� CD@ �¦¢B=¡qG½C �¦�,� ¤¦¡qG·C � ¡-C�C � @ �,�A£ @ � ¡ � "�ë�¾M@ � C � G � ¡ ¢=£�� � ² @X¡0GD@ ¢O� Co¡qF �=� �§¢O¨¬¢O� CD¡-C �§�M¢�� @#G @�F<¥ �=�½�¦¢O¨ +¿C � E¿@#¡ ¢C ² �¿£O�Íí @,GD@ ¢ CdC �=�§¢O¨¼� ·�C � @ £A� E¿@ ¢=�½�¦�q¢�£A� @ � @# � ¡0¤�C � @�E¿@ �D� ¡ ¨ @I¤§@ ¢O¨ C ��°ä�� �¦¢O¨ Eu¡-CDG � » ¢O� C^¡-C �§�M¢ J ² @ � ¡ ¢ C �<�=� G @#BOGD@ � @ ¢ C�C � @ �,�A£ @ \ F<¥i¡ dM\,j�\,a e-_øw-afaue-_úalkòs � � > ër� ®ð J ² � @,GD@C � @5G � ² �d� ¶W� ¡qG @XC � @5F=¡ �½��� ¾M@ � C � G ��| ( Xi&�&i&¨X | ë °5«��o� G �q�=¨q�O�M� C�C �=�¦�I�+�M� G � @ ² @ ² � ¤§¤ £ @ ¢=� C @5¾q@ � C � G � F<¥G � ² ¾q@ � C � G � J �O¢ ¤¦@ �D�d� C � @,G ² ��� @ � B�@ �+� ´=@ £U°ë¯xêø¢ C �O���d¢O� CD¡-C �§�M¢ J \ � } ���r�Á�µ� > ëð � °ç�¢=� C � @,G ² ¡ ¥ � ¶ £ @ �D� G � F �§¢=¨ ¡)¤ �¦¢ @3¡0G �½� F � B=¡ � @ �¦� F<¥i@ ¢<� E¿@#GD¡0C �¦¢O¨ C � @ �+�q¢�� CDGD¡ �§¢ C � C � ¡-CX¾q@ � C � G ���§¢ C � @� � F � B=¡ � @ � F�@,¥qJ � G�@# �O� ¾ ¡q¤§@ ¢ C ¤¦¥qJ=F<¥ £ @ �D� G � F �§¢=¨R� C � Æ ¢¼� ¤§¤ � B=¡ � @ ÇO°o¸O� G | X½> � > ® ð J�¤§@,C � | X > � � [ ®� ° ( � � �¦ � ² � @,GD@uC � @RE � ¤§C � BO¤ �¦� ¡-C �§�M¢=� ¡ ¢=£&� � E¿E¿¡0C �¦�q¢&£ @ ¢O� CD@u´=@#¤ £û� B�@#GD¡0C �¦�q¢=�#°P� @ � ¡0¤¦¤ËC � ¡-C5¶ � G5@#¾q@,GD¥�¤ �¦¢ @#¡qG� � F � B=¡ � @ \ � ¶ £A� E¬@ ¢=� �§�M¢ +�J �q¢ @ � ¡ ¢ ´ ¢=£ ¡R¤ �§¢ @#¡0G � � F � B=¡ � @qJ £ @ ¢=� C @ £�\ ~ J � ¶ £A� E¬@ ¢=� �§�M¢6§ !�+�J � �=�^�C � ¡-C5¶ � G5@#¾q@,GD¥ | � \ ¡ ¢=£ >|� \�~ J^� | X½> � ��L °å @+C ô?¡ � > � ® ��ë �B� ®ð F�@RC � @ ¨ @ ¢ @#GD¡0C � G:Eu¡-C G � »È¶ � G\�~o°¬�o� @¿E¿¡0C G � » ô � > ® �~� ® �¨ë$�ð �¦�X� ¡q¤§¤¦@ £ C � @ N=e-alkz_úp�]Dg=\^]tð¥a¿e0_1alkòs¿� ¶ \¬°xÅ�� CD@xC � ¡-C �M¢ @ � ¡ ¢ @+»ABOGD@ �D�\ � } >µ�-> ô � ¨ � °Å�� C @xC � ¡0C �O¢=£ @#GIF � C � GD@,BOGD@ � @ ¢ C^¡-C �¦�q¢�� J ² @ � ¡ ¢È� �O� ² C G � ¾ � ¡0¤¦¤¦¥�C � ¡0C�C � @¬L ² � G £i�¦� ¡ �+�A£ @ ² � G £ ¶ � GI¡q¤§¤¤ �§¢ @3¡0G �,�<£ @ �#°%± @ ² � ¤§¤�GD@+C � G ¢ C � C �O��� ¶�¡ � Cd¤¦¡0C @,G �M¢�°è � C � C � @ ¨ @ ¢ @#GD¡0C � GxEu¡-C G � » ¡ ¢=£ C � @�B=¡qG � Cª¥ �^� @ �^º Eu¡-CDG � »&G @#BOGD@ � @ ¢ CD¡0C �¦�q¢=�5¨q� ¾q@)¡ ¢ I «E§ > ¤ �q¨ " ¯x�½��� @ £GD@,BOGD@ � @ ¢ CD¡0C �¦�q¢R� ¶6C � @ �+�A£ @ \¬°Ë�o� @ � @IG @#BOGD@ � @ ¢ CD¡0C �¦�q¢=� CD¡ º @XB � ¤§¥ «E§ ¤ �M¨ " ¯ F � C � C �¿£ @ � � G � F�@�¡ ¢=£ ¡qG @�C �<�=�¶�¡ � GD¤§¥ �,� E¿B=¡ � C °¸O� G½C � @,GDE � GD@xC � @ � @¿G @#BOGD@ � @ ¢ CD¡0C �¦�q¢=� ¡0GD@¬@# �O� ¾ ¡q¤§@ ¢ C �+� E¿B � CD¡-C �§�M¢ ¡0¤¦¤¦¥ °¿±Þ� C �û�½� E¬@¿G �=£A� E¿@ ¢ CD¡qG ¥¤ �¦¢ @#¡qG¡0¤ ¨ @#FOG^¡OJ ² @ � ¡ ¢È� �O� ² C � ¡-CXB=¡0G � Cª¥ �^� @ �^º Eu¡-CDG ��� @ � ¡ ¢=£È¨ @ ¢ @,G^¡-C � G�Eu¡-CDG ���+� @ � ¡qG @x@ �D� @ ¢ C � ¡q¤§¤¦¥�C � @ � ¡0E¿@ °�o� ¡0C �¦� J ¨q� ¾q@ ¢@¢ ² @ � ¡ ¢��+� E¿B � C @ 7 ¡ ¢=£À¨q� ¾q@ ¢�7 ² @ � ¡ ¢��+� E¬B � C @ ¢¿°ç ¤§C �=�q�O¨M� ² @ � ¡ ¾M@ � �O� ² ¢ C � ¡0C ¨ @ ¢ @,G^¡-C � Gd¡ ¢=£ B=¡qG � Cª¥ �^� @ �^º Eu¡-CDG ��� @ � ¡0GD@X@# �O� ¾ ¡q¤§@ ¢ C �§¢ F � C � ¡¬Eu¡-C � @+µEu¡-C �¦� ¡0¤�¡ ¢=£È�+� E¿B � CD¡-C �§�M¢ ¡0¤ � @ ¢=� @qJ £A� C � @#¥ ² � G ºÀ�§¢ C � @ � ¡0E¿@5Eu¡ ¢=¢ @,Glã ç�� ² @ ² � ¤§¤ � @,@qJ�B=¡qG � Cª¥ �^� @ �^ºEu¡-CDG ��� @ �o� ¡ ¾q@ �½� E¿@IB=G � B�@#G½C � @ � C � ¡0C�¡0GD@�¾M@,GD¥ �=� @+¶ � ¤ °

ÚoнÏËÐ1ÿ �4�������½Ú�Ó%Ò%�*�·Ô�Û��ËÙuÒ%Ü�Ø,��Ó�Ö2�ªÒ�ÛùÚ2Ü�Ø6ÚW×���Ó7ÒAÖ2�*�0 �3�-����£D.%;M!3;<'0!#�1��*���? � BOB �M� @ ² @À¡0GD@ ¨q� ¾q@ ¢ ¡GD@ � @ � ¾q@ £ ¾q@ � C � G5> � FAC^¡ �¦¢ @ £ ¶ÊG � E C � @)C G^¡ ¢=� E �¦�D� �§�M¢û� ¶¡ �+�A£ @ ² � G £ ¶ÊG � E ¡ �+�A£ @ � ¶IE �§¢O� E � E £A��� C^¡ ¢=� @ ò�°s¸=� G C � @#G#J �½� B=B �¼� @)C � ¡0C ² @�¡0GD@ ¨M� ¡0G^¡ ¢ CD@,@ £ C � ¡0CC � ¡-C ò !2N � Gd¶Ê@ ² @#G�@,GDG � G �o� ¡ ¾q@ �A�,�,� G GD@ £�°Äç�� ² @ ¢=� C @ £ @#¡qG ¤ � @#G#J � C ��� B �M�D� � FO¤¦@�C � C @,¤¦¤úJ ¨M� ¾M@ ¢��O¢ ¤ � E � C @ £�+� E¿B � CD¡0C �¦�q¢ ¡q¤UG @ �½�M� G � @ � J � ¶�¡ ¢ @,GDG � G � ¡ �o�A�,�,� G @ £�� G ¢O� C °Ä® ¡ ¢ ² @ £A� C �=�¦���,� E¿B � C^¡-C �§�M¢ @ ¹u�,� @ ¢ C ¤¦¥Aã ê CC � G ¢=���q� C�C � ¡-CIC � @¬¡ ¢=� ² @#G#J=¶ � GI¤ �¦¢ @3¡0G �,�A£ @ �7\ ¨q� ¾q@ ¢ F<¥)C � @ � GIB=¡0G � Cª¥ �^� @ �^º Eu¡-CDG � » ô J ��� Æ ÜX­ ? Ç2-=± @� � E¿BO¤¦¥ �+� E¿B � C @dC � @�¾M@ � C � G·> ô9°%ê ¶UC � @�GD@ � � ¤§C ��� C � @�¡q¤§¤ � @,G � @ � ¾q@ � C � G#JqC � @ ¢ > ��� ¡ �,�A£ @ ² � G £ ¡ ¢=£¿� @ ¢=� @¢O� @,GDG � G �d�A�#�+� GDG @ £i£A� G �§¢=¨ C G^¡ ¢�� E ��� � �§�M¢�°�ê ¶Ä> ô 3� ¨ J�C � @ ¢ > �¦�I¢O� CI¡ �,�A£ @ ² � G £ J�F¼¥ÀC � @ £ @,´ ¢O� C �¦�q¢È� ¶C � @xB=¡qG � Cª¥ �^� @ �^º Eu¡-C G � » °I�o�<�=� ² @ �,�q¢=� ¤ ��£ @:C � ¡-CI@,GDG � G½µ £ @+CD@ � C �¦�q¢��¦� Æ @3¡ � ¥ Çi«Ê�¦¢ B � ¤¦¥ ¢=� E � ¡q¤6C � E¿@ ¯ ¶ � G¤ �§¢ @3¡0G �,�<£ @ �#°ç�¢=� C � @,G ¢=�¦� @�BOG � B�@,G Cª¥ � ¶�B�¡0G � Cª¥ �^� @ �^º Eu¡-C G ���+� @ ����� C � ¡-CÄC � @#¥ ¨M� ¾M@�¡ � @ ¢=� @ � ¶�C � @�E �§¢=� E � E £A�¦� CD¡ ¢=� @ � ¶¡ �+�A£ @ °�Ã�¢ @ � E¿B � G½C^¡ ¢ C� � @ � C �¦�q¢���� C � ¡0C � ¶ �O� ²þ² @ � ¡ ¢i£ @+CD@,GDE �§¢ @XC � @:E �¦¢O� E � E £A�¦� CD¡ ¢=� @ � ¶�¡¿¤ �¦¢ @#¡qG�+�A£ @ °¬ä�¢ ¶ � G C �=¢ ¡-CD@,¤¦¥qJ�C � @,GD@u¡0GD@ ¢=�Àº<¢O� ² ¢ @ ¹R�+� @ ¢ C:E¿@+C �O�A£O�X� ¶ �+� E¬B � C �¦¢O¨ C �O��� ·�¡ ¢=£ C � @uBOG � FO¤¦@,E����º<¢O� ² ¢ C � F�@ Å�öþ� ¡qG £ ßÍNMN#ì<J6K0é-â °:Å @,¾q@#G½C � @,¤¦@ �D� B=¡0G � Cª¥ �^� @ �^º Eu¡-C G ���+� @ ���0í @,G �½� E¿@x¡ ��£�¦¢9£ @ � �§¨M¢O�¦¢O¨�+�A£ @ � ² � C � GD@#¡ � �q¢ ¡0FO¤¦@XE �¦¢O� E � E £A��� C^¡ ¢=� @:¡ � ² @ ² � ¤§¤ � @#@ �½�O� G½CD¤§¥ °Ä¸%� G � C#J ² @ £A�¦¨ GD@ �D�d�¦¢À� G £ @,GoC �)£ @+´ ¢ @¡ ¢ @ ² �+�M¢=� @#BAC#J<C � @ o5e�aQa¬kzj�d Y \,kòd3gA_d� ¶%¡ �,�A£ @ ² � G £U°

A ;@B�*%�Ê!#�1��*Ñæ6�EC e�gO\:Ý ¡0E¿E �§¢=¨ ² @ �§¨M� C w*hIe$b-\^]+_øw-a�| � > ® ð KËfq\,j�w0_ \^f ² C «&|6¯gK�kOI�_zg=\�j=`{aumD\,a�w*h�j�w0j2�Dá3\+aDwæ µªK0ì

Page 29: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

]^w#w0a f-kzj�e-_ø\�I:kzjG|�RÅ�� ² J �§¢9� G £ @#GXC � ´ ¢=£ C � @uE �¦¢O� E � E £A��� C^¡ ¢=� @ � ¶d¡)¤ �¦¢ @#¡qG �+�A£ @qJ ² @ � ¡ ¢ ´ ¢=£ ¡ ¢O�q¢ µ � @#G ���+�A£ @ ² � G £�|� ¶ � Eu¡0¤¦¤¦@ � C ² @ �¦¨q� C � �=�^� C � ¡0C | � ô � ¨�°5�o� @ ² @ �¦¨q� C � ¶ËC �=�¦���,�<£ @ ² � G £ J ² C «�|6¯ J6@# � ¡q¤ � C � @xE �¦¢O� E � E£A��� C^¡ ¢=� @ � ¶%C � @ �,�<£ @ °�± @ � ¡ ¢ BOG � ¾q@�C �O��� ¡ � � @,G C �¦�q¢)�=�½�¦¢O¨ @,¤¦@,E¿@ ¢ C^¡0GD¥u¤ �¦¢ @3¡0G�¡0¤ ¨ @#FOG^¡ °

' �-�21Ä� å3�Ê!3����*ãæ6�Om e�gO\£a¬kzj=k¼a¬`{aùf-kOIl_øe-j�]^\�w�h�exy kzj�\^e0aX]^w3fq\�\ Y kz_ÊgJNOe0alkz_1pu]^gO\^]tð£ô \��+`=e0y¿I�_ÊgO\�I�a¿e0yzy§\�Il_kzj=_ø\<dM\,a�ò6I^`=]^gÀ_ÊgOe0_Ä_ÊgO\,a \¬\�sMkOIl_TòÈa w Y I5w�hô _zg=e-_de-a \5y kzj�\^e0aly p)fq\9N=\+j�fq\,j=_9R' �-���)( ¸%� G � C#J ¢O� CD@�C � ¡0C�C � @5BOG � B �M� � C �¦�q¢i��� @# �O� ¾-¡0¤¦@ ¢ C�C � C � @x¡ �D� @,G C �¦�q¢ C � ¡0C�C � @5E �¦¢O� E � E £A��� C^¡ ¢=� @� ¶ \ @# � ¡q¤ � C � @ ² @ �¦¨q� C � ¶�C � @ ¢O�M¢ µ � @,G � ¾q@ � C � G |i� ¶ � Eu¡q¤§¤¦@ � C ² @ �¦¨q� C�C � ¡0C � ¡-C ��� ´=@ �4| ô � ¨�°��6�:� @,@�C �O��� J¤¦@+C�" � £ @ ¢O� C @IC � @J�1C � G � ² � ¶ ô9°�Å�� ² �½� BOB �¼� @ | ô � ¨ ¡ ¢=£ ¤§@,C� � , Xi&�&i& X�� �7¤ F�@XC � @ ¢=�q¢ µ � @#G � @,¤¦@,E¿@ ¢ C �� ¶ |�°:�o� @ ¢ [a&% ° ( � �14 " �54 � ¨ ¡ ¢=£ C �<�=� C � @¬G � ² � " �7, Xi&i&�&¨X " �6¤ ¡0GD@5¤ �§¢ @3¡0GD¤§¥ £ @#B�@ ¢=£ @ ¢ C ° ? � E � ¤�¡0GD¤§¥¡ ¢ ¥�+� ¤§¤¦@ � C �¦�q¢À� ¶ ò ¤ �¦¢ @3¡0GD¤§¥ £ @,B�@ ¢=£ @ ¢ C�G � ² � ¤¦@#¡ £ C � ¡¬¾M@ � C � G |Ì� ¶ ² @ �§¨M� C òR� �=�^� C � ¡0C | ô � ¨6°Å�� ² ² @¿C � G ¢ C ��½�=� ² �§¢O¨ C � ¡-C:E �¦¢¦¥�§ ï°�¨r© §�ª °�¨�« } ² C «�|6¯ � �¦� C � @RE �¦¢O� E � E £A�¦� CD¡ ¢=� @ � ¶ÄC � @ �+�A£ @ °�¸%� G � C¢O� C @IC � ¡0C � ¶ | ô � ¨ J<C � @ ¢�� C � ² @ �§¨M� C ��� ¡ ¢À� BOB�@,GdF �q�=¢=£À�q¢ C � @�E �¦¢O� E � E £O�¦� CD¡ ¢=� @ � �§¢�� @ � C �d£A��� C^¡ ¢=� @¶ÊG � E ¨û« ² �O���^�)��� ¡0¤ � � ¡ �,�<£ @ ² � G £=¯Ë��� ² C «�|6¯l°oÃ�¢ C � @ � C � @,G � ¡ ¢=£ C �O���  � ¡ ¢ C � Cª¥�¡q¤ � � ¤ � ² @,GoF �q�O¢�£O� C � @E �§¢=� E � E £O�¦� CD¡ ¢=� @ ÷:ê ¶d> ¡ ¢=£C� ¡0GD@¿C � @ ¢ @#¡qG @ � C:B=¡ � G � ¶ �,�A£ @ ² � G £O� J�C � @ ¢ C � @�¾q@ � C � G | �Î>w! ���¦� ¡�+�A£ @ ² � G £ ² �O�M� @ Ý ¡qE¬E �¦¢O¨ ² @ �¦¨q� Cd@# � ¡0¤ � C � @ Ý ¡0E¿E �§¢=¨R£A�¦� CD¡ ¢=� @XF�@+C ² @,@ ¢ >û¡ ¢=£ �O°ÚoнÏËÐLÚ ÑÙÛ�ÛqÒAØZ��Ó%Ò%�½Ú¬Ò �dÕ�Ø6Û

¸%�§¢ ¡0¤¦¤§¥ ² @ �¦¢ CDG �A£A��� @�¡ ¢O� C � @#G �½��£ @,µú@ í @ � C � ¶�¤ �¦¢ @3¡0G � Cª¥MJ ² �O�¦�^�À��� C � @ ¢=� C �¦�q¢À� ¶�¡ Ilp�I^_ø\ia¿e0_1k�]¬]^w#fM\+°

A ;@B�*%�Ê!#�1��*Ñæ6��æi� j«±§ X�+�X ò<¯ ð � ¥ � CD@,Eu¡-C �¦�I�+�A£ @ kOI:eR]^w#fM\�kzj Y gAk�]Dgi_zg=\:\,j�]^w#f0kzj�dÀw*h�e�au\�IgI,eid¼\5]^w0j%IlkOIl_EIw*h + a¿\�IgI+e�dM\�Ilp�aumDw0y¿IGh+w-yzy§w Y \^fÀm,pJ§ !v+ ]^gO\^]gð=I^p�aum^w-y¿IiRêø¢¿� C � @,G ² � G £O� J �§¢ ¡ � ¥ � C @#E¿¡0C ��� @ ¢=�,�<£O�§¢O¨ J0C � @dE¿@ �D� ¡ ¨ @ �¦� GD@ �,� ¾q@,G^¡0F=¤§@ ² � C �O�q� C £ @ �+�A£A�¦¢O¨X� ¶�C � @,GD@�¡0GD@ ¢=�@,GDG � G �,° ?<¥ � CD@,Eu¡-C �¦�x�+�A£ @ � ¡qG @:¾M@,GD¥ �+� E¿E �q¢��§¢ BOGD¡ � C �¦� ¡0¤ � E¿BO¤¦@,E¿@ ¢ C^¡-C �¦�q¢���� ¶·@ ¢=�,�A£A�§¢=¨ ¡ ¢�££ @ �,�A£A�§¢=¨�D�^� @,E¿@ �#°�o� @�C @#G E Æ � ¥ � C @,Eu¡0C ���,Ç���� ¶ÊG � E C � @IB=¡0B�@,G � ¶ Ý ¡qE¬E �¦¢O¨ ß á¼ì â °�Ý ¡0E¿E �§¢O¨¬� F � @#G ¾M@ £ C � ¡-C �+�A£ @ �·� FACD¡ �§¢ @ £¶ÊG � E Æ ¤ �§¢ @#¡0G Ç¿� B�@,G^¡-C �§�M¢=��� ¡ ¢ F�@:C � G ¢ @ £i�¦¢ C �)� ¥ � CD@,Eu¡-C �¦�5�q¢ @ � ² � C �O�M� C�¤ �M�D��� ¶ ¨ @ ¢ @,G^¡0¤ � Cª¥ °5«�Ý ¡0E¿E �§¢=¨£A��£u¢O� CÄ@+»ABO¤ ���+� C ¤¦¥ �¦¢ C G �A£A�=� @�¤ �¦¢ @3¡0G �,�A£ @ � JqC �O�q�=¨q� ¤ �§¢ @3¡0G � Cª¥ £A��£ BO¤�¡ ¥¿¡ £A� E �¦¢ ¡ ¢ C�G � ¤§@ �¦¢R�O�����+�A£ @ �#°ë¯:�7�£A�¬�½� J ¢O� C @�C � ¡0C � ¶�C � @ ¨ @ ¢ @,G^¡-C � GËEu¡0C G � »c� ���·� ¶UC � @�¶ � GDE�ß (J�0�Râ ² � @#G @I( ��� C � @7+ ¤ + ��£ @ ¢ C � Cª¥uEu¡-CDG � »UJ¡ ¢�£ � ��� ¡1+ ¤ «E§ !�+ ¯ Eu¡0C G � »UJ�C � @ ¢ C � @ �+�A£ @ ¨ @ ¢ @#GD¡0C @ £ F¼¥�� ����� ¥ � CD@,Eu¡-C �¦�q° ? � ² � ¡0C � ¡ ¢ ² @ £A��� ¶� ����¢O� C � ¶6C �=�¦� ¶ � G ERã ¸O� G �½� E¿BO¤ ���+� Cª¥qJ ² @ £ @ �D� G � F�@IC � @XBOG �A� @ £A� GD@ ² � @ ¢ "J�üKx¡ ¢�£ C � @ �+�A£ @ �¦� F �¦¢ ¡qG ¥ °«��o� @�E¬@,C �O�A£ ¡0¤ � �¬¨ @ ¢ @#GD¡q¤ ��� @ � C �u� C � @,Go´�@,¤ £O�,°ë¯¬¸%� G � C ² @XB�@#G E � C @XC � @ �+� ¤ � E ¢�� ¡ ¢=£ G � ² ��� ¶j�×C � ¤¦¤�C � @¤¦@+¶zC E �¼� Cd@ ¢ CDG ¥ � ¶�C � @X´=G � CoG � ² ��� ¡)N °�«�ö @#G E � C �¦¢O¨ C � @�G � ² �Ä£O� @ �o¢O� C�¡q¤ÍCD@,G�C � @ �,�<£ @qJ ² �O� ¤§@XB�@,GDE � C �§¢=¨C � @ �+� ¤ � E ¢=�d�M¢ ¤¦¥ �^� ¡ ¢O¨ @ � C � @ ¢ ¡qE �¦¢O¨u� ¶7C � @ �+�<� G £A�¦¢ ¡-CD@ �§¢=£O�¦� @ �#° ¯¿Å�� ²þ² @ � ¡ ¢ ¡qG G^¡ ¢O¨ @ � C � � C � ¡-C�¡q¤§¤C � @:¤§@,¶zC E �M� C�@ ¢ CDG ¥ � ¶�¡0¤¦¤�G @#Eu¡ �¦¢O�§¢=¨ G � ² ����� L °·± @ £O�R�½� F<¥ � � FACDGD¡ � C �¦¢O¨ C � @X´=G � C�G � ² ¶ÊG � EZ¡ ¢ ¥ ¨M� ¾M@ ¢G � ² � ¶7C � @�G � ² � ¡ � ¡�N �¦¢ C � @X¤§@,¶zC E �M� C�@ ¢ C GD¥ °�ç�¨ ¡ �¦¢ C �O��� BOG �<� @ �D�o£A� @ ��¢O� C �^� ¡ ¢O¨ @�C � @ �,�A£ @�· � C �q¢ ¤§¥�^� ¡ ¢O¨ @ � C � @¿F=¡ � ��� ² @u¡0GD@ ���½�¦¢O¨ ¶ � GXC � @ �,�A£ @ °�� @,B�@#¡0C �¦¢O¨ C �O��� BOG �A� @ �D� ¶ � GIC � @¬GD@,Eu¡ �§¢O�¦¢O¨À�§¢�£A�¦� @ � J ² @¡0GDG � ¾M@I¡0Cd¡ ¨ @ ¢ @#GD¡0C � GoEu¡-CDG � » ² � C � ¡ ¢À��£ @ ¢ C � Cª¥�Eu¡0C G � » �¦¢ C � @�¤¦@+¶zC�B�¡0G C�µ�¡ �d£ @ �½� G @ £U°± @ �+�q¢�� ¤ �=£ @IC � ¡0C�@,¾M@,GD¥u¤ �¦¢ @#¡qG �+�A£ @ ���d� ¥ � C @#E¿¡0C ���0°Ë�o� @ �,�q¢ ¾q@#G � @ ¢ @,@ £)¢O� C�F�@XCDG � @ °

æ µªK0é

Page 30: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ìu|lî ¬ �:ñ ñ��,��� �����i���

�o� @iEu¡ �^�=�§¢ @#G ¥ � ¶X¤ �¦¢ @#¡qG �+�A£ @ �R£ @,¾M@,¤ � B�@ £ ¡0F � ¾q@i¡0¤¦¤ � ² �¿�=� C � ¡qG G � ¾q@�¡-CuC � @ Ý ¡0E¿E �¦¢O¨&�+�A£ @ � ² � C �E �§¢=� E � E £A��� C^¡ ¢=� @ ò � æ ¢ ¡0C � G^¡0¤¦¤¦¥ °%êø¢R� G £ @,G·C �¬£ @ �D� G � F�@�C � @ � @ �+�A£ @ � J ² @ �+�q¢�� CDG �=� CËC � @ � G�B�¡0G � Cª¥ �^� @ �^ºEu¡-CDG � » ô9°¸O� G � � E¿BO¤ �¦�,� Cª¥MJ ² @ ² � ¤§¤ �+�q¢�� CDG �=� C�C � @:Eu¡-C G � » � ¾q@#GoC � @¬¡0¤¦B � ¡qF�@,CuÝÑ� } L2X,N�� °·�o�O��� B � C ���=�d�¦¢ C � @:´=@,¤ £> > J ² � @,GD@IC � @:¡ £O£A� C �¦�q¢ ¡ ¢=£ E � ¤ÍC � B=¤ ��� ¡0C �¦�q¢À� B�@,G^¡-C �¦�q¢�� ¡0GD@·© �=� C�¡0G � C � E¿@+C �¦� E �A£A� ¤ � K °Å�� C ��� @ �q� G ¨q� ¡0¤ �¦� C �¬�,�q¢=� C G �=� Cd¡:Eu¡0C G � » ô � > ® �)� ® �¨ëk�ð �½�=�^� C � ¡0C | ô 3� ¨ ¶ � Go¡ ¢ ¥¬¾M@ � C � G |�� ¶ ² @ �¦¨q� CN � G:K °�«��o� @ ¢ C � @ �+�A£ @ ² � ¤§¤ � ¡ ¾M@ £O�¦� CD¡ ¢=� @�+ æ °x± @ ² � ¤§¤ £O�À� � ¶ � G�¡ � ¤�¡0G ¨ @¿¡ ¢6§ ¡ � B �M�D�½� FO¤¦@qJ ¨M� ¾M@ ¢¡¿´O»A@ £�^�O�q��� @ � ¶ � § !?+ °�. @ ¢O� CD@5F<¥À" � C � @��úC � G � ² � ¶�C �O��� Eu¡-CDG � » °�± @ ² � ¤¦¤6´�G � C £ @,C @#G E �¦¢ @ ² � ¡0C�+�M¢=£A� C �¦�q¢=� " � E ��� C � ¡-C �¦� ¶Ê¥ °¸%� G � C#J �+�M¢=� �¦£ @#G%¡�¾q@ � C � G |�� ¶ ² @ �¦¨q� CÄN ° ?O¡ ¥�C �O��� ¾M@ � C � G � ¡ � ¡5N �¦¢ C � @q�úC � B �M� � C �§�M¢ ¡ ¢�£��¦�U� @,G � @,¤ � @ ² � @#G @ °�o� @ ¢]| ô �ü" � ° ? �¦¢=� @ ² @ £A�q¢6³ C ² ¡ ¢ C | ô C � F�@ � @,G � J<C �=�¦�d� E¿B �¼� @ � C � @ �,�q¢=� C G^¡ �¦¢ CoC � ¡0C�" � � �O�M� ¤ £)¢O� CF�@ � @,G �=°Xê ¶ ô � ¡0C ��� ´=@ � C �O��� BOG � B�@#G½Cª¥MJ�C � @ ¢È� C ¨q� ¾q@ � C � @xB=¡qG � Cª¥ �^� @ �^º Eu¡0C G � » � ¶Ä¡ �,�A£ @ ² � C �Ì£A��� C^¡ ¢=� @+ÞK °Å�� ² J �,�q¢=� ��£ @,G�¡¬¾q@ � C � G |È� ¶ ² @ �¦¨q� C�K ° ?A¡ ¥MJ<C �O��� ¾M@ � C � G � ¡ � ¡)N �¦¢ C � @J�úC � ¡ ¢�£!­ C ���,�<� G £A�§¢ ¡-C @ � ¡ ¢=£)�¦�� @#G � @,¤ � @ ² � @,GD@ °IÝ @,GD@qJ ² @ ¨ @,C#J | ô �É" � �s" % °Iê ¶ËC �O�¦� GD@ � � ¤ÍC �¦� C � F�@ ¢O�M¢ µ � @,G � J ² @ ¢ @,@ £ " � 3�É" % J�¶ � G@,¾M@,GD¥Q� 3� ­�°�± @ �+�M¢=� ¤ �=£ @�C � ¡0C ô���� C � @IB=¡0G � Cª¥ �^� @ �^º Eu¡0C G � » � ¶6¡ �+�A£ @ � ¶�E �§¢=� E � E £A��� C^¡ ¢=� @�+ æ � ¾q@#G> > � ¶�¡ ¢=£)�q¢ ¤¦¥ � ¶�¡q¤§¤ � C � G � ² � ¡0GD@ £A�¦� C �¦¢=� C�¡ ¢=£)¢O�M¢ µ � @,G �=°�o�<�=�Ë� ¶ � § !]+�JqC � @ ¢ C � @�¤�¡0G ¨ @ � C § ² @ � ¡ ¢ ¡0¤¦¤ � ² �¦� C � @ ¢¼� E5F�@,G � ¶ £A�¦� C �¦¢=� C ¢O�M¢ µ � @,G � ¾q@ � C � G � " � � > � > °�o�O���%�¦� ¡ � � E¿BO¤¦@�@ ¢<� E¿@,G^¡-C �§�M¢ BOG � FO¤¦@,E�· C � @#G @�¡0GD@·@,»A¡ � CD¤§¥:K � !uN �½�=�^� ¾q@ � C � G � ¡ ¢=£x�½� ² @ ¨ @+C § �þK � !uN °ä�� �¦¢O¨)�M� GXBOGD@,¾ �§�M�=� ¤§¥ £ @,´ ¢ @ £�¢O� CD¡0C �¦�q¢ J ² @ � ¡ ¢È¢O� ² ¶ � ¤¦¤§¥ � B�@ �,� ¶Ê¥iC � @¿B=¡0G^¡0E¿@,C @,G ��� ¶·C � @ ¨ @ ¢ @,G^¡0¤ �T� @ £Ý ¡qE¿E �¦¢O¨R�,�<£ @ �#÷

' �-�21Ä� å3�Ê!3����*ãæ6�Tõ|n w-ax\ib \,alpuN=w�Ilkz_úk¼b \¬kzj�_ \<d¼\+a| *K·_ÊgO\,a \¿\�sMkOIl_EI5e0j ß K � !2N#X^K � ! !ýN@X æ â > ]^w3fq\�Kd]^e0yzy§\^f�_ÊgO\Ý ¡qE¿E �¦¢O¨R�,�<£ @ RvyÆ��JǼzÉÈ Ê��aÊaË

� . @ � � G � F�@IC � @�B=¡0G^¡0E¿@,C @,G � ¡ ¢=£ B=¡qG � Cª¥ �^� @ �^º Eu¡-C G � » � ¶7C � @$"3µø¡0GD¥ Ý ¡qE¿E �¦¢O¨u�+�A£ @ �,°� . @ � � G � F�@¬C � @ ¨ @ ¢ @,G^¡-C � GXEu¡-C G � » � ¶ÄC � @ Ý ¡0E¿E �§¢O¨�,�A£ @ °uöË� C � C �¦¢û� ¥ � C @,Eu¡0C ��� ¶ � G E�ß (P���uâÄ¡ ¢=££ @ �D� G � F�@IC � @�@ ¢ C G � @ �o� ¶6C � @�Eu¡-CDG � »)� °

�7� Eu¡ º @ � � E¿@ � @ ¢=� @ � ¶ËC � @ ¨ G � ² C �� ¶·B=¡qGD¡qE¬@,C @#G � J ¢=� C ��� @xC � ¡-C � ¶[+�� K � ! !üNqJ�C � @ ¢N �¯® « ¤ �M¨ + ¯l°�o�<�=� C � @ Ý ¡qE¬E �¦¢O¨��+�A£ @ � ¡0GD@ � FACD¡ �§¢ @ £ F<¥5¡0BOB�@ ¢�£A�§¢=¨ ® « ¤ �q¨ + ¯ B�¡0G � Cª¥ �^� @ �^º F � C � C � C � @Z+¼µúF � C�E¿@ �D� ¡ ¨ @ °�o�O����¨q� ¾q@ � ¡ �,�<£ @ � ¶�E �¦¢O� E � E £O�¦� CD¡ ¢=� @ æ J � G�@# �O� ¾-¡0¤¦@ ¢ C ¤¦¥qJM¡5N,µú@#G G � G µ �,� GDG @ � C �§¢O¨��,�A£ @ °��o� @ ¢ @+»<C � @ � C �§�M¢¡ £=£ G @ � � @ � C � @ �¦�D�½� @ � ¶ ² � @,C � @#G �M¢ @ ¢ @#@ £O� C � @,»AB�@ ¢=£� � E �=�^� GD@ £O�O¢=£ ¡ ¢=� ¥)C �À�+� GDGD@ � C �M¢ @:@#G G � G ° è � C´=G � C ² @ £ @ �D� G � F�@�¡ �½� E¿BO¤¦@�@,GDG � G½µ �+� G GD@ � C �¦¢O¨ ¡0¤ ¨q� G � C � E ¶ � GoC � @ Ý ¡0E¿E �¦¢O¨u�+�A£ @ °

ÚoÐ1ÿdÐ½Ï Ü�ÖOÖ2�ËÖL° Ú��·ÖOÖOØ6Ú�Ò%�*�ÄÔ � Ô Ò%Ü�Ø�±þÓ���� � Ô Ú��dÕ�Ø

/I� ¾q@ ¢ ¡xG @ � @ � ¾q@ £ ¾M@ � C � G�>ËJ ² � @#G @I> � | �9;¿¶ � G �½� E¬@ �+�A£ @ ² � G £1| ¡ ¢=£ ¡x¾q@ � C � Gd; � ¶ ² @ �§¨M� C �q¢ @qJ �O� ²� ¡ ¢ ² @ �+� E¬B � C @XC � @�¤ �A� ¡-C �¦�q¢ � � �=�^� C � ¡0C � � � N3ã

æ µ æ L

Page 31: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

�o� @ ¢ ¡ � ¾q@:E¿@+C �O�A£ ¶ � G �+� E¬B � C �¦¢O¨ C �O�¦� ² �q� ¤ £ F�@xF<¥)FOG � CD@�¶ � G � @ °�¸O� G ­ ��N�C �ק J ² @�C GD¥ 3=� B=B �§¢=¨ C � @­ C � F � C � ¶�>&¡ ¢=£�� @#@ � ¶%C �O����¨q� ¾q@ �o�=� ¡ �,�A£ @ ² � G £U°Ë± @ � ¡ ¢i�^� @ �^º)� ¶ � �=�^� ¡u¾q@ � C � Gd> �7�¦� ¡ �,�A£ @ ² � G £ F<¥�+� E¿B � C �¦¢O¨ > �¼ô ¡ ¢=£À�^� @ �^º<�¦¢O¨ C �u� @,@ � ¶ � C �¦��� @,G �=°��o�O���o¨q� ¾q@ � ¡ ¢ I «±§ [ ¯ ¡0¤ ¨q� G � C � E °Ý ¡qE¿E �¦¢O¨ ² ¡ � ¢�³ C � ¡0C ��� ´�@ £ ² � C � C �O�¦� ¡0BOB=G � ¡ �^� ¡ ¢=£X�¦¢=� C @#¡ £ G @#¤ � @ £X�M¢ C � @ÄB=¡0G � Cª¥ �^� @ �^º Eu¡-C G � »�C ���½� E¿BO¤ � ¶Ê¥C �=�¦�Ä�+� E¿B � CD¡-C �§�M¢�° ? �¦¢=� @ ² @ º<¢O� ² C � ¡0C | ô � ¨ J ² @ � ¡ ¾M@oC � ¡0C·> ô � ; ô �Þ" � J ² � @,GD@� �¦� C � @ �§¢=£ @+» � ¶C � @�@#G G � GĤ �A� ¡0C �¦�q¢�°�¸O� G½C � @,GDE � GD@qJ � ¶ ² @I¡0GDGD¡ ¢O¨ @ ô�� � C � ¡-C�C � @��úC � G � ² ���Ä� � E¬B=¤§¥¿C � @ ¢<� ExF�@#G�� ² G � C½C @ ¢�¦¢ F �¦¢ ¡0GD¥qJ�C � @ ¢ C � @5¾M@ � C � G�> ô �½� E¿BO¤§¥ ¨M� ¾M@ � C � @5¤ �A� ¡0C �¦�q¢� ¶�C � @x@,GDG � G �§¢ F �§¢ ¡0GD¥ °��o�=�¦�I� B�@,@ £O��� B �q� G�+� E¿B � CD¡0C �¦�q¢ F<¥)¡x¶�¡ � C � G � ¶ § J ¨M� ¾ �¦¢O¨ ¡ ¢ I «±§ > ¯ ¡0¤ ¨q� G � C � E C �R�+� G GD@ � C�@#G G � G �,°

ìu|�ì ó ���²¬ �:ñ ñ��,���³�Ì�´`i��� �:��� h ��~�ð0�������d�R�i���

êª�d� C ¢ @ � @ �D� ¡0GD¥uC � ¡ £O£ ¤ �M¨ ¡0G � C � E ��� ¡0¤¦¤¦¥REu¡ ¢ ¥RF � C � C �R�+� G GD@ � C�N�@,GDG � G^ã Ý ¡0E¿E �¦¢O¨ BOG � ¾q@ £ C � ¡-CdC �=�¦� ² ¡ �C � @ � BAC � Eu¡0¤UGD@ � � ¤§C�F<¥ �§¢ CDG �A£A�=�,�§¢=¨ ² � ¡-C ���d� ¡0¤¦¤¦@ £ C � @ Ý ¡0E¿E �§¢O¨ F �q�=¢=£U°�± @ ¢O� ² £ @#G � ¾q@IC �O�¦� F �M�O¢=£U°å @,C �=� G @ � ¡0¤¦¤ � � E¿@ ¢O� CD¡-C �§�M¢ ² @ � ¡ ¾q@ �=� @ £ @#¡qG ¤ � @,G °Àå @+C �)« >GX �-¯x£ @ ¢O� CD@uC � @�F=¡0¤¦¤ � ¶�G^¡ £A�¦�=�0� ¡qG �M�O¢=£¾q@ � C � G�> « ² � @#G @Ķ � G�C �O�¦��� @ � C �¦�q¢ C � @d¾M@ � C � G � ² � ¤¦¤AF�@o¶ÊG � E > ®>%¯l°�å @,C � � ¤ «&� X §6¯ � [,�� ° ) � ® ��� F�@�C � @d¾ � ¤ � E¿@� ¶ � �=�^� ¡¬F=¡q¤§¤ °Ë�o� @ Ý ¡qE¿E �¦¢O¨ F �q�O¢�£)¨M� ¾M@ � C � @X¶ � ¤¦¤ � ² �¦¢O¨=÷8:"%;<�=�-;<$ æ6�Oÿ ï±h:e0jÈ«±§ X�+�X ò<¯ > ]^w#fM\¬\tsMkOIl_EIgK�_zg=\+j

K ë � � ¤ ²¶µ ò !ýNK¸· X § ´ � K ® &

' �-���)( å @+C \ � «E§ X�+�X ò¼¯ > �,�<£ @¬¡ ¢=£ ¤¦@+C � ��¹ & � (>Pº °5�o� @ Ý ¡qE¬E �¦¢O¨ F �M�O¢=£��� F=¡ � @ £��q¢ C � @ �½� E¿BO¤¦@� F � @#G ¾-¡-C �§�M¢ C � ¡-C � ¶ | ¡ ¢=£ > ¡0GD@ �,�<£ @ ² � G £O��� ¶ \ J�C � @ ¢ �)«�| X �-¯ ¡ ¢=£��)« >GX �0¯ ¡0GD@ £A��� © �q�¦¢ C ° ? �¦¢=� @» § ^�îI��«�| X �0¯ â } L2X,N�� ® ¡ ¢�£ C � @ � @+C �o�M¢ C � @ å7Ý ?À¡0GD@�¡0¤¦¤ £A��� © �M�§¢ C#J ² @ ¨ @,C ÷ [ § ^�î � �)«�| X �0¯ � � K ® °·�o� @F �q�O¢=£ ¶ � ¤§¤ � ² �o� E¿E¿@ £O� ¡0C @,¤¦¥ °

�o� @ Ý ¡qE¿E �¦¢O¨ F �M�O¢=£Ì¨ @ ¢ @,G^¡0¤ ��� @ ��¢ ¡0C � G^¡0¤¦¤§¥ÀC � "3µø¡0GD¥i¡0¤¦B � ¡qF�@,C �#°xå @,C0� � ¤ ð «�� X §6¯ � [ �� ° ) � ® � � « "$! N ¯ � °�o� @ ¢ ² @ � ¡ ¾q@ ÷8:"%;<�=�-;<$ æ6�¦ çn w0a5\�b-\,alpJ§ X�+�X òÌe0j�f " KÄe0jÈ«E§ X�+�X ò¼¯ ð ]^w#fM\x\tsMkOIl_EI5w-j�y puk h

" ë � � ¤ 𠲶µ ò !sNK¸· X § ´ � " ® &

¸O� GIC � @ � ¡ � @ ò � æ ¡ ¢=£ "×�ÎKOJ�C � @R¡qF � ¾M@xF �q�O¢�£È� ¡ ¥ � C � ¡-C5K@ë «±§ � N ¯�� K ® J7¡ ¢=£ C �O��� F �M�O¢=£Ì�¦� E¿@,C\ts¼eM]+_úy p F¼¥9C � @ Ý ¡qE¬E �¦¢O¨9�+�A£ @ ��« ¡ ¢=£ C �O���¿�¦� CDG � @�¡0¤ � � ¶ � G�"3µø¡0GD¥ Ý ¡0E¿E �¦¢O¨û�+�A£ @ �^¯l°s�o� @ Ý ¡0E¿E �§¢=¨F �q�O¢=£�£ @,´ ¢ @ � ¡ � ¤�¡ �D�Ä� ¶ �,�A£ @ �oº<¢O� ² ¢ ¡ �qN=\+a±h+\^],_d�+�A£ @ �#°A ;@B�*%�Ê!#�1��*Ñæ6���¼� j�«±§ X�+�X ò<¯ ð ]^w#fM\:kOI B�@,G ¶Ê@ � C k h�kz_Ùau\D\,_LII_ÊgO\go5e�aQa¬kzj�dÀm^w-`Aj�f)\�s<eM]+_úy pqb�kERz\�RTK

" ë � � ¤ 𠲶µ ò !sNK¸· X § ´ �ñ" ® &

ç�¢ý�¦¢ CD@,GD@ � C �¦¢O¨ ¶�¡ � C � @#G @ �¦� C � ¡-C � C � @,G¬C � ¡ ¢ C � @ Ý ¡qE¿E �¦¢O¨û�+�A£ @ � ¡ ¢=£ C ² �9� B�@ �,� ´ �)�,�<£ @ � BOG � B �M� @ £F<¥ /I� ¤�¡ ¥ûß æ à#â ¢O�À� C � @,GIB�@#G½¶Ê@ � C �+�A£ @ � @,» �¦� C °:�o�O��� ² ¡ �I�½� B � @ � C @ £ ¶ � GI¤ �q¢=¨ ¡ ¢�£ ´ ¢ ¡q¤§¤¦¥iBOG � ¾q@ £ F<¥i¾ ¡ ¢å��¦¢ C5ßÍNMNaL3â7¡ ¢=£À�o� @,CD¡ ¾-¡ �¦¢ @ ¢ ߧNqN æ â °Ë�o�O��� BOG �<� ¶ �¦� ² ¡ ¥RF�@,¥ �M¢=£ C � @ �D�+� B�@ � ¶7C �O����� ¤¦¡ � �#°

æ µ æ N

Page 32: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

4x��*~}�;¼�3!3��*%�û��.%.ý$ ��*%��$Ì/7$ .7�Lå,!S¡O*%'q;i!3�û;y}�;<*Þ$&��*%��$Ì/7$ .%�Eå#!�¡O*%'q;�o� @ Ý ¡qE¬E �¦¢O¨ F �M�O¢=£:����� ¤¦@#¡qG ¤¦¥ Æ ©ª@,G º ¥ Ç µ � C�BOG � ¾q@ ��¢O� C �O�¦¢O¨I�§¢ C @#G @ � C �§¢=¨ ¶ � G ò �þKAJ F � C�© � E¬B � C � BOG � ¾ �¦¢O¨C � ¡-CdC � @ Ý ¡qE¬E �¦¢O¨u�+�A£ @ � ¶ � G ò � æ ¡qG @XF�@ � C�B �¼� � � F=¤§@ °Ëê C £A� @ �d¢=� C � E¬B=G � ¾M@�¶ � G ò � á¿F � C�C � @ ¢ © � E¿B �¡ ¨ ¡ �¦¢ ² � @ ¢1ò � H °%±Þ� ¥ £A� @ � C �O����£A�¦�D�+�M¢ C �¦¢¼�=� Cª¥ � ¡0B=B�@ ¢ ã êª�Ë� CÄC � ¡-CÄC � @ Ý ¡qE¬E �¦¢O¨ F �q�O¢�£u�¦� C �<� ² @#¡ º J� G ���I� CXC G � ¤¦¥i@#¡ �½� @,GIC ���+�M¢=� C G �=� C �+�A£ @ ��� ¶Ä@#¾q@ ¢ E �§¢O� E � E £A��� C^¡ ¢=� @3ã Ý ¡0E¿E �¦¢O¨À� �O� ² @ £ J � � GDBOG �¦� �§¢=¨ ¤¦¥@ ¢=�q�O¨M� J�C � ¡0CxC � @À¤¦¡0C½C @#G ² ¡ � C � @ � ¡ � @ °9�o� @�¡0G ¨q� E¿@ ¢ C �¦�  �O� CD@ � � E¬B=¤§@)µXC � @ � ¡qE¿@RC � ¡-C ² @ �=� @ £ C ��+�M¢=� C G �=� C £A��� C^¡ ¢=� @:K �+�A£ @ � ¶ÊG � E £A�¦� CD¡ ¢=� @¿N �,�<£ @ � ¡ ¢�£ ² @ £ @ �D� G � F�@ � C ¢ @+»<C °

' �-�21Ä� å3�Ê!3����*ãæ6�¦� ï±h:e0jÈ«E§ X�+�X^K ³ � N ¯ > ]^w3fq\¿\�sMkOIl_LItK�_ÊgO\,j�I,w�fMw#\�Ixe-jÈ«±§ �ÞN@X�+�X^K ³ � K ¯ > ]^w3fq\SR' �-���)( å @,C \ F�@Ä¡ ¢R«E§ X�+�X^K ³ �¿N ¯ > �+�A£ @ °6± @ �,�q¢=� C G �=� C \u� J-¡ ¢R«±§ �uN#X�+�XDK ³ �:K ¯ > �,�A£ @�¶ÊG � E \ ¡ � ¶ � ¤§¤ � ² �#÷å @,C | ���E� ( Xi&�&i&¨X�� ® � � \¬°�®Ä� G GD@ � B �M¢=£A�¦¢O¨ C ��| J \u�<�+�q¢ C^¡ �¦¢=� C � @ �,�<£ @ ² � G £�| � ���E� ( Xi&�&i&¨X�� ® X [ ®� ° ( � � � °«�ç ¤§¤ � � E¿Eu¡-C �§�M¢=���¦¢ C �O��� BOG �<� ¶·¡0GD@ � � E � E �A£A� ¤ � K °ë¯�ê C ���I� ¤§@3¡0G�C � ¡0C \u����� ¡ ¢ý«±§ �þN@X�+�X ò¼¯ > �,�<£ @5¶ � G� � E¿@ ò J=¡ ¢=£ ² � ¡-C ² @ ² �¦� � C �u�½�=� ² ��� C � ¡0C ò +ýK

³ �sK °ê C �½�A¹R� @ � C ���½�O� ² C � ¡-C � ¶ | X½>Ñ� \ J�C � @ ¢wöÀ«�| � X > �z¯ + K

³ �2K °XÅ�� C �¦� @5´�G � C�C � ¡-C öÀ«�| � X½> �z¯ + öÀ«�| X½> ¯l°? �9� ¶�C � @À¤�¡-C C @#G ��� ¡-Cu¤¦@#¡ � CRK

³ � KC � @ ¢ ² @i¡0GD@ £A�M¢ @ °2�o�<�=�¬� C � �A¹R� @ � C �û�+�q¢��½��£ @,GxC � @ � ¡ � @ ² � @,GD@öÀ«�| X > ¯ �ÎK³ ��N °¿êø¢ C �O���:� ¡ � @qJ�¤¦@+C �=� B�@,GDE � C @¿C � @ �+�<� G £A�¦¢ ¡-CD@ �I� ¶ \ù� � C � ¡0C | ¡ ¢�£ >Þ¡ ¨ GD@,@ �§¢ C � @

´=G � C[-�� § ! « K³ �2N ¯ ¤ �A� ¡-C �¦�q¢�� ¡ ¢=£�£O�¦� ¡ ¨ G @#@ �¦¢ C � @X¤¦¡ � C�K

³ �ýN�¤ �A� ¡0C �¦�q¢=�#°�Å�� ² �,�q¢=� �¦£ @,G�C � @� � ¡ ¢ C � Cª¥[ ®� ° ( « � � �,¦ � ¯l° �o�=�¦�  � ¡ ¢ C � Cª¥ý@# � ¡0¤ � C � @�B�¡0G � Cª¥ � ¶ Æ « Kr½ ÷òN ³ ���§¢�|��§¢ C � @�´=G � C1- �+�<� G £A�¦¢ ¡-CD@ �^¯� « K ³ �üN ¯ªÇO°o® ¤§@3¡0GD¤§¥MJ<C �O��� B=¡qG � Cª¥ ���d�A£O£9«�� �§¢�� @�C � @X´=G � C�@,»<B=G @ � � �§�M¢ ¡ � ² @,¤¦¤6¡ � K³¡qG @X@,¾M@ ¢ ¡ ¢�£ C � @�¤�¡ � C

C @#G E�JËN ���X�<£=£=¯l°¬± @¬C �¼���X¨ @+CXC � ¡-C�@+»O¡ � C ¤¦¥ �q¢ @ � ¶ [ ®� ° ( � � ¡ ¢=£ [ ®� ° ( ¦ � ���X�q¢ @ « E �A£A� ¤ � K ¯ ¡ ¢=£ C � @� C � @,G ���£� @,G �=°:�o�<�=�Z| � ¡ ¢=£ > ��£O�¦� ¡ ¨ G @#@ �¦¢ C � @¬¤�¡ � C �+�<� G £A�¦¢ ¡-CD@x¡ ¢�£�� � C � @ £O�¦� CD¡ ¢=� @¬F�@,C ² @#@ ¢ C � @#E �¦�K³ �sK �¦¢ C �O����� ¡ � @X¡q¤ � �=°

vyÆ��JǼzÉÈ Ê���Ë�.�� @ � C � @�BOG � B �M� � C �¦�q¢ ¡0F � ¾q@I@+»<C @ ¢=£ ¶ � G � C � @,Gd¾-¡q¤ � @ �o� ¶�"0ãç B=BO¤§¥ �¦¢O¨ C � @XBOG � B �M� � C �¦�q¢ ¡qF � ¾M@�C � C � @ £A��� C^¡ ¢=� @ æ �,�<£ @ � J Ý ¡0E¿E �§¢=¨¬¨M� Cd¡x¶�¡0E � ¤¦¥ � ¶ £A��� C^¡ ¢=� @Iá �+�A£ @ �,°/I�q�¦¢O¨ ¶ÊG � E ò �Þá¬C �2ò �þH �¦�d¢=�q¢ µúC G � ¾ � ¡0¤ °�êø¢ B�¡0G C ���+� ¤�¡0GoC � @ Ý ¡qE¬E �¦¢O¨ F �q�O¢=£À� E¿BO¤ � @ � C � ¡0C �q¢ @ ¢ @#@ £O�¡0B=BOG � » � Eu¡-C @#¤§¥K�¤ �q¨ + �^� @ �^º F � C � C ��¨ @+C �½���^� ¡ �+�A£ @ °I/ @,C½C �¦¢O¨i� �=�^� ¡ �,�<£ @xBOG � ¾q@ £ C � F�@ ¢O�q¢ µ1CDG � ¾ � ¡q¤¡ ¢�£ ² ¡ � ´ ¢ ¡0¤¦¤§¥ £O�¦�D�+� ¾M@,GD@ £ J �§¢=£ @,B�@ ¢=£ @ ¢ C ¤¦¥uF¼¥uè �M� @�¡ ¢=£×� ¡ ¥Mµ ®Ä� ¡ �=£A�<� G � ß K æ â JA¡ ¢=£RÝ��A�  � @ ¢=¨q� @#E�ß á¼é âúJ�¦¢ N3éMH0é °5�o� @ � @ �+�A£ @ � J ² �=�¦�^� ¡0GD@¬Â �O� C @¬¶�¡qE �M�=�I�O¢=£ @#GXC � @¿¤�¡0F�@,¤ Æ è ®�Ý �,�<£ @ �DÇ J ¨q� ¾q@¬F �¦¢ ¡0GD¥ �+�A£ @ �I� ¶FO¤ �A�^º ¤¦@ ¢O¨ C �o§ ¡ ¢=£¿�A£O£ E �§¢O� E � E £A�¦� CD¡ ¢=� @ ò:�=� �§¢=¨ & �¨(> ¤ �M¨G§i�^� @ �^º F � C �#°��o� @ Ý ¡qE¬E �¦¢O¨ F �q�O¢�£R�½�=� ² �C �=�¦�d��� C �¦¨q� CdC � ² � C �=�§¢ ¤¦@ �D� @#G � G £ @,GoCD@,GDE �#°

æ µ æ K

Page 33: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� ��������� ¾

������������������ ��!#"%$&��')(+*�!,�-��.%/%'0!#�1��*2!3�&45�6.7�1*7�98:"%;<�=� > ?<@#BAC @#E5F�@,G:N3éOJOK0LMLONPRQ%SUT�VXW=Q�¿

[6\^],_1`AaD\+a,bdceMf#gA`ih�`=fMe-j hU]+alk�m^\3bgÀ<w3\ � `AjVd�7�<£ ¡ ¥ ³ � C � B �¦�#�,÷

� ? �§¢=¨ ¤¦@+C �M¢ F �q�=¢=£ ¡ ¢=£ÀÁ ¡-» � E � E .���� CD¡ ¢�� @:?<@,B�¡0G^¡0FO¤¦@ «�Á�. ? ¯d�,�<£ @ �#°� � @,@ £ ? � ¤ � E �q¢��+�A£ @ �#°� � @,@ £)Ái� ¤§¤¦@,G �,�A£ @ �#°� Ý ¡ £ ¡0Eu¡0G £��,�<£ @ �#°

�)|#{ ó ��� ¡)�#���x�+�d�%�x�ÂÁ �´`i���

Ã�� GI´=G � CXGD@ � � ¤ÍC ��� ¡ � � E¿BO¤¦@¿¤ � ² @,GIF �q�O¢=£È�q¢ C � @¿FO¤ �A�^º ¤§@ ¢O¨ C �È� ¶Ä¡ �+�A£ @ ² � G £ J ¨M� ¾M@ ¢ ¡�´O»A@ £È£A��� C^¡ ¢=� @¡ ¢�£ E¬@ � � ¡ ¨ @:¤¦@ ¢O¨ C ��°��o�=�¦� F �M�O¢=£i����£O� @�C ����°�®�° ? �¦¢O¨ ¤§@,C �q¢ ߧN#LyL3â�¡ ¢=£i����� @ ¢=� @ ¢ ¡0E¿@ £ C � @¿? �§¢=¨ ¤¦@+C �M¢F �q�O¢=£�°��7� E � C � ¾-¡0C @dC �O�¦� GD@ � � ¤ÍC3JMGD@ � ¡0¤¦¤AC � ¡-C �¦¢ ¤¦@ � C � GD@�KAJ ² @ � ¡ ² ¡ ¢ ß § X § X#N+â > �+�A£ @�¡ ¢=£ ¡ ¢ ß § X § !�N@XDK â >¡ ¢�£ ² �M¢=£ @#G @ £È� ¶ ² @ �+�M� ¤ £û¨ @ ¢ @,G^¡0¤ �T� @¿C � @ � @)G @ �½� ¤ÍC � C � ¡&ß § X § ! ò � N#X ò â > �,�A£ @ « ¡ ¢=£ C � @ Ý ¡0E¿E �§¢=¨F �q�O¢=£ G � ¤§@ £ C �O���I�q� C�¶ � G ò � æ �§¢ C � @¬F �¦¢ ¡0GD¥ � ¡ � @ ¯+°�ç E � GD@5@,¤¦@,E¿@ ¢ C^¡0GD¥À � @ � C �§�M¢��� ² � ¥ �½�=�q� ¤ £ ² @�q¢ ¤§¥À¡ � º ¶ � GZ+ �4§ ! ò � N:¡ ¢=£À¢O� C�F�@,C½C @#G -o�o� @x? �§¢O¨ ¤§@,C �M¢ F �q�=¢=£i�½�=� ² � C � ¡0C�C �O���������¦¢=£ @#@ £ C � @:F�@ � CB �M�D�½� FO¤¦@qJ � ¾q@#G e-j=p ¡0¤¦B � ¡qF�@,C °

8:"%;<�=�-;<$ õ7�ECbDQ¼C ¨ �ST� ïEh�\ZkOIxe-j�«E§ X�+�X ò¼¯ ð ]^w#fM\:_ÊgO\,jGò=� § !v+J�üN R' �-���)( å @+C?Ý�F�@)C � @¥"3µ ¡qG ¥û¡q¤§B � ¡0F�@+C � ¶ \¬°Þ®Ä�q¢=� ��£ @,GxC � @�BOG � ©ª@ � C �§�M¢ Eu¡0B�à ÷ Ý ® W Ý�ëS� (�C � ¡0CBOG � ©ª@ � C � @,¾M@,GD¥ ² � G £¿�¦¢ Ý ® C �5� C � ´=G � C�+£!ÌN �+�<� G £A�¦¢ ¡0C @ �#° ? �§¢=� @�C � @IGD¡ ¢O¨ @ � ¶�à � ¡ �·�M¢ ¤¦¥�"�ë��¨(�@,¤¦@,E¿@ ¢ C �¡ ¢�£ � \ �Ù�r"�ë;�k"�ëS�¨(0J ² @ � @,@ÀC � ¡0CuC � @#G @�E �=� Cu@,» ��� C¬C ² �û£A��� C �§¢=� C �+�A£ @ ² � G £O�<| X½> � \ � �=�^� C � ¡0Cà «�|6¯ ��à « > ¯l° ? �§¢=� @ | ¡ ¢=£ >9¡ ¨ GD@,@ �q¢ C � @ � Go´=G � C�+J!ûN �+�<� G £A�¦¢ ¡0C @ � J � Co¶ � ¤¦¤ � ² � C � ¡-CoC � @,¥uEu¡ ¥ £A�§í @#G �M¢¡-C�E �M� Co¡q¤§¤�G @#Eu¡ �¦¢O�§¢=¨$§ ! « +£!9N ¯Ë�,�<� G £A�§¢ ¡-C @ � J<¡ ¢�£ C �<�=� ² @ � ¡ ¾M@ öÀ«�| X½> ¯�� § !�+� N °�ê C·¶ � ¤§¤ � ² � C � ¡0CC � @�E �¦¢O� E � E £A��� C^¡ ¢=� @ � ¶ \ ��� ¡-CdE �M� C § !Y+J�ÞN °

á0µ æqæ

Page 34: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

®Ä�A£ @ � C � ¡-C¿E¬@#@+C¬C � @i? �¦¢O¨ ¤¦@+C �q¢ F �q�=¢=£ J �ú° @ ° J � ¡-C �¦� ¶Ê¥?+ � § ! ò �ÉNqJË¡qG @ � ¡0¤¦¤¦@ £2c�eisMk¼a¬`{a v:kOIl_øe-j�]D\h�\9N=e-a eMm+y§\;�úc�v:h�i�+�A£ @ �#°Éå ¡ � CuC � E¿@ ² @ £ @+´ ¢ @ £GÄd\,a±h+\^]+_P�Ëw#fM\�I ¡ �R�+�A£ @ � C � ¡-CÀE¬@#@+CRC � @ Ý ¡0E¿E �§¢=¨F �q�O¢=£ J�¡ ¢�£ ² @ � ¡ �¦£ C � ¡-C�C � @ �q¢ ¤¦¥�B�@,G ¶Ê@ � C �+�A£ @ � ² @#G @IC � @ Ý ¡qE¬E �¦¢O¨R�+�A£ @ � ¡ ¢=£ C ² �u�+�A£ @ ��£A�¦�D�+� ¾M@,GD@ £F<¥ /I� ¤�¡ ¥ °xÁ�. ? �,�<£ @ � ¡ ¢=£ B�@,G ¶Ê@ � C �,�<£ @ � ¡0GD@ �§¢=�,� E¿B=¡qGD¡qFO¤§@ ÷��ú° @ ° J�C � @#G @¬@+» ��� C�B�@,G ¶Ê@ � C �,�<£ @ � C � ¡-C:¡0GD@¢O� C Á6. ?È¡ ¢=£ÌÁ�. ? �,�A£ @ � C � ¡-C:¡0GD@ ¢=� C�B�@#G½¶Ê@ � C °¬­ ¡ �^� E¿@,@,C � ¡ ¢��¦¢=�+� E¬B�¡0G^¡0FO¤¦@ � BAC � Eu¡0¤ � Cª¥ � G � C @#G �¦�q¢6°�7�<£ ¡ ¥ ² @ ² � ¤§¤ � @#@X¡ � � E¿BO¤¦@�F � C�¤�¡0G ¨ @�¶�¡0E � ¤§¥ � ¶ Á�. ? �,�A£ @ � J ¢ ¡0E¿@#¤§¥uC � @ � @#@ £ µª? � ¤ � E �M¢À�,�<£ @ �#°

�)|lî Ì×����� ¡��x�,�xñò�¬� �d�R�i���

� @#@ £ µª? � ¤ � E �M¢2�,�A£ @ � ² @#G @ �¦¢ C G �<£O�=� @ £2�§¢ ¡ûB�¡0B�@,G�F<¥ � @,@ £ ¡ ¢=£ ? � ¤ � E �q¢2�¦¢ N#é¼H0é2ß é¼K3â °É�o� @,¥2¡0GD@F=¡ � @ £R�q¢ BOG � B�@,G C � @ ��� ¶ �=¢O� ¾-¡qG � ¡-CD@�B � ¤¦¥ ¢O� E � ¡0¤ � ¡ ¢=£��¦¢ B=¡0G C ���+� ¤�¡0GÄC � @�¶ � ¤§¤ � ² �¦¢O¨ BOG � B�@,G Cª¥ � ¶ �O¢O� ¾ ¡qG � ¡-CD@B � ¤¦¥ ¢=� E � ¡q¤ � ¡ �o�§¢ CDG �A£A�=� @ £)�§¢ C � @�¤¦¡ � Cd¤¦@ � C � GD@ «�� @,@ å @ � C � G @ Å�� C @ �d�q¢�ç ¤ ¨ @#FOG^¡ ¯l°

Ú ¡='0!=õ7�Om e Y w�f-kOIl_1kzj�]+_¨NOw0y p-j�w�axk�e0y¿I 5 ( K 5 > � ( ð ß �Oâ w�hIfM\<d0a \^\£Il_úalk�]+_úy p¬y§\�ItII_zg=e-j + KËeidqa \^\XkzjPIl_úalk�]+_úy p¬y§\�IgI_ÊgOe-j + NOw0kzj=_LI�kzjR( ð R�ïiRz\SRTK·_ÊgO\,a \x\tsMkOIl_�e-_Ùauw�Il_ +Q!ýN N=w-kzj=_LI �p� ( ð IiR¦_<R 5 ( «&pL 5Å" pA¯DÆ 5 > «&pL 5¦" p<¯�R÷�Ð1ÿdÐ½Ï Òw�·Ô�ÛMÒAÖÈÇ�Ú�Ò%���·Ô��ËÙXÉ2Ø�Ø6Õ°qÑÙ�q�*�����·ÔiÒ �dÕ�Ø7Û

± @ £ @ �D� G � F�@�C � @ � @#@ £ µª? � ¤ � E �M¢2�,�A£ @ � F<¥ ¨q� ¾ �§¢O¨ C � @�@ ¢=�+�A£A�¦¢O¨ ¶ �O¢=� C �¦�q¢ ¶ � GuC � @#E ° Å�� CD@iC � ¡0CRC � @@ ¢��+�A£A�¦¢O¨ ¶ �O¢=� C �§�M¢��¦�d¢=� C �O¢O�  � @ °�Ã�� G �^�=�q��� @ �¦� E¿¡ £ @ �½� E¿BO¤¦¥RC � @3¡ � @�C � @�@+»AB �M� � C �§�M¢�°/I� ¾q@ ¢ ¡IBOG � E¿@oB � ² @,G�"I¡ ¢=£Q§w� "<JM¡ ¢=£ + �㧠Jq¡ � @#@ £ µª? � ¤ � E �M¢x�+�A£ @ � ? ð X ® X ë �¦�·�+�q¢�� CDG �=� C @ £ ¡ � ¶ � ¤§¤ � ² �#÷

N °/ @ ¢ @#GD¡0C @�C � @�´=@,¤ £h> ð @+»ABO¤ �¦�,� CD¤§¥ «1� ¡ ¥¬¾ � ¡x¡ ¢)� GDG @ £A�=�,� FO¤¦@�B � ¤¦¥ ¢O� E � ¡0¤ � ¾q@#GËC � @ �O¢�£ @,GD¤§¥ �¦¢O¨ B=G � E¿@ ¯l°K °�öË���^ºo§Ì£A��� C �¦¢=� C�@#¤§@#E¬@ ¢ C � � ( X�&i&i&¨X�� ® � ( ð °ËÅ�� C @XC �=�¦�o��� ² � @#G @ ² @ ¢ @,@ £ C � @�BOG � B�@,G Cª¥ § � " °æ °��6�R£ @,´ ¢ @�C � @:@ ¢=�+�A£A�¦¢O¨ J ² @X´�G � C�B ���^º ¡ �,�q¢ ¾q@ ¢O� @ ¢ CoGD@,B=G @ � @ ¢ C^¡-C �§�M¢ ¶ � G�C � @:E¿@ �D� ¡ ¨ @ �#°·Å�� C @:C � ¡0C

C � @¬E¿@ �D� ¡ ¨ @ ��� +i@,¤¦@,E¿@ ¢ C ��� ¶ > ð J � ¡ ¥ è ) X�&i&�&¨X è ëS� ( °�± @¬¤§@,C�C � @xE¿@ � � ¡ ¨ @ £ @+´ ¢ @¬C � @¬B � ¤§¥ ¢O� E � ¡q¤\¿« � ¯ 8i:<;� [ ëS�¨(% ° ) è % � % °á °��o� @É@ ¢��+�A£A�¦¢O¨ � ¶9C � @ÉE¿@ �D� ¡ ¨ @ \¿« � ¯Þ��� � C � @,¾-¡q¤ � ¡0C �¦�q¢ ¡-C � ( Xi&�&i&¨XF� ® J �1° @ ° JÌC � @ � @3 � @ ¢=� @� \¿« � ( ¯ Xi&�&i&¨X \¿« � ® ¯ � °

÷�Ð1ÿdÐ1ÿ ��Ó�ÖOÓ���ØUÒAØ�Ö=ÛûÓ�Ú Ü�ØZ�%Ø·Ø6Õ�ÊÙÛ Ò%Ü�Ø�Ú��dÕ�Ø�ËRÌ�ÍDÎ Ï�Î þ¸%� G � C ² @ ¢O� C @IC � @XC � @ � @#@ £ ? � ¤ � E �M¢À�,�<£ @ � ¡0GD@I¤ �¦¢ @#¡qG °

' �-�21Ä� å3�Ê!3����* õ7��æ e�gO\In�\^\^f�� hUw-y§w�a¿w0jÌ]^w#fM\£� ? ð X ® X ë kOI:y kzj�\^e-aiR' �-���)( ? � BOB �M� @ ² @�¡0GD@ ¨q� ¾q@ ¢ C ² �&�+�A£ @ ² � G £O� � \¿« � ( ¯ Xi&�&i& X \¿« � ® ¯ � ¡ ¢=£ � M�« � ( ¯ Xi&i&�&¨X M« � ® ¯ � ¡ ¢=£� � BOB �M� @hAç� > ð °)± @ ¢ @#@ £ C �È�½�O� ² C � ¡-C:C � @ � @# � @ ¢�� @ � � \¿« � ( ¯ � M« � ( ¯ Xi&�&i& X \¿« � ® ¯ � M« � ® ¯ � ¡ ¢=£�ÐA \¿« � ( ¯ Xi&�&i&¨X�A \¿« � ® ¯ � ¡0GD@:¡0¤ �½�u�+�A£ @ ² � G £=�,°�Å�� CD@�C � ¡-C�C � @�¶ � GDE¿@,G � @# � @ ¢=� @ ��� C � @:@#¾ ¡q¤ � ¡-C �¦�q¢��d� ¶�C � @B � ¤¦¥ ¢=� E � ¡q¤ «D\ � M�¯,« � ¯ ¡0C�C � @dB �q�¦¢ C � � ( X�&i&�&¨XF� ® J ² �O� ¤¦@ÄC � @�¤�¡-C C @,G ��� C � @d@,¾-¡0¤ � ¡0C �¦�q¢=��� ¶�C � @dB � ¤§¥ ¢O� E � ¡q¤A \ ¡-CXC � @ � ¡qE¬@¿B �q�¦¢ C �#°¿¸=� G C � @#G#J ¢O� CD@xC � ¡-C � ¶ \ J M ¡0GD@xB � ¤¦¥ ¢O� E � ¡0¤ �X� ¶ £ @ ¨ G @#@¬¡0C:E �¼� C�+=!üN¬C � @ ¢

á0µ æ á

Page 35: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

C � @¬B � ¤¦¥ ¢O� E � ¡0¤ �0\ � M ¡ ¢=£ A \ ¡0GD@x¡0¤ � � B � ¤¦¥ ¢O� E � ¡0¤ ��� ¶ £ @ ¨ GD@,@¿¡-CXE �M� C:+=! N °¬�o�<�=� C � @uGD@ � � ¤§C �¦¢O¨� @# � @ ¢�� @ � ¡qG @X¡0¤ � �¿�,�A£ @ ² � G £O��� ¶7C � @ � @#@ £ µª? � ¤ � E �M¢À�,�A£ @ °

ê C �¦�¬� F¼¾ �¦�q�=� ¶ÊG � E C � @ �,�q¢=� C G �=� C �¦�q¢ C � ¡-C¿C � @ � @#@ £ µª? � ¤ � E �M¢ �+�A£ @ � ? ð X ® X ë � ¡ � FO¤ �A�^º ¤§@ ¢O¨ C � § ¡ ¢=£E¿@ �D� ¡ ¨ @�¤¦@ ¢=¨ C � + °Ë�o� @ �q¢ ¤¦¥uB=¡0G^¡0E¿@,C @,G·C � ¡0C £O� @ ��¢O� C�¶ � ¤¦¤ � ² F<¥ £ @,´ ¢O� C �¦�q¢À�¦� C � @ £A��� CD¡ ¢�� @qJ<F � CÄC � ¡-C �¦�@#¡ �½� ¤¦¥�¡0G ¨q� @ £U°

' �-�21Ä� å3�Ê!3����* õ7�Tõ e�gO\In�\^\^f�� hUw-y§w�a¿w0jÌ]^w#fM\£� ? ð X ® X ë gOe�Ixf0kOIl_ e0j�]^\§ !Y+J�ÞN R' �-���)( è�¥�C � @¬? �§¢O¨ ¤§@,C �M¢ F �M�O¢=£ ² @ º<¢O� ² C � ¡0C�C � @ £A��� CD¡ ¢�� @ ò��]§ !?+��üN ° ? �R� C � �A¹R� @ � C � BOG � ¾q@ò + § !?+��üN ° ? � B=B �¼� @ ² @ � ¡ ¾M@XC ² �)£A�¦� C �¦¢=� C�B � ¤¦¥ ¢=� E � ¡q¤ ��\¿« � ¯ ¡ ¢�£¥M« � ¯�� ¶ £ @ ¨ GD@,@:¡0C�E �M� CZ+f!2N °�o� @ ¢ F<¥ ¸ ¡ � CËá ° K ² @ � ¡ ¾q@�C � ¡-C \¿« � ¯ ¡ ¢=£QM�« � ¯ ¡ ¨ GD@,@ �q¢ ¡-CËE �¼� CS+q!�N�B �q�¦¢ C ��� ¶ > ð ¡ ¢=£x� @ ¢=� @ £A��� ¡ ¨ GD@,@�q¢ ¡-C�¤¦@#¡ � C § !v+$� NXB �M�§¢ C �o� ¶%C � @ � @+C } � ( X�&i&�& XF� ® � °��o� @ £A��� CD¡ ¢�� @I¶ � ¤¦¤ � ² �#°

ç�� ¡xGD@ � � ¤§C ² @ ¨ @,CdC � @X¶ � ¤§¤ � ² �¦¢O¨ C � @ � G @#E °

8:"%;<�=�-;<$ õ7�Oÿ,n w0a�\�b-\+alpÙN�alk¼a¿\GN=w Y \,a " K7e-j�f5\ib \,alpÙNOe0kza�w*h�N=w�Ilkz_úk¼b \�kzj=_ø\<dM\,agI +�X §wIl`=]Dg¿_zg=e-_ + �㧠� " K_ÊgO\,a \x\tsMkOIl_EI:e-j ß § X�+�X § !v+J� N+â ð ]^w#fM\�R÷�Ð1ÿdÐLÚ �4�������½Ú�Ó%Ò%�*�·Ô�Û��ËÙuÒ%Ü�ØiÉ2Ø�Ø6Õ°qÑÙ�q�*�����·Ô�Ú��dÕ�Ø6Û

è�¥xB=¤¦¡ ¥ �¦¢O¨�¨ ¡qE¬@ � ² � C � C � @�¡0¤¦B � ¡qF�@,C �½��� @MJ ² @ ³ ¾q@dEu¡ ¢ ¡ ¨ @ £ C �:�,�q¢=� C G �=� C �+�A£ @ � C � ¡0CÄE¿@,@,CËC � @I? �§¢=¨ ¤¦@+C �M¢F �q�O¢=£�° è � CX¡ ¢ ¡-C � G^¡0¤� � @ � C �¦�q¢ C � ¡ �½º ¡-CIC �=�¦�X� CD¡ ¨ @ ���,÷ Æ Ý�� ² ��� @,¶ � ¤ �¦��� CIC �)� ¡ ¾q@5¡ �+�A£ @ � ¾q@,G�¤¦¡qG ¨ @¡0¤¦B � ¡qF�@,C � ã ÇO°�7� ¡ ¢=� ² @#GXC � @) � @ � C �¦�q¢ J ² @¿´=G � C �§¢ ¾ �Mº @¿@,E¿B � G �¦� ¡0¤Ë@#¾ ��£ @ ¢=� @ -×� @,@ £ µª? � ¤ � E �q¢û�,�<£ @ � ¡0GD@uB �M�D�½� FO¤¦¥C � @E �M� C �,� E¿E �q¢ ¤¦¥ ��� @ £�+�A£ @ ���¦¢ BOG^¡ � C ��� ¡0¤%¡0BOB=¤ ��� ¡0C �¦�q¢=�#°�êø¢ B=¡qG½C �¦�,� ¤�¡0GdC � @,¥i¡0GD@ �=� @ £ C �)� C � G @ �§¢ ¶ � G Eu¡0µC �¦�q¢~c E ���½���Éc ¾ ��£ @ �À�¦¢û�+� E¬B�¡ � C £O�¦�D�,�R« ®Ù.��^¯ ¡ ¢=£9£A�§¨M� C^¡0¤Ë¾ ��£ @ �£O�¦�D�,�R«L. � .I�^¯ J�Eu¡ º<�§¢=¨ C � @#E C � @uE �M� C£ @#BO¤ � ¥M@ £ ¶�¡0E � ¤§¥ � ¶ �,�A£ @ ��-dÝ�� ² £A� C � @ � @�C @ �^�O¢O� ¤ �M¨q� @ � @ ¢=£�� B �=� �¦¢O¨��+�A£ @ ��� ¾M@,Gd¤�¡0G ¨ @:¡0¤¦B � ¡qF�@,C � ã ± @£ @ � � G � F�@xC � @¬F�¡ � �¦�x�¦£ @#¡)F�@#¤ � ² °�«�± ¡qG ¢=�§¢O¨�÷��o� @ ¢<� E5F�@,G �I�=� @ £ F�@#¤ � ² ¡qG @xE �M� C ¤¦¥�¶ � GX@+»O¡0E¿BO¤¦@ °x�o� @,¥¡0GD@ � ¤ �M� @�C � JOF � C ¢O� C�@,»O¡ � CD¤§¥�@# � ¡0¤�C � C � @ ¢<� ExF�@#G �o�=� @ £À�¦¢ BOGD¡ � C �¦� @ °ë¯®Ù.I� ¡ ¢=£6. � .I�I� C � G @ �§¢ ¶ � GDE¿¡0C �¦�q¢ ¡ � ¡ � @# � @ ¢�� @ � ¶·F � C �#°:�o� @x¡ � C � ¡0¤ � @# � @ ¢�� @ � ¶·F � C �I���  �O� C @¬¤ �q¢O¨�°�o� @ �=� � ¡0¤%@,GDG � G½µ �+� G GD@ � C �¦¢O¨ E¿@+C �=�<£=� F=G @3¡ º C �O��� ¤ �M¢O¨)� @# � @ ¢=� @ �§¢ C � ¡ �+� ¤¦¤¦@ � C �§�M¢� ¶ � Eu¡0¤¦¤ �^�¼�=¢OºA� ¡ ¢=£@ ¢��+�A£ @À@#¡ �^�ý�^�<�O¢Oºû� @#B=¡0G^¡-CD@,¤¦¥ °&¸=� G¿@+»O¡0E¿BO¤¦@qJ ² @ÀEu¡ ¥ÌB �¦�^º @3¡ �^�s�^�<�O¢=º C �û�+�q¢ C^¡ �¦¢ K-á¼LF<¥¼C @ � @3¡ �^�« ² � @,GD@ �M¢ @�F<¥¼C @X@# � ¡q¤ � ì¿F � C �^¯l°Ä�o�O�¦�o¨M� ¾M@ � ¡¬E¿@ �D� ¡ ¨ @ � @3 � @ ¢=� @ � ¶�K-áML¬F<¥¼C @ � ² � @,GD@ ² @ ¢O� ² �§¢ CD@,GDBOG @,C@#¡ �^� F¼¥¼CD@R¡ � ¡ ¢ @#¤§@#E¬@ ¢ C � ¶ > >BÑ]Ò J6C � @u´=@#¤ £9�M¢ KMHJLÀ@,¤¦@,E¿@ ¢ C �,°Àä�� �§¢=¨¥§ � "¥� KMHJL=J �q¢ @uE¿¡ ¥�@ ¢=�,�<£ @C �=�¦�Ä� @3 � @ ¢=� @ �=�½�¦¢O¨ ¡ � @,@ £ µø? � ¤ � E �q¢u�+�A£ @ � ? >BÑ]Ò X >BÑ]Ò X >BÓ ) C �:¨ @+CÄ¡ � @# � @ ¢=� @ � ¶6KqHJLIF<¥¼C @ � ² �O���^� ¡0GD@oC � @ ¢GD@ �+� G £ @ £)�q¢ C � @ ®Ù.x°��o�<�=���§¢ ¡ � C � ¡0¤ � Cª¥ ² @ � ¡ ¾M@ £ @ �D� G � F�@ £ ¡ m,kzj�e-alp�\+alaDw-a��½]^w-ala \^],_1kzjVd)]^w3fq\�� ¶�E¬@ � � ¡ ¨ @¤¦@ ¢O¨ C � K0áML ¤ ìXF � C � J<¡ ¢=£ F=¤ �A�^º ¤§@ ¢O¨ C � KqHJL ¤ ìXF � C �,°�±Þ� ¡0C ��� C � @ £O�¦� CD¡ ¢=� @ � ¶�C �O���Ä�,�A£ @3ã �7� ¡ ¢ ¡0¤¦¥ � @dC � @£A��� C^¡ ¢=� @qJ¼´=G � Co¤¦@+C �=� G @ � ¡q¤§¤�C � ¡-C�C � @ �O¢=£ @,GD¤§¥ �¦¢O¨f� @,@ £ µø? � ¤ � E �q¢��,�<£ @ � ¾M@,G > >]Ñ$Ò � ¡ �o£A��� C^¡ ¢=� @xN-à�· �ú° @ ° J² @�E ��� C �^� ¡ ¢O¨ @�¡0CĤ¦@#¡ � C�N-àIF<¥¼C @ �Ä� ¶UC � @I@ ¢=�,�<£ @ £ E¿@ �D� ¡ ¨ @�C �¬¨ @+Co¡ ¢ @ ¢=�+�A£A�¦¢O¨x� ¶ � � E¿@ � C � @#G·E¿@ �D� ¡ ¨ @ °êø¢ C � G ¢ C �=�¦�5� E¿BO¤ � @ � C � ¡-C ² @ ¢ @,@ £ C �P3=� B&¡-C:¤¦@#¡ � CRN-à)F � C �:�¦¢ C � @�F �§¢ ¡0GD¥�@ ¢��+�A£A�¦¢O¨M� C �i¨ @,C�¶ÊG � E �q¢ @�+�A£ @ ² � G £ C � ¡ ¢O� C � @#G °�ç F � C G^¡ � C �¦¢O¨ C �=�¦�·�¦£ @3¡X¶ � GÄ¡0GDF � CDGD¡qG ¥ § X�+¬¡ ¢=£ "<J ² @ ¨ @+C·C � @d¶ � ¤§¤ � ² �¦¢O¨�� E¿BO¤ ��� ¡-C �§�M¢¶ � GdF �§¢ ¡qG ¥ �+�A£ @ �#°

' �-�21Ä� å3�Ê!3����* õ7�¦ çn w-as\ib \,alp + � § � " K Y gO\,a \ " kOIseµN�alk¼au\6NOw Y \+agKÌ_zg=\+a \2\tsMkOI^_LIse h+e�a¬kzy p w�h«±§|Ô ¤ �M¨@> "�Õ�X�+�¤ �q¨�> "VX § !v+$� N ¯ > ]^w#fM\�R

á0µ æ H

Page 36: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

vyÆ��JǼzÉÈ Ê���Ë ? �O� ² C � ¡0C � ¶�"u�üK � JAC � @ ¢ C � @:¡0F � ¾q@ �+�A£ @ �,�q¢=� C G �=� C �§�M¢À� ¡ ¢ F�@�Eu¡ £ @X¤ �¦¢ @#¡qG °Ý�� ² ¨q�<�A£À�¦���½���^� ¡ �+�A£ @3ã ± G � C½CD@ ¢� ¤ �¦¨q� CD¤§¥ £A�Íí @,GD@ ¢ CD¤§¥MJ�¡ ¢=£ C � G � ² �§¢=¨ ¡ ² ¡ ¥ � � E¿@ 3=�<� G � ¡ ¢=£i� @ � ¤ �§¢=¨M� J² @ � @#@�C � ¡-CÄC � @I¡0F � ¾q@�¡0E �M�O¢ C � C �5�+�A£ @ �·� ¶�C � @�¶ � GDE « º'� « N���ó « N ¯½¯Uò ¤ �q¨ º�X�º�X ò¼¯ > �+�A£ @ �,°�êø¢R�,�q¢ C G^¡ � CC � @ Ý ¡qE¬E �¦¢O¨ F �q�O¢�£i� ¡ ¥ � ¡ �+�A£ @ ² � C � E¬@ � � ¡ ¨ @X¤§@ ¢O¨ C � º ¡ ¢=£i£A��� CD¡ ¢�� @ ò E �=� C � ¡ ¾q@XFO¤ �A�^º ¤¦@ ¢O¨ C � ¡0C¤¦@#¡ � C0º�� « N£!pó « N ¯½¯ & > ¤ �q¨ º&J�¶ � G�¡ ¢ ¥À´O»A@ £9ò ¡ ¢�£ º W é ° ? � C � @ � @ �,�<£ @ � F=¡ � @ £�q¢ � @,@ £ µø? � ¤ � E �q¢�+�A£ @ � ¡qG @ ¢O� CËC �<� F�¡ £u�+� E¿B=¡0GD@ £ C � C � @ � E¿B �¼� � � F � ¤ � Cª¥xGD@ � � ¤§C °�ç�� ² @�E¿@ ¢ C �§�M¢ @ £ ¤�¡ � CËC � E¿@qJ¼F�@+C½CD@,G �+�A£ @ �¡0GD@ º<¢O� ² ¢�°%êø¢ B=¡qG½C �¦�,� ¤¦¡qG�¶ � G·C � @ � ¡qE¬@�FO¤ �A�^º ¤§@ ¢O¨ C � ¡ ¢=£u£O�¦� CD¡ ¢=� @MJ¼è ®�Ý �,�<£ @ �·�,�q� ¤ £ @ ¢��+�A£ @IK0áMìIF<¥¼C @ �� ¶ £ ¡0CD¡ ° è � C�¡ ¢ ¡0¤¦¥ �,�¦¢O¨ C �O�M� @ �+�A£ @ �d�¦�d� � E¿@ ² � ¡-C � ¡qG £ @#G#J ² �O���^���¦� ² � ¥ ² @ £A�M¢�³ C�B=G @ � @ ¢ CoC � @,E � @,GD@ °?¼C � ¤¦¤�C � @ �+� E¿BO¤§@,» � Cª¥ � ¶7¡ ¢ ¡q¤§¥ �#�§¢O¨ C � @ £A��� CD¡ ¢�� @ � ¶�C � @ �,�A£ @ � ¡ ¢)¢O� CoB �¼� � � FO¤§¥R¡xGD@#¡ � �q¢u¢=� C�C �¬�=� @IC � @,E�¦¢ BOGD¡ � C �¦� @ ° ? ��£A� B�@ � BO¤¦@RBOGD@+¶Ê@#G:C ���=� @)¡ ² @3¡ º @,G � @#@ £ µª? � ¤ � E �M¢9�,�A£ @�¡ �5� BOB �M� @ £ C � ¡iB � C @ ¢ C � ¡0¤¦¤§¥F�@+C½CD@,G5è ®�Ý �,�A£ @3ã �o� @uEu¡ �¦¢ GD@#¡ �½�M¢È��� C � @ ¢ ¡-C � GD@ � ¶�C � @u@#G G � G °u� ¥<B ��� ¡q¤Ë@,GDG � G �I�M¢Ì� C � GD¡ ¨ @ £ @,¾ ��� @ �C @ ¢=£ C �¬� ¡0BOB�@ ¢À�¦¢ F � G � C �#° ? � ² � @ ¢ J � ¡ ¥qJ æ L5F � C �o�q¢ C � @ �^�<�O¢Oº ¡qG @ 3=� B=B�@ £�� C �¦�  �O� C @X¤ �¦º @#¤§¥¬C � ¡-CoC � @ � @æ L¬F � C�@#G G � G � ¡0GD@ ¢=� C £A��� CDG � F � CD@ £À�O¢O� ¶ � GDE¿¤§¥ � ¾q@#GoC � @ �^�<�O¢Oº JOF � C�¡0GD@X¤ �A� ¡0¤ �T� @ £ C � ´=¾M@ � G � � »ÀF¼¥¼CD@ �#°Ëêø¢� �=�^� ¡ �Ë� ¡ � @qJqC � @ � @,@ £ µø? � ¤ � E �q¢u�+�A£ @ � ¡ ¢ ¡ � C � ¡q¤§¤¦¥ �+� GDGD@ � CË¡q¤§¤=C � @ � @�@#G G � G �d«�� �¦¢=� @ � C � ¡ ¢R�+� G GD@ � C � BAC � ìF<¥¼C @�@#G G � G �D¯�-6�o�O��� @ ¢O� ¡ ¢�� @ £ B�@,G ¶ � GDEu¡ ¢=� @ � ¶�C � @ � @,@ £ µø? � ¤ � E �q¢¿�+�A£ @ ���§¢R� ¡ � @ � ¶UF � G � Cª¥5@,GDG � G�B=¡0C½C @#G ¢����� C � @�Eu¡ �¦¢ G @3¡ � �q¢ ² � ¥ � C ����� �¿�,� E¿E �q¢ ¤¦¥ �=� @ £�°

�)|�ì � �R�i���������7���ô�x�Ö� `i�l���$ X��~Ë�,�I�%�+�þ�¬�lõ)���¬ñ��,�:�+�

�o� @XEu¡-© � G�F � C C ¤¦@ ¢ @ �^º ² � C � C � @ � @#@ £ ? � ¤ � E �M¢)�,�<£ @ �o��� C � @XGD@ � C G �¦� C �¦�q¢ "Q+ §�°�êø¢ C �O�¦��� @ � C �¦�q¢ J ² @ �=� @E �§¢=� G�¡0¤ ¨ @#FOG^¡ ��� @,»¼CD@ ¢=� �¦�q¢=�o� ¶ � �=�^���+�A£ @ � C �¿¨ @,C �+�A£ @ � ² �=�¦�^� ² � G ºu� ¾q@,G � Eu¡0¤¦¤§@#G�¡0¤¦B � ¡0F�@+C � J �§¢=� ¤ ��£A�§¢=¨�q¢ @ ¢=�q¢ µúC G � ¾ � ¡0¤�¶�¡qE � ¤¦¥ � ¶ �+�A£ @ �o� ¾q@,G�C � @�F �¦¢ ¡0GD¥�¡0¤¦B � ¡qF�@,C °

÷�ÐLÚdÐ½Ï óµ�%Ø%Ó�Ö2�½Ó%Ò<Ø��J���9Û�Ô���� �ªÓ��½Û± @ � CD¡qG½CÀF¼¥ ¨ @ ¢ @#GD¡q¤ ���,�¦¢O¨ C � @ �¦£ @3¡&F�@ �O�¦¢=£D� @,@ £ ? � ¤ � E �q¢ �+�A£ @ �À�§¢ ¡ � � E¿BO¤¦@ ² ¡ ¥ �=�½�¦¢O¨ F � ¾ ¡qG � ¡-CD@B � ¤¦¥ ¢=� E � ¡q¤ �Ä�¦¢=� CD@#¡ £R� ¶ �O¢O� ¾ ¡qG � ¡-CD@�B � ¤¦¥ ¢O� E � ¡0¤ �,°��o�O��� ² � ¤¦¤�¡0¤¦G @3¡ £ ¥ ¨q� ¾q@ �+�A£ @ ��� ¾M@,GÄ¡ ¢ ¡0¤¦B � ¡qF�@,C � ¶ � �T� @"J� ä §�°�± @�BOG �A� @,@ £ ¡ � ¶ � ¤§¤ � ² �#÷¸O� GdBOG � E¿@XB � ² @,G"¬¡ ¢�£��¦¢ C @ ¨ @,G �4"�C � @�F � ¾-¡qG � ¡-CD@IB � ¤¦¥ ¢O� E � ¡0¤ �,�<£ @ � ð X � ���d£ @+´ ¢ @ £ ¡ � ¶ � ¤§¤ � ² �#÷

� Á @ �D� ¡ ¨ @ �:�+�M¢=�½��� C � ¶ «� � N ¯ > ´=@#¤ £ @,¤¦@,E¿@ ¢ C � ² �O���^� ² @�¾ � @ ² ¡ � ¡ ¢þ«� �ÉN ¯ ¤ «� � N ¯ Eu¡-CDG � » � ¶�+� @ ¹R�+� @ ¢ C � ��- � % � � X �� ° ) X % ° ) °u± @ �¦£ @ ¢ C � ¶Ê¥C �=�¦� E¿@ � � ¡ ¨ @ ² � C � C � @uF � ¾ ¡qG � ¡-CD@¿B � ¤§¥ ¢O� E � ¡0¤U� « �ZX�¦ ¯ �[ � � ° ) [ �% ° ) - � % � �L¦ % °

� �o� @�@ ¢=�+�A£A�¦¢O¨Ì� ¶�¡�E¬@ � � ¡ ¨ @ �,� GDG @ � B �q¢=£O�§¢O¨ C � � « �ZX�¦ ¯x���5� C � @#¾ ¡q¤ � ¡-C �¦�q¢ ¡-C¿¡0¤¦¤Ä´�@,¤ £ @,¤¦@,E¿@ ¢ C �,°�o�¼��� C � @�@ ¢=�+�A£A�¦¢O¨¿� ¶F� ��� �#� « ��XBA ¯ � � ^�×DØ X Ù ^�×DØ °

�o�O���d¨q� ¾q@ �d�=� ¡ ¢ ß § X�+�X ò â ð �,�A£ @ ² � C �¥§ ��" > ¡ ¢=£ +=� «� �ÞN ¯ > °oÝ�� ² E ���^�À��� C � @ £A��� C^¡ ¢=� @3ã ê C�¶ � ¤¦¤ � ² �¶ÊG � E �o� @ � G @#E�N-à � ¶ å @ � C � GD@ÀK ° H «1å @ � C � G @ ¢O� CD@ �x�q¢ ¡0¤ ¨ @#FOG^¡ ¯ C � ¡-C � C �x£A��� CD¡ ¢�� @ ���rò � « "f! ú¯ > °Èêø¢�+�M¢ C G^¡ � C#JOC � @¬? �§¢O¨ ¤§@,C �M¢ F �M�O¢=£ ¡q¤§¤ � ² �ò �ç" > ! «� �üN ¯ > °��o� @ £A�§í @#G @ ¢=� @MJ�¡qBOBOG � » � Eu¡-CD@,¤¦¥qJ�K ½« "�! ú¯ J �¦�C � @�BOG ��� @ ² @XB=¡ ¥u¶ � GoC � @ � E¿¡q¤§¤¦@,G�¡q¤§B � ¡0F�@+C � �T� @ °

á0µ æ L

Page 37: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

÷�ÐLÚdÐ1ÿ ÐÚÇ��øÒ%�%Ø%Ó�Ö2�½Ó7ÒAØ��J���9Û�Ô�q���½Ó��5Ú��dÕ�Ø6Û¦ÛEÉýØ6Ø6Õ^°ÁвÇ����ªØ�ÖýÚ��oÕ�Ø6Û

± @ ¢O� ² @,»¼CD@ ¢=£ C � @ ¨ @ ¢ @,G^¡0¤ �T� ¡-C �§�M¢Ì� ¶dC � @)BOGD@,¾ �§�M�=�5� @ � C �¦�q¢ ¶ � ¤§¤¦¥qJ�C � E � ¤ÍC � ¾-¡qG � ¡-CD@RB � ¤§¥ ¢O� E � ¡q¤ � ² � C �¡ ¢ ¡0GDF � C G^¡0GD¥ ¢<� ExF�@#G � ¶�¾-¡0G � ¡qFO¤¦@ � J � ¡ ¥v- °&�o� @ � @ �+�A£ @ � ¡qG @�C @,GDE¿@ £ã� @,@ £ µ Ái� ¤¦¤§@#G �,�<£ @ � ¡-¶zCD@,G¬C � @ � G£A��� �,� ¾q@#G @#G �#÷��o� @ � @ �+�A£ @ � ² @,GD@ £A�¦�D�+� ¾M@,GD@ £ F<¥ .x°�­�°=Ái� ¤¦¤§@#Gxß ì æ â�¡ ¢=£ C � @ ¢iêl° ? ° � @#@ £�¨ ¡ ¾q@�¡ £ @ �,�A£A�§¢=¨BOG �A� @ £O� G @I¶ � GoC � @#E ß éONlâ °Ë�o� @ �+�A£ @ � ¡ �d£ @ � � G � F�@ £)� @,GD@�¡0GD@ ¨ @ ¢ @#GD¡q¤ ��� @ £ C � ¡xG^¡ ¢=¨ @ � ¶�B=¡0G^¡0E¿@+CD@,G � C � ¡0C² @,GD@ ¢O� C �+� ¾M@,GD@ £9� G �¦¨q�¦¢ ¡0¤¦¤§¥MJ ² �=�¦�^� � @,@#E � C ��� ¡ ¾M@u¶ �A�+�=�D� @ £û�q¢&�,�A£ @ �x� ¾q@#G > > �q¢ ¤¦¥ °ý«Êêø¢ B=¡qG½C �¦�,� ¤�¡0G3JC � @ ² ¡ ¥ ² @ £ @ � � G � F�@�C � @#E�J�C � @ � @ ² � ¤¦¤7F�@ � C G ��� C ¨ @ ¢ @#GD¡q¤ ��� ¡0C �¦�q¢=�o� ¶ � @,@ £ µª? � ¤ � E �q¢�,�A£ @ � J ² �=� ¤¦@ � @#@ £ µ? � ¤ � E �M¢À�,�A£ @ � ² @,GD@�¡ � C � ¡0¤¦¤¦¥ £A�¦�D�+� ¾M@,GD@ £ E �=�^� ¤�¡-C @#G -ë¯Ý @#G @ ² @ ² � ¤¦¤ ² � G º ² � C � C � @ ¢=� C �¦�q¢À� ¶7C � @IC � CD¡q¤ £ @ ¨ G @#@ � ¶%¡¬B � ¤¦¥ ¢=� E � ¡q¤ °�� @ � ¡q¤§¤�C �=�¦�d��� C � @IEu¡0» � E � EÀJ� ¾q@#G�¡0¤¦¤6E �M¢O� E � ¡0¤ � ² � C �¢O�M¢ µ � @,G �R�+� @ ¹u�,� @ ¢ C � J � ¶�C � @:C � C^¡0¤ £ @ ¨ GD@,@ � ¶�C � @xE �q¢O� E � ¡0¤úJ ² � @,GD@�C � @5C � CD¡0¤£ @ ¨ GD@,@ � ¶�¡ÀE �q¢=� E � ¡q¤ �¦� C � @ �½� E � ¶·C � @ £ @ ¨ GD@,@ �I� ¶�¡0¤¦¤�¾-¡0G � ¡qFO¤§@ �I�§¢Ì� C °u­�° ¨=° C � @¿C � CD¡q¤ £ @ ¨ G @#@ � ¶·C � @E �q¢O� E � ¡q¤%� [ ¦ Ó í [ �¦� N#LOJ¼¡ ¢=£ C � @dC � CD¡q¤ £ @ ¨ GD@,@ � ¶�C � @�B � ¤¦¥ ¢=� E � ¡q¤ æ ��ܨ�Àá#¦�Ýy�K�� [ ¦ Ó í [ �¦� ¡0¤ �½� N3L °�� @ � ¡q¤§¤�o� @ � GD@,EÎN#ì�¶ÊG � E å @ � C � GD@oK ° H �½�=� ² � C � ¡-CË¡�B � ¤§¥ ¢O� E � ¡q¤ � ¶OC � CD¡q¤ £ @ ¨ G @#@ ����/� @,G �I�q¢ ¡0C�E �¼� C <� "o¶ÊG^¡ � C �¦�q¢� ¶%C � @ �§¢ B � C � · ² @ ² � ¤§¤ �=� @XC �=�¦� ¶�¡ � CdF�@,¤ � ² °± @ ² � ¤§¤ � CD¡qG½CXF<¥ÀB=G @ � @ ¢ C �§¢=¨ ¡ �+� E¿B � C @,G �D�+� @ ¢ C ��� C ³ � ¾ � @ ² � ¶ � @,@ £ µ Ái� ¤¦¤§@#G �,�<£ @ � J ² �O�¦�^�È�q¢ ¤¦¥ �+�M¢=�½��£ @#GB � ¤¦¥ ¢=� E � ¡q¤ �o� ¶ £ @ ¨ GD@,@ �ã" °��;<;<.�£ � /%���1;M�&4x��.%;�å�£4Q¡%å3;,C�� ¸=� G¬B �¼�½� C � ¾q@ �§¢ CD@ ¨ @#G � - X ¡ ¢=£ BOG � E¿@)B � ² @,Gf" ² � C �* � "<J�C � @� @#@ £ µ Ái� ¤¦¤§@#G �+�A£ @ ��Á VX � X ð ���d£ @,´ ¢ @ £ ¡ � ¶ � ¤¦¤ � ² �#÷

� �o� @uE¿@ �D� ¡ ¨ @ �¦� ¡ � @3 � @ ¢=� @ � ¶ �+� @ ¹R�,� @ ¢ C � ��- �-, X/././.MX �60 � �-,U! Z/Z/Z !Z�10W2 � °)�o� @�E¬@ � � ¡ ¨ @¿G @#BOG @ � @ ¢ C � C � @B � ¤§¥ ¢O� E � ¡0¤ � « � ( X�&i&i&ZX�� V ¯ � j� , ! Z/Z/Z ! � 0 2 � - �7, X/././.MX �60 � �7,( &i&�&*� �60VD&� �o� @X@ ¢=�,�<£O�§¢O¨¿� ¶�¡¬B � ¤¦¥ ¢=� E � ¡q¤�� «�|6¯���� C � @ � @3 � @ ¢=� @!�Þ� « � ¯ � � ^�× 0Ø °

ê C ���¿� F<¾ �§�M�=� C � ¡0C¬C � @iFO¤ �A�^º ¤§@ ¢O¨ C �s� ¶�C � @ �+�A£ @ ��Á V�X � X ð ����§ � " V °2�o� @iE¿@ �D� ¡ ¨ @À¤§@ ¢O¨ C � @3 � ¡0¤ �C � @ ¢¼� E5F�@,G � ¶�-�µ ¤ �q¢O¨�� @3 � @ ¢=� @ �I� ¶ ¢O�q¢ µ ¢ @ ¨ ¡0C � ¾q@ �§¢ C @ ¨ @#G � C � ¡-C �½� E�C � ¡0CXE �¼� C J7¡ ¢=£ C �O���X¢<� E5F�@,GC � G ¢=�o�M� CdC � F�@ � V ! �V � °Ë¸%�¦¢ ¡0¤¦¤§¥MJA¶ÊG � E �o� @ � GD@,E�N3ì � ¶ å @ � C � GD@5K ° HAJ¼C � @ £O�¦� CD¡ ¢=� @ � ¶%C � @ �+�A£ @ �¦� ¡0Cd¤§@3¡ � C« ¡ � C � ¡0¤¦¤§¥�@+»O¡ � C ¤¦¥ ¯�« N�! �ð ¯*§�°�± @ ² � ¤§¤ � � E¿Eu¡0G �T� @�C � @�BOG � B�@,G C � @ ��� ¶7C � @ �+�A£ @ � �O� G C ¤¦¥qJ<F � C�F�@,¶ � GD@ £O�q�¦¢O¨� � JA¤¦@+C �=�d�,�q¢=� �¦£ @,G�¡ �^�O�q��� @ � ¶%B=¡qGD¡qE¿@+C @#G � ² �O���^���¦�d� � E¿@ ² � ¡-C � ¤¦¤ �=� CDGD¡0C � ¾q@ � ¶%C � @�B � ² @,G ��� ¶6C �O�����+�A£ @ °ß é�æ:è9à �2Ê��$êMê�Èòx�á�ë�â7èÁéJÇ�é�æ��$ê*��ÇBÊÉË ? � BOB �M� @ ² @ ² �¦� � C � @ ¢=�,�A£ @G+9@#¤§@#E¬@ ¢ C �:� ¶ �½� E¬@)¡0¤¦B � ¡0F�@+C °ê C � @,@#E �GD@#¡ � �q¢ ¡0FO¤¦@�C � ¡ �½º ¶ � G �+�A£ @ �o� ¶7¤¦@ ¢O¨ C ��§ � B � ¤¦¥ « + ¯ C � ¡-C � ¡ ¾q@I¤�¡0G ¨ @IE �¦¢O� E � E £A�¦� CD¡ ¢=� @ «1� ¡ ¥ §�� K ¯ ² � C �¡ �o� Eu¡0¤¦¤�¡ ¢ ¡q¤§B � ¡0F�@+C�¡ � B �¼� � � FO¤§@ °�ê CÄC � G ¢=�o�q� C � @#@ £ µ Ái� ¤¦¤§@#G �+�A£ @ �o� ¡ ¢�¨M� ¾M@ � �=�^�À�+�A£ @ � ² � C � ¡0¤¦B � ¡qF�@,C� �T� @�B � ¤¦¥ « ¤ �q¨ + ¯ J<F¼¥xC � @�¶ � ¤¦¤ � ² �§¢O¨x� @,C½C �¦¢O¨x� ¶�B=¡qGD¡qE¬@,C @#G �#÷6± @ �^�O�<�¼� @�-k� ³ ²Bã ë³ ²Bã�³ ²]ã ë ¡ ¢=£ "J�Þ¤ �q¨ > +u¡ ¢�£X � �=�^� C � ¡-C � V ! �� � ��+ °�¸=� GÄC �O���o�^�O�q��� @ � ¶6B=¡qGD¡qE¬@,C @#G � J ² @ ¢O� C @�C � ¡0CÄC � @ �+�A£ @ ��Á V�X � X ð � ¡ � F=¤ �A�^º ¤§@ ¢O¨ C �§ �]" V ��+ > ² �O���^� ² ¡ �Ä�q¢ @ � ¶ �M� G ¨q� ¡q¤ �#°��6� @ � C � Eu¡-C @�C � @ £O�¦� CD¡ ¢=� @MJ ¢=� C @�C � @ � V ! �� � + «� <� - ¯ V °��o�<�=�² @ � ¡ ¾M@ U� -ª+ (UE V �5-ü¤ �q¨ +o� ¤ �M¨ > + � ¤ �M¨ ¤ �M¨ +o�]ó « " ¯ ¡ � + W � § w ³ ¦ °��o�<�=� C �O��� ¶�¡0E � ¤§¥ � ¶ �,�<£ @ �o� ¡ �£A��� C^¡ ¢=� @ « N!�ó « N ¯½¯ � §�°��;<;<.�£ � /%���1;M�ý'q��.%;Vå)£&4�¡2å#;|m�� Å�� ²�² @ �,�q¢=� �¦£ @,GuC � @ � ¡ � @ ² � @,GD@iC � @iC � CD¡0¤ £ @ ¨ G @#@ � " °�êø¢� �=�^��� ¡ � @MJ ² @¬¡ �D�½�A�+� ¡-CD@5E¿@ �D� ¡ ¨ @ � ² � C � B � ¤§¥ ¢O� E � ¡0¤ ��� ¶�C � CD¡q¤ £ @ ¨ GD@,@x¡-CXE �¼� C ¡ ¢=£i�¦¢=£A� ¾ �¦£A� ¡0¤ £ @ ¨ G @#@¡-CRE �¼� C×"�!�N �¦¢ @,¾q@#G ¥ ¾ ¡qG � ¡0F=¤§@ °üå @,CG¼ « -wX X�" ¯ � }<« � ( X�&i&i&ZX�� V ¯ � [ % � % �l X L � � % � "���¡ ¢=£ ¤§@,Cº « - X Xt" ¯ �c� ¼ « -wX X�" ¯ � °��o� @ � @#@ £ µ Ái� ¤¦¤§@#G �+�A£ @ ����Á V�X � X ð ¡0GD@ £ @ �D� G � F�@ £ ¡ � ¶ � ¤§¤ � ² �#÷

á0µ æ à

Page 38: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� �o� @�E¿@ �D� ¡ ¨ @ � ¡0GD@�¡ � @3 � @ ¢=� @ � ¶Pº « -wX Xt" ¯ @,¤¦@,E¿@ ¢ C �Ë� ¶ > ð £ @ ¢O� C @ £ ��- ä � ä ^y¿ � V�X � X ð � °%�o�=�¦� E¬@ � � ¡ ¨ @�¦� ¡ � � �A�+� ¡-C @ £ ² � C � C � @�B � ¤§¥ ¢O� E � ¡0¤� « � ( X�&i&i&¨X�� V ¯ � jä ^y¿ � VX � X ð � - äO� � ,( �i���*� �60V &

� �o� @ @ ¢=�+�A£A�¦¢O¨ü� ¶uC � @ýE¿@ �D� ¡ ¨ @ ���È� C � @#¾-¡0¤ � ¡-C �§�M¢ ¡-Cû¡0¤¦¤xB �q�¦¢ C � �~� > V ð J �1° @ ° JxC � @ � @3 � @ ¢=� @�#� « � ¯ � � ^�× 0Ø °�o�O��� ¥ � @#¤ £O� ¡ �,�<£ @ � ¶ÄFO¤ �A�^º ¤¦@ ¢O¨ C � " V ¡ ¢=£ E¿@ �D� ¡ ¨ @¬¤§@ ¢O¨ C � º « -wX Xt" ¯l°¿�6� @ � C � Eu¡-CD@¬C � @ £A��� C^¡ ¢=� @ � ¶C � @ �,�<£ @ ² G � CD@ � p�« "�!9N ¯ � q ² � C � q �4"q!ûN °��o� @ ¢ F¼¥ �o� @ � GD@,E�N#é � ¶�C � @ å @ � C � GD@�K ° HAJMC � @ £A��� C^¡ ¢=� @� ¶6C �O���o�+�A£ @ �¦� ¡-Co¤¦@#¡ � C�" V �Hå « Nq! q � " ¯+°�ç�¨ ¡ �§¢ C � @ � @,C½C �§¢O¨¬� ¶7B=¡0G^¡0E¿@+CD@,G � Eu¡ ¥uF�@ � � E¿@ ² � ¡-C �,�q¢ ¶ ���½�¦¢O¨=°? � ² @ ¨q� ¾q@X¡ ¢ @+»O¡0E¿BO¤¦@ � @,C½C �§¢O¨¿� ¶%B=¡qGD¡qE¿@+C @#G � C �¬� ¤¦¤ �=� C G^¡-CD@IC � @�B � ² @#G � ¶7C �O�����+�A£ @ ÷ß é�æ:è9à �rÊ��$êMê�Èòx�á1ësâ�èÁéJÇ�é�æ��$ê*��ÇBÊÉË:«��o�=�¦�I��� C � @ � G �§¨M�§¢ ¡q¤ � @+C C �¦¢O¨À� ¶ËC � @xB�¡0G^¡0E¿@+CD@,G ���¦¢ C � @¬B�¡0B�@,G ��� ¶ � @,@ £¡ ¢�£xÁi� ¤§¤¦@,G ° ¯5± @d¤§@,C�"u�üKX¡ ¢=£ B ���^ºJ �d- °��o� @ ¢ º « - X X^K ¯ �5� � ¤ «# XU- ¯�« C � ¡-C ³ � G �¦¨q� C - µUC � @d¾ � ¤ � E¿@ � ¶C � @ Ý ¡0E¿E �¦¢O¨ F=¡0¤¦¤ �§¢w} L%X,N#� V � ¶%GD¡ £A�§��� ª°ë¯:± @�Eu¡ ¥u¤ � ² @,GoF �q�O¢=£ C �O�¦�  � ¡ ¢ C � Cª¥RF<¥ � V � � °Ë�o� @ £A��� C^¡ ¢=� @� ¶%C � @ �+�A£ @ �¦� K V � � °Ë�o�<�=� C � @ ��Á V�X � X > �+�A£ @ ¨M� ¾M@ � ¡�ß K V X � V � � XDK V � � â > �,�A£ @ -�)|�� ¬ ���i�:ñ���~�� �d�R�i���

è�@+¶ � G @ �+�M¢=� ¤ �=£A�¦¢O¨ C �A£ ¡ ¥ ³ � ¤¦@ � C � GD@ ² @ ¨q� ¾q@ �q¢ @¿E � GD@5@,»A¡qE¿BO¤§@ � ¶ �+�A£ @ � J ² �=�¦�^� ¡ ¨ ¡ �§¢ C � G ¢��M� CXC � F�@� B�@ �+� ¡0¤ � ¡ � @ �X� ¶ � @#@ £ µ Ái� ¤¦¤¦@,G �+�A£ @ �,°Ì«��o� @�BOG @ � @ ¢ CD¡-C �§�M¢È� @,GD@ �¦�:£O�Íí @,GD@ ¢ C:¶ÊG � E C � @ ² ¡ ¥ ² @ £A�¦£9� C �¦¢¤¦@ � C � GD@ °ë¯æ ¡ �  � @ �oÝ ¡ £ ¡0Eu¡0G £ ² ¡ �o�¦¢ C @,GD@ � C @ £��¦¢i�½� E¿@ �,�q¢=� C G �=� C �§�M¢=�o� ¶ � @#¤Í¶zµ � G C �=�q¨q�M¢ ¡0¤�Eu¡-CDG ��� @ � ² � C � ¡q¤§¤U@ ¢ C G � @ �F�@ �¦¢O¨ �xN � Gu!�N °��o� @X@ ¢=� �O�¦¢O¨u�+�M¢=� CDG ��� C �¦�q¢�� ¤¦@#¡ £ C �¬¢=�¦� @�@,GDG � G½µ �+� G GD@ � C �¦¢O¨:�+�A£ @ � ¡ ¢=£ ² @ £ @ � � G � F�@IC �O�¦��+�M¢O¢ @ � C �¦�q¢À� @#G @ °

A ;@B�*%�Ê!#�1��*4õ7���¼� j�§ ¤ §paue-_úalkòsuô � } " � % � kOIIe�Ý ¡ £ ¡0Eu¡0G £ E¿¡0C G � » k h " � % � } �xN#Xi!�N#� h+w-aXe-yzy �tX ­�e-j�fô¥ô?¡ � § ( K Y gO\,a \ ( kOI�_zg=\§ ¤ §Þk�fM\+j�_1kz_úpoaue-_úalkòs�KÄe0j�fÀe-yzy7e0alkz_zg{a¿\,_úk�]5kOI�a \<dq`Ay§e-a�kzj�_ \<d¼\+a5e0alkz_zg{a¿\,_úk�]�R� � @ ² @ £ ¡0B=BOG � BOG � ¡0C @,¤¦¥qJ¼C � @�G � ² �Ä� ¶�¡ ¢�§ ¤ §ÈÝ ¡ £ ¡qEu¡0G £ Eu¡-CDG � » ¨q� ¾q@X¡¬F �¦¢ ¡0GD¥ �+�A£ @ � ¶7FO¤ �A�^º ¤§@ ¢O¨ C �?§ J² � C ��§ý�,�A£ @ ² � G £O�¿«Ê�ú° @ ° J%¡ÀE¬@ � � ¡ ¨ @¿¤§@ ¢O¨ C �È� ¶�¤ �q¨G§6¯+°R�6�i¨ @+CXC �=�¦� ¾ � @ ² J ¢O� CD@xC � ¡-C:@#¾q@#G ¥G � ² � ¶ 7��¦�© �=� C�¡¬F �§¢ ¡0GD¥R¾q@ � C � G « ² � @#G @IC � @�F �§¢ ¡0GD¥R¡0¤¦B � ¡0F�@+C�© ��� C � ¡qBOB�@ ¢=� C � F�@ } �xN@Xi!�N#��G^¡-C � @,G�C � ¡ ¢ C � @ �=� � ¡0¤} L2X,N#� ¯l°È�o�¼���x� ¤§@3¡0GD¤§¥ÈC � @ÀG � ² � ¶ � GDE ¡F �¦¢ ¡qG ¥ �+�A£ @ «Ê� ¶�E¬@ � � ¡ ¨ @R¤¦@ ¢O¨ C � ¤ �q¨G§ ¡ ¢=£ F=¤ �A�^º ¤§@ ¢O¨ C � §6¯l°�o� @:E �¼� C �§¢ C @#G @ � C �§¢=¨ ¡ � B�@ � C � ¶�C �O�����,�A£ @ ��� C � @ £A��� C^¡ ¢=� @ °��o� @5¶�¡ � C�C � ¡0C ô¥ô?¡ � § ( ��� @# �O� ¾-¡0¤¦@ ¢ C�C �� ¡ ¥ �¦¢O¨ C � ¡-CIC � @ �,�<£ @ ² � G £O� ¡qG @¬¡-C £O�¦� CD¡ ¢=� @x@+»O¡ � C ¤¦¥ §�� K¿¶ÊG � E�@#¡ �^�� C � @,G -X�6�À� @#@5C �O�¦� J ¢O� CD@5C � ¡-CIC � @« �gX ­¼¯ C � @ ¢ CDG ¥ � ¶ ô¥ô?¡û��� [ ® ë ° ( " ��ë " % ë °Ä¸O� G�¡ ¢ ¥ª+�JAC � @5 � ¡ ¢ C � Cª¥)" �Oë " % ë �¦� @ � C � @,GJ�xN � G$!�NMJ ² � C � !�N�¦¢=£A��� ¡-C �§¢=¨ " ��ë 3�p" % ë ¡ ¢=£ �xN �§¢�£A�¦� ¡-C �§¢O¨ " ��ë ��" % ë °5¸O� G�� 3� ­ J ² @ � ¡ ¾q@ [ ® ë ° ( " �Oë " % ë � LOJ�¡ ¢=£ C �O�¦�� E¬B=¤ � @ � C � ¡-Cd@+»O¡ � C ¤¦¥ §�� K � ¶6C � @ � � E¿Eu¡ ¢=£=� ¡qG @J�xN�¡ ¢=£ @,»A¡ � CD¤§¥¥!�N � ¶�C � @ �½� E¿Eu¡ ¢�£O� ¡0GD@u�xN °�êø¢ C � G ¢C �=�¦� ¥ � @,¤ £O� C � ¡0CX¶ � GIC � ¡0C � ¡0¤§¶·C � @ �+�<� G £A�¦¢ ¡-CD@ � +�J6" ��ë ��" % ë ¡ ¢=£Ì�½� C � @ �,�A£ @ ² � G £O�I�+� GDGD@ � B �M¢=£A�¦¢O¨ C �C � @J�1C � ¡ ¢=£!­ C � G � ² � ¡ ¨ GD@,@ �q¢ @+»O¡ � C ¤¦¥ §�� K �+�<� G £A�¦¢ ¡0C @ �#°�o� @#G @�¡qG @ � @#¾q@,G^¡0¤ ² ¡ ¥ � C � ¡ �O¨ E¿@ ¢ CËC �=�¦�Ä� F<¾ �§�M�=�Ë�,�<£ @�¡ ¢�£ ¡0¤¦¤ � ¶UC � @ � @�¡qG @ �¦¢ C @#G �^� ¡ ¢O¨ @3¡0FO¤¦¥5GD@+¶Ê@#G GD@ £ C �¡ ��Ý ¡ £ ¡0Eu¡0G £��+�A£ @ �,°�¸=� G �q� G�B � GDB �¼� @MJ ² @ ² � ¤¦¤7´O»�C � @5¶ � ¤¦¤ � ² �¦¢O¨R�+�A£ @ � C � F�@ Ý ¡ £ ¡0Eu¡qG £��+�A£ @ � F�¡ � @ £�q¢ ¡ ¢P§ ¤ §ÌÝ ¡ £ ¡0Eu¡0G £ E¿¡0C G � » ô9°

á0µ æ ì

Page 39: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

A ;@B�*%�Ê!#�1��*4õ7�¦� �ok¼b \,j9e0jק ¤ §yo5eqfMe�aue-a f?aue-_úalkòsfôwKË_zg=\goxeqfMe�aue-a fÀ]^w#fM\¬w�h5m,y§w#]gð�y§\,j�dq_zg=§/K6Ý ¡ £ ® KkOI�_zg=\5m,kzj�e0alp)]^w#fM\ Y g=w�I,\x]^w3fq\ Y w-a f�Ixe-a \5_ÊgO\5a w Y I:w*hô � Y kz_Êg �xN IIa \9N�y§eM]D\^fÀm+p L IXe0j�f !�N IIaD\<N�y§eq]^\^f�m,pN I �KÄe-j�fu_ÊgO\¬]^w�a�N�y§\ia¿\,j=_LI5w*hX_ÊgO\5a w Y I5w�hôpR' �-�21Ä� å3�Ê!3����* õ7�¦�çn w-a�\ib \,alp§�Il`=]Dgu_zg=e-_�e-jQ§ ¤ §�o5eqfMe�aue-a fQaue-_úalkòs¿\�sMkOIl_EIgK6_ÊgO\Wo5eMfqe�a¿e0a fx]^w3fq\�Ý ¡ £ ®kOI5eR«E§ X½¤ �q¨�« K §6¯ X ® > ¯ > �½]^w3fq\SR' �-���)( �o� @xFO¤ �A�^º ¤¦@ ¢O¨ C � ¡ ¢=£ E¿@ �D� ¡ ¨ @:¤¦@ ¢O¨ C � ¶ � ¤§¤ � ² F<¥ £ @+´ ¢O� C �¦�q¢6°�± @ � ¡ ¾M@5¡0¤ � � ¡0G ¨q� @ £ C � ¡0C�C ² ��+�A£ @ ² � G £=� C � ¡0C �+� GDGD@ � B �M¢=£ C �£A��� C �§¢=� CxG � ² �I� ¶oC � @ Ý ¡ £ ¡0Eu¡0G £ Eu¡0C G � » £A�Íí @,G �§¢µ§�� K�B=¤¦¡ � @ �#°)Å�� ² � ¶' ��� ¡ �,�<£ @ ² � G £È�,� GDG @ � B �q¢=£O�§¢O¨ C � ¡�G � ² � ¶oC � @REu¡-C G � »Ì¡ ¢�£ ' �Ë��� ¡ �,�A£ @ ² � G £È�,� GDG @ � B �q¢�£A�§¢=¨ C � C � @�+� E¿BO¤§@#E¿@ ¢ C � ¶�¡XG � ² � ¶�C � @�Eu¡-C G � »�J0C � @ ¢u� ¶�C � @ �+� G GD@ � B �M¢=£A�¦¢O¨ G � ² � ¡qG @oC � @ � ¡qE¿@qJ0C � @ ¢ C � @ �,�<£ @ ² � G £O�£A�§í @#GÄ@#¾q@#G ¥ ² � @#G @@ßM¡ ¢�£u� ¶6C � @ �+� GDGD@ � B �M¢=£A�¦¢O¨ G � ² � ¡0GD@ £A�§í @#G @ ¢ C·C � @ ¢ C � @ �,�A£ @ ² � G £O�·£O�¦� ¡ ¨ G @#@ ² � @ ¢ @#¾q@#GC � @ �+� GDGD@ � B �M¢=£A�¦¢O¨ G � ² � ¡ ¨ G @#@qJ<F � CdC �O�¦� ¡0¤ �½�¬� ¡0B=B�@ ¢=� @+»O¡ � C ¤¦¥ §�� K:C � E¿@ �,°Ë�o� @XBOG � B �M� � C �¦�q¢ ¶ � ¤¦¤ � ² �#°

± @ ¢O� ² B �q�¦¢ C�C �i�M¢ @¬¶�¡0E � ¤¦¥ � ¶ �+�A£ @ � ² � C � C � @R¡0F � ¾q@¿B=¡qGD¡qE¿@+C @#G � C � ¡-C ² @R¡ � C � ¡q¤§¤¦¥ º<¢O� ² � ¶ -)Å�� CD@C � ¡-C � ¶ ² @¿C^¡ º @¬C � @ � @#@ £ µ Ái� ¤¦¤§@#G �+�A£ @ ��Á V�X ( X > ² � C � -�¾ ¡qG � ¡0F=¤§@ � ¡ ¢=£ C � CD¡q¤ £ @ ¨ G @#@�N � ¾q@,G:¡�F �§¢ ¡qG ¥¡0¤¦B � ¡qF�@,C#J�C � @ ¢ ² @ ¨ @+Cx¡sß K V XU-k��N@XDK V � ( â > �+�A£ @MJ ² �=�¦�^�&���x� ¶oC � @�¶ � GDE ß § X ¤ �M¨�« K §6¯ X §�� K â > ° ? �� C �¦�² � G C � ² �O� ¤§@�¡ � º<�§¢=¨x� ¶7C �O���d�¦� ¡ Ý ¡ £ ¡qEu¡0G £��+�A£ @MJ �ú° @ ° J ��� C � @,GD@X¡ ¢��O¢=£ @#G ¤¦¥ �§¢O¨uÝ ¡ £ ¡qE¿¡qG £ Eu¡-C G � » °ê CuC � G ¢=�R�q� CRC � ¡-CuC � @ ��Á VX ( X > �+�A£ @ �u£A�&�+� E¿@�¶ÊG � E�¡ ¢2�O¢�£ @,GD¤§¥ �¦¢O¨ûÝ ¡ £ ¡0Eu¡0G £ E¿¡0C G � » °ü�7�&£A�&� �GD@ � ¡q¤§¤�C � ¡0C�C � @xE¿@ �D� ¡ ¨ @ �o� ¶�C � @ � @,@ £ µ Ái� ¤§¤¦@,G �+�A£ @ �+� G GD@ � B �q¢=£ C �)�+� @ ¹R�+� @ ¢ C �è ) X�&i&�& X è V G @#BOGD@ � @ ¢ C �¦¢O¨C � @5B � ¤¦¥ ¢=� E � ¡q¤ \¿«�|6¯ � è ) � [ V� ° ( è � � � °�Å�� ² � ¶ ² @ �+�M¢=�½��£ @#G �q¢ ¤¦¥)C �O�¼� @ �,�A£ @ ² � G £O���,� GDG @ � B �q¢=£O�§¢O¨ C �è ) ��LOJAC � @ ¢ ² @ ¨ @,C�¡ �+� ¤§¤¦@ � C �¦�q¢�� ¶ �,�<£ @ ² � G £O� C � ¡0C £A�§í @#G �¦¢ @+»O¡ � C ¤¦¥ � ¡q¤Í¶�C � @:BO¤�¡ � @ � J�¡ ¢�£)���½�¦¢O¨ C � @,E¡ � C � @�G � ² � ¥ � @,¤ £O� C � @ Ý ¡ £ ¡0Eu¡0G £ Eu¡0C G � » °ç�� ¡ ¢ ¡ � �¦£ @ ¢=� C @¿C � ¡-C�C � @ �=� � ¡q¤ �+�q¢�� CDG �=� C �¦�q¢Ì� ¶ Ý ¡ £ ¡0Eu¡0G £ E¿¡0C G �¦� @ � ² � C �µ§ F�@ �§¢O¨ ¡�B � ² @,G � ¶�K �¦��¦¢=£A�=� C � ¾q@qJ ² � C �Pô V J<C � @5K V ¤ K V Ý ¡ £ ¡qEu¡0G £ Eu¡-CDG � »�F�@ �¦¢O¨R£ @+´ ¢ @ £ ¡ �#÷

ô ( �èç N NN !�N�é ¡ ¢�£ ô V !�( �êç ô V ô Vô V ! ô V é &

�)|�� ¡R`iñ ñò��~�õ

± @ ³ ¾q@ � @#@ ¢ ¡ ¢<� ExF�@#G � ¶ £A�Íí @,GD@ ¢ C �+�A£ @ � ² � C �Ì�¦¢=�,� E¿B=¡0G^¡0F=¤§@xE¬@#G � C �#°¿�o� @ � @,@ £ µø? � ¤ � E �q¢Ì�+�A£ @ �I� ¡ ¾M@� BOC � E¿¡q¤ £A��� C^¡ ¢=� @5C � E¿@ � � ¡ ¨ @x¤¦@ ¢O¨ C � F�@ � ¡ ¾ �§�M� GXF � C�GD@# �O� G @¬¤¦¡qG ¨ @x¡q¤§B � ¡0F�@+C �#°¿Ý ¡ £ ¡0Eu¡0G £��,�<£ @ � ² � G º� ¾q@#G�¡uF �¦¢ ¡qG ¥�¡0¤¦B � ¡qF�@,C#J�F � C � ¡ ¾q@�¾M@,GD¥)B �<� G�GD@,¤�¡-C �§�M¢=� �O� BiF�@+C ² @,@ ¢ E¿@ �D� ¡ ¨ @�¤¦@ ¢O¨ C � ¡ ¢=£ FO¤ �A�^º ¤¦@ ¢O¨ C ��°Ý ¡qE¿E �¦¢O¨I�+�A£ @ �%� ¡ ¾M@·¡ ¨M�<�<£ G @#¤¦¡0C �¦�q¢=� �O� B:F�@,C ² @#@ ¢ E¿@ � � ¡ ¨ @·¡ ¢=£ FO¤ �<�^º ¤¦@ ¢O¨ C � J-F � C �M¢ ¤¦¥ �qí @#G%¡ £A��� C^¡ ¢=� @� ¶ æ °¬êø¢È¨M�q�¦¢O¨ ¶ � G ² ¡qG £ ² @ ² � ¤¦¤Ë¤ �<�qº ¶ � GX¶�¡qE � ¤ � @ �X� ¶ �+�A£ @ � ² �O���^� E¿¡ �§¢ C^¡ �¦¢ ¡ �+�M¢=� CD¡ ¢ CXGD¡0C �¦� F�@+C ² @,@ ¢E¿@ �D� ¡ ¨ @�¤§@ ¢O¨ C � ¡ ¢=£ FO¤ �<�^º ¤§@ ¢O¨ C � J ² �O� ¤§@�¡q¤ � � E¿¡ �§¢ C^¡ �¦¢O�§¢=¨ ¡ �,�q¢=� CD¡ ¢ C�G^¡-C �¦� F�@,C ² @#@ ¢¿£A��� C^¡ ¢=� @o¡ ¢=£ FO¤ �<�^º¤¦@ ¢O¨ C ��°

á0µ æ é

Page 40: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

������������������ ��!#"%$&��')(+*�!,�-��.%/%'0!#�1��*2!3�&45�6.7�1*7�98:"%;<�=� > ?<@#BAC @#E5F�@,G:N3éOJOK0LMLONPRQ%SUT�VXW=Qpë üÚì*í�î ídú|ïXQTû

[6\^],_1`AaD\+a,bdceMf#gA`ih�`=fMe-j hU]+alk�m^\3b�ceMf#gA`ih�`=fMe-j

êø¢�å @ � C � GD@:á=J ² @ � B �qº @x¡0F �q� C�è ®�ÝÉ�,�A£ @ ���§¢ ¾-¡ ¨q� @�CD@,GDE �,°�Ý @,GD@ ² @ ¨q� ¾q@:¡ � @,¤§¶zµ �,�q¢ CD¡ �§¢ @ £ ¡ �#�+�M�O¢ C � ¶C � @ �+�A£ @ � ² � C � ¶ � ¤¦¤7B=G �<� ¶ ��� ¶ � C � B=¡qGD¡qE¿@+C @#G �#°ÄÅ�� CD@�C � ¡0C�C � @ � @:Eu¡ ¥ ¢O� C�F�@5C � @5E �¼� C ¨ @ ¢ @,G^¡0¤UB �M�D�½� FO¤¦@è ®�Ý��+�A£ @ � JAF � C � C � �O� ² � C � @ � B�@ �,� ´ � ¾M@,G �½�¦�q¢ C � ¡0C �¦�d�¦¢ C @#G @ � C �§¢O¨�°�7� GD@,E �¦¢=£ C � @XG @3¡ £ @#G ² � @#G @ ² @X¡0GD@ ¨M�q�¦¢O¨ J<GD@ � ¡0¤¦¤ �M� G £ @+´ ¢=� C �§�M¢�� ¶%¡Q"3µø¡0GD¥uè ®�Ý��+�A£ @ °�êø¢ C � @ � @ ¢=� C @ � J² @ ² � ¤¦¤U¶ �A�+�=�d�M¢ ¤¦¥ �q¢ C � @ � ¡ � @ ² � @,GD@IC � @�FO¤ �A�^º ¤¦@ ¢O¨ C ��� ¶7C � @ �,�<£ @�@# � ¡0¤ � " V ¶ � G � � E¿@ �¦¢ CD@ ¨ @,G�- ° (A ;@B�*%�Ê!#�1��*4õ7�EC ¨ n w-aZN�alk¼au\�N=w Y \,a " K�kzj�_ \<d¼\+a - e-j�fIkzj=_ø\�d¼\,aTò2K�_zg=\ è ®�Ýs�+�A£ @·è ®�Ý ð X V�X & kOIowMm+_øe-kzj�\^f:e�Ih+w-yzy¦w Y I,b�[7\,_%§ �ñ" V e0j�fXy¦\+_È> ð 0 m^\�e-jÀ\�sM_ø\+j2I^k�w0j)w*hd> ð e-j�f�y§\+_~\u�7m^\d_ÊgO\:�ª\�sM_ø\+j�fq\^f� ß § X § ! «Dò !�N ¯ X ò â ð 0n�\^\^f�� hUw-y§w�a¿w0jÉ]Dw3fq\ûwMm+_øe-kzj�\^fÞm+p2\�b-e-y `=e0_1kzjVd6NOw0y p-j�w�axk�e0y¿I&w*h9fq\<d0aD\D\ûe0_�a¿w�I^_J§ ! òÉw�b-\,aX> ð 0 e-_�e0yzy_ÊgO\=NOw0kzj=_LIÈw*hX> ð 0 R e�g=\+j _ÊgO\9]^w#fM\ è ®�Ý ð X V�X & kOI_ÊgO\c> ð �<I^`=mLHÄ\,y§fµI^`=m^]^w3fq\ûw*hG\u�<Ri�±ïlj w-_ÊgO\,a Y w-aDf�IgKè ®�Ý ð X VX & � \u�9ðX> ® ð�R ê C �¦� @#¾ �¦£ @ ¢ C7¶ÊG � E�C � @ £ @+´ ¢O� C �§�M¢ C � ¡-C�C � @ �+�A£ @ �%� ¡ ¾M@ £A��� CD¡ ¢�� @ e-_7y§\^e�Il_Wò=°o«��o� @ �,�A£ @ �+�q� ¤ £5� ¡ ¾q@o¡�¤�¡0G ¨ @#G£A��� C^¡ ¢=� @qJ �½� C � @d¤ � C @#GD¡0C � GD@ �§¢u�+�A£A�¦¢O¨ C � @ � GD¥:GD@+¶Ê@#G � C �:ò ¡ � C � @ fq\�Ilkòd0j�\Df¿f0kOI^_øe-j�]^\�� ¶�C � @ �,�A£ @ °ë¯xÃ�� G ¨M� ¡q¤��� C � ¤ � ² @#G�F �q�O¢�£ C � @ £O� E¿@ ¢��½�¦�q¢� ¶ËC �=�¦�X�+�A£ @¿¡ � ¡u¶ �=¢=� C �§�M¢È� ¶ § ¡ ¢=£�ò9« ¡ ¢�£ - ¡ ¢=£ " ¯l°:�o� @¬G @3¡ £ @#GEu¡ ¥ ¢O� C�G @3¡0¤ �T� @ � E¬E¿@ £A� ¡0C @#¤§¥ ² � ¥¿C �O�����+�A£ @I@,¾q@ ¢R� ¡ � B �M� � C � ¾M@ £A� E¿@ ¢=� �¦�q¢ ¶ � G � Eu¡0¤¦¤ ò�°�± @ ² � ¤§¤�@+»ABO¤�¡ �¦¢² � ¥RC �O�¦���¦���½� · ¡ ¢=£��¦¢�£O�q�¦¢O¨R�½� J ² @ ² � ¤¦¤6¤ � ² @#GdF �M�O¢=£ C � @ £A� E¿@ ¢=� �§�M¢ F¼¥ § !�- «&ò !sN ¯l°o�o� @�GD@ � C � ¶C � @ ² G � C @ � B ² � ¤¦¤U¶ �A�+���d�q¢ ¡ a¬kzy§fX� E¬B=G � ¾M@,E¿@ ¢ CdF<¥�¡ £O£O�§¢O¨ G �q�=¨q� ¤¦¥ (ð - «Dò !ýN ¯ C � C � @ £A� E¿@ ¢=� �¦�q¢�°·�o� @�¦¢ CD@,GD@ � C �§¢ C �O��� E � ¤ £È� E¿BOG � ¾q@#E¿@ ¢ C ��� C � ¡-C �¦¢ C � @uF �¦¢ ¡0GD¥ � ¡ � @MJ�C �O��� FOG �§¢=¨M�I�=��� ¤ �M� @¬C � C � @ Ý ¡0E¿E �§¢=¨F �q�O¢=£ü« ¶ � G � Eu¡q¤§¤ ò¼¯ ¡ �5� BOB �M� @ £ C � C � @ /I� ¤¦F�@,G C½µ �Ë¡0G �½� ¡qE � ¾�F �q�O¢=£�° ? � C � @ � @ � �O� ² � C � ¡-CxC � @Àè ®�Ý�+�A£ @ �:m^\De0_ C � @ /I� ¤¦F�@#G½C µç�Ë¡qG � � ¡qE � ¾¿F �q�O¢�£Ì« ¡ ��£O� @#¾q@#G ¥ � C � @#Go¶�¡0E � ¤¦¥ � ¶ �,�A£ @ � ² @ º¼¢=� ² ¯l°å @,C �=�I� CD¡0G C ² � C � ¡ �½� E¿BO¤§@¬¡0G ¨q� E¿@ ¢ C �½�O� ² �¦¢O¨ C �O�¦�I�+�A£ @ � ¡ ��£A� E¬@ ¢=� �§�M¢ ¡-C�¤¦@#¡ � C § !f- «&ò !2N ¯+°�¸%� G � CGD@ � ¡q¤§¤6C � ¡0C�@#¾q@,GD¥)¶ �O¢=� C �§�M¢ ¶ÊG � E > ð 0 C �X> ð ��� ¡uB � ¤§¥ ¢O� E � ¡q¤ � ¾q@#G > ð 0 � ¶ £ @ ¨ GD@,@:¡-CIE �M� C § !2N °��o�<�=�C � @ � B=¡ � @ � ¶ÄB � ¤¦¥ ¢O� E � ¡0¤ � ¶ÊG � E > ð 0 C �@> ð �¦� ¡ > ð µ ¤ �§¢ @3¡0G � B=¡ � @ � ¶ £A� E¿@ ¢=� �§�M¢ @,»O¡ � CD¤§¥ §�°¬± @ ² ��� � C �º<¢O� ²ü² � ¡-C ��� C � @ £A� E¿@ ¢=�½�¦�q¢�� ¶7C � @ �½� F � B�¡ � @ � ¶%B � ¤¦¥ ¢O� E � ¡0¤ �o� ¶ £ @ ¨ G @#@X¡0C�E �M� C § ! ò�° è � C ¢O� ² ¢O� CD@C � ¡-C�C � @5GD@ � C G ��� C �¦�q¢ C � ¡-CX¡RB � ¤¦¥ ¢O� E � ¡0¤ w « � ¯ � [ ® �¨(� ° ) w � �y� � ¡ ��£ @ ¨ GD@,@:¡0C�E �M� C § ! ò)�¦� @# �O� ¾-¡0¤¦@ ¢ C�C �� ¡ ¥ �¦¢O¨ C � ¡-CoC � @ �,� @ ¹R�+� @ ¢ C � w � E �=� Co@# � ¡0¤ � @,G � JM¶ � GÙ��� }�§ ! «&ò !9N ¯ Xi&i&�&¨X § !ûN#� °�­ ¡ �^�)�½�=�^�)�+�q¢�£A� C �§�M¢��� ¡ � �§¢=¨ ¤¦@¬¤ �¦¢ @#¡qG �,�q¢=� C G^¡ �¦¢ C � ¾M@,G > ð 0 J�F � C�C �O��� C G^¡ ¢�� ¤�¡-CD@ �I�§¢ C � ¡)FO¤ �A�^ºi� ¶�- ¤ �¦¢ @#¡qG �,�q¢=� C G^¡ �¦¢ C �I� ¾q@#G> ð ° ? �§¢=� @ ² @ � ¡ ¾q@ ò !&N �½���^� FO¤ �A�^ºA�Ä� ¶ �+�M¢=� C G^¡ �¦¢ C � J¼C � @XG @ � CDG ��� C �§�M¢ C � ¡-CoC � @I¶ �O¢�� C �¦�q¢��o� ¡ ¾q@ £ @ ¨ G @#@�¡0CE �M� C § ! ò BO¤�¡ � @ � ¡-CXE �¼� CZ- «Dò !ÞN ¯ ¤ �¦¢ @#¡qG �,�q¢=� C G^¡ �¦¢ C �#°I�o�<�=� C � @¬GD@ � � ¤ÍC �§¢=¨)� B=¡ � @ � ¡ ��£A� E¿@ ¢=� �¦�q¢ ¡0C¤¦@#¡ � C § !�- «Dò ! N ¯l°��o� @:¡qG ¨M� E¿@ ¢ Co¡qF � ¾M@ ���o�¦¢ ¶ � GDEu¡0¤úJ¼F � C�@#¡ � ¥¿C � ¶ � GDE¿¡q¤ ��� @ « ¡ ¢=£)�§¢ ¶�¡ � C �½� E¬@ � ¶6C � @�¦¢O¨ GD@ £A� @ ¢ C � ¡qG @I@,¾M@ ¢)�§¢=� ¤ ��£ @ £ ¤¦¡0C @#G �¦¢ C � @ � @ ¢O� C @ �^¯l°Ë¸=� GDEu¡0¤ �T�#�§¢O¨ C � @�¡qG ¨M� E¿@ ¢ C�¤¦@#¡ £O� C � C � @�¶ � ¤§¤ � ² �¦¢O¨F �q�O¢=£�°

' �-�21Ä� å3�Ê!3����* õ7�ECyCbTñ ;V¡��ý.7�1$&;<*�å3����*p¢·��/%*7.j� e�g=\)]^w3fq\ è ®�Ý ð X V�X & g=e�I�f-k¼au\,j%Ilk�w-jÞe-_�y§\^e�Il_ " V !- «&ò !ýN ¯�R�7�I� E¿BOG � ¾q@ËC � @oF �M�O¢=£ ² @ ² � ¤§¤O¡qG ¨M� @ÄC � ¡0C ¢=� CË¡0¤¦¤¼C � @ �,�q¢=� C G^¡ �¦¢ C � ¡0F � ¾q@o¡0GD@ �¦¢=£ @,B�@ ¢�£ @ ¢ C °�êø¢ B=¡0G C ���+� ¤¦¡qG² @ ² � ¤¦¤ � �O� ² C � ¡0C�C � @ �+�M¢=£A� C �¦�q¢ C � ¡-C w � ��L¬¶ � G���� « " V !2N ¯ ! ­R� E¿BO¤ � @ � C � ¡0C �+� @ ¹u�,� @ ¢ C w � ª ��L¿¶ � G¹BòiÁ�ÃLÌ¿À9Á�½ Õ�Æ�Ô�¾�È$óiÌ¿»�Ï�Ä�ÁLÓ�¾GÀ�½�ÈgÆLÆ�Ì¿À�Èg½Lô�õHö¥À*É�ÇS¾�ÆZÒ�÷ ÏOø Í]ùEú ü�Ä�Í�ÂSÁ�º�ÆL¾�¾�»SÉ�Ã�¾�ÈgÆ�É�»�Á�ÉÙÇ�É�Æ�É�Ø2ºOÖ%Õ�É�Â�ŨÈg»iÁZÁ�ÓS¾�À�½�ÈgÆLÆ�Ì¿À�Èg½À*É�ÇS¾�Æ�Ä�ûEÂ�ÆLÁZÔ�Â�»SÀ*ÁLÂ�ÃL¾GÁLÓ�¾�À*ÉiÇ�¾*Æ�Ũ¾�É�ÍSÁ�ÈgÌ¿»uÈg»SÇ�Õ�É�Â9ü ½¿½VÏ�¾9Á�ÈÙÀ*ÉiÇ�¾GÊÈtÁ�À<ÓSÌ¿»�ÏqÁLÓ�¾GÀ*½�ÈgÆ�Æ�Ì¿À�Èg½@Ô�ÈgÃ<ÈgÊ�¾9ÁL¾�ÃLÆBý

Ã�¢ è ®�ÝÉ®Ä�<£ @ � µúá¼L

Page 41: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� � � « " V !2N ¯ !µ" ­)�O¢=£ @,G�C � @5GD@ � C G ��� C �¦�q¢ C � ¡-C w Eu¡qB �> ð 0 C �X> ð °��o�O��� ¡q¤§¤ � ² �d�=� C � GD@ �,� ¾q@#G �½� E¬@ � ¶C � @I¤ �M� C £A� E¿@ ¢=�½�¦�q¢�� JO¡ ¢=£R¨M� ¾M@ ���=� C � @XGD@# �O� G @ £ F �q�O¢�£U°Ë�6�¿£A�u� � ² @�´�G � C ¢ @,@ £ C �¿�O¢�£ @,G � C^¡ ¢=£ C � @XG � ¤¦@C � ¡-C > ð BO¤�¡ ¥ � ² � C �O�§¢@> ð 0 °

�)|$; þ "  x��~���`��qþ " V± @ � ¡ ¾M@ � @,@ ¢��O� ²Þ² @ � ¡ ¢R¨q� ¶ÊG � E C � @�´�@,¤ £h> ð C �5� C � @,»¼CD@ ¢=� �¦�q¢h> ð 0 °�« ?<@#@ å @ � C � G @ Å�� C @ ��� ¶ ç ¤ ¨ @,F=GD¡Xµå @ � C � G @�K ° H ¯l°6êø¢ ?<@ � C �§�M¢ L�C � @,GD@qJ ² @ £ @ �D� G � F�@ £ ¡ � ¡ ¢=�q¢O��� ¡q¤¼GD@,B=G @ � @ ¢ C^¡-C �§�M¢5� ¶ > ð 0 ¡ � ¡ ¢ -)µ £A� E¿@ ¢=� �¦�q¢ ¡q¤¾q@ � C � G � B�¡ � @ � ¾M@,G > ð J ² �=�¦�^�i�+�M¢ CD¡ �¦¢=� C � @ � G �§¨M�§¢ ¡q¤�´=@,¤ £R> ð ¡ � ¡ �q¢ @,µ £O� E¿@ ¢��½�¦�q¢ ¡q¤ �½� F � B�¡ � @ °Å�� ²ù² @ �§¢ ¾M@,G CxC � @i � @ � C �¦�q¢�° ? � BOB �M� @ � � E¿@ �q¢ @ ¨q� ¾q@ �5�=� C � @À´=@,¤ £y> ð 0 ¡ ¢=£ ¡ � º<� ¶ � G¬C � @�@,¤¦@,E¿@ ¢ C ��+� G GD@ � B �q¢=£A�¦¢O¨ C � C � @oF=¡ � @Ë´�@,¤ £�> ð °�® ¡ ¢ ² @ � FOCD¡ �¦¢ C �O���%� � FA´�@,¤ £ ² � C �O�M� C�G @,¶Ê@,GDG �¦¢O¨ C ���M� G �+�q¢�� CDG �=� C �¦�q¢ ã±Þ� ¡0C �¦� C � @ � CDG �=� C � GD@ � ¶�¡ � � FA´�@,¤ £c> ð �¦¢ C � @�F �¦¨q¨ @,G�´=@#¤ £c> ð 0 ã ç GD@�C � @ � @ ² @#¤§¤§µ £ @+´ ¢ @ £)� FA©ª@ � C �o�¦¢=� �¦£ @¡5´=@,¤ £ J � G £A� @ � ¡x´=@#¤ £c> ð 0 �+�M¢ C^¡ �¦¢ Eu¡ ¢ ¥ �,� B � @ ��� ¶ > ð 3�� ¡-C �§¢=¨ ¡qG �M�O¢=£R�¦¢=� �¦£ @ � C^ã �o� @ � @I¡qG @X � @ � C �¦�q¢��C � ¡-C ¢O�À� @,¤§¶zµ G @ � B�@ � C �¦¢O¨ ¡q¤ ¨ @,FOG^¡ ��� C ² �M� ¤ £ ¡ � º · � � ² @ ² � ¤¦¤ °R«1ç GD@#¡ £ @,G �+� Ex¶ � G½C^¡0FO¤¦@ ² � C � ´ ¢O� C @x´=@#¤ £O�� ¡ ¢À� ¡-¶Ê@#¤§¥ �½º<� B)C �O����� @ � C �§�M¢�° ¯� @ � ¡0¤¦¤%C � ¡0C�@,¾q@#G ¥�@#¤§@#E¬@ ¢ C7��� > ð � ¡0C ��� ´=@ � C � @¬BOG � B�@,G Cª¥�� ð �ø� °5± @ � ¡ ¢ ¤ �<�Mº ¶ � GI@,¤¦@,E¿@ ¢ C �X�¦¢�> ð 0� ¡-C ��� ¶Ê¥ �¦¢O¨ C �=�¦� BOG � B�@#G½Cª¥ °R�6� G ¢=�X�M� C�C � @,GD@R¡0GD@¬@,»O¡ � CD¤§¥w" � ¶ÄC � @ � @R¡ ¢�£ C � @ � @¿¶ � GDE�C � @ � � FA´=@#¤ £E> ð �¦¢> ð 0 °�± @ ² � ¤¦¤�BOG � ¾q@�C �O��� F�@,¤ � ² JOF � Cd´=G � C�¤§@,C �=��� @,@ ² � ¥ � C �¦� GD@#¡ �½�M¢ ¡0F=¤§@�C � ¡0CdC � @5G �<� C �o� ¶U� ð !w���üL� �O�q� ¤ £ ¶ � G E�¡u´=@#¤ £�°�ê C �¦� @,¾ ��£ @ ¢ C�C � ¡-C � ¶S� ð �Ñ�2¡ ¢�£ A ð �¼AËJ�C � @ ¢s« ��A ¯ ð �¬��As¡ ¢=£i� � C � @5G �¼� C ��� ¶� ð !���¡qG @ � ¤ �¼� @ £¿�O¢=£ @#G·E � ¤ÍC � B=¤ ��� ¡0C �¦�q¢�° è � C ² � ¥ �¦�I« �f�?A ¯ ð �5�Q��A7ã ± @�BOG � ¾q@oC �O���·�¦¢ ¡�BOG � B �M� � C �¦�q¢C � ¡-C ² � ¤§¤�F�@ � @,¾q@#GD¡q¤�C � E¬@ �o�§¢ C �O�¦� ¤§@ � C � G @ °

' �-�21Ä� å3�Ê!3����* õ7�EC%m [7\,_j> ð m^\ReJHÄ\,y§fiw�h¿]^gOe0a eq],_ø\+alkOIl_úk�] 5 RQï+jûw0_zg=\+a Y w0a f�IgK 5 kOI¿e�N�alk¼a¿\)e-j�f "=�Ñ5 � Re�gO\,jQh+w0ax\�b-\,alpRj�w0j2�øj�\<d¼e-_úk¼b \ÿ�KÄe-j�f �qX�Aµ� ( ð KËkz_ÄkOI�_ÊgO\¬]^e�I,\:_ÊgOe0_�« ���bA ¯ �����5�P���G�bA~��� R' �-���)( ± @ � C^¡0G C ² � C � ¡ ¢ @,¾q@ ¢ E � GD@¬@,¤¦@,E¿@ ¢ CD¡qG ¥�¶�¡ � C °5¸O� GI@#¾q@#G ¥�á4� > ð J%5?��á � L « ² � @,GD@£5?�Sá �¦�© �=� C �½�O� G½C � ¡ ¢�£ ¶ � GÙá�� �i�i�i�6á�J ² � C � 5 �+� B � @ �·� ¶Zá �§¢ C � @,GD@ ¯l°��o� @ � � E¿BO¤¦@ � C ² ¡ ¥¬C �¿� @,@�C �O��� ¶�¡ � C ��� C � ¡0C¡ £=£A� C �§�M¢)�¦¢@> ð �¦� © �=� C�¾M@ � C � Gd¡ £O£A� C �¦�q¢��§¢@> �� ¡ ¢=£ C � @ � � E � ¶ 5 �,� B � @ �o� ¶%¡ ¢ ¥�¾q@ � C � G �¦¢@> �� ����� @#G ��°Å�� ²û² @·E � ¾M@�C � BOG � ¾ �¦¢O¨ C � @·BOG � B �M� � C �¦�q¢�°%Å�� CD@ËC � ¡-C � C �¦� CDG � ¾ � ¡q¤0¶ � G ÿ �ÞL ° ? � J ² @·B=G � ¾M@�C � @ÄBOG � B �M� C �¦�q¢¶ � G�C � @ � ¡ � @ ÿ � N °dêø¢ C �O����� ¡ � @ « ���yA ¯ �o� [ � � ° ) � � � � �©���y�ÞAZ� °�Å�� ² ¢=� C @5C � ¡0Cq5 £O� ¾ ��£ @ � � � �M� ¶ � G�@,¾q@#G ¥���2ß 5=!ÞN,â ° ? �§¢�� @�52á ��L¿¶ � G�@,¾M@,GD¥×áµ� > ð J ² @ � ¡ ¾q@ � � �M� �©���y�#AZ��� LR¶ � G�@,¾q@#G ¥����sß 5×!2N,â�¡ ¢=£ ² @5¡0GD@�q¢ ¤§¥R¤¦@+¶zC ² � C � C � @ � ¡ � @ � ��� } L%XL5 � ² �O���^�À¨M� ¾M@ �#÷�« ���bA ¯ ���,�P��bA~� °�o� @�BOG � B �M� � C �¦�q¢�¢=� ² ¶ � ¤¦¤ � ² � F¼¥ �§¢=£O�=� C �§�M¢À�M¢cÿ0°Ë¸=� G ÿ +ýKOJ ² @ � ¡ ¾M@

« �P�)A ¯ ��� � «½« �P�)A ¯ � ¯ ��� · ,� « � � �bA � ¯ � � · ,� « � � ¯ ��� · , � « A � ¯ ��� · ,� � ��� �bA ��� &Å�� ²þ² @�¡qG ¨M� @I¶ � GDE¿¡q¤§¤¦¥¿C � ¡-CdC � @�G �<� C �o� ¶U� ð !w� £A� ¶ � GDE C � @ �½� FA´=@,¤ £c> ð � ¶ > ð 0 °

Ã�¢ è ®�ÝÉ®Ä�<£ @ � µúá�N

Page 42: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

' �-�21Ä� å3�Ê!3����* õ7�EC{æ e�g=\+a \Èe-a \�\�s<eq],_úy p " \,y§\�au\,j=_LI � � > ð 0 I+e0_1kOI±h^p-kzjVd � ð � � e0j�fÌ_ÊgO\�I+\$h+w-a�a _ÊgO\Il`=mEH�\+y¦fO> ð w�h^> ð 0 R' �-���)( ± @ ³ ¾q@u¡0¤¦GD@#¡ £ ¥�¡qG ¨M� @ £ C � ¡0CIC � @¿G �<� C � ¡0GD@ � ¤ �¼� @ £�O¢=£ @,G�¡ £O£O� C �§�M¢ ¡ ¢�£ E � ¤ÍC � B=¤ ��� ¡0C �¦�q¢�°5�o�<�=�C � @�G �<� C �o� ¶U� ð !w��¶ � GDEù¡x´=@,¤ £U°�ê C � �A¹R� @ � C � ¡0G ¨q� @�C � ¡-CdC � @ � ¡qG £A�¦¢ ¡q¤ � Cª¥ � ¶7C �O��� ´=@#¤ £À��� " °ê C ��� @#¡ � ¥ C � � @,@�C � @,GD@¡0GD@¡-CRE �¼� C?"È@,¤¦@,E¿@ ¢ C � � �§¢P> ð 0 � ¡-C �¦� ¶Ê¥ �§¢=¨ � ð !,� � LOJ � �§¢�� @�C � @ � @�¡0GD@G �¼� C ��� ¶ËC � @ £ @ ¨ G @#@Q"RB � ¤¦¥ ¢O� E � ¡0¤U� ð !µ� °5�7��� @#@:C � ¡-CXC �O��� B � ¤§¥ ¢O� E � ¡q¤ � ¡ � "uG �<� C � J ¢=� C @xC � ¡-CX@,¾q@#G ¥@,¤¦@,E¿@ ¢ C � ¶ > ð 0 ��� ¡&G �¼� C � ¶�� ð 0 !ñ� ° ¸O� G C � @,GDE � G @ ² @ � ¡ ¾q@6� ð 0 !ñ� � « � ð ! � ¯ �È" « � ¯ X ² � @,GD@" « � ¯ �Ñ� ð 0 � ð �µ� ð 0 � >�ð �Ñ�i�����w� ð �ýN ��� ¡5B � ¤¦¥ ¢O� E � ¡0¤ � ¶ £ @ ¨ GD@,@�" V !6" °Ë�o�<�=� @,¾M@,GD¥¬@#¤§@#E¿@ ¢ C � ¶ > ð 0��� ¡u@ � C � @,GI¡uG �<� C � ¶�C � @5B � ¤¦¥ ¢=� E � ¡q¤ � ð !�� � G � ¶U" « � ¯+° ? �¦¢=� @¬¡-C�E �M� C�" V !µ"x@#¤§@#E¿@ ¢ C �I� ¡ ¢ F�@5G �<� C �� ¶F" « � ¯ J ² @ � ¡ ¾q@IC � ¡0C¶" « � ¯�� ¡ � @+»O¡ � C ¤¦¥×" V !�"xG �<� C � JA¡ ¢=£ � ð !w� � ¡ � @,»A¡ � CD¤§¥×"xG �¼� C �#°

± @ �+�q¢�� ¤ �=£ @ÀC � ¡0CuC � @iG �<� C �¿� ¶u� ð !Ñ� �¦¢�> ð 0 £ @+´ ¢ @�C � @ � � FA´�@,¤ £y> ð � ¶ > ð 0 �=¢O�  � @#¤§¥ ° �o�<�=� C � @� B�@,G^¡-C �§�M¢)� ¶%GD@ � C G ��� C �¦¢O¨ ¡ �+�A£ @ �¦¢@> ® ð 0 C �!> ® ð ���d¢O� C�¡0GDF � CDGD¡qG ¥ «1�½���^� ¡ ��� ¡ ¥qJO¡ � G @ � CDG ��� C �§¢O¨ C � @ �+�A£ @XC �¼ ® ¶ � G � � E¿@�¡qG F � CDGD¡qG ¥ �½� F � @,C[¼ � ¶ > ð 0 ¯+°�Å @+»<C ² @�@+»<C @ ¢=£u�q� G �O¢�£ @,G � C^¡ ¢=£O�§¢O¨5� ¶ � � FA´=@#¤ £O� C � ¶ �O¢=� C �¦�q¢=�Eu¡0BOB �§¢O¨ > ð 0 C � > ð °�)|�_ <?`i�������,�x����ð0~��xñ þ " V �%� þ "± @X´=G � Cd@+»<C @ ¢=£�ö G � B �M� � C �§�M¢=� á ° N3Kx¡ ¢=£ á ° N æ C � C � @ � ¡ � @ � ¶7¶ �O¢�� C �¦�q¢��,°

' �-�21Ä� å3�Ê!3����* õ7�ECVõ,n w-aGh^`Aj�]+_úk�w-j2I w X � ÷�> ð 0 Wê> ð 0 KË_ÊgO\qh+w-yzy§w Y kzj�dRg=w-y§fMb

� Rx« w � � ¯ ð � w ð � � ð R� R w ð � w k h:e-j�f)w0j=y puk h�_ÊgO\5a e0j�d¼\5w*h w kOI5]^w-j�_ e0kzj�\^f�kzjX> ð R± @ � E � C·C � @�B=G �<� ¶ � �¦¢=� @ � C �¦��� C G^¡ �¦¨q� C½¶ � G ² ¡0G £5¨M� ¾M@ ¢Rö G � B �¼�½� C �¦�q¢=� á ° N3K�¡ ¢=£ á ° N æ °6± @ ¢O� ² E � ¾q@dC � C � @BOG � B �M� � C �§�M¢ C � ¡-C ��� C � @ � G � » � ¶7C � @ � E¿BOG � ¾q@ £À£A� E¿@ ¢=� �§�M¢ ¡ ¢ ¡0¤¦¥ �½���#°

' �-�21Ä� å3�Ê!3����* õ7�EC%ÿ h�`SN#N=w�I,\ w « � ¯ � [ ® � (� ° ) w � �y� kOI¬euN=w-yÍp-j�w�a¬k�e-y·w�b \,aV> ð 0 auetN#N�kzj�d > ð 0 _øw�> ð R�h�`SNy�N=w�I,\V­ X ÿ � } N@Xi&�&i&¨X § !&K{� e0a \fIl`=]Dg�_ÊgOe0_�ÿ �ç" ­�« E �A£2«±§ !2N ¯ ¯iR6e�g=\+j w�� ��L k h w % �ÉL R n `Aal_zg=\+a�auw-a \w ® � ( � > ð R' �-���)( ? �¦¢=� @ w Eu¡0B �|> ð 0 C �R> ð J ² @xE �=� C � ¡ ¾q@ w ð � w «�ö G � B �M� � C �¦�q¢ á ° N#á=J ö ¡qG½CXK ¯l°�ä��½�¦¢O¨)ö G � B � µ� � C �§�M¢ á ° N,á=J ö ¡0G CuNqJ ² @ ¨ @+C:C � ¡-C w « � ¯ ð � [ ® �¨(� ° ) « w � ¯ ð � � ð ° ? �¦¢=� @uC �O��� @+»AB=¡ ¢=� �§�M¢Ì� ¡ � CD@,GDE �:� ¶ £ @ ¨ G @#@¤�¡0G ¨ @,G�C � ¡ ¢6§ ! NMJ ² @¬G @ £A�=� @:C @#G E � ¡0F � ¾q@ �=�½�¦¢O¨ C � @ ��£ @ ¢ C � Cª¥¥� ® �|��C �)¨ @+CIC � ¡0C w ð CD¡ º @ � C � @5¶ � G E[ ® � >� ° ) « w � ¯ ð �y� ð ��� ² 8 � ® � (%�&�Z� « w ® � ( ¯ ð � ® �¨( °x«��o� @ �+� @ ¹R�+� @ ¢ C w ® �¨( ¢ @,@ £O� C � F�@5C GD@#¡0C @ £i� @,B�¡0G^¡-C @#¤§¥ �½�¦¢=� @² @ £A�M¢�³ C � ¡ ¾M@�� ® �¨(��NqJ-F � C �M¢ ¤¦¥J� ® �4� °%Å @,¾q@#G½C � @,¤¦@ �D� @#¡ �^� C @#G E � ¡ ¢ F�@�¾q@,G � ´=@ £ C � F�@ �+� G GD@ � C °ë¯�Å�� ²�=� �§¢=¨ C � @I¶�¡ � C�C � ¡-CoC � @I¶ �O¢�� C �¦�q¢�� w ð ¡ ¢�£ w ¡qG @ �¦£ @ ¢ C ��� ¡q¤ � ¾M@,G > ð 0 J ² @ ¨ @+C�C � ¡0C w ð) � w ) J w ð® �¨( � w ® � (¡ ¢�£ w ð % ��� ² 8 � ® � (%�&� � w ð% °Ë�o� @�BOG � B �M� � C �¦�q¢ ¶ � ¤§¤ � ² � ¡ � ¡ � B�@ �+� ¡0¤ � ¡ � @ °

è�@+¶ � G @ ¨q�M�§¢O¨I�q¢ C � C � @�´ ¢ ¡0¤ � ¤¦¡ � E ¨q� ¾ �¦¢O¨ C � @dF�@+C C @#G�F �M�O¢=£¬�q¢ C � @ £A� E¿@ ¢=� �¦�q¢¬� ¶�è ®�Ý2�+�A£ @ � Jq¤§@,C ��� © �=� C@ ¢��½� GD@XC � ¡-C�C � @ �,�q¢=� C G^¡ �¦¢ C � ² @5¡0GD@X¤ �<�qº<�¦¢O¨ ¡-CI¡0GD@:¡0¤¦¤ y kzj�\^e0al°d± @5¡q¤§GD@#¡ £ ¥ �¦¢=� �¦� C @ £ C � ¡0C�C � @ �+� ¤§¤¦@ � C �¦�q¢

Ã�¢ è ®�ÝÉ®Ä�<£ @ � µúá<K

Page 43: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� ¶U¶ �=¢=� C �§�M¢=� Eu¡qBOB �¦¢O¨Y> ð 0 C �Y> ð ��� ¤ �§¢ @#¡0G3JqF � C �¦¢ ² � ¡0CÄGD@,BOGD@ � @ ¢ C^¡-C �¦�q¢ ã �o� @ ¢ ¡0C � G^¡0¤�G @#BOG @ � @ ¢ CD¡-C �§�M¢¿� ¶� �=�^� ¡¿¶ �O¢�� C �¦�q¢ w ÷L> ð 0 WÚ> ð ��� (��m� w « � ¯ � � ^�× Ø 0 ° è � C#J �¦¢�� �=�^� ¡ � ¡ � @qJ�¡0GD@ �+�M¢=� CDGD¡ �§¢ C �d� ¶�C � @:¶ � G Ew � �üLX¤ �¦¢ @3¡0G �¦¢ C �O��� GD@,BOGD@ � @ ¢ CD¡0C �¦�q¢ J « ² � @,GD@ w � ��� C � @ �+� @ ¹R�,� @ ¢ C � ¶y�y� �¦¢ C � @dB � ¤¦¥ ¢=� E � ¡q¤OGD@,BOGD@ � @ ¢ CD¡0C �¦�q¢� ¶ w ¯ ã �o� @�¡ ¢=� ² @#G �¦� ¡ ¹ G Eu¡-C � ¾M@qJA¡ ¢�£ C � @�BOG � B �M� � C �§�M¢ F�@,¤ � ² ¡ � � @,G C � C �O�¦�#°

' �-�21Ä� å3�Ê!3����* õ7�ECA [7\,_ w � [ ® �¨(� ° ) w � � � m^\�eoN=w-yÍp-j�w�a¬k�e-y�auetN@N�kzj�dR> ð 0 _øwh> ð R�e�gO\,jý_zg=\i]Dw0j%Il_úa e-kzj�_w � �ùL kOI)eÌ]^w-j��l`Aj�],_1k�w0j2w�h�e-_uauw�Il_ - y kzj�\^e-a)]^w-j2Il_1a e0kzj=_LI�w-jý_zg=\R_ÊgO\?b-\D],_øw-a (P�l� w « � ¯ � � ^�× Ø 0 Rñe�gO\]^w-j�f-kz_úk�w-j w ® �¨( � L kOI5w-j�\:yÍkzj�\^e-a5]^w-j2Il_1a e0kzj=_ow-j�_ÊgO\�b-\D],_øw-a ( R' �-���)( �o� @i´=G � C�B=¡0G C ��� @3¡ � ¥ � ¶ ² @iGD@ � ¡0¤¦¤�C � @G �¦¨q� C�GD@,¤�¡-C �§�M¢=� �O� B � F�@,C ² @#@ ¢�> ð ¡ ¢=£�> ð 0 J�¡ ¢=£2�¦¢B=¡qG½C �¦�,� ¤¦¡qGdC � ¡-C�@#¤§@#E¿@ ¢ C ��� ¶ > ð 0 ¶ � G E�¡.-)µ £O� E¿@ ¢��½�¦�q¢ ¡q¤6¾M@ � C � G � B=¡ � @ � ¾M@,G > ð ° � � @ ² �¦¢O¨ (x¡ � ¡R¾q@ � C � G¶ÊG � E >2® ð 0 ¡ ¢=£ GD@ � ¡q¤§¤ �¦¢O¨ C � ¡0C �§¢ C @#G B � ¤�¡-C �§�M¢)��� ¤ �§¢ @#¡0G3J ² @ � FAC^¡ �¦¢ C � ¡0C w � ��� ¡ > ð 0 �¦� ¡¿¤ �¦¢ @#¡qGo¶ � GDE �¦¢ ( °è � C �½�¦¢=� @ > V ð � ¡ ¢ F�@¿@#E5F�@ £O£ @ £�¦¢�> V ð BOGD@ � @,GD¾ �§¢O¨ ¤ �¦¢ @#¡qG � Cª¥qJ ² @ ¨ @+CIC � ¡0C w � ����¨M� ¾M@ ¢ Ex¥ª- > ð µú¤ �¦¢ @#¡qG¶ � GDE �o�§¢ ( °Ë�o� @ �+�M¢=£A� C �¦�q¢ w � �üL�© ��� Cd¶ � G � @ � ¡0¤¦¤�C � @ � @�¤ �¦¢ @#¡qGo¶ � GDE � C � F�@ � @,G �=°¸O� GoC � @:¶ � G½C � @,GDE � GD@XB=¡0G C#JAGD@ � ¡0¤¦¤UF¼¥ ö G � B �M� � C �§�M¢ á ° N H:C � ¡-C w ® �¨( ��� ¡0¤¦GD@#¡ £ ¥R¡ ¢ @,¤¦@,E¿@ ¢ C � ¶ > ð ² �O���^���¦�¡ �M¢ @+µ £A� E¿@ ¢=� �§�M¢ ¡0¤ � � F � B=¡ � @ � ¶ > V ð M� > ð 0 °��o�¼��� C � @ w ® �¨( � L�¶ � G � @ �Ä�q¢ @I¡ £O£A� C �¦�q¢ ¡0¤�¤ �¦¢ @#¡qG �,�q¢=� C G^¡ �¦¢ C�q¢ C �=�¦��� B=¡ � @qJO¡ ¢=£ C �<�=�o�M¢ C � @X¾q@ � C � G�( °�)|$t Á � `i����,���ò��������#ñò�������+�¬� �5ð'Áe�¯¬ �d�R�i���

± @:¡0GD@ ¢=� ² GD@#¡ £ ¥¿C � BOG � ¾q@I¡ � CDG �M¢O¨ @#GÄF �q�O¢�£)�M¢ C � @ £A� E¿@ ¢=� �¦�q¢À� ¶�è ®�Ý��,�A£ @ �#°

n ;<$&$ ¡�õ6�LCA� e�gO\¿f-k¼au\,j%Ilk�w-j9w*h�_ÊgO\¬]^w#fM\ è ®�Ý ð X V�X & kOI5e0_·y§\^e�Il_ " V !ýN�!�- � & � > � � ð � (%�ð � R' �-���)( �o� @¬B=G �<� ¶ �¦�X� C G^¡ �¦¨q� C½¶ � G ² ¡0G £�¨q� ¾q@ ¢ ¡0¤¦¤ �q� G ² � G ºi�½� ¶�¡0G °x�o� @¬F�¡ � �¦�x�¦£ @#¡ �¦� C ���,�q¢=� ��£ @,GIC � @� B=¡ � @ � ¶7¡0¤¦¤�¶ �O¢=� C �§�M¢=� ¶ÊG � E > ð 0 C �´> ð J ² �O���^� ¶ � G E � ¡ > ð µ ¾q@ � C � G � B=¡ � @ � ¶ £A� E¿@ ¢=� �§�M¢×§�° � � @ ² �§¢O¨ C � @ � @¶ �O¢=� C �¦�q¢=� ¡ � B � ¤§¥ ¢O� E � ¡q¤ � ¶ÊG � E > ð 0 ß �Oâ J ² @dC � @ ¢ G @ � CDG ��� CËC � @,E�C �5� ¡ ¾M@ � @#G � ¡ � C � @ �,� @ ¹R�+� @ ¢ C �Ä� ¶ �y��¶ � G��� }�§ ! «&ò !ýN ¯ Xi&�&i&¨X § !ýN�� °�o� @ �+�M¢=£A� C �¦�q¢ C � ¡0C¬C � @ �+� @ ¹u�,� @ ¢ C � ¶�� ® �¨( �¦��� @,G �È� E¿B �¼� @ �¬�q¢ @À¤ �¦¢ @3¡0G �+�M¢=� CDGD¡ �§¢ Cu¡ ¢=£ GD@ £A�=� @ � C � @£A� E¿@ ¢=� �§�M¢�� ¶ËC � @ � B=¡ � @:C �?§ !ÞN °5�o� @¬G @#Eu¡ �¦¢O�§¢=¨)�+�M¢=£A� C �¦�q¢=� J �+� G GD@ � B �q¢=£A�¦¢O¨ C �À�,� @ ¹R�+� @ ¢ C �I� ¶�� ��¶ � G��� }�§ ! «&ò !ýN ¯ Xi&�&i&¨X § !ûKV�¼J¼¤¦@#¡ £ C � ¡-C�E �M� C�- �+�M¢=£A� C �¦�q¢=� @3¡ �^��°�Ý�� ² @#¾q@,G3J ² @ £A�M¢�³ C ¢ @,@ £ C �¿� E¿B �M� @¡0¤¦¤ � �=�^�Þ�+�q¢�£A� C �§�M¢=�#°ýêø¢ B=¡qG½C �¦�,� ¤�¡0G ² @ � ¡ ¢2�½º<� Bs@#¾q@#G ¥ "3C �Þ�+�q¢�£A� C �§�M¢�«1� C^¡0G C �¦¢O¨ ¡-C § !üKÌ¡ ¢�£ ¨M�q�¦¢O¨£A� ² ¢�¯�� �§¢=� @:C � @ � @¬¡qG @x@+»AB �q¢ @ ¢ C ��� ¶ËC � @5¶ � G E ÿ � «E§ !ÞN ¯ !p" ­ J ² � @,GD@ ­À��� ¡�B �¼�½� C � ¾q@ �§¢ CD@ ¨ @#G ° ? �¦¢=� @ÿ �|" «±§ !2N�! ­¼¯,« E �A£ «E§ !ÞN ¯½¯ J�F¼¥ ö G � B �¼�½� C �¦�q¢ á ° N HAJ�C � @ �+�q¢�£A� C �§�M¢ C � ¡-CIC � @ �+� @ ¹R�,� @ ¢ C � ¶G� � @3 � ¡0¤ �� @#G ���¦�5� E¿BO¤ � @ £ F<¥ÈC � @ �+�q¢�£A� C �§�M¢ C � ¡-C5C � @ �,� @ ¹R�+� @ ¢ C � ¶�� ® � (g� % @# � ¡q¤ ��� @,G �=°�o�<�=� C � @ �+�M¢=� CDGD¡ �§¢ C ��+� G GD@ � B �q¢=£A�¦¢O¨ C � C � @ �,� @ ¹R�+� @ ¢ C ��� ¶¨� ��¶ � GG��� }�§ ! «Dò !iN ¯ Xi&�&i& X § !�KV�¼J0¤§@3¡ £ C � ¡-C·E �M� C - � & � > � � ð �¨(U�ð �¤ �§¢ @3¡0G �,�q¢=� C G^¡ �¦¢ C �#°·�o�<�=� C � @ £A� E¿@ ¢=�½�¦�q¢�� ¶7C � @:GD@,Eu¡ �¦¢O�¦¢O¨u� B=¡ � @ ��� ¡-C�¤¦@#¡ � C § !2N�!�- � & � > � � ð �¨(U�ð � ¡ �� ¤�¡ � E¿@ £U°

± @ �+�q¢�� ¤ �=£ @ ² � C � C � @X¶ � ¤§¤ � ² �§¢=¨ C � @ � G @#E � � E¿E¿¡qG ���,�¦¢O¨ C � @�BOG � B�@#G½C � @ ��� ¶%C � @:è ®�Ý��+�A£ @ �,°

8:"%;<�=�-;<$ õ7�ECA���Qòm æH{/õ���{/õ�mwS �wn w0a�N�alk¼au\?N=w Y \,a " Kukzj=_ø\<dM\,agI - e-j�f9ò2KR_ÊgO\û]^w#fM\ è ®�Ý ð X V�X & kOIÌe0j� § X § !sN�!f- Ô � & � > � � ð �¨(U�ð Õ�X ò� ð ]Dw3fq\�K h+w0a§ �]" V RÃ�¢ è ®�ÝÉ®Ä�<£ @ � µúá æ

Page 44: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

à ¶=B=¡qG½C �¦�,� ¤�¡0G �¦¢ C @#G @ � C �¦� C � @ � ¡ � @q"J�üK�¡ ¢=£ @#¾q@ ¢<ò�°6êø¢ C �O���%� ¡ � @qJ3C � @�E¿@ � � ¥ � @ � ¤ �§¢O¨¼� ¡ ¢=£u3=�<� G £A��� ¡0BOB�@#¡qG¡ ¢�£ ² @XC � @X¶ � ¤§¤ � ² �¦¢O¨x¢=�¦� @ �+� G � ¤¦¤�¡0GD¥ ÷

4x�=�-�����L¡A� > õ7�ECA�Dn w-a�\ib-\+alpxkzj=_ø\�d¼\,a - e-j�f³ K%_zg=\�]Dw3fq\ è ®�Ý > X V�X > ¯ kOIXe ß § X § !�N�! «

³ !N ¯ ¤ �M¨Z§ X^K ³ â �½]Dw3fq\�Kh+w-a�§ �þK V Rç�� B �M�§¢ CD@ £9�q� C:@#¡0GD¤ � @#G#J6C �O���:��� B=¡qG½C �¦�,� ¤�¡0GD¤§¥ ¢=�¦� @qJ �½�¦¢=� @ � C ��� ¾M@,GD¥ � ¤ �¼� @¿C � C � @ Ý ¡0E¿E �§¢=¨ F �M�O¢=£ J%¶ � G�+�M¢=� CD¡ ¢ C ò JO¡ ¢=£R�¦¢ B�¡0G C ���+� ¤�¡0G�Eu¡-C �^� @ � C � @ Ý ¡qE¿E �¦¢O¨¿�+�A£ @ � ¶ £O�¦� CD¡ ¢=� @Iá « ¡ ¢=£ F<¥¿B �O¢=� C � G �§¢=¨ Eu¡0C �^� @ �B=¡qGD¡qE¬@,C @#G ��� ¶7C � @ Ý ¡0E¿E �§¢=¨R�+�A£ @ � ¶ £A��� C^¡ ¢=� @ æ ¡ � ² @#¤§¤ ¯l°

Áù�D�i�,�+�x�5~�� h �i�,� ���������

è �§¢ ¡0GD¥ è ®�Ý��,�<£ @ � ² @,GD@ £A���D�+� ¾q@#G @ £ �¦¢=£ @#B�@ ¢=£ @ ¢ CD¤§¥ÎF<¥ Ý��A�  � @ ¢O¨q� @,E ß á¼é â�¡ ¢=£ è �M� @ü¡ ¢�£ � ¡ ¥¼µ®Ä� ¡ �=£A�<� G � ß K æ â °Ë�o� @�@+»<C @ ¢=�½�¦�q¢ C � C � @ ¨ @ ¢ @,G^¡0¤ "3µø¡0GD¥ � ¡ � @ ���d£A� @XC �2/I� G @ ¢=� CD@ �¦¢ ¡ ¢=£ Þ � @,GD¤§@#GXß á¼K â °�o� @dBOG �<� ¶ ���¦¢ C � @ � @ ¢O� CD@ � ¡qG @ � G �¦¨q�¦¢ ¡0¤ °7�o�O��� B=G �<� ¶ ² ¡ ���¦¢=� B � GD@ £ F<¥x¡ � � E¿BO¤¦@ � @,¤§¶zµ �,�q¢ CD¡ �§¢ @ £¿£ @ �D� G � BOC �¦�q¢� ¶�è ®�Ý��+�A£ @ � F<¥ ����=£A�¦¨ @#G ä GDF=¡ ¢Oº @�ߧNqN H3â °s«��o� @ �M¢ ¤§¥ � �O� G C¬¡ ¢=£&� @,¤§¶zµ �,�q¢ CD¡ �§¢ @ £û£ @ �D� G � BAC �¦�q¢ûê:�,�q� ¤ £´ ¢=£ - ¯¬�o� @ � @ £ @ � � G � BAC �¦�q¢À� @#G @ �¦�d£O�Íí @,GD@ ¢ C �¦¢ C � ¡-C � C £A� @ �o¢O� C ¨M� C � C � @ ¸O�M� G � @#GÄCDGD¡ ¢=� ¶ � GDE «�� � E¿@+C �O�§¢=¨ê ¡0E�¡0¤¦¤¦@,G ¨q��� C �<¯l°�ç�¢ @#¡qG ¤ � @#G�¾M@,G �½�¦�q¢�� ¶�C � @ � @ ¢O� C @ ��� ¡ £ ¡uE � GD@:@,¤�¡0F � G^¡-CD@:BOG �<� ¶ °dê C ² ¡ � ¡0¤ �½� F �O¨q¨ ¥ -�o� ¡ ¢OºA� C �uç E ¢O�q¢À� ¡0µø? � Eu¡:¶ � G�B �q�¦¢ C �¦¢O¨¿�q� CoC � @XF �O¨=°�¸%� » �¦¢O¨ C � @IF �O¨ GD@ � � ¤§C @ £R�¦¢ C � @I´ ¢ ¡0¤ «1�½� E¿BO¤¦@,G ¯BOG �<� ¶ °

Ã�¢ è ®�ÝÉ®Ä�<£ @ � µúáMá

Page 45: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� ��������� �

������������������ ��!#"%$&��')(+*�!,�-��.%/%'0!#�1��*2!3�&45�6.7�1*7�98:"%;<�=� > ?<@#BAC @#E5F�@,G�K0á=JOK0LMLONPRQ%SUT�VXW=Q��

[6\^],_1`AaD\+a,bdceMf#gA`ih�`=fMe-j hU]+alk�m^\3b�cw3gOe�aQaueqf�c�e#g=f-k�e-j

�7�<£ ¡ ¥ ² @ ² � ¤§¤�CD¡0¤ º ¡qF �M� C ÷

� ç�� �¦£ @ �o�q¢P� @,@ £ µª? � ¤ � E �q¢��+�A£ @ �,°� ç�� ¥¼E¿BAC � C �¦�#�o� ¶ �+�A£ @ �#°� � ¡ ¢=£O� E �,�<£ @ �#°

�¿|#{ Ì×�������P¡��x�+�¬ñò�¬� �d�R�i���

�o� @#G @�¡0GD@IC ² � @# �O� ¾-¡0¤¦@ ¢ C ² ¡ ¥ � C � ¤ �<�qº ¡0C � @,@ £ µª? � ¤ � E �q¢À�+�A£ @ �,÷

� ­ ¾-¡0¤ � ¡-C �§�M¢È� ¶�B � ¤¦¥ ¢O� E � ¡0¤ �,÷x�o�O�¦�5�¦� C � @ £ @+´ ¢O� C �¦�q¢ C � ¡-C ² @ � ¡ ¾M@ � @#@ ¢9�§¢ C � @RBOGD@,¾ �¦�q�=� ¤¦@ � C � GD@ °ê C ³ �o�=�½� ¡0¤¦¤§¥RE � G @ �+�M¢ ¾q@ ¢=� @ ¢ CoC � B=G � ¾M@�C � @ � G @#E �o���½�¦¢O¨ C �O����£ @,´ ¢O� C �¦�q¢�°� ®Ä� @ ¹R�+� @ ¢ C ��� ¶�B � ¤§¥ ¢O� E � ¡0¤ �#÷ ? � E¿@ � B�@ �,� ¡q¤ � ¡ � @ ��� ¶ � @,@ £ µª? � ¤ � E �q¢È�+�A£ @ �£� ? ð X ® X ë « " ��� C � @ � �T� @� ¶UC � @X¡q¤§B � ¡0F�@+C « ´=@#¤ £�¯ J §��� C � @IFO¤ �<�^º ¤¦@ ¢O¨ C � JO¡ ¢=£ + �¦� C � @�E¿@ �D� ¡ ¨ @�¤§@ ¢O¨ C ��¯Ä� ¡ ¢ F�@ £ @ � � G � F�@ £ ¡ �¶ � ¤¦¤ � ² �#÷� �À;<*7;¼��¡A!3�=�?1·����>�*7��$&�L¡O�%� ç B � ¤¦¥ ¢O� E � ¡0¤ � « � ¯ � > ð ß �=â � ¶ £ @ ¨ G @#@ § !Y+ °� � ;VåSå�¡O��;)� �,� @ ¹R�+� @ ¢ C �o� ¶�¡¬B � ¤¦¥ ¢=� E � ¡q¤�� « � ¯�� ¶ £ @ ¨ G @#@�¤¦@ �D� C � ¡ ¢ + °� 0 *7'M��.7�1*7�T� �+� @ ¹R�+� @ ¢ C �o� ¶ � « � ¯ � « � ¯l°

�o�O����£ @+´ ¢O� C �§�M¢¿¨q� ¾q@ �7�=� ¾-¡0G �¦�q�=���+�A£ @ ��£ @,B�@ ¢�£A�§¢=¨I�M¢ ² �=�¦�^� � ² @oB ���^º�°6ê ¶ � �¦� ¡�B � ¤¦¥ ¢=� E � ¡q¤<C � ¡0C £A� ¾ ��£ @ �� ® !ÞNqJ�C � @ ¢ ² @ ¨ @,CX¡ ¨ @ ¢ @,G^¡0¤7¶�¡0E � ¤§¥ � ¶ �,�<£ @ �X� ¡q¤§¤¦@ £ Æ � ¥ � ¤ ���x�,�A£ @ �DÇO°:¸=� G �½� E¿@5¶ � G C � @,GXG @ � CDG ��� C �§�M¢=� J² @ ¨ @+C¬è ®�Ýù�+�A£ @ � J ² �=�¦�^�û�¦¢ C � G ¢&�+�M¢ CD¡ �¦¢ C � @ � B�@ �,� ¡q¤ � ¡ � @ ��� ¶ � ? �+�A£ @ �,°��7�£ @+´ ¢ @uC � @ ¨ @ ¢ @,G^¡-C � GB � ¤¦¥ ¢=� E � ¡q¤�¶ � GoC � @ � @ � ? �+�A£ @ � J ² @I´=G � C ¢ @,@ £ C �u�¦¢ CDG �A£A��� @IC � @ ¢=� C �¦�q¢À� ¶�¡¬BOG � E � C � ¾q@X@,¤¦@,E¿@ ¢ C � ¶ > ð °

H µ á¼H

Page 46: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

A ;@B�*%�Ê!#�1��*]ÿ��EC'� j2\,y§\ia¿\,j=_ ��� > ð kOIÀe BOG � E � C � ¾q@�@#¤§@#E¿@ ¢ C k h �qXF� > X�&i&i&¨X�� ð �¨( e0a \ie-yzy�_zg=\Àj�w0jOá3\+aDw\,y§\�au\,j=_LI:w�hX_zg=\�H�\+y¦f#Rê C �¦� ² @,¤¦¤§µ º<¢O� ² ¢ C � ¡0C�@,¾q@#G ¥¬´=@#¤ £À� ¡ � E¿¡ ¢ ¥RBOG � E � C � ¾q@X@,¤¦@,E¿@ ¢ C �,° /I� ¾q@ ¢ ¡¬BOG � E � C � ¾q@X@,¤¦@,E¿@ ¢ C��ÄJ ² @ � ¡ ¢£ @,´ ¢ @XC � @ ¨ @ ¢ @,G^¡-C � GÄB � ¤¦¥ ¢O� E � ¡0¤ � ¶ � G«0¼ ð X ® X ë ¡ � ¶ � ¤§¤ � ² �#÷

� « � ¯o÷ � ® �¨ë�� ° ( « �×!f� � ¯ &ä�� �¦¢O¨ C �O�¦� B � ¤¦¥ ¢O� E � ¡0¤ ² � C ��§ �Ñ"y!u��¡ ¢=£ � � �,��� J ² @ ¨ @,C%¡ ¢�� ? �,�A£ @ � ? ð X ® X ë °o«E� @ � ¡q¤§¤MC � ¡-C4� ( Xi&i&�& XF� ®¡0GD@xC � @ � @+C � ¶�B �M�§¢ C �I�M¢ ² �O���^� C � @¿B � ¤¦¥ ¢=� E � ¡q¤ �§¢ C � @¬´=G � C £ @+´ ¢O� C �¦�q¢Ì��� @,¾-¡0¤ � ¡-CD@ £U°ë¯&ç BOG �<� ¶ � ¶·C �O�¦�¶�¡ � C � ¡ ¢ F�@X¶ �q�O¢�£ ¡0CoC � @�@ ¢=£À� ¶%C �O��� ¤¦@ � C � GD@ °

�¿|lî g �^�%��~Ë���:�¬�Ù� �R�i���

/I� ¾q@ ¢P§9£A��� C �§¢=� C�@,¤¦@,E¿@ ¢ C � � ( X�&i&i&¨X�� ® ¡ ¢=£�§È¢O�M¢%� @#G � @#¤§@#E¬@ ¢ C � A ( Xi&�&i&¨XBA ® � ¶ > ð J=C � @ � yÍ_ \,alj�e0j=_��Ëw3fq\���d£ @+´ ¢ @ £ ¡ � ¶ � ¤§¤ � ² �,÷

� � ;Vå�åS¡O��;*� ö�� ¤¦¥ ¢O� E � ¡0¤H� « � ¯d� ¶ £ @ ¨ GD@,@X¤¦@ �D� C � ¡ ¢ + °� 0 *%'q��.%��*%�T�¶�ÐA ( � « � ( ¯ X�&i&i&¨XBA ® � « � ® ¯ � °êø¢ CD@,GDE ��� ¶ËC � @xE �§¢O� E � E £A��� C^¡ ¢=� @qJ � C ����� ¤§@3¡0G�C � ¡0CX¡q¤ÍCD@,G ¢ ¡ ¢ C �,�<£ @ � ¡0GD@5@# �O� ¾-¡0¤¦@ ¢ C�C � C � @ � ? �+�A£ @ �,°êø¢ B=¡0G C ���+� ¤�¡0G�¡ ¨q� ¾q@ ¢È�,�¼� G £O�§¢ ¡0C @ � ¶d¡ ¢ @ ¢=�,�A£A�§¢=¨ ¡ ¨q� ¾q@ ¢ E¿@ � � ¡ ¨ @ �¦¢ C � @u¡0¤§C @#G ¢ ¡ ¢ C �,�A£ @ �¦�X¢O�M¢ µ � @,G �� ¶�¡ ¢�£��M¢ ¤§¥ � ¶·C � @ � ¡qE¿@ �,�¼� G £O�§¢ ¡0C @ � ¶·C � @ � ?�@ ¢=�,�<£O�§¢O¨À� ¶ÄC � @ � ¡0E¿@¬E¬@ � � ¡ ¨ @ ���X¢O�q¢ µ � @,G �=°:Ý�� ² @,¾M@,G3JC � @I¡q¤ÍCD@,G ¢ ¡ ¢ C �,�A£ @�E �¦¨q� C � ¡ ¾q@ £A�§í @,GD@ ¢ C�B=G � B�@#G½C � @ �·�¦¢ CD@,GDE �Ä� ¶ � C �Ä� � FAµ �+�A£ @ �,°�ç��½� FOµ �,�<£ @ � ¶%¡ �+�A£ @ �¦�£ @,´ ¢ @ £ ¡ � ¶ � ¤¦¤ � ² �#÷å @,C£"��ÉK#ë °�± @ º<¢O� ² C � ¡-C > > ��� ¡ �½� FO´=@,¤ £i� ¶ > ð °X®Ä�M¢=� �¦£ @#G�¡ ¢ ß § X�+�X ò â ð �+�A£ @ \ ( °��o� @ > > �½� FAµ �,�A£ @� ¶ \ ( J £ @ ¢O� C @ £�\ > J ��� ¡ ¢ ß § X�+ � X ò�� â > �,�A£ @uC � ¡-C �+�q¢��½��� C �:� ¶�¡0¤¦¤ �+�A£ @ ² � G £=�:� ¶ \ ( C � ¡0C¬¡0GD@�¡q¤ � ��¦¢)> ®>«D\ > � \ ( ð > ®>6¯l° ? ���^� ¡ ¢È� B�@,G^¡-C �§�M¢� ¡ ¢ F�@ � ¡qG G � @ £��q� C �¦¢�¨ @ ¢ @#GD¡q¤6¶ � GI¡ ¢ ¥�B=¡ � G � ¶·´=@,¤ £?> �O(U� â > � > � J¡ ¢�£ C � @�G @ �½� ¤ÍC �§¢O¨u�,�<£ @ � ¡qG @ � ¡q¤§¤¦@ £À�½� FAµ1´�@,¤ £À� � FAµ �+�A£ @ �o� ¶7C � @ � G �¦¨q�¦¢ ¡0¤ �,�<£ @ °�o� @�GD@ � � ¤§C �¦¢O¨R�+�A£ @ �o� ¡ ¾q@XE �§¢=� E � E £O�¦� CD¡ ¢=� @:¡0Co¤¦@#¡ � C�¡ � E ���^� ¡ � C � ¡0C � ¶%C � @ � G �§¨M�§¢ ¡q¤ �+�A£ @ °ÄÝ�� ² @,¾q@#GC � @ � G5E¿@ �D� ¡ ¨ @¿¤¦@ ¢O¨ C � Eu¡ ¥�F�@RE ���^�&� Eu¡0¤¦¤¦@,G °�êø¢ ¶�¡ � C#J�¡�BOG �§� G �·� C ���:�=¢=� ¤¦@#¡qG5¡ � C � ² � ¥�C � @ � � FAµú´=@,¤ £� � FAµ �+�A£ @ � �O�q� ¤ £i�,�q¢ CD¡ �§¢ ¡ ¢ ¥ ¢O�q¢ µ � @,G � ¾M@ � C � G °dÝ�� ² @,¾M@,GoC � @ � G�B�@,G ¶ � GDE¿¡ ¢=� @ �¦��¢O� C�¡ � F=¡ £ ¡ �d� C�¤ �<�qºA��-Á ¡ ¢ ¥ �§¢ C @#G @ � C �§¢=¨ ¶�¡0E � ¤ � @ �d� ¶ �,�<£ @ ��� ¡ ¢ F�@ � FACD¡ �§¢ @ £ ¡ �d� � FAµú´=@,¤ £��½� FAµ �,�A£ @ �d� ¶ ç ¤ÍCD@,G ¢ ¡ ¢ C �,�<£ @ �#° è ®�Ý�+�A£ @ � ¶ � GDE �q¢ @ �½�=�^� @+»O¡qE¬B=¤§@MJ<¶ � G � � E¿@ � ¤¦@,¾q@#G �^�O�q��� @ � ¶4� ( Xi&�&i& X�� ® XBA ( Xi&i&�&¨X�A ® °� @3¡ £ @#G � E � GD@ �§¢ C @#G @ � CD@ £)�§¢ C �O�¦� E¿¡0C @#G � ¡0¤ � ¡ ¢ ´ ¢=£À� C �¦¢ ß à-áOJ ®Ä� ¡qBAC @#G�N3K-â °

�¿|�ì g �6õ)ñ h �%�:���+�d���xðÑ���R�i���

? � ¶�¡0G ² @ � ¡ ¾M@ � @,@ ¢ ¡¿¾-¡0G � @+Cª¥ � ¶ �+�A£ @ �,÷

ô ¡O$&$ ��*%�'q��.%; �o� @ � @ �,�<£ @ �o� ¡ ¾M@I¡ ¨M�¼�A£ G @#¤¦¡0C �¦�q¢=� �O� B�F�@+C ² @,@ ¢ +)¡ ¢�£?§ JAF � C òu����� Eu¡q¤§¤ °

H µ áyL

Page 47: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� z 'M��.7;Vå �o� @#¥�E¿@,@,CdC � @5? �¦¢O¨ ¤§@,C �q¢ F �q�O¢=£ JOF � C ¢ @#@ £ ¤�¡0G ¨ @X¡0¤¦B � ¡0F�@+C � ��� @ °ô ¡O.U¡O$p¡A�-.Þ'M��.7; ò � §�� KAJOF � C7+×�þ¤ �q¨G§ J �1° @ ° J�@ ¢=�,�<£O�§¢O¨��§¢=� G @3¡ � @ � C � @5¤¦@ ¢O¨ C �i� ¶%C � @:E¿@ �D� ¡ ¨ @�@,»AB � µ¢ @ ¢ C � ¡0¤¦¤¦¥ °

± @ � @ ¢=� @XC � ¡0C ¢O�M¢ @ � ¶%C � @ � @ �,�<£ @ ����� Æ ¨q�<�A£ @ ¢O�M�O¨q�=Ç J=F � C ² @ � ¡ ¾q@ ¢=� C £ @,´ ¢ @ £ ¡ �+�M¢=� @#BAC � ¶ Æ ¨q�<�A£OÇ�+�A£ @ �,°Ì�6�Ì£A�È� � J ² @ ¢ @,@ £ C �È� C ��£ ¥9C � @ e�Ilp�a�N�_øw-_úk�]�I5� ¶ �+�A£ @ �,°Ì�6�Ì£A�È� � J ² @ ² � ¤§¤ �+�M¢=� �¦£ @#G �¦¢ ´ ¢O� C @¶�¡0E � ¤ � @ ��� ¶ �,�A£ @ ��� � }<«±§ � X�+ � X ò � ¯ ð À ���� ° ( J ² � C � ¤ � E ����� }�§ � ���Dé °

A ;@B�*%�Ê!#�1��*]ÿ��Om e�gO\s« E¿@ �D� ¡ ¨ @ ¯ G^¡-CD@ w*hûe¥h+e�axkzy p�w*hû]^w#fM\�I�� � }¼«E§ � X�+ � X ò � ¯ ð À ���� ° ( K�fq\,j�w0_ \^f « «��6¯gKkOI2fM\EH·j�\^f�_øw�mD\ ¤ � E �¦¢ ¶ ��� �"! ë À® À$# R e�g=\ GD@,¤�¡-C � ¾M@ £A��� CD¡ ¢�� @ w*h%�/K9fM\+j�w-_ø\^f R «&�6¯gK9kOI2fM\EH·j�\^f�_øw�mD\¤ � E �§¢ ¶ �'� � ! & À® À(# RA ;@B�*%�Ê!#�1��*]ÿ���æi� h+e�axkzy pÀw*h5]^w3fq\�I��ÞkOI ¡ � ¥<E¿BAC � C ��� ¡0¤¦¤¦¥ ¨q�<�A£9k h « «&�6¯ X�R «&�6¯ �sL R±Þ� @ ¢ C � @X¶�¡0E � ¤§¥ ������� ¤¦@#¡qGĶÊG � E �+�q¢ CD@+»<C#J ² @ ² � ¤¦¤ � º<� B)C � @:¡qG ¨M� E¿@ ¢ C�¡ ¢=£ © �=� C�G @,¶Ê@,GoC � «É¡ ¢=£ R °Ã�¢ @ � ¶ÄC � @¿@#¡qG ¤¦¥ Æ �O� ¤§¥ ¨ GD¡ � ¤ �DÇR� ¶ �+�A£A�¦¢O¨ C � @ � G ¥ ² ¡ � C �À�,�q¢=� C G �=� C�¡ � ¥<E¿BAC � C ��� ¡0¤¦¤¦¥ ¨q�<�A£��+�A£ @ �,°x�o�O�¦�² ¡ � ¡ �^�O� @#¾q@ £ @3¡0GD¤§¥ �q¢�°�± @ ² � ¤§¤ � @#@ �§¢ C �O��� ¤¦@ � C � GD@�C � ¡0C � �=�^�i�+�A£ @ ��£A� @,» ��� C#J�¡ ¢=£��¦¢ C � @ ¢ @+»<C�¤¦@ � C � GD@² @ ² � ¤¦¤ �½�=� ² �O� ² C �u�+�M¢=� CDG ��� C�¡x¶�¡0E � ¤¦¥ � ¶�¡ � ¥<E¿BAC � C ��� ¡q¤§¤¦¥ ¨q�<�A£À�+�A£ @ �#°­ ¾M@,GD¥¿G @ �½� ¤§C �§¢��+�A£A�¦¢O¨ C � @ � GD¥xCD@ ¢=£=� C �¿� ¡ ¾q@I¡ ¢ ¡ � ¥¼E¿BAC � C �¦���§¢ CD@,GDBOG @,CD¡0C �¦�q¢ JA¡ ¢�£R� ¶zCD@ ¢ C � @�¡ � ¥<E¿BAC � C ���¾q@#G � �¦�q¢���� E �=�^� E � G @ � �=�,�,�§¢=� C °Ë¸=� Gd@+»O¡qE¬B=¤§@MJ<C � @5? �¦¢O¨ ¤§@,C �q¢ F �q�O¢=£9«E§ !Y+J�ÞNJ+ ò¼¯d� E¿BO¤ � @ �

R � N�!v«Q&? � E � ¤�¡0GD¤§¥MJOC � @ Ý ¡0E¿E �§¢O¨ F �M�O¢=£�� ¡ � ¡ ¢ ¡ � ¥<E¿BAC � C ���X�¦¢ CD@,GDBOGD@+CD¡0C �¦�q¢�°�� @ � ¡q¤§¤6C � ¡0C�C �O��� F �M�O¢=£i� ¡ ¥ � C � ¡0C¶ � GoF �¦¢ ¡qG ¥ �,�<£ @ � JAK ë � � ¤ « & � (> X §6¯Ù� K ® °Ëä��½�¦¢O¨ C � @�¡qBOBOG � » � Eu¡-C �§�M¢=� & � (> ¶*) ®> ¡ ¢=£ � � ¤ « 5 § X §6¯G¶ K ���� � ® J² @ � ¡ ¾q@

¸O� G"u�üK{X «ã� 7 ² RK ´ � N@&�o� @¬¡0F � ¾q@�F �q�O¢=£=� ¡qG @ � �O� ² ¢i�¦¢�¸%�§¨M� GD@xH ° N ° êø¢ C � @5GD@ � C � ¶%C �O��� ¤¦@ � C � GD@qJ ² @ ² � ¤¦¤ �½�O� ² C � ¡-CIGD¡ ¢=£A� EF �¦¢ ¡0GD¥ �,�<£ @ ��� ¡-C �¦� ¶Ê¥G«c+ N�! 7&« R ¯l°�± @ £O�q¢�³ C º<¢O� ² � ¶�¡ ¢ @+»ABO¤ �¦�,� C �,�q¢=� C G �=� C �¦�q¢ ¶ � G�¡ �,�<£ @ � ¡0C ��� ¶Ê¥ �¦¢O¨C �=�¦� F �q�=¢=£U°

�¿|�� ó ���,+ �#�3�Ì��~%�-�Èu ��~��%���:ñ�� Ö�È� `i���

�o� @ /I� ¤¦F�@,G C½µ �Ë¡0G �½� ¡qE � ¾�F �q�O¢=£s� ¡ ¥ � C � ¡0CxC � @,GD@ ��� ¡ ¢&�¦¢ ´ ¢O� C @À¶�¡0E � ¤§¥ � ¶ �+�A£ @ � � � ¡-C ��� ¶Ê¥ �¦¢O¨ « «���¯ +N�! 7&« R «���¯ ¯l°�± @ ² � ¤¦¤�BOGD@ � @ ¢ CoC � G @#@�BOG �<� ¶ � ¶ � GoC �O��� ¶�¡ � C °Ë�o� @ � @�BOG �<� ¶ � ¡qG @ £A� @XC �=÷

� /I� ¤¦F�@#G½C5ß æ L-âúJ ² �=�¿� �O� ² @ £ @ �D� @ ¢ C � ¡q¤§¤¦¥uC � ¡-C�¡¬G^¡ ¢=£A� E �+�A£ @ � ¡ � C �O��� BOG � B�@,G Cª¥� �Ë¡0G �½� ¡qE � ¾�ߧNqN3é â ² �O�u� �O� ² @ £ C � ¡-C�G^¡ ¢�£A� E ¤ �¦¢ @#¡qG �+�A£ @ �o� ¡ ¾q@�C �O��� BOG � B�@,G Cª¥ °� ±È�@� @ ¢�� G^¡-¶zC:ßÍN K-á-â ² �O�R�+�M¢=� CDG ��� C @ £ ¡ � Eu¡0¤¦¤ � B=¡ � @ � ¶%¤ �¦¢ @#¡qG �+�A£ @ � E �M� C � ¶ ² �O�M� @XE¬@#E5F�@,G � E¿@,@,CC � @ /I� ¤§F�@,G C½µ �Ë¡0G � � ¡0E � ¾¿F �M�O¢=£U°

H µ á<à

Page 48: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

. ./ /0 01 12 23 34 45 56 66 67 77 78 88 89 99 9: :;< <=> >> >??@ @@ @AAB BCD DEF FG GH HI IJ JK KL LM MN NN NO OO OP PP PQ QQ QR RR RS SS ST TT TU UU UV VV VWWX XX XYYZ Z[\ \]^ ^_` `ab bc cd de ef fg gh hi ij jj jk kk kl ll lm mm mn nn noop pp pqqr rst tuv vwx xyz z{ {| |} }

~~������ ��� �� � ��� �� ����� �� ������� �� �������� �� �� �� ���� �� ���� �� ¡ ¢£¤¥ ¦§¨ ¨© ªª««¬ ¬­ ­® ®¯°± ²³´µ¶ ¶¶ ¶··¸¹º º»¼ ¼½

¾ ¾¾ ¾¿¿À ÀÁ Á Â Âà Ãà ÃÄÅÆ ÆÆ ÆÇÇÈ ÈÈ ÈÉÉÊ ÊÊ ÊËËÌ ÌÌ ÌÍÍÎ ÎÎ ÎÏÏÐ ÐÐ ÐÑÑÒ ÒÓÔ ÔÕÖ Ö×Ø ØÙÚ ÚÛÜ ÜÝÞ Þßà àáâ ââ âããä ää äååæ ææ æççè èè èééê êëì ìíî îïð ðñò òóô ôõö öö ö÷÷ø øø øùùú úú úûûü üü üýýþ þþ þÿÿ������������������������� � ������������������������������������������������������������ !�!"#�#$%�%&'�'()�)*+�++�+,,-�--�-../�//�/001�11�1223�345�567�789�9:;�;<=�=>?�??�?@@A�AA�ABBC�CC�CDDE�EE�EFFG�GG�GHHI�II�IJJK�KLM�MNO�OPQ�QRS�STU�UVW�WW�WXXY�YY�YZZ[�[[�[\\]�]]�]^^_�__�_``a�aa�abb cdef

g�g�gh�h�h

i�ij�j

0

0.2

0.4

0.6

0.8

1

0.2 0.4 0.6 0.8 1

k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�kk�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k�k

l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�ll�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l�l

m�m�m�mn�n�n�n

oop�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�pp�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p�p

q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�qq�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q�q

No code in this region(Singleton bound)

RS codes

No binary code in this region

Hamming code

(Hamming bound)

binary rep ofRS codes

Randomcodes

δ

R

Hadamard code

rtsvuxwzy|{~}��v�x�

��������� ���������������v�����t����� �¡�¢���z��£¤���t���¦¥

§©¨«ª­¬x®°¯²±´³²µ¢¶|·´®¹¸º±²µ»®�¼v½ ¾¿¨«ª­À¿¶Á¼zÂö�¸�®¹³ÅÄÆ·t¨Ç±ÈµÉ¨­±È³ËÊ�±²µÌ®¹ª­®¹¾º®¹ÍαËÏ¢¨ÐÂÒÑÁ®Ó¸¿ÔÁ¯È®°®¹¸¢¨­ª«Àº½Õ°°¶Á¯Ò¸�¨­Í»ÔÖ±²¶�±Èµ¢®�¼�¶Õª­ª«¶|·t¨«Í¢ÔÏ¢¯È¶�Â¢×¢¯²®�³È½|±È¨«³�Ø»®¹³t±²µ¢®�¬x¶Á׻ͻ¸ÚÙ¿ÛÜÄzÝ�Þàß�á�âãÛvä�Û�ÄzÝ�Ýæå�çz½ ±²®¹¯t·Ë®�·t¨«ª­ªéèꨭ®¹·ë±Èµ¢®�¯È®¹³²×¢ªÇ±©½Á³t³²µ¢¶|·t¨­Í»Ô¿±²µ»½ ±�½¯Ò½ Í»¸�¶Õ¾¿¨­ì¹®¹¸íÏ¢¯²¶�°®¹¸�×¢¯È®©ª­®Ó½Á¸¢³´±È¶îÔÁ¶ê¶�¸í°¶ê¸¢®¹³�·t¨­±²µÆµ¢¨«ÔÁµïÏ¢¯²¶Õ¬»½ ¬»¨­ª«¨Ç±ðÀÕå

ñ¡òºó�ô¢ô¢õxö ÛvÊø÷²ùêÝñãú ÍձȨDZȨ«½Áª­¨«ì°® �üûþý ÿ � ÷¹ß����»÷�� ý� åñãú ±²®°¯Ò½|±È®Ö×¢ÍᲨ«ª û�����

ßÁå� ü¨ÐÂÒÑ���� û ½ÁÍ»¸Æ½Á¸¢¸��~±È¶��ºå� å�� ®°ª«®Ã±²®��íÛ��ø÷ÈùÎÝ�Ûv¬»½ ª«ª�¶Á¼é¯Ò½Á¸�¨«×»³tù̽Á¯²¶Õעͻ¸��zÝ˼�¯²¶Õ¾ û å�Û���®°®�� ¨­ÔÕ×¢¯È®��¢å � å Ý

�Å{�� �"! }��$#&%('*) �,+ ä +.-/1032547698 � 0�2:4�;=<?> Ù Þ ß�á�âãÛvä Ýüá 63@BA5CD<?2FEHG�IF0�;J;LKNMHOQP ' <?2R>S;UT�;=03I�VW< ÊYX>�CD<�Z:I[G\P�<]4�M^I[< òºó�ô¢ô¢õxö ÛvÊø÷W_vä Ê5` Ý Z5I[G\43MRP�<NKa0�P]G\4b<ac ' >�Cd0�>e;=<�03K�> ��f � P�G\4b<?c(G3I[43KH@gÖy3hih:j ç�®Ã±tÊ ¬ ®�ªÐ½ ¯ÈÔÁ®©®°Í»¶Á×¢Ôյﳲ¶º±²µ»½ ±lkø¶Áª Ûvù ÷�ÊzÝnm ��o=pqo=rtsvuLwvs � åx ³È³²×¢¾¿®í±Èµ¢®Ú½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾ Ï»¨«ÂÒÑ�³Fy °¶�¸�®°·´¶Á¯Ò¸¢³¹å x ±î®°èÁ®¹¯²Àã³�±²®¹Ïizü±Èµ¢®ÆÔÁ¯È®°®Ó¸�Àã½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾ ¸¢®°ª«®Ã±²®Ó³î½|±¿¾¿¶Õ³�±kø¶Áª Ûvù ÷�ÊzÝ´®¹ª­®¹¾¿®°Íαȳ�¼�¯È¶Á¾ û å|{�µ¢®°¯È®Ã¼�¶Õ¯²®}z¢³�¨«Í»Âî û ³�±È½ ¯²±²®Ó¸É·t¨­±²µ � � ®°ª«®°¾¿®¹ÍÕ±Ò³?z»·Ë®Öµ»½ èÕ®

y Þ � �kø¶Áª Û ù»÷²ÊzÝ Þ � o -N~ pqo=rts ~ w�s � � f �5�

�����}�

Page 49: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

�R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R��R�R��R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R�

�R�R�R��R�R�R��R�R�R��R�R�R��R�R�R��R�R�R�

rtsvuxwzy|{~}������Y� ÀêÏ ®¹¯È°ע¬ ®�½ÁÍ»¸É±²µ¢®�ÔÕ¯²®¹®¹¸�ÀɽÁª­ÔÕ¶Á¯È¨Ç±Èµ¢¾

{�µ¢®Ö¼�¶Õª­ª«¶|·t¨­Í»Ô ±Èµ¢®°¶Õ¯²®¹¾ ¼�¶Áª«ª­¶|·�³ �

��� {�h»y|{�� }��Ð} A5CD<?I[<F< )}' KN>vK�0lEH0�� ' ;*T�G�E�P�G\4b<HK Ä c ' >�C Ù¿Û�Ä�Ý´Þ ßtáþâãÛvä�Û�Ä�Ý²Ý @x ÍÚ½ÁªÇ±È®°¯ÈÍ»½|±È®©·�½ À¿±²¶îÔծñ�½¿³�¨«¾¿¨­ªÐ½ ¯t¯È®¹³²×¢ª­±t¨«³�±È¶º¼�¶Áª«ª­¶|· ±²µ¢®Ö¼�¶Õª­ª«¶|·t¨­Í»ÔºÏ»¯²¶Õ¬»½ ¬¢¨«ª«¨«³�±²¨ÐÂ�Ï»¯²¶�ÂîӸ�×¢¯È®Áå

ßÕål ü¨ÐÂÒÑ̽º³²×¢¬»³²®Ã±��9�L� ÿ � ÷°ßb� � ¶Á¼¦³²¨«ì°® �b� ½|±t¯Ò½ Í»¸�¶Õ¾Æå� å�ç�®Ã±l���Q�9��¬x®Ö±²µ¢®�³²®Ã± ÿ �����9��� ���1���9�¢á ÿ �Y��³¹å ±Óå( ïÛ��ø÷t� Ý�m ùD�Îå¡ å�ç�®Ã±q� �9�»á��Éåe¢ ×�±²Ï»×�±£�ºå

¤ ®º½Á¯²ÔÕ×¢®ÉÛ�¨«Í�¼�¶Õ¯²¾î½ ª«ª«À�Ýt±²µ»½ ± ¼�¶Õ¯ ½ÁÍ ½ Ï»Ï¢¯²¶ÕÏ¢¯È¨«½ ±²®�³²®Ã±�±È¨­Í»Ôí¶Á¼üÏ»½ ¯Ò½ ¾¿®Ã±È®°¯Ò³?z5�9�¦³ð±È¨­ª«ª¦µ»½Á³�¥ºÛ �}� Ý�°¶ê¸¢®°·´¶Á¯Ò¸¢³½ Í ¸ ±²µ»½ ± ¨­±È³ ¸¢¨«³�±È½ÁÍ»Âį̂г ½ ± ª«®¹½Õ³ð± ù åd{é¶~¸�¶~³²¶Rz Í¢¶ ±È®î±²µ ½|± ±Èµ¢®Ì®?¦êÏx®¹Âñ²®Ó¸�Íê×¢¾ ¬x®°¯ ¶ ¼tÍ¢®°¨«ÔÁµê¬x¶Á×¢¯Ò³Ö¼�¯È¶Á¾�9�xá ��±Èµ»½|±�½ÌèÕ®¹Âñ²¶Á¯£� µ ½Á³ ¶ ¼´¸¢¨«³�±È½ÁÍ»Â|±Ö¾º¶Î³ð±�ùƨг©½ÁϢϢ¯È¶�¦�¨­¾î½|±È®°ª«À �}� ~ � kø¶Õª Û ù»÷²ÊzÝæåa�»¶Á¯�½ Ï»Ï¢¯²¶ÕÏ¢¯È¨«½ ±²®³²®Ã±�±È¨­Í»Ô̶ ¼üÏ»½Á¯È½Á¾¿®Ã±²®¹¯È³�Û ³ð±È¨­ª«ª ¾¿½Á¨­Íαҽ ¨«Í¢¨­Í»ÔÉÙ¨§ ß�áãâãÛ ä Ý�Ý�±Èµ¢¨Ð³�®H¦�Ïx®¹Âñ²®¹¸ ÍÎ×»¾ ¬x®°¯�¶Á¼üÍ¢®°¨«ÔÁµê¬x¶Á×¢¯Ò³�¹½ ÍÚ¬x®¾î½Á¸�®�½Á¯²¬¢¨­±²¯Ò½ ¯È¨«ª­À̳²¾î½ ª«ª�z¢³È½ Àª©¦å«{�µÎ× ³´±²µ¢®�Ï¢¯È¶Á¬ ½ ¬¢¨«ª­¨­±ðÀî±Èµ»½|±l� ¬ ®¹ª­¶ÕÍ¢ÔÕ³´±È¶ª� ¨«³�½ ±t¾º¶Î³ð±�©¦å|¬´À�­ ½Á¯²ÑÕ¶|è:® ³¨«Í¢®°¯Î×»½ÁªÇ±È¨­À}z ·´®�µ»½ èÕ®�±²µ»½ ±�±Èµ¢® ®¹èÁ®°Íα�±Èµ»½|±©µ»½ ª­¼ø¶ ¼ø±Èµ¢® ®¹ª­®¹¾º®¹Íαȳ�¶Á¼e�9�é½Á¯²® ¨­Íd��¶ê¹ÂÃ×¢¯Ò³�·t¨­±²µ~Ï¢¯²¶Õ¬»½ ¬»¨­ª«¨Ç±ðÀ½|±t¾¿¶Õ³�± � ©¦åY� ®°ª«®Ã±È¨­Í»Ô ±Èµ¢¨Ð³t³�®°±t³�±²¨«ª«ª�ª­®Ó½ èÁ®¹³Ë×»³�·t¨­±²µÆ½7� ¶ ¼¦³�¨«ì°® �b� ~i- ½ Í»¸Ì±²µ¢¨Ð³�µ»½ÁÏ¢Ï ®¹Í»³�·t¨­±²µïÏ¢¯²¶Õ¬»½ ¬»¨­ª«¨Ç±ðÀ½|±tª«®¹½Õ³ð±�ßtá � ©¦å

��������± ²�³ � �W´q³|µ �·¶��v� �²�t¸��i³¦� ���t���

kü½ ¯Ò³²µ»½ ¾¿¶|è5® ³Ëª«¨­Í¢®Ó½ ¯�°¶ê¸¢®¹³t½ ¯È®�ÂöÕÍ»³ð±È¯²× Âæ±²®Ó¸É× ³�¨«Í¢Ôº±²µ¢®Ö¼�¶Õª­ª«¶|·t¨«Í¢Ô¿Ï¢¯²¶Õ¬»½ ¬»¨­ª«¨«³�±²¨Ð©Ϣ¯È¶ê°®¹¸�×»¯²® �

¹�ºL» õ½¼L¾l¿[À(Á » ô º ó Û�Êø÷�Â¢Ý ü¨ÐÂÒÑ�±²µ¢®�®°Íα²¯È¨­®Ó³ø¶ ¼x±²µ»®�Â9Ã�ÊïÔÁ®°Í»®°¯Ò½|±²¶Õ¯ø¾î½|±²¯È¨=¦ªÄ�ע͢¨­¼�¶Á¯È¾ºª«À¿½ Í»¸º¨«Í»¸�®°Ïx®°Í ¸�®°ÍᲪ«À¿½|±ü¯Ò½ Í»¸�¶Õ¾¼�¯²¶Õ¾�Å �bÆ �/ åüç�®Ã±�� ÿ �·Ä � �1�,Å �/ �Õå

�Å{�� �"! }���ÇÉÈ <?> �7+ ä +Ê-/�03254q6q8 � @ È <H> Ù ßéáíâãÛvä Ý»á 63@ % G�IlKNMHOËP ' <?2R>S;UT�;=0�I�V}< Ê 032:4  _vÙ©Ê5`bX>�CD<�Z:I[G\P�<]4�M^I[< ¹�ºL» õ½¼L¾l¿[À(Á » ô º ó Û�Êø÷�Â¢Ý Z5I[G\43MRP�<NK�0�P�G°4}<,c ' >�C � � P�G°4}<Hc(G�I[4�KB032:4�4 ' KN>�0325P]<�03>£;=<�0�KN> ä ÊYXc ' >�C,C ' V�CªZ:I[G}Ì�0bÌ ' ; ' >�Tb@

�����}Í

Page 50: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

gÖy3hih:j ¤ ®î¯È®¹½Áª­ª«À~Í»®°®¹¸ ±È¶ÚÏ¢¯È¶|èÁ®º±ð·Ë¶ ³²®°Ï ½ ¯Ò½|±²®î½Õ³²³²®°¯²±²¨«¶ÁÍ»³Öµ»®°¯È® � � ¨«¯È³�±°zé±²µ»½ ±�±²µ»®Ì¾î½|±²¯È¨=¦1Ä µ»½Á³Ö¼�×»ª­ªÂöժ­×»¾ºÍþ¯Ò½ Í¢ÑΠ³�¶Æ±Èµ»½|±�±Èµ¢®ÉÂö�¸�®Ì¸¢¶Î®Ó³�µ»½ èÕ® �b� Âö�¸�®¹·Ë¶Õ¯È¸¢³¹å�Ï�®?¦ê±°z ·Ë®îÍ¢®¹®¹¸ ±È¶ ³�µ¢¶|· ±²µ ½|±�Í¢¶ÚÏ»½Á¨­¯ ¶ ¼¸�¨Ð³ð±È¨­Í Âæ±üÂö�¸�®¹·Ë¶Õ¯È¸¢³ ¨«Í ±Èµ¢®tÂö�¸�®´ÔÁ®¹Í¢®°¯Ò½|±È®¹¸�¬êÀÐÄ�½ ¯È®Ë·t¨­±²µ¢¨«Í¿¸�¨«³�±È½ÁÍ»Âîtä Ê̶Á¼ ®Ó½ÁÂÒµ ¶Á±²µ¢®¹¯¹å ¤ ®t·t¨«ª«ª¢ÂöÁ¾ ¬¢¨«Í¢®±²µ»®t±ð·Ë¶�³�±²®¹Ï»³ü¨«ÍᲶ�¶ÕÍ¢®�½ Í ¸î³�¨«¾¿Ï¢ª­Àº½ ¯ÈÔÁ×¢®�±Èµ»½|±Å¼�¶Á¯ü®¹èÁ®°¯ÈÀ Í»¶ÁÍ^� ì°®¹¯²¶ÖèÁ®ÓÂæ±È¶Á¯|�«zꨭ±Å¨«³ü±²µ¢® °½Á³²®�±²µ ½|±(�·Ä ¸�¶ê®¹³Í¢¶Á±�ª­¨«®�¨«ÍB�íÛ�Ñz÷²ä ÊzÝÃån{�µ¢®ÖØ ¯È³�±�Ï»½ ¯²± Û�¯Ò½ Í»Ñɶ ¼(ÄÆÝ�¨Ð³t¨«¾ºÏ»ª­¨«®¹¸Æ¬êÀ̱ȵ¢®�¼v½ÕÂæ±t±²µ ½|±q�·ÄÒ Ñï¼�¶Á¯ ½ ÍêÀÉÍ¢¶ÕÍ^� ì°®°¯È¶�üå«{�µ¢®©³�®ÓÂöÕÍ»¸îÏ»½Á¯�±ü¼�¶Õª­ª«¶|·�³°z㲨­Í Âî�·´®�·´¶Á×»ª«¸îµ ½ èÁ®�Ï¢¯È¶|èÁ®Ó¸ ±²µ»½ ±´Í¢¶ºÂö�¸�®¹·Ë¶Õ¯È¸ºµ»½Õ³ � ½ ¾¿¾¿¨­Í¢Ô ·Ë®¹¨­Ôյα˪«®¹³È³±²µ ½ Í~ä Êã½ÁÍ»¸Ú·´®�ÑêÍ¢¶|·à±²µ»½ ±�±Èµ¢®�±Èµ¢® ¾¿¨«Í¢¨«¾ ×¢¾ ¸�¨Ð³ð±Ò½ Í»Â°® ¶Á¼Å½îª­¨«Í¢®Ó½ ¯ÖÂö�¸�® ®\¯Î×»½ ªÐ³t±Èµ¢® ¾¿¨«Í¢¨­¾ ×¢¾ ·´®°¨«ÔÁµÎ±¶ ¼ø½ºÍ¢¶ÁÍD� ì¹®°¯È¶ºÂ°¶ê¸¢®°·´¶Á¯Ò¸�å�ê×¢Ï»Ï ¶Î³�® Ê ¨Ð³ ª«½Á¯²ÔÕ®�®°Í¢¶Õ×¢ÔÁµ ³²¶¿±²µ»½ ±�kø¶Õª Û ä Êø÷�ÊzÝ�m ��o$plo=r[s�uLwSÓ / s � å ç�®Ã±Öù ä Êøåq�¢¶Õ¯�®¹èÁ®°¯ÈÀÌØR¦ê®Ó¸B�ÉÒ Ñ ¨«ÍÅ �/ z�¨­±�¨Ð³t®¹½Õ³�À¿±È¶Ì³�®¹® ±Èµ»½|±l�·Ä ¨Ð³�½º¯È½ÁÍ»¸�¶Á¾ èÕ®¹Âñ²¶Á¯t¨«Í ÿ � ÷°ß�� � z ½ Í»¸É±²µ¢®¹¯²®°¼�¶Á¯È®bz

ü¯°Ô ·�±|Û��·ÄÆÝÕm ù�Ö ü¯\Ô �·Ä×�B�ÉÛSÑ�÷ÈùÎÝ�Ö kø¶Áª Ûvù ÷�ÊzÝ

� �m � o$plo=r[s�uLwSÓ / ~i- s �5�

{�µ¢®¹¯²®°¼�¶Á¯È®bz�¬êÀã±²µ»®~ע͢¨«¶ÁÍ¡¬x¶Á׻ͻ¸Øz�±²µ»®~Ï¢¯È¶Á¬»½Á¬¢¨«ª­¨­±ðÀã±Èµ»½|±Ì±Èµ¢®°¯È® ¨Ð³É½1� ·t¨­±²µ ·�±ÓÛ��·ÄÆÝ�m ùã¨Ð³É½ ±É¾¿¶Õ³�±� � � o=pqo=rts�u·w�Ó / ~Ø- s ��å ú ¼ÅÙ �� m ß�á�âãÛ ä Ýøá 6 z¢±²µ»®°Íڱȵ¢¨«³�Ï¢¯È¶Á¬»½Á¬¢¨­ª«¨­±ðÀí¨Ð³�½ ±�¾¿¶Õ³�± � ~ o�w�Ó / s �ï·tµ¢¨«ÂÒµÚÔնꮹ³�±È¶ì°®¹¯²¶î½Õ³tÊ�ÙÛÚ�åe{�µ»®°¯È®Ã¼�¶Á¯È®�·t¨­±²µÚµ¢¨«ÔÁµÆÏ¢¯È¶Á¬»½Á¬¢¨«ª­¨­±ðÀbz�±Èµ¢®�¯Ò½ Í»¸¢¶Á¾ Ï»¯²¶�ÂîӸ�×¢¯È®Ö¶Á×�±ÈÏ¢×�±È³ ½¿ª­¨«Í¢®Ó½ ¯�°¶ê¸¢®�·t¨Ç±Èµ¾¿¨­Í»¨­¾ ×¢¾ ¸�¨Ð³�±È½ Í Âî�½|±tª«®¹½Õ³ð±�ä Êøå

��������Ü Ý �«Þ��L¸ ���D³Yß²� ���(¸��Õ���Rà��x�¢���(¸

kü½ ¯È¾î½Á³²µ¢¶|è5® ³ø°¶ÁÍ»³�±²¯È×»Âñ²¨«¶ÁÍîÔÁ¨«èÁ®Ó³ü½ Í̽Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ¶Á¼�¯²×»Í¢Í¢¨«Í¢Ô�±²¨«¾¿® �}� � ¼�¶Á¯Å°¶ÁÍ»³�±²¯È×»Âñ²¨«Í¢Ô�±²µ»® Âö�¸�®Õå ¤ ¶Áì¹®°Í^�Âïҽ|¼Ü±Ö×»³²®¹³�½ïÂê«®°èÕ®°¯Ö¨«¸¢®¹½É±²¶Æ¯²®Ó¸�׻°® ±Èµ¢¨«³Ö¯Èע͢ͻ¨­Í¢Ôï±È¨­¾¿®º±²¶ � � å7{�µ¢®¿¨«¸¢®¹½í¨«³©±È¶íØ Í»¸ ½É¼v½ ¾¿¨«ª­À~¶ ¼´¸¢¨«³váð¶Á¨«Íα³²®Ã±È³ û - ÷ û / ÷ �?�?� ÷ û5â � ÿ � ÷°ßb�\��áäãÑÚ³²×»Âҵɱȵ»½|±t¼�¶Õ¯t®°èÕ®°¯ÈÀªå]z ûØæRç ÿ ãÑi�֨гt½¿ª«¨­Í¢®Ó½ ¯t³²×¢¬»³²Ï»½Á°®©¶Á¼ ÿ � ÷¹ß��\� å

èÐé !¢s�� }���ê�ë EqK�MRP�C�0nEH03� ' ;UT�< )}' KN>vK9032:4£ì Þ"kø¶Õª Û ù»÷²ÊzÝ�X >�CD<?2�>�CD<?I[< ' K£0�2 å KNMRP]C,>�CD03> û æ çîÿ ãÑ5� ' K90Ð; ' 25<]0�IP�G°4}<�c ' >�C�4 ' KN>�0�2:P�<703>n;=<�0�KN> ù @gÖy3hih:j í èÁ®¹¯²ÀîèÕ®¹Âæ±È¶Á¯������íÛ�Ñz÷²ùêݦá ÿ Ñi�©ª«¨­®Ó³t¨«Íƽ ±t¾º¶Î³ð±t¶ÕÍ¢®Ö¶ ¼ ±²µ¢® û æ ® ³ Ûv³²¨­Í»Â°®©±²µ¢® û æ ® ³t½ ¯È®Ö¸¢¨«³váð¶Á¨«ÍαÒÝæå�ꨫͻÂî ì98 kø¶Õª Û ù»÷²ÊzÝüá¡ß}z�¨Ç±©¼�¶Áª«ª«¶|·�³�±Èµ»½|±�½|±Öª­®Ó½Á³�±©¶ÕÍ¢® ¶Á¼ü±²µ»® û æ ¸�¶ê®Ó³ Í»¶ ±�ÂöÁÍαҽ ¨«Í~½ ÍêÀƶ ¼ü±Èµ¢®º®°ª«®°¾¿®°Íαȳ¶ ¼��ÉÛSÑ�÷ÈùÎÝ´á ÿ Ñi�Õå,�ê× ÂÒµã½ Í û æ µ»½Õ³�¾¿¨­Í¢¨«¾ ×»¾ ·´®°¨«ÔÁµÎ± ½|±�ª«®¹½Õ³ð±�ùîz ½ÁÍ»¸�³²¨­Í»Â°® û æ ç�ÿ ãÑ5�̨г�ª«¨­Í¢®Ó½ ¯\zz¨­± µ»½Õ³¸�¨Ð³ð±Ò½ Í»Â°®�½|±�ª«®¹½Á³�±�ù»å

�¢×»¯�±Èµ¢®°¯È¾¿¶Á¯È®bzÁ¨­¼�·´®�°½ÁÍÌÂöÁÍ ³ð±È¯²×»Âñü±²µ»¨«³ÅÏ»½ ¯²±²¨­±²¨«¶ÁÍî·t¨­±²µî±Èµ¢® ½Õ¸¢¸�¨­±²¨«¶ÁÍ»½Áª¢Ï¢¯È¶ÁÏx®°¯²±ðÀ ±Èµ»½|±´½ ª«ª½� û æ �*® ³Å½ ¯È®�®\¯Õ× ½ ªSz·´®©·t¨«ª«ª�ÔÁ®°±t½¿ª«¨«Í¢®¹½Á¯�°¶�¸�®�¶ ¼¦³�¨«ì°® � �^ï ì å(�ê×»ÂҵƽîÂöÕÍ»³ð±È¯²× Âæ±²¨«¶ÁÍí·t¨­ª«ª�¬x®�Ï¢¯È®¹³²®°Íα²®Ó¸É¨«Íï±²µ¢®�Í¢®?¦ê±�ª­®ÓÂæ±²×»¯²®Õå

ðFñNð òôó�ó�õ�öB÷ùø�ú�ûýüÉþ,ÿ�ø������?õqö���õ�� � õlõl÷������������7ö�����÷�õ

� ®¹¯²®ï·´®ï³²µ¢¶|· ±Èµ»½|±º±²µ¢®ï±ð·´¶ ¸¢®Ãػ͢¨­±²¨«¶ÁÍ ³ ¶Á¼��t®¹®¹¸����ê¶Õª­¶Õ¾º¶ÕÍ Âö�¸�®Ó³¿ÂöÁ¨«Í»Â°¨«¸�®í¼�¶Á¯î½ÁϢϢ¯È¶ÁÏ¢¯È¨«½ ±²®ïÂÒµ¢¶Á¨ÐÂÃ®í¶ ¼Ï»½Á¯È½Á¾º®°±²®¹¯È³¹å½{鶿¬ ®�®?¦�Ï¢ª­¨ÐÂè­±�ª«®Ã±�×»³t¯È®°¨«Íα²¯È¶�¸�×»Âî ±²µ»®Ö±ð·Ë¶î¸�®°Ø»Í¢¨­±²¨«¶ÁÍ»³�Ûv·t¨Ç±ÈµÆ¾º¶Õ¯²®ÖÏ»½Á¯È½Á¾¿®Ã±²®¹¯È³ÒÝæå

����� �

Page 51: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

�ï{���� s��¹s�h���}��! &% G�IùZ5I ' �F<ÎZDG�c(<HI#" X ' 2R>�<SVW<?I�K  m Ê m " 0�2:4ý0%$3<]P?>�G3I'& )( & - ÷ �°�?� ÷ & �+* �Å � , G�E 4 ' KN> ' 25PH>Q<H;=<?�ª<H2î>vK G�E Å , X >JCR<.-�<�<]40/215G�;=G3�ªG32ôP�G\4b< �q� ,43 � 3 � 3 5 ' K&>�CD<¨P�G�;J;=<�PH> ' G32 G�E6$3<�PH>�G3I�Kÿ7(98 Û & - ÝÃ÷ �?�°� ÷ 8 Û & � Ý * � 8 ��Å , Ô :RÖ ÷ȸ�®°Ô�Û 8 Ý + Â:� @{�µ¢®�³²®¹Â°¶ÁÍ»¸ï¸�®ÃØ Í¢¨Ç±È¨­¶ÕÍƬ ®¹ª­¶|·ë¨«³�èê¨Ð½ ±Èµ¢®�Âöê®<;î°¨­®¹Íαȳt¶Á¼éÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª«³¹å�ï{���� s��¹s�h���}��!=&% G�I90lZ5I ' �F<eZRG3c(<?I>" X 0qZ5I ' � ' > ' $�<a<H;=<?�ª<H2î>?& ��Å , 032:4 ' 2î>�<�VW<HI Â:X >�CD<�0�;U>�<HIN2503>�<@-q<�<�4A/15G�;=G3�ªG32 P�G\4b< �q� � ,B3 � 3 5 ' K,>�CD<�P�G3;J;$<]P?> ' G32 G�E�$�<�P?>�G�I�K ÿ7(DC4E ÷ �?�°� ÷ C , ~ / * � F�ÛG:xÝ 4 ' $ ' 4b<HK �¿Û�:xÝ IH , ~ /æKJ E C æ : æ �bXc·CD<?I[< F�ÛG:xÝ %L

, ~Ø-N~ �M J - Û�:Éá & M Ý @{�µ¢®Ö¼�¶Õª­ª«¶|·t¨­Í»Ô Ï¢¯È¶ÁÏx¶Õ³²¨­±²¨«¶ÁÍïÔÁ¨«èÁ®¹³Ë±Èµ¢®�®°¯Î×¢¨«è|½ ª«®°Í»Â°® �

gÖy3h+Neh�OÓs��ÓsvhP� }��v� Ñ % G3I7<�$3<HINT�Z:I ' �ª<�ZRG3c(<?IQ" X Z5I ' � ' > ' $3<ª<H;=<?�ª<H2î>R&ý03254 Â�m " á ß 03254qEHG�I Ê " á ß03254�& S( & E ÷ �?�°� ÷ & � ~i- * XR�q� ,B3 � 3 � 3 5 ��� � ,B3 � 3 5 @gÖy3hih:j �ꨫͻÂî ¬x¶ ±²µ Âö�¸�®Ó³Ìµ»½ èÕ® ±²µ»® ³È½ ¾¿®~Íê×¢¾ ¬ ®¹¯í¶Á¼ Âö�¸�®°·´¶Á¯Ò¸¢³°zt¨Ç±Ú³²×T;ÌÂɱ²¶ Ï¢¯È¶|èÁ®Ú±Èµ»½|±ï®°èÁ®¹¯²ÀÂö�¸�®¹·Ë¶Õ¯È¸í½Á¹ÂöÁ¯Ò¸�¨«Í¢Ô ±²¶¿±²µ»®ÖØ»¯È³�±�¸�®ÃØ Í¢¨Ç±È¨­¶ÕÍƨ«³t½î°¶ê¸¢®°·´¶Á¯Ò¸É½Á¹Âöկȸ�¨«Í¢Ô ±²¶º±²µ»®�³�®ÓÂöÁÍ ¸í¸�®°Ø»Í¢¨­±²¨«¶ÁÍ�åU˶ÁÍ ³�¨Ð¸�®°¯�½ïèÁ®ÓÂæ±È¶Á¯ (GC4E ÷ �°�?� ÷ C � ~Ø- * ½ Í»¸~±²µ»®Ì½Á³È³�¶�Âèн|±È®¹¸~Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ª(�¿ÛG:xÝ H � ~Ø-æKJ E C æ : æ åª{é¶ïÏ»¯²¶|èÕ® ±Èµ¢¨«³èÁ®ÓÂæ±È¶Á¯Å¨Ð³´½ Âö�¸�®¹·Ë¶Õ¯È¸î½Õ°°¶Á¯Ò¸�¨­Í»ÔÖ±²¶�±Èµ¢®Ö³�®ÓÂöÁÍ ¸Ì¸�®ÃØ Í¢¨Ç±È¨­¶ÕÍizê¨Ç±t³²×T;ÌÂű²¶ Ï¢¯È¶|èÁ®�±²µ ½|±l�¿Û & M Ý � ¼�¶Á¯Ë®°èÁ®¹¯²ÀV �ÎÔ Êïá1ÂWÖÅÛ ³�¨«Í»Âîֱȵ¢¨Ð³t¨­¾¿Ï¢ª«¨«®¹³�±Èµ»½|±�L M Û�:Ìá & M Ý�¸�¨«èΨи�®Ó³l�¿Û�:xݲÝæåU˶ÁÍ ³�¨Ð¸�®°¯Ö½Ì¾¿®Ó³²³È½ ÔÕ® � W(�X E ÷ �?�°� ÷ X � ~Ø- * ½ÁÍ»¸Ú±Èµ¢®¿½Á³È³�¶�Âèн|±È®¹¸ÆÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª 8 Û�:xÝ H � ~Ø-Y J E X Y : Y å�ç�®°±Z W(98 Û & E ÝÃ÷ �°�?� ÷ 8 Û & � ~Ø- Ý * ¬x® ±Èµ¢®¿®°Í»Â°¶�¸�¨­Í»Ôí¶Á¼ � ½Õ°°¶Á¯Ò¸�¨­Í»Ô̱²¶í±²µ»® Ø ¯È³�±�¸�®Ãػͻ¨Ç±È¨­¶ÕÍ�åºçz®Ã±a�\[ÉÛG:xÝ©¬x®±²µ»®ÌÏ ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áªø·t¨Ç±Èµ Z ½Á³�¨­±È³�°¶ê®�;ÌÂè«®°Íαȳ°zz¨ å ®Áå$zz±Èµ¢®ÉÂöê®<;î°¨­®¹Íα�¶ ¼>: æ ¨Ð³ 8 Û & æ Ýæå ¤ ®É³²µ¢¶|· ¬x®°ª«¶|· ±²µ»½ ±�\[ÉÛ & M Ý � ¼�¶Á¯t®¹èÁ®°¯ÈÀ V �1Ô Êíá1ÂWÖ å

�][ÉÛ & M Ý � ~Ø-^æ!J E 8 Û & æ ÝÃÛ & M Ý æ

� ~Ø-^æ!J E� ~Ø-^Y J E

X Y Û & æ Ý Y Û & M Ý æ

� ~Ø-^Y J E

X Y� ~i-^æKJ E Û &

Y & M Ý æ

� ~Ø-^Y J E

X Y, ~ /^æ!J E ©

æM 3 Y·tµ¢®¹¯²®�© M 3 Y & M u Y å|Ï�¶Á±²¨ÐÂ²µ ½|±´¼�¶Á¯�®°èÕ®°¯ÈÀ V ÷`_é³¹å ±Óå V@a _nÒ " á ßbzW© M 3 Y Ò ßÁå|Ï�¶ ±²¨ÐÂ�×¢¯²±²µ»®°¯´±²µ»½ ±�¼�¶Á¯´®°èÁ®¹¯²À³²×»ÂÒµd© M 3 Y ±²µ»®¿³²×¢¾¿¾î½|±È¨­¶ÕÍ H , ~ /æKJ E © æM 3 Y � - å��ꨫͻÂîb_q� ÿ � ÷ �?�°� ÷]ÂÌá�ß��Wz�·Ë®ºØ»Í ¸ ±Èµ»½|±�© M 3 Y Ò ß ¼�¶Õ¯Ö®°èÁ®¹¯²ÀV �ÎÔ Êïá1ÂWÖ å«{�µê×»³´¼�¶Á¯t®¹èÁ®°¯ÈÀ V �1Ô Êíá1ÂWÖ�z¢·´® Ø Í»¸í±²µ»½ ±��][íÛ & M Ý � å«{�µ¢¨Ð³tÂöÁÍ Âê«×»¸�®¹³t±²µ¢®�Ï¢¯È¶ê¶ ¼ðå

cedgfihkj>hklnmeo<pDh prqbhkj>s4tip9uBhkonmelvuBj\w!s4xkxkszygj|{~}gme�zuBxkx?p9fAu`p@�Ame�D�@u`p|� j]xkh pDpDxkm~pDfnmes4�9me��uBj9jDmz�Gp9j>pDfAu`p��0�B��c������.��w!s4�\me��me�Gqons4oi���zme�Ds>��hkoQ� �7� �0uB��p9s4�Dhkon�>pDfnm�xkmew�pgfAuBonl�jDhklnm4�ny�m��Aoil~pDfAu`p�meh pDfnme�g�@�b�����>s4��� �B��� !¡�¢ �   ��� �¤£ hkon�em¥�§¦�¨�4�ipDfnm�x©u`pDpDme��\ªijDp?t0m�p9fim¥�|uBjDm �

������ß

Page 52: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

« ¬®­°¯²±�³S´ µ

Ç��� �=5ê·¶ é u:h y sG� � �ãs Zv¸ �¤�°y3h?¹ w Z �¹s�h��º�\h è hg¹ésD�éu ��� {�h»y � �ꮹÏ�±²®¹¾ ¬x®°¯ �¼» z ���}� ß½b¾R¿�À�Á�Â+¾�Ã

È <�P?>�M^I]<HI<Ä�Åù0}4°C^MÆ1îMR4}032 15P?I ' Ì�<ÇÄ>È ' P�G�;=< ë �7�FG�IN; ' P�0

{é¶ê¸»½ À̷ˮַt¨«ª­ª�±È½ ª«ÑɽÁ¬ ¶Õ×�± �

ñ ¤ ¶Õì°®°Í Âïҽ|¼Ü±�ÂöÕÍ»³ð±È¯²× Âæ±²¨«¶ÁÍïÂöÕÍձȨ­Íê×¢®Ó¸ñ ¬Ë×»¨­ªÐ¸�¨«Í¢ÔîÂö�¸�®¹³´¼�¯È¶Á¾ ¶ ±Èµ¢®°¯�°¶ê¸¢®¹³

É ø½ ¯È¨­±ðÀÌÂÒµ¢®¹ÂÒÑ̬»¨Ç±É ü׻ͻÂæ±È×¢¯²¨«Í¢ÔÉ �t®Ó³ð±È¯²¨ÐÂæ±È¨­¶ÕÍÉ � ¨­¯È®¹Âñq ü¯È¶ê¸¢×»Âæ±É U˶ÁÍ Â°½|±È®°Í»½ ±²¨«¶ÁÍ

ñ �¢¶Á¯ÈÍ¢®¹ÀÌÂö�¸�®¹³ñËÊ ×»³�±²®Ó³�®¹Íï°¶�¸�®¹³

̪ñÇÍ Î �ÐÏ�õqö���Ñ¥��AÒÓ���Ðö�ÔgÒRÑ«ÿ��\Ò|ø��7ö Õ����Ðö§ÒYø?ö,ÿBõl÷×Ö

{�µ¢® ¤ ¶Õì°®¹Í»Âïҽ|¼Ü±tÂöÕÍ»³ð±È¯²× Âæ±²¨«¶ÁÍíÔÁ¨«èÁ®Ó³Ë½ �0Ø«o � s ±È¨­¾¿®�½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾ ¼�¶Õ¯´Â°¶ÁÍ»³�±²¯È×»Âñ²¨«Í¢Ô�Ô Êø÷]Â�÷²ùbÖ / Âö�¸�®Ó³°å ¤ ® Ï»¨«ÂÒÑ×¢Ï ·tµ¢®°¯È®Å·´®Åª«®Ã¼Ü±¦¶0ÙÍ�±²µ»®ËªÐ½Á³�±éª«®¹Âñ²×¢¯È®ÁåR�t®¹Â¹½ ª«ªÕ¶Õ×¢¯éÔÕ¶Õ½ÁªÁ¨Ð³z±È¶ °¶ÁÍ»³�±²¯È×»Â汦½t¼v½Á¾º¨«ª«À�¶ ¼»³²®Ã±È³ û - ÷ û / ÷ �°�?� ÷ ûØâ �ÿ � ÷°ßb� � á1ÑƳ²×»Âҵɱȵ»½|±

ßÕål{�µ¢®�³�®°±È³�½Á¯²®©Ï»½ ¨«¯È·t¨«³²®�¸�¨«³váð¶Á¨«Íα¹å� å\Ú:å�z ûØæRç~ÿ Ñi�©¨Ð³�½ºª«¨­Í¢®Ó½ ¯�³²×¢¬»³²Ï»½Á°®Ö¶ ¼ ÿ � ÷¹ß�� � å¡ å ì Þ kø¶Áª Ûvù ÷�ÊzÝæå

» ��� �

Page 53: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� å\Ú:åÒ÷ V � � û æ � �b� á ßÕå

¤ ®ï³È½ · ª«½Õ³ð±ºª­®ÓÂæ±È×¢¯²®É±²µ»½ ±º¨­¼�·´®í¹½ Í °¶ÁÍ»³�±²¯È×»Â汿³�× ÂÒµ ½Ú¼v½Á¾¿¨­ª«À�¶ ¼�³²®Ã±Ò³?zø¶ÕÍ¢®í¶Á¼t±²µ¢®Ó³�®Æ³²®Ã±È³ ·t¨«ª­ª�Àꨭ®¹ª«¸ ½Ô Êø÷]Â�÷Èù�Ö / °¶ê¸¢®Áå�{é¶�¸¢½ Àï·Ë®�·t¨«ª«ª ³²®°® ¤ ¶Õì°®°Í Âïҽ|¼Ü±°® ³�°¶ÁÍ»³�±²¯È×»Âñ²¨«¶ÁÍÚ¶ ¼Å³²×»ÂÒµ~½î¼v½ ¾¿¨­ª«Àƶ ¼Å³²®Ã±Ò³°å ¤ ® ·t¨­ª«ª ³²µ¢¶|·±²µ»®©Â°¶ÁÍ»³�±²¯È×»Âæ±È¨­¶ÕÍɶÕÍ¢ª­À¿Ê � Â�å ú ±´¨Ð³Ë¼v½ ¨«¯²ª«Àî³�¨«¾¿Ï¢ª«® ±È¶ ÔÕ®°Í¢®¹¯È½Áª­¨«ì°®�¨Ç±�±²¶¿½ °¶ÁÍ»³�±²¯È×»Âñ²¨«¶ÁÍî¼�¶Õ¯´Ê ÛC ¿¼�¶Á¯t½ÁÍÎÀ¨«ÍձȮ°ÔÕ®°¯ C å¤ ®t·t¨­ª«ª¢×»³²®�±²µ¢®�°¶Á¯È¯²®Ó³�Ïx¶ÁÍ ¸�®°Í»Â°®Ë¬x®Ã±ð·´®°®¹Í Ø ®°ªÐ¸¢³ü½ Í ¸ èÕ®¹Âñ²¶Á¯ø³²Ï»½Á°®¹³ ±Èµ»½|±üÏ¢¯È®¹³²®°¯ÈèÁ®Ó³é½Õ¸¢¸�¨­±²¨«¶ÁÍÚÛv³²®°®tçz®¹Âæ±È×¢¯È®Ï�¶Á±²®Ó³t¶ÁÍ x ª«ÔÁ®¹¬¢¯È½RzR�ꮹÂñ²¨«¶ÁÍ » ÝÃå ú ÍÚÏ»½ ¯²±²¨ÐÂÃ×»ª«½Á¯´·´®�·t¨«ª­ª�èꨫ®°· Å �/ ½Á³nÅ /BÜ ½ÁÍ»¸�Å �/ ½Á³nÅ // Ü å({�µ¢®�³²®Ã±Ò³�·Ë®�·t¨«ª­ªÂöÕÍ»³�±²¯È×»Âæ±�·t¨«ª«ª ¬x® ¨«Í»¸�®?¦�®¹¸Ú¬êÀ & �ùÅ /BÜ zx·t¨Ç±Èµ û 5 ¸�®ÃØ Í¢®¹¸ ½Õ³�¼�¶Õª­ª«¶|·�³ ��û 5 ÿ Û�:é÷ & :xÝ7��:��×Ý /BÜ á ÿ � �b�Îå¤ ®�Í¢¶|· èÕ®°¯È¨Ç¼�Àî±Èµ»½|±t±Èµ¢® û 5 ® ³t³È½|±È¨«³�¼�À̱ȵ¢®�½ ¬x¶|èÁ®ÖÂöÕÍ»¸�¨­±²¨«¶ÁÍ»³´¼�¶Õ¯ ì �b� ½ Í»¸ïù̳²×»ÂÒµí±²µ»½ ±lkø¶Áª Ûvù ÷�ÊzÝÕm ì åßÕå û 5 ® ³Ö½ ¯È® Ï»½Á¨­¯È·t¨Ð³�®º¸�¨«³váð¶Á¨«Íα � ú Í~Ï»½Á¯�±È¨«Â°×¢ªÐ½ ¯\zi�¢¶Á¯©®°èÕ®°¯ÈÀãÛ�:é÷zÞ¢Ý��ßÝ //`Ü z�±²µ¢®¹¯²®º¨«³�½ ±©¾¿¶Î³ð±Ö¶ÁÍ¢® & ³²×»ÂÒµ±²µ»½ ± Û�:é÷zÞ¢Ýl� û 5 z Í»½ ¾¿®°ª«À & :�Þ ~i- Ï¢¯È¶|èꨫ¸¢®¹¸àÞɨг�Í¢¶ÕÍ^� ì°®°¯È¶Ì½ Í ¸ & � ¨­¼¥Þ � å�Û ú ¼¥: � ±²µ¢®¹ÍÛ�:z÷|Þ¢Ý�Ò� û 5 ¼�¶Á¯�½ ÍêÀ & å Ý

� å û 5 ç~ÿ � �֨г�ª­¨«Í¢®¹½Á¯ � U˪«®¹½Á¯²ª«ÀÌ®¹½ÕÂÒµ û 5 ¨Ð³�½ºª«¨­Í¢®Ó½ ¯�³²×¢¬»³²Ï»½Á°® ¶Á¼�Ý // Ü ½ÁÍ»¸ï¨«³�ÔÕ®°Í¢®¹¯È½ ±²®¹¸É¬êÀ̱²µ»®�¾¿½ ±²¯È¨*¦ÔÇß & Ö å«�ê¨­Í Â²µ¢®�°¶Á¯È¯²®Ó³�Ïx¶ÁÍ»¸¢®°Í»Â°®�¬ ®°±ð·Ë®¹®°Í,Å �/ ½ÁÍ»¸�Å / Ü ¯È®¹³²Ïx®¹Âæ±Ò³�½Á¸¢¸�¨­±²¨«¶ÁÍLz�¨Ç±�¼�¶Áª«ª«¶|·�³ü±Èµ»½|± û 5 çïÿ � �½ ¯È® ª«¨­Í»®¹½ ¯t¶|èÕ®°¯nÅ / ½Á³�·´®°ª«ª å¡ ål{�µ¢®°¯È® ½Á¯²®©Âê«®¹½ ¯Èª«À ì � � ¶Á¼�±²µ»® û 5 ® ³¹å«{�µ¢®ÖÂöÕÍ»¸�¨­±²¨«¶ÁÍ ì Þ"kø¶Õª Û ù»÷²ÊzÝż�¶Áª«ª­¶|·�³Å¼�¯²¶Õ¾ ±²µ¢®�¸�®°Ø»Í¢¨­±²¨«¶ÁÍí¶ ¼ù»å

� å ú ±�¨Ð³�½Áª«³²¶ ¶Õ¬êèΨ«¶Á× ³´±²µ»½ ±Ð� û 5 � �b� á ßÕå

{ ½ Ñê¨­Í»Ô ±Èµ¢®Ö¯È½ ±²¨«¶Õ³� ï Ê ½ Í»¸ïù ï Ê~·´® Í»¶ ±²®©±Èµ»½|±�±²µ»®Ö°¶�¸�®¹³ û 5 ½Áª­·�½ À�³Åµ»½ èÕ®©½ ¯Ò½|±²®Ö¶Á¼ -/ åY�»×¢¯²±²µ¢®¹¯t¨Ç¼ ·Ë®©ØD¦½ ÍêÀ 6q8 � z ½ Í»¸Æ³²®Ã±�ù Û â ~Ø- Û -/ Ýøá 6 Ý Ê ±²µ¢®¹Íï¼�¶Á¯�½Áª­ªz³²×T;ÌÂè«®°ÍαȪ­À磌½Á¯²ÔÕ®ÖÊ ·´®�µ»½ èÁ®9kø¶Õª Û ù»÷²ÊzÝ�m � � Ó / ½ÁÍ»¸±²µê×»³t±²µ¢®Ö¼v½Á¾º¨«ª«Àɽ ¬x¶|èÁ®ÖÔÁ¨«èÁ®Ó³�½ºÂ°¶�¸�®�¶ ¼ ¯È½ ±²® -/ ½ Í ¸É¯È®°ªÐ½|±È¨­èÕ®Ö¸¢¨«³�±È½ÁÍ»Âî�½ Ï»Ï¢¯²¶Î½ÁÂÒµ¢¨«Í¢Ôºâ ~Ø- Û -/ Ýæ嬴À~½Æ³�ª«¨«ÔÁµÎ±²ª«À ¾¿¶Á¯È®î°½ ¯È®Ã¼�×»ªü½ ¯ÈÔÁ×¢¾¿®°Íαַˮî¹½ Íþ½ÁÂæ±È×»½ ª«ª«À èÁ®¹¯²¨­¼�ÀƱ²µ»½ ±�¾¿¶Õ³�±�°¶�¸�®¹³Ö¨«Í ±²µ¢®¿¼v½Á¾º¨«ª«À~½ÁÂÒµ¢¨«®°èÕ®±²µ»® §©¨­ª«¬ ®¹¯�±[�Skü½Á¯È³²µ»½Á¾º¶|èî¬x¶Á׻ͻ¸�å(�êÏx®¹Â°¨ÇØ Â¹½ ª«ª­À}z¢·´®Ö¹½ ÍïÏ¢¯È¶|èÁ® �

��� {�h»y|{�� Çz�v� % G�IB<<$3<HINT�6ù8 � 03254ªEHG3Iù03;J;ÕKNMHOQP ' <?2R>S;UT�;=03ISV}<�<�$3<H2 2RM^�ªÌ]<?I�K ÊYX�á GÇâ\<?2:P?I[0�E�>nã K�P�G�2+/KN>�INMRP?> ' G32�c ' >�C ZD0�I[03�ª<?>�<?I Ê V ' $�<HK 01EH03� ' ;UT¨GtE � � Ó / P�G°4}<NKQc ' >�C�03;J;�Ì?M^>�6�E�I[0bP?> ' G�2.G�EËc·C ' P]C.03I[<Ô Êø÷ -/ Êø÷¹Ûvâ ~Ø- Û -/ Ýøá 6 Ý Ê5Ö / /tP�G\4b<HK?@äÉ{�� !¢yiå?O�æßÕål�¢×¢¯²±²µ¢®¹¯²¾¿¶Õ¯²®}zÁ¼�¶Õ¯�½Áª­ª�³²×»ÂÒµíÊ|zÎÔÕ¨­èÕ®°Íï½ Íɨ«Í»¸�®?¦,åø¶ ¼¦½ °¶�¸�®�¼�¯È¶Á¾ ±Èµ¢®©¼v½ ¾¿¨«ª­ÀÌ·t¨­±²µïÏ»½Á¯È½Á¾º®°±²®¹¯ËÊ|z¢½ÁÍÎÀ³�Ïx®¹Â°¨ÇØ ÂÖ®¹Íα²¯ÈÀɶ ¼ ±²µ»®�ÔÁ®¹Í¢®°¯Ò½|±È¶Á¯t¾î½|±È¯²¨=¦í¶Á¼é±Èµ¢®�å ±²µÚÂö�¸�® °½ ÍƬx® Âöվ¿Ï¢×�±²®Ó¸ï¨­ÍƱȨ­¾¿®�Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª�¨«ÍÊøå

� å ú ¼zÊ ¨Ð³Å¶Á¼�±²µ¢® ¼�¶Á¯È¾��Qç ¡ â zê±²µ»®°Í̱ȵ¢®ÖÂöÁ¾¿Ï¢×¢±È½|±È¨­¶ÕÍí¹½ Í̬x®�°½ ¯È¯È¨­®Ó¸¿¶Á×�±�¨­Í�è¿Û�ª«¶ÁÔËÊzÝų²Ï»½Á°®Áå|{�µ¢¨Ð³´Ï»½ ¯²±¼�¶Áª«ª­¶|·�³Ö¼�¯È¶Á¾ ±²µ¢®É¼v½ÁÂñ�±²µ»½ ±�±²µ»®É¨«¯²¯È®¹¸�× Â諬¢ª­®îÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÅ¼�¶Á¯ ³²×»ÂÒµÎÅ / Ü ·tµ¢®°¯È®�Â Ê ï � ¨Ð³�ÑêÍ¢¶|·tÍ®H¦�Ï¢ª«¨«Â°¨Ç±Èª­Àº½ Í»¸º±Èµ¢¨«³üÏ ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ª»¨«³Ë³�Ï»½Á¯È³²®Áå´Ûv{�µ»½ÁÍ¢Ñ�³¦±²¶�� ¨«®Ã±²®¹¯Åè|½ Íª­Ú®¹ª­ÑÕ®°¬x®°®¹ÑïÛ ¸�¨­®°±²®¹¯4é ¨Ð½Á³¹å ®Ó¸�× Ýé¼�¶Õ¯Ï ¶Õ¨­ÍᲨ«Í¢Ô¿¶Á×¢±t±²µ¢¨Ð³t×»³²®Ö¶ ¼ø³�Ï»½Á¯È³²¨­±ðÀÁå Ý

ê�ëAì0írîiï ðzì7ñ í ¦ê±²®¹Í»¸ ±²µ¢®ï½ ¯ÈÔÁ×¢¾¿®¹ÍÕ±º½ ¬x¶|èÁ®¿±²¶ ÂöÁÍ ³ð±È¯²×»Âñ ¼�¶Õ¯ ®°èÕ®°¯ÈÀ~¨«Íα²®°ÔÕ®°¯ C z¦®°èÁ®¹¯²À 6�8 � zø½ Í»¸ã½Áª­ª´³�×�;7�Âè«®°ÍαȪ­À�ªÐ½ ¯ÈÔÁ®BÂ5zŽ Í ®°Í»³²®°¾ ¬¢ª«®í¶Á¼ � o!ò ~i- s�� Âö�¸�®Ó³ ³²×»ÂÒµ ±²µ»½ ±î½Áª­ª�¬¢×¢±¿½ÁÍ 6 � ¼�¯Ò½ÁÂñ²¨«¶ÁÍã¶Á¼�±Èµ¢®í®¹Í»³²®°¾ ¬»ª­®Æ½ ¯È®Ô C Â�÷]Â�÷¹Ûvâ ~Ø- Û�ßtá - ò ݦá 6 ÝÃÛ C ¢Ý�Ö / � Âö�¸�®Ó³°åRóü¶Á×»¯�ÂöÕÍ»³ð±È¯²× Âæ±²¨«¶ÁÍï³�µ»¶Á×¢ªÐ¸í±È½ ÑÕ®©±²¨«¾º® �¼Ø|o!ò��Hs å

» ��� ¡

Page 54: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

äÉ{�j {Îy|{7� Z {ôO�æ {�µ¢® ¤ ¶Áì°®¹Í»Âïҽ|¼Ü±�®¹Í»³²®°¾ ¬»ª­®�¶Á¼¦Â°¶ê¸¢®¹³�¸�¶ÉÍ¢¶ ±�½ÁÏ¢Ï ®Ó½ ¯�¨«ÍÚ½ ÍêÀÉÏ ½ Ïx®°¯�¬êÀ ¤ ¶Áì¹®°Í»Â°¯È½ ¼Ü±¹ån{�µ¢®°À½ ¯È®Ö½ ª«ª­×»¸¢®¹¸É±²¶¿¨­ÍÚ½ ¾¿¶ÁÍ¢¶ÕÔÁ¯Ò½ Ï¢µí¬ÎÀ�­ ½Á³È³�®¹ÀùÔ õ��^zR�ê®ÓÂæ±²¨«¶ÁÍ � å ��Ö å|{�µ¢®�½ÁÂñ²×»½Áª�¼v½ ¾¿¨­ª«Àɽճt¸�®¹³ÈÂïȨ­¬x®¹¸í½ ¬x¶|èÁ®©¨«³¼�¯È¶Á¾ Ê ×»³�±²®¹³²®°ÍL® ³ Ï»½ÁÏ ®¹¯lÔ � » Ö åY{�µ¢®�®H¦ê±È®°Í»³²¨­¶Õͺ½Õ³�ÑÕ®¹¸Ö¼�¶Õ¯ø¨­Í ±²µ»®t®H¦�®°¯ÒÂèг�®Ë¨«³ ¼�¯È¶Á¾ ±²µ¢®�Ï»½ÁÏ ®¹¯ø¶ ¼ ¤ ®°ªÐ¸�¶ÕÍ�Ô­ß �b¡ Ö å

̪ñ4ö ÷ ÿ�øÇ�H÷ùø°ö�øù����÷�õ@ÔÓ0Ñ¥��� ��Ò¥úBõ@Ñû����÷�õQÔ

ú Í ±Èµ¢® Ï»¯²®¹èΨ«¶Á× ³ ³²®¹Âñ²¨«¶ÁÍÚ·´® ³È½ ·à±²µ»½ ±©½Á³²À꾿Ï�±²¶Á±²¨Ð°½ ª«ª«ÀïÔÕ¶ê¶ê¸Ú°¶�¸�®¹³ ®H¦�¨Ð³ð±Óå � ¶|·Ë®¹èÁ®°¯\zx·Ë® µ»½Á¸ÚÍ»¶É®H¦�Ï¢ª«¨ÐÂè­±ÂöÕÍ»³�±²¯È×»Âæ±È¨­¶ÕÍ~¼�¶Õ¯Ö±²µ¢®¹¾ïå�{�µ»®Ì³�®ÓÂöÁÍ ¸~µ¢¶Õª­À~ÔÁ¯Ò½ ¨«ª ¶Á¼�°¶�¸�¨­Í»Ôí±Èµ¢®°¶Õ¯²À~¨«³©±È¶ ÂöÁÍ ³ð±È¯²×»Âñ�¨­ÍþÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª¦±²¨«¾¿®¬¢¨«Í»½ ¯ÈÀ °¶�¸�®¹³Ö±Èµ»½|±�¾¿®¹®Ã±�±Èµ¢®í§£kl� ¬x¶Áעͻ¸�å�Ï�¶Ú¶ÁÍ¢®îÑêÍ¢¶|·�³Öµ¢¶|· ±²¶ ¸¢¶Æ±²µ¢¨Ð³�Àծñ¹å�¢ Í¢®Ì½ Ï»Ï¢¯²¶Î½ÁÂÒµ ±²¶Æ±Èµ¢¨«³Ï¢¯È¶Á¬¢ª«®°¾ ¨«³t±²¶ÌÂïȮ¹½ ±²®�Í¢®¹· °¶�¸�®¹³�¼�¯È¶Á¾ ®H¦�¨Ð³ð±È¨­Í¢Ôî¶ÕÍ¢®¹³¹å ¤ ®�ª«¶Î¶ÕÑí½ ±tØ»èÁ®�·�½ À�³�¶ ¼¦ÔÁ®Ã±²±²¨«Í¢ÔîÍ¢®¹·à°¶�¸�®¹³´¼�¯È¶Á¾¶ÁªÐ¸Ì°¶ê¸¢®¹³¹åY�»¶Á×¢¯´¶ ¼�±Èµ¢®°¾�¸¢¶ÁÍi® ±´¨«¾¿Ï¢¯È¶|èÁ®t±Èµ¢® ½Õ³�À꾿Ï�±²¶Á±²¨Ð°³Ë¶ ¼�±Èµ¢®©Â°¶�¸�®Áå|{�µ¢® Ø¢¼Ü±²µíª­®Ó½Á¸¢³Å±²¶ºÂöÕÍ»³ð±È¯²× Âæ±²¨«¶ÁÍ ³¶ ¼ ¼v½ ¾¿¨«ª­¨«®¹³�¶Á¼¦½Õ³�À꾿Ï�±È¶ ±²¨Ð°½Áª­ª«ÀîÔÁ¶ê¶�¸ïÂö�¸�®¹³¹å�Û � ¶|·Ë®¹èÁ®¹¯°zα²µ»®°Àɸ�¶îÍ»¶ ±t¾¿®°®Ã±t±Èµ¢® §£kl� ¬x¶Áעͻ¸�å Ý

ü���±t��� ýB³¦�»�ð� £ �R´��z��þ � � �

¤ ®�¯²®Ó°½Áª­ªz½ÉÂöÁÍ ³ð±È¯²×»Âñ²¨«¶ÁÍƶ ¼ � ½ ¾¿¾¿¨­Í¢Ô Ûv³²®°®�Í¢¶Á±²®Ó³t¼�¶Á¯ ç�®¹Âñ²×¢¯È® ¡ Ýæå�§©¨­èÕ®°Íڽ̰¶ê¸¢®Ð� Ô Êø÷�Â�÷²ùbÖ / zxÂïȮ¹½|±È®½ïÍ¢®°· Âö�¸�®��9� Ô Ê a ßÁ÷�Â�÷²ùW� Ö / ½Á³ ¼�¶Õª­ª«¶|·�³°åF� ¨­¯Ò³�±Ö®¹Í»Âö�¸�®º±Èµ¢®¿¾º®Ó³²³È½ ÔÕ® × ³�¨«Í¢Ôù� ±È¶ïÔծñ�½ÆÂö�¸�®¹·Ë¶Õ¯È¸ Z¶ ¼tª«®°Í¢ÔÁ±²µãÊøåù{�µ»®°Íizø½Á¸»¸�½ Í�®H¦ê±È¯È½Ú¬»¨Ç± ·tµ»¨«ÂÒµã¨Ð³�±Èµ¢®ÉÏ ½ ¯È¨Ç±ðÀ ¶ ¼�±²µ¢®í¬¢¨­±È³ ¶ ¼ C åù{�µ¢¨Ð³�Í¢®¹·�Âö�¸�®¹·Ë¶Õ¯È¸Øz Z �µ»½Õ³Öª­®¹Í¢Ô ±Èµ Ê a ßÁå��¢×¢¯²±²µ¢®¹¯²¾¿¶Õ¯²®}zz½Á³�½Á¯²ÔÕ×¢®¹¸~¨­Í�ç�®ÓÂæ±È×¢¯²® ¡ zz¨­¼´Ê ¨Ð³Ö¶ê¸»¸Øzz±Èµ¢®îÍ¢®¹· ¸�¨Ð³�±È½ Í Âîîù}� ù a ßÁå¢�±²µ»®°¯È·t¨«³²®©±²µ¢®�¸�¨Ð³�±È½ Í ÂÃ®Ö¾î½ À̯²®¹¾î½ ¨«Íïù å{�µ¢®¿Ï»½Á¯²¨­±ðÀ~ÂÒµ¢®ÓÂÒÑÚ¬¢¨Ç±�¶ÕÏ ®¹¯È½ ±²¨«¶ÁÍ ¸�¶ê®¹³Ö¨«¾ºÏ»¯²¶|èÕ® ¯È®°ªÐ½|±È¨­èÕ®º¸�¨Ð³�±È½ Í Â�¶Á¯�°¶ê¸¢®¹³Ö¶ ¼´¶�¸¢¸ ª­®¹Í¢Ô ±Èµ ¬¢×¢±�Í¢¶ ±�¼�¶Õ¯Âö�¸�®Ó³�¶ ¼´®°èÕ®°Íþª­®¹Í¢Ô ±Èµ�å,�»×¢¯�±Èµ¢®°¯È¾¿¶Á¯È®bz�±Èµ¢®Ì¯Ò½|±È®¿³²×TÙ�®°¯Ò³°å,��¶Ú·Ë®Ì¹½ Í Í¢¶ ±�¯È®°Ïx®¹½ ±�±²µ¢¨Ð³�¾¿®Ã±Èµ¢¶�¸ ±²¶Æ¶Á¬�±Ò½ ¨«Í¯È®¹½ ª«ª«ÀÌÔÁ¯È®¹½ ±�°¶ê¸¢®¹³¹å

ü���±t��± ý�àq¸ �x�^à��»�t¸Qÿ

§©¨«èÁ®°Í ½ÉÂö�¸�®Ð� Ô Êø÷]Â�÷²ùbÖ , zx°¯²®Ó½|±²®�½ÌÍ¢®°· Âö�¸�®7�9� Ô ÊÆá ì ÷]Â�÷Èù}�=Ö , ¬êÀï³²¨«¾ºÏ»ª­ÀƸ�®°ª«®Ã±È¨­Í»Ô ì Âöê¶Á¯Ò¸�¨«Í»½|±È®¹³¹å{�µ¢®�Í»®°· ¸�¨Ð³ð±Ò½ Í»Â°® ù � ·t¨«ª­ªé¬ ®ºù á ì m ù � m�ù»ål�»¶Á¯ ì ß ·Ë® ¹½ Íï±²µ»¨­Í¢ÑƶÁ¼ ±Èµ¢® ϻעͻÂæ±È×¢¯È¨­Í¢ÔɶÁÏx®°¯Ò½|±²¨«¶ÁÍÚ½Õ³½ÁÂÒµ»¨­®¹èΨ«Í¢Ô ±²µ¢®�®<Ùx®ÓÂæ±�¶Á¼é±Èµ¢®�¨­ÍêèÕ®°¯Ò³�®©¶ ¼ ±²µ¢®�Ï ½ ¯È¨Ç±ðÀÌÂÒµ¢®ÓÂÒÑ̬¢¨­±�¶ÁÏx®°¯Ò½|±È¨­¶ÕÍ Ûv¨­ÍÚ½ºèÁ®¹¯²À¶ê¶Õ³²®Ö³²®°Í ³�® Ýæå{�µ¢¨Ð³©¶ÁÏx®°¯Ò½|±²¨«¶ÁÍ~µ»½Á³ ±²µ»® ¬x®°Í¢®°Ø¢±�¶ ¼Ë¸¢®¹ÂïȮ¹½Õ³�¨«Í¢Ôɱ²µ¢®º®°Í»Â°¶�¸�¨­Í»Ôíª«®°Í¢ÔÁ±²µ~±²µ¢®¹¯²®¹¬ÎÀÚ¨«¾¿Ï¢¯È¶|èΨ«Í¢Ôɱ²µ¢®º¯È½ ±²®Õå�¬Ë×¢±½|±¿±Èµ¢®Ú³²½Á¾º®í±²¨«¾¿®Æ¨Ç±Ì³È½ÁÂïȨ­Ø Âîӳ�±Èµ¢®Ú¾¿¨­Í¢¨«¾ ×»¾ ¸�¨Ð³ð±Ò½ Í»Â°®í¶Á¼�±²µ»®Æ°¶�¸�®Ú½ Í»¸ã±²µê×»³î¸�®ÓÂïȮ¹½Á³²®¹³ ±²µ»®ï¯È®°ªÐ½|±È¨­èÕ®¸�¨Ð³ð±Ò½ Í»Â°®Áå¤ µ¢¨«ª­®º±Èµ¢¨«³Ö¶ÕÏ ®¹¯È½ ±²¨«¶ÁÍ~¸¢¶Î®Ó³©Í¢¶ ±ÖÀꨭ®¹ª«¸ ½ÉÔÕ®°Í¢®¹¯²¨Ð °¶ÁÍ»³�±²¯È×»Âñ²¨«¶ÁÍ ¾¿®Ã±Èµ¢¶�¸ ¼�¶Õ¯ÖÔÁ¶ê¶�¸~Âö�¸�®Ó³?z�¨­±Ö±²×¢¯ÈÍ»³©¶Á×¢± ±È¶¬x®ÉèÁ®¹¯²À ×»³²®Ã¼�×¢ª´¨«Íã³�Ïx®¹Â°¨«½Áª´Â¹½Á³²®¹³¹å�¢�¼Ü±²®°Íã±²µ¢®í¬ ®Ó³ð±ºÑÎÍ»¶|·tÍãÂö�¸�®î¼�¶Õ¯ ½~³²Ïx®¹Âè­Ø ÂÌÂÒµ»¶Á¨ÐÂî̶Á¼�zü³²½ À Ê�½ Í»¸ Â5z¾¿¨­Ôյα�¬x®�½¿Âö�¸�®Ö¶Á¬�±Ò½ ¨«Í¢®¹¸É¼�¯È¶Á¾ Ï¢×¢Í Âæ±²×»¯²¨«Í¢Ô·Ë®¹ª­ª=� ÑêÍ¢¶|·tÍíÂö�¸�®Ö¶ ¼ ª­¶ÕÍ¢ÔÁ®¹¯´¬»ª­¶�ÂÒÑ®°Í¢ÔÁ±²µ�å ú ÍƳ�× ÂҵﹽÁ³²®¹³°z³²Ï ®ÓÂèн ª�¼�®Ó½|±²×»¯²®Ó³¦¶ ¼�±²µ¢®�°¶�¸�®�½ ¯È®�¶ ¼Ü±²®¹Íî×»³²®¹¸ ±²¶�³²µ¢¶|·ã±Èµ»½|±ø±Èµ¢®�¸�¨Ð³�±È½ Í Âît¨Ð³øª«½Á¯²ÔÕ®°¯ ±²µ ½ Íº±²µ¢®�Ï¢¯²¶|èÕ®°Íº¬ ¶Õעͻ¸�åÏ�¶Á±²®�¼�×¢¯�±Èµ¢®°¯Ë±²µ ½|±´½Áª­ª ª­¨«Í¢®Ó½ ¯Ë°¶�¸�®¹³Ë½ ¯È®�ϢעͻÂñ²×¢¯È®¹¸ � ½Á¸»½ ¾î½ ¯Ò¸îÂö�¸�®Ó³��|�ê¶ ¶Õ¬êèΨ«¶Á× ³�ª«À Ϣ׻ͻÂæ±È×¢¯²¨«Í¢ÔºÂ°½ Í®¹½Õ¸±²¶ïÔÁ¶ê¶�¸ °¶ê¸¢®¹³¹å9{�µ»®7¯Î×¢®Ó³ð±È¨­¶ÕÍ~¯È®°¾î½ ¨«Í»³ �l¤ µ¢®°Í ¸�¶ê®¹³©¨­±©·´¶Á¯ÈÑ�� ½ÁÍ»¸ ·tµ ½|±ÖÏ»½ ¯²± ¶Á¼ü±²µ¢®î°¶ê¸¢®¹³©³�µ¢¶Õ×¢ªÐ¸ ¬x®Ï¢×¢Í Âæ±²×»¯²®Ó¸��

» ���3�

Page 55: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ü���±t��Ü � �z�Õ���»�²�x�����(¸§©¨«èÁ®°Í ½î°¶�¸�®Ð� Û�Êø÷�Â�÷²ùêÝ , ¶|èÕ®°¯�½ÁÍ ½ ª«Ï¢µ»½ ¬x®Ã±���z�ÂïȮ¹½ ±²®�½îÍ¢®¹· Âö�¸�®a�9� Û�ÊÚá ßÁ÷�Â^��÷ÈùÎÝ , ¬êÀïÂÒµ¢¶ê¶Î³�¨«Í¢Ô& ��� ½ Í ¸ªå(�ÎÔ Ê5Ö�½ Í ¸î¯²®°±È½Á¨­Í¢¨«Í¢Ô�¶ÕÍ¢ª«À ±Èµ¢¶Õ³²®�°¶ê¸¢®°·´¶Á¯Ò¸¢³ Z ¨­Íí·tµ¢¨«Âҵ̱²µ¢®�å ±ÈµÉÂöê¶Õ¯È¸�¨«Í»½ ±²®�¶Á¼�±²µ¢®©Âö�¸�®°·´¶Á¯Ò¸¨Ð³ & å({�µ»®�Âö�¸�®��9��¨Ð³�±²µ¢®¹ÍƶÁ¬�±Ò½ ¨«Í¢®¹¸í¬êÀɸ�®°ª«®Ã±È¨­Í»Ô¿±²µ¢®�å ±²µÚ°¶Î¶Õ¯È¸¢¨­Í»½ ±²® ¼�¯²¶Õ¾ ½ ª«ª�¯È®°¾î½ ¨«Í¢¨«Í¢Ô¿Âö�¸�®°·´¶Á¯Ò¸¢³¹å{�µ¢®�¯È®¹³²×¢ª­±²¨«Í¢ÔîÂö�¸�®�µ»½Õ³t¬¢ª«¶êÂÒÑɪ­®¹Í¢Ô ±ÈµïÊøå ú ¼ ·´®�Ï¢¨ÐÂÒÑ & ³²¶º±²µ»½ ±�¨Ç±�¨Ð³�±Èµ¢®�¾¿¶Õ³�±�ÂöÁ¾¿¾¿¶ÁÍ磌®Ã±�±È®°¯�¨«ÍƱ²µ»®�å ±ÈµÂöê¶Õ¯È¸�¨«Í»½ ±²® Û ½ ¾¿¶ÁÍ»Ô Âö�¸�®¹·Ë¶Õ¯È¸¢³Ë¶ ¼·��Ýűȵ¢®°Íï½|±Ëª«®¹½Õ³ð± " � ï " ¾º®Ó³²³È½ ÔÕ®¹³Å·t¨­ª«ª�¯²®¹¾¿½Á¨­Íɨ­ÍB�9�vå(�ꨫͻ°®©Â°¶ê¸¢®°·´¶Á¯Ò¸¢³¸�¨KÙx®¹¯²®Ó¸ ¨­Í¡ù�Ïx¶Õ³²¨Ç±È¨­¶ÕÍ»³º±²¶ã³�±È½Á¯�±î·t¨­±²µizt½ÁÍ»¸ ±²µ¢®Ú¶ÕÍ¢ª­À Âö�¸�®¹·Ë¶Õ¯È¸¢³ ±Èµ»½|±Ì¯È®°¾î½ ¨«Í ½ ÔÁ¯È®°®Ó¸ã¨«Í ±²µ¢® ¸¢®°ª«®Ã±²®Ó¸Âöê¶Õ¯È¸�¨«Í»½ ±²®bzαȵ¢®�Í¢®°·àÂö�¸�®¹·Ë¶Õ¯È¸»³´½Á¯²®�³�±²¨«ª­ªé½|± � ½Á¾º¾¿¨«Í¢Ô̸�¨Ð³ð±Ò½ Í»Â°®�½|±tª­®Ó½Á³�±�ù»å�t®Ó³ð±È¯²¨ÐÂæ±È¨­¶ÕÍï¸�¶ê®Ó³�¨­¾¿Ï¢¯È¶|èÁ®©±²µ»®�¯²®¹ª«½ ±²¨«èÁ®Ö¸�¨«³�±È½ÁÍ»Âî}z�¬¢×�±�Í»¶ ±tÍ¢®¹Â°®¹³È³²½Á¯²¨«ª«À¿±²µ¢®�¯Ò½|±È®Áå

ü���±t��� �ð�¢�z�x�ßý �¢�t�qà �x�§©¨«èÁ®°Íþ½ÆÂö�¸�®Ó³a� - Ô Ê - ÷� - ÷²ù - Ö , ½ Í»¸1� / Ô Ê / ÷] / ÷Èù / Ö , z�±Èµ¢®Ì¸�¨«¯²®ÓÂæ±�Ï¢¯È¶ê¸¢×»Âæ±�¶Á¼Õ� - ½ Í»¸1� / z ¸�®°Í»¶ ±²®Ó¸� -� � / z ¨«³ ½ Í Ô Ê - Ê / ÷] -  / ÷Èù - ù / Ö , ÂöÁÍ ³ð±È¯²×»Âñ²®Ó¸ï½Õ³t¼�¶Õª­ª«¶|·�³°ånk�¨«®°· ½î¾¿®Ó³²³È½ ÔÕ®©¶Á¼(� -� � / ½Á³ ½� / ¬ÎÀ� -¾î½|±È¯²¨=¦� å í Í»Âö�¸�®Ë®¹½ÕÂÒµ�¯²¶|·�¶Á¼� ¬êÀÖ±²µ»®´Â°¶ê¸¢®Õ� - ±²¶©¶Á¬�±Ò½ ¨«Í ½ ÍF / ¬êÀ�Ê - ¨«Íα²®°¯È¾¿®¹¸�¨Ð½ ¯ÈÀÖ¾î½|±²¯È¨=¦�å í ͻ°¶�¸�®®¹½ÕÂÒµ~Âöժ­×»¾ºÍ~¶ ¼ø±²µ»¨«³©¨«ÍձȮ°¯È¾¿®¹¸�¨Ð½ ¯ÈÀí¾î½ ±²¯È¨*¦Ú·t¨­±²µ ±Èµ¢®ª� / Âö�¸�® ±²¶íÔÁ®Ã±Ö½ Í Ê / ¬êÀÆÊ - ¾î½|±È¯²¨=¦Ú¯²®¹Ï¢¯È®¹³²®°ÍᲨ«Í¢Ô±²µ»® Âö�¸�®¹·Ë¶Õ¯È¸ï®°Í Âö�¸�¨«Í¢Ô� å�{�µ¢¨Ð³tÏ¢¯È¶ê°®¹³È³t·´¶Á¯ÈÑê³�ÔÕ®°Í¢®¹¯È½Áª­ª«À��ż�¶Á¯�ª«¨­Í»®¹½ ¯©½Á³t·´®°ª«ªz½Õ³tÍ¢¶ÁÍD� ª«¨­Í»®¹½ ¯ Âö�¸�®¹³�� -½ Í ¸�� / å ¤ ®ºØ»¯È³�±�³�µ»¶|· ±²µ»½ ±�±²µ¢®¿¯È®¹³²×¢ª­±²¨«Í¢ÔÚÂö�¸�®¿µ»½Á³Ö¸�¨Ð³�±È½ Í Âîî½|±�ª«®¹½Á³�±�ù - ù / ¨«Íþ®°¨­±²µ¢®¹¯�°½Á³²®Áå7{�µ¢®°Í ·´®³²µ¢¶|· ±Èµ»½|±´¨Ç¼·� - ½ Í»¸�� / ½Á¯²®tª«¨«Í¢®¹½Á¯°zÁ±²µ¢®¹Íî±²µ¢® ¯²®Ó³�×»ªÇ±È¨­Í¢Ô Âö�¸�®�¨Ð³Å½Áª«³²¶�ª­¨«Í¢®Ó½ ¯\zÕ½ Í ¸º¼�×¢¯�±Èµ¢®°¯È¾¿¶Á¯È®�¨Ð³ø±²µ»® ³È½ ¾¿®½Á³�±²µ»®¿Â°¶�¸�® ±Èµ»½|±Ö·´¶Á×¢ªÐ¸ ¬x® ¶Õ¬�±È½Á¨­Í»®¹¸ ¬êÀÚ®¹Í»Âö�¸�¨«Í¢Ô̱ȵ¢®îÂöժ­×¢¾¿Í»³ ·t¨­±²µ1� / Ø»¯Ò³�±Ö½ÁÍ»¸Æ±²µ»®°Í ®°Í»Â°¶ê¸¢¨­Í¢Ôí±²µ»®¯È¶|·�³Ë·t¨­±²µù� - å¤ ®íÏ¢¯È¶|èÁ®Ì±²µ¢¨Ð³ºÍ¢®°· °¶�¸�®Éµ»½Õ³¿¸�¨«³�±È½ÁÍ»Âîï½|±¿ª­®Ó½Á³�±ºù - ù / åËU˶ÕÍ»³�¨Ð¸�®¹¯ ±ð·´¶ ¸�¨Ð³�±²¨«Í»Â汿¾¿®¹³È³²½ÁÔÁ®Ì¾î½|±È¯²¨ÐÂîӳ� -½ Í ¸� / åüç�®°±�� - ½ Í»¸�� / ¬x®Ö±²µ¢®�¨«Íα²®¹¯²¾¿®¹¸¢¨«½ ±²®�¾î½|±È¯²¨ÐÂîӳ�¶Á¬�±Ò½ ¨«Í¢®¹¸ï½|¼Ü±È®°¯t±Èµ¢®ÖØ»¯Ò³ð±�³�±²®°ÏƶÁ¼é±Èµ¢®�®°Í»Â°¶�¸�¨­Í»ÔÏ¢¯È¶�Âȳ¹å çz®Ã± è - ½ Í ¸ è / ¬x®©±²µ¢® ػͻ½Áªx°¶ê¸¢®°·´¶Á¯Ò¸¢³ü¶Õ¬�±È½Á¨­Í¢®Ó¸î¼�¯È¶Á¾ ±²µ»®¹³²® ¾î½|±È¯²¨ÐÂîӳ°å|�ê×¢Ï»Ï ¶Î³�®� - ½ Í»¸� /¸�¨KÙx®¹¯�¶ÁÍ~±²µ¢®ªå ±²µ ¯È¶|·�åa{�µ¢®°Í�� - ½ Í»¸�� / ¾ ×»³�±�¸�¨�Ù�®°¯�¶ÕÍ ½ ±�ª­®Ó½Á³�±Öù - Âöê¶Á¯Ò¸�¨«Í»½|±È®¹³©¶ÁÍ~±²µ¢®ªå ±²µ ¯È¶|·�å ú ÍÏ»½Á¯�±È¨«Â°×¢ª«½Á¯�±Èµ¢®°ÀÚ¸�¨KÙx®¹¯ ¶ÕÍ~½|±©ª­®Ó½Á³�± ù - °¶Áª«×¢¾¿Í»³°å9��½ À V - ÷ �°�?� ÷ V���� ½ ¯È®�¨­Í ¸�¨«Â°®¹³©¶ ¼Åù - ³²×»ÂÒµ~°¶Áª«×¢¾¿Í»³ ·tµ¢®°¯È®� - ½ÁÍ»¸�� / ¸�¨KÙ�®°¯ÓåB{�µ»®°Í�±Èµ¢®ÉÂöժ­×»¾ºÍD� ¬êÀW� °¶Áª«×¢¾¿Í�®°Í»Â°¶�¸�¨­Í»ÔÚ¯²®Ó³�×¢ª­±È³ ¨­Í Âö�¸�®°·´¶Á¯Ò¸¢³ è - ½ÁÍ»¸ è / ·tµ¢¨ÐÂÒµ¸�¨KÙx®¹¯�¶ÁÍ�½ ±�ª­®Ó½Á³�±�ù / °¶Î¶Õ¯È¸¢¨­Í»½ ±²®Ó³Ö¶ÁÍ ®¹½ÁÂÒµþ¶Á¼Ë±Èµ¢®¹³²®Ìù - °¶Áª«×¢¾¿Í»³¹å,{�µê×»³ è - ½ Í»¸ è / ¸�¨KÙ�®°¯�¶ÕÍþ½ ±�ª­®Ó½Á³�±ù - ù / ®°Íα²¯È¨«®¹³¹åÏ�®?¦ê±©·´®º³²µ¢¶|·à±Èµ»½|±�� -� � / ¨«³©ª«¨­Í¢®Ó½ ¯©¨Ç¼�� - ½ÁÍ»¸�� / ½ ¯È® ª«¨­Í¢®Ó½ ¯\z�½ Í»¸ ±²µ¢®º®°Í»Â°¶�¸�¨­Í»Ô̼�עͻÂñ²¨«¶ÁÍ»³©×»³²®¹¸ ½ ¯È®ª«¨­Í¢®Ó½ ¯�¼�×¢Í Âæ±²¨«¶ÁÍ ³°å

èÐé !¢s�� Çz���ÉÈ <?> ä - ��Å � � Æ � �, VW<?2:<?I[03>�<�>�CD<ÐP]G\4b< � -ª03254F;=<?> ä / ��Å ���DÆ � �, VW<?2:<?I[03>�<9>�CD<aP�G\4b< � / @FA:CR<H2>�CD<£4 ' I[<�P?>DZ5I[G°4�MRPH>YP�G°4}< � -� � / ' Kl0�; ' 2:<�0�I�P�G°4}<l>�CD0�>5CD03K�0�K ' >�K�P�G\4b<?c(G3I[43K ÿiä /! ä - �" ��Å ���^ÆD� �, � @äÉ{�� !¢yiå¥æ x ³©½ÌÂöÕÍ»³²®°¯Î×¢®°Í Âîbzx·´®�Í¢¶ ±È®�±Èµ»½|±©¨Ç±Ö¸�¶ê®¹³ Í¢¶ ±©¾¿½ ±�±È®°¯�¨­¼Å·´®�®°Í Âö�¸�®�±Èµ¢® ¯È¶|·�³�Ø»¯Ò³�±©½ Í ¸Æ±²µ¢®¹Í±²µ»®�ÂöÁª«×¢¾¿Í»³t½Õ³t½ ¬x¶|èÁ®©¶Á¯tèꨫ°®�èÁ®¹¯È³È½¢ågÖy3hih:j {�µ»®�Ï¢¯²¶ê¶Á¼�¼�¶Áª«ª­¶|·�³´®Ó½Á³²¨­ª«Àî¼�¯È¶Á¾ ±Èµ¢®©¼v½ÁÂæ±t±Èµ»½|±�±Èµ¢®�¨­ÍαȮ°¯È¾º®Ó¸�¨Ð½|±²®Ö¾î½|±È¯²¨=¦É®\¯Õ× ½ ªÐ³# ä - ½ Í»¸É±²µê×»³±²µ»®Úػͻ½Áª�¾î½|±²¯È¨=¦ ®°¯Î×»½Áª«³ ä /� Û$ ä - Ýæå&{�µ¢®Ú¨«Íα²®°¯ÒÂÒµ»½ÁÍ¢ÔÁ®Ó½ ¬¢¨«ª­¨­±ðÀþ¼�¶Áª«ª«¶|·�³¿¼�¯²¶Õ¾ ½Õ³²³²¶�Âèн|±²¨«èê¨Ç±ðÀ�¶Á¼�¾¿½ ±²¯È¨*¦¾ ×»ªÇ±È¨­Ï¢ª«¨Ð°½|±È¨­¶ÕÍ�å«{�µ¢®©ª­¨«Í¢®Ó½ ¯Ë¼�¶Áª«ª­¶|·�³Å¼�¯²¶Õ¾ ±²µ¢®©¼v½ÕÂæ±´±²µ»½ ±´±Èµ¢®©¾¿½ ±²¯È¨*¦ ä / - ä - a ä / / ä - ¨Ð³Láð× ³ð±�±²µ»®®°Í Âö�¸�¨«Í¢Ô¿¶ ¼% - a / ½ Í»¸É±²µ¢®�¾î½ ±²¯È¨*¦ & ä / - ä - ¨Ð³�±²µ»®�®°Í»Â°¶ê¸¢¨­Í¢Ô¿¶Á¼ & - z�·tµ»®°¯È® & �,Å , åê�ëAì0írîiï ðzì7ñ ú ÍÉÔÁ®¹Í¢®°¯Ò½ ª»±²µ¢®�¸�¨«¯È®¹Âæ±´Ï¢¯È¶ê¸¢×»Âæ±�¶ ¼�±ð·´¶ °¶�¸�®¹³�¸�®¹Ï ®¹Í»¸¢³´¶ÁÍî±Èµ¢®�ÂÒµ¢¶Á¨ÐÂî ¶ ¼�±Èµ¢®©®°Í»Â°¶ê¸¢¨­Í¢Ô ¼�עͻÂñ²¨«¶ÁÍ�å

» ���b�

Page 56: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ü¯È¶|èÁ®�±²µ»½ ± ±Èµ¢¨«³©¨Ð³©Í¢¶ ±©±²µ¢®¿Â°½Õ³�® ¼�¶Á¯©ª­¨«Í¢®Ó½ ¯ÖÂö�¸�®¹³¹åa�êÏx®¹Â°¨ÇØ Â¹½ ª«ª­À}z�Ï¢¯È¶|èÁ®�±Èµ»½|±Ö¨Ç¼ ä - ½ Í»¸ ä � - ÔÁ®°Í»®°¯Ò½|±²®7� -½ Í ¸ ä / ½ Í»¸ ä �/ ÔÕ®°Í¢®¹¯È½ ±²®�� / z�±Èµ¢®°Í ÿiä /� ä - �& � ÿiä �/ ä � - �& �Îåx Ôν ¨«Íiz�±²µ»®¿¸¢¨­¯È®¹Âñ©Ï¢¯È¶�¸�×»Âñָ�¶ê®Ó³ Í»¶ ±�µ¢®°ª«Ï~¨«Í ±²µ¢®îÂöÕÍ»³�±²¯È×»Âæ±È¨­¶ÕÍ ¶ ¼Ë½Õ³�À꾿Ï�±È¶ ±²¨Ð°½Áª­ª«ÀÚÔÁ¶ê¶�¸ °¶ê¸¢®¹³¹å í å Ô»å�¨­¼·´®Ö³�±È½Á¯�±È®¹¸í·t¨Ç±Èµï°¶�¸�®¹³l� - ½ Í ¸�� / ¶ ¼ ¯È½ ±²®�½ Í ¸É¯È®°ªÐ½|±È¨­èÕ®©¸�¨Ð³�±È½ Í Âî -- E z�±Èµ¢®°Íí±²µ¢®�¯È®¹³²×¢ª­±²¨«Í¢ÔîÂö�¸�®Ö¨Ð³�·Ë®Ó½ ÑÁ®¹¯½ Í ¸Éµ»½Õ³�¯È½ ±²®�½ Í ¸í¯È®°ªÐ½|±È¨­èÕ®©¸¢¨«³�±È½ÁÍ»Âî�¶Á¼é¶ÁÍ»ª­À -- E`E å�궿¼v½Á¯�½ ª«ª�±²µ¢®�¶ÕÏ ®¹¯È½ ±²¨«¶ÁÍ»³´¶ÕÍÆ°¶�¸�®¹³�µ»½ èÕ®Ö¬ ®¹®°Íƨ­Í»®�Ù�®¹Âæ±È¨­èÕ®�¨­ÍÆÔծñ�±È¨­Í»Ô¿±²¶Ì½Á³²À꾿Ï�±²¶Á±²¨Ð°½ ª«ª«ÀîÔÁ¶ê¶�¸ï°¶�¸�®¹³¹å ú ͯȮñ²¯È¶Õ³²Ïx®¹Âæ±´¶ÁÍ¢® ¾î½ À¿³È½ Àº±²µ»½ ±Ë±Èµ¢¨Ð³Ë¨Ð³Ë¬ ®Ó°½ × ³�®Ö½ ª«ª»±Èµ¢®¹³²®©¶ÁÏx®°¯Ò½|±²¨«¶ÁÍ ³øØD¦�®¹¸Ì±²µ¢®Ö½ ª«Ï¢µ»½Á¬ ®°±�½ÁÍ»¸¿±È¯²¨«®¹¸Ì±²¶ºÏ¢ª«½ À½ ¯È¶Á׻ͻ¸~·t¨­±²µþ±Èµ¢®Ì¶Á±²µ¢®¹¯Ö±²µ¢¯È®°®ÌÏ ½ ¯Ò½ ¾¿®Ã±È®°¯Ò³°å x ³²¨­¾¿Ï¢ª«À ¬¢×�± ¬¢¯È¨«ª­ª«¨«½ÁÍα�¨«¸�®Ó½Dz ¸�×¢®î±È¶ù�¢¶Á¯ÈÍ¢®¹À"Ô ���3Ö�z ³²µ¢¶|·´®¹¸µ¢¶|· ±È¶þ®H¦ê±²®¹Í»¸ã±Èµ¢®ÆÔÕ½Á¾º®í±²¶ ¨«Í»Âê«×»¸�®ï±²µ»®Æ½Áª­Ï»µ»½ ¬x®Ã±Ì³²¨­ì¹®ï¨«Í ±²µ¢®ÆÏ»½Á¯È½Á¾º®°±²®¹¯È³º½ ª­±²®¹¯²®Ó¸(' ®?¦êÏx¶Á¨­±²®Ó¸�¬êÀ�±²µ»®¶ÁÏx®°¯Ò½|±È¨­¶ÕÍ»³Ö¶ÁÍ�°¶ê¸¢®¹³¹å�{�µ¢¨Ð³�¶ÁÏx®°¯Ò½|±È¨­¶ÕÍþ¨«³Ö±Èµ»½|± ¶ ¼*)²ÂöÕͻ°½ ±²®¹Í»½|±È¨­Í¢ÔÚ°¶ê¸¢®¹³,+¢å,{�µ¢¨Ð³�¾¿®°±²µ¢¶�¸ ±²×»¯²Í»³�¶Á×�±�±È¶µ»½ èÕ® Ï¢¯È¶ ¼�¶Õעͻ¸ ¨«¾ºÏ ½ÁÂæ±�¶ÕÍ ¶Õ×¢¯�½ ¬»¨­ª«¨Ç±ðÀ ±²¶ÚÂöÕÍ»³ð±È¯²× Âæ±�½Á³²À꾺Ϣ±²¶ ±È¨«Â¹½ ª«ª­À~ÔÁ¶ê¶�¸~¬¢¨«Í»½Á¯²À~°¶�¸�®¹³¹å ¤ ®Ì¸�®Ó³²Â°¯²¨«¬x®±²µ»¨«³t¾¿®°±²µ¢¶�¸Æ½ Íï¨Ç±Ò³�ÂöÕÍ»³²®°¯Î×¢®°Í Âî¹³´¨«Íï±²µ¢®�Í¢®?¦ê±�³�®ÓÂæ±²¨«¶ÁÍzå

̪ñ�- . �Ðö�����Ò½õ�ö���ÒYø��7ö �� ����÷�õ@Ô

{é¶ ¾¿¶ ±²¨«è|½|±È®î±²µ¢®íÍ¢¶ ±È¨­¶ÕÍ�¶ ¼�ÂöÕͻ°½ ±²®¹Í»½|±È¨­¶ÕÍizzª«®Ã±º×»³�¯È®¹Â¹½ ª«ªø±²µ¢®í®H¦¢½ ¾¿Ï¢ª«®Ì×»³²¨«Í¢Ô·�t®¹®¹¸����ê¶Áª«¶Á¾¿¶ÕÍþ°¶�¸�®¹³�¶ÕÍUn� Ï»ª«½ ÀÕ®°¯Ò³°å���®°®¹¸^���ê¶Õª­¶Õ¾¿¶ÁÍÚÂö�¸�®Ó³t·Ë®¹¯²®�¸�®°Ø»Í¢®Ó¸Æ¶ÁÍڪн ¯ÈÔÁ®�½ ª«Ï¢µ»½Á¬ ®°±È³°z»·tµ¢¨«ª­®§Un� Ï¢ªÐ½ ÀÁ®¹¯È³´·´¶Á¯ÈÑÉ·t¨­±²µÆ±²µ»®¬¢¨«Í»½ ¯ÈÀ ½ ª«Ï¢µ»½Á¬ ®°±¹å � ¶|·´®°èÁ®¹¯°z�ÔÕ¨­èÕ®°Í ½ÁÍËÔ Êø÷]Â�÷²ùbÖ /,/ �t®°®Ó¸�����¶Áª«¶Á¾¿¶ÁÍ~°¶�¸�®bz�·´®º¨­Íα²®¹¯²Ï»¯²®°±²®¹¸~±²µ»¨«³�°¶ê¸¢®º½Õ³©½ÁÍÔ Ê10|÷]Â�0|÷Èù�Ö / Ì ' 2503INT °¶�¸�®Æ¬ÎÀ�Í ½ ¨«èÁ®°ª«Àþ¯²®¹Ï¢¯È®¹³²®°ÍᲨ«Í¢Ô ±Èµ¢®Ú½ ª«Ï¢µ»½Á¬ ®°±º¶Á¼�±²µ»®����ãÂö�¸�®}zÅ®¹ª­®¹¾º®¹Íαȳº¶ ¼�Å /,/ z˽ճ¬¢¨«Í»½ ¯ÈÀî³ð±È¯²¨«Í¢Ôγü¶ ¼éª­®¹Í¢Ô ±Èµ20êå«{�µ¢®�¾î½Á¨­Íí¨«¸�®Ó½�¶Á¼zÂöÁÍ Â°½|±È®°Í»½ ±²¨«¶ÁĮ́гű²¶ ¼�¶ê°׻³Ë¶ÁÍî±Èµ¢¨«³3)²Í»½ ¨«èÁ® ¨­Íα²®¹¯²Ï»¯²®°±È½|±È¨­¶ÕÍ�+³�±²®°Ïî½ÁÍ»¸º±²¶�ÔÕ®°Í¢®¹¯È½Áª­¨«ì°®�¨­±Å³�¶Ö±Èµ»½|±ü®¹ª­®¹¾º®¹Íαȳü¶Á¼îÅ /,/ ¹½ Í¿¬x®t¯²®¹Ï¢¯²®Ó³�®¹Íα²®¹¸ ¬êÀ ¬¢¨«Í»½Á¯²Àº³ð±È¯²¨«Í¢ÔÕ³¦¶Á¼�ª­®¹Í¢Ô ±ÈµºªÐ½ ¯ÈÔÁ®¹¯±²µ ½ Í40êå1Ï�¶Á±²®í±²µ»½ ± ±Èµ¢®ï¾¿½Á¨­Í ª­¶Î³²³ ¨­Í Ï ®¹¯�¼�¶Õ¯²¾î½ÁÍ»Âį̂г¿¸�×¢®É±²¶ ±²µ¢®í¼v½ÁÂñ ±²µ ½|±¿¨­Í ÔÁ¶Á¨«Í¢ÔÚ¼�¯È¶Á¾ ³�±²¯È¨«Í¢ÔÕ³ ¶ ¼ª«®°Í¢ÔÁ±²µïÊ Û�¶|èÕ®°¯eÅ /5/ Ýű²¶º¬¢¨«Í»½ ¯ÈÀ̳ð±È¯²¨«Í¢Ôγ˶Á¼éª«®°Í¢ÔÁ±²µíÊ10Wz»·Ë®Ö¸�¨Ð¸ÉÍ¢¶Á±t¨­Í»Â°¯²®Ó½Á³²®�±Èµ¢®Ö¾º¨«Í¢¨«¾ ×¢¾¤¸�¨Ð³ð±Ò½ Í»Â°® ¶Á¼z±²µ»®Âö�¸�®}z�½ Í»¸ ³�¶ïª«¶Õ³�±©¨«Í~±È®°¯È¾î³ ¶Á¼ü±²µ»®º¯È®°ªÐ½|±È¨­èÕ® ¸�¨Ð³�±È½ Í ÂîÁå x ¹½ ¯È®Ã¼�×¢ªøÂÒµ¢¶Õ¨«Â°® ¶ ¼Ë±²µ¢®º®°Í Âö�¸�¨«Í¢Ôí¨«Í ±²µ¢®î³²®¹ÂöÕÍ»¸³�±²®°Ï ¶Á×¢Ôյα�±²¶í¬ ®¿½ ¬¢ª«®�±È¶É¾¿¶�¸�®°¯Ò½|±È®�±Èµ¢¨«³©ª«¶Õ³È³?z�½ Í ¸Æ±²µ¢¨Ð³©¨«³ ®H¦¢½ÕÂæ±²ª«ÀÆ·tµ»½|± ±²µ¢®º¾¿®Ã±Èµ¢¶�¸ ¶ ¼Å°¶Áͻ¹½|±È®°Í»½ ±²¨«¶ÁͽÁ¸»¸�¯²®Ó³²³²®¹³¹åx ³ ¨«Í ±²µ»®ºÂ¹½Á³²®�¶ ¼Å¸�¨«¯È®¹Â汩Ϣ¯È¶ê¸¢×»Âæ±�Âö�¸�®Ó³?zx¨Ç±Ö¨Ð³�¬x®¹³�± ±È¶É®?¦êÏ»ª«½Á¨­Í~°¶Áͻ¹½|±È®°Í»½ ±²¨«¶ÁÍÚ¶ ¼Å°¶�¸�®¹³ ¨­Í ±²®°¯È¾î³�¶Á¼ü±²µ»®®°Í Âö�¸�¨«Í¢Ôº¼�עͻÂæ±È¨­¶ÕÍ»³¹å«�騫¯Ò³ð±�·´®�¸�®Ãػͻ®Ö±²µ¢®�_�� ¼�¶Õª«¸ïÂöÕͻ°½ ±²®°Í ½|±²¨«¶ÁÍí¶ ¼ø½¿³�¨«Í¢ÔÁª«®Ö®°Í»Â°¶�¸�¨­Í»Ô ¼�׻ͻÂæ±È¨­¶ÕÍ�å�ï{���� s��¹s�h��äÇz�76&% G�IeZDG3K ' > ' $3< ' 2î>�<�VW<HI _�X ; ' 25<]0�I ' >�T£Z5I[<HKH<?I4$ ' 2WV,Ì ' 8 <�PH> ' $3<a�ª0]Z�9 � Å , Ü ÙôÅ �, 03254�<?2:P�G°4 ' 2WVE�M^2:P?> ' G324: � Å �, Ù Å � , >�CD< _J� ¼�¶ÁªÐ¸ °¶Áͻ¹½|±²®¹Í»½|±È¨­¶ÕÍ G�E*: ' K�>�CD<aE�M^2:P?> ' G�2<;�=Y : � Å Y , Ü Ù Å � Y, V ' $�<?2�Ì?T( � - ÷ �°�?� ÷[� Y *?>Ù ( : Û 9 Ûv� - ݲÝæ÷ �°�?� ÷ : Û 9 Ûv� Y Ý²Ý * X c·CD<?I[< � æ �,Å , Ü EHG�I å(�ÎÔ _�Ö @{ËÀÎÏ»¨«Â¹½ ª«ª­Àɱ²µ¢® ®H¦¢½ÁÂñ�¾î½ Ï 9 � Å , Ü ÙÅ �, ¨Ð³�¨«¯²¯È®°ª«®°è|½ÁÍÕ±�³²¶î·´®�·t¨­ª«ª¦³�¨«¾¿Ï¢ª­À飼ÔÁÍ¢¶Õ¯²®�¨­±¹åq�»×¢¯²±²µ¢®¹¯�¨­¼�_ø¨«³ Âê«®¹½Á¯¼�¯È¶Á¾ ÂöÕÍձȮH¦ê±°zê·´®�·t¨«ª­ªx¨«ÔÁÍ¢¶Õ¯²®�¨­±t½ Í»¸Ì³²¨«¾ºÏ»ª­Àî¯È®Ã¼�®¹¯Å±È¶�±²µ»® ¾î½ Ï ;@: å ¤ ® Í¢¶|·¡¸�®°Ø»Í¢® ±²µ¢®ÖÂöÕͻ°½ ±²®¹Í»½|±È¨­¶ÕÍ¼±ð·´¶¿Â°¶�¸�®¹³¹å�ï{���� s��¹s�h��äÇz�=#ý% G�I,<H25P�G°4 ' 2WVÐE�M^2:P?> ' G�2DK�:�- � Å � �, Ü � Ù Å � �, Ü� 032:4�: / � Å ���, Ù ÅR� �, A 03254�K?G3�ª< ' �qZ:; ' P ' >Ì ' 8 <]P?> ' G32B9 � Å�, Ü � Ù Å ���,BC X >�CD<ªP�G�2:P�03>�<H2503> ' G32 G�ED:�-B032543: / ' Ka>JCR<ÕE�M^2:P?> ' G�2�:£-%;�: / � Å � � ���, ÙÅ � � � �,V ' $�<?2�Ì?T Å � � ���, =�E �á:Ù Å � �, Ü �GF �á5Ù Å � �, Ü � =áîÙIHvÅ ���,KJ � ��L F �á:ÙMHDÝ � �,NJ � � á:Ù Ý � � � �, �ë 2d>JCR<��ª<NK�K?0?VW< ( � - ÷ �°�?� ÷t� � � * ' K��ª0]ZbZR<�4�>�Gª>�CD<Ð$3<]P?>�G3IO; =� � : / Û : - Û ( 9 ~Ø- Û�� - ÝÃ÷ �°�?� ÷ 9 ~Ø- Û�� � � Ý * Ý²Ý @ú ¼´±²µ¢®î®¹Í»Âö�¸�¨«Í¢Ôï¼�עͻÂñ²¨«¶ÁÍ»³ : - ÷ : / ½ ¯È®¿ª­¨«Í¢®¹½Á¯�¾î½ Ï»³ÖÔÕ¨­èꨫ͢Ôƪ­¨«Í¢®¹½Á¯�Âö�¸�®Ó³�� - ½ Í»¸Î� / ¯²®Ó³�Ïx®¹Âñ²¨«èÁ®°ª«Àbzz±²µ¢®¹Í:�-�;": / ¨Ð³�½ïª­¨«Í¢®¹½Á¯�¾î½ Ï ·tµ¢¶Õ³²®¿¨­¾î½ ÔÕ®¿¨«³�¸¢®°Í¢¶Á±²®¹¸ ¬êÀ�� -�; � / å ú ±�¾î½ À ¬x®îèÁ®°¯È¨­Ø»®¹¸~±²µ»½ ±Ð� -?; � / ¨Ð³�½

» ��� »

Page 57: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

¼�עͻÂñ²¨«¶ÁÍƶ ¼|� - ½ Í»¸B� / ½ ª«¶ÁÍ¢®Ö½ Í»¸íÍ¢¶Á±t¸¢®°Ïx®°Í»¸�®¹Íα�¶ÁÍ : - ÷ : / ¶Á¯ 9 å ú ±t¨Ð³tÂÃ×»³�±²¶Õ¾¿½Á¯²À¿±È¶î°½ ª«ª�±²µ»®Ö°¶�¸�®�� -±²µ»® G3M^>�<HI�P�G°4}< ½ÁÍ»¸Ì±Èµ¢®�Âö�¸�®a� / ±Èµ¢® ' 2R25<HIaP�G\4b< z»½ Í»¸�� - ; � / ¨Ð³´±²µ¢®�°¶Áͻ¹½|±²®¹Í»½|±È®¹¸ïÂö�¸�®Õå{�µ¢®�Í¢®?¦ê±�Ï»¯²¶ÕÏ ¶Î³�¨­±²¨«¶ÁÍïèÁ®¹¯²¨­Ø»®¹³Ë±Èµ¢®�¸�¨Ð³ð±Ò½ Í»Â°®�Ï¢¯²¶ÕÏ ®¹¯�±È¨­®Ó³´¶ ¼øÂöÁÍ Â°½|±È®°Í»½ ±²®Ó¸í°¶ê¸¢®¹³¹å

gÖy3h+Neh�OÓs��ÓsvhP�ËÇz�Ð}Éë E � - ' KF032 Ô Ê - ÷� - ÷²ù - Ö�, Ü � /tP�G°4}<�03254 � / ' KF032 Ô Ê / ÷] / ÷Èù / Ö , /tP�G°4}<F>JCR<H2 � -?; � / ' KF0�2Ô Ê - Ê / ÷� -  / ÷²ù - ù / Ö , /tP]G\4b<\@gÖy3hih:j {�µ¢®�¶ÁÍ¢ª«ÀÉÏ ½ ¯²±´±Èµ»½|± Í¢®°®Ó¸¢³�±²¶î¬x®�èÁ®¹¯²¨­Ø»®Ó¸í¨Ð³´±²µ»® ¸�¨Ð³ð±Ò½ Í»Â°®Áå({é¶Ì¸�¶î³�¶Ì°¶ÁÍ»³²¨Ð¸�®°¯�±Èµ¢®�®°Í»Â°¶�¸�¨­Í»Ô¼½ºÍ¢¶ÁÍD� ì¹®°¯È¶º¾¿®Ó³²³È½ ÔÕ®Áå|{�µ¢®�®°Í Âö�¸�¨«Í¢Ô¿¬ÎÀ : - ª«®¹½Á¸»³´±²¶Ì½ Íƨ«Íα²®°¯È¾¿®¹¸�¨Ð½|±È®Ö·Ë¶Õ¯È¸É¼�¯²¶Õ¾�Å � �, Ü � ±²µ»½ ±�¨­ÍÆÍ¢¶ÕÍ^� ì°®°¯È¶¨«Í ù - °¶Î¶Õ¯È¸¢¨­Í»½ ±²®Ó³°å£{�µ¢® Ê - � ¼�¶Õª«¸ ÂöÁÍ Â°½|±È®°Í»½ ±²¨«¶ÁÍÚ¶Á¼ : / ½ÁϢϢª«¨­®Ó¸Ú±È¶Ì±²µ»® ¯È®¹³²×¢ª­±²¨«Í¢Ôí°¶ê¸¢®°·´¶Á¯Ò¸ÆÏ¢¯²¶�¸�× Âî¹³©ù /Í¢¶ÕÍ^� ì¹®°¯È¶í³²Àê¾ ¬x¶ÁªÐ³Ö¨­Í ®°èÕ®°¯ÈÀÚ¬¢ª­¶�ÂÒÑ ·tµ»®°¯È® ±Èµ¢®î¶Á×�±È®°¯�®¹Í»Âö�¸�¨«Í¢ÔïÏ¢¯²¶�¸�× Â ½ïÍ¢¶ÁÍD� ì¹®°¯È¶í³²Àξ ¬ ¶Õª åª{�µê×»³©·´®®°Í ¸í×»Ïï·t¨­±²µÚ½ ±�ª«®¹½Õ³ð±�ù - ù / Í¢¶ÕÍ^� ì¹®°¯È¶º³²Àê¾ ¬x¶ÁªÐ³�¨­Íï±Èµ¢®�ÂöÕͻ°½ ±²®°Í ½|±²®Ó¸Ì®¹Í»Âö�¸�¨«Í¢Ô»å

ú ¼z·´®�¨«ÔÁÍ¢¶Õ¯²®t±Èµ¢®©Í¢¶ÁÍ^� ±²¯È¨«èΨн ª ¬ ®¹µ»½ èꨭ¶Õ¯ü·t¨­±²µÉ¯È®¹³²Ïx®¹Âæ±Ë±²¶ ±²µ¢®©½ ª«Ï¢µ»½ ¬x®Ã±t³²¨­ì¹®bzÕ±²µ¢®¹Í̱²µ»® ÂöÕͻ°½ ±²®¹Í»½|±È¨­¶ÕÍî¶ÁÏx®°¯[�½|±È¶Á¯üµ ½Á³ü®Ó³²³²®°ÍαȨ«½Áª­ª«À�±Èµ¢® ³È½ ¾¿®tÏ»½Á¯È½Á¾º®°±²®¹¯È³ü½Õ³¦±²µ»® ¸�¨«¯²®ÓÂæ±ÅÏ»¯²¶�¸�×»ÂñŶÁÏx®°¯Ò½|±È¶Á¯Óå � ¶|·Ë®¹èÁ®°¯ü±²µ¢®�°¶Áͻ¹½|±È®°Í»½ ±²¨«¶ÁͶÁÏx®°¯Ò½|±È¶Á¯�½Áª­ª«¶|·�³Ö±²µ»®Ì¶Á×�±È®°¯ °¶�¸�®î±²¶Ú¬x®É¶|èÕ®°¯�½ÆªÐ½ ¯ÈÔÁ®¹¯�½ ª«Ï¢µ»½ ¬x®Ã±º½ Í»¸þ·´®îµ»½ èÁ®Ì³²®°®¹Í ±²µ»½ ± ¨­± ¨«³ ®¹½Õ³�¨«®°¯Ö±È¶ÂöÕÍ»³�±²¯È×»Âæ±�Ôնζ�¸Ú°¶ê¸¢®¹³t¶|èÕ®°¯tªÐ½ ¯ÈÔÁ®�½ ª«Ï¢µ»½Á¬ ®°±È³¹åÕ{�µê×»³t±²µ¢®ºÂöÁÍ Â°½|±È®°Í»½ ±²¨«¶ÁÍï¶ÁÏx®°¯Ò½|±È¶Á¯t¨Ð³�³�±²¯È¨«Âñ²ª«Àí¬x®Ã±²±²®°¯�±²µ»½Á͸�¨«¯²®ÓÂæ±tÏ¢¯È¶�¸�×»Âæ±Ó嫬´®°ª«¶|· ·´®Ö³²µ¢¶|· ½ Íï®H¦¢½ ¾¿Ï¢ª«®Ö¶ ¼¦Í¢¶ÁÍ^� ±²¯È¨«èΨн ª�¯È®¹³²×¢ª­±È³�¨­±�ÀΨ«®°ªÐ¸¢³¹åP � !D�#N é {RQ>ä�S ;*T !�¹½!D� !�yA¹]æ �êעϢÏx¶Õ³²®t·´®�°¶Áͻ¹½|±È®°Í»½ ±²®t½ Íº¶Á×�±È®°¯ü°¶ê¸¢®Ë±Èµ»½|±ü¨Ð³ü½ÁÍ�Ô Êø÷]Â�÷²Ê áªÂWÖ � �2��®°®¹¸^��ê¶Õª­¶Õ¾º¶ÕÍ Âö�¸�® ·t¨Ç±Èµ ½ùÔ Êø÷�ª«¶ÁÔüÊø÷ � / Ö / � � ½Á¸»½ ¾î½ ¯Ò¸ÚÂö�¸�®Õå Û x ³²³²×¢¾¿®�¼�¶Õ¯�±Èµ¢¨Ð³�®?¦�½Á¾¿Ï¢ª­®�±²µ»½ ±©Ê�¨Ð³ ½ÌÏ ¶|·´®°¯ ¶ ¼� å ÝÐ{�µ¢®°Íɱ²µ¢®ÖÂöÕͻ°½ ±²®°Í ½|±²®Ó¸îÂö�¸�®Ó³Ë¨Ð³´½ ÍdÔ Ê / ÷�´ª­¶ÕÔüÊø÷ � / ÛvÊ¿á�»Ý�Ö / � Âö�¸�®Õå½� ®°Ïx®°Í»¸¢¨­Í¢Ô¿¶ÕÍ̶Á×¢¯�ÂÒµ¢¶Õ¨«Â°®�¶ ¼z¯Ò½|±È®Â ï Ê ¶Á¼¦±²µ¢®�¶Õ×�±²®¹¯ °¶ê¸¢®bzx·Ë®�Ôծñ ½î¼v½ ¾¿¨­ª«Àﶠ¼ø¬¢¨«Í»½ ¯ÈÀï°¶�¸�®¹³�¶ ¼üÂöÕÍ»³ð±Ò½ Íα�¯È®°ªÐ½|±²¨«èÁ®�¸¢¨«³�±È½ÁÍ»Âî ½ÁÍ»¸ ½ÁÍÚ¨­ÍêèÁ®¹¯È³²®Ïx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áªz¯Ò½|±È®�Ù ��U V,W �� � ål{�µ¢¨Ð³�¨Ð³�½îÍ»®°·à¯È½ÁÍ¢ÔÁ®�¶Á¼üÏ»½ ¯Ò½ ¾¿®°±²®°¯Ò³´±²µ ½|± ·´®�µ»½ èÕ®�Í¢¶ ±©³�®¹®°ÍÚ¨«ÍÚ±²µ¢®ºÂö�¸�®Ó³³²¶ ¼v½Á¯¹å¤ µ¢¨«ª­®í¨Ç±º¨«³ Ï ¶Î³²³²¨«¬¢ª­®É±²¶ ®¹¾¿Ï¢ª­¶|À ¾ ×»ªÇ±È¨­Ï¢ª«®Éª«®°èÕ®°ªÐ³�¶Á¼t°¶Áͻ¹½|±È®°Í»½ ±²¨«¶ÁÍþ±²¶~¨­¾¿Ï¢¯È¶|èÁ®¿±Èµ¢®í¸�®¹Ï ®¹Í»¸�®¹Í»ÂÃ®í¶ ¼t±²µ»®¬¢ª«¶�ÂÒÑ ª«®°Í¢ÔÁ±²µÌÊï¶ÁÍ¿±Èµ¢®�¾¿®¹³È³È½ ÔÁ®�ª«®°Í¢ÔÁ±²µ,º¾î½ Ñꨫ͢Ô�ÊÚÂ꫶ճ²®°¯Å½ÁÍ»¸îÂ꫶ճ²®°¯ü±²¶�¬x®°¨«Í¢Ô ª«¨­Í»®¹½ ¯Å¨­ÍîÊ|zηˮ�¹½ ÍîÍ¢®¹èÁ®¹¯ÔÁ®°±Å½ Í̽ճ�À꾿Ï�±²¶Á±²¨Ð°½Áª­ª«À�ÔÁ¶ê¶�¸¿Âö�¸�®�±Èµ¢¨«³Å·´½ ÀÕå ú Í�¼�¶Õ¯²¾î½Áª­ª«ÀbzÁ±²¶�ÔÁ®°±Ë½ Íî½Õ³�À꾿Ï�±²¶Á±²¨Ð°½Áª­ª«À�ÔÁ¶ê¶�¸ ¼v½ ¾¿¨«ª­À}zÕ·´®tÍ¢®°®Ó¸¬x¶ ±²µ¿±Èµ¢®�¨«Í¢Í¢®¹¯Ë°¶ê¸¢®�½ Í»¸º¶Õ×�±²®¹¯ËÂö�¸�®�±²¶�¬x®�½Á³²À꾿Ï�±²¶Á±²¨Ð°½ ª«ª«À ÔÁ¶ê¶�¸�å ú Íî·tµ»½|±Å¼�¶Áª«ª­¶|·�³°zÁ·´®�·t¨«ª­ªx¸�®¹³ÈÂïȨ­¬x®t±ð·´¶½ Ï»Ï¢¯²¶Î½ÁÂÒµ¢®Ó³Ë½ ±�ÔÁ®°±�±²¨«Í¢ÔîÂöÕÍ»³�±²¯È×»Âæ±È¨­¶ÕÍ»³�¶ ¼¦½Á³²Àξ¿Ï�±È¶ ±È¨«Â¹½ ª«ª­ÀÌÔÕ¶ê¶ê¸ïÂö�¸�®Ó³�×»³²¨­Í¢Ôî°¶Áͻ¹½|±²®¹Í»½|±È¨­¶ÕÍ�å

ü���Üt��� X��ü�R¸���£¤���t���z��Y?ZÖ£(³¦� ���L¶ ���(à�¸��{�µ¢®îØ ¯È³�±�¼v½ ¾¿¨«ª­À ¶ ¼�Âö�¸�®Ó³�·´®Ì¸�®¹³ÈÂïȨ­¬x®Ì½ ¯È®Ì¸�×¢®Ì±²¶ù�¢¶Õ¯²Í»®°À Ô �3��ÖSz¦·tµ¢¶ ¸�®Ó³²Â°¯²¨«¬x®¹¸ ±²µ»®Ì¬»½Á³²¨Ð¿¨«¸�®Ó½Æ¶ ¼�±²µ»®Âö�¸�®Ó³?z ¬¢×�±¿¸�¨Ð¸þÍ¢¶ ± ³�±²¯È®¹³È³Ö±Èµ¢®ÉÂÒµ¢¶Õ¨«Â°®î¶ ¼tÏ»½ ¯Ò½ ¾¿®°±²®°¯Ò³©±²µ ½|± ·´¶Á×¢ªÐ¸ ¶ÁÏ�±È¨­¾¿¨«ì°®î±Èµ¢®Ì±È¯È½Õ¸�®°¶¼Ù ¬x®Ã±ð·´®°®°Í�¯Ò½|±È®½ Í ¸Ì¯È®°ªÐ½|±²¨«èÁ® ¸�¨«³�±È½ÁÍ»ÂîÕåtÛv�¢¶Õ¯²Í»®°Àî·�½Á³´½|¼Ü±²®¹¯Ë¬»¨­ÔÕÔÁ®°¯ËØ ³²µiz�³�Ïx®¹Â°¨ÇØx°½ ª«ª«À¿½ÁÍí½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾¿¨«ÂtèÕ®°¯Ò³�¨«¶ÁÍɶ ¼½�êµ ½ Í¢Í¢¶ÕÍi® ³±²µ»®°¶Á¯È®°¾Æå ¤ ®º·t¨«ª«ª Ôծñ ±²¶í±²µ¢¨Ð³©·tµ¢®°Í ·Ë®ºÔÁ®°± ±È¶í½ ª«ÔÁ¶Õ¯²¨­±²µ»¾¿³¹å Ýd{�µ¢®¿½ÁÂñ²×»½Áªé¬x¶Á׻ͻ¸¢³©·Ë®¹¯²® ·Ë¶Õ¯²ÑÕ®¹¸Æ¶Õ×�±©¬êÀ[ Àν ¬¢ª«¶|èùÔÇß �0» Öé½ÁÍ»¸ï½ ¯È®©× ³�×»½Áª­ª«À̯Ȯü�®¹¯²¯È®¹¸É±²¶î½Á³´±Èµ¢® [ Àν ¬¢ª«¶|èî¬ ¶Õעͻ¸¢³¹å{�µ¢®�¨Ð¸�®Ó½©±²¶�Ôծñ˽ÖÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª�±È¨­¾¿® °¶ÁÍ»³�±²¯È×»Âñ²¨«¬¢ª­®�¼v½Á¾¿¨­ª«À ¶Á¼�½Á³²Àξ¿Ï�±È¶ ±È¨«Â¹½ ª«ª­À ÔÁ¶ê¶�¸ºÂ°¶�¸�®¹³ø¨Ð³Å½�³²¨«¾ºÏ»ª­®�¶ÕÍ¢®Áåx ³Å½ Í¿¶Á×�±È®°¯Å°¶�¸�®�·Ë®t·t¨«ª­ª ×»³²®�½���®°®¹¸^���ê¶Õª­¶Õ¾¿¶ÁÍ¿Âö�¸�®t¶|èÁ®¹¯ø½ Í¿Ê5� ½Á¯²À ½ ª«Ï¢µ»½ ¬x®Ã±\zճȽ À ½ Í�Ô Êø÷]Â�÷²ÊÖáªÂ�Ö � � Âö�¸�®Õå�¢¶Õ¯�±Èµ¢® ¨«Í¢Í¢®¹¯ °¶ê¸¢®bz�·Ë® ·t¨­ª«ª ³²®¹½Á¯ÈÂҵƼ�¶Õ¯�±Èµ¢® ¬x®¹³�±©ª«¨«Í¢®¹½Á¯ Âö�¸�® ¨­ÍLzx³È½ Àbz ¤ ¶Õì°®¹Í»Âïҽ|¼Ü±\® ³�®°Í»³²®°¾ ¬¢ª­® ¶ ¼üÂö�¸�®Ó³°å{�µ¢¨Ð³´±È½ÁÑÁ®¹³�®?¦�Ï ¶ÕÍ¢®°Íα²¨Ð½ ª�±È¨­¾¿®�¨«Íɱȵ¢®�¬¢ª«¶�ÂÒÑ̪­®¹Í¢Ô ±Èµí¶Á¼é±Èµ¢®Ö¨­Í»Í¢®°¯�°¶�¸�®bz�¬¢×¢±t±²µ¢®�¬¢ª«¶�ÂÒÑ̪«®°Í¢ÔÁ±²µï¶ ¼z±Èµ¢®�¨«Í¢Í¢®°¯Âö�¸�®Ö¶ÕÍ¢ª­ÀîÍ»®°®¹¸»³´±²¶º¬ ®�ª«¨­Í»®¹½ ¯�¨«Íɱȵ¢®Ö¾¿®¹³È³²½ÁÔÁ®�ª«®°Í»Ô ±²µÆ½ Í ¸Ì±Èµ¢®Ö¾º®Ó³²³È½ ÔÕ® ª«®°Í»Ô ±²µï¶ ¼z±²µ¢®�¨«Í¢Í¢®¹¯�°¶�¸�®Ö¨«³´¶ÁÍ»ª­Àª«¶ÁÔüÊøå|{�µê×»³ø±Èµ¢®�±È¨­¾¿® ¨Ç±ü±Ò½ ÑÕ®¹³ø±È¶�ػͻ¸î±²µ¢® ¬ ®Ó³ð±�Âö�¸�®�¨«Í ¤ ¶Áì°®¹Í»Âïҽ|¼Ü±\® ³ü®°Í»³²®°¾ ¬¢ª­®�¨«³Ë¶ÁÍ¢ª«ÀºÏ ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ª»¨­ÍÌÊø姩®Ã±²±²¨«Í¢Ôڽ節¨­±�±Èª­®¿¾¿¶Á¯È®º³²Ïx®¹Âè­Ø Âbz�±²¶ÚÂöÕÍ»³�±²¯È×»Âæ±�½ïÂö�¸�®¿¶ ¼Å¯È®°ªÐ½|±ÈèÁ®¿¸�¨Ð³ð±Ò½ Í»Â°®¿ä�zz·Ë®ºÏ¢¨ÐÂÒÑ~ä - ½ Í ¸ ä / ³²¶í±²µ»½ ±ä - ä / äêåÕ�»¶Á¯t±Èµ¢®�¶Õ×�±²®¹¯ Âö�¸�®�·´®�Ï¢¨ÐÂÒÑí½ÁÍ Ô Êø÷ÓÛðß�á�ä - Ý Êø÷Èä - Ê5Ö � ���q�W� Âö�¸�®Õån�»¶Á¯�±Èµ¢®�¨«Í¢Í¢®¹¯�Âö�¸�®�·´® ³²®¹½Á¯ÈÂÒµ

» ����õ

Page 58: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

¤ ¶Áì°®¹Í»Âïҽ|¼Ü±\® ³�®°Í»³²®°¾ ¬¢ª­®�±²¶î¶Á¬¢±È½ ¨«Í ½ Í1Ô Êi�v÷ÓÛðß�á�âãÛ ä / Ý�Ý Êi� ÷Èä / Êi�*Ö / � Âö�¸�®�·t¨­±²µãÛ�ß�á�âãÛvä / Ý�ÝðÊi� ª­¶ÕÔüÊøån{�µ»®¯È®¹³²×¢ªÇ±È¨­Í»ÔíÂö�¸�® µ»½Á³ ¬¢ª«¶�ÂÒÑ磌®°Í»Ô ±²µ Ê�Êi� è¿Û�ÊÖª­¶ÕÔüÊzÝNz�¯È®°ªÐ½|±È¨­èÕ® ¸�¨Ð³ð±Ò½ Í»Â°® ä̽ÁÍ»¸Ú¯Ò½|±È®íÛðß©áãä - ÝÃÛ�ß�áãâãÛ ä / ݲÝæå{�µê×»³�·´®�¶Á¬�±Ò½ ¨«Íɱȵ¢®Ö¼�¶Áª«ª­¶|·t¨«Í¢Ô ±²µ¢®¹¶Á¯È®°¾ �

��� {�h»y|{�� Çz�$Çý% G�IÐ<<$�<?INT äF� Û � ÷ -/ Ý�X >JCR<HI[<F< )}' K�>�Ka032 ' 2!\(2 ' >�<(EH0�� ' ;UT�G�EÕZDG�;UT32:G�� ' 0�;½> ' �ª<7P�G�2DKN>�INMRP?> ' ÌH;=<P�G°4}<NK Ä c ' >�CBI[0�>�< Ù 0�2:4�I[<H;$03> ' $�<F4 ' KN>�0325P]< ä K?03> ' K�E�T ' 2WV

Ù Þ ¾î½�¦r�]:r �_^ �� ` Û�ßtáþâãÛvä / ݲÝ�çba�ß�á ä

ä /(ced � Û » å­ß Ý

{�µ¢®�¬x¶Á×¢Í ¸ Û » å«ßÓÝ´½ ¬x¶|èÁ®©¨Ð³�±²µ¢® [ ÀÕ½ ¬»ª­¶|迬x¶Áעͻ¸�åü���Üt��± f�gOh �²�����ð�����e¸��Õ���Rà��x�¢�ð�e¸��¤ ® ±Ò½ ÑÕ® ½í¬¢¯²¨«®Ã¼´¸�¨­ÔÕ¯²®Ó³²³²¨«¶ÁÍڱȶï¸�¨Ð³ÈÂÃ×»³È³�·tµ ½|±Ö¨Ç±�¾¿®¹½ÁÍ»³ ±²¶ÆÂöÁÍ ³ð±È¯²×»Âñ©½ïÂö�¸�®º®H¦�Ï¢ª«¨«Â°¨Ç±Èª­ÀÕå ú ±�¨«³Ö°ª­®Ó½ ¯ ±²µ»½ ±±²µ»¨«³t¶Õ×¢ÔÁµÎ±�±²¶¿¬x®�½¿ÂöÁ¾¿Ï¢ª«®H¦�¨­±ðÀW� ±Èµ¢®°¶Õ¯²®°±²¨Ð ¸�®°Ø»Í¢¨­±²¨«¶ÁÍiz ³�¨«Í»Âî�½¿Âö�¸�®Ö¨Ð³�½ ػ͢¨­±²®�³²®Ã±�½ Í ¸É¶ÕÍ¢®�°½ ÍƶլÎèꨫ¶Á×»³²ª«À®°Íê×¢¾¿®¹¯È½ ±²®í½Áª­ª´Ø»Í»¨Ç±È®Æ³²®Ã±Ò³ ±²¶þ³�®¹®í¨­¼ ¶ÕÍ¢®í¶Á¼�±²µ»®°¾ ÔÕ¨­èÕ®¹³°zü³²½ À}zü½ ÍëÛvÊø÷]Â�÷ÈùÎÝ�� °¶�¸�®Áå"{�µ»®ï°¶ÁÍ»³�±²¯È×»Âæ±È¨­¶ÕÍ»³ ¶ ¼§©¨«ª­¬x®°¯²±¿±²¶ê¶ÁÑþ®H¦�Ïx¶ÁÍ¢®¹Íα²¨Ð½ ª´±²¨«¾¿®bzÅ·tµ»¨­ª«®�kü½Á¯È³²µ»½Á¾º¶|è5® ³�¨Ð³¿½~¯Ò½ Í»¸¢¶Á¾¿¨­ì¹®¹¸�Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªË±²¨«¾¿®Æ°¶ÁÍ»³�±²¯È×»Âñ²¨«¶Áͱ²µ ½|±øÏ ¶Î³²³²¨«¬¢ª­À ¯²®°±²×¢¯ÈÍ»³¦½ Í ®°¯È¯²¶ÕÍ¢®°¶Õ×»³é³²¶Áª«×�±È¨­¶ÕÍíÛܱȶ©±²µ¢®�±Ò½Á³²Ñ�¶ ¼»Ø Í»¸�¨«Í¢Ô�½ Í�Ô Êø÷]Â�÷²ùbÖ»Âö�¸�®ÓÝÃå ¤ ®t½Á³È³�®¹¯�±È®¹¸�±²µ»½ ±�¢¶Õ¯²Í»®°À5® ³´ÂöÕÍ»³�±²¯È×»Âæ±È¨­¶ÕĮ́«³�³²¶Á¾¿®°µ»¶|·¡®H¦�Ï¢ª«¨«Â°¨Ç±\z¢½ Í»¸ÉÀÁ®Ã±Ë±²µ¢¨Ð³�¨Ð³ËÍ»¶ ±t³²½ ±²¨Ð³ð¼v½ÕÂæ±²¶Õ¯²À ±²¶º¾î½ ÍêÀî¾î½|±Èµ¢®°¾î½|±È¨«Â°¨«½ÁÍ»³¹å� ®¹¯²®Æ·´®í®¹Íê×¢¾¿®°¯Ò½|±²®Æ³²¶Á¾¿®ÚÂïȨDZȮ°¯È¨«½~¼�¶Á¯¿®H¦�Ï¢ª«¨ÐÂ譱ÁÍ»³�±²¯È×»Âñ²¨«¶ÁÍ»³ ¼�¶Á¯¿±Èµ¢®Ú°½Õ³�®ï¶ ¼ÖÂö�¸�®¹³ÚÛ�±²µ¢¶Õ×¢ÔÁµ ³²¨­¾¿¨«ª«½Á¯ÂïȨ­±²®°¯È¨Ð½ ½ÁϢϢª«À̱²¶î°¶ÁÍ»³�±²¯È×»Âæ±È¨­¶ÕÍ»³�¶ ¼¦½ ª«ªzÂöվ ¬¢¨«Í»½ ±²¶Á¯È¨Ð½ ªx¶Á¬^áð®ÓÂæ±È³ÒÝæåç�®°± ÿ Ä f 3 r � o f 3 rts ¬ ®Ì½Ú°¶Áª«ª­®ÓÂæ±²¨«¶ÁÍ ¶ ¼Ë¼v½ ¾¿¨«ª­¨«®¹³�¶Á¼�°¶�¸�®¹³°z�·tµ¢®¹¯²®º±²µ»®¿¼v½ ¾¿¨­ª«À Ä f 3 r µ»½Õ³Ö¯È½ ±²®îÙ ½ÁÍ»¸~¯È®°ªÐ½|±È¨­èÕ®¸�¨Ð³ð±Ò½ Í»Â°®�äêå«{�µ¢®Ö¼�¶Áª«ª­¶|·t¨«Í¢Ôî½ ¯È®©Ï ¶Î³²³²¨­¬»ª­®ÖÍ¢¶Á±²¨«¶ÁÍ»³�¶Á¼éÄ~¬x®°¨«Í¢Ôî®?¦êÏ»ª­¨ÐÂè­±²ª«Àí°¶ÁÍ»³�±²¯È×»Âæ±È¨­¬»ª­® �

gqh é � �Ósv�ã{ �»¶Á¯�®°èÕ®°¯ÈÀ ��+ Ù + ß̽ Í ¸ ��+ ä + ßbz�±Èµ¢®°¯È®î®H¦�¨Ð³ð±Ò³�½ÆÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áªjiã³²×»ÂÒµ ±²µ»½ ±�ÔÁ®°Í»®°¯Ò½|±²¶Õ¯¾¿½ ±²¯È¨*¦þ¶ ¼t±Èµ¢®�å ±Èµã®°ª«®°¾¿®¹ÍÕ±¿¶ ¼t±Èµ¢®Ì¼v½Á¾¿¨­ª«À Ä f 3 r zø·t¨Ç±Èµ ¬¢ª«¶�ÂÒÑ ª«®°Í»Ô ±²µ Ê æ zø¨Ð³ °¶ÁÍ»³�±²¯È×»Âñ²¨«¬¢ª­®í¨­Í ±²¨«¾¿®iéÛ�Ê æ ÝNz¢¨­¼ø³�×»Âҵƽº¼v½ ¾¿¨«ª­ÀÉ®H¦�¨«³�±È³¹åkà�és�jSh y3��N(h é � �Ósv�ã{ {�µ¢®°¯È®î®H¦�¨Ð³ð±Ò³�½ÆÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª1iã³�× ÂÒµ ±Èµ»½|±�¼�¶Õ¯�®°èÕ®°¯ÈÀ ��+ Ù + ßî½ Í»¸ ��+ ä + ßbzÔÁ®°Í»®°¯Ò½|±²¶Õ¯�¾î½|±È¯²¨=¦ï¶Á¼ü±²µ»®aå ±²µ ®°ª«®°¾¿®°Íα ¶Á¼ø±²µ¢® ¼v½ ¾¿¨«ª­ÀïÄ f 3 r z�·t¨­±²µ ¬¢ª­¶�ÂÒÑ節®¹Í¢Ô ±Èµ~Ê æ zx¨Ð³©ÂöÁÍ ³ð±È¯²×»Âñ²¨«¬¢ª«®¨­Íí±²¨«¾¿®liéÛvÊ æ ÝNz»¨Ç¼ø³�× Âҵコ¼v½Á¾º¨«ª«ÀÌ®H¦�¨Ð³ð±Ò³°å{�µ¢®�¸�¨KÙx®¹¯²®¹Í»Âî�¬x®Ã±ð·´®°®¹ÍïÏx¶Áª«ÀᲨ«¾¿® ÂöÕÍ»³ð±È¯²× Âæ±²¨«¬¢¨«ª­¨­±ðÀí½ÁÍ»¸ïע͢¨­¼�¶Á¯È¾ Ïx¶Áª«ÀᲨ«¾º® ÂöÁÍ ³ð±È¯²×»Âñ²¨«¬¢¨«ª­¨­±ðÀɨгt¯È®°ª=�½|±²¨«èÁ®¹ª­Àí³�¾î½ ª«ª åe{�µ¢¨Ð³�¸�¨Ð³ð±È¨­Í Âæ±²¨«¶ÁÍÚ¹½ ÍƬ ® ¾¿½Õ¸�®�¨«Íí±Èµ¢®�¯È®°¾î½ ¨«Í¢¨«Í¢Ôî¸�®ÃØ Í¢¨Ç±È¨­¶ÕÍ»³t±È¶ê¶Rz¢¬¢×¢±�·Ë®�·t¨«ª«ªz³�Ñꨫϱ²µ¢®�®?¦ê±²¯Ò½�¯Î×»½ ÍᲨ­Ø»®¹¯È³°zÕ½ÁÍ»¸î³�¨«¾¿Ï¢ª«À ¼�¶�ÂÃ× ³Å¶ÕÍî·tµ»½|±Å¾î½ÁÑÁ®¹³Å½�Âö�¸�®tÄÚÂöÕÍ»³�±²¯È×»Âæ±È¨­¬¢ª«® Ûvª­®Ó½ èΨ«Í¢Ô�¨­±ü±È¶�±²µ»®¯²®Ó½Á¸�®¹¯Ë±È¶ºØ»Í»¸Æ½ºÏ¢¯²®°¼�®°¯È®°Í»Â°®Ö·t¨Ç±Èµ¢¨­ÍÚ׻͢¨Ç¼�¶Õ¯²¾ ½ Í»¸íÍ¢¶ÁÍêעͻ¨Ç¼�¶Õ¯²¾ ±²¨«¾º®�¬x¶Á׻ͻ¸¢³ÒÝæå

�(hxuPO<NY! Z { {�µ¢®�ÔÁ®¹Í¢®°¯Ò½|±È¶Á¯¦¾î½|±È¯²¨=¦ ¶Á¼x±Èµ¢®lå ±²µî¾¿®¹¾ ¬x®°¯Å¶Á¼�Äí¨Ð³ÅÂöÕÍ»³�±²¯È×»Âæ±È¨­¬¢ª«®t¨«Í¶ÕÔÕ½ ¯È¨­±²µ¢¾¿¨ÐÂt³�Ï»½ÕÂîÕå´Û�{�µ¢¨«³¨­¾¿Ï¢ª«¨­®Ó³´±²µ»½ ±tÄ~¨Ð³tÏ ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª�±²¨«¾º®�°¶ÁÍ»³�±²¯È×»Âñ²¨«¬¢ª­®Õå Ý�(h Z ! é�é � g�h é � �¹s��ã{ è hP�RO<�¹y w Z �Ósnm é { - � ®°¯È®�·´®�·t¨«ª­ªx¯È®°¯Î×¢¨«¯²®t±Èµ»½|±�½ ³²Ï ®ÓÂè­Ø Â�®¹Íα²¯ÈÀbzê³²½ À ±²µ¢® V ÷|_ܱȵ̮°Íαȯ²À}z¶ ¼�±Èµ¢® ÔÕ®°Í¢®¹¯È½ ±²¶Õ¯Å¾î½|±È¯²¨=¦Ì¶ ¼�±Èµ¢®£å ±Èµí¾¿®¹¾ ¬x®°¯�¶ ¼�±Èµ¢®ÖÂö�¸�® Ä ¬ ®ÖÂöվºÏ»×�±È½Á¬¢ª­®©¨«ÍɱȨ­¾¿®©Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ª�¨«Í

±²µ¢®Ö³�¨«ì°®©¶ ¼z±²µ¢®Ö¬¢¨«Í»½ ¯ÈÀî¯È®°Ï¢¯È®¹³²®°ÍαȽ ±²¨«¶ÁÍî¶Á¼·åÒ÷ V ÷|_�å´Û�Ï�¶Á±²®©±²µ¢¨Ð³´¯²®¹Ï¢¯È®¹³²®°ÍαȽ ±²¨«¶ÁÍ̵»½Õ³�³�¨«ì°®©ª­¶ÕÔÕ½Á¯²¨­±²µ¢¾¿¨ÐÂ�¨«ÍÊ ½ Í ¸í³²¶º±²µ¢¨Ð³tÍ¢¶Á±²¨«¶ÁÍƨ«³�¾ ×»Âҵᄎ¶Õ¯²®Ö®?¦êÏ»ª­¨ÐÂè­±t±²µ»½ÁÍÆ®¹½ ¯Èª«¨­®¹¯´Í»¶ ±²¨«¶ÁÍ ³°å Ý

�(h Z ! é�é � �eh uPOÇN½! Z { è h��ROÇ�°y|w Z �¹s$m é { {�µ¢® V ÷`_ܱȵ ®¹Íα²¯ÈÀ�¶ ¼ ±²µ¢®�ÔÕ®°Í¢®¹¯È½ ±²¶Á¯Æ¾î½|±È¯²¨=¦ ¶Á¼ ±²µ»®1å ±Èµ Âö�¸�®þ¨«³ª­¶ÕÔÕ³²Ï»½Á°® ÂöÕÍ»³�±²¯È×»Âæ±È¨­¬¢ª«®�¨«Íí±Èµ¢®�ª«®°Í¢ÔÁ±²µï¶ ¼ ±²µ¢®�¬¢¨«Í»½Á¯²À̯Ȯ°Ï»¯²®Ó³�®¹ÍÕ±Ò½|±È¨­¶ÕÍ»³Å¶Á¼½åÒ÷ V ½ Í»¸à_ðå

cpoR��p9ªnuBxkx q<�0pDfnhkj�onsBpDhks4o�lns<mzjRonsBp�fAue��m>u�oAuB��m�uBonl�q?fAuBl�pDsQ�4meonme�9u`p9m>s4oim]s4o�pDfnm�riq � d?fAuBots<j�p9slo�onoAuOu7qÇjDq<uBonjvsBuzq<uwKs4�gjDªn�4�4mejDpDhkon�>pDfnhkj?oAuB��m �

» �����

Page 59: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

x ³�Í¢¶ ±È®¹¸Øzê±Èµ¢®�¯²®\¯Î×¢¨­¯È®°¾¿®¹ÍÕ±Ò³�ÔÁ®°±�¾¿¶Õ¯²®�³�±²¯È¨­Í¢ÔÕ®°Íα�½Á³�·´®ÖÔÁ¶î¸�¶|·tÍí±²µ¢®�ª«¨«³�±�½ ¬x¶|èÁ®Õå½{�µ»®�Í¢¶ ±È¨­¶ÕÍí¶Á¼¦çz¶ê¹½ ª«ª­Àç�¶ÕÔÕ³²Ï»½Á°®�U˶ÁÍ ³ð±È¯²×»Âñ²¨«¬¢ª«® ¨Ð³�½ ¬x¶Á×�±t½Á³�³�±²¯È¶ÁÍ¢Ô ½ ¯È®°¯Î×¢¨«¯²®¹¾º®¹Íα˷´®©Â¹½ ÍÉÏx¶Õ³²®�·t¨­±²µ»¶Á×�±tÔÁ®°±�±È¨­Í¢Ôº¨«ÍÎèÕ¶Áª«èÁ®Ó¸î·t¨Ç±Èµ¾î½ÁÂÒµ¢¨«Í¢®?� ¸�®¹Ï ®¹Í»¸�®¹ÍÕ±tÏ¢¯È¶Á¬»ª­®¹¾¿³¹å�Û ¤ µ ½|±�¶ÁÏx®°¯Ò½|±È¨­¶ÕÍ»³�½ ¯È®�½ ª«ª­¶|·´®¹¸�� ¤ µêÀ��ƮñÒ å Ý�¢¶Õ¯²Í»®°À5® ³¦Â°¶ê¸¢®¹³°zÁ½Á³ø¸�®Ó³²Â°¯²¨«¬x®¹¸ ½Á¬ ¶|èÕ®bz ½Á¯²®�Ïx¶Áª«ÀձȨ­¾¿®tÂöÕÍ»³�±²¯È×»Âæ±È¨­¬¢ª«®bzÁ¬¢×�±üÍ¢¶Á±¦×»Í¢¨Ç¼�¶Õ¯²¾ Ï ¶Õª­ÀᲨ«¾¿®�¶Á¯øª«¶ÁÔÕ³²Ï»½ÕÂîÂöÕÍ»³�±²¯È×»Âæ±È¨­¬¢ª«®Áå�{�µ¢®�Í¢®?¦Î± ¼v½ ¾¿¨«ª­Àƶ ¼Å°¶�¸�®¹³�·Ë®�·t¨«ª«ª ¸�®Ó³²Â°¯²¨«¬x® ½ ¯È®�ª«¶ê¹½ ª«ª­À磌¶ÁÔÕ³²Ï»½ÕÂî�ÂöÕÍ»³�±²¯È×»Âæ±È¨­¬¢ª«®bzx¾î½ Ñꨫ͢Ա²µ»®°¾ ½Õ³�®H¦�Ï¢ª«¨«Â°¨Ç±�½Õ³�·Ë®�°¶Á×¢ªÐ¸Æ¸�®¹³²¨­¯È®¿Ûv¸�®°Ø»Í¢®�� ÝÃåü���Üt��Ü wÕà��Õ���z�Î�L¸yx �����z�{�µ¢®�Ï»¯²¨«Í»Âè«Ï»½Áª¢¬»½ ¯È¯È¨­®¹¯ ·´®�³²®°®°¾ ±²¶Ö¼v½ÕÂît¨«ÍîÏ¢¯È¶ê¸¢×»Âè«Í¢Ô�Âö�¸�®Ó³ø®H¦�Ï¢ª«¨ÐÂè­±²ª«À ¨Ð³¦±²µ ½|±Å·´®tÑêÍ¢¶|· µ¢¶|· ±²¶ ÂöÁÍ ³ð±È¯²×»Âñ³²¾¿½Áª­ª«®°¯Ì½ÁÍ»¸ ³�¾î½Áª­ª«®°¯î®¹Í»³�®¹¾ ¬¢ª«®¹³Ì¶ ¼ÖÔÁ¶ê¶�¸ °¶ê¸¢®¹³°z´¬»×�±Ì·Ë® ¸¢¶ÁÍi® ±ÌÑêÍ¢¶|· µ»¶|·�±²¶�Ôծñ̶Õ×¢¯îµ»½ Í ¸¢³î¶ÁÍ¡½ÁÍÎÀÏ»½Á¯�±È¨«Â°×¢ª«½Á¯�ÔÁ¶ê¶�¸Æ¶ÁÍ»®Áå ú ÍÚ¼v½ÁÂñ�¨«ÍÚ±²µ¢® ®°Í»³²®°¾ ¬¢ª­®Ó³�·´® ÂöÕÍ»³�±²¯È×»Âæ± ½Áª­¾¿¶Î³ð±�½Áª­ª Âö�¸�®¹³ ½ ¯È®�ÔÁ¶ê¶�¸�å ú ³t±Èµ¢®°¯È® ½ÁÍÎÀ·�½ À ±È¶ × ³�® ±²µ¢¨Ð³´¼v½ÁÂñ�� Ê ×»³�±²®Ó³�®¹Íi® ³Ë¨Ð¸�®¹½�Ô � » Ö�¨Ð³´½ ¬¢¯È¨­ª«ª«¨«½ÁÍÕ±�¶ÁÍ»®Oz ¶ÁÍ»®�±Èµ»½|±*)²¸�®¹¯È½ÁÍ»¸�¶Õ¾º¨«ì°®¹¯È³,+�³²µ¢¶Á×»ª«¸Ì±È½ Ñծ͢¶Á±²®©¶ ¼ � ¢ Í̱ȵ¢®Ö¶ÁÍ¢®©µ»½ Í ¸Ì·´®©Â¹½ ÍÉÏ»¯²¶�¸�׻°®©½º³²¾¿½Áª­ª�³È½ ¾¿Ï¢ª«®©³²Ï»½ÕÂî�¶Á¼z¾¿¶Õ³�±²ª«ÀîÔÁ¶ê¶�¸É°¶ê¸¢®¹³¹å«¢ Íɱ²µ¢®Ö¶Á±²µ¢®¹¯µ»½ÁÍ»¸Æ·Ë® Í¢®°®Ó¸Æ¶ÁÍ¢®�ÔÕ¶ê¶ê¸Ú°¶�¸�®�±²µ ½|±�·´®�·t¨Ð³�µÆ±È¶Ì×»³²® ¯È®°Ïx®¹½|±È®¹¸�ª«Àez Ê - ±È¨­¾¿®¹³�¨­Í ±²µ¢® °¶Áͻ¹½|±È®°Í»½ ±²¨«¶ÁÍ�å�� ¶·´®�¯²®Ó½ ª«ª­ÀïÍ¢®¹®¹¸Æ±È¶É×»³²®�±²µ»® ³È½ ¾¿® °¶ê¸¢®�Ê - ±È¨­¾¿®¹³�� ��¶É±²µ¢®¹ÀƽÁª­ªéµ»½ èÁ®�±²¶Ì¬x® Ôնζ�¸��"{�µ¢® ½ÁÍ»³²·Ë®¹¯°z»±²¶É¬x¶ ±Èµ¯Î×¢®¹³�±²¨«¶ÁÍ ³?zΨ«³ÕÏ9¢�� x Í»¸í³²¶Rzê³²×¢¯²Ï»¯²¨Ð³�¨«Í¢ÔÕª­Àº®°Í¢¶Õ×¢ÔÁµLzÁ±Èµ¢® ®¹Í»³²®°¾ ¬»ª­®©¶ ¼z°¶ê¸¢®¹³Ë¨«³´®H¦¢½ÕÂæ±²ª«À¿·tµ»½|±�³�×�;î°®¹³Ë¼�¶Á¯Ë±²µ»®ÂöÕÍ»³�±²¯È×»Âæ±È¨­¶ÕÍ�å��êÏx®¹Â°¨ÇØ Â¹½ ª«ª­À}zz·´®¿±È½ÁÑÁ®î½ ÍäÔ Ê - ÷] - ÷²ù - Ö�, Ü � � ¶Õ×�±²®¹¯�Âö�¸�®î·t¨­±²µþ®°Í»Â°¶�¸�¨­Í»ÔƼ�עͻÂæ±È¨­¶ÕÍ : - ½ Í ¸ ½ÁÍ®°Í ³�®¹¾ ¬¢ª«® ÂöÕÍ»³²¨«³�±²¨«Í¢Ô¼øÊ - ¨«Í¢Í¢®¹¯ °¶ê¸¢®¹³�·t¨­±²µ ±²µ¢®�å ±ÈµÚ¾º®¹¾ ¬x®°¯©¸�®°Í¢¶Á±²®Ó¸ : o æ s/ å ¤ ® ®°Í»Â°¶ê¸¢® ½î¾¿®¹³È³²½ÁÔÁ® �¬êÀ�Ø»¯Ò³�±Å½ Ï¢Ï¢ª«ÀꨭͻÔÖ±²µ¢®t¶Õ×�±²®¹¯ü®°Í»Â°¶�¸�¨­Í»ÔÖ¼�עͻÂæ±È¨­¶ÕÍ¿±²¶�Ôծñ : - Û � ݦ½ÁÍ»¸ ±²µ¢®¹Í̽ Ï¢Ï¢ª«Àê¨­Í»Ô ±Èµ¢®lå ±²µ¿¨«Í¢Í¢®¹¯ü®°Í»Â°¶�¸�¨­Í»Ô¼�עͻÂñ²¨«¶ÁÍ ±²¶�±Èµ¢®nå ±Èµ °¶Î¶Õ¯È¸¢¨­Í»½ ±²®ü¶Á¼ : - Û � ÝHzÓÔծñ²±²¨«Í¢Ô�±Èµ¢®´èÁ®¹Âñ²¶Õ¯ ( : o - s/ Û²Û : - Û � Ý�Ý - Ýæ÷ �?�?� ÷ : o � � s/ Û�Û : - Û � Ý²Ý � � Ý * å{�µ¢®�½Á¬ ¶|èÕ®Ö¸¢®Ãػ͢¨­±²¨«¶ÁÍÚ¹½ ÍƬ ®Ö¼�¶Õ¯²¾î½Áª­¨«ì°®Ó¸É±È¶îÔÁ®°±t½¿Í»¶ ±²¨«¶ÁÍƶÁ¼¦Â°¶Áͻ¹½|±²®¹Í»½|±È¨­Í»Ô¿½ÁÍ�Ô Ê - ÷] - ÷�{�Ör, Ü � � ¶Á×�±È®°¯�°¶ê¸¢®·t¨­±²µ�½ Í ®°Í»³²®°¾ ¬¢ª«®ÌÂöÁÍαҽ ¨«Í¢¨­Í»ÔíÊ - Ô Ê / ÷� / ÷�{�Ö , � ¨«Í¢Í¢®°¯�°¶�¸�®¹³îÛ|{í¯²®¹Ï¢¯²®Ó³�®¹ÍᲨ«Í¢Ôɱȵ¢®¿¼v½ÁÂñ�±²µ»½ ±�±²µ¢®Ì¸¢¨«³�±È½ÁÍ»Âîӳ½ ¯È®�׻͢ÑêÍ¢¶|·tÍizζÁ¯´Ï ¶Î³²³²¨­¬»ª­À¿Í¢¶Á±�½Áª­ª ±²µ¢®Ö³È½ ¾¿®ÓÝÃåY� ®°Í»¶ ±²¨«Í¢Ô ±²µ¢®©¶Á×¢±²®°¯�Âö�¸�® ¬êÀ,� - z�½ Í»¸Ì±²µ¢®©¨­Í»Í¢®°¯´®°Í»³²®°¾ ¬¢ª«®¬êÀ � / zé·´®î®H¦ê±²®¹Í»¸ ±²µ»®ÌÍ¢¶ ±Ò½|±È¨­¶ÕÍ ¼�¶Õ¯ ÂöÕͻ°½ ±²®¹Í»½|±È¨­¶ÕÍþ½ÁÍ»¸ ×»³²®�� - ; � / ±È¶~¸�®¹Í¢¶ ±È®Ì³�×»ÂÒµ�°¶Áͻ¹½|±²®¹Í»½|±È¨­¶ÕÍ»³¹å{�µ¢®¿¼�¶Õª­ª«¶|·t¨­Í»ÔïÏ»¯²¶ÕÏ ¶Î³�¨­±²¨«¶ÁÍþ³�µ»¶|·�³Öµ¢¶|· ±Èµ¢®îÏ»½Á¯È½Á¾º®°±²®¹¯È³Ö¶Á¼Ë±Èµ¢®ÌÂöÕͻ°½ ±²®°Í ½|±²®Ó¸ °¶�¸�®¹³�¯È®°ªÐ½|±È®º±²¶Æ±²µ»¶Õ³²®î¶ ¼±²µ»®�¶Á×�±È®°¯�Âö�¸�®�½ÁÍ»¸ï¨­Í¢Í»®°¯t®°Í ³�®¹¾ ¬¢ª«®Áå

gÖy3h+Neh�OÓs��ÓsvhP�ËÇz��ê&È <H> � -dÌ�<�0�2 Ô Ê - ÷] - ÷Èù - Ör, Ü � P�G\4b<\@ È <?> � / Ì�<�032Ë<?2DK?<?�FÌ?;=<�G�E Ê - Ô Ê / ÷] / ÷�{�Ö , /tP�G°4}<NKG�E�c·C ' P�C 0�;J;ÕÌ?M^>e6i/UE�I[0}PH> ' G32 CD00$�<�� ' 2 ' �7M^� 4 ' KN>�0�2:P�< ù / @ A5CD<?2 >�CD<BP�G325P]0�>�<?2:0�>�<�4�P]G\4b< � - ; � / ' K�0�2Ô Ê - Ê / ÷� -  / ÷¹Û ù - á 6 Ê - Ý�ù / Ö , P�G°4}<°@gÖy3hih:j {�µ¢®�Ï»¯²¶ê¶ ¼¦¼�¶Õª­ª«¶|·�³t¼�¯È¶Á¾ ±²µ¢® ¼v½ÁÂñ�±²µ ½|±�±Èµ¢®�Ø ¯È³�±�ª«®°èÁ®¹ªz®¹Í»Âö�¸�¨«Í¢ÔɶÁ¼ü½ÌÍ¢¶ÕÍ^� ì¹®°¯È¶¿¾º®Ó³²³È½ ÔÕ®�ª«®¹½ èÁ®Ó³½|± ª­®Ó½Á³�± ù - Âöê¶Á¯Ò¸�¨«Í»½|±È®¹³Ö±Èµ»½|± ½Á¯²®îÍ»¶ÁÍ^� ì°®¹¯²¶ å x ±º¾º¶Î³ð± 6 Ê - ¶Á¼t±²µ¢®É¨­Í¢Í»®°¯ °¶�¸�®¹³ ¸�¶ÚÍ¢¶ ± µ»½ èÁ®î¾¿¨«Í¢¨­¾ ×¢¾¸�¨Ð³ð±Ò½ Í»Â°®�ù / å«{�µÎ× ³t½|±tª­®Ó½Á³�±�ù - á 6 Ê - °¶Î¶Õ¯È¸¢¨­Í»½ ±²®Ó³?zê·tµ¢®¹Íí®¹Í»Âö�¸�®Ó¸É¬êÀ � / ¯È®¹³²×¢ªÇ±t¨«Íïù / Í¢¶ÕÍ^� ì¹®°¯È¶ ì¹Àê¾ ¬x¶ÁªÐ³®¹½ÕÂÒµ�å|{�µ¢®�¸�¨Ð³ð±Ò½ Í»Â°®©¼�¶Áª«ª­¶|·�³¹å

Ï�¶Á±²®Ö±Èµ»½|±�¨­±�¨«³�Í¢¶ ±�®¹ÍձȨ­¯È®°ª«Àî±È¯²¨«èꨫ½Áª�±²¶ºØ»Í»¸Ú½ÁÍí®¹Í»³²®°¾ ¬»ª­®�·t¨­±²µ7áð×»³�±�±²µ»®�¯²¨«ÔÁµÎ±tÏ»½ ¯Ò½ ¾¿®°±²®°¯Ò³ � {é¶î×»³²®Ö®°èÁ®¹¯²À®°ª«®°¾¿®¹Íձ˶ ¼x±²µ¢®�®¹Í»³²®°¾ ¬»ª­®�½ ±üª­®Ó½Á³�±ü¶Áͻ°®bzÁ·´®tÍ¢®¹®¹¸ ±²µ¢®�¨­Í¢Í»®°¯ü®¹Í»³�®¹¾ ¬¢ª«®�³²¨­ì¹®�±²¶�¬x®�Í¢¶�ªÐ½ ¯ÈÔÁ®¹¯é±Èµ»½ Í¿±Èµ¢®�¶Õ×�±²®¹¯¬¢ª«¶�ÂÒÑɪ«®°Í¢ÔÁ±²µ�å�{é¶î×»³�® ½ Í��q�Æ°¶ê¸¢®�½|±�±Èµ¢®�¶Á×¢±²®°¯ ª­®¹èÁ®¹ª�z¢·´®�Í¢®¹®¹¸ï±Èµ¢®�¶Á×¢±²®°¯�¬¢ª­¶�ÂÒÑ節®¹Í¢Ô ±Èµï±²¶Ì¬x®�Í¢¶ÌªÐ½ ¯ÈÔÁ®¹¯±²µ ½ Íڱȵ¢® ¶Õ×�±²®¹¯ ½Áª­Ï¢µ ½ ¬x®Ã±�³�¨«ì°®Õå�{é¶Ì×»³²® ÂöÕͻ°½ ±²®¹Í»½|±È¨­¶ÕÍiz ·´® Í»®°®¹¸Ú±²µ¢®ºÍê×¢¾ ¬x®°¯©¶ ¼ü¶Õ×�±²®¹¯ ½ ª«Ï¢µ»½Á¬ ®°±©³²¨­ì¹®�±È¶¬x®�Í¢¶ ª«½Á¯²ÔÕ®°¯ø±Èµ»½ Íî±Èµ¢®�Íê×¢¾ ¬ ®¹¯Å¶Á¼�¨­Í¢Í»®°¯�Âö�¸�®°·´¶Á¯Ò¸¢³¹å· Å×�±�±È¨­Í¢Ô ¨Ç±�½ ª«ª»±È¶ÁÔծñ²µ»®°¯\zÁ·´®�Í¢®¹®¹¸Ì½ÁÍî®°Í»³²®°¾ ¬¢ª­® ·t¨Ç±ÈµÍ¢¶º¾¿¶Á¯È®�¾¿®°¾ ¬ ®¹¯È³Ë±²µ ½ Íí°¶�¸�®°·´¶Á¯Ò¸¢³üÏx®°¯�¾¿®°¾ ¬ ®¹¯�¶ ¼�±Èµ¢® ®¹Í»³²®°¾ ¬»ª­®ÕåY�»¶Á¯²±²×¢Í ½|±²®¹ª­À͢¶Á×»ÔÁµizα²µ»¨«³´¨Ð³Ë®?¦¢½ÁÂæ±Èª­À·tµ»½ ±ü¨«³ü½ÕÂÒµ¢¨«®°èÁ®Ó¸�¬êÀ ¤ ¶Áì¹®°Í»Â°¯È½ ¼Ü±°® ³¦®°Í»³²®°¾ ¬¢ª«®bzÁ³²¶�·Ë®t¹½ Íº×»³�®t¨­±¹å�U˶ÕÍ»³�®\¯Î×¢®°Í¢ÍαȪ­À�·´®�ÔÁ®°±ü¶ÁÍ¢®´¼�×¢ª«ª­Àº®H¦�Ï¢ª«¨ÐÂè­±Û�ª«¶�°½Áª­ª«À ª«¶ÁÔγ�Ï ½ÁÂî�°¶ÁÍ»³�±²¯È×»Âñ²¨«¬¢ª­® ݦ¼v½Á¾º¨«ª«Àº¶Á¼�®°¯È¯²¶Õ¯t� Âöկ²¯È®¹Âñ²¨«Í¢Ô©Â°¶�¸�®¹³Å¶ÁÍ¿±²µ»® [ Àν ¬¢ª«¶|è�¬x¶Á×¢Í ¸�å ú ÍîÏ»½ ¯²±²¨ÐÂÃ×»ª«½Á¯±²µ»®�Âö�¸�®Ö¨«³�½Á³²Àξ¿Ï�±È¶ ±È¨«Â¹½ ª«ª­ÀîÔնζ�¸�å

» ����Í

Page 60: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

��� {�h»y|{�� Çz�! ý% G�Iq<�$3<?INT �7+ ä + â ~i- Û -/ ÝNX >�CD<?I[<�< )}' KN>vKl0�;$G°P�03;J;*T�;=G]V3KSZR0bP�<9P]G�2DKN>SINMRPH> ' ÌH;$< ' 2�\«2 ' >�<iEH0�� ' ;*TG�EÐP]G\4b<HK Ä >�CD0�>|CR0�K�I[<?;=0�> ' $3<Ð4 ' KN>�0�2:P�< ä 0�2:4,I[03>�< -/*} ßtá rp E � o �� s�~ @{�µ¢®ïÂö�¸�®Æ½ ¬x¶|èÁ®Ì¨Ð³ ¶Õ¬�±È½Á¨­Í»®¹¸�¬êÀ�ÂöÕͻ°½ ±²®°Í ½|±²¨«Í¢Ô~½¨�t®°®Ó¸����ê¶Áª«¶Á¾¿¶ÁÍã°¶�¸�®É¶Á¼ ½ Ï¢Ï»¯²¶ÕÏ¢¯²¨Ð½|±È®î¯È½ ±²®í·t¨Ç±Èµã±²µ»®¤ ¶Áì°®¹Í»Âïҽ|¼Ü±�®¹Í»³�®¹¾ ¬¢ª«®Áå ¤ ®îÍ¢¶ ±È®º±²µ»½ ±�±²¶ÆÔÁ®°±Öª«¶�°½Áªøª­¶ÕÔÕ³²Ï»½Á°®ºÂ°¶ÁÍ»³�±²¯È×»Âæ±È¨­¬»¨­ª«¨Ç±ðÀ}zz·´®¿Í¢®°®Ó¸ ±Èµ¢®î¨­Í»Í¢®°¯�°¶ê¸¢®ª«®°Í¢ÔÁ±²µ¿±²¶ ¬ ®��>ç ¡ Y ¼�¶Á¯Å³²¶Á¾¿®�¨«Íα²®¹ÔÁ®°¯\_�³²¶Ö±²µ»½ ±Ë·´®�°½ÁÍî×»³�®�±²µ¢® ®H¦�Ï¢ª«¨«Â°¨Ç±�ÂöÁÍ ³ð±È¯²×»Âñ²¨«¶ÁÍ¿¶ ¼�Ø ®°ªÐ¸¢³ü¶Á¼�³²¨«ì°® � ç ¡ Y å

» � »b�

Page 61: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

« ¬®­°¯²±�³S´ �

Ç��� �=5ê·¶ é u:h y sG� � �ãs Zv¸ �¤�°y3h?¹ w Z �¹s�h��º�\h è hg¹ésD�éu ��� {�h»y � ¢©Âñ²¶Õ¬ ®¹¯�ßbz ���}� ß½b¾R¿�À�Á�Â+¾��

È <�P?>�M^I]<HI<Ä�Åù0}4°C^MÆ1îMR4}032 15P?I ' Ì�<ÇÄO��4b0��W1:� ' >�C

{é¶ê¸»½ Àº·´®b® ª«ªx¸�®Ó³²Â°¯²¨«¬x® ½�Í»®°· ¼v½ ¾¿¨«ª­Àî¶Á¼zÂö�¸�®Ó³?z�°½Áª­ª«®¹¸É½ ª«ÔÁ®°¬»¯È½Á¨«ÂH� ÔÕ®°¶Á¾¿®°±²¯ÈÀ Âö�¸�®Ó³°åY{�µ¢®¹³²®ÖÂö�¸�®¹³ËÔÁ®¹Í¢®°¯Ò½ ª«¨«ì°®�t®¹®¹¸����ê¶Áª«¶Á¾¿¶ÕÍ Âö�¸�®Ó³ø½ Í»¸ Àꨭ®¹ª«¸¿³²×¢¯²Ï»¯²¨Ð³�¨«Í¢ÔÕª­ÀÖÔÁ¶ê¶�¸ °¶�¸�®¹³¦¶|èÕ®°¯¦ÂöÁÍ ³ð±Ò½ Íαü³�¨«ì°®Ó¸ ½Áª­Ï¢µ ½ ¬x®Ã±È³¹å ¤ ®b® ª«ª¢¾¿¶ ±²¨«è|½|±È®±²µ»®©Â°¶ê¸¢®¹³Å¼�¯²¶Õ¾ ±ð·´¶ Ïx¶Á¨«Íαȳ˶ ¼zèꨫ®°·�å|� ¨­¯Ò³�±Ë·´®b® ª­ª�³²µ¢¶|· µ¢¶|· ±²µ¢®¹ÀÌÂÒµ»½ ª«ª«®°Í¢ÔÕ®t±²µ¢®�)²Â°¶ÁÍ3áð®ÓÂæ±È×¢¯²®Ó¸ÌÂöÕÍêèÁ®°¯Ò³²®t¶ ¼±²µ»® §©¨­ª«¬ ®¹¯�±[�Skü½Á¯È³²µ»½Á¾º¶|èî¬x¶Á׻ͻ¸�+¢å ¤ ®b® ª­ªz±²µ¢®¹Íƾº¶Á±²¨«è|½|±²®©±Èµ¢®�Âö�¸�®Ó³�¼�¯²¶Õ¾ ±²µ»®�½ ª«ÔÁ®°¬»¯È½Á¨«Â Ï ®¹¯È³²Ïx®¹Âæ±È¨­èÕ®Áå{�µ¢® ¯²®Ó½Á¸�®¹¯�¨«³�·´½Á¯²Í»®¹¸ï±²µ ½|±�±Èµ¢¨Ð³�ª«®¹Âñ²×¢¯È®�¨Ð³�Í¢¶Á± ³²®°ª­¼J� °¶ÁÍαȽÁ¨­Í¢®Ó¸�å ú ±Ö¸�®¹³ÈÂïȨ­¬x®¹³�±²µ¢®K)�Í»½ ±²×¢¯È®!+¿¶Á¼¦±²µ¢®¿Âö�¸�®Ó³·t¨­±²µ¢¶Õ×�±�³�µ»¶|·t¨­Í¢Ôºµ¢¶|· ±²¶ÌÂöÕÍ»³�±²¯È×»Âæ±�±²µ»®°¾Bz¢¶Á¯t·tµêÀî±Èµ¢®°Àí®°èÕ®°Íï®H¦�¨«³�±¹å

� ñÇÍ � ��Ò|ø4����ÒYø<�Ðö ÍÐû��ôõ�ÒgÒYø°ö�øù÷Êõ�ÒgÒ½õQÑ��.��Ñ¥��� õ>Ò½õQÑ¥ÔÄ s é mÅ{Îyn��Q5��!�yAO � !R� h��4�7h wR��¹RO ú ÍƶÁ¯Ò¸�®¹¯�±²¶î¾¿¶ ±È¨­è|½|±È®�±²µ»®�ÂöÁÍ ³ð±È¯²×»Âñ²¨«¶ÁÍƶ ¼ x § Âö�¸�®¹³°z¢·´®ÖØ»¯Ò³ð±�¯È®¹Â¹½ ª«ª±²µ»®É§©¨­ª«¬ ®¹¯�±[�Skü½Á¯È³²µ»½Á¾º¶|è�Û §£k©ÝÖ¬x¶Á×¢Í ¸~¼�¶Õ¯ " � ½Á¯²À °¶ê¸¢®¹³¹å¿çz®Ã±�±Èµ¢®Ì¸�®ÃØ Í¢®º±²µ¢® " � ½ ¯ÈÀÚ®°Íα²¯È¶ÁÏêÀƼ�×¢Í Âæ±²¨«¶ÁÍ ±È¶¬x® �

â , Û�ixÝ i�ª«¶ÁÔ , " á ßi a Û�ß�á�ixÝꪫ¶ÁÔ , ßßtá�i

{�µ¢® " � ½Á¯²À¿®¹Íձȯ²¶ÕÏêÀ ¼�׻ͻÂæ±È¨­¶ÕÍí³²®°¯ÈèÁ®¹³´½Á³´½ Íï½ Í»½Áª­¶ÕÔÁ×¢®�±²¶ ±²µ¢®Ö¬¢¨«Í»½ ¯ÈÀ¿®°Íα²¯È¶ÁÏêÀº¼�עͻÂñ²¨«¶ÁÍï·tµ¢®°Íí·Ë®Ö¸�®Ó½ ª�·t¨Ç±Èµ� ½Á¾¿¾º¨«Í¢Ô�¸�¨Ð³ð±Ò½ Í»Â°®�¶|èÁ®°¯ " � ½ ¯ÈÀ�½ ª«Ï¢µ»½ ¬x®Ã±Ò³°å ú ͺϻ½ ¯²±²¨ÐÂÃ×¢ªÐ½ ¯\z|·´®ËÔծñü½Ö³�¨«¾¿¨­ªÐ½ ¯¦èÁ¶Õª­×»¾º®t½ÁϢϢ¯È¶�¦ê¨«¾î½|±È¨­¶ÕÍ�±²¶©±²µ»®¬¢¨«Í»½ ¯ÈÀÆ°½Á³²®Áå�çz®Ã±�� , ÛSÑ�÷50 Ýt¬x®�±²µ»® ¬»½Áª­ª ¶ ¼ø¯Ò½Á¸�¨«×»³�¯©½ ¬x¶Á×�±9Ñ ¨«Í�Å � , ål�»×¢¯�±Èµ¢®°¯\zxª­®°±�kø¶Áª , Û$0|÷�ÊzÝ � � , Û�Ñz÷�0 Ý?�¬x®Ö±²µ¢®�èÕ¶Áª«×¢¾¿®©¶Á¼é±Èµ¢¨Ð³�¬»½ ª«ª å«�»¶Á¯�ØD¦�®Ó¸ �7+ i + ß}z¢·Ë®Öµ»½ èÕ®

kø¶Áª , Û�i»Êø÷�ÊzÝ«§ " � p%�?o��?s �Û��ê±²¯È¨«Âñ²ª«Àbz¦±²µ»®ï½ÁϢϢ¯È¶�¦ê¨«¾î½|±È¨­¶ÕÍ ¨Ð³ ¯²®Ó½ ª«ª­À ¶ÁÍ¢ª«À�½ ÍêÀ ÔÁ¶ê¶�¸þ·tµ¢®°Í ·Ë®}® ¯È®ÉÂöÕÍ»³²¨«¸�®¹¯²¨«Í¢ÔƱȵ¢®íª«¶ÁÔν ¯È¨Ç±Èµ¢¾ ¶ ¼t±²µ»®èÁ¶Õª­×»¾º®}z�¨ å ®Áå��R�A_ , Û�i»Êø÷�ÊzÝ " � p � o��?s�o -N~�� o - svs å ݧ©¨«èÁ®°Í ±²µ»¨«³ÖÍ¢¶Á±È½ ±²¨«¶ÁÍiz�·´®î°½ Í ³ð±Ò½|±È® ±Èµ¢® " � ½Á¯²À~§£k ¬x¶Á×¢Í ¸ � {�µ¢®°¯È® ®?¦�¨«³�±È³�½ÁÍ ¨«Í�ػ͢¨­±²®º¼v½Á¾º¨«ª«À ¶ ¼�Âö�¸�®¹³ Ä·t¨­±²µÆ¯È½ ±²®�Ù ½ÁÍ»¸ï¯²®¹ª«½ ±²¨«èÁ®Ö¸�¨«³�±È½ÁÍ»Âî�ä ³²½ ±²¨Ð³ð¼�Àê¨«Í¢Ô �

Ù Þ ßtá â , Ûvä Ý �

õ\� » ß

Page 62: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ÛvÏ�¶ ±È®Ö±²µ»½ ±t±²µ¢®�¯Ò½ Í»¸¢¶Á¾ ª«¨­Í¢®Ó½ ¯�°¶ê¸¢®�·t¨­ª«ªz½ ªÐ³²¶º½ ±�±È½Á¨­Íí±²µ»¨«³t¬x¶Á׻ͻ¸ï·t¨Ç±Èµïµ»¨­ÔÕµïÏ»¯²¶Õ¬»½ ¬¢¨«ª«¨Ç±ðÀÕå Ýú ÍƶÁ¯Ò¸�®°¯´±È¶ºÔծñ�½º¬x®Ã±�±È®°¯t¼�®¹®°ª«¨­Í»Ô¿¼�¶Á¯�±²µ ½|±�¬x¶Áעͻ¸iz¢·Ë®Ö·t¨«ª­ª�ØD¦íä�z»½ÁÍ»¸ïª­®°± " ±²®¹Í»¸í±²¶�Ú�å ¤ ®�Ôծñ

â , Û ä Ý äzª«¶ÁÔ , Û " á ßÓÝ a ߪ­¶ÕÔ "

â / Û ä Ý ä a â / Ûvä Ýª­¶ÕÔ "

a è¿Û ß" ª­¶ÕÔ "

Ý

a × ³�¨«Í¢Ô¿±²µ»®Ö¼v½ÁÂæ±�±Èµ»½|± ª«¶ÁÔxÛ " á ß Ýª­¶ÕÔ "

ßtá ª«¶ÁÔ " á ª«¶ÁÔ�Û " á ßÓݪ­¶ÕÔ "

§ ßtá ß ï Û " ª«¶ÁÔ " Ý c§ ä a è¿Û ß

ª«¶ÁÔ "Ý

{�µ¢¨Ð³t¾¿®¹½ÁÍ»³´±²µ»½ ±t¼�¶Á¯�ØD¦�®Ó¸íä�z¢¯Ò½ Í ¸�¶Á¾ °¶�¸�®¹³�·t¨«ª­ªz¾º¶Õ¯²®©¶Á¯tª«®¹³È³t½ÁÂÒµ»¨­®¹èÁ®Ù ßtá ä©á#è¿Ûðß ï ª­¶ÕÔ " Ý �

ÛvÏ�¶ ±È® � x ª«ª�ª«¶ÁÔν ¯È¨Ç±Èµ¢¾î³´½Á¯²®Ö¬»½Õ³�® � ע͢ª«®¹³È³tÍ¢¶Á±²®Ó¸É¶Á±²µ¢®¹¯²·t¨Ð³�® ÝæåÏ�¶Á±²®Ö±Èµ»½|±t±Èµ¢®a�ꨫ͢ÔÁª«®Ã±È¶ÁÍï¬ ¶Õעͻ¸Æ³�µ»¶|·�³Å±Èµ»½|±�Í»¶ÌÂö�¸�®�°½ÁÍï½ÕÂÒµ¢¨­®¹èÁ®�Ù 8 ßtá äêå«{�µ»®�½ ¬x¶|èÁ®©¬ ¶Õעͻ¸Æ³�µ»¶|·�³±²µ ½|±�¯Ò½ Í»¸�¶Õ¾ Û�ª«¨­Í»®¹½ ¯æÝ´Âö�¸�®Ó³t½ Ï¢Ï¢¯È¶Õ½ÕÂҵµ»®a�ꨭͻÔÁª«®Ã±²¶ÕÍí¬x¶Á׻ͻ¸ï·t¨Ç±Èµï½ÁÍí¨«ÍêèÁ®°¯Ò³²® ª«¶ÁÔν ¯È¨Ç±Èµ¢¾¿¨«Â©¸�®ÃØxÂè­±�¨­Íï±²µ»®½ ª«Ï¢µ»½Á¬ ®°±©³²¨­ì¹®Áå ú ³t±²µ»¨«³ ±²µ»® ¬x®¹³�±©¸�®°Ø Âè­±©·´® ¹½ Í µ¢¶ÕÏ ® ¼�¶Á¯_� ¤ ® ¯È®¹Â¹½ ª«ªé½¿¼v½Á¾¿¨­ª«¨«½Á¯�¼v½Á¾¿¨­ª«ÀÆ·tµ¢¨«ÂÒµ ³�®¹®°¾î³t±È¶¸�¶¿¬x®Ã±�±È®°¯Óå

äÉ{ê{ô¹bQ_SLh é hî� hP� è h?¹ {ôO ��®¹Â°½Áª­ª´±Èµ»½|± �t®°®Ó¸����ê¶Áª«¶Á¾¿¶ÁÍ Âö�¸�®¹³ ¾¿®Ã±º±²µ¢®��ꨫ͢ÔÁª«®Ã±È¶ÁÍ ¬ ¶Õעͻ¸ã®?¦¢½ÁÂæ±Èª­À�½ÁÍ»¸¸�¨Ð¸í³²¶º·t¨Ç±Èµï½ÁÍï½Áª­Ï¢µ ½ ¬x®Ã±t³�¨«ì°®Ö¶ ¼é®H¦¢½ÁÂñ²ª«ÀîÊ Ûܼ�¶Õ¯�¨­Í�Ø Í¢¨Ç±È®°ª«ÀɾÍêÀÌÂÒµ¢¶Õ¨«Â°®¹³Ë¶ ¼ ÊzÝæå(�궧�t®°®Ó¸����ê¶Áª«¶Á¾¿¶ÁÍïÂö�¸�®Ó³³²®°®°¾ ±È¶ Ïx®°¯²¼�¶Á¯È¾ ¾ ×»Âҵ̬x®Ã±²±²®°¯\z�½ ª­±²µ¢¶Õ×¢ÔÁµÉ¨­Íî±Èµ¢¨Ð³´Â¹½Á³²®�¶ÁÍ»® °½Á͢͢¶Á±Ë¯È®¹½ ª«ª«À ±Ò½ ª«Ñ¿½Á¬ ¶Õ×�± " ½ÁÍ»¸îÊ ³²®°Ï»½Á¯È½ ±²®¹ª­ÀÕå¤ ¨­±²µ#�q� Âö�¸�®¹³°z�·´®º¾ ×»³�±©µ»½ èÕ® " Þ Ê|z�½ÁÍ»¸ ³�¶ " ¾ ×»³ð±�Ôնɱȶ�Ú ·t¨­±²µþÊøåÐÏ�¶ÁÍ¢®°±²µ¢®¹ª­®Ó³²³°z�·´®ºÑêÍ¢¶|· ±²µ»½ ±Ù ß�á~ä�á¨è¿Û�ß ï ÊzÝü¼�¶Õ¯��q�É°¶�¸�®¹³ÖÛܼ�¶Õ¯�½ ÍêÀ " Þ ÊzÝNz ½ Í»¸í³�¶º·Ë®�¹½ ÍÉ·�½ èÁ® ¶Á×¢¯�µ»½ÁÍ»¸¢³�½ Í ¸í°ª«½Á¨­¾ ±Èµ»½|±t·´®ÔÁ®°±

Ù ßtáþä á'è¿Û�ß ï " Ý ��ê¶Æ¨«Í ®<Ùx®ÓÂæ±�±Èµ¢®Ì¸�¨KÙx®¹¯²®¹Í»Âx®Ã±ð·´®°®°Í ß©á äï½ Í»¸ Ù ¨Ð³�ÔÁ¯È¶|·t¨­Í»Ôɨ«ÍÎèÕ®°¯Ò³�®¹ª­ÀÚ¨«Í " zz¯Ò½|±Èµ¢®°¯©±²µ ½ Íþ¨­ÍêèÕ®°¯Ò³�®¹ª­ÀÚ¨«Í±²µ»® ª«¶ÁÔν ¯È¨Ç±Èµ¢¾ ¶ ¼ " å«{�µ¢¨Ð³´¾¿¶ ±²¨«è|½|±È®¹³Å±²µ¢®�¯Î×¢®¹³�±²¨«¶ÁÍ,�¦Â¹½ Íí·Ë®Ö³�¶Õ¾¿®°µ¢¶|· ±²×»¯²Íɱ²µ¢®��t®¹®¹¸����ê¶Áª«¶Á¾¿¶ÕĮ́­ÍαÈ×¢¨Ç±È¨­¶Õͨ«Íձȶî½�¼�¶Õ¯²¾î½ ª�Ï»¯²¶ê¶ ¼é·tµ¢®°¯È®Ö·Ë®Ö½ÁÂñ²×»½Áª­ª«ÀÌÔÁ®°±�±²¶ºØD¦ " ½ Í»¸íª­®°±tÊ~ÔÁ¶ ±²¶¿¨«Í�ػ͢¨­±ðÀí½ÁÍ»¸É³²®°®©±Èµ¢®�¬ ®¹µ»½ èꨭ¶Õ¯Ë¶Á¼ Ùè�³°åüäêå x ª­ÔÕ®°¬¢¯Ò½ ¨ÐÂN� ÔÁ®¹¶Á¾¿®Ã±È¯²ÀÆÛ x §�Ý�Âö�¸�®¹³´±È×¢¯ÈÍï¶Õ×�±�±²¶Ì¸�¶¿®?¦�½ÕÂæ±Èª­Àî±Èµ¢¨Ð³°å

¶ Ä Z h?¹é{ôO {�µ»®Ö°¶ÁÍ»³�±²¯È×»Âñ²¨«¶ÁÍ»³�¶Á¼ x § Âö�¸�®¹³�¨«Íï¼v½ÁÂñ�ÀΨ«®°ªÐ¸Ù ß�áþä á ß� " á ß ßtáþä�á#è¿Ûðß ï � " ÝÃ÷

¼�¶Á¯t®¹èÁ®¹¯²ÀèÁ®°ÍïÏ¢¯È¨­¾¿®�Ïx¶|·Ë®¹¯ " Ûv¨ å ®Áå$z " ¾ ×»³�±�®°¯Î×»½Áª�i���¼�¶Á¯tÏ¢¯È¨«¾º®�i ½ÁÍ»¸É®¹èÁ®¹Íí¨«Íα²®°ÔÕ®°¯��¹ÝÃå«{�µ¢®¹³²®�Âö�¸�®¹³t¸¢¶Í¢¶Á± ¯È®°¯Î×¢¨«¯²®�±Èµ»½|± " ³²Â¹½ ª«®�·t¨Ç±Èµ~Êþ¨ å ®Õå�¨«Í ¶Á×¢¯�)²½ÁÍ»½ ª«À�³�¨Ð³5+¿·´®�¾î½ ÀíØD¦ äî½ Í»¸ " z�½ Í ¸Úª­®°± Ê�Ù Ú��x±²µ¢®¹Í ·´®Â°½ÁÍ̪«®Ã± " ¨­Í ÂïȮ¹½Á³²® ½ÁÍ»¸Ì³²®°®©µ¢¶|· ±²µ»® Ï»½Á¯È½Á¾¿®Ã±²®¹¯È³Ë³²Â¹½ ª«®�·t¨­±²µ " å ¤ µ»¨­ª«®�±Èµ¢®�Âö�¸�®Ó³Ë¸�¶ Í¢¶ ±t½ÁÂÒµ»¨­®¹èÁ®�½º¸�®ÃØxÂè­±¶ ¼Å½ÁÍ ¨«ÍÎèÕ®°¯Ò³�® ¨­Í " zx±Èµ¢®°ÀÚ¸�¶íÔÁ®Ã±Ö½ÌÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªé¸¢®¹Â°½ Àï¨«Í ±²µ»¨«³©¸�®ÃØxÂè­±Ö½Õ³�½î¼�׻ͻÂæ±È¨­¶ÕÍ ¶ ¼ " å��ê¶É¨­± ¬x®¹Â°¶Á¾¿®¹³Âê«®¹½Á¯�±²µ»½ ± ½Á³ " ÔÕ¯²¶|·�³Ë±²µ»¨«³�¼v½ ¾¿¨­ª«ÀɶÁ¼¦Â°¶�¸�®¹³t·t¨«ª«ª�¶Á×�±ÈÏ ®¹¯�¼�¶Õ¯²¾ ±²µ¢®º§©¨­ª«¬ ®¹¯�±[�Skü½Á¯È³²µ»½Á¾º¶|èî¬x¶Á׻ͻ¸�ån��¨­Í»Â°®�±²µ»®¸�®°Ø Â譱ż�×¢Í Âæ±²¨«¶ÁÍ ³Ë½Á¯²®l¯Î×¢¨­±²® ®H¦�Ï¢ª«¨«Â°¨Ç±\zΨ­±Ë¨Ð³üÏx¶Õ³È³²¨­¬¢ª«®t±È¶ Âöվ¿Ï»½ ¯È®�±²µ¢®¹¾ ®H¦¢½ÁÂñ²ª«Àº½ÁÍ»¸¿Í¢¶ ±È®�±Èµ»½|±Ë±²µ¢®�¼�עͻÂæ±È¨­¶ÕÍä a ß ï Û � " á ß Ý�¨«³ ³�¾î½Áª­ª«®°¯t±Èµ»½ Í â , Ûvä Ý�¼�¶Õ¯�ä -/ ½ Í»¸ " Þ�§��}�»åÕ{�µ¢® ³²¾¿½Áª­ª«®¹³�± ³]¯Î×»½ ¯È®�ª«½Á¯²ÔÕ®°¯�±Èµ»½ ÍƱȵ¢¨«³Íê×¢¾ ¬x®°¯�¨Ð³(�WÍ ½ÁÍ»¸É³²¶ ·´®�Ôծñ´±²µ»½ ±Ë¼�¶Õ¯ " Þ �WÍ�±Èµ¢®©½Áª­ÔÕ®°¬¢¯Ò½ ¨ÐÂN� ÔÁ®¹¶Á¾¿®Ã±È¯²À Âö�¸�®¹³Ë¶Á×¢±²Ïx®°¯²¼�¶Á¯È¾ ¯È½ÁÍ»¸�¶Á¾ Âö�¸�®Ó³��

õ\� »}�

Page 63: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� ñ4ö � ��Ò|ø4����ÒYø<�Ðö)öªû��ôõ�öBõ@Ñ¥���?ø<Ïlø?ö�ø���Ñ|õ���ø<�Ðÿ�Ô�.°�7ö�Ô?Ò�Ñ«ÿ��\ÒYø��7ö�Ô

�t®Ó°½ ª«ªx±²µ»½ ±´¨«ÍÉÏ»¯²®¹èΨ«¶Á× ³Ë°ª«½Õ³²³²®¹³Ë·Ë® ÔÁ¶Á±�°¶ê¸¢®°·´¶Á¯Ò¸¢³ü¬êÀ¿±È½ÁÑê¨­Í¢Ô ¾ ×¢ª­±²¨«è|½ ¯È¨«½ ±²®©Ï ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª«³´½ Í»¸É®°è|½ ª«×»½ ±²¨«Í¢Ô±²µ»®°¾ ½|±Ö½ ª«ª¦Ï ¶Õ¨­Íαȳ ¨«ÍùÅ�  , ÛG�q�~Âö�¸�®Ó³�·´®°¯È®�±²µ»® עͻ¨­è|½ ¯È¨Ð½|±²®ºÂ°½Õ³�® Xô ß Ýæå�U˶ÁÍ»³²¨«¸¢®°¯ ±²µ¢® ע͢¨«è ½Á¯²¨Ð½|±È® ½ÁÍ»¸¬¢¨«è|½ ¯È¨«½ ±²®�°½Õ³�®Ó³Ë·t¨­±²µÚ¸�®¹ÔÁ¯È®°®�� �

¡ Í¢¨­è|½Á¯²¨Ð½|±È®Ö¹½Á³²® � ó ¨«®°ªÐ¸¢³�Ô " / ÷�� / ÷ " / á�� / Ö , � � Âö�¸�® �¬´¨­è|½Á¯²¨Ð½|±È®Ö¹½Á³²® � ó ¨«®°ªÐ¸¢³�Ô " / ÷�� / ÷¹Û " á��¹Ý / Ö , � Âö�¸�® �{�µê×»³°zկȮ¹¸�× Âè«Í¢ÔÖ±²µ¢®©½ ª«Ï¢µ»½Á¬ ®°±Ë³�¨«ì°®�¼�¯²¶Õ¾ " / ±È¶ " Âöγð±Å× ³Å½�¯È®¹¸�× Âæ±²¨«¶ÁÍͿ±²µ»®�¸�¨Ð³ð±Ò½ Í»Â°®�¶ ¼ � �ÁÛ " á��¹ÝÃå ¤ µ»®°¯È®¸�¶ê®¹³´±Èµ¢¨Ð³�¸�¨KÙx®¹¯²®¹Í»Âî�Âöվ¿® ¼�¯È¶Á¾�� ú Íα²×»¨Ç±È¨­èÕ®°ª«Àbz�±Èµ¢¨«³�¨Ð³t¬x®¹Â¹½ ×»³²® ¨«Íï±²µ¢®�¬»¨­è|½ ¯È¨Ð½|±²®©Ï¢ªÐ½ Í¢®£Å , Ã,Å , z�±Èµ¢®°¯È®�½ ¯È®¾î½ ÍêÀí³²¾î½ ª«ªé³²×¢¬»³²Ï»½Á°®¹³´±Èµ»½|±�®¹Í»Âö�¸�®Ð¯Õ×»¨Ç±È®�¨­Í»®�;ÌÂè«®°ÍᲪ«ÀÁå��»¶Á¯�®?¦�½Á¾¿Ï¢ª­®}z»¨­¼ø·Ë®Ö±Ò½ ÑÁ®�½ÁÍêÀí½3¦�¨Ð³�� Ï»½Á¯È½Áª­ª«®°ª�ª«¨­Í»®¨«Í̱²µ»® Ï¢ªÐ½ Í»®Áå%¢ÖÍ¢¶|·t¨«Í¢Ô�±²µ ½|±t½ Âö�¸�®¹·Ë¶Õ¯È¸¿¨Ð³ � ¶ÕÍe� a ß ¶ ¼�±Èµ¢®�Ïx¶Á¨«Íαȳ´¾¿®¹½ÁÍ»³Å¨­±�¾ ×»³�±´¬x® � ½|±�½ ª«ª " Ï ¶Õ¨­Íαȳ¶ÁÍ̱²µ¢® ª­¨«Í¢®ÁåRóü®°±Å±²µ»¨«³�Âö�¸�®�¾¿½ À¿³�±²¨«ª­ªx¬ ®©Í¢¶ÕÍ^� ì¹®°¯È¶�®°ªÐ³�®¹·tµ¢®°¯È®ÁåY{�µê×»³ø±Èµ¢®¹³²® " ì¹®°¯È¶ê®¹³ü¶Á¼�±²µ¢®©Âö�¸�®¹·Ë¶Õ¯È¸º¶ÁÍ»ª­Àª«®¹½Á¸É±²¶*� a ß©ª«¨«Í¢®¹½Á¯�ÂöÁÍ ³ð±È¯È½Á¨­Íαȳ´¶ÕÍɱȵ¢®�Âö�¸�®¹·Ë¶Õ¯È¸,�Ž¿¸�®ÃØ Â°¨Ç±�¯È¶Á×»ÔÁµ¢ª«À¼ " á�� åx Í»¶ ±²µ»®°¯Ö®H¦¢½ ¾¿Ï¢ª«® ¶Á¼Ë³²×»ÂÒµ ½ï³�×»¬»³�Ï ½ÁÂî ¨«³ ±Èµ¢®ºÂ°¨­¯ÒÂê«®�: / a Þ / C ¼�¶Á¯�³�¶Õ¾¿® ÂöÕÍ»³�±È½ Íα C åТ Í¢®¿Â°½ Í Ï¢¯È¶|èÁ®±²µ ½|±t¨Ç¼ ±²µ»®©Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª�¨Ð³ � ¶ÕÍ � ��¶ ¼é±²µ¢®ÖÏx¶Á¨«Íαȳ°zê±²µ¢®¹Í鶴±t¾ ×»³�± � ®°èÁ®¹¯²Àê·tµ¢®¹¯²® ¶ÁÍɱ²µ»½ ±�Â諯Ȱª­®�z ±Èµ¢¨«³�°¶Á×¢ªÐ¸¬x®�×¢Ïï±²¶ � " Ï ¶Õ¨­Íαҳ?z¢¸�®¹Ï ®¹Í»¸�¨«Í¢Ôî¶ÁÍ C ½ Í»¸ï¶ÕÍɱȵ¢®ÖØ»®°ªÐ¸Æ³�¨«ì°®Õå��� {£m¦svu�sD¹é{�!�æ ¢ Í¢®�¨Ð¸�®¹½º¼�¶Õ¯�¨«¾ºÏ»¯²¶|èꨫ͢Ժ±²µ¢®�Ïx®°¯²¼�¶Á¯È¾î½ Í»Â°®©¶Á¼¦±²µ¢®�¬¢¨«è|½ ¯È¨«½ ±²®�°¶ê¸¢®�¨«³�±È¶¿Ø»Í»¸Ú½ KNMRÌHKH<?> ¶ ¼Ïx¶Á¨«ÍÕ±Ò³z¨«Í�±Èµ¢®´Ï¢ª«½ÁÍ¢®ü±È¶�×»³²®Ë½Õ³z®¹è|½ ª«×»½|±È¨­¶ÕÍ�Ï ¶Õ¨­Íαҳ°å ú ¼¢±²µ¢®�³²×¢¬»³²®Ã±é¨Ð³¦ÂÒµ¢¶Õ³²®°Í�¹½ ¯È®Ã¼�×¢ª«ª«ÀbzÓ±²µ¢®¹Í ·´®Å¾¿¨«ÔÁµÎ± ¬x®Ë½Á¬¢ª«®¯È®Ã±È½Á¨­Íɱ²µ¢®�¸�¨Ð³�±È½ Í Âî©Ï¢¯²¶ÕÏ ®¹¯�±È¨­®Ó³Å¶Á¼é¬¢¨«è|½ ¯È¨«½ ±²® Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ªÐ³°zηtµ»¨­ª«®ÖÍ¢¶ ±�Ï¢¨ÐÂÒÑΨ«Í¢Ô ±²¶ê¶º¾¿½ÁÍêÀîÏ ¶Õ¨­Íαȳ˼�¯È¶Á¾�½ÁÍÎÀ¶ÁÍ»® ¸�¨«¾º®¹Í»³²¨­¶ÕÍ»½ ªz°ע¯ÈèÁ®Áå � ¶|· ¸�¶ê®Ó³t¶ÁÍ¢® ÔÁ¶Ì½ ¯È¶Á׻ͻ¸í±²¯ÈÀΨ«Í¢Ô¿±È¶ÌÏ¢¨ÐÂÒÑï³²×¢¬»³²®Ã±Ò³�·t¨­±²µ ³²¾¿½Áª­ªé¨­ÍαȮ°¯Ò³�®ÓÂæ±²¨«¶ÁÍÚ½ÁÍÎÀ¶ÁÍ»®H� ¸�¨­¾¿®¹Í»³�¨«¶ÁÍ ½ ªêÂÃ×¢¯ÈèÁ®t� ú ±¦±²×»¯²Í»³¦¶Õ×�±¦Ï¢¨«ÂÒÑ�½©¸�¨KÙx®¹¯²®¹Íαø°ע¯ÈèÁ®´¨«³¦½ ÔÁ¶ê¶�¸�·�½ À ±È¶Ö¾º¨«Í¢¨«¾¿¨­ì¹®Ë±Èµ¢®�¨­ÍαȮ°¯Ò³�®ÓÂæ±²¨«¶ÁÍzåU˶ÁÍ Âî°ÍαȯȽ ±²¨«Í¢ÔÖ¶ÁÍ̽ ª«ÔÁ®¹¬¢¯Ò½ ¨Ð´°ע¯ÈèÁ®¹³�Ûv½ ªÐ³²¶�ÑÎÍ»¶|·tÍ¿½Õ³")�è|½Á¯²¨«®Ã±È¨­®Ó³5+ÎÝ ÀΨ«®°ªÐ¸¢³¦±Èµ¢®�¬ ½Á³²¨«Â�¨Ð¸�®¹½©¼�¶Õ¯ x § Âö�¸�®Ó³°å«¢�¼ÂöÕ×¢¯Ò³�®}z�¶Áͻ°®�¶ÁÍ¢®�³�±È½Á¯�±Ò³�Ï¢ª«½ Àꨫ͢Ôî½ ¯È¶Á×¢Í ¸í·t¨­±²µï±Èµ¢®�¨Ð¸�®¹½Rz¢¶ÁÍ¢®�³�±È½Á¯�±Ò³�ÔÁ¶Õ¨­Í¢Ôº±È¶Ì½ ¯È¬¢¨Ç±È¯È½Á¯²¨«ª«ÀÌÏ ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª«³�¨«Í¾î½ ÍêÀîè|½ ¯È¨«½Á¬¢ª«®¹³°zê½ÁÍ»¸íÏ¢¨«ÂÒÑ�³�ÂÃ×»¯²èÕ®¹³´¶ ¼ ª­¶|· ¸¢¨­¾¿®°Í ³�¨«¶ÁÍ鶴Íí±²µ»¨«³�µ¢¨«ÔÁµÆ¸�¨«¾¿®°Í»³²¨­¶ÕÍ»½ ª�³²Ï»½Á°®�±È¶¿®°è|½ ª«×»½|±È®�±Èµ¢®°¾Æå¤ ®b® ª­ª�Ôծñt±È¶ ±Èµ¢®�ÂöÕÍ»³�±²¯È×»Âæ±È¨­¶ÕÍ»³�¬¢¯È¨­®�¤»Àbz�¬¢×¢±tØ»¯È³�±t·Ë®�ÔÕ¨­èÕ®©³²¶Á¾¿®Öµ¢¨Ð³ð±È¶Á¯ÈÀ̬x®°µ¢¨«Í»¸í±²µ¢®Ó³�®�°¶ÁÍ»³�±²¯È×»Âñ²¨«¶ÁÍ»³¹å� ñ�- ¥ø<Ô?Ò��Ðѧ¦ �� ò�� ����÷�õ@Ô

ñ x § Âö�¸�®Ó³ ·´®°¯È® °¶Áͻ°®°¨«èÁ®Ó¸ ¬êÀ�k å � åz§©¶ÕϢϻ½Rz�½v�t× ³²³²¨«½ÁÍ Â°¶ê¸¢¨­Í¢Ôí±²µ»®°¶Á¯È¨Ð³ð±Ö½ ¯È¶Áעͻ¸ ß°Íôõ���å ¤ µ¢®¹Í µ»®Ï¢×¢¬¢ª«¨«³²µ¢®Ó¸îµ¢¨Ð³üØ»¯Ò³�±ÅÏ»½ Ïx®°¯Ë¶ÁÍî±Èµ¢¨Ð³ü±È¶ÁÏ¢¨ÐÂaÔ �»ßNÖ�zΨDZ´·´½Õ³üÍ¢¶Á±´Âê«®¹½Á¯ø±²µ ½|±´±²µ¢® ¯²®Ó³�×¢ª­±²¨«Í¢Ô °¶�¸�®¹³Å·Ë¶Õ×¢ª«¸¿ª«®¹½Õ¸±²¶ÚÍ¢®¹· ½Õ³�À꾿Ï�±²¶Á±²¨Ð¿¯²®Ó³�×»ªÇ±Ò³�z ¨«Í�Ï»½ ¯²±²¨ÐÂÃ×»ª«½Á¯°z�±Èµ¢®ÌÍ¢®ÓÂîӳ²³È½ ¯ÈÀ~½ ª«ÔÁ®¹¬¢¯Ò½íµ ½Á¸ Í¢¶ ±�¬x®°®¹Íã³ð±È×»¸�¨«®¹¸þÀծñ¹å� ¨Ð³�Ï»½ Ïx®°¯t¾¿¶ ±È¨­è|½ ±²®¹¸í±Èµ¢®�³ð±È×»¸�ÀɶÁ¼z±Èµ¢®�½Á³È³�¶�°¨«½ ±²®¹¸í½ ª«ÔÁ®¹¬¢¯È½Á¨«Â£¯Î×¢®¹³�±²¨«¶ÁÍ ³´½ÁÍ»¸í®°èÁ®¹Íα²×»½Áª­ª«À̪«®¹¸É±²¶¿±²µ»®¬¢¯²®Ó½ Ñα²µ»¯²¶Õ×¢ÔÁµÌ¯È®¹³²×¢ª­±È³¹å

ñ {�µ¢®üØ»¯Ò³�±é¼v½Á¾º¨«ª«À�¶ ¼ x §¡Â°¶ê¸¢®¹³é¾º®¹®Ã±È¨­Í¢Ô ±²µ»®Ë¬x¶Á×¢Í ¸ Ù Þ ß»á�ä�á -¨ , ~i- ·´®°¯È®Ë¸¢¨«³ÈÂö|èÕ®°¯È®¹¸©¬êÀ�{t³ð¼v½Õ³�¾î½ ÍLzk�ªÐ½Á¸�×�±Ò³�½ÁÍ»¸ [ ¨«Í¢ÑÛÔ­ßÁß°��Ö ål{�µ¢®¹¯²®�׻ͻ¸�®°¯Èª«ÀΨ«Í¢ÔɽÁª­ÔÕ®°¬¢¯Ò½º·´½Õ³l¯Î×¢¨­±²® ¨«ÍêèÁ¶Õª­èÕ®¹¸Øz»½ÁÍ»¸ï±²µ»® ÂöÕÍ»³ð±È¯²× Âæ±²¨«¶ÁÍ ³·Ë®¹¯²® èÁ®°¯ÈÀîÂöվºÏ»ª­¨Ð°½ ±²®¹¸�åY­~½ Í¢¨«Íí½ÁÍ»¸�k ª«½Õ¸�×�±È³9Ôkõ¼õ°Ö�Ï»×�±�³²¶Á¾¿®©®�Ù�¶Á¯²±´¨«ÍᲶ¿³�µ»¶|·t¨­Í¢Ô ±²µ»½ ±Ë±Èµ¢®¹³²®�Âö�¸�®Ó³·Ë®¹¯²®Ö½ÁÂñ²×»½Áª­ª«ÀÌÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª�±²¨«¾¿®�ÂöÁÍ ³ð±È¯²×»Âñ²¨«¬¢ª«®¿Ûv·t¨Ç±Èµ ½ ÍÆè¿Û�Êj© E Ý�°¶ÁÍ»³�±²¯È×»Âñ²¨«¶ÁÍí±²¨«¾º®ª� ÝÃå

ñãú Í ½Ì³�®\¯Î×¢®°Í»Â°®�¶ ¼ü·´¶Á¯ÈÑ�³�§Ö½ ¯ÒÂÃ¨Ð½î½ Í ¸ù�ᲨÐÂҵα²®°Í»¶ ±²µ Ô ¡W� z ¡}¡ Ö¦³²¨«¾ºÏ»ª­¨­Ø»®¹¸ ¬ ¶Á±²µÚ±Èµ¢® °¶ÁÍ»³�±²¯È×»Âæ±È¨­¶ÕÍ»³�½ÁÍ»¸±²µ¢®�Ï»¯²¶ê¶ ¼v³Ë³�¨«ÔÁÍ»¨ÇØ Â¹½ ÍᲪ«ÀÁåY{�µ¢® ¯²®Ó³�×¢ª­±²¨«Í¢Ô °¶�¸�®¹³Å·Ë®¹¯²®t¬¢×»¨­ª­±´¶ÕÍÌÂÃ×¢¯ÈèÁ®Ó³¦±²µ ½|±Ë·´®°¯È®�Âöվ¿Ï¢ª­®°±²®¹ª­À¿®H¦�Ï¢ª«¨ÐÂè­±¨­Í ±²µ¢®�³�Ïx®¹Â°¨ÇØx°½|±È¨­¶ÕÍ�åY{�µ¢®ËÏ»¯²¶ê¶ ¼v³é¨«ÍÎèÕ¶Áª«èÁ®Ó¸�¨­Íº³�µ»¶|·t¨­Í¢Ô©³�¶Õ¾¿®Å¶ ¼»±²µ¢®�Ï¢¯È¶ÁÏx®°¯²±²¨«®¹³ ½ ¯È®Ë½Áª«³²¶ ³²¨­ÔÕÍ¢¨­Ø °½ÁÍձȪ­À³�¨«¾¿Ï¢ª­®¹¯¹åtÛ�¢ Í¢®�ÂöÕ×¢ª«¸í®°èÕ®°ÍƳ²½ À̱²µ¢®Ó³�®�½ ¯È®�)�®¹ª­®¹¾º®¹ÍαȽ ¯ÈÀ�+Dzê½Á³�·´¶Á¯ÈÑ�³Ë¶ÕÍÚ½ ª«ÔÁ®°¬»¯È½Á¨«Â�ÔÁ®°¶Õ¾¿®Ã±²¯ÈÀÌÔÕ¶»å Ý

õ\� »b¡

Page 64: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ñ �t®¹Â°®°Íα ·´¶Á¯ÈÑ�³t¬êÀ���µÎ×»¾ ®Ã±©½Áª åYÔ­ß � �Rzéß �b¡ ÖøÂêн ¯È¨ÇØ ®¹³t±Èµ¢®î§Ö½ ¯ÒÂèн3���ᲨÐÂҵα²®°Í»¶ ±²µÚÏ ½ Ïx®°¯Ò³t¼�×¢¯²±²µ¢®¹¯°z�®¹èÁ®°ÍD�±²×»½Áª­ª«À�ÔÁ®°±�±²¨«Í¢Ôþ³�¶Õ¾¿®ï°¶ê¸¢®¹³ ·t¨Ç±Èµ¬«èîÛvÊj©¹ÝºÂöÕÍ»³�±²¯È×»Âæ±È¨­¶ÕÍ�±²¨«¾¿®þÛ�±²µ¢®ÆÍ¢¶Á±È½ ±²¨«¶ÁÍM«èÌÛeç Ý ¾¿®Ó½ Í»³º¨«ÔÁÍ¢¶Õ¯²¨«Í¢ÔÏ ¶Õª­Àꪫ¶ÁÔ ¼v½ÁÂæ±È¶Á¯Ò³ÈÝÃå|{�µ¢®�®°èÕ®°Íα²×»½Áª�µ¢¶ÁÏx®Ö¨«³t±²µ»½ ±t±²µ¢®Ó³�®©¼v½ ¾¿¨«ª­¨«®¹³�·t¨­ª«ª�¬x®¹Âöվ¿®Ö°¶Á¾¿Ï¢ª«®Ã±È®°ª«ÀÉ®H¦�Ï¢ª«¨ÐÂè­±¹å

� ñ�­ òôö ü úv��� óÆ�HõÛø°ö öl®(¯¤ ®�Í¢¶|·�¯È®Ã±²×»¯²Íí±²¶|·�½ ¯Ò¸¢³Å±²µ¢®Ö±Ò½Á³²Ñ¼ ¸¢®¹³ÈÂïȨ­¬¢¨«Í¢Ôî½ ª«ÔÁ®¹¬¢¯Ò½ ¨ÐÂN� ÔÁ®°¶Õ¾¿®Ã±²¯ÈÀ °¶�¸�®¹³¹å ¤ ®Ö·t¨«ª­ªé³ð±Ò½ ¯²±´¬êÀÌÔÕ¨­èꨫ͢Ժ½ÁÍ®H¦¢½Á¾ºÏ»ª­®©¶ ¼¦½ èÕ®°¯ÈÀ P]G�2:P?I[<?>�< ½Áª­ÔÕ®°¬¢¯Ò½ ¨ÐÂN� ÔÁ®¹¶Á¾¿®Ã±È¯²À¿Âö�¸�®�z ³�Ïx®¹Â°¨ÇØx°½ ª«ª«Àɽ�Ô­ß°Í»÷ » ÷°ß ¡ Ö - © °¶�¸�®Áå ¤ ®©·t¨«ª«ª�±²µ¢®¹Í½|±²±²®¹¾ºÏ¢±t±²¶Ì³²µ¢¶|·�µ¢¶|· ±²µ¢®�°¶ÁÍ»³�±²¯È×»Âæ±È¨­¶ÕÍíÔÕ®°Í¢®¹¯È½Áª­¨«ì°®Ó³°å¢ ×¢¯ü®?¦¢½ ¾¿Ï¢ª«®t·t¨­ª«ª»¬x®�½�Âö�¸�®t¬ ½Á³²®¹¸º¶ÁÍ¿±Èµ¢®�)�Ï»ª«½ÁÍ¢®!+�Å - © Ã9Å - © å ¤ ®�·�½ Íαø±²¶ ÂÒµ»¶Î¶Î³�®t½�³²×¢¬»³²®Ã±Å¶Á¼ ±Èµ¢®�Ï¢ªÐ½ Í»®·t¨­±²µÉª«¶ ±Ò³Å¶Á¼�Ï ¶Õ¨­ÍαҳŶÕÍÌ·tµ¢¨ÐÂҵ¶ ®°è|½ ª«×»½|±È®�ª«¶|·Õ� ¸¢®°ÔÁ¯È®°®t¬»¨­è|½ ¯È¨Ð½|±²® Ï ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª«³Å¨­Íí¶Á¯Ò¸�®°¯Å±²¶ Ôծñ�Âö�¸�®°·´¶Á¯Ò¸¢³¹å¤ ®îÑÎÍ»¶|· ±Èµ»½|±�¨­¼´·´®ÌÂÒµ¢¶ê¶Õ³²®î³�¶Õ¾¿®Ã±²µ»¨­Í¢Ôï±Èµ»½|± ¨«Íα²®¹¯È³²®¹Âñȳ©±²¶ê¶Ú¾ ×»ÂÒµ ·t¨­±²µ�ª«¨«Í¢®¹³�¶Õ¯�Â諯Ȱª­®Ó³?zz±²µ¢®¹Íþ·Ë®î·t¨«ª­ªµ»½ èÕ®�±²µ¢®¿³È½ ¾¿® Ï¢¯È¶Á¬»ª­®¹¾ ±Èµ»½|±Ö·Ë®º¸�¨Ð¸ ·t¨­±²µÚ±Èµ¢® ·tµ»¶Áª«® Ï¢ªÐ½ Í¢®�z ±²µ¢®¹¯²® ·t¨­ª«ªé¬x®¿³�×¢¬ ³�Ï»½ÕÂîӳ�¸�¶ÕÍi® ±�ÂöÕÍαȽ ¨«Í¾ × ÂÒµí¨«Í�¼�¶Á¯È¾î½|±È¨­¶ÕÍ�姩¶Áϻϻ½D® ³Ì¨«Í»³²¨­ÔÕµÕ±í·´½Õ³î±²¶ ×»³²®~½ Í ½Áª­ÔÕ®°¬¢¯Ò½ ¨ÐÂÚÂÃ×»¯²èÕ® � Ï¢¨«ÂÒÑ ½�Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª Ù¿ÛG:z÷zÞ¢Ý̶ ¼ ³²¾¿½Áª­ªÖ¸�®¹ÔÁ¯È®°®bzt½ÁÍ»¸ÂöÕÍ»³²¨«¸�®¹¯�±²µ¢®�³²×¢¬»³²®Ã±

ûÎ �ÌÛ ÙÖÝ ÿ ÛG:z÷|Þ�Ý � Ù¿Û�:z÷|Þ¢Ý � � �ú Í~¶Õ¯È¸¢®°¯ ±²¶Æ½ èÁ¶Á¨Ð¸Æ¨«ÍձȮ°¯Ò³�®ÓÂæ±È¨­Í¢Ôí±²¶ê¶í¾ ×»ÂÒµ ·t¨Ç±Èµ ª«¨­Í»®¹³°z�Â諯Ȱª­®Ó³ ½ÁÍ»¸Ú±Èµ¢®°¨«¯Ö¶ ±²µ»®°¯Ö³�¾î½ ª«ª=� ¸�®¹ÔÁ¯È®°® ¼�¯²¨«®°Í»¸»³?z�·´®Â°½ÁÍÚÂÒµ¢¶ê¶Õ³²®�Ù ³²¶î±²µ»½ ±�¨­±°® ³ ' INI[<�43MRP ' Ì?;=< Ûv³²®°®a¬´®°ì¹¶Á×�±\® ³t±²µ¢®¹¶Á¯È®°¾ ¬x®°ª«¶|·�ÝæåÕ{�µ¢¨Ð³?z»±²¶ÕÔÁ®Ã±Èµ¢®°¯�·t¨Ç±Èµ~½£áð×»¸�¨ÐÂ諶Á×»³ÂÒµ¢¶Õ¨«Â°®©¶Á¼é·tµ¢¨ÐÂÒµÆÏ ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª«³´±È¶º× ³�®}z¢·t¨­ª«ª�Àꨭ®¹ª«¸í±Èµ¢®�¸�®¹³²¨«¯²®Ó¸ÉÏ¢¯È¶ÁÏx®°¯²±²¨«®¹³¹å�궿¨«Íï¶Õ×¢¯t®H¦¢½Á¾ºÏ»ª­®}z�·Ë®Ö·t¨«ª­ª�× ³�® �

ñ " ß ¡ z�¨ å ®ÁåYÅ ±° - ©ñ û� �ÌÛ ÙÖÝ´ÔÕ¨­èÕ®°Íï¬êÀÉÙ¿Û�:z÷|Þ¢Ý Þ / á � Û�:Éá ß Ý�:éÛG: a ßÓÝæåñ {�µ¢®�Ï ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª«³t·´®�·t¨«ª­ªé×»³�®�½Õ³�Âö�¸�®¹·Ë¶Õ¯È¸»³t½ ¯È®�ª­¨«Í¢®¹½Á¯�Âöվ ¬¢¨«Í»½ ±²¨«¶ÁÍ»³�¶Á¼ ±Èµ¢® » ¬»½Õ³�¨Ð³tÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³ÿ ßÁ÷|:z÷|Þx÷|: / ÷|:+Þ�÷z:²©��Îå Ï�¶Á±²¨ÐÂîڱȵ»½|±ï·Ë®~½Á¯²®¹Íi® ±Ì±È½ÁÑΨ«Í¢Ôã½Áª­ª©Ï ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª«³î¶Á¼ ½�ÔÁ¨«èÁ®¹Í¡¸�®°ÔÕ¯²®¹®bz�¬¢×�±Æ½Â°½ ¯È®Ã¼�×»ª­ª«ÀÌÂÒµ¢¶Õ³²®°ÍƳ²×¢¬»³²Ï»½Á°®Áå

{�µ¢®�Ï»½Á¯È½Á¾¿®Ã±²®¹¯È³´ÔÕ¨­èÕ®°ÍɬêÀɱ²µ¢¨Ð³�Âö�¸�®�½Á¯²®�¸�®Ó³²Â°¯²¨«¬ ®Ó¸É¬x®°ª«¶|· �

ñ " ß ¡ � ¬´ÀíÂÒµ»¶Á¨ÐÂîÁåñ Ê ß°Í � {�µ¢¨Ð³ÆÏ»½ ¯Ò½ ¾¿®°±²®°¯ï¨Ð³É±ðÀêÏ¢¨Ð°½Áª­ª«À¡èÁ®¹¯²¨­Ø»®Ó¸�¬êÀ¡®H¦�µ»½Á×»³ð±È¨­èÕ® ³²®¹½Á¯ÈÂÒµzå ú Í�±²µ»¨«³Ú³²Ï ®ÓÂè­Ø Âþ°½Õ³�®}z¨Ç± ¾î½ Àê¬x®¡èÁ®°¯È¨­Ø»®¹¸ ±Èµ»½|± û ÿ Û � ÷ � Ýæ÷ÓÛ´³ ßÁ÷ � ÝÃ÷¹Û � ÷�³9�ÕÝæ÷¹Û ¡ ÷_³ ¡ Ýæ÷ÓÛ�� ÷�³��ÎÝÃ÷¹Û » ÷�³ � Ýæ÷ÓÛ9õê÷_³ ¡ Ýæ÷ÓÛvÍ»÷�³ » ÝÃ÷Ûðß � ÷�³ � Ýæ÷¹Û�ßÁßÕ÷�³ ßÓÝN�Õå

ñ  » � x ¾º®Ó³²³È½ ÔÕ®�¨Ð³ ½ÉÏ ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ªé¶ ¼ü±Èµ¢®�¼�¶Õ¯²¾¶µ E a µ - : a µ / : / a µ © :(© a¸· E Þ a¸· - :�ÞÚ·tµ¢¨ÐÂÒµ ¨«³ÔÁ¨«èÁ®°Íí¬êÀí³²¨*¦í°¶ê®�;ÌÂè«®°Íαȳ°zê±²µê×»³�ÔÁ¨«èΨ«Í¢Ô¾¿®¹³È³²½ÁÔÁ®©ª­®¹Í¢Ô ±Èµï¶Á¼ » åñ ù ß ¡ z¢½Á³�·´®Ö·t¨­ª«ªz½Á¯²ÔÕ×¢® ¬x®°ª«¶|·�å

ú Í�ÔÕ®°Í¢®¹¯È½Áª�ػͻ¸¢¨­Í¢Ô ±²µ¢® ¬¢ª«¶êÂÒÑ ª«®°Í¢ÔÁ±²µ ÛvÊzÝ̨гÉÍ»¶ÁÍ^� ±²¯È¨­èê¨Ð½ ªt±Ò½Á³²Ñ5z�µ¢¶|·´®°èÁ®¹¯î±²µ»® ¸�¨Ð³ð±Ò½ Í»Â°®~°½ÁÍ�¬x® ½ ¯ÈÔÁ×»®¹¸½ ª«ÔÁ®¹¬¢¯Ò½ ¨Ð°½ ª«ª«ÀÁå ú ÍƱ²µ¢¨Ð³ ³²Ïx®¹Âèн ª °½Õ³�®}z»·´® ¸�¶É³²¶Ì¬êÀï½ÁÍ ½Á¸�� µ¢¶�Â�½ ¯ÈÔÁ×»¾º®¹Íαt±²×¢Í¢®Ó¸Æ±²¶íÔÁ¨«èÁ®Ö±Èµ¢® ¬x®¹³�±�Ïx¶Õ³È³�¨«¬¢ª«®¯È®¹³²×¢ªÇ±Óå çé½|±È®°¯Ì·´® ·t¨«ª­ª ¾º®¹ÍᲨ«¶ÁÍ�½�³²ª­¨«ÔÁµÎ±²ª«À ¾º¶Õ¯²®ÚÔÕ®°Í¢®¹¯È½Áª�½ ¯ÈÔÁ×¢¾¿®¹ÍÕ±î±Èµ»½|±í¨«³É¾º¶Õ¯²®Ú¨«ª«ª­×»³�±²¯Ò½|±È¨­èÕ®Ú¶ ¼Ö±²µ»®Ï¢¯È¨­Í Âè«Ï¢ª­®�¬x®°µ»¨­Í»¸í±Èµ¢®�ÂöÕÍ»³ð±È¯²× Âæ±²¨«¶ÁÍzå

õ\� » �

Page 65: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

èÐé !¢s�� ê��v� ��2RT�2:G32�/Dâ\<HI[G�ZRG3;UT325G3� ' 03;§¹ Û�:z÷|Þ¢Ý µ E a µ - : a µ / : / a µ © :²© a¸· E Þ a±· - :+Þ ' KÐâ\<HI]G�G32"03>�ªG�KN>(K '*) ZDG ' 2R>�K ' 2 û @gÖy3hih:j ¤ ®�¸�¨«èꨫ¸¢® ±Èµ¢®�½ Í ½ ª«Àê³²¨Ð³�¨­ÍᲶº±ð·´¶î°½Á³²®¹³ �ºb» ðzì*¼�ñ · E a½· - : ¸�¶ê®¹³�Í¢¶Á±�¸�¨­èê¨Ð¸�®�µ E a µ - : a µ / : / a µ © :²©ÁåU˶ÁÍ ³�¨Ð¸�®°¯�½ÁÍêÀ Âöվ¿¾º¶ÕÍþì°®°¯È¶�Û & ÷�¾éÝ�¶ ¼ ¹ Û�:é÷zÞ¢ÝÖ½ Í»¸þÙ¿Û�:é÷zÞ¢Ýæå��ê×»ÂÒµ�½Æì¹®°¯È¶ï¾ ×»³�± ½ ªÐ³�¶Æ¬x®É½ïì°®¹¯²¶Ú¶Á¼�½ÁÍÎÀÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª�¶ ¼z±Èµ¢®©¼�¶Á¯È¾ ¹ ç`F a Ùºç�¿�zμ�¶Á¯t½ ÍêÀîÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³�F�Û�:é÷zޢݴ½ Í»¸2¿ Û�:é÷zÞ¢Ýæå ú ¼ ·Ë®ÖÂÒµ¢¶ê¶Õ³²®@F�Û�:é÷zÞ¢Ý Þ�Û · E a¸· - :�Ýüá¡Ûvµ E a µ - : a µ / : / a µ © :(© Ý�½ÁÍ»¸B¿ ÛG:z÷|Þ�Ý á�Û · E a¸· - :�Ý / z ±Èµ¢®°Í~±²µ¢® ¯²®Ó³�×»ªÇ±È¨­Í¢ÔíÏ ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª¹ çkF a Ùbç�¿ã¨Ð³é¨­Í»¸¢®°Ïx®°Í»¸�®¹Íα ¶Á¼�ÞÖ½ÁÍ»¸�®\¯Õ× ½ ªÐ³ÁÀ¿ÛG:xÝ � Û · E aR· - :xÝ / ÛG:øá ß Ý�:éÛG: a ß ÝÓáºÛvµ E a µ - : a µ / : / a µ © :(©¹Ý / z½ÆÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áªø¶ ¼t¸�®°ÔÕ¯²®¹® » ¨«³�:éå��ꨫͻ°®~Û & ÷�¾éÝ�³�µ¢¶Õ×¢ªÐ¸ ¬x®É½ï¯È¶Î¶Á±�¶ ¼t½ ÍêÀ~³²×»ÂÒµþÏ ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áªü·Ë®î°¶Áͻ°ª­×»¸¢®±²µ ½|± & ¨Ð³t½¿¯²¶ê¶Á±´¶Á¼?À¿ÛG:xÝ�½ÁÍ»¸í±²µê×»³�±Èµ¢®°¯È®�½ ¯È®Ö½ ±t¾º¶Î³ð±�³²¨*¦ïÏ ¶Î³²³²¨«¬¢ª­®�ÂÒµ¢¶Õ¨«Â°®¹³Ë¼�¶Á¯ & åÏ�®?¦ê±�·Ë®ÖÍ¢¶Á±²®©±²µ»½ ± · E a & · - Ò � z¢³²¨«Í»Âî֨«ÍƳ²×»Âҵƽ¿Â°½Á³²®"µ E a µ - & a µ / & / a µ © & ©�·Ë¶Õ×¢ªÐ¸í½Áª«³²¶ µ ½ èÁ® ±²¶î¬x®ì°®¹¯²¶îz�·tµ¢¨ÐÂҵư¶ÁÍα²¯Ò½Á¸¢¨«Âñȳ´±²µ»®�½Á³È³�×¢¾¿Ï�±È¨­¶ÕÍɼ�¶Õ¯t±²µ»¨«³�¹½Á³²®Áå(�ê¶î·´®�°½ÁÍïÍ»¶|· ×»³²®Ö±²µ¢® ¯²®¹ª«½ ±²¨«¶ÁÍ ¹ Û�:z÷|Þ¢Ý � ±È¶ÂöÕÍ»Âê«×»¸�®Ö±Èµ»½|±D¾ á�Û$µ E a µ - & a µ / & / a µ © & ©ÓÝ ï Û · E a½· - & Ýt½ Í ¸ï±²µê×»³�±Èµ¢®�Íê×¢¾ ¬x®°¯�¶ ¼øÏ»½ ¨«¯Ò³�Û & ÷�¾éÝt±²µ»½ ±³È½|±²¨Ð³�¼�À̬ ¶Á±²µ ¹ ½ÁÍ»¸ÆÙ ¨Ð³�½|±t¾¿¶Õ³�±�³�¨=¦�åºb» ðzì"Â+ñ · E a½· - : ¸�¨­èê¨Ð¸�®¹³�µ E a µ - : a µ / : / a µ © : © åú Íí±²µ¢¨Ð³�°½Á³²® ¹ Û�:z÷|Þ¢Ý Û · E a�· - :xÝ°Û�Þ a C�E a C - : a C / : / Ý ¹ - Û�:xÝ ¹ / Û�:z÷|Þ¢Ýæå(�ꨫͻÂî©®°èÕ®°¯ÈÀ¿ì°®°¯È¶º¶ ¼ ¹ ¨Ð³�½ ì¹®°¯È¶¶ ¼ ¹ - ¶Á¯t¶Á¼ ¹ / z¢·´®Ö¹½ ÍƸ�¨«èΨи�®Ö±Èµ¢¨«³�½ Í»½Áª­À�³²¨«³´¨«Íձȶ¿±ð·Ë¶¿Ï»½Á¯�±Ò³°åÏ�¶Á±²®ºØ»¯Ò³ð±Ö±Èµ»½|± ¹ - Û�:xÝ�½ Í»¸ Ù¿Û�:z÷|Þ¢Ý�µ ½ èÁ®¿½|±�¾¿¶Õ³�±©±ð·´¶ÚÂöվº¾¿¶ÕÍ~ì°®¹¯²¶Î³¿Û & ÷�¾éÝHzé·t¨­±²µ & á · E ï · - ½ Í»¸K¾³È½|±²¨Ð³�¼�ÀΨ«Í¢Ô*¾ / � Û & á ßÓÝ & Û & a ß ÝæåÏ�®?¦ê±�®°ª«¨­¾¿¨«Í»½|±È¨­Í¢Ô Þ̼�¯²¶Õ¾ ¹ / ÛG:z÷|Þ�Ý�½ÁÍ»¸ÆÙ¿Û�:z÷|ޢݴ·Ë®©Ø»Í»¸í±Èµ»½|±�½ÁÍÎÀíÂöÁ¾¿¾¿¶ÁÍïì°®¹¯²¶ÆÛ & ÷�¾ Ý�¾ ×»³�±�³È½|±²¨Ð³�¼�À

Û C4E a C - & a C / & / Ý / � Û & á ßÓÝ & Û & a ßÓÝæ÷½ Í»¸�¾ á�Û C E a C -4& a C / & / Ý �x Ôν ¨«Íizηˮ©ÂöÁÍ Âê«×»¸�®t±Èµ»½|±´±²µ¢®¹¯²® ½ ¯È®�½|±´¾º¶Î³ð±Ë¼�¶Á×¢¯�ÂÒµ¢¶Õ¨«Â°®¹³ü¶Á¼ & ³È½|±È¨«³�¼�ÀꨭͻÔ�±²µ¢® Ø»¯Ò³ð±´ÂöÁÍ ¸�¨Ç±È¨­¶ÕÍizê®°èÕ®°¯ÈÀ ³²×»ÂÒµÂÒµ¢¶Õ¨«Â°®ºª«®¹½Õ¸¢³©±²¶Æ¶ÕÍ¢®*¾ ³È½|±È¨«³�¼�ÀꨭͻÔí±Èµ¢®î³�®ÓÂöÕÍ»¸ °¶ÁÍ»¸¢¨Ç±È¨­¶ÕÍ�å�{�µê×»³ ¹ / ½ Í»¸ Ù�µ ½ èÁ®¿½|±�¾¿¶Õ³�±�¼�¶Á×¢¯�°¶Á¾¿¾¿¶ÁÍ

ì°®¹¯²¶ê®Ó³°å ü×¢±�±²¨«Í¢Ô~±²µ¢®É±ð·Ë¶ Ï ½ ¯²±È³Ö±È¶ÁÔÁ®°±²µ¢®¹¯°z¦·´®É³²®°®Ì±Èµ»½|± ¨­Í�±Èµ¢¨Ð³ ¹½Á³²®É½ ªÐ³�¶ ¹ ½ÁÍ»¸�Ù¤µ»½ èÁ®Ì½ ± ¾¿¶Õ³�± ³²¨*¦ã°¶Á¾¿¾¿¶ÁÍì°®¹¯²¶ê®Ó³°å

� ®¹Í»Âî}z ·´®´Ôծñü½7ÔÇß\Í¢÷ » ÷°ß ¡ Ö - © Âö�¸�®Áå ú Í¿ÂöÁÍαȯȽճ𱦽���®°®¹¸^���ê¶Õª­¶Õ¾¿¶ÁÍ Â°¶ê¸¢®�°¶Á×¢ªÐ¸ ÔÁ¨«èÁ®�½ ³²ª­¨«ÔÁµÎ±ø¨«Í»ÂïȮ¹½Õ³�®´¨­Í ±²µ»®¸�¨Ð³ð±Ò½ Í»Â°®bz|±È¶îß?�îz ¼�¶Á¯ü½Ö¬¢¨«ÔÖ¨­Í»Â°¯²®Ó½Á³²®Ë¨«Íº±²µ¢®�½Áª­Ï»µ»½ ¬x®Ã±ü³²¨­ì¹®bz ±È¶¿ß°Í¢åY{�µ¢¨Ð³ø¸�®°¾¿¶ÕÍ»³ð±È¯È½ ±²®Ó³?z Í»¶ÁÍ^� ½Á³²À꾺Ϣ±²¶ ±È¨«Â¹½ ª«ª­À}z³²¶Á¾¿®Ö¶ ¼ ±²µ¢®Ö±È¯È½Õ¸�®°¶¼Ù�³Ë±²µ ½|±�¬x®¹Âöվ¿®�Ï ¶Î³²³²¨­¬»ª­®Ö·t¨­±²µ x § °¶�¸�®¹³¹å

�º{@Ã}h w��ÅÄ!O ��� {�h»y|{�� ¬´®°¼�¶Á¯È® ÔÁ¶Õ¨­Í»Ôî¶ÁÍڱȶí¸�®Ó³²Â°¯²¨«¬¢¨«Í¢Ô x § °¶ê¸¢®¹³�¨«Íڱȵ¢®°¨«¯�¼�×»ª­ª¦ÔÁ®¹Í¢®°¯Ò½ ª«¨­±ðÀbz»·´® ¾¿®¹ÍձȨ­¶ÕͶÁÍ»®îÔÁ®°Í»®°¯Ò½ ªüÏ¢¯È¨«Í»Âè«Ï¢ª«®î±²µ»½ ± °½ÁÍþ¬ ®Ì× ³�®Ó¸ ±²¶~¸�®°±²®¹¯²¾¿¨«Í¢®î±²µ»®É¸�¨Ð³ð±Ò½ Í»Â°®bzé¼�¶Á¯ x §¤Âö�¸�®Ó³�¨«Íþ±²µ¢®ÉÏ¢ª«½ÁÍ¢®Áåù¢�¼ÂöÕ×¢¯Ò³�®}z ±Èµ¢®º±²¯È¨«ÂÒÑÚ¨«Í ÔÁ®Ã±²±²¨«Í¢ÔÚÂö�¸�®Ó³ ¶Á¼ÅªÐ½ ¯ÈÔÁ® ¾¿¨«Í¢¨«¾ ×¢¾ ¸�¨«³�±È½ÁÍ»Âг©±²¶ïÏ¢¨«ÂÒÑƱȵ¢®¿¯²¨«ÔÁµÎ±�ÂÃ×¢¯ÈèÁ®¿Ù7z�½ Í»¸~±²µ»®¯È¨­ÔÕµÕ±�¬»½Õ³�¨Ð³t³�®°±t¶ ¼éÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³°å x ÔÁ×»¨«¸�®Ö¨«Íɱȵ¢¨Ð³�ÂÒµ¢¶Á¨ÐÂг�¬Ë®¹ì°¶Õ×�±°® ³Ë±²µ¢®¹¶Á¯È®°¾Bz�·tµ¢¨ÐÂÒµíÔÕ¨­èÕ®¹³´×»³t³²¶Á¾¿® ¨Ð¸�®Ó½¶ ¼¦·tµ¢®¹¯²®©±²¶¿ª«¶ê¶ÁÑ ���� {�h»y|{�� ê����ÇÆp�º{�Ãbhxwg�ªÈY! é hP� ubÈ é hP�éu×�¹s��ã{B!¢u:h�É�ë E¸Ê Û�:z÷|Þ¢Ýæ÷[�íÛ�:é÷zÞ¢Ý 0�I[< ZRG3;UT325G3� ' 03; K GtE 4b<�V�I]<]<ù - ÷²ù / I[<NKSZR<�PH> ' $�<?;UT X >�CD<?2 ' E�>�CD<?TFK[CD0�I[<Ð�FG�I[<�>�CD0�2 ù - ù / â\<?I[G°<HK X >�CD<?Tª�ÐM�KN>|K[CD0�I[<F0,P�G3�7�ªG32ÐEH0}PH>�G3I?@

õ\� » �

Page 66: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

x Ï¢¯È¶ê¶ ¼¦¶ ¼ ±²µ¢¨Ð³t¼v½ÕÂæ± Â¹½ ÍƬx®�¼�¶Á×¢Í ¸Æ¨­ÍÚ¾¿¶Õ³�±t±²®?¦ê±È³�¶ÕÍÚ½ ª«ÔÁ®°¬»¯È½Á¨«Â©ÔÁ®¹¶Á¾¿®Ã±È¯²ÀɶÁ¯�½Áª­ÔÕ®°¬¢¯Ò½ ¨ÐÂÖÂÃ×¢¯ÈèÁ®Ó³�ÛvÂæ¼ðå½ÔÇß ��� z{�µ¢®¹¶Á¯È®°¾ ¡ å«ßHÖ�Ýæå|{�µ¢®©¯È¶Á×¢Ôյɨи�®¹½ ¨«³´±È¶ ®¹ª­¨«¾¿¨­Í ½|±²®Ö¶ÕÍ¢® ¶Á¼z±Èµ¢®Öè ½Á¯²¨Ð½ ¬»ª­®Ó³�Þî¬êÀîØ»Í ¸�¨­Í»Ô Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³Õ�¿ÛG:z÷|Þ�ݽ Í ¸2Ë ÛG:z÷zޢݴ³²×»Âҵɱȵ»½|± Ê çH� a �.ç�Ë�¨Ð³t½�¼�×¢Í Âæ±²¨«¶ÁÍﶠ¼�:ƽÁª­¶ÕÍ¢®Áå|{�µ¢® ¼v½ÁÂñ�±²µ»½ ±�³²×»Âҵƽ Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªx®H¦�¨«³�±È³¨Ð³�Í¢¶ ±´±²¯È¨­èê¨Ð½ ªSz�¬¢×�±tÍ¢¶Á±´±È¶ê¶ µ»½Á¯È¸Ì±²¶¿Ï¢¯È¶|èÁ® ®°¨­±²µ¢®¹¯¹åe¢ ͻ°® ¶ÕÍ¢®©ÔÁ®Ã±Ò³Ë±²µ¢¨Ð³�Ï ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª�z�¨­±tª­¨«¾¿¨Ç±Ò³´±²µ¢®ÖÍê×¢¾ ¬x®°¯¶ ¼øÂÒµ¢¶Õ¨«Â°®¹³´¨­Í�: ½ÁÍ»¸É¨«Íï±²×¢¯ÈÍƶÁÍ¢®�¹½ Í節¨«¾¿¨Ç±�±Èµ¢®�Íê×¢¾ ¬x®°¯t¶Á¼RÞ5® ³´¼�¶Á¯t®¹èÁ®°¯ÈÀ̳²×»ÂÒµv:éå�t®°±²×¢¯ÈÍ¢¨«Í¢Ôº±²¶º¶Á×¢¯�Ï¢¯È®°èꨫ¶Á×»³´®H¦¢½Á¾ºÏ»ª­®}zê±²µ¢®ÖÑÁ®¹À¿±²¶º±²µ»®©®?¦¢½ ¾¿Ï¢ª«® ·�½Á³´®°Í ³�×¢¯È¨«Í¢Ô ±Èµ»½|±tÍ¢¶ºÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª�¨­Íí±²µ»®³²×¢¬»³²Ï»½Á°® ³�Ï ½ Í¢Í¢®Ó¸Æ¬êÀɱȵ¢® ¬»½Õ³�¨Ð³�®¹ª­®¹¾¿®°Íαȳ ÂöÁ×»ª«¸Úµ ½ èÁ®�½Ì°¶Á¾¿¾¿¶ÁÍƼv½ÁÂñ²¶Õ¯�·t¨­±²µ~Ù¿Û�:é÷zÞ¢Ýæå ¤ ®�®Ó³ð±Ò½ ¬¢ª«¨Ð³�µ¢®Ó¸±²µ»¨«³t¬êÀÌ®¹Í»³²×¢¯²¨«Í¢ÔîÙ ·�½Á³�¨«¯²¯È®¹¸¢×»Â諬¢ª«®bzê±²µ»®°ÍƬêÀ̯²®Ó³ð±È¯²¨ÐÂæ±È¨­Í»Ô ±Èµ¢®�Þɸ�®¹ÔÁ¯È®°®©±²¶¿¬x®°¨«Í¢Ô9áð×»³�±�ßÁå

� ñNð ò �ôõqöBõ@Ñ¥���Ë� õ@Ô½ÿÆ�4Ò§©®°Í»®°¯Ò½ ª«¨­ì¹¨­Í¢Ô�±²µ¢®Ë¨«¸�®Ó½�¶Á¼Î±Èµ¢®´Ï¢¯²®¹èꨭ¶Õ×»³�®?¦�½Á¾¿Ï¢ª­®ü±²¶�¾¿¶Õ¯²®ø±Èµ»½ Í�±ð·Ë¶�è|½Á¯²¨Ð½ ¬¢ª«®¹³é½ Í»¸Ö¶ÕÍ¢®ÅÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÕ¯²®¹ª«½ ±²¨«¶Áͽ ¾¿¶ÕÍ¢Ôº±²µ¢®¹¾�z»¶ÁÍ¢®Ö¬¢×¢¨«ªÐ¸¢³ x § Âö�¸�®¹³t½Õ³´¼�¶Áª«ª­¶|·�³ �

ßÕål ü¨ÐÂÒÑ X á ß©Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª�°¶ÁÍ»³�±²¯Ò½ ¨«Íαȳ´¶ÁÍ X è|½ ¯È¨«½Á¬¢ª«®¹³ �Ì - ÛG: - ÷ �$�=� ÷z:   Ý �åååÌ   ~Ø- ÛG: - ÷ �$�=� ÷z:   Ý �

� å�ç�®Ã± û1 �ÉÛ Ì - ÷ �=�$� ÷ Ì   ~i- Ý àÿ � �*Ì - Û��zÝ çÇç<ç ÍÌ   ~i- Û��zÝ � �©¬x®Ö±²µ¢®�³²®Ã±t¶ ¼¦Âöվº¾¿¶ÕÍíì¹®°¯È¶Î®Ó³´¶ ¼Ì - ÷ �?�°� ÷ Ì   ~Ø- å¡ å~U˵¢¶ê¶Õ³²®©½ºª«¨­Í¢®Ó½ ¯�³²×¢¬»³²Ï»½Á°®Ö¶ ¼¦Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ªÐ³´·tµ¢¨ÐÂҵƹ½ Íi® ±�½ ÔÕ¯²®¹®�±È¶ê¶º¶Á¼Ü±²®¹Íï·tµ»®°Íﯲ®Ó³ð±È¯²¨ÐÂæ±È®¹¸É±²¶ û å

¢�¼tÂöÁ×»¯È³²®bz�¶ÕÍ»Âî̽ÁÔÕ½Á¨­Í ®°èÕ®°¯ÈÀձȵ¢¨«Í¢ÔÚ¸�®°Ïx®°Í»¸»³�¶ÁÍþµ¢¶|· ¶ÁÍ¢®ÌÂÒµ¢¶ê¶Î³�®Ó³�±Èµ¢®ÌÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³ Ì - ÷ �?�°� ÷ Ì   ~Ø- ½ÁÍ»¸±²µ»®°Í ±²µ¢®î¬ ½Á³²¨«³Ö¶Á¼´Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³©±²¶Æ®°è|½ ª«×»½ ±²®Ì½|±Ö±Èµ¢®Ì³�®°± û å,�êÏx®¹Â°¨ÇØ Â¹½ ª«ª­À}zz¶ÕÍ¢®¿±²¯È¨­®Ó³©±²¶ÚÏ¢¨ÐÂÒÑ Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³Ì - ÷ �?�?� ÷ Ì   ~i- ³�¶ï±²µ ½|±�� û ��¨Ð³Öª«½Á¯²ÔÕ®bz�·tµ¢¨«ª«®¿±²µ¢®¹¯²®î®?¦ê¨Ð³�±È³�½ïª«½Á¯²ÔÕ®îÂöÁª«ª«®¹Âæ±È¨­¶ÕÍ ¶Á¼ËÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³Ö·tµ¢¨«ÂÒµ�¸�¶ÕÍi® ±½ ÔÕ¯²®¹®�±È¶ê¶º¶Á¼Ü±²®¹Íï¶ÕÍ û å�ê¶Õ¾º®¹·tµ»½|±¿³�×»¯²Ï¢¯È¨Ð³�¨«Í¢ÔÁª«Àbz¦½ ª«ÔÁ®¹¬¢¯Ò½ ¨ÐÂN� ÔÁ®°¶Õ¾¿®Ã±²®¹¯È³©µ»½Õ¸�¬x®°®°Í ÂöÁÍ ³�¨Ð¸�®°¯È¨«Í¢ÔÚ®H¦¢½ÁÂñ²ª«À ±²µ¢¨Ð³ Ï»¯²¶Õ¬¢ª­®¹¾ ¼�¶Õ¯ ½~ª­¶ÕÍ¢Ô±²¨«¾¿®Áå x Âöժ­ª«®¹Âñ²¨«¶ÁÍ ¶Á¼ Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³ ¨Ð³î½Á³È³²¶ê°¨«½ ±²®Ó¸ã·t¨­±²µ ½G)ÈÂÃ×¢¯ÈèÁ®�+ڱȵ»½|±ÌÂöÕÍ»³²¨«³�±È³º¶ ¼Ö½ ª«ªtì°®¹¯²¶ê®¹³º¶Á¼�±²µ»®Ïx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª«³©¶|èÕ®°¯ ±²µ¢®î½ ª«ÔÁ®¹¬¢¯Ò½ ¨Ð Â꫶ճ²×¢¯È®bz Å , z�¶ ¼eÅ , åª�ê×»ÂÒµþ½í°ע¯ÈèÁ®¿ÂöÁÍ ³�¨Ð³ð±Ò³©¶ ¼Ë¨«Í�ػͻ¨Ç±È®°ª«À~¾î½ ÍêÀÚÏx¶Á¨«ÍÕ±Ò³?z¬¢×�±�¶ÁÍ»ª­ÀºØ»Í¢¨­±²®¹ª­Àî¾î½ÁÍÎÀî½Á¯²® ¯È½ ±²¨«¶ÁÍ»½Áª�zÕ¨ å ®Áå$zμ�¯²¶Õ¾ Å�  , ÛvÍ¢¶ ±t³²×¢¯²Ï»¯²¨Ð³�¨«Í¢ÔîzÕ³²¨­Í»Â°®qÅ�  , ¨Ð³Ëػ͢¨­±²®ÓÝÃå«{z¶ ®°èÕ®°¯ÈÀºÂ°×¢¯²èÕ®±²µ»®°À¿½Á³È³�¶�Âèн|±È®�±ð·Ë¶�¨«Íα²®¹ÔÁ®°¯ÅÏ»½ ¯Ò½ ¾¿®Ã±È®°¯Ò³½�z¨­±È³�)�ÔÁ®¹Íê×»³5+Ö½ÁÍ»¸ ±²µ¢® ÍÎ×»¾ ¬x®°¯ü¶Á¼�)²¯È½ ±²¨«¶ÁÍ»½Áª�Ï ¶Õ¨­Íαҳ5+�ª«ÀꨭͻÔ�¶ÁÍ¿±²µ»®ÂÃ×»¯²èÕ®ÁåЬ´¶Á±²µ °¶Áͻ°®°Ï�±Ò³�½ ¯È®º½Áª­ÔÕ®°¬¢¯Ò½ ¨Ð ½Á¬»³�±²¯Ò½ÁÂæ±È¨­¶ÕÍ»³ ¶ ¼´½ÁÍ»½ ª«¶ÁÔÕ¶Á×»³�±²¶ÕÏ ¶Õª­¶ÕÔÁ¨Ð°½ ª ±È®°¯È¾¿³¹åº§©®¹Íê×»³Ö¶ ¼�½í°ע¯²èÕ®¨Ð³�½ºÍ¢¶ÁÍ^� Í¢®¹ÔÕ½|±È¨­èÕ® ¨«Íα²®¹ÔÁ®°¯t¨«Í»¸�¨Ð°½ ±²¨«Í¢Ô¿±²µ»®B)ð±ð·t¨Ð³ð±È®¹¸�Í¢®Ó³²³,+º¶ ¼é±²µ¢® °ע¯ÈèÁ®��ü±²µ¢®�µ»¨­ÔÕµ¢®°¯�±Èµ¢®�ÔÁ®¹Íê×»³?zê±Èµ¢®�¾¿¶Á¯È®±ð·t¨Ð³ð±È®¹¸�±Èµ¢®ÆÂÃ×¢¯ÈèÁ®ÕåÎ�»¯²¶Õ¾ ±²µ¢®ïÏx¶Á¨«ÍÕ±¿¶ ¼ èΨ«®°· ¶ ¼�®¹³�±È½Á¬¢ª«¨«³²µ¢¨«Í¢Ô ¸¢¨«³�±È½ÁÍ»ÂÃ®í¶ ¼ °¶ê¸¢®¹³°zø±²µ¢®ï¬x®¹³�±¿Â°×¢¯²èÕ®¹³º½ ¯È®±²µ»®�ª­®Ó½Á³�±t±ð·t¨«³�±²®Ó¸í¶ÕÍ¢®¹³¹å � ¶|·Ë®¹èÁ®°¯´±È¶îÔÁ®Ã±�¾î½ÁÍÎÀɯȽ ±²¨«¶ÁÍ»½Áª�Ï ¶Õ¨­Íαȳ�¶ÁÍ¢®�Í¢®¹®¹¸¢³t±ð·t¨«³�±²®Ó¸ï°ע¯ÈèÁ®¹³¹å«{�µ¢¨Ð³�¼�¶Áª«ª«¶|·�³¼�¯È¶Á¾ ½ï¼�×¢Í ¸¢½ ¾¿®°Íαҽ ªü¯È®¹³²×¢ª­±Ö¨«Í�½ ª«ÔÁ®¹¬¢¯È½Á¨«ÂH� ÔÕ®°¶Õ¾º®°±²¯ÈÀbzxØ»¯Ò³ð±�¸�×»®¿±²¶ � ½Õ³²³²®î½ Í»¸ ¤ ®°¨«ª�z ½ Í»¸ ±Èµ¢®°Íþ¨«¾ºÏ»¯²¶|èÕ®¹¸¬êÀ���¯È¨­Í¢¼�®°ªÐ¸ ½ Í»¸ùk�ªÐ½Á¸�×�±Ò³°å£{�µ¢® ªÐ½|±²±²®¹¯�¬x¶Áעͻ¸ ³²½ À�³�±Èµ»½|± ±²µ¢®ºÍê×¢¾ ¬x®°¯ ¶ ¼ü¯Ò½|±È¨­¶ÕÍ»½ ªéÏ ¶Õ¨­Íαȳ�¨«³©½|±©¾¿¶Õ³�±�±²µ»®ÔÁ®¹Íê×»³¦±²¨«¾¿®¹³ Û � " á ß ÝæåY{�µ¢®�ÂÃ×»¯²èÕ®¹³¦×»³²®¹¸¿¬êÀ�±Èµ¢® x § Âö�¸�®Ó³ü½ ¯È®�±²µ»®�)�®?¦�½Á¾¿Ï¢ª­®Ó³5+Ö³²µ¢¶|·t¨«Í¢ÔÖ±²µ¢®�±²¨«ÔÁµÎ±²Í¢®Ó³²³ü¶ ¼±²µ»¨«³�¬ ¶Õעͻ¸�ål¢ Í»Âî ¶ÁÍ¢®ÖØ»Í ¸¢³�°ע¯²èÕ®¹³�¾î½|±ÒÂÒµ¢¨«Í¢Ô¿±²µ¢¨Ð³�¬x¶Á׻ͻ¸Øz�½î³�®ÓÂöÁÍ ¸½)�¼�עͻ¸¢½Á¾¿®°ÍαȽÁª7+¿¯È®¹³²×¢ª­±�¶ ¼ü½ ª«ÔÁ®¹¬¢¯È½RzÑêÍ¢¶|·tÍí½Õ³´±²µ¢®��t¨«®°¾î½ÁÍ¢Í^���t¶�Âҵ̱²µ»®°¶Á¯È®°¾Bz�¨Ð³�¨­ÍêèÕ¶ÁÑÁ®Ó¸î±È¶º³²µ¢¶|·�±Èµ»½|±�½ ª«½Á¯²ÔÕ® ¬ ½Á³²¨«³´¶ ¼�)�Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³5+ ®H¦�¨«³�±È³¶|èÁ®¹¯t±²µ»¨«³©ÂÃ×¢¯ÈèÁ®Õå ¤ ®b® ª­ª ÔÁ®°±�±²¶Ì±²µ¢¨Ð³©Ï»½ ¯²±�ªÐ½|±²®¹¯¹å��騫¯Ò³ð±©·Ë®}® ª«ªé³È½ Àï³²¶Á¾¿®°±²µ¢¨«Í¢ÔɽÁ¬ ¶Õ×�±©Â°×¢¯²èÕ®¹³�¶ ¼ü³�¾î½Áª­ª ÔÁ®¹ÍÎ× ³·t¨­±²µÆ¾î½ ÍêÀ̯ҽ|±²¨«¶ÁÍ ½ ª�Ï ¶Õ¨­Íαҳ°å

õ\� »¼»

Page 67: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

{�µ¢®îØ ¯È³�±�¼v½ ¾¿¨«ª­À ¶ ¼�ÂÃ×»¯²èÕ®¹³�¾¿®°®°±²¨«Í¢Ôڱȵ¢®,� ¯²¨«Í�¼�®°ªÐ¸���k�ªÐ½Á¸�×¢±È³�¬x¶Á׻ͻ¸�·´®°¯È® ¼�¶Õעͻ¸�¬êÀ�{t³ð¼v½Õ³�¾î½ ÍLz·k ª«½Õ¸�×�±È³½ Í ¸ [ ¨«Í¢ÑùÔÇßÕß?��Ö å x Í»½Áª­Àê침­Í¢Ô ±²µ¢®Ó³�®©ÂÃ×¢¯ÈèÁ®Ó³Å·�½Á³Ë³�¨«ÔÁÍ»¨ÇØ Â¹½ ÍᲪ«À¿µ»½ ¯Ò¸�å|�ê×¢¬»³²®°¯Î×¢®¹ÍᲪ«Àî¾ ×»Âҵ̾¿¶Õ¯²® ®°ª«®°¾¿®°ÍαȽÁ¯²À¼v½ ¾¿¨«ª­¨«®¹³¦·´®°¯È®t¸�¨Ð³²Â°¶|èÁ®°¯È®¹¸�¬ÎÀº§Ö½ ¯ÒÂèн ½ÁÍ»¸7�ê±²¨ÐÂҵձȮ°Í¢¶Á±²µBÔ ¡W� z ¡}¡ Ö å ¤ ®�¸�®¹³ÈÂïȨ­¬x®t½�¼v½Á¾¿¨­ª«À ¸�®¹èÁ®¹ª­¶ÕÏ ®Ó¸ ¬êÀ�±Èµ¢®°¾¬x®°ª«¶|·�åP � !D�#N é {£Æ!Î�6:��Ï|ÉßÕå ¤ ®�½Õ³²³²×¢¾¿® " 0 / ¼�¶Á¯�³²¶Á¾¿®ÖÏ¢¯²¨«¾¿®ÖÏ ¶|·´®°¯O0êå� ål{�µ¢® ÂÃ×¢¯ÈèÁ®Ó³ ½ ¯È® ¸�®Ó³²Â°¯²¨«¬x®¹¸ ¬êÀ � X á ß Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ª ®\¯Î×»½|±È¨­¶ÕÍ»³ ¶|èÁ®°¯ � X è ½Á¯²¨Ð½ ¬»ª­®Ó³: - ÷ �?�°� ÷z:   ÷|Þ - ÷ �?�?� ÷|Þ   å¡ ål{�µ¢®ÖÏ ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ª�®\¯Î×»½|±È¨­¶ÕÍ»³t½ ¯È®©±²µ¢®©¼�¶Áª«ª«¶|·t¨­Í¢Ô �

:(Ð u -æ Þ Ðæ a Þ æ Û�å ßÁ÷ �=�$� ÷ X Ý: æ : æ u - Þ æ Ûvå ßÁ÷ �$�$� ÷ X á ß Ý

x ¯²®¹ª«½ ±²¨«èÁ®¹ª­À̳²¨­¾¿Ï¢ª«®Ö¨­Í ¸�×»Âæ±È¨­èÕ®�½ ¯ÈÔÁ×¢¾¿®°Íαt³�µ»¶|·�³Å±Èµ»½|±�±Èµ¢®°¯È®�½ ¯È® ¯È¶Á×¢ÔÕµ¢ª«À "  à¯È½ ±²¨«¶ÁÍ»½ÁªxÏx¶Á¨«Íαȳ�Ûv¨­Íí±²µ¢¨Ð³ � X¸�¨«¾¿®°Í»³²¨­¶ÕÍ»½ ªé³�Ï»½ÕÂî ÝÅÔÕ¨­èꨫ͢Ժ±²µ¢® ³�®°± û å({�µ¢®�ÔÕ®°Íê×»³�¶ ¼ ±²µ»¨«³�°ע¯ÈèÁ®bz¢¸¢®Ã±²®¹¯²¾¿¨«Í¢®¹¸Æ¬êÀɽ¶�� °½Áª­ª«®¹¸½) � ×¢¯È·t¨Ç±Èìb® ³ÔÁ®¹Íê×»³�¼�¶Õ¯²¾ ×¢ªÐ½Å+î¨Ð³�±Èµ¢®°Í ®¹³�±È½Á¬¢ª­¨Ð³²µ¢®¹¸ ±²¶É¬x®¿½|± ¾¿¶Î³ð±�� û � ï Û � " á¡ßÓÝÃå9{é¶íÂÒµ»¶Î¶Î³�®�±²µ¢®º¯²¨«ÔÁµÎ±Ö³�Ï»½ÕÂî ¶ ¼ÅÏx¶Áª«ÀW�Í¢¶Õ¾º¨Ð½ ªÐ³´¼�¶Á¯�®¹Í»Âö�¸�¨«Í¢ÔRz�¶ÕÍ¢®©±²µ¢®¹ÍÆ×»³�®Ó³´±²µ¢®�Í»¶ ±²¨«¶ÁÍﶠ¼�)�¶Õ¯È¸�®¹¯,+ ¶ ¼¦½ Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª å ¤ ®}® ª«ª�¶Á¾¿¨­±t¨Ç±Ò³�¸�®ÃØ Í¢¨Ç±È¨­¶ÕÍÛv½Áª­¶ÕÍ¢Ô~·t¨­±²µ ³²¶~¾î½ ÍêÀþ¶ ±Èµ¢®°¯Ò³ÈÝ ¬¢×�±¿®H¦�Ï¢ªÐ½ ¨«Í ·tµ ½|±¿Ï¢¯²¶ÕÏ ®¹¯�±È¨­®Ó³ ¨­±î³²½ ±²¨Ð³ðØ»®Ó³?z˳�¨«Í»ÂÃ®í±²µ ½|±¿·t¨­ª«ª�¬ ®ï×»³²®Ã¼�×¢ªt¨«Íעͻ¸¢®°¯Ò³ð±Ò½ Í»¸�¨«Í¢Ô¿µ¢¶|· ±²¶¿·Ë¶Õ¯²ÑÉ·t¨Ç±Èµí±Èµ¢®�Âö�¸�®Ó³�Ûܼ�¶Õ¯�³�¶Õª­èꨫ͢Ôî³�¶Õ¾º®�½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾¿¨«Â�±È½Õ³�Ñ�³ÒÝæå{�µ¢®�¶Õ¯È¸�®¹¯�¶ ¼ ½¿Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª�¬x®°µ»½ èÕ®¹³�³²¨­¾¿¨«ª«½Á¯²ª«Àî±²¶î¸�®¹ÔÁ¯È®°® �

ñ ¶Á¯Ò¸�Û &§¹ a ¾ÒÑxÝ�m ¾î½3¦ ÿ ¶Õ¯È¸�Û ¹ Ýæ÷²¶Á¯Ò¸�ÛvÑxÝ���·tµ¢®¹¯²® & ÷�¾ �BÅ , åe�»×¢¯²±²µ¢®¹¯²¾¿¶Á¯È®bz»¶Á¯Ò¸�Û &§¹ a ¾ÒÑxÝ ¶Õ¯È¸�Û´Ñ ÝN�¨Ç¼§¾ËÒ � ½ Í ¸É¶Õ¯È¸�Û ¹ Ý + ¶Õ¯È¸�Û´Ñ ÝÃåñ ¶Á¯Ò¸�Û ¹ ç�ÑxÝ ¶Á¯Ò¸�Û ¹ Ý a ¶Õ¯È¸�Û´Ñ Ýñãú ¼ ¹ ¨«³�ì¹®°¯È¶º¶ÕÍí¶Õ¯È¸�Û ¹ Ý a ß©Ïx¶Á¨«Íαȳt¶ÕÍ û zê±²µ¢®¹Í ¹�Ó � ¶ÕÍ û å

¬´À¿±²µ¢®©Ï¢¯È¶ÁÏx®°¯²±²¨«®¹³´½ ¬x¶|èÁ®}zÕ¨­±´¨Ð³�Âê«®¹½Á¯Å±Èµ»½|±´±²µ¢®Ö³²®Ã±�¶ ¼zÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³Å¶Á¼z¶Á¯Ò¸�®°¯�½|±�¾¿¶Õ³�± ì ¼�¶Õ¯t½�èÁ®ÓÂæ±È¶Á¯�³�Ï»½ÕÂîÕå� ¶|·´®°èÕ®°¯�ע͢ª«¨«ÑÁ®Ö±²µ»®�°½Á³²®�¶ ¼¦×¢Í¢¨«è|½ ¯È¨«½ ±²®ÖÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª«³�¶|èÕ®°¯ÕÅ , z¢¶ÁÍ¢®�Í»®°®¹¸ïÍ¢¶Á±�µ»½ èÁ®ÖÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³�¶ ¼¦®°èÁ®¹¯²À¶Á¯Ò¸�®¹¯¹å {�µ¢®��t¨«®°¾î½ Í»Í^�2��¶êÂÒµ ±²µ¢®¹¶Á¯È®°¾ ³²µ¢¶|·�³?zŵ¢¶|·Ë®¹èÁ®¹¯�±²µ ½|±¿±²µ¢®¹¯²®Æ¸�¶ ®H¦�¨Ð³ð±¿Ï ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª«³ ¶ ¼Ö½ ª«ª´¬»×�±�Fè|½ ª«×¢®¹³�¶ ¼¦±²µ»® ¶Á¯Ò¸�®¹¯°z ·tµ¢®°¯È®�Fí¨Ð³t±Èµ¢® ÔÕ®°Íê×»³t¶Á¼ø±²µ¢®ºÂÃ×¢¯ÈèÁ®Õå�Ûv{�µ¢¨Ð³�¨Ð³�·tµêÀï·Ë® ª­¨«ÑÁ® °ע¯ÈèÁ®¹³�¶ ¼Å³²¾¿½Áª­ªéÔÁ®¹ÍÎ× ³ÈÝÃåx ϻϢª­Àꨫ͢Ô�±Èµ¢¨Ð³ü±Èµ¢®°¶Õ¯²®¹¾ ±È¶�±²µ»® ÂÃ×»¯²èÕ®¹³ü¶Á¼é§Ö½ ¯ÒÂèн�½ Í»¸��ᲨÐÂҵα²®°Í»¶ ±²µÉ¶ÁÍ¢®�Í»¶|· Ôծñҳü±Èµ¢®�¼v½Á¾º¨«ª«Àº¶Á¼ x §àÂö�¸�®Ó³½Á³t°ª«½Á¨­¾¿®Ó¸�å�êÏx®¹Â°¨ÇØ Â¹½ ª«ª­À}z ª­®°±éÊ � û �ìx®ü±Èµ¢®ÅÍê×¢¾ ¬ ®¹¯z¶Á¼ê¯Ò½|±È¨­¶ÕÍ»½ ªÁÏ ¶Õ¨­Íαȳé¶ÁÍֱȵ¢®Ë°ע¯ÈèÁ® û ÛÜØR¦ê®Ó¸�¶ÁÍ Âî " ½ÁÍ»¸ X ½Á¯²®øØR¦ê®Ó¸»Ýæ嬴ÀÖ±²µ¢®´¼v½ÕÂ汦±²µ»½ ±¦±²µ¢®Ó³�®�ÂÃ×¢¯ÈèÁ®Ó³z¾¿®¹®Ã±¦±²µ¢®�� ¯²¨«Í�¼�®¹ª«¸���k�ªÐ½Á¸¢×�±È³¦¬x¶Á×¢Í ¸Øz ·´®ËÔծñ¦±²µ»½ ±ø¨Ç±Ò³éÔÕ®°Íê×»³�F,m Ê ï Û � " áÉßÓÝæå�¢¶Õ¯©½ÁÍêÀï¸�¨Ð³�±È½ Í Âî Ï ½ ¯Ò½ ¾¿®Ã±È®°¯ ùîz�ª­®°±�Ô � ¬ ® ±²µ¢®º³�®°±©¶Á¼Å½ ª«ªéÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³�¶Á¼ü¶Á¯Ò¸�®°¯ ÊÚáãù»å9Ï�¶Á±²¨ÐÂî�±Èµ»½|±©±²µ»®®°è|½Áª­×»½ ±²¨«¶ÁÍ»³ ¶ ¼ËÏ ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ªÐ³ ¨­Í�Õ�ÔÕ¨­èÕ®¹³©½Éª«¨­Í»®¹½ ¯ÖÂö�¸�®º¶ ¼´¸�¨«³�±È½ÁÍ»Âîºù»åЬËÀƱȵ¢®§�t¨­®¹¾î½ Í¢Í^���t¶�ÂÒµ ±Èµ¢®°¶Õ¯²®¹¾Bz·´®©Ôծñt±Èµ»½|±�±²µ»¨«³�³²Ï»½ÕÂîֵ»½Á³t¸¢¨­¾¿®°Í ³�¨«¶ÁÍÚ½|±tª«®¹½Õ³ð±tÊÆá ù�á·F a ß�Þ Êíáþù�á Ê ï Û � " á ßÓÝæå ¤ ®�¶Á¬¢±È½ ¨«Í �

��� {�h»y|{�� ê��76¸ÆÖ��{Îy �äÄ hihg¹ ¶ Ä è hg¹é{ôO*P � sDO<�&É�% G3Id<<$3<HINTQ<�$3<H2 ZDG�c(<HIÎG�Ed0�Z:I ' �ª<�" X 032:4Ë<<$�<?INTZR03I[0��F<?>�<?I ä + ß á -¨ , ~Ø- X >�CD<?I[<�< )b' KN>�K7032 ' 2�\«2 ' >�<�EH0�� ' ;*T�GtE�"ô/t03INTB; ' 2:<�0�IFP�G\4b<HKªGtEaI[<?;=0�> ' $3<,4 ' K�>�0325P�< ä03254FI[0�>�< Ù Þëßüá ä�á -¨ , ~Ø- @ % M^IN>JCR<HI�0�VW<H25<HI[0�>�G�I9�F0�>�I '*) EHG3I£KNMRP]CB0ªP�G\4b<aP�0�2dÌ]<aP]G�2DKN>SINMRPH>�<�4 ' 2 «è¿Û�Êj© Ý> ' �F<\@

õ\� » õ

Page 68: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

« ¬®­°¯²±�³S´ ×

Ç��� �=5ê·¶ é u:h y sG� � �ãs Zv¸ �¤�°y3h?¹ w Z �¹s�h��º�\h è hg¹ésD�éu ��� {�h»y � ¢©Âñ²¶Õ¬ ®¹¯ ¡ z ���}� ß½b¾R¿�À�Á�Â+¾ÙØ

È <�P?>�M^I]<HI<Ä�Åù0}4°C^MÆ1îMR4}032 1ØPHI ' Ì�<iÄQ1^C ' <?2KÚ ' 2½Ûn2�V{é¶ê¸»½ À ·´®Å·t¨«ª­ªê¸�¨Ð³²Â°×»³È³�עϢÏx®°¯ ¬x¶Áעͻ¸»³z¶ÕÍ�±²µ¢®Ë¯È½ ±²®Ë¶ ¼»½ ÍêÀ ¼v½ ¾¿¨«ª­À�Âö�¸�®}z ÔÁ¨«èÁ®°Í�½�ª­¶|·´®°¯z¬ ¶Õעͻ¸�¶ÕÍ�¨Ç±Ò³z¯È®°ªÐ½|±È¨­èÕ®¸�¨Ð³ð±Ò½ Í»Â°®ÁåÕ�êÏ ®ÓÂè­Ø °½Áª­ª«Àï·Ë®�·t¨«ª­ªéÏ¢¯È®¹³²®°Íα�±²µ¢®a Ū­¶Á±²ÑꨫÍï¬x¶Á׻ͻ¸Ú½ Í»¸ï±Èµ¢® í ª«¨Ð½Á³t��¬�½Á³È³È½ ª«ÀÎÔÕ¶ ¬x¶Á×¢Í ¸¢³°å í ÍگȶÁ×�±È®·´®Ì·t¨­ª«ª�½ ªÐ³�¶ ®¹Í»ÂöÕ×¢Íα²®¹¯ ½ ¸�¨KÙ�®°¯È®°Íα ¬x¶Á×¢Í ¸Øzø°½ ª«ª«®¹¸þ±Èµ¢® Ê ¶Áµ¢Í ³�¶ÕÍ ¬x¶Á׻ͻ¸�å�{�µ»®Éע͢¨­¼�ÀꨭͻÔÚ±²µ¢®¹¾¿®É¼�¶Õ¯�±²µ»®ª«®¹Âæ±È×¢¯È®�¨«³´±Èµ»½|±�¶Á¼éØ Í»¸�¨«Í¢ÔîעϢÏx®°¯�¬x¶Á׻ͻ¸¢³t¶ÕÍɱȵ¢®�¯Ò½|±²®Ö¶Á¼¦Â°¶ê¸¢®¹³�¬êÀÉÔÕ®°¶Á¾¿®°±²¯È¨«ÂÖ½ ¯ÈÔÁ×»¾º®¹Íαȳ¹å ú ÍÆÏ»½Á¯�±È¨«Â°×¢ªÐ½ ¯\z·´®�·t¨­ª«ª ®°¾ ¬x®¹¸ � ½ ¾¿¾¿¨«Í¢Ôɳ²Ï»½Á°®�¨­Íαȶ í ׻°ª­¨Ð¸�®Ó½ Í ³²Ï»½Á°® ½ Í»¸Æ× ³�®�±Èµ¢® ®¹¾ ¬x®¹¸¢¸¢¨­Í¢Ôγ?zx¨«Í~Âöվ ¬¢¨«Í»½|±È¨­¶ÕÍÚ·t¨Ç±ÈµÔÁ®¹¶Á¾¿®Ã±È¯²¨ÐÂ�¼v½ÁÂæ±Ò³?z¢±²¶î¸�®°¯È¨«èÁ®Ö¶Á×¢¯tÏ»¯²¶ê¶ ¼v³¹å{�µ¢®Ó³�®©Í¢¶ ±È®¹³´¨«Í»Âê«×»¸�®©®H¦ê±²®¹Í»³²¨­¶ÕÍ»³´¶ ¼zè|½ ¯È¨«¶Á×»³ËÏ¢¯È¶Î¶Á¼v³ü±È¶ " � ½Á¯²À¿Â°½Õ³�®Ó³(� ±²µ»®©ª«®¹Âñ²×¢¯È®©¶ÁÍ¢ª«ÀÌÂö|èÕ®°¯È®¹¸º±²µ»®©¬»¨­Í»½Á¯²À°½Õ³�®Õå½{�µ»¯²¶Õ×¢ÔÁµ¢¶Õ×�±¦±²µ¢¨Ð³üª«®¹Âñ²×¢¯È®bzη´®t·t¨­ª«ª»×»³²®�Ù�±²¶ ¸�®¹Í¢¶ ±È®�±²µ¢®�¯È½ ±²®t¶ ¼�³²¶Á¾¿®�Û�׻ͻ³�Ïx®¹Â°¨ÇØ ®¹¸»Ýø¼v½ ¾¿¨­ª«Àº¶ ¼�Âö�¸�®Ó³½ Í ¸íä ±²¶Ì¸�®¹Í¢¶ ±È®©±²µ¢®�¯È®°ªÐ½|±È¨­èÕ®Ö¸¢¨«³�±È½ÁÍ»Âîֶ ¼é±²µ¢®�³È½ ¾¿®©¼v½ ¾¿¨«ª­ÀÕå

ܪñÇÍ ü6�ÞÝ�õl÷�÷ùø°ö�øߥ ��� � ø?ö�ø ÔYó�����õ@Ô ø°ö üÉÿ��@�°øH÷�õ@��ö Ô½ó�����õ@Ô

{é¶Ì¾¿¶ ±²¨«è|½|±È®�¶Á×¢¯�Ø»¯È³�±�¬x¶Á×¢Í ¸Øz ª«®Ã±©×»³�¯È®¹Â¹½ ª«ª�¶Á×»¯ ÂÃ×»¯²¯È®°Íα�³�±È½|±È®�¶ ¼øÑêÍ¢¶|·tª«®¹¸�ÔÕ®bz�¼�¶Õ¯�¬¢¨«Í»½Á¯²ÀÆÂö�¸�®Ó³°åq¢ ÍƱ²µ»®¶ÁÍ»®�µ»½ Í»¸Æ·´®�µ»½ èÕ®Ö±²µ¢®7�ꨭͻÔÁª«®Ã±²¶ÕÍÚ½ Í»¸ � ½ ¾¿¾¿¨­Í¢ÔÉעϢÏx®°¯�¬x¶Á׻ͻ¸¢³�¶ÕÍ Âö�¸�®Ó³?z¢·t¨­±²µ ±²µ¢®�ªÐ½|±²±²®¹¯ ¸�¶Õ¾º¨«Í»½ ±²¨«Í¢Ô±²µ»®¿¼�¶Á¯È¾º®¹¯�½ Í»¸ ³�µ»¶|·t¨­Í¢ÔÚÙ m�ß©á âãÛ ä ï � ÝÃåª{�µ¢®î¬ ®Ó³ð±�®?¦ê¨Ð³�±²®°Í Â²®Ó³�×»ªÇ±\z�±²µ»®É§©¨­¬x®°¯²±t��kü½ ¯Ò³�µ ½ ¾¿¶|è�Û §£k©Ý¬x¶Áעͻ¸izê³²µ¢¶|·�³ü±²µ¢®¹¯²®�®?¦�¨«³�±È³´½Ö¼v½ ¾¿¨«ª­À¿·t¨­±²µïÙ ÞëßøáÆâãÛ ä Ýæå|�¢¶Õ¯Ë½ ÍêÀ¿ä 8 � zÕ±²µ»®�¬x¶Áעͻ¸»³Ë½Á¯²®t¼v½Á¯´½ ·�½ À�¼�¯È¶Á¾®¹½ÕÂÒµ ¶ ±Èµ¢®°¯Óå � ¶|·´®°èÁ®¹¯�±È¶ÉÔÁ®°±©½�¯Õ× ½ ª«¨Ç±Ò½|±²¨«èÁ®º³�®¹Í»³²® ¶ ¼Å±²µ¢®ºÔÕ½ÁÏizx°¶ÁÍ»³²¨Ð¸�®°¯ ±²µ¢®ºªÐ½ ¯ÈÔÁ®¹³�± ¸�¨Ð³�±È½ Í Âî�±Èµ»½|±©±²µ»®¹³²®¬x¶Áעͻ¸»³º³²×¢ÔÕÔÁ®¹³�±º½Á¯²®É¼�®¹½Õ³�¨«¬¢ª«®Ì¼�¶Á¯î°¶ê¸¢®¹³ ¶ ¼�Ïx¶Õ³²¨Ç±È¨­èծɯҽ|±È®Áå {�µ¢® � ½ ¾¿¾¿¨«Í¢Ô ¬x¶Á׻ͻ¸ ¯È×¢ª«®¹³ ¶Á×�±î½ ¯È®°ªÐ½|±È¨­èÕ®¸�¨Ð³ð±Ò½ Í»Â°®É¶Á¼ ß̼�¶Õ¯¿Â°¶�¸�®¹³ ¶ ¼�Ïx¶Õ³²¨­±²¨«èÁ®É¯Ò½|±È®Áå"¢ Í¢®É±²µ¢®ï¶ ±Èµ¢®°¯ºµ»½ Í ¸Øzø±²µ»®Æ§£k¤¬ ¶Õעͻ¸ ¶ÁÍ¢ª«À ػͻ¸¢³¿Â°¶ê¸¢®¹³ ¶ ¼Ïx¶Õ³²¨Ç±È¨­èծ̯Ƚ ±²®Ì·t¨­±²µ ¯²®¹ª«½ ±²¨«èÁ®Ì¸�¨Ð³ð±Ò½ Í»Â°®ÉÂ꫶ճ²®î±È¶ -/ å'U˪­®Ó½ ¯Èª­À~±²µ¢®¹¯²®í¨«³ ½ù¯Î×»½ ª«¨Ç±Ò½|±È¨­èÕ®ÌÔÕ½ÁÏ�µ¢®°¯È®*z ½ÁÍ»¸þ·´®½Á¸»¸�¯²®Ó³²³Ë±Èµ¢¨«³�ÔÕ½ ÏíØ»¯Ò³ð±Óåú ±�¨Ð³�¯²®Ó½Á³²¶ÁÍ»½Á¬¢ª­À¿®Ó½Á³²Àî±²¶¿ÔÁ×»®¹³È³�·tµ¢¨«Âҵﶠ¼é±²µ¢®Ó³�®�¬x¶Á׻ͻ¸¢³t¨Ð³tÂ꫶ճ²®°¯´±²¶º±Èµ¢®Ö±²¯È×�±²µzåe¢ èÁ®°¯t½º¬¢¨«Í»½ ¯ÈÀɽÁª­Ï¢µ ½ ¬x®Ã±°z¯Ò½ Í»¸�¶Õ¾ë·´¶Á¯Ò¸¢³�µ ½ èÁ®Å½�¯²®¹ª«½ ±²¨«èÁ®ü¸�¨Ð³ð±Ò½ Í»Â°®Å¶Á¼ -/ ¼�¯È¶Á¾ ®¹½ÕÂÒµ�¶ ±²µ»®°¯¦½ Í»¸Ö¨­±¦³²®°®¹¾î³L¯Î×¢¨­±²®Å¨«¾¿Ï ¶Î³²³²¨«¬¢ª­®Å±²¶©ÂöÁÍ ³ð±È¯²×»ÂñÂö�¸�®Ó³ø·t¨­±²µÌ¬x®Ã±²±²®°¯´¸�¨Ð³ð±Ò½ Í»Â°®ÁåY{�µ¢® � ½Á¾¿¾º¨«Í¢Ô�¬x¶Á׻ͻ¸¿¶ÁÍ¿±Èµ¢®�¶ ±Èµ¢®°¯Ë³�®¹®°¾î³«¯Î×¢¨­±²®�·´®¹½ÁÑ ½ ¯È¶Á׻ͻ¸ ±²µ¢®Ó³�®�Ï ½ ¯²±È³¹å¤ ®qáð×»³�±�Í¢®°®Ó¸~½É·´½ Àï±²¶í¼�¶Á¯È¾î½ ª«¨­ì¹® ¶Õ×¢¯ ¨«Íα²×¢¨­±²¨«¶ÁÍLz�½ Í»¸~·Ë®º·t¨­ª«ªø¸�¶Æ³�¶íÔÁ®°¶Õ¾¿®Ã±²¯È¨Ð°½ ª«ª«Àbzx¬ÎÀÚ®¹¾ ¬x®¹¸¢¸¢¨­Í¢Ôí±²µ»®¬¢¨«Í»½ ¯ÈÀ � ½ ¾¿¾¿¨­Í¢Ôϻ½Á°®Ö¨­ÍᲶ í ×»Âꫨи�®¹½ÁÍﳲϻ½Á°®Áå ¤ ®�¸�®°èÕ®°ª«¶ÁÏ̱ȵ¢®�®°¾ ¬ ®Ó¸¢¸�¨«Í¢Ôî¬x®°ª«¶|·�å

�3� » �

Page 69: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

�ï{���� s��¹s�h��Û z�v�<ÆpP£�KmÅ{ô¹�¹ sG� u�É A:CR<,<?�FÌ�<�4b4 ' 2WVaE�M^2:P?> ' G�2 í ¾ ¬x®¹¸ �zÿ � ÷°ß��ÐÙáà(X �ª0]Z}Z ' 2�V�Ì ' >vK7>�G�>�CD<I[<�03;UK ' K�V ' $3<H2äÌHT í ¾ ¬x®¹¸zÛ � Ý a ß 0�2:4 í ¾ ¬x®¹¸�Û�ßÓÝ á�ß @ % G3I Ê Þ ßbX >�CD< Ê /t4 ' �ª<H2RK ' G�2:0�;Õ<?�FÌ�<�4b4 ' 2WVE�M^2:P?> ' G32�< ) >�<?2:43K£>�CD<7<?�FÌ�<�4b4 ' 2WVB0bÌ�GA$3< X c ' >JC í ¾ ¬ ®Ó¸ �¢ÿ � ÷¹ß�� � Ùâà � Ì�< ' 2WV7V ' $3<H2ÎÌHT

í ¾ ¬x®¹¸�Û ( · - ÷ �°�?� ÷ · ��* Ý �(ví ¾ ¬x®¹¸�Û · - ÝÃ÷ �?�°� ÷ í ¾ ¬x®¹¸�Û · � Ý * �{�µ¢® Ï¢¯²¶ÕÏ ®¹¯�±ðÀº¶ ¼�±Èµ¢¨Ð³Ë®¹¾ ¬x®¹¸¢¸¢¨­Í¢Ô ¨«³Å±²µ ½|± � ½ ¾¿¾¿¨­Í»Ôº¸�¨Ð³�±È½ Í Â˽ ¯È®�Ï¢¯È®¹³²®°¯ÈèÁ®Ó¸î½Á³ í ×»Âꫨи�®¹½ÁÍɸ�¨Ð³ð±Ò½ Í»Â°®¹³°zÕ¶Õ¯¨«Í飼͢͢®¹¯tÏ¢¯È¶ê¸¢×»Âæ±Ò³°å ¤ ®�¯²®Ó°½Áª­ª�³²¶Á¾¿®©¼v½ ¾¿¨­ª«¨Ð½ ¯�¸�®°Ø»Í¢¨­±²¨«¶ÁÍ»³�¼�¶Õ¯tèÁ®ÓÂæ±²¶Õ¯�³�Ï ½ÁÂîӳ´¶|èÁ®°¯´±Èµ¢®�¯²®Ó½ ªÐ³°å

�ï{���� s��¹s�h��Û z���É% G�I $�<�P?>�G�I�K �ø÷[�&�4à � X >�CD< ' 2R2:<?I�Z:I[G\43MRP?>£Ì�<?>�c(<�<?2 � 03254 �|X 4b<?2:G3>�<�4 ( �ø÷t� * X <�ã?MR03; KH �æKJ - : æ Þ æ @7A5CD<925G3IN� G�E90�$3<]P?>�G3I �YX 4}<H25G3>�<]4*ä � ä X ' KDå ( �ø÷t� * X A5CR<�ænMRP?; ' 4b<�032�4 ' KN>�0�2:P�<�Ì�<H>Sc(<�<H2 � 032:4�|X ' K9K ' �qZ:;UT�>�CD<a2:G�IN� GtE �Æá�� @{�µ¢®Ö¼�¶Õª­ª«¶|·t¨­Í»Ô Ï¢¯È¶ÁÏx¶Õ³²¨­±²¨«¶ÁÍɪ«¨Ð³ð±Ò³�³�¶Õ¾¿®©¶Á¼z±Èµ¢®�®°ª«®°¾¿®°Íαҽ ¯ÈÀÌÏ¢¯È¶ÁÏx®°¯²±²¨«®¹³´¶ ¼¦¶Á×¢¯�®¹¾ ¬x®¹¸¢¸�¨«Í¢Ô¿¼�¯È¶Á¾ � ½ ¾¿¾¿¨­Í»Ô±²¶ í ×»Âꫨ«¸¢®¹½ ÍƳ²Ï»½Á°®¹³¹åY{�µ»®�Ï¢¯²¶ê¶Á¼é¨Ð³�®¹½Á³²¨«ª­ÀÌèÕ®°¯È¨ÇØ ®¹¸É¼�¯²¶Õ¾ ±²µ¢®�¸¢®Ãػ͢¨­±²¨«¶ÁÍ ³�½ Í»¸íµ¢®¹Í»Âî�¶Õ¾º¨­±�±È®¹¸�å

gÖy3h+Neh�OÓs��ÓsvhP� z�76ý% G3I m ÷ Z � ÿ � ÷¹ß��\�RX >JCR<�E�M^25PH> ' G32 í ¾ ¬ ®Ó¸ K?03> ' Kn\e<HK (ví ¾ ¬x®¹¸�Û m ÝÃ÷ í ¾ ¬ ®Ó¸�Û Z Ý * Ê~á�  ïÛ m ÷ Z Ý�X c·CD<?I[<  ïÛzç­÷Çç Ý ' K�>JCR<DçÐ03�7� ' 2�V�4 ' K�>�0325P�<(E�M^25PH> ' G325@#çÐ<H25P�< X c(<9CD00$�<ä í ¾ ¬x®¹¸�Û m Ý ä / Êø÷ 0�2:42ä í ¾ ¬ ®Ó¸�Û m ݦá í ¾ ¬x®¹¸�Û Z Ý ä / �W ïÛ m ÷ Z Ý �{�µ¢®º®°¾ ¬ ®Ó¸¢¸�¨«Í¢ÔÚ½ ¬x¶|èÁ®�±Èµê×»³Ö½ ª«ª­¶|·�³ ×»³ ±²¶ï±²¯Ò½ Í ³ð¼�¶Õ¯²¾ ¯Î×¢®¹³�±²¨«¶ÁÍ ³©½Á¬ ¶Õ×�± � ½ ¾¿¾¿¨«Í¢Ôﳲϻ½ÕÂ­ÍᲶB¯Î×¢®¹³�±²¨«¶ÁÍ ³½ ¬x¶Á×¢± í ×»Âꫨи�®¹½ÁÍí³²Ï»½Á°®Áå ¤ ®�·t¨«ª«ª�±²µ¢®¹ÍƽÁÏ¢Ïx®¹½ ª�±È¶¿¶Á×¢¯�ÔÁ®¹¶Á¾¿®Ã±È¯²¨Ð ¨­Íα²×»¨Ç±È¨­¶ÕÍí¬»½ÕÂÒÑÁ®Ó¸Ì¬êÀ̪«¨­Í¢®Ó½ ¯t½ ª«ÔÁ®¹¬¢¯Ò½�¼�¶Õ¯Ï¢¯È¶ê¶ ¼v³�¶ ¼¦Âö�¸�¨«Í¢Ô�� ±²µ»®°¶Á¯È®Ã±È¨«ÂÖ³�±È½ ±²®°¾¿®¹ÍÕ±Ò³°å

ܪñ4ö è úBõM�°����Ò§é,ø?öêÝ×�7ÿ�öB÷��� {�h»y|{��ù z�=#±Æ�g é h+�Çå�sG�¸m(hxw��R¹ëΩ P=�ÏÖÉì @���2 Û�Êø÷�Â�÷²ùêÝ / P]G\4b<ac ' >�C ùîÞ � / CD03KÐ03>e�FG3K�> � Ê P�G\4b<?c(G3I[43KH@ ë 2�G3>�CD<?I�c(G�I[4�K X½Â�m ª«¶ÁÔ � Ê @í @ ë E�032 Û�Êø÷�Â�÷²ùêÝ / P]G\4b<7< )b' KN>�K X >JCR<H2 Â�m Êíá � ù a ª«¶ÁÔxÛ��ÎùÎÝ @

gÖy3hih:j {�µ¢® Ø»¯Ò³ð±ÖÏ»½Á¯�±©¨«³ ±²µ»® µ»½Á¯È¸¢®°¯©Ï»½ ¯²±©½ÁÍ»¸Ú±Èµ¢®º³²®¹Â°¶ÁÍ»¸~Ï»½ ¯²±�¼�¶Õª­ª«¶|·�³ ®¹½Á³²¨«ª­ÀƬêÀÚ×»³²¨­Í¢Ôí¯²®Ó³ð±È¯²¨ÐÂæ±È¨­¶ÕÍ»³¹å¤ ®�³ð±Ò½ ¯²±�·t¨­±²µï±Èµ¢®ÖØ»¯Ò³ð±tÏ»½Á¯�±Óåç�®°± Z - ÷ �?�?� ÷ Z   ¬x®©½Áª­ª ±²µ»®©Â°¶ê¸¢®°·´¶Á¯Ò¸¢³ü¶Á¼�±²µ¢®ºÛ�Êø÷�Â�÷²ùêÝ / Âö�¸�®Õåøç�®Ã±n� - ÷ �?�°� ÷t�   ¬ ® ±²µ»®°¨«¯´®¹¾ ¬x®¹¸¢¸¢¨­Í¢Ôγ?zê¨ å ®Õå=z� æ �í ¾ ¬x®¹¸�Û Z æ Ýæåe¬´À� ü¯È¶ÁÏx¶Õ³²¨Ç±È¨­¶ÕÍ��»å ¡ z�·Ë®�µ»½ èÕ®©±²µ»½ ±�±²µ¢®�¨«Í¢Í¢®¹¯�Ï¢¯È¶�¸�×»Âæ±�¬x®Ã±ð·´®°®¹Í�� æ ½ Í ¸�� M z»¼�¶Á¯låqÒ V z¨Ð³�®°¯Î×»½Áªü±È¶ Ê~á �  ïÛ Z æ ÷ Z M ÝFm � ¼�¯È¶Á¾ ±²µ¢®É¼v½ÁÂñ�±²µ»½ ± ±Èµ¢®ÉÂö�¸�®Éµ»½Á³ ¸�¨«³�±È½ÁÍ»ÂîíùãÞ Ê ï � å ú Íãçz®°¾¿¾î½ù�¢å »·´®Ö³²µ¢¶|· ±²µ»½ ±�¨­ÍBà � ±²µ¢®¹¯²®�¹½ ÍƬ ®�½ ±�¾¿¶Õ³�± � Ê~èÕ®¹Âñ²¶Á¯Ò³�³�× ÂÒµí±Èµ»½|±�®¹èÁ®¹¯²ÀîÏ»½Á¨­¯�µ»½Á³t½ÁÍíÍ¢¶ÕÍ^� Ï ¶Î³�¨­±²¨«èÁ®Ö¨«Í¢Í¢®°¯Ï¢¯È¶�¸�×»Âæ±Óå«{�µ¢®ÖØ»¯Ò³ð±tÏ»½Á¯�±t¶Á¼é±Èµ¢®Ö±²µ¢®¹¶Á¯È®°¾ ¼�¶Õª­ª«¶|·�³¹å{é¶ã³�®¹®í±Èµ¢® ³²®¹ÂöÕÍ»¸ Ï»½ ¯²±°z´ª«®Ã±Ì×»³î·t¯È¨­±²®ÆÊ � ù a �ï½ÁÍ»¸ ³�×¢Ï»Ï ¶Î³�®d� ¨«³É½ ÍàÛ�Êø÷]Â�÷²ùêÝ / °¶ê¸¢®Áå {�µ¢®¹Í ¬êÀ¯È®¹³�±²¯È¨«Âñ²¨«Í¢Ô�� ±²¶ï±²µ¢®º¾¿¶Õ³�±�ÂöÁ¾¿¾¿¶ÁÍ»ª­ÀÚ¶�°°ע¯È¨­Í¢ÔíÏ»½|±²±²®¹¯²Í ¨­Í ±²µ¢®ºØ»¯Ò³�±D� °¶ê¶Á¯Ò¸�¨­Í ½|±²®Ó³ ½ÁÍ»¸ ¸�®°ª«®Ã±È¨­Í¢Ôí±²µ»®¹³²®Âöê¶Õ¯È¸�¨«Í»½ ±²®¹³°zηˮ©ÔÁ®°±t½ïÛ � ù»÷�Â�á�� ÷ÈùÎÝ / °¶�¸�®Áå|¬´Àî±²µ»®�Ø»¯Ò³�±�Ï ½ ¯²±´¶Á¼�±²µ¢®©±Èµ¢®°¶Õ¯²®¹¾�zê·´® µ ½ èÁ®£Â�áB�9m ª«¶ÁÔ�Û��ÕùêÝæ嬴®Ã¼�¶Õ¯²®�³ð±Ò½|±È¨­Í¢Ô©¶Á¯¦Ï¢¯È¶|èꨭͻÔ�±Èµ¢®tÂïȨDZȨ«Â¹½ ª�ç�®¹¾º¾î½9�¢å » z|·´®�³ð±Ò½|±²®´±Èµ¢®t½Á³²Àξ¿Ï�±È¶ ±È¨«ÂËèÁ®¹¯È³²¨­¶ÕÍ ¶Á¼: üª«¶ ±ÈÑꨭÍi® ³ ¬ ¶Õעͻ¸�å

�3� » Í

Page 70: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

è h»y3h évé !�y � z�Ð}É% G�I7032îTqEH03� ' ;UT�G�E7Ì ' 2503INT�P]G\4b<HK Ä c ' >�CùI]03>�< Ù 0�2:4�I[<?;=03> ' $3<ª4 ' KN>�0�2:P�< äWX ' > ' Ka>�CD<FP�0�K?<>�CD03> Ùým ßtá � ä @¤ ®�Í¢¶|· ¾¿¶|èÁ®©¶ÁÍï±È¶ºÏ»¯²¶|èꨫ͢Ժçz®°¾¿¾î½ª�¢å » z

ܪñ�- �ôõQ��� õ�ÒRÑ«ø����Ô�Ô½õ@ÑRÒYø<�Ðö�Ô�î�ï"ø?öBõ@��ÑÒ®����<øaõ�Ý�Ñ¥��ø<�Ûó�Ñ¥�b��0Ô¢ ×¢¯´Ø»¯Ò³ð±�ÔÁ¶Î½ ªxµ¢®°¯È®�¨Ð³´±²¶ºÏ¢¯È¶|èÁ®©½�ÔÁ®¹¶Á¾¿®Ã±È¯²¨ÐÂ�¼v½ÁÂæ± � ú ÍÉÊ ¸¢¨­¾¿®°Í ³�¨«¶ÁÍ»³Ë±Èµ¢®°¯È® ®?¦�¨«³�±�½ ±´¾¿¶Î³ð± � Ê èÕ®¹Âñ²¶Á¯Ò³Å±²µ»½ ±Ï»½Á¨­¯È·t¨«³²® ³²×¢¬�±È®°Í»¸ ½ Í ½ Í¢ÔÕª­® ¶ ¼Ë½ ±©ª«®¹½Õ³ð± = / ½ ± ±Èµ¢®º¶Á¯È¨­ÔÕ¨­Í�å ¤ ®¿³ð±Ò½ ¯²±©·t¨­±²µ ½ Í~¨«Íα²×¢¨­±²¨«èÁ®}z�¨­Í ¸�×»Âæ±È¨­èÕ®¿Ï¢¯²¶ê¶Á¼ðå� ¶|·´®°èÕ®°¯�±²µ¢®ºÏ¢¯È¶Î¶Á¼Ë½ÁÂñ²×»½Áª­ª«ÀÆ×»³²®¹³Ö½î¼v½Á¨­¯Ö¬¢¨­±©¶Á¼Å¨«ÍÕ±È×¢¨­±²¨«¶ÁÍ ½Á¬ ¶Õ×�± í ׻°ª­¨Ð¸�®¹½ÁÍ ³²Ï»½Á°®¹³�±²µ»½ ±©·´® µ ½ èÁ®°ÍL® ±îÛ�¶Õ¯·´¶ÁÍi® ±ÒÝËÏ¢¯È¶|èÁ®Õå ¤ ®�·t¨­ª«ª�±Èµ¢®°ÍïÔÁ¨«èÁ®�½ Íƽ ª­±²®¹¯²Í ½|±²®}zꪭ¨«Í¢®¹½Á¯t� ½ ª«ÔÁ®¹¬¢¯Ò½ ¨ÐÂ�Ï¢¯È¶ê¶ ¼z±Èµ»½|±t¶ÕÍ¢ª­ÀÉ×»³�®Ó³´±²µ¢®Ö¼v½ÕÂæ±�±²µ ½|±t±²µ»®Í¢¶Õ¯²¾ ¶ ¼z½�èÕ®¹Âñ²¶Á¯Å¨«³ËÍ¢¶ÁÍD� Í¢®¹ÔÕ½ ±²¨«èÁ®bzÕ½ Í»¸¿±Èµ»½|±�½ ÍêÀºÊ a ß�èÁ®¹Âñ²¶Õ¯È³ø¨«ÍÌÊ ¸�¨«¾¿®°Í»³²¨«¶ÁÍ»³Ë½ ¯È®�ª­¨«Í¢®Ó½ ¯Èª­Àº¸�®°Ïx®°Í»¸¢®°Íα¹å¬´®Ã¼�¶Õ¯²®¿Ï¢¯È¶|èꨭ͢Ôï±Èµ¢®Ìª«®°¾¿¾î½Dz ª­®°±�×»³ ³²®°®î·tµêÀ~¨­±�¨Ð³�Ï¢¯È¶|èꨭ͢Ôí±²µ»®Ì¯²¨«ÔÁµÎ±�¼v½ÕÂæ±¹å ¤ ®í½ ª«¯²®Ó½Á¸�À ÑêÍ¢¶|· ±²µ»½ ±�±²µ»®� ½Õ¸¢½ ¾î½Á¯È¸�°¶ê¸¢®Ì¾î½|±ÈÂÒµ»®¹³�±Èµ¢®� Ū­¶Á±²ÑꨫÍ�¬ ¶Õעͻ¸�Ûv¶Á¯�±Èµ¢®ÌØ ¯È³�± Ï»½Á¯�± ¶ ¼�¨­±ÒÝ�½ÁÍ»¸ã³²¶ ¨­±È³ ®°¾ ¬x®¹¸»¸�¨­Í»Ô~³�µ»¶Á×¢ªÐ¸¾î½|±ÒÂÒµþ±²µ¢®Ìª«®°¾¿¾î½Ú¬x®°ª«¶|· ±È¨­ÔյᲪ«ÀÁå�¬´×�± ·´®Ì°½ Íã°¶Á¾¿®î×¢Ï�·t¨­±²µ ½Ú³²¨«¾ºÏ»ª­®¹¯ ®H¦¢½Á¾ºÏ»ª­® ÛvÔÁ®°¶Õ¾¿®Ã±²¯È¨Ð°½ ª«ª«À ±²µ»®³È½ ¾¿®bz�½ÁÂñ²×»½Áª­ª«À�� Ý ·tµ¢¨ÐÂÒµí³²µ¢¶|·�³Ë±²µ ½|±�±²µ¢®Öª«®°¾¿¾î½º¨«³Ë±²¨«ÔÁµÎ±Óå«{é½ÁÑÁ®£� - ÷ �°�?� ÷[� � ±È¶ ¬x®Ö±²µ¢®Öעͻ¨Ç±tèÁ®ÓÂæ±È¶Á¯Ò³Ë½Áª­¶ÕÍ¢Ô±²µ»®�Âöê¶Á¯Ò¸�¨«Í»½|±È®´½�¦ê®Ó³?z ½ÁÍ»¸ ª­®°±«� � u æ á�� æ ¼�¶Á¯|å«�1Ô Ê5Ö åY{�µ¢¨Ð³¦ÔÁ¨«èÁ®Ó³ � ÊÉÍ¢¶ÕÍ^� ì°®°¯È¶�èÕ®¹Âñ²¶Á¯Ò³é±²µ»½ ±Å½ ¯È®Ë¾ ×�±²× ½ ª«ª­À½|±�½ÁÍƽÁÍ¢ÔÁª«®Ö¶ ¼¦½|±�ª«®¹½Á³�± 9 ï � å�Å{�� �"!· ���Ç�ë E � - ÷ �°�?� ÷[�   ��à � 03I]<F2:G�2+/Dâ\<HI]G�0�2:4�K?03> ' K�E�T ( � æ ÷[� M * m � EHG�IF<<$�<?INT å�Ò V �äÔ X Ö�X >�CD<?2X m � Ê @gÖy3hih:j ¤ ® Ï»¯²¶|èÕ®�±²µ¢®¿ª«®°¾¿¾î½É¬êÀƨ«Í»¸�×»Âñ²¨«¶ÁÍ~¶ÕÍ~Êøå ¤ ¨­±²µ¢¶Õ×�±�ª­¶Î³²³ ¶ ¼üÔÕ®°Í¢®¹¯È½Áª­¨­±ðÀÆ·Ë® ¾î½ À ½Á³È³�×¢¾¿® ±²µ»½ ±±²µ»®ºèÕ®¹Âñ²¶Á¯9�   ¨Ð³©±²µ¢®¿×¢Í»¨Ç±�èÕ®¹Âæ±È¶Á¯ ( ßÕ÷ � ÷ �?�°� ÷ � * åíÛ�{�µ¢®º¼v½ÁÂæ±Ö±Èµ»½|±Ö±²µ»¨«³�½Õ³²³²×¢¾¿Ï�±È¨­¶ÕÍ ¼�¶Áª«ª«¶|·�³ ·t¨­±²µ»¶Á×�±�ª«¶Õ³È³¶ ¼ËÔÁ®°Í»®°¯Ò½ ª«¨Ç±ðÀ飼³©¨«Íα²×¢¨­±²¨«èÁ®¹ª­ÀÚ¶Õ¬Îèꨫ¶Á×»³°zx¬¢×�±�·Ë¶Õ×¢ªÐ¸Ú¯²®\¯Î×¢¨­¯È® ³²¶Á¾¿® ·Ë¶Õ¯²Ñƨ­¼Å·Ë®º¸�®¹Â°¨«¸¢®¹¸~±²¶ÉÏ»¯²¶|èÕ®�¨Ç±�� Ý ¤ ¯È¨Ç±È®� æ ( & æ ÷[� æ * zü·tµ¢®¹¯²®�� æ �Íà � ~i- å1�ꨫͻÂîí·Ë®íÑêÍ¢¶|· ±²µ»½ ±º½Áª­ª´¶ ±Èµ¢®°¯ºèÁ®ÓÂæ±²¶Õ¯È³�µ»½ èÁ®É½~Í¢¶ÁÍD� Ïx¶Õ³²¨Ç±È¨­èծ̨«Í¢Í¢®°¯Ï¢¯È¶�¸�×»Âæ±t·t¨­±²µB�   z�·Ë®©Ø»Í ¸É±Èµ»½|± & æL�( � æ ÷t�  �* m � å ú ±t¼�¶Áª«ª­¶|·�³Ë±²µ ½|±t¼�¶Á¯�¸¢¨«³�±²¨«Í»Âæ±låÒ÷ V �1Ô X á ßHÖ�z�·Ë®Öµ»½ èÕ®

( � æ ÷t� M * �( � æ ÷t� M * á & æ & M m ( � æ ÷[� M * m � ��ê¶ ·Ë®íµ»½ èÁ® � X áàßÉèÕ®¹Âæ±È¶Á¯Ò³�¨«ÍãÊþáëßï¸�¨«¾º®¹Í»³²¨­¶ÕÍ»³?zü½Õ³ ³²¶~·´®í³²µ¢¶Õ×¢ª«¸ã¬ ®Æ½ ¬¢ª«®Ì±È¶ ½ÁϢϢª«À ±Èµ¢®ï¨­Í»¸¢×»Âæ±È¨­èÕ®µêÀêÏ ¶Á±²µ¢®Ó³�¨Ð³�z ¯²¨«ÔÁµÎ±�� ¤ ®°ª«ª�z�±²µ»½ ±Ö·´¶Á×»ª«¸ ¬ ®º±È¶Î¶Æ³�±²¯È¶ÁÍ¢Ôƽ Í»¸ ·´¶Á×¢ªÐ¸ Àꨫ®°ªÐ¸ X m Ê�z ½í¬¢¨­±�¬ ®°±�±²®¹¯Ö±²µ»½Áͳ²¶Á¾¿®Ö¶ ¼z±Èµ¢®�®H¦¢½Á¾ºÏ»ª­®Ó³�·Ë®Öµ»½ èÕ®Áå ¤ µêÀɸ�¶ê®¹³´±Èµ¢¨«³�µ»½ Ï¢Ïx®°Ízå ¤ ®¹ª­ªSz�±²µ»®�¨­Í»¸¢×»Âæ±È¨­èÕ®�µÎÀêÏx¶ ±Èµ¢®¹³²¨«³t½Õ³²³²×¢¾¿®¹³n� æ ® ³½ ¯È®ÖÍ¢¶ÁÍD� ì¹®°¯È¶Rz�½ Í»¸ï·´®�¸�¨«¸¢Íi® ± Ï¢¯²¶|èÕ®�±Èµ¢¨Ð³tÀÁ®°±¹åe�궺±È¶ÌÂöÁ¾¿Ï¢ª«®Ã±È®Ö±²µ¢®�ª«®°¾¿¾î½Dz»·Ë®ÖÍ¢¶Á±²®Ö±²µ ½|±�½|±�¾¿¶Î³ð±�¶ÕÍ¢®Ö¶ ¼±²µ»®�� æ ® ³�¾î½ Àí¬ ®�ì¹®°¯È¶»å©Û ú ¼ø±ð·´¶Rz»³È½ À,� - ½ÁÍ»¸B� / ½Á¯²®�ì¹®°¯È¶Rz�±Èµ¢®°Íڱȵ¢®°¨«¯�¨«Í¢Í¢®¹¯�Ï¢¯È¶�¸�×»Âæ± ·Ë¶Õ×¢ª«¸ï¬x®�Ïx¶Õ³²¨Ç±È¨­èÕ®Å� ݤ ® ¸�®¹ª­®°±²® ±²µ¢® ì°®°¯È¶�èÕ®¹Âæ±È¶Á¯´½ Í»¸¿±Èµ¢®°Íí·Ë® ½ ¯È®�ª­®°¼Ü±´·t¨­±²µ X á � Í¢¶ÕÍ^� ì¹®°¯È¶�èÁ®ÓÂæ±²¶Õ¯È³Å¨­ÍÉÊ á ß ¸�¨«¾¿®°Í»³²¨«¶ÁÍ»³Ë·t¨Ç±Èµ½¿Ï»½Á¨­¯È·t¨«³²®�Í¢¶ÕÍ^� Ïx¶Õ³²¨­±²¨«èÁ®�¨«Í¢Í¢®°¯�Ï¢¯²¶�¸�× Âæ±¹å�{�µ¢¨Ð³�½Áª­ª«¶|·�³t×»³�±È¶É½ Ï»Ï¢ª­Àí¨­Í ¸�×»Âæ±È¨­¶ÕÍ~½ Í ¸É±Èµ¢®�ª«®°¾¿¾î½î¨Ð³�Ï¢¯È¶|èÁ®Ó¸�å

¤ µ»½ ±Å¨Ç¼�·´®�·´®°¯È®�½ÁÂñ²×»½Áª­ª«À ÔÕ¨­èÕ®°Íº±²µ ½|±ÅÏ»½Á¨­¯È·t¨Ð³�®t±Èµ¢®�èÕ®¹Âæ±È¶Á¯Ò³øµ»½ èÕ®�½�³ð±È¯²¨ÐÂê«À Í»®°ÔÕ½ ±²¨«èÁ®t¨«Í¢Í¢®¹¯ÅÏ¢¯È¶�¸�×»Âæ±Ë¶ ¼�³²½ Àá & �¨U˶Á×»ª«¸ï·´®�¨­¾¿Ï¢¯È¶|èÁ® ±²µ¢®�¬x¶Á׻ͻ¸���{�µ¢®�¯²®Ó½Á¸�®¹¯�¾¿½ Àɱ²¯ÈÀ̾¿¶�¸�¨Ç¼�Àꨫ͢Կ±²µ»®�Ï¢¯È¶Î¶Á¼ ½Á¬ ¶|èÕ® ±È¶î³�µ¢¶|· ±²µ»½ ±�¨­±±²µ»¨«³´Â°½Õ³�®t±Èµ¢®©ÍÎ×»¾ ¬x®°¯Å¶Á¼�èÁ®ÓÂæ±²¶Õ¯È³Å¨«³Ë½|±´¾º¶Î³ð±©ß a¨-5 z�½�¬ ¶Õעͻ¸É¨­Í»¸¢®°Ïx®°Í»¸�®¹Íα´¶Á¼x±Èµ¢®©ÍÎ×»¾ ¬x®°¯Å¶Á¼z¸�¨«¾º®¹Í»³²¨­¶ÕÍ»³°å¬´×�±�±Èµ¢®ÌÏ¢¯È¶ê¶ ¼t½ ªÐ³�¶Ú³�±È½ ¯²±È³�±²¶ÚÔÁ®°±�¾¿¶Á¯È®¿±²®¹¸¢¨­¶Õ×»³°å�­Ú¶ ±È¨­è|½ ±²®¹¸þ¬êÀ ³�×»ÂÒµ ±Ò½Á³²Ñê³°z ·Ë®îÍ¢¶|· ³�±È½|±È®Ì½Ú³ð±È¯²¶ÕÍ¢ÔÁ®¹¯ª«®°¾¿¾î½É½ Í ¸ÆÔÁ¨«èÁ® ½í³�®¹ªÇ¼J� ÂöÕÍÕ±Ò½ ¨«Í¢®¹¸ïÏ¢¯È¶ê¶ ¼ðå ú Í~Ï»½ ¯²±²¨ÐÂÃ×¢ªÐ½ ¯\z¢±Èµ¢®ºÏ¢¯²¶ê¶Á¼¦¨Ð³�®Ó½Á³²¨­®¹¯�±È¶ÉèÁ®¹¯²¨­¼�ÀþÛܱ²µ»¶Á×¢ÔÕµÚÏ ¶Î³²³²¨­¬»ª­Àµ»½Á¯È¸�®¹¯´±²¶ÌÂöÕÍ»Â­èÕ®ÓÝÃå

�Å{�� �"!· ��Jê

�3�zõ �

Page 71: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ì @ ë E�& ' K�0ªZDG3K ' > ' $3<B2RM^�ªÌ�<HI,0�2:4 � - ÷ �?�°� ÷t�   ��à � 03I]<,M^2 ' >�$�<�P?>�G�I�K ' @J<°@ X ä � æ ä ß�X >�CD03>£K?03> ' K�E�T( � æ ÷t� M * m á & X EHG�IÐ<�$3<?INT,4 ' KN> ' 25PH>·ZR0 ' I åÒ÷ V ��Ô X Ö�X >�CD<?2 X m ß a -5 @í @ ë E �ü÷[� - ÷ �?�?� ÷[�   ��à � K?03> ' KJE�T ( � æ ÷t� M * m � EHG3Ia4 ' KN> ' 25PH> åÒ÷ V X c·C ' ;=< ( �ü÷t� æ * 8 � X >�CD<?2 X m Ê @ð @ ë E � - ÷ �?�°� ÷t�   �Bà � 03I]<a25G32�/Dâ°<?I[G�0�2:4ªKH0�> ' K�E�T ( � æ ÷[� M * m � EHG3IÐ<<$3<HINT åqÒ V �1Ô X ÖSX >�CD<?2 X m � Ê @gÖy3hih:j ¤ ®�Ï¢¯È¶|èÁ®�±²µ¢®Ö±Èµ¢¯È®°®�Ï»½Á¯�±Ò³�¨­ÍƶÁ¯Ò¸�®¹¯¹åßÕå�ç�®Ã± ÃÐ � - a ç<çÇç a �   åe¢ Íï±²µ¢®�¶ÕÍ¢®Öµ»½ Í ¸Øz�·Ë®�µ ½ èÁ® ($à ÷ à * Þ � åe¢ Íí±²µ»®�¶ ±²µ»®°¯\z�·Ë®Öµ»½ èÕ®

(và ÷ à *  ^æKJ -

( � æ ÷[� æ * a ^æÖñJ M�ò�ó  �ô ( � æ ÷[� M *m X ç ß a X Û X á ßÓÝRçÁÛ�á & Ý X çÁÛ�ßtá Û X á ßÓÝ & Ý �

ü×�±²±²¨«Í¢Ôº±²µ¢®Ö±ð·´¶º±²¶ÁÔծñȵ¢®°¯\z�·Ë®Öµ»½ èÕ® ßtá Û X á ß Ý & Þ � z�¨«¾¿Ï¢ª«ÀΨ«Í¢Ô X mëß a.-5 å� ål�¢¶Á¯�±²µ¢¨Ð³ Ï»½ ¯²±°z�½Á³È³�×»¾º® ¼�¶Á¯�±²µ¢®º³²½ÁÑÁ®�¶Á¼ÅÂöÁÍαȯȽո�¨«Âñ²¨«¶ÁÍƱȵ»½|± X Þ Ê a ßÁå£{�µ¢®°Íڱȵ¢®°¯È® ¾ ×»³�± ®H¦�¨Ð³ð±©½ª­¨«Í¢®¹½Á¯²ª«ÀÖ¸�®°Ïx®°Í»¸¢®°Íα ³²®Ã± ¶ ¼¢èÁ®ÓÂæ±È¶Á¯Ò³�½ ¾¿¶ÁÍ»Ôt±²µ¢®e� æ ® ³¹å½�êÏx®¹Â°¨ÇØ Â¹½ ª«ª­À©±Èµ¢®°¯È®Å®?¦ê¨Ð³�± ¸�¨Ð³�áð¶Õ¨­Íᦳ�®°±È³ û ÷�¿É�ÉÔ X Ö½ Í»¸ Ïx¶Õ³²¨Ç±È¨­èÕ®2õ æ zz¼�¶Õ¯�å�� û�ç ¿�z¦³�× ÂÒµ ±Èµ»½|± H æ òªö õ æ � æ� H M�ò õ M � M å ú ± ¨Ð³�Í¢¶Á±�Í¢®¹Â°®¹³È³²½Á¯²À ±²µ»½ ±¬ ¶Á±²µ û ½ Í»¸2¿�¬ ®©Í¢¶ÕÍ^� ®¹¾¿Ï�±ðÀbzά¢×�±�½|±´ª­®Ó½Á³�±´¶ÕÍ¢®�¨Ð³ËÍ¢¶ÁÍ^� ®°¾¿Ï�±ðÀÕå x ³È³�×¢¾¿®©·t¨Ç±Èµ¢¶Á×¢±´ª«¶Õ³È³Å¶Á¼zÔÁ®¹Í¢®°¯Ò½ ª«¨­±ðÀ±²µ»½ ± û ¨«³ÖÍ»¶ÁÍ^� ®°¾¿Ï�±ðÀÕåºçz®Ã± ÃB H æ òªö õ æ � æl H M�ò õ M � M å�¢ ×¢¯�½ Í ½ ª«Àê³²¨Ð³ ¸�¨«èꨫ¸¢®¹³Ö¨«Íձȶï±ð·Ë¶Æ°½Õ³�®Ó³¸�®°Ïx®°Í»¸¢¨­Í¢Ôî¶ÕÍí·tµ»®Ã±²µ»®°¯ ÃÐ ÑƶÁ¯tÍ¢¶Á±¹åºj» ð|ì�ñ Ã Ò Ñ ñ � ®¹¯²®Ö·´®Ö¶Á¬�±Ò½ ¨«Íí±Èµ¢®Ö¼�¶Áª«ª«¶|·t¨­Í¢Ô¿ÂöÕÍα²¯Ò½Á¸�¨Ð°½ ±²¨«¶ÁÍ �

� + (và ÷ à * ( ^ æ òªö õ æ � æ ÷ ^M�ò õ M � M * ^æ òªö ^M�ò õ æ õ M ( � æ ÷t� M *m � ÷

·tµ¢®°¯È®©±²µ¢®�ªÐ½Á³�±t¨­Í»®°¯Î×»½ ª«¨­±ðÀÉ×»³²®¹³�±Èµ¢®Ö¼v½ÁÂñ�±²µ ½|± û ½ Í»¸�¿à½ ¯È®�¸�¨«³váð¶Á¨«Íα�½ Í»¸Æ³²¶ ( � æ ÷t� M * m � ¼�¶Õ¯t®°èÁ®¹¯²Àå«� û ½ÁÍ»¸ V ��¿�åºj» ð|ì�ñ ÃÐ Ñ ñ � ®¹¯²®Ö·´®Ö×»³�®Ö±Èµ¢®�®H¦�¨Ð³ð±È®°Í»Â°®Ö¶ ¼ ±²µ¢®�èÕ®¹Âæ±È¶Á¯Õ��½ Í»¸ï¶Õ¬�±È½Á¨­Íƽ¿ÂöÁÍαȯȽո�¨«Âñ²¨«¶ÁÍƽÁ³´¼�¶Õª­ª«¶|·�³ �� ( �ü÷�Ñ * ( �ü÷ à * ( �ü÷ ^ æ òªö õ æ � æ * ^æ òªö õ æ ( �ü÷[� æ *

8 � �{�µ¢®Öª«½Õ³ð±t¨«Í¢®°¯Î×»½Áª­¨­±ðÀɨгt³ð±È¯²¨ÐÂæ±�³²¨«Í»Âî û Ò � z(õ æ 8 � ½ Í ¸ ( �ü÷t� æ * 8 � å

¡ ål�騫ͻ½Áª­ª«ÀÉ·´®�¾¿¶|èÁ®Ö±È¶� ø½ ¯²± Û ¡ Ýt·tµ¢¨«Âҵڨгt®?¦�½ÕÂæ±Èª­Àí±²µ¢® ³²½Á¾º®�³�±È½ ±²®¹¾º®¹Íα ½Á³�±Èµ»½|± ¶ ¼üç�®¹¾º¾î½��»å » å�¢ ×»¯Í¢®°·�Ï¢¯È¶ê¶ ¼�¼�¶Õª­ª«¶|·�³�®Ó½Á³²¨­ª«À�¼�¯È¶Á¾ý ø½Á¯�±ËÛ � Ýz¶ ¼�±Èµ¢®´Â°×¢¯È¯²®¹Íձ骭®¹¾º¾î½»å· ü¨ÐÂÒÑ�½�èÕ®¹Âæ±È¶Á¯·�ɨ«Í�ÔÁ®¹Í¢®°¯Ò½ ªÕÏ ¶Î³�¨­±²¨«¶ÁÍiz¨ å ®Áå$z¢³�¶ ±²µ»½ ± ( �ü÷[� æ * Ò � ¼�¶Á¯t½ ÍêÀªå(�ÎÔ X Ö å x ±tª­®Ó½Á³�±´µ»½ÁªÇ¼z±²µ¢®ÖèÁ®ÓÂæ±È¶Á¯Ò³(� æ ¾ ×»³ð±tµ»½ èÕ® ½ Ï ¶Î³�¨­±²¨«èÁ®©¨«Í¢Í¢®°¯Ï¢¯²¶�¸�× Âæ±�·t¨­±²µþ®°¨­±²µ¢®¹¯��¡¶Á¯îá�Þxå x ³²³²×¢¾¿®î·t¨­±²µ¢¶Õ×�±�ª­¶Î³²³Ö¶Á¼´ÔÕ®°Í¢®¹¯È½Áª­¨­±ðÀڱȵ»½|±�� - ÷ �°�?� ÷t��÷   Ó /5ø µ ½ èÁ®¿½Ï ¶Î³�¨­±²¨«èÁ®Ö¨«Í¢Í¢®°¯tÏ»¯²¶�¸�×»Âñ�·t¨Ç±ÈµB�üå x Ϣϻª­Àꨫ͢Ô� ø½ ¯²±ÓÛ � Ýű²¶º±²µ»®¹³²®�èÁ®¹Âñ²¶Õ¯È³�½ Í ¸,�«z ·Ë®ÖÔծñ,_ X ï � `9m Êøå

�3�zõêß

Page 72: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ê�ëAì0írîiï ðzì7ñ Û x Ý©§©¨«èÁ® ½ÁÍÚ®H¦¢½ ¾¿Ï¢ª«® ³²µ¢¶|·t¨«Í¢Ôî±Èµ¢® ¯È®¹³²×¢ª­± ¨«Íd ø½ ¯²± Ûðß Ýt¶Á¼Åç�®°¾¿¾î½��»åkõº¨Ð³�±²¨«ÔÁµÎ±¹åºÛv¬tÝ ú ÍαȮ°¯ÈÏ¢¯²®°±±²µ»¨«³tÏ ½ ¯²±t½Õ³t½¿Âö�¸�¨«Í¢Ô�� ±²µ¢®¹¶Á¯È®Ã±È¨«Â ¬ ¶Õעͻ¸�å Û9U�Ýt§©¨«èÁ®�Âö�¸�®Ó³´±²µ»½ ±�¾¿½ÁÑÁ®©±²µ»¨«³t¨«Íα²®¹¯²Ï¢¯È®Ã±Ò½|±È¨­¶ÕÍɱȨ­ÔÕµÕ±Óå{�µ¢®î®?¦ê®¹¯È°¨«³²®î½ ¬x¶|èÁ®¿ÔÁ¨«èÁ®Ó³©±²µ¢®îÍ ½|±²×»¯È½Áªø¾º¶Á±²¨«è|½|±²¨«¶ÁÍ ¼�¶Õ¯a ø½ ¯²±ÌÛðßÓÝ©¶Á¼Ë±Èµ¢®îª«®°¾¿¾î½¢å� ø½Á¯�±îÛ ¡ Ý©·´½Õ³�½ ª«¯È®¹½Á¸¢À¾¿¶ ±È¨­è|½|±È®¹¸¿¬êÀ ±²µ¢®q Ū­¶Á±²ÑꨫÍî¬ ¶Õעͻ¸�å ¤ µ»½ ±Å¾¿¶ ±²¨«è|½|±È®¹³ü× ³ø±²¶ ³ð±È×»¸�ÀF ø½ ¯²±�Û � ÝÃå(¢ Í¿±²µ¢®�¶ÕÍ¢®�µ»½ÁÍ»¸¿¨­±ËÏ¢¯È¶|èꨫ¸�®Ó³½î³²¨­¾¿Ï¢ª«®�Ï¢¯È¶Î¶Á¼ ¶Á¼Y ø½Á¯�±�Û ¡ Ýæån¬´×�±�¨Ç±©½ÁÂæ±È×»½ ª«ª«Àî±²×¢¯ÈÍ»³�¶Á×�±t±È¶î¬ ®�®¹èÁ®°Íƾ¿¶Á¯È®�¨«¾ºÏx¶Á¯²±È½ÁÍα�¶ÕÍƨDZҳ�¶|·tÍƽ Í»¸ï·´®·t¨«ª­ª�× ³�®Ö¨­±�³�®¹èÁ®°¯Ò½ ªx±È¨­¾¿®¹³�¨­Íï±²µ»®�¯²®Ó³ð±t¶ ¼é±²µ¢®Ó³�®�Í»¶ ±²®Ó³°å

ܪñ�­ è úBõü6�?ø<��Ô1®�÷ ��ÔRÔR���_¦�ø��ùÝ×�7ÿ�öB÷¤ ® Í¢¶|·à¯È®Ã±²×»¯²ÍƱȶµ¢® ±È½Õ³�Ñﶠ¼ü¬x¶Á×¢Í ¸�¨­Í»Ôî±²µ¢® ¯È½ ±²®�¶Á¼ü½ÌÂö�¸�®}z ÔÕ¨­èÕ®°ÍÚ¨­±È³ ¯²®¹ª«½ ±²¨«èÁ®�¸�¨Ð³ð±Ò½ Í»Â°®Áål{�µ¢®ºÂÃ×¢¯È¯È®°ÍαϢ¨ÐÂæ±È×¢¯²® ¶ ¼�±Èµ¢® ×»Ï¢Ï ®¹¯Ë¬x¶Á׻ͻ¸¢³Ë¨­ÍêèÁ¶Õª­èÕ®¹³¦±ð·´¶ ¨«Í»Â°¶Á¾¿Ï»½ ¯Ò½ ¬»ª­®�¬x¶Á׻ͻ¸¢³ � ±Èµ¢® � ½ ¾¿¾¿¨­Í»Ô ¬x¶Áעͻ¸Ì¨«³´³ð±È¯²¶ÕÍ¢ÔÁ®¹¯ü¼�¶Õ¯³²¾¿½Áª­ª«®°¯�ä�½ÁÍ»¸¿±²µ»®9 Ū­¶Á±²ÑꨫÍ̬ ¶Õעͻ¸É¨«³�³�±²¯È¶ÁÍ¢ÔÕ®°¯ü¼�¶Õ¯ËªÐ½ ¯ÈÔÁ®¹¯Ëäêå(¢ ×¢¯´Í¢®H¦ê±�¬ ¶Õעͻ¸Éע͢¨­Ø»®¹³Ë±²µ»®�±ð·´¶�±È®¹ÂÒµ¢Í¢¨�¯Î×¢®¹³½ Í ¸ ±ÈµÎ× ³�ÔÁ®°±È³�½ï¬ ¶Õעͻ¸ ·tµ¢¨ÐÂÒµ ¨Ð³�½ ª«·�½ Àê³Ö³�±²¯È¶ÁÍ¢ÔÕ®°¯\z�±²µ¢¶Õ×¢ÔÁµ ±²µ»®î¬ ¶Õעͻ¸ ¨«³ÖèÕ®°¯ÈÀ Â꫶ճ²®º±²¶ï±²µ¢® � ½ ¾¿¾¿¨­Í»Ô¬x¶Áעͻ¸í¼�¶Õ¯�³�¾î½ ª«ª�äêå{é¶É¾¿¶ ±È¨­è|½|±È® ±Èµ¢¨Ð³ ¬x¶Á׻ͻ¸Øz�·´® ¨«Íձȯ²¶�¸�× Âî ½íÍ¢®¹· Í¢¶ ±È¨­¶ÕÍ~¶ ¼ü®¹¯²¯È¶Á¯[� ÂöÁ¯È¯È®¹Âæ±È¨­¶ÕÍ�å�çz½ ±²®¹¯ ·´® ·t¨«ª­ª¦¯È®Ã¼�®¹¯�±È¶É±Èµ¢¨«³Í¢¶Á±²¨«¶ÁÍ~½Õ³t±²µ ½|± ¶Á¼")�ª«¨«³�±t� ¸�®¹Â°¶�¸�¨­Í»Ôª+¢å~UË×»¯²¯È®°ÍᲪ«Àbzx·´® ·t¨«ª­ª ×»³²® ½î±È®°¯È¾º¨«Í¢¶Õª­¶ÕÔÁÀ̱ȵ»½|±©¨«³ ¾¿¶Á¯È®�¯È®°¾¿¨­Í»¨«³ÈÂî¹ÍÕ± ¶ ¼±²µ»®�Í¢¶ ±È¨­¶ÕÍí¶Á¼�) ì � ®¹¯²¯È¶Á¯[� °¶Á¯È¯²®ÓÂæ±È¨­Í¢Ô�°¶�¸�®¹³,+ ¶Á¼ � ½ ¾¿¾¿¨­Í»Ô»å�ï{���� s��¹s�h��Û z�! ¸Æ Û ì ÷p�¹Ý QÈ{Îy y�h y�Q Z h»y y|{ Z �¹sD�éu Z h?¹ {�É � P�G°4}< �.�N� � ' KF0 Û ì ÷p�¹Ý <?INI[G3IªP�G3INI[<�P?> ' 2�VùP�G°4}< ' EEHG3Ia<<$3<HINTªI[<�P�< ' $�<�4Fc(G�I[4 �1�£� � X >JCR<aÌ�03;J;½G�E9I[0}4 ' M�KÕì�0�I[G3M^254 �|XL�íÛ��ü÷ ì Ý�X P�G32î>�0 ' 2DK�03>e�FG3K�> � P]G\4b<?c(G3I]4�KG�E � @�¢¶Õ¯ ½î°¶ê¸¢®Ð� ½ Í»¸Æ¨«Íα²®¹ÔÁ®°¯l��z»·´®�¯²®°¼�®°¯t±È¶î±²µ»® ªÐ½ ¯ÈÔÁ®¹³�± ì ¼�¶Á¯�·tµ»¨«ÂÒµd� ¨Ð³�½ÚÛ ì ÷p�¹Ý�� ®°¯È¯È¶Á¯[� °¶Á¯È¯²®ÓÂæ±²¨«Í¢ÔºÂö�¸�®�±È¶¬x®Ö±²µ¢®�ª«¨«³�±�¶ ¼Ò�©®¹¯²¯È¶Á¯[� ÂöÁ¯È¯È®¹Âæ±È¨­Í»Ô�¯È½Õ¸�¨­× ³�¶ ¼Y�ºå�t®Ó°½ ª«ªt±Èµ»½|± � ½ ¾¿¾¿¨­Í¢Ôî® ³ÌÍ¢¶ ±È¨­¶ÕÍ ¶Á¼Ö½ ì � ®°¯È¯È¶Á¯[� °¶Á¯È¯²®ÓÂæ±²¨«Í¢Ô °¶ê¸¢®Ú¬ ®ÓÂöÁ¾¿®Ó³Ì½¡Û ì ÷¹ßÓÝ�� ®°¯È¯È¶Á¯[� °¶Á¯È¯²®ÓÂæ±²¨«Í¢Ô °¶ê¸¢®¨«Íã±²µ»¨«³ Í¢®°· ¸�®Ãػͻ¨Ç±È¨­¶ÕÍ�å�ç�®Ã±º×»³ ±È½ÁÑÁ®í½~Ï ®¹®°Ñþ¬»½ÕÂÒÑþ½ ± � ½ ¾¿¾¿¨­Í¢Ôî® ³ Ï¢¯È¶ê¶ ¼�¶ ¼�±²µ¢® � ½ ¾¿¾¿¨«Í¢Ô ¬x¶Á׻ͻ¸�¼�¶Õ¯¬¢¨«Í»½ ¯ÈÀ Âö�¸�®Ó³°åÐ{�µ¢®ºÂ°¯²×D¦ ¶ ¼Å±Èµ¢®ºÏ¢¯²¶ê¶Á¼Å·´½Õ³ ±²µ»½ ±©±Èµ¢®º¬»½ ª«ª«³��íÛ Z ÷ ì Ý©½ ¯È¶Á×¢Í ¸Ú±²µ»®ºÂ°¶ê¸¢®°·´¶Á¯Ò¸¢³�¶Á¼´½ ì � ®¹¯²¯È¶Á¯[�Âöկ²¯È®¹Âñ²¨«Í¢Ô °¶�¸�®ï½Á¯²®ï¸�¨Ð³�áð¶Õ¨­Íα¹å {�µê×»³º¨­¼�±Èµ¢®ÚÂö�¸�®ïµ»½Á³ �b� Âö�¸�®°·´¶Á¯Ò¸¢³ ·Ë®íÔÁ®°± �}� kø¶Áª Û ì ÷²ÊzÝ,m � � zË·tµ¢®°¯È®kø¶Áª Û ì ÷²ÊzÝ � �íÛ Z ÷ ì Ý?�ÇådÏ�¶Á±²®î±Èµ»½|± ·Ë®É¸¢¨«¸�ÍL® ±¿³²½ À ®H¦¢½ÁÂñ²ª«À ±²µ»¨«³ ·tµ¢®°Í�·´®ÌÏ¢¯È¶|èÁ®Ó¸ ±Èµ¢® � ½ ¾¿¾¿¨­Í»Ô ¬ ¶Õעͻ¸�åú Í»³�±²®Ó½Á¸�·´®Ë°¶ÁÍ»³²¨«¸¢®°¯È®¹¸Ö¬»½Áª­ªÐ³z¶Á¼¢¯È½Õ¸�¨«×»³ÅÛ ù�á¿ßÓÝ ï � ½ ¯È¶Á׻ͻ¸�Âö�¸�®¹·Ë¶Õ¯È¸»³?zÓ·tµ¢®°¯È®Åù©·�½Á³�±Èµ¢®Å¾¿¨«Í¢¨«¾ ×¢¾ ¸�¨Ð³�±È½ Í Âîbz½ Í ¸�¨­¾¿Ï¢ª«¨ÐÂè­±²ª«À�×»³�®Ó¸þ±²µ»®Ì¼v½ÁÂñ ±Èµ»½|±¿³�× ÂÒµ ½ Âö�¸�®í¨«³º½ Û ùÌá ßÓÝ ï � � ®°¯È¯È¶Á¯[� °¶Á¯È¯²®ÓÂæ±²¨«Í¢ÔïÂö�¸�®Áå�¬´×�± ·tµ¢®¹Íã·´®ÔÁ®¹Í¢®°¯Ò½ ª«¨«ì°® ±²µ¢® � ½ ¾¿¾¿¨­Í¢Ôî¬x¶Á׻ͻ¸ï¨Ç±�·t¨«ª­ª�¬x®�¬x®Ã±�±È®°¯t±È¶î®H¦�Ï¢ª«¨«Â°¨Ç±�·t¨­±²µÆÍ¢¶Á±²¨«¶ÁÍﶠ¼ ì � ®¹¯²¯È¶Á¯[� ÂöÁ¯È¯È®¹Âæ±È¨­Í»Ô�Âö�¸�®¹³¹å

gÖy3h+Neh�OÓs��ÓsvhP� z�!= 1îM\Z}ZDG3K?<,0 ÛvÊø÷]Â�÷ÈùÎÝ / P�G°4}< � ' K�0 Û ì ÷��¹Ý /t<?INI[G3I4/tP�G3INI]<]P?> ' 2WVdP�G\4b<\@ A5CD<?2 �}� kø¶Áª Û ì ÷²ÊzÝ�m�>ç � � @gÖy3hih:j {�µ¢®�Ï»¯²¶ÕÏ ¶Î³�¨­±²¨«¶ÁÍƼ�¶Õª­ª«¶|·�³t®¹½Õ³�¨«ª«ÀÁå ú ¼ü·´® ÂöÕÍ»³²¨«¸�®¹¯t±²µ»® ¬»½Áª­ªÐ³�¶Á¼ü¯È½Õ¸�¨­× ³ ì ½ ¯È¶Á×¢Í ¸ï±²µ¢®ºÂö�¸�®°·´¶Á¯Ò¸¢³°z±²µ»®°ÍÚ½ ÍêÀÌ·´¶Á¯Ò¸É¨«Í ÿ � ÷°ß�� � ¨Ð³�ÂöÕÍ»³�¨Ð¸�®¹¯²®Ó¸í½ ±�¾º¶Î³ð±��©±²¨«¾¿®¹³¹å({�µê×»³´±²µ¢® ³�×¢¾ ¶ ¼ ±²µ¢®�èÕ¶Áª«×¢¾¿®¹³�¶Á¼é±Èµ¢®¹³²®Ö¬»½ ª«ª«³¨Ð³t½|±�¾¿¶Õ³�±��\ç � � å¢�¼ °¶Á×¢¯Ò³�®}z ±²µ¢®�Ï¢¯È¶ÁÏx¶Õ³²¨­±²¨«¶ÁÍ ¸�¶ê®Ó³éÍ»¶ ±¦¨­¾¿¾¿®¹¸�¨Ð½|±È®°ª«À�±²¯Ò½ Í ³�ªÐ½|±È®Å¨«ÍձȶÖÍ¢®°· ½Õ³�À꾿Ï�±È¶ ±²¨ÐÂ˯²®¹ª«½ ±²¨«¶ÁÍ»³²µ¢¨«Ï»³z¬x®Ã±ð·´®°®¹Í¯Ò½|±²® ½ÁÍ»¸ ¯È®°ªÐ½|±²¨«èÁ®Æ¾¿¨«Í¢¨­¾ ×¢¾ ¸�¨Ð³ð±Ò½ Í»Â°®Áå&{z¶ãÔծñɳ²×»ÂÒµ¡¯È®°ªÐ½|±²¨«¶ÁÍ ³�µ¢¨«Ï»³¿·´® µ»½ èÕ®í±È¶ã¯È®°ªÐ½|±²®Æ±Èµ¢® ¾¿¨«Í¢¨­¾ ×¢¾

�3�zõ �

Page 73: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

¸�¨Ð³ð±Ò½ Í»Â°® ¶Á¼Å½ÌÂö�¸�® ±²¶É¨­±È³©ª«¨«³�± ¶Á¼%�N� ®¹¯²¯È¶Á¯[� ÂöÁ¯È¯È®¹Âæ±È¨­Í»Ô ¯Ò½Á¸�¨«×»³t¼�¶Õ¯ Í»¶ÁÍ^� ±²¯È¨­èê¨Ð½ ªéè ½Áª­×»®¹³ ¶ ¼%� å x ÍêÀ�� 8 � zx¬¢×�±ª«®¹³È³¦±²µ»½ÁÍ �bw � ·´¶Á×¢ªÐ¸º¬ ®t¶Á¼�¨­Íα²®¹¯²®Ó³ð±Óå ¤ ®t·t¨«ª­ªx³ð±È×»¸�À ³²×»ÂÒµî½Ö¬x¶Áעͻ¸¿Í»®H¦ê±¹å|�ê×»ÂÒµî¬x¶Á×¢Í ¸¢³ü½ ¯È®tÂ꫶ճ²®°ª«À ¯È®°ªÐ½|±È®¹¸±²¶¿¬x¶Á×¢Í ¸¢³�³�±²×»¸�¨«®¹¸ï¬êÀ���å Ê ¶Õµ¢Í»³²¶ÁÍÎÔ � � zî� ¡ Öz½ Í»¸Æ½ ¯È® ±²®°¯È¾¿®¹¸í±²µ»® Ê ¶Õµ¢Í»³²¶ÁÍï¬ ¶Õעͻ¸¢³¹å

��� {�h»y|{��ù z�v� Ñ ÆÖúih � ��O\hP�¸m(h wR�R¹Nέ}î��Ï|É æ\$3<HINT ÛvÊø÷]Â�÷Èä ÊzÝ / P�G°4}< ' Kl03;UKHGa0 Ûnû�ÊtáîßÕ÷�ÊzÝ /t<?INI[G�I4/tP]G�INI[<�PH> ' 2WVP�G°4}<(EHG�I û -/ çÁÛðß�á � ßtá � ä|Ý @gÖy3hih:j x ³é×»³²×»½ ªÎ·´®ø±²×¢¯ÈÍ�±Èµ¢®ËÏ»¯²¶Õ¬¢ª­®¹¾ë¨«ÍᲶ©½tÔÁ®¹¶Á¾¿®Ã±È¯²¨ÐÂø¶ÁÍ»®Å¬êÀÖ×»³�¨«Í¢Ôt±Èµ¢®Å®¹¾ ¬x®¹¸¢¸¢¨­Í¢Ô ¼�עͻÂñ²¨«¶ÁÍ í ¾ ¬x®¹¸�åç�®°± Z - ÷ �°�?� ÷ Z   ¬ ® Âö�¸�®°·´¶Á¯Ò¸¢³ø¶Á¼z½�Âö�¸�®�¶ ¼�¾¿¨­Í¢¨«¾ ×»¾ ¸¢¨«³�±È½ÁÍ»Âî�ù ä ÊƱȵ»½|±Ë½Á¯²®�·t¨Ç±Èµ¢¨­Íí½ � ½Á¾º¾¿¨«Í¢Ô�¬»½Áª­ª¶ ¼¦¯Ò½Á¸�¨«×»³ ì û�ÊÆá ß©¼�¯È¶Á¾ ½¿¯È®¹Â°®°¨«èÁ®Ó¸ÌèÁ®ÓÂæ±È¶Á¯ m å ¤ ®�·t¨Ð³�µï±²¶î³²µ¢¶|· X m Êøå¤ ®î·t¨­ª«ªü®°¾ ¬ ®Ó¸ ±²µ¢®îèÕ®¹Âæ±È¶Á¯Ò³Ö¨­Íαȶ í ×»Âꫨи�®¹½ÁÍ ³²Ï»½Á°®bz ³²Â¹½ ª«¨­Í¢Ôï±Èµ¢®°¾ ¬ÎÀ ½ï¼v½ÁÂæ±È¶Á¯�¶Á¼©ß ï � Êã±²¶ÚÔծñ�èÕ®¹Âæ±È¶Á¯Ò³¶ ¼tעͻ¨Ç± Í»¶Á¯È¾ïåB�¢¶Õ¯�åa�ýÔ X Ö�z¦ª­®°±a� æ -¨ � í ¾ ¬ ®Ó¸�Û Z æ Ý�½ Í»¸þª«®Ã±a� -¨ � í ¾ ¬ ®Ó¸�Û m Ýæå�¬´À ±²µ¢®ÌÏ»¯²¶ÕÏ ®¹¯�±È¨­®Ó³¶ ¼ø±Èµ¢®º®°¾ ¬x®¹¸»¸�¨­Í»Ô̼�עͻÂñ²¨«¶ÁÍ Ûv ü¯È¶ÁÏx¶Õ³²¨­±²¨«¶ÁÍù�¢å ¡ ÝHz ·´® Ôծñ � ÛðßÓÝ ä � æ ä ä � ä ßÁå¿Û � Ý ( � æ ÷t� M * m ß�á � ä�zx¨­¼å�Ò V åºÛ ¡ Ý ( �ü÷[� æ * 8 ß�á � û�å ú Í ¶ ±Èµ¢®°¯©·´¶Á¯Ò¸¢³?z ·Ë® µ»½ èÁ® ½íÂöժ­ª«®¹Âñ²¨«¶ÁÍÚ¶ ¼ü׻͢¨Ç±©èÁ®ÓÂæ±²¶Õ¯È³q� æ ·tµ»¶Õ³²®�Ï»½ ¨«¯È·t¨«³²®¨«Í¢Í¢®°¯tÏ»¯²¶�¸�×»Âñt¨«³t³²¾î½ ª«ª�z�¬¢×¢±�·tµ»¨«Âҵﵻ½ èÁ®Ö½¿Âöվº¾¿¶ÕÍiz�ª«½Á¯²ÔÕ®�¨«Í¢Í¢®¹¯tÏ¢¯²¶�¸�× Âæ±t·t¨Ç±ÈµB�üå«Ï�¶Á±²¨ÐÂ²µ¢®�³²ÀêÍαȽÁÂñ²¨Ð³²¨­¾¿¨«ª«½Á¯²¨­±ðÀî±²¶� ø½Á¯�±�Û � Ý´¶ ¼øç�®¹¾¿¾¿½ª�»åkõ�å ú Íï¼v½ÁÂñ�·Ë®�·t¨«ª­ªz¯²®Ó¸�×»Âî�¶Õ×¢¯tÏ¢¯È¶Á¬¢ª«®°¾ ±²¶î®?¦�½ÕÂæ±Èª­Àî±Èµ¢¨Ð³�°½Õ³�®Õå � ¶|·��¤ ®É·t¨«ª­ªLáð×»³ð±¿³�µ»¨Ç¼Ü±º¶Á×¢¯ ¶Á¯È¨­ÔÕ¨­Í ±²¶ ½ÚÍ¢®°· èÕ®¹Âæ±È¶Á¯ � ³�¶Æ±Èµ»½|± ¼�¯²¶Õ¾ ±Èµ¢¨Ð³�èÁ®ÓÂæ±È¶Á¯\zz±Èµ¢®ÉèÕ®¹Âæ±È¶Á¯Ò³�� æ ¾ ×�±²× ½ ª«ª­À³²×¢¬�±²®¹Í»¸Æ½ ÍÚ½ Í»ÔÁª«®©¶Á¼ ½ ±�ª­®Ó½Á³�± 9 ï � å x Í»¸Æµ¢¶|·ë¸¢¶º·´®Öػͻ¸Æ³²×»Âҵƽ¿èÁ®¹Âñ²¶Õ¯ � � ¤ ®°ª«ª�±²µ»®�¾º¶Î³ð±tÍ»½ ±²×¢¯Ò½ ª�¨Ð¸�®Ó½¨Ð³ü±È¶ ³²µ¢¨Ç¼Ü±´±²µ»® ¶Õ¯²¨«ÔÁ¨«ÍÌÂ꫶ճ²®°¯Å±²¶ ±²µ¢®©³²Â°®°Í¢® ¶ ¼z½ÁÂñ²¨«¶ÁÍ*z Í»½Á¾¿®°ª«ÀbzÕ±²¶|·�½ ¯Ò¸¢³«�üå(��Ï ®ÓÂè­Ø °½Áª­ª«Àbzê·´®�·t¨­ª«ª�¾¿¶|èÁ®t±È¶³²¶Á¾¿®ÖÏ ¶Õ¨­Íα & �ã½ÁÍ»¸í¨­Í»³²Ïx®¹Âæ±�¶Õ×¢¯�·Ë¶Õ¯²ªÐ¸î¼�¯È¶Á¾�±²µ¢®¹¯²®Õå«{�µ¢®©¼�¶Áª«ª­¶|·t¨«Í¢Ô¿Âêн ¨«¾ ½Á³È³�®¹¯�±Ò³Ë±²µ»½ ±�·Ë®Ö·t¨«ª­ª�³²®°®Ö·tµ»½ ±·´®©µ»¶ÁÏx®Ö±²¶î³�®¹®Áå

èÐé !¢s��ù z�v�x� A5CD<?I[<�< )}' KN>vKª032�& K�MRP�C�>�CD03>·EHG3I�<�$3<?INT åÐÒ V �äÔ X ÖSX ( � æ á & �ü÷t� M á & � * Þ � X c·C ' ;=<lEHG�I<<$�<?INT å]X ( � æ á & �ü÷t� á & � * 8 � @gÖy3hih:j ¤ ® ·t¨­ª«ª Í¢¶ ± ³²Ïx®¹Âè­¼�À & Àծñ�¶ÕÍ¢ª­Àí±²µ ½|± ¨­± ·t¨«ª«ªzª«¨­® ¨­ÍƱȵ¢® ¨«Íα²®°¯Èè|½ ª � m & + ßÕåÕ�»¶Á¯©³�×»ÂÒµ & zxÍ¢¶ ±È®±²µ ½|±

( � æ á & �ü÷[� M á & � * mëßtá � ä�á � & Ûðßtá � û»Ý a & / Ûðßtá & Ý / a � & ûîá � ä �{�µ¢®�¯È¨­ÔÕµÕ±[� µ ½ Í»¸ ³�¨Ð¸�®�¨«³¦¾¿¨«Í¢¨«¾º¨«ì°®Ó¸¿½|± & ßxá � û�åY�¢¶Õ¯é±Èµ¢¨Ð³ü³�®°±�±È¨­Í¢Ôîz|±²µ»®>� � �º½ ¬x¶|èÁ®´®°¯Î×»½Áª«³½�Åû´áa�ªû / á � äêå�t®Ó°½ ª«ª�·´®~³²®Ã±2û -/ Ûðߺá � ßtá � ä|ÝNz�½ÁÍ»¸¡³²¶�·Ë® µ ½ èÁ®ãÛðߺá � û»Ý / ß á � ä�zt·tµ»¨«ÂÒµ¡¨«Í¡±²×»¯²Í¡¨«¾¿Ï¢ª­¨«®¹³�Åû¿á��Åû / á � ä � å ¤ ®�°¶Áͻ°ª­×»¸¢®Ö±²µ»½ ±´¼�¶Õ¯t±²µ»¨«³t³²®Ã±²±²¨«Í¢Ô ( � æ á & �ü÷t� M á & � * Þ � z¢½Á³t¸¢®¹³²¨­¯È®¹¸�å{鶿°¶Áͻ°ª­× ¸�®bz¢·´®ÖÍ¢¶ ±È®©±²µ»½ ±t¼�¶Á¯�±²µ»®�³²½Á¾º®�³²®Ã±²±²¨«Í¢Ô & ßtá � ûØz¢·Ë®Öµ»½ èÕ®

( � æ á & �ü÷¹Û�ß�á & Ý�� * 8 Ûðßtá & Ý°Ûðß�á � û»Ýøá Û & Ý°Ûðß�á & Ý � ÷·tµ¢¨ÐÂÒµÆÀΨ«®°ªÐ¸¢³´±Èµ¢®�¶ ±Èµ¢®°¯tÏ»½Á¯�±t¶Á¼é±Èµ¢®�Âêн ¨«¾Æå

¤ ®º½Á¯²® Í¢¶|· ¨­Í ½ÌÏx¶Õ³²¨Ç±È¨­¶ÕÍÚ±²¶Æ½ Ï»Ï¢ª­ÀÚçz®°¾¿¾î½,�¢å©õ�zØ ø½Á¯�± Û � ÝHz�±²¶Ì±Èµ¢®ºèÁ®¹Âñ²¶Õ¯È³ ÿ � æ á & �«� æ ½ Í»¸ù�~á & � ±È¶ÂöÕÍ»Âê«×»¸�®©±Èµ»½|± X m Êøå«{�µ¢¨Ð³tÂöÕÍ»Âê«×»¸�®Ó³´±²µ¢®�Ï¢¯È¶ê¶ ¼ ¶ ¼ ±²µ¢®Ö±Èµ¢®°¶Õ¯²®¹¾ïå

U˶Á¾ ¬¢¨«Í¢¨­Í»Ô� ü¯È¶ÁÏx¶Õ³²¨Ç±È¨­¶ÕÍ7�»å ÍÖ·t¨­±²µ�{�µ¢®¹¶Á¯È®°¾ �¢å«ß � ÔÁ¨«èÁ®Ó³ø×»³¦±Èµ¢® í ª«¨Ð½Á³t��¬�½Á³È³È½ ª«ÀÎÔÕ¶�×¢Ï»Ï ®¹¯ü¬ ¶Õעͻ¸¿¶ÕÍ¿±²µ¢®�¯Ò½|±È®¶ ¼ø½ ¼v½ ¾¿¨«ª­À̶Á¼¦Â°¶�¸�®¹³�·t¨­±²µÆ¯È®°ªÐ½|±²¨«èÁ®�¸�¨Ð³�±È½ Í Âî�äêå

��� {�h»y|{��ù z�v�D�½Æ�P é sv!�O�Q,�7!�OiO°! é � u:h�m(hxwR��¹ëÎÐ�D��È�� Ñ �ªÏ|É�ë E Ä ' Kn032 ' 2!\(2 ' >�<:EH03� ' ;UT9GtEnÌ ' 2:0�INT£P�G\4b<HK(c ' >JCI[0�>�< Ù 0�2:4�I[<H;$03> ' $�<F4 ' KN>�0325P]< äWX >�CD<?2 Ù m ßtáþâãÛ -/ çÎÛðßtá � ßtá � ä Ý�Ý @

�3�zõ ¡

Page 74: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

gÖy3hih:j {�µ¢® ±²µ¢®¹¶Á¯È®°¾ ¼�¶Áª«ª­¶|·�³�®¹³È³�®¹ÍձȨ«½Áª­ª«Àí¼�¯²¶Õ¾ ů²¶ÕÏ ¶Î³�¨­±²¨«¶ÁÍ��¢å Í̽ÁÍ»¸ù{�µ¢®¹¶Á¯È®°¾ �¢å«ß � ål{�µ»® ¾¿¨«³È³²¨­Í¢Ôɨ­Í^�ÔÁ¯È®¹¸¢¨­®¹ÍձҳŽÁ¯²®©¸�¯²À¿®?¦ê®¹¯È°¨«³²®¹³Ë³�µ»¶|·t¨­Í¢Ô�±²µ»½ ±´¶ÕÍ¢® ¹½ ÍÌÏ¢¨ÐÂÒÑ¿Ê ªÐ½ ¯ÈÔÁ®�®¹Í¢¶Á×¢Ôյɳ²¶ ½Á³Å±²¶ ¶|èÁ®°¯ÒÂöվ¿®�½ ª«ª Ï»¯²¶Õ¬¢ª­®¹¾î³Ïx¶Õ³²®¹¸º¬êÀ�¨«¸¢®°ÍᲨ­±²¨«®¹³Å·tµ¢¨«ÂÒµºµ¢¶Õª«¸º¶ÁÍ»ª­Àº½Á³²Àξ¿Ï�±È¶ ±È¨«Â¹½ ª«ª­ÀÕåËÛv{�µ»®tèÁ¶Áª«×¢¾¿®t¶ ¼ � ½Á¾¿¾º¨«Í¢ÔÖ¬»½Áª­ªÐ³ø¨Ð³øÍ¢¶ ±ü®?¦¢½ÁÂæ±Èª­À ¯²®?�ªÐ½|±²®Ó¸�±È¶�±Èµ¢®�¬¢¨«Í»½ ¯ÈÀ�®°Íα²¯È¶ÁÏêÀ©¼�עͻÂñ²¨«¶ÁÍj�Õ±²µ»® Ê ¶Áµ»Í»³�¶ÕÍ�¬x¶Áעͻ¸ ¶ÁÍ»ª­À�ª«¶|·´®°¯ ¬ ¶Õעͻ¸¢³é±²µ»®ÖÛ ì ÷p�¹Ý�� ®¹¯²¯È¶Á¯[� °¶Á¯È¯²®ÓÂæ±È¨­Í¢Ô¯Ò½Á¸�¨«×»³Ë¶ ¼é°¶ê¸¢®¹³Ë·tµ¢®°Í2��¨«³�½ ÔÁ¯È¶|·t¨­Í¢Ô�¼�עͻÂæ±È¨­¶ÕÍɶÁ¼zÊøå x Í»¸É±²µ¢®©¬x¶Áעͻ¸É¶ÁÍ¢ª«À̽ ª«ª«¶|·�³Å½ ª­¨Ð³ð±[� ¸¢®¹Âö�¸�¨«Í¢Ô ¯È½Õ¸�¨­× ³¶ ¼§û�ÊÆá ß�½ÁÍ»¸ÉÍ»¶ ±lû�Êøå Ý ¤ ®}® ª«ªz³²Ï»½ ¯È®�±Èµ¢®�¯È®¹½Á¸¢®°¯´±²µ¢®�¸¢®Ã±È½Á¨­ªÐ³¹å¬´®Ã¼�¶Õ¯²®tÂöÕÍ»Âê«×»¸�¨«Í¢Ô©±²µ»®�³�®ÓÂæ±²¨«¶ÁÍLz ª­®°±ü×»³ü¸�¨«ÔÁ¯È®¹³È³ ¬¢¯È¨­®�¤»À�±È¶©×»Í»¸�®°¯Ò³�±È½ Í ¸ ·tµ¢®¹Íî½ Í»¸º·tµêÀ�±²µ»® í ª«¨«½Õ³���¬�½Á³È³²½Áª­ÀêÔÁ¶¬x¶Áעͻ¸Æ¨Ð³t¬x®Ã±²±²®°¯Óåe{é¶Ì¸�¶Ì³²¶Rz¢ª«®Ã±�× ³t¯²®Ó°½Áª­ª�±ð·´¶¿¶ ¼ ±²µ¢® Ï¢¯²®¹èꨭ¶Õ×»³�¬ ¶Õעͻ¸¢³�±²µ»½ ±�·Ë®�µ ½ èÁ®Ö·Ë¶Õ¯²ÑÕ®¹¸í·t¨Ç±Èµ�åe{�µ»®� ½Á¾¿¾º¨«Í¢Ôã×»Ï¢Ï ®¹¯É¬x¶Á×¢Í ¸¡³²½ À�³ÌÙ m ß á âãÛ ä ï � ÝNz�·tµ¢¨«ª­®Ú±Èµ¢® §£k ª­¶|·´®°¯î¬x¶Á×¢Í ¸�³²½ À�³îÙ Þ ß á â Ûvä Ýæå{�µ¢® í ª«¨Ð½Á³t��¬�½Á³È³È½ ª«ÀÎÔÕ¶¿¬ ¶Õעͻ¸ ³�µ¢¶|·�³©Ù.m ß©á âãÛ$û�Ûvä Ý²ÝNz�¼�¶Õ¯�û�Ûvä Ý -/ ç�Ûðß©á � ßtá � ä|Ýæå7�騫¯Ò³ð±ÖÍ¢¶ ±È®º±²µ»½ ±ä ï � mÇû�Ûvä ÝÕm äÖ½ Í»¸îâ / ¨«³Å¾º¶ÕÍ¢¶ ±È¶ÁÍ¢®�¸¢®¹ÂïȮ¹½Õ³�¨«Í¢ÔîzÕ½ Í ¸î³�¶Ö±Èµ¢® í ª­¨Ð½Á³t��¬�½Õ³²³È½ ª«ÀêÔÁ¶�¬x¶Á׻ͻ¸î¨Ð³Å½ ª«·�½ À곦¬x®Ã±ð·´®°®¹Í±²µ»® � ½ ¾¿¾¿¨«Í¢Ô�¬ ¶Õעͻ¸ ½ Í ¸ã±Èµ¢®~§£k ¬ ¶Õעͻ¸�å��¢×¢¯²±²µ¢®¹¯î¨Ç¼�ä 8 � zű²µ¢®¹Í±û�Ûvä Ý 8 ä ï � ½ Í»¸ ³²¶ ±Èµ¢® í ª«¨Ð½Á³t�¬�½Á³È³²½Áª­ÀêÔÕ¶�¬ ¶Õעͻ¸ï¨Ð³´³�±²¯È¨ÐÂæ±²ª«À̬x®Ã±²±²®°¯�±Èµ»½ Íí±²µ»® � ½ ¾¿¾¿¨«Í¢Ô¿¬ ¶Õעͻ¸�å � ¶|·Ë®¹èÁ®°¯´¨­¼ ä�¨Ð³tÂ꫶ճ²® ±²¶¿ì°®¹¯²¶ ±²µ¢®¹Íïä ï �¨Ð³�½¿èÁ®¹¯²ÀÉÔÁ¶ê¶�¸ï½ÁϢϢ¯È¶�¦�¨­¾î½|±È¨­¶ÕÍɱȶ�û�Ûvä Ý�½ Í»¸Æ³²¶¿¼�¶Á¯©³�¾î½ ª«ª�è|½ ª«×¢®Ó³t¶ ¼üä ±²µ¢® í ª«¨«½Õ³���¬�½Á³È³²½Áª­ÀêÔÁ¶ ¬ ¶Õעͻ¸Æ¨Ð³�Í¢¶Á±¾ × Âҵɬx®Ã±�±È®°¯�±Èµ»½ Íí±²µ¢® � ½ ¾¿¾¿¨­Í¢Ô¿¬x¶Á×¢Í ¸�å � ¶|·´®°èÕ®°¯ü¼�¶Õ¯�ª«½Á¯²ÔÕ® è|½ ª«×¢®Ó³Ë¶Á¼éä�z�û�Ûvä Ý�³�±È½Á¯�±Ò³Ë±²¶¿ÔÁ®°±�°ª­¶Î³�®¹¯Å±È¶¿äêåú ÍÚÏ»½Á¯�±È¨«Â°×¢ª«½Á¯°z ¨Ç¼Åä -/ á 6 z»±Èµ¢®°ÍBû�Û ä Ý -/ á å 6 ï � ½ Í ¸Ú³�¶�û ½ÁϢϢ¯È¶Õ½ÕÂÒµ¢®¹³ -/ ½Á³�äî½ÁϢϢ¯È¶Õ½ÕÂÒµ¢®¹³ -/ åq�ê¶É½Õ³ä�Ù -/ z¢±²µ¢® í ª­¨Ð½Á³t��¬�½Õ³²³È½ ª«ÀêÔÁ¶�¬x¶Áעͻ¸ï¯È®¹½Áª­ª«Àɳ�±È½ ¯²±È³´±È¶¿ÔÁ®Ã±�¬x®Ã±²±²®¹¯�½ Í»¸ï½ Ï»Ï¢¯²¶Î½ÁÂÒµ¢®Ó³ü±Èµ¢® §£k ¬x¶Áעͻ¸j�¤ µ»½ ±�®°ªÐ³�®�ÂöÕ×¢ªÐ¸É·´®Öµ¢¶ÁÏx®©¼�¶Á¯_� ¤ µ¢¨­ª«®Ö±²µ»® í ª«¨«½Õ³���¬�½Á³È³²½Áª­ÀêÔÁ¶�¬x¶Á׻ͻ¸ïÔÁ¨«èÁ®¹³´×»³´±Èµ¢®�¯È¨­ÔÕµÕ±t¬x¶Á×¢Í ¸Ì¼�¶Õ¯�ä -/ z¨­± ¸�¶ê®¹³�Í¢¶Á±q¯Î×¢¨Ç±È®�µ»½ èÕ® ±Èµ¢®�¯È¨­ÔÕµÕ±�ÔÕ¯²¶|·�±Èµï½Á¯²¶Õעͻ¸É±²µ¢¨Ð³tÏx¶Á¨«Íα¹å ú ÍÆÏ»½Á¯�±È¨«Â°×¢ªÐ½ ¯\zê±²µ¢® §£k ¬x¶Á׻ͻ¸Ú³�µ»¶|·�³´±²µ»½ ±¶ÁÍ»® °½ÁÍÆػͻ¸ °¶ê¸¢®¹³t¶Á¼ü¯È½ ±²®Ðè¿Û 6 / Ý�½ÁÍ»¸Æ¯²®¹ª«½ ±²¨«èÁ®�¸�¨Ð³�±È½ Í Âî -/ á 6 zx½Á³ 6 Ù � å�{�µ¢® í ª­¨Ð½Á³t��¬�½Õ³²³È½ ª«ÀêÔÁ¶ ¬x¶Á׻ͻ¸¶ÁÍ»ª­ÀÚ¯È×¢ª«®¹³ ¶Á×�±�Âö�¸�®Ó³ ¶Á¼Å¯Ò½|±²®*üÖÛ 6 Ý ½|±©±²µ¢¨Ð³Ö¸�¨«³�±È½ÁÍ»ÂîÕå ¤ µ¢¨ÐÂÒµ ¬x¶Á×¢Í ¸ ¨Ð³©Â°ª­¶Î³�®¹¯�±È¶Ì±Èµ¢®º±²¯È×�±²µ(� {z×¢¯ÈÍ»³©¶Á×¢±±²µ»® §£k ¬ ¶Õעͻ¸Æ¨Ð³tÂöÁ¯È¯È®¹Âæ±tµ¢®¹¯²®}z¢½ Í»¸í±Èµ¢® í ��¬¡¬x¶Áעͻ¸ï¨Ð³�±²¶ê¶¿·´®¹½ Ñ�å ú Íï±²µ¢®�Í»®H¦ê±�ª­®ÓÂæ±È×¢¯²®�·´®Ö·t¨­ª«ªz¸�®Ó³²Â°¯²¨«¬x®½Æ¸�¨KÙx®¹¯²®¹ÍÕ±�×¢Ï»Ï ®¹¯�¬ ¶Õעͻ¸Øzé°½ ª«ª«®¹¸~±²µ¢®Ìçz¨­Í¢®Ó½ ¯� ü¯È¶ÁÔկȽÁ¾¿¾º¨«Í¢Ô ÛvçL ´Ý ¬ ¶Õעͻ¸Øzé·tµ¢¨«ÂÒµ ®°Í ¸¢³Ö×¢Ï�³�µ»¶|·t¨­Í¢Ôí±²µ»®±²¨«ÔÁµÎ±ÈÍ¢®¹³È³�¶ ¼ ±²µ¢® §£k ¬x¶Á׻ͻ¸�å

ܪñNð ýÁ®���ѧ¦þÝ×�Ðÿ�öB÷ÆÔ¤ ®ºÍ»¶|· ®H¦ê±²®¹Í»¸ ±Èµ¢®º¯²®Ó³�×¢ª­±È³©¶Á¼Å®¹½Á¯²ª«¨­®¹¯©³²®¹Âñ²¨«¶ÁÍ~±²¶ÆÂö�¸�®¹³©¶|èÕ®°¯©ÔÁ®°Í»®°¯Ò½ ª¦½ ª«Ï¢µ»½ ¬x®Ã±Ò³°å ¤ ®î³ð±Ò½ ¯²±©·t¨­±²µ " � ½Á¯²À®°¾ ¬ ®Ó¸¢¸�¨«Í¢ÔÕ³¹ål{�µ¢® ¸¢®Ãػ͢¨­±²¨«¶ÁÍ ¸�¶ê®¹³�Í»¶ ±�®?¦Î±È®°Í»¸Ú±²µ¢®�Ï»¯²®¹èΨ«¶Á× ³�¸�®ÃØ Í¢¨Ç±È¨­¶ÕÍizx¬¢×�± ¨«ÍÚ¼v½ÕÂæ±°zxÔÁ¨«èÁ®Ó³�½ Í ½ÁªÇ±È®°¯ÈÍ»½|±È®®°¾ ¬ ®Ó¸¢¸�¨«Í¢Ôî·tµ¢¨ÐÂÒµí·´¶Á¯ÈÑ�³�½Á³�·´®°ª«ª å� ¨*¦Ì½ÁÍ̽ ¯È¬¢¨Ç±È¯È½Á¯²À ¬¢¨ áð®ÓÂæ±È¨­¶ÕĮ́­Í ¸ � Å , Ù Ô " Ö ¬x® ½ ÍêÀº¬¢¨ áð®¹Âæ±È¨­¶ÕÍ̬x®Ã±ð·´®°®°ÍFÅ , ½ Í»¸�Ô " Ö åY�»¶Á¯ ߣmËå(m Ê|zÎçz®Ã± { æ 3 �¬x®Ö±²µ¢®�עͻ¨Ç±�èÕ®¹Âæ±È¶Á¯�½Áª­¶ÕÍ¢Ô ±Èµ¢®�å ±²µÚÂöê¶Õ¯È¸�¨«Í»½ ±²®Ö¸�¨­¯È®¹Âñ²¨«¶ÁÍ鶴ÍBà � å ¤ ®�Í¢¶|·ë¸¢®Ãػ͢®�¶Õ×¢¯ " � ½ ¯ÈÀî®°¾ ¬x®¹¸»¸�¨­Í»ÔÕ³¹å�ï{���� s��¹s�h��Û z�v��6½Æ�P��KmÅ{ô¹R¹ésD�éu " Q]!�y � O<NY! Z { sG�¸P©w Z é sG¹ {�!��ºO<NY! Z {�É A5CD< <?�FÌ�<�4b4 ' 2WV E�M^2:P?> ' G�2"ô/væn�ªÌ�<]4 � Å , Ùâà , ' Ka4b<v\«25<�4�03K|EHG�;J;=G3cYK<Ä

"ô/væn�FÌ�<�4 Û & Ý ¡{@ÿ � � o 5 s 3 , �% G3I Ê Þ ß�X >JCR< Ê /t4 ' �ª<?2DK ' G32503;:<?�ªÌ]<�4}4 ' 2WVnE�M^25PH> ' G32�< ) >�<?2:43Kn>�CD<£<?�FÌ�<�4b4 ' 2WV70bÌ�GA$3< X c ' >JCÐ"ô/væn�ªÌ�<]4 � Å � , Ùà , � Ì�< ' 2WVFV ' $�<?2�Ì?T

"ô/væn�FÌ�<�4 Û ( & - ÷ �?�°� ÷ & ��* Ý ( "ô/væn�ªÌ�<�4 Û & - Ýæ÷ �?�?� ÷ "ô/væn�ªÌ]<�4 Û & � Ý * �gÖy3h+Neh�OÓs��ÓsvhP� z�v��#&% G3I�$3<�PH>�G3I�K@& ÷�¾1��Å � , X >�CD<7<H�ªÌ�<�4b4 ' 2�VÐ"ô/væÕ�FÌ�<�4FK?03> ' Kn\e<HK<Ää�"ô/væn�ªÌ�<]4 Û & Ý ä / Êø÷ ( "ô/væn�ªÌ�<]4 Û & Ýæ÷ "ô/væn�FÌ�<�4 Ûn¾éÝ * ÊÆá1 ïÛ & ÷�¾éÝ �

�3�zõ��

Page 75: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ú ±�·t¨«ª­ªé¬ ® Ï¢¯²®°¼�®°¯È¯È½Á¬¢ª«® ±È¶î¨­Í ¸�®H¦Æ¶Á×¢¯ " Ê5� ¸�¨«¾¿®°Í»³²¨«¶ÁÍ»½Áª�³�Ï»½ÕÂî�¬êÀ̱𷴶ͻ¸�¨ÐÂî¹³qåÒ÷ V ·t¨­±²µ�ån� Ô Ê5Ö ½ Í ¸ V � Ô " Ö åç�®°± â æ ¸�®¹Í¢¶ ±È®î±²µ»®ÌµêÀÎÏx®°¯ÈªÐ½ Í¢®î¨«Í4à , � ÔÕ¨­èÕ®°Í�¬êÀ H ,M J - : æ M ßÁå�Ï�¶ ±²®Ì±²µ»½ ±�±²µ¢® " � ½Á¯²À ®°¾ ¬x®¹¸»¸�¨­Í»Ô ª­¨«®¹³¨«Í�±²µ¢®ï½A;îÍ¢®É³²×¢¬»³²Ï»½ÕÂî�� ÔÕ¨­èÕ®°Í�¬êÀ~±Èµ¢®É¨«Íα²®¹¯È³²®¹Âñ²¨«¶ÁÍ�¶ ¼t±Èµ¢®ÌµêÀêÏ ®¹¯²Ï»ª«½ÁÍ¢®¹³ â æ z¦¨ å ®Áå$z�� �� �æKJ - â æ å~ç�®°±� � ��à , � ¬x® ±²µ¢®¿èÁ®ÓÂæ±È¶Á¯ ( -, ÷ �?�°� ÷ -, * å�{�µ¢®¹Í� � ½Áª«³²¶Éª«¨«®¹³ ¨­Í� ½ Í ¸Ú·t¨­ª«ª¦Ï¢ªÐ½ Àí±Èµ¢®¿¯²¶Õª­® ¶ ¼ü±Èµ¢® ¶Õ¯²¨«ÔÁ¨«Í ¨«Í�~å ¤ ®�·t¨­ª«ª�×»³²®©±²µ¢®Ö¼�¶Õª­ª«¶|·t¨«Í¢Ô¿Ï¢¯²¶ÕÏ ¶Î³�¨­±²¨«¶ÁÍɱ²¶¿±È¨­ÔյձȮ°Íï¶Á×¢¯t¯È®¹³²×¢ª­±È³¹ågÖy3h+Neh�OÓs��ÓsvhP� z�v�¢} A5CR<�$3<�PH>�G3I�K ÿ "ô/væÕ�FÌ�<�4 Ûv�zÝ´á � � � � �"Å � , � ; ' < ' 2 032 Û " á�ßÓÝðÊ /t4 ' �ª<H2RK ' G�2:0�;�$3<]P?>�G3IKSZD0}P�<ÐG0$�<?I à @¤ ®�½ ¯È®©Í»¶|· ¯È®¹½Á¸¢À¿±²¶îÏ¢¯È¶|èÁ®©³�¶Õ¾º®�¬x¶Á׻ͻ¸¢³¹å ¤ ®�³�±È½Á¯�±t·t¨­±²µï±²µ¢® " � ½ ¯ÈÀ� üª«¶ ±ÈÑꨭÍï¬ ¶Õעͻ¸�å��� {�h»y|{��ù z�v�^ÇÇÆ " Q]!�y � g é h��<å�sD�½meh wR��¹%É�ë E � ' K 032 ÛvÊø÷]Â�÷ÈùÎÝ , P]G\4b< X >�CD<?2 ÂÛm Ê á ,, ~i- çzù aª«¶ÁÔ , } , �, ~Ø- ù ~ @gÖy3hih:j ú ±Å³�×T;Ì°®¹³ ±²¶�Ï»¯²¶|èծűȵ¢®�±²µ¢®¹¶Á¯È®°¾ ¼�¶Õ¯ÅùîÞ , ~i-, ÊøåY{�µ¢®t¯È®°¾î½ ¨«Í¢¨«Í¢Ô�°½Á³²®¹³é¼�¶Õª­ª«¶|· ¬êÀ�±Èµ¢®t¯È®¹³�±²¯È¨«Âñ²¨«¶Áͽ ¯ÈÔÁ×»¾º®¹Íα¹åa�»¶Á¯©±²µ¢®î¹½Á³²®ºù~Þ ,, ~Ø- Ê|z�·´® Í»®°®¹¸~±²¶Æ³²µ¢¶|· ±²µ ½|±Ö±²µ¢®¿Íê×¢¾ ¬ ®¹¯©¶Á¼´Â°¶ê¸¢®°·´¶Á¯Ò¸¢³�¨Ð³Ö½|±�¾¿¶Õ³�± " ÊøåÛv{�µ»¨«³�¬x¶Á×¢Í ¸É¨Ð³´¾º®°±t¬ÎÀb��®°®¹¸^��­Ú×»ª­ª«®°¯�°¶ê¸¢®¹³´¶ ¼é¸¢®°ÔÁ¯È®°®ºßÁå Ý ú ±�·´¶Á×»ª«¸É¬ ®�³²ª­¨«ÔÁµÎ±²ª«À½Õ³�¨«®°¯Ë±²¶¿Ï¢¯È¶|èÁ®©½ ¬x¶Á׻ͻ¸¶ ¼ � Û " á�ßÓÝðÊøå7{�µ»¨«³Ö¾î½ À ³È½|±²¨Ð³�¼�À ¾¿®°¯È®º¾¿¶Õ¯�±Ò½ ªÐ³?z�¬¢×¢±�³²¨«Í»Âî¿·´®b® ¯²®¿³�×»Ï ®¹¯²µê×¢¾î½ ÍLz�·Ë®}® ª«ªøÏ¢¯È¶|èÁ® ±²µ¢®îÂöկ²¯È®¹Âñ¯È®¹³²×¢ªÇ±Óåç�®°±�� ¬ ®¿½ Í Û�Êø÷]Â�÷²ùêÝ , Âö�¸�® ·t¨­±²µþùÚÞ , ~i-, Êøå�çz®Ã± & ¬x®º±²µ¢® ;=<�0�KN> Âöվ¿¾º¶ÕÍ¢ª«Àï¶�¹ÂÃ×¢¯È¯²¨«Í¢Ôɳ²Àê¾ ¬x¶Áª¦¨«Í ±²µ»®Ø»¯Ò³ð±©Âöê¶Á¯Ò¸�¨«Í»½|±È®�½ ¾¿¶ÁÍ¢ÔÌ°¶�¸�®°·´¶Á¯Ò¸¢³�¶ ¼(�ºå�çz®Ã±9�9�z¬ ® ±²µ¢® Âö�¸�®�¶Õ¬�±È½Á¨­Í¢®Ó¸Æ¬êÀɱȵ¢¯²¶|·t¨«Í¢Ô̽ ·�½ Àî¼�¯È¶Á¾ � ½Áª­ªÂö�¸�®¹·Ë¶Õ¯È¸»³�±Èµ»½|±�µ»½ èÕ®º½ÁÍ & ¨­Í ±²µ»® Ø ¯È³�±�Âöê¶Á¯Ò¸�¨«Í»½|±È®ºÏx¶Õ³²¨­±²¨«¶ÁÍ�åFÏ�¶Á±²®¿±²µ ½|±,� �9���éÞ , ~i-, � �ª�Çåª{�µÎ× ³Ö¨Ç±�·t¨«ª­ª³²×T;ÌÂîֱ²¶¿Ï¢¯È¶|èÁ® ±²µ ½|±Ð� �9�S�DmëÛ " á ßÓÝðÊ ÛܱȶîÔÁ®°±�� �ª�^m " ÊzÝæå ¤ ®�·t¨«ª­ª�¸�¶Ì³²¶¿¬ ®¹ª­¶|·�åç�®°± Z - ÷ �°�?� ÷ Z   ¬x® ±²µ¢® °¶�¸�®°·´¶Á¯Ò¸¢³ ¶ ¼ù�9�vå ç�®Ã± � - ÷ �°�?� ÷[�   �Þà , � ¬x® ±²µ¢®�èÕ®¹Âñ²¶Á¯Ò³ ÔÁ¨«èÁ®¹Í � æ " � í ¾ ¬x®¹¸zÛ Z æ ݦá�� � åÅçz®Ã±q� á�Û ( " � í ¾ ¬ ®Ó¸�Û & Ýæ÷ � � ~i- * á � � Ý°å ¤ ®�·t¨­ª«ªé³²µ¢¶|·ë¬ ®¹ª­¶|· ±²µ»½ ±�±²µ¢®Ö¼�¶Õª­ª«¶|·t¨«Í¢Ô½ ¯È®�±²¯È×¢® � Û�ßÓÝ ( � æ ÷[� M * m � z Û � Ý ( � æ ÷t� * 8 � zê½ Í ¸ÚÛ ¡ Ý|� æ ÷[�«® ³´½ ¯È®�°¶ÁÍαȽÁ¨­Í¢®Ó¸º¨­ÍɽÉÛ " á ßÓÝðÊƸ¢¨­¾¿®°Í ³�¨«¶ÁÍ»½Áª»¯È®¹½ÁªèÁ®ÓÂæ±È¶Á¯�³²Ï»½Á°®Áå x Ϣϻª­Àꨫ͢ÔÉç�®¹¾¿¾¿½,�¢å©õ ±²¶î±Èµ¢®¹³²®�èÁ®ÓÂæ±È¶Á¯Ò³?z¢·´®�ÔÁ®°±�±²µ ½|± X m Û " á ßÓÝðÊ|z ½Õ³�¸�®¹³²¨«¯²®Ó¸�å�{�µÎ× ³�¨­±³²×T;ÌÂî¹³´±È¶îèÁ®¹¯²¨­¼�Àî±²µ»®Ö±²µ¢¯È®°®�ÂöÕÍ»¸�¨­±²¨«¶ÁÍ»³t½Á¬ ¶|èÕ®�±È¶îÏ¢¯È¶|èÁ® ±²µ¢®Ö±Èµ¢®°¶Õ¯²®¹¾ïå ¤ ®�¸�¶î³�¶¿¬x®°ª«¶|·�åßÕålÏ�¶ ±È®©±²µ»½ ±

( � æ ÷[� M * ( " � í ¾ ¬x®¹¸�Û Z æ Ý á � � ÷ " � í ¾ ¬ ®Ó¸�Û Z M Ý á � ��*m Êïá1 íÛ Z æ ÷ Z M Ý á Ê

"m � �� å ¤ ®ºÍ¢®°®Ó¸Ú±È¶ï³²µ¢¶|· ( � æ ÷[� * 8 � åa�ꨫͻ°®Ð� ¨«³©ì¹®°¯È¶É¶ÁÍ ½ ª«ª ¬»×�±Ö±²µ¢® Ø»¯Ò³ð± " Âöê¶Õ¯È¸�¨«Í»½ ±²®¹³°z�¨Ç±�³²×T;ÌÂî¹³ ±È¶ÂöÁÍ ³�¨Ð¸�®°¯´±Èµ¢®�ÂöÕÍձȯ²¨«¬¢×�±È¨­¶ÕÍɱȶº±²µ¢®�¨«Í¢Í¢®¹¯tÏ¢¯²¶�¸�× Âæ±t¼�¯È¶Á¾ ±Èµ¢®ÖØ»¯Ò³ð± " ±²®°¯È¾î³°åøçz®Ã±t±²µ»®ÖØ»¯È³�±�Âöê¶Á¯Ò¸�¨«Í»½|±È®¶ ¼ Z æ� ¾üå�{�µ»®°Í ( � æ ÷[� * ( " � í ¾ ¬x®¹¸�Û$¾éݦá � - ÷¹á " � í ¾ ¬x®¹¸�Û & Ý a � - * å��ê¨­Í Âî & Ò ¾«z¦±Èµ¢®ÌØ»¯Ò³�±¨­Í¢Í»®°¯tÏ¢¯È¶�¸�×»Âæ±�¨Ð³�ì°®¹¯²¶îz�·tµ¢¨«ª­®©±²µ»®�¶ ±²µ»®°¯Ò³t½ ¯È® -, å(�ê×¢¾¿¾¿¨«Í¢Ô¿±²µ¢®¹¾ ½Áª­ª�×¢ÏLz¢·Ë®ÖÔծñ ( � æ ÷t� * -, 8 � å¡ ål{�µ¢®�Ø»Í ½ ª¦Ï»½ ¯²±©¼�¶Áª«ª­¶|·�³�¼�¯²¶Õ¾ ü¯È¶ÁÏx¶Õ³²¨Ç±È¨­¶ÕÍù�¢å«ß?�í½ÁÍ»¸Æ±Èµ¢®º¼v½ÁÂ汩±²µ ½|±9� ½Áª«³²¶Ìª«¨­®Ó³ ¶ÕÍ ±Èµ¢® ¨«Íα²®¹¯È³²®¹Âñ²¨«¶ÁͶ ¼éµêÀêÏx®°¯ÈÏ¢ª«½ÁÍ¢®¹³�¨«ÍÆ·tµ¢¨ÐÂÒµí®Ó½ÁÂҵﶠ¼z±Èµ¢®�Ê ¬¢ª­¶�ÂÒÑ�³�¶ ¼ " °¶ê¶Á¯Ò¸�¨­Í ½|±²®Ó³�³�×¢¾ ±²¶¿ì°®¹¯²¶ å

¤ ®�¾º¶|èÕ® ¶ÕÍï±²¶º±²µ¢® Ê ¶Áµ»Í»³�¶ÕÍí¬x¶Á׻ͻ¸í¼�¶Á¯ " � ½ ¯ÈÀÌÂö�¸�®¹³¹å

�3�zõ��

Page 76: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

��� {�h»y|{��ù z�v�Dê½Æ " Q]!�y � úih � ��O\hP�½meh wR��¹%É æ\$3<HINT Û�Êø÷�Â�÷²ä ÊzÝ , P�G°4}< ' K�03; K?G,0 Ûnû�ÊÌá�ßÕ÷¹Û " á�ßÓÝ ÊzÝ /t<HINI]G3I4/P�G3INI[<�P?> ' 2�V�P�G\4b<eEHG3I û , ~Ø-, çÕÛ�ßtá � ßtá ,, ~Ø- ä Ý @gÖy3hih:j çz®Ã±�ù ä Ê ½ÁÍ»¸ ì û�Ê á¡ßÁå çz®Ã±a� ¬x®î½ Í ÛvÊø÷]Â�÷ÈùÎÝÅá " °¶�¸�®Áå7�¢¶Á¯�½í¯²®ÓÂ­èÕ®¹¸ÚèÕ®¹Âæ±È¶Á¯ m zzª­®°±Z - ÷ �°�?� ÷ Z   ¬x®Ë°¶�¸�®°·´¶Á¯Ò¸¢³�¶ ¼R� ·t¨­±²µ¢¨«Í ½ � ½Á¾¿¾º¨«Í¢Ô�¸¢¨«³�±È½ÁÍ»Âîü¶Á¼ ì ¼�¯È¶Á¾ m å½��®°Ø»Í¢®«� æ " � í ¾ ¬ ®Ó¸�Û Z æ Ý°á � � z¼�¶Á¯qån� Ô X Ö å�� ®Ãػͻ®�� " � í ¾ ¬ ®Ó¸�Û m Ýøá � � å�{�µ¢®�èÕ®¹Âñ²¶Á¯Ò³Õ� æ z»¼�¶Õ¯låÕ�"Ô X Ö�z ½ ¯È®�ÂöÕÍαȽ ¨«Í¢®Ó¸í¨«Í ½ Û " á ß Ý Ê¸�¨«¾¿®°Í»³²¨­¶ÕÍ»½ ªt³²×¢¬»³²Ï»½Á°®í¶Á¼Dà , � ·t¨Ç±Èµ ±Èµ¢®ÆÏ¢¯È¶ÁÏx®°¯²±ðÀ ±Èµ»½|±¿±Èµ¢®°¨«¯¿Ï»½ ¨«¯²·t¨Ð³²®í¨«Í¢Í¢®¹¯ºÏ»¯²¶�¸�×»Âñº¨Ð³î³²¾¿½Áª­ªSzü·tµ¢¨«ª«®®¹½ÕÂÒµÚµ»½Á³ ½îªÐ½ ¯ÈÔÁ®�¨«Í¢Í¢®°¯ Ï¢¯È¶ê¸¢×»Â汩·t¨Ç±Èµ~³�¶Õ¾¿®ÖØD¦�®¹¸ÚèÕ®¹Âæ±È¶Á¯ � å x ³ ¨­Í ±²µ¢® Ï¢¯²¶ê¶Á¼¦¶Á¼«{�µ¢®°¶Õ¯²®¹¾ �»å­ß � z¢·´® °½ÁÍÂöÕÍ»Âê«×»¸�®Ö±Èµ»½|±�׻ͻ¸�®°¯�±²µ¢® ³²®Ã±²±²¨«Í¢Ôeû , ~Ø-, çÕÛ�ß�á � ßtá ,, ~Ø- ä ÝHz¢·Ë®�¹½ Íïػͻ¸Æ½ÁÍ & ³�× ÂÒµí±Èµ»½|±t±Èµ¢®�èÕ®¹Âæ±È¶Á¯Ò³ÿ � æ á & � � æ zêµ»½ èÕ®�½�Ï»½Á¨­¯È·t¨Ð³�® Í¢¶ÁÍ^� Ïx¶Õ³²¨Ç±È¨­èÕ®�¨­Í»Í¢®°¯´Ï¢¯È¶ê¸¢×»Âæ±\zηtµ»¨­ª«®�±Èµ¢®°¨«¯�¨­Í¢Í»®°¯´Ï¢¯²¶�¸�× Âæ±Ë·t¨­±²µ � ¨Ð³ÅÏx¶Õ³²¨­±²¨«èÁ®Áåx ϻϢª­Àꨫ͢Ô� ø½ ¯²±�Û � Ý´¶Á¼ çz®°¾¿¾î½ª�¢å©õÌÛv¶Á×¢¯�¼v½ èÕ¶Á¯È¨Ç±È®©·´¶Á¯ÈÑêµ¢¶Á¯Ò³²®ÓÝø·´®ÖÔÁ®°± X m Û " á ßÓÝðÊøå

{�µ¢® " � ½ ¯ÈÀ í ª«¨«½Õ³���¬�½Á³È³²½Áª­ÀêÔÕ¶�¬ ¶Õעͻ¸ï¨«³�Í¢¶|·ë³�±²¯Ò½ ¨«ÔÁµÎ±�¼�¶Õ¯²·�½ ¯Ò¸�å ¤ ®�³�±È½ ±²®Ö¨Ç±t¼�¶Õ¯�ÂöվºÏ»ª­®°±²®°Í»®¹³È³°å

��� {�h»y|{��ù z�v�T ÇÆ " Q]!�y � P é sv!�O�Q,�7!�OiO°! é � u:h�m(hxwR��¹%Édë E Ä ' K70£EH0�� ' ;UT�G�E~"ô/t03INTBP]G\4b<HKac ' >�CdI[03>�< Ù 032:4I[<?;=03> ' $3<74 ' KN>�0�2:P�< äWX >�CD<?2

Ù mëßtáþâ , a " á ß"

a ßtá�� ßtá "" á ß ä clc �

÷ ø!ÝÆ�?ø���øÐÑ¥��óÆú�ø<��� ��ÒYõ@Ô

{�µ¢®� üª«¶ ±ÈÑê¨­Í ¬ ¶Õעͻ¸ã·�½Á³¿³²µ¢¶|·tÍ ¨«Í&Ô �}Í�ÖSz´½ Í»¸ã±²µ¢® Ê ¶Áµ¢Í ³�¶ÕÍ㬠¶Õעͻ¸ ¨­Í&Ô � � z(� ¡ Ö åË{�µ¢® í ª«¨«½Õ³���¬�½Á³È³²½Áª­ÀêÔÁ¶¬x¶Áעͻ¸~·´½Õ³ ¸¢¨«³ÈÂö|èÕ®°¯È®¹¸ï¨­Í ¸�®°Ïx®°Í»¸¢®°ÍᲪ«À ¬êÀ� ¦å í ª­¨Ð½Á³©½ Í»¸~çüåج�½Á³È³²½Áª­ÀêÔÁ¶ å í ª«¨Ð½Á³©³�®¹®°¾¿¨­Í»ÔÁª«ÀƸ¢¨«³ÈÂö|èÕ®°¯È®¹¸ï±²µ»®¬x¶Áעͻ¸�¨­Í ±Èµ¢® ß\Í}� � ³¿¬¢×�±ïÍ¢®°èÕ®°¯ÉÏ»×¢¬¢ª«¨«³²µ¢®¹¸ µ»¨«³í¯²®Ó³�×»ªÇ±ez ¨Ç±Ðáð×»³�±íÔÁ¶Á±É¨«ÍձȮ°ÔկȽ ±²®¹¸ ¨«ÍᲶ�±Èµ¢® ¼�¶Õª­Ñꪫ¶Á¯È®Ú¶ ¼Âö�¸�¨«Í¢Ôí±²µ¢®¹¶Á¯ÈÀÚ¨­Í ±Èµ¢® ¡ ��åi{�µ¢®ºØ»¯Ò³�±náð¶Õ×¢¯ÈÍ»½ ª¦Ï»½ÁÏ ®¹¯ ±È¶Æ¾º®¹ÍᲨ«¶ÁÍ í ª­¨Ð½Á³°® ³ Ï»¯²¶ê¶ ¼´³�®¹®°¾î³©±²¶ï¬ ®Ì½íÏ»½ÁÏ ®¹¯©¬êÀ�êµ»½Á͢͢¶ÕÍizx§Ö½Áª­ªÐ½ ÔÕ®°¯\z¢½ Í»¸�¬´®°¯Èª«®°Ñ|½ ¾¿Ï1ÔÇß � ßNÖ ¨­Í�ß\Í » õêå ú Íڱȵ¢®�¾¿®¹½ÁÍê·tµ¢¨­ª«®bz çüå x å5¬´½Õ³²³È½ ª«ÀêÔÁ¶¿¸�¨Ð³²Â°¶|èÁ®°¯È®¹¸É±²µ»®³È½ ¾¿®Ö¬ ¶Õעͻ¸ï¨­Íþß\Í » ��Ô­ß � Ö å({�µ¢® Ê ¶Áµ¢Í ³�¶ÕÍí¬x¶Á×¢Í ¸¢³�½ ¯È® ¼�¯²¶Õ¾ ³²¶Á¾¿®Ö¨­Íα²®¹¯²¾¿®Ó¸�¨«½ ±²®�Ïx®°¯È¨­¶�¸ Û�¬x®Ã±ð·´®°®¹Í í ª­¨Ð½Á³°® ³¶Á¬ ³�®¹¯²è|½|±È¨­¶ÕÍiz�½ Í»¸�¬�½Á³È³²½Áª­ÀêÔÁ¶î® ³�Ï¢×¢¬¢ª«¨Ð°½|±È¨­¶ÕÍ Ýæå7{�µ¢®ºÏ¢¯²¶ê¶Á¼v³ ¶Á¼ü±²µ»® Ê ¶Áµ»Í»³�¶ÕÍ ¬x¶Áעͻ¸ ¨«Í~±Èµ¢¨«³ÖÍ»¶ ±²®Ó³Ö½ ¯È® Í¢¶Á±¼�¯È¶Á¾ ±²µ»®º¶Õ¯²¨«ÔÁ¨«Í»½ÁªéÏ»½ÁÏ ®¹¯È³°z�¬¢×�±�¯Ò½|±²µ»®°¯©¼�¯²¶Õ¾ ¾¿¶Á¯È® ¯È®¹Âî¹Íα©·´¶Á¯ÈÑ�å�{�µ¢® Ï»¯²¶ê¶ ¼v³©¶|èÕ®°¯ ±²µ¢®º¬¢¨«Í»½ ¯ÈÀ ½ ª«Ï¢µ»½Á¬ ®°±½ ¯È®©¼�¯²¶Õ¾ x ÔÕ¯²®¹ª­ªSz^kü½ ¯Ò¸�À}z¢½ Í»¸ [ ®°ÔÕ®°¯�Ô­ßNÖ å«{�µ¢® " � ½Á¯²ÀîèÕ®°¯Ò³�¨«¶ÁÍí¨«³t¼�¯²¶Õ¾×Ô �Tõ°Ö å

�3�zõ »

Page 77: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

« ¬®­°¯²±�³S´ �

Ç��� �=5ê·¶ é u:h y sG� � �ãs Zv¸ �¤�°y3h?¹ w Z �¹s�h��º�\h è hg¹ésD�éu ��� {�h»y � ¢©Âñ²¶Á¬x®°¯�ß � z ���}� ß½b¾R¿�À�Á�Â+¾��

È <�P?>�M^I]<HI<Ä�Åù0}4°C^MÆ1îMR4}032 15P?I ' Ì]<iÄ>È ' > ' 2QA5CD0�ZD<?I

{é¶ê¸»½ À̷ˮַt¨«ª­ª�±È½ ª«ÑɽÁ¬ ¶Õ×�± �

ñ ­ ½Á ¤ ¨­ª«ª­¨Ð½ ¾î³�¨Ð¸�®°ÍαȨDZȨ­®Ó³ñ çL ¬ ¶Õעͻ¸ñ �ê¶Á¾¿®ÖÏ ®¹¯È³²Ïx®¹Âæ±È¨­èÕ®¹³�¶ÕÍï½Õ³�À꾿Ï�±²¶Á±²¨Ð°³

�ªñÇÍ � ���>Î ø<�<�°ø����ùÔ��Ø÷�õqö�ÒYø4ÒYø?õ@Ô�t®Ó°½ ª«ª¦±²µ ½|±�¶Á×»¯ ±Èµ¢®°¾¿®î¨«Í ±²µ¢®¿ªÐ½Á³�±Öª«®¹Âñ²×¢¯È®î·�½Á³ ±²¶ÆעϢÏx®°¯ ¬ ¶Õעͻ¸¢³Ö¶ÕÍ~±Èµ¢®î¯È½ ±²®¿¶ ¼ 032îT ¼v½Á¾º¨«ª«À ¶ ¼tÂö�¸�®Ó³ÔÁ¨«èÁ®¹Í�¨Ç±Ò³�¯È®°ªÐ½|±È¨­èծ̸�¨«³�±È½ÁÍ»ÂîÕåd¬´¶Á×¢Í ¸¢³�¶ ¼t±Èµ¢¨Ð³�¼�¶Õ¯²¾Bzé±²µ»½ ± µ¢¶Õª«¸ ¼�¶Õ¯ <<$�<?INT Âö�¸�®É¶Á¯�¼v½Á¾º¨«ª«À ¶Á¼�Âö�¸�®¹³°zø½ ¯È®±²®¹¯²¾¿®Ó¸Æע͢¨«èÁ®°¯Ò³È½ ªz¬x¶Á׻ͻ¸¢³¹å�¢ ×¢¯�Ø»¯Ò³�±�±²¶ÕÏ¢¨«Â�±²¶�¸¢½ Àƽ ¯È®�¬ ¶Õעͻ¸¢³ ¶ ¼¦±Èµ¢¨«³�¼�¶Á¯È¾ ¼�¶Á¯ ½Áª­ª ; ' 2:<�0�I Âö�¸�®¹³¹å ¤ µ¢¨«ª«®±²µ»®¹³²®�½ ¯È®�Í¢¶Á±Ë¸�¨«¯²®ÓÂæ±²ª«Àº¼�¶Á¯È¾ ×¢ªÐ½|±È®¹¸¿½Á³ÅעϢÏx®°¯´¬ ¶Õעͻ¸¢³Å¶ÁÍ¿±Èµ¢®�¯Ò½|±È®�¶ ¼�Âö�¸�®Ó³?zÎÔÁ¨«èÁ®¹Í¿±²µ¢®¹¨­¯Ë¯²®¹ª«½ ±²¨«èÁ®�¸�¨Ð³�±È½ Í Âîbz±²µ»®¹³²®�¬ ¶Õעͻ¸¢³ ¸�¶îÏ¢ªÐ½ Àí½ ÍƮӳ²³²®°Íα²¨Ð½ ª�¯È¶Áª«®�¨«Í ³�¶Õ¾º®�¶Á¼é±Èµ¢® ³�±²¯È¶ÁÍ¢ÔÕ®¹³�±tÑÎÍ»¶|·tÍï¬x¶Á׻ͻ¸¢³t¶ÕÍï¯Ò½|±È®Áå ¤ ®�·t¨«ª«ª�ÔÁ®°±±²¶º±Èµ»½|±�Ï»½Á¯�±tªÐ½|±È®°¯\z�¬¢×�±�Ø»¯Ò³�±�·´®Ö¨­Íαȯ²¶�¸�׻°®�½ Í»¸ïÏ¢¯È¶|èÁ® ±²µ¢®�­~½Á ¤ ¨«ª«ª­¨Ð½ ¾î³ ú ¸�®¹ÍձȨDZȨ­®Ó³°å

�����ü��� � �t¸��i³¦� ���t���z� ³|¸��¤�D´��z�ð� �qàq³¦�²��t®Ó°½ ª«ª�±²µ ½|± ½ºª«¨­Í¢®Ó½ ¯�°¶ê¸¢®a� ¨Ð³�³²Ï ®ÓÂè­Ø»®¹¸ï¬êÀɽ�Â�ÃÆÊ~ÔÁ®¹Í¢®°¯Ò½|±È¶Á¯�¾î½|±È¯²¨=¦BÄ å x ªÇ±È®°¯ÈÍ»½|±È¨­èÕ®°ª«Àbz�±Èµ¢®�Âö�¸�®�°½Áͬx®�³�Ïx®¹Â°¨ÇØ ®¹¸º¬êÀ ½ÖʪÃÌÛ�Ê�á,»Ý�Ï»½Á¯²¨­±ðÀ ÂÒµ¢®ÓÂÒÑ ¾î½|±È¯²¨=¦ T åY{�µ¢®�¾î½|±È¯²¨=¦FÄ ÂöÁÍ ³�¨Ð³ð±Ò³ø¶ ¼i ª­¨«Í¢®Ó½ ¯Èª­À�¨«Í»¸�®¹Ï ®¹Í»¸�®¹ÍÕ±¯È¶|·�³Ë·tµ»¨­ª«® T °¶ÁÍ»³²¨«³�±È³�¶Á¼ Êïá1Â̪«¨­Í»®¹½ ¯Èª«Ą̀­Í ¸�®°Ïx®°Í»¸¢®°Íα Âöժ­×»¾ºÍ ³°å{�µ¢®º¸�×»½ ªé¶ ¼¦±²µ»® ª«¨­Í¢®Ó½ ¯©Âö�¸�®7�7z�¸�®¹Í¢¶ ±È®¹¸ù����zx¨Ð³t±²µ»®�±²µ»® Âö�¸�® V}<?2:<?I[0�>�<�4 ¬êÀ T z ±²µ¢® ±²¯Ò½ Í»³²Ïx¶Õ³²®�¶ ¼ø±²µ»®Ï»½Á¯²¨­±ðÀ�ÂÒµ¢®¹ÂÒÑÖ¾î½|±È¯²¨=¦�¶ ¼5�ºå ú ±¦¨Ð³¦¶Á¬êèꨭ¶Õ×»³�±Èµ»½|±(��� ¨«³ø½Áª«³²¶ ½ ª­¨«Í¢®Ó½ ¯øÂö�¸�®}z|·t¨Ç±Èµ ¬¢ª«¶�ÂÒÑ�ª­®¹Í¢Ô ±Èµ Êí½ Í»¸ ¾º®Ó³²³È½ ÔÕ®ª«®°Í¢ÔÁ±²µÆÊÉá1Â�å«�¢×»¯�±Èµ¢®°¯È¾¿¶Á¯È® ®¹èÁ®°¯ÈÀîÏ»½Á¨­¯t¶Á¼¦Â°¶ê¸¢®°·´¶Á¯Ò¸¢³ m �B� ½ Í ¸ Z �ù� � ³²½ ±²¨Ð³ð¼�À (nm ÷ Z * � å x ³²ª«¨­ÔյձȪ­À³�±²¯È¶ÁÍ¢ÔÕ®°¯´¼v½ÁÂñ�¨«³�Ï¢¯È¶|èÁ®¹Íɨ«Íï±²µ¢®�Ï¢¯È¶ÁÏx¶Õ³²¨­±²¨«¶ÁÍɬx®°ª«¶|·�å

Í3�zõ¼õ

Page 78: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

gÖy3h+Neh�OÓs��ÓsvhP� =z�v� % G3I�; ' 25<]0�IaP�G°4}< �¨� Å � , 032:4b$�<�P?>�G�I �Î�,Å � , X >�CD<eEHG3;J;$G3c ' 2WV�CDG3;$4¼Äñ ë E �������ÕX >JCR<H27EHG3Ia<<$�<?INT Z �ù�ÐX ( Z ÷t� * � @ñ ë E ��Ò� ����X >�CD<?2ªEHG3I�<<$�<?INT & ÷5¾ä��Å , X >JCR<7K?<H>�K ÿ Z � � � ( Z ÷t� * & � 03254 ÿ Z � � � ( Z ÷t� * ¾«�CD0A$3<Ð>JCR<9K?03�ª<FP�03I[4 ' 2:03; ' >�Tb@

gÖy3hih:j {�µ¢®íØ»¯Ò³ð±ºÏ»½ ¯²± ¶Á¼�±²µ¢®íÏ¢¯È¶ÁÏx¶Õ³²¨Ç±È¨­¶ÕÍ�¼�¶Áª«ª­¶|·�³�¼�¯²¶Õ¾ ±²µ¢®ï¸�®ÃØ Í¢¨Ç±È¨­¶ÕÍ ¶Á¼�±²µ¢®Æ¸�×»½ÁªË¶Á¼�½~°¶ê¸¢®Áå1�¢¶Õ¯±²µ»®É³�®ÓÂöÕÍ»¸ Ï»½ ¯²±�Í¢¶ ±È®îØ»¯Ò³ð±�±Èµ»½|± ·t¨­±²µ»¶Á×�±�ª«¶Õ³È³�¶ ¼�ÔÁ®¹Í¢®°¯Ò½ ª«¨­±ðÀbzz·´®î¾î½ À~½Á³È³²×¢¾¿®e¾ � ½ Í»¸ & Ò � åïç�®°±û 5 ÿ Z �1�.� ( Z ÷t� * & �}z�½ Í»¸ û¤Ea ÿ Z �Î� � ( Z ÷t� * � �Îå�Ï�¶Á±²® ±²µ»½ ±9ÑÎ� û¤E ½ Í»¸Úµ»®°Í»Â°® ±Èµ¢® ªÐ½|±²±²®°¯¨Ð³ Í»¶ÁÍ^� ®°¾¿Ï�±ðÀÕå ¤ ®¿Í¢¶Á±²®ºÍ¢®H¦ê±©±²µ»½ ±Ö±²µ¢®º¼�¶Á¯È¾¿®°¯©¨«³Ö½Áª«³²¶ÉÍ¢¶ÕÍ^� ®°¾¿Ï�±ðÀÁå7�ê¨­Í ÂîF�ÉÒ�"� � ·´® µ ½ èÁ®�±Èµ»½|±©±²µ»®°¯È®®H¦�¨Ð³ð±Ò³ Z �Î� ³²×»Âҵڱȵ»½|± ( Z ÷t� * & ��Ò � å�{�µ¢®°Í ·Ë® µ»½ èÁ®�±Èµ»½|± mË Û & �ÜÝ ~Ø- & Z ¨Ð³ ½ÁÍ ®°ª«®°¾¿®¹ÍÕ±Ö¶ ¼Õ� ·t¨Ç±Èµ(nm ÷t� * & z»½ Í ¸Ì±ÈµÎ× ³ m � û 5 å�¢¶Õ¯�½¿³�®°± Ê � Å � , ½ Í»¸íèÁ®ÓÂæ±È¶Á¯Õ�1�,Å � , z¢ª­®°±l� a Ê ¸�®¹Í¢¶ ±È®Ö±²µ¢®�³²®Ã± ÿ � a � ����� Ê �Õå|� ¨*¦ m � û 5 å ¤ ®�ÔÁ®°±� û 5 � � û¤E �μ�¯È¶Á¾�±²µ¢®Ö¼�¶Õª­ª«¶|·t¨­Í»Ô¿³²®°¯È¨«®¹³´¶ ¼ ¼v½ÁÂñȳ �

ßÕå m a û�E � û 5 � ú ¼ ! � û¤E ±Èµ¢®°Í (nm a ! ÷t� * (nm ÷t� * a (v! ÷t� * & a"� & å� åa� m a û E � � û E � � �»¶Áª«ª­¶|·�³t³²¨­Í Âî m a !�±m a ! �z¨�Ù !� ! � å¡ åa� û E ��mý� û 5 � � �»¶Áª«ª­¶|·�³Ë¼�¯È¶Á¾ ø½ ¯²±È³ÖÛðß Ý˽ÁÍ»¸þÛ � Ý˽Á¬ ¶|èÕ®Áå� åa� û 5 ��mý� û¤E � � ��¨­¾¿¨«ª«½Á¯�±²¶ª ø½ ¯²±È³ÖÛðß Ý��æÛ ¡ Ý˽Á¬ ¶|èÕ®bzê®H¦¢Â°®°Ï�±�±²µ ½|±�µ¢®¹¯²®Ö·´®©·´¶Á¯ÈÑî·t¨­±²µï±²µ¢®�³²®Ã±�Û�á m Ý a û 5 å

�����ü��± Ý �z�eÿe´Å� � ���Õ���»�ð�£àt�¢�ð�e¸��γ|¸��¤�D´����þ�z�eÿ(´Ë�ËÿÅ�L¸����R³é�¢�[¸@ÿ ß�à�¸��x�¢�ð�e¸�ï{���� s��¹s�h��Û=z���ÇÆ�� {Îs u � �§¹ sGOÇ�°y|snm¦wg�ÓsvhP� u {ô� {Îy�!��¹sG� uÎj w�� Z �ÓsvhP�§É"!Õ' $�<?2�0�2 Ô Êø÷�Â�÷²ùbÖ , P]G\4b< �ÐX 032:4' 2:4}< ) ån� ÿ � ÷ �?�°� ÷�ÊY�bX >�CD< å >JC�c(< ' V�C�>l<?2RM^�ª<HI]03>�G3IaG�E � ' K�>JCR<a2îM^�FÌ�<?I�G�EaP�G\4b<?c(G3I[43K ' 2 � GtE�ça0��Ð� ' 2WVc(< ' V\C^>½< ) 0}PH>S;UT å @aA5CD<Õc(< ' V\C^>½4 ' K�>SI ' Ì?M^> ' G�2,G�E � ' Kn>JCR<eK?<,ã?MR<?2:P�< ( Ê E ÷ �?�?� ÷ Ê ��* X c·CD<?I[<%Ê æ ' Ke>�CD< å >�Cac(< ' V�C�><?2RM^�ª<HI[0�>�G�IlG�E � @ÐA5CD<qc(< ' V\C^>5VW<H25<HI]03> ' 2WVeE�M^2:P?> ' G�2�G�E � ' KÕ>JCR<iEHG3IN�ª03;3ZDG�;UT32:G�� ' 0�;@Ê$# Û�:�Ý H �æKJ E Ê æ : æ Xc·CD<?I[< ( Ê E ÷ �?�?� ÷ Ê ��* ' K�>JCR<�c(< ' V\C^>l4 ' KN>�I ' Ì?M^> ' G32�GtE � @{�µ¢®�­ ½Õ ¤ ¨«ª­ª«¨Ð½ ¾î³ ú ¸�®°ÍαȨDZȨ­®Ó³�¯²®¹ª«½ ±²®º±²µ»®î·Ë®¹¨­ÔÕµÕ±�¸�¨Ð³�±²¯È¨­¬¢×¢±²¨«¶ÁÍþ¶ ¼�½ÚÂö�¸�®���·t¨­±²µ ±Èµ»½|±�¶Á¼Ë±Èµ¢®ÌÂö�¸�®,����å¤ ® ·t¨«ª­ª¦¸�¶É³²¶Ì¬êÀï³�±²× ¸�Àꨭ͢Ôɱ²µ¢® c(< ' V�C�>(VW<?2:<?I[03> ' 2WV9E�M^25PH> ' G32 z Ê$# Û�Þ¢Ý H æKJ E Ê æ Þ æ zx¶ ¼¦±²µ¢®ºÂö�¸�®F�7zx½ÁÍ»¸¯È®°ªÐ½|±²¨«Í¢Ô Ê%# ±²¶ Ê #'& å x ³Ö¨«³Ö¬êÀ Í»¶|· ×»³²×»½ ªSz�·´®º·t¨«ª«ªüÏ¢¯È¶|èÁ®�±Èµ¢®î¨Ð¸�®°ÍᲨ­±ðÀÚØ»¯Ò³�±©¼�¶Õ¯Ö±²µ¢®¿¬¢¨«Í»½Á¯²À~¹½Á³²®bz�½ÁÍ»¸±²µ»®°Íƾ¿¶|èÁ®©±²¶º±²µ»® " � ½Á¯²À̹½Á³²®©ªÐ½|±È®°¯Óå

�����ü��Ü (�´��à�1g����L¸ ���z� ÿü�·¸����D³ �¢�t¸Qÿ ß�à�¸��x�¢�ð�e¸¤ ®�·t¨­ª«ª»³�±È½Á¯�±ü¬êÀ ¸¢®Ãػ͢¨«Í¢Ô�½Áͺ®¹ª«½Á¬ ¶Õ¯È½ ±²®�ÔÁ®¹Í¢®°¯Ò½|±È¨­Í»Ô�¼�×¢Í Âæ±²¨«¶ÁÍî¶Á¼�½�°¶�¸�®q�7zι½ ª«ª­®Ó¸º¨Ç±Ò³ < ) >�<H254b<�4£V}<?2:<?I[03> ' 2WVE�M^2:P?> ' G32 å ú ± ·t¨«ª­ª ¬x®Ð¯Î×¢¨­±²® ®¹èꨫ¸�®¹Íα�±²µ ½|±�±Èµ¢¨Ð³�ÔÕ®°Í¢®¹¯È½ ±²¨«Í¢Ô¿¼�עͻÂñ²¨«¶ÁÍ~Ï»¯²®Ó³�®¹¯²èÕ®¹³t½ ª«ª ¨­Í�¼�¶Õ¯²¾î½ ±²¨«¶ÁÍ ½ ¬x¶Á×¢±�±²µ»®Âö�¸�®�� Û�ע͢ª«¨«ÑÁ®©±²µ¢®Ö·´®°¨«ÔÁµÎ±�ÔÁ®°Í»®°¯Ò½|±²¨«Í¢Ô ¼�עͻÂñ²¨«¶ÁÍï·tµ¢¨«ÂҵƸ�¶ê®¹³�Í»¶ ±�±²®¹ª­ª�×»³�®?¦¢½ÁÂæ±Èª­Àî·tµ ½|±�±²µ¢®�°¶ê¸¢®©¨Ð³ÒÝæå ¤ ®·t¨«ª­ª�±Èµ¢®°ÍƯȮ°ªÐ½|±È® ±Èµ¢¨Ð³t®°ªÐ½ ¬x¶Á¯Ò½|±È® ÔÕ®°Í¢®¹¯È½ ±²¨«Í¢Ô ¼�׻ͻÂæ±È¨­¶ÕÍï¶Á¼é±Èµ¢®�Âö�¸�®©±È¶¿±²µ»½ ±�¶ ¼é¨­±È³�¸�×»½ ª å

Í3�zõ3�

Page 79: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

¤ ® ·t¨«ª­ª ¨­Íαȯ²¶�¸�׻°®�±²µ»® ®H¦ê±È®°Í»¸�®Ó¸ÚÔÁ®¹Í¢®°¯Ò½|±È¨­Í»Ôî¼�עͻÂñ²¨«¶ÁÍ ÔÕ®°ÍᲪ«ÀÁå ¤ ® ·t¨«ª«ªé³�±È½ ¯²± ¬êÀƸ�®ÃØ Í¢¨­Í»Ô̱²µ»® ®H¦ê±È®°Í»¸�®Ó¸ÔÁ®¹Í¢®°¯Ò½|±È¨­Í»Ôî¼�עͻÂñ²¨«¶ÁÍ ¶Á¼Å½É³²¨­Í¢ÔÕª­® ¬¢¨Ç± Ûp� ÝNz�½ÁÍ»¸Æ±²µ»®°Í~¸�®°Ø»Í¢® ¨Ç±©¼�¶Á¯©½Ì·´¶Á¯Ò¸Æ¨­Í ÿ � ÷¹ß�� � å ½ÁÍ»¸Æ±Èµ¢®°Í~¸¢®Ãػ͢® ±²µ»®®H¦ê±È®°Í»¸�®Ó¸ïÔÁ®°Í»®°¯Ò½|±²¨«Í¢Ô ¼�עͻÂñ²¨«¶ÁÍƶ ¼ø½¿Âö�¸�®Áå�ï{���� s��¹s�h��Û=z�76¸ÆpP � �¹{ô�R¹é{ô¹¡ux{ô�é{Îy3!T�¹sD�éuÎj wR� Z �¹svhP�äh:j�!Km¦s��&É A5CR<�c(< ' V\C^>·V}<?2:<?I[0�> ' 2�V�E�M^2:P?> ' G�2dG�E �' Ka>�CD<ÕEHG�IN�F0�;:ZDG�;UT32:G�� ' 0�;jÊ Û�:�Ý H �æKJ E Ê æ : æ @ % G�I70BÌ ' > · � ÿ � ÷¹ß��}X >JCR<ª< ) >�<H254b<�4FV}<?2:<?I[0�> ' 2�V9E�M^2:P?> ' G�2)* ÛG:z÷|Þ�ÝNX ' Ka0£ZRG3;UT325G3� ' 03; ' 2d>Sc(G§$303I ' 0bÌ?;=<HK : 0�2:4 Þ 4}<$\(2:<�4,03K<Ä)* Û�:z÷|Þ¢Ý : ' E · � Þ ' E · ß

�ï{���� s��¹s�h��Û=z�=#±ÆpP � �¹{ô�R¹é{ô¹¡ux{ô�é{Îy3!T�¹sD�éuÎj wR� Z �¹svhP�äh:j�!,+Ðh»yA¹%É�% G3Id0Ë$3<]P?>�G3I m. ( · - ÷ �?�?� ÷ · ��* �ÿ � ÷°ßb� � X >JCR<q< ) >�<?2:4}<]4qV}<?2:<?I[03> ' 2WV(E�M^2:P?> ' G�2 )- Û��ø÷[�éÝ�X ' Kq0eZDG�;UT32:G�� ' 0�; ' 2 � Ê $�0�I ' 0bÌ?;=<NK X5� �( : - ÷ �?�°� ÷z: ��*03254 � �( Þ - ÷ �°�?� ÷zÞ ��* X 4}<$\(2:<�4,03K�Ä )- Û��ø÷[�zÝ L �æ!J - )*/. Û�: æ ÷|Þ æ Ý @� ¨­Í ½ ª«ª­Àí·Ë®�¸�®°Ø»Í¢®Ö±²µ»®�®H¦ê±²®¹Í»¸�®¹¸íÔÁ®¹Í¢®°¯Ò½|±È¨­Í»Ô ¼�׻ͻÂæ±È¨­¶ÕÍï¶Á¼ ½¿Âö�¸�®a�ºå�ï{���� s��¹s�h��Û=z�Ð}ÇÆpP � �¹{ô�R¹é{ô¹¡ux{ô�é{Îy3!T�¹sD�éuÎj wR� Z �¹svhP�äh:j�! Z h?¹ {�É�% G3I�0QP�G°4}< � � ÿ � ÷¹ß�� � X >JCR<1< ) />�<H254b<�4 VW<H25<HI[0�> ' 2�V1E�M^2:P?> ' G32 ) # Û��ø÷[�éÝ�X ' K 0 ZRG3;UT325G3� ' 03; ' 2 � Ê $�0�I ' 0bÌ?;=<NK Xù� �( : - ÷ �?�°� ÷z: ��* 032:4� S( Þ - ÷ �?�°� ÷zÞ ��* X 4b<v\«25<]4�0�K<Ä ) # Û��ø÷[�zÝ .H - ò # )- Û��ø÷[�éÝ @{é¶ï¾î½ÁÑÁ®î³�®¹Í»³²®º¶Á¼Å±Èµ¢®Ì¸�®ÃØ Í¢¨Ç±È¨­¶ÕÍ»³�½Á¬ ¶|èÕ®bz�¨­±�·Ë¶Õ×¢ª«¸ µ¢®¹ª­Ï ±²¶ ³²®°®î½ÁÍ ®?¦�½Á¾¿Ï¢ª­®Õå�U˶ÁÍ»³²¨«¸¢®°¯Ö±²µ»®ÌÂö�¸�®�� ÿ �}�b� ÷°ß � ßÁ÷¹ßÁß � ÷ � ßÁß3�Îå5{�µ»®©®?¦ê±²®°Í ¸�®¹¸ïÔÁ®¹Í¢®°¯Ò½|±È¨­Í»Ô ¼�×¢Í Âæ±²¨«¶ÁÍƼ�¶Õ¯�±²µ¢¨Ð³�°¶ê¸¢®©¨Ð³ �) # Ûv�ø÷t�éÝ : - : / : © a Þ - : / Þ © a Þ - Þ / : © a Þ - Þ / : © a : - Þ / Þ © �ú ±î³�µ¢¶Õ×¢ªÐ¸ã¬x®ï¨«¾¿¾¿®¹¸�¨Ð½|±È®°ª«ÀãÂê«®¹½ ¯ ±²µ ½|±¿±²µ¢®ï®H¦ê±È®°Í»¸�®Ó¸ ÔÕ®°Í¢®¹¯È½ ±²¨«Í¢ÔÚ¼�×¢Í Âæ±²¨«¶ÁÍ Â°½Á¯²¯È¨«®¹³ ½Áª­ª´±Èµ¢®Æ¨­Í�¼�¶Õ¯²¾î½ ±²¨«¶Áͽ ¬x¶Á×¢± ½îÂö�¸�®�½ÁÍ»¸Ú¸�¶ê®¹³tÍ»¶ ± ¸�¶Ì³²¶î¨«Í ½ ÍêÀɮӳ�Ïx®¹Â°¨«½Áª­ª«Àí°ª­®¹èÁ®°¯�·´½ ÀÕåe{�µ¢®�®?¦ê±²®°Í ¸�®¹¸ÆÔÕ®°Í¢®¹¯È½ ±²¨«Í¢Ôº¼�עͻÂæ±È¨­¶ÕÍÚ¨«³Í¢¶Á± ¨«ÍձȮ°Í»¸¢®¹¸Æ±È¶É¬x® ½î·�½ ÀɶÁ¼ÅÂöÁ¾¿Ï¢¯È®¹³È³²¨­Í¢ÔÍ�¼�¶Õ¯²¾î½|±È¨­¶ÕÍ ½ ¬x¶Á×�± ±²µ¢®ºÂö�¸�®}z ¬¢×¢±©¯Ò½|±Èµ¢®°¯�½ÁÍ ®°ªÐ½ ¬x¶Á¯Ò½|±È®�·´½ À¶ ¼ü¯È®°Ï»¯²®Ó³�®¹ÍձȨ­Í»Ô¿±²µ¢®¿Âö�¸�®}z ·tµ¢¨ÐÂÒµ ·t¨«ª­ª¦Âöվ¿® ¨«Í ×»³²®Ã¼�×¢ª ¨­Í ³ð±È×»¸�Àꨫ͢Ôî±²µ»®ºÂ°¶Á¾ ¬»¨­Í»½ ±²¶Õ¯²¨Ð°³t¶Á¼ÅÂö�¸�®Ó³°å x ±©±²µ»®¶Á×¢±È³²®Ã±�·Ë®î½Á¯²®ºÍ¢¶ ±�µ¢¶ÕÏ¢¨«Í¢Ôï±²¶Æ×»³²® ±Èµ¢®°¾ ±²¶ÆÔÁª«®¹½ÁÍ ½ ÍêÀ ¨«Í�¼�¶Õ¯²¾î½|±È¨­¶ÕÍ ½Á¬ ¶Õ×�±�Âö�¸�®¹³Ö¨«Íþ½ï°¶Á¾¿Ï¢×�±Ò½|±È¨­¶ÕÍ»½ ª«ª­À®�;Ì°¨­®¹ÍÕ±�¾î½Á͢͢®°¯Ó姩¨«èÁ®°Íֱȵ¢¨Ð³z®¹ª«½Á¬ ¶Õ¯È½ ±²®ø¯È®°Ï¢¯È®¹³²®°ÍαȽ ±²¨«¶ÁÍÖ¶ ¼¢½�°¶�¸�®bz ¨­± ³²µ¢¶Á×¢ªÐ¸ÖÍ¢¶Á±éÂöվº®Ë½Á³z½�³�×¢¯ÈÏ¢¯È¨«³²®¦±²µ ½|±éÔÕ¨­èÕ®°Í©±²µ»®Å®H¦ê±È®°Í»¸�®Ó¸ÔÁ®¹Í¢®°¯Ò½|±È¨­Í»Ôî¼�עͻÂñ²¨«¶ÁÍ ¶ ¼Å½ïÂö�¸�®ª� ·Ë®ºÂ°½ÁÍ ¸�®¹¯²¨«èÁ®�±Èµ¢®¿®H¦ê±²®¹Í»¸�®Ó¸ ÔÁ®¹Í¢®°¯Ò½|±È¨­Í»Ôî¼�עͻÂñ²¨«¶ÁÍ~¶Á¼Å¨­±È³Ö¸�×»½Áª å x ¼Ü±²®°¯½ ª«ª åü½ ª«ª�±²µ¢®�¨«Í�¼�¶Õ¯²¾î½|±È¨­¶ÕÍí¶Á¼|� ¨Ð³t®°¾ ¬ ®Ó¸¢¸�®¹¸ï¨«ÍᲶ ) # Û��ø÷[�éÝNz�³�¶�� °½ÁÍï¬x®�¸�®¹¯²¨«èÁ®Ó¸Ì¼�¯È¶Á¾ ) # z:��� ¹½ ÍƬx®¸�®¹¯²¨«èÁ®Ó¸Æ¼�¯²¶Õ¾ �7z�½ Í»¸ ػͻ½ ª«ª«À ) # & ¹½ Í~¬x®¿¸�®°¯È¨­èÕ®¹¸Æ¼�¯È¶Á¾ ����å�{�µ»® ÔÁ®¹Í¢®°¯Ò½ ª«¨«ì°®¹¸d­ ½Á ¤ ¨­ª«ª­¨Ð½ ¾î³ ú ¸�®°ÍαȨDZðÀáð×»³�±üÔÁ¨«èÁ®Ó³ø½ Í¿®H¦�Ï¢ª«¨«Â°¨Ç±ø¼�¶Õ¯²¾ ¶ ¼x±²µ¢¨Ð³ø¯Ò½|±²µ»®°¯ø¶Á¬êèꨫ¶Á×»³¦³�±È½|±È®°¾¿®°ÍαÓå½{�µ¢®�³�±²¯È®°Í»Ô ±²µ¿¶Á¼»±²µ»®�¯²®Ó³�×»ªÇ±øª«¨­®Ó³ø¨­Íº±Èµ¢®�¼v½ÁÂñ±²µ ½|±�±²µ¢®Ö¯È®°ªÐ½|±È¨­¶ÕÍ»³�µ»¨­ÏɱȽ ÑÕ®¹³�½ Íí®¹³²Ï ®ÓÂèн ª«ª­À̳²¨«¾ºÏ»ª­®�Â꫶ճ²®¹¸Ì¼�¶Á¯È¾��ø¶ÁÍ¢® ±²µ ½|±t·t¨­ª«ª�±²×»¯²Íï¶Á×�±�±È¶ ¬x®�®¹³²Ï ®ÓÂèн ª«ª­À½ ¾¿®¹Í»½ ¬¢ª«®©±²¶¿¾î½ Í¢¨«Ï¢×¢ªÐ½|±È¨­¶ÕÍ»³tªÐ½|±È®°¯t¶ÁÍzå{�µ¢®�ÂïÈ×^¦Ì¶Á¼�±²µ¢®Ö¨Ð¸�®°ÍαȨDZðĄ̀г�³�¶Õ¾¿®©³²¶Á¯²±´¶Á¼é½K)[� ¨«³ÈÂïȮñȮ£�»¶Á×¢¯È¨­®¹¯�{z¯Ò½ Í»³�¼�¶Á¯È¾e+ÌÛ�¶Õ¯ � ½Á¸»½ ¾î½ ¯Ò¸î±È¯È½ÁÍ»³ð¼�¶Õ¯²¾ ¶Õ¯¤ ½ ªÐ³�µº±²¯Ò½ Í ³ð¼�¶Õ¯²¾BzÕ¸¢®°Ïx®°Í»¸�¨«Í¢Ô�¶ÕͺÀÕ¶Á×¢¯Åª­¶|Àν ª­±²¨«®¹³ÒÝæå ú Í ³ð±È®¹½Á¸º¶Á¼ ¼�¶�ÂÃ× ³�¨«Í¢Ô�¶ÕÍ ±Èµ¢®�¼�עͻÂñ²¨«¶ÁÍ ) # Ûv�ø÷t�éÝü·Ë®t·t¨«ª­ª¼�¶�ÂÃ×»³�¶ÁÍƱȵ¢®�¼�עͻÂñ²¨«¶ÁÍ ) # Ûv� a �Å÷t� áÎ�éÝÃål¬Ë®°¼�¶Á¯È®�³²½ Àꨫ͢Ôî·tµ»½ ±�±²µ¢¨Ð³t±È¯È½ÁÍ»³�¼�¶Á¯È¾ ¸�¶ê®¹³�±²¶î±Èµ¢® ÔÕ®°Í¢®¹¯È½ ±²¨«Í¢Ô¼�עͻÂñ²¨«¶ÁÍ ¶Á¼Å½ÌÂö�¸�®}z ·´®�·t¨«ª­ª¦¸�®Ó³²Â°¯²¨«¬ ® ·tµ»½|± ±²µ¢® ±²¯Ò½ Í»³�¼�¶Á¯È¾ ¸�¶ê®Ó³t±²¶É±²µ¢® ÔÁ®¹Í¢®°¯Ò½|±È¨­Í¢Ô¿¼�׻ͻÂæ±È¨­¶ÕÍ ¶ ¼ü½É³²¨«Í¢ÔÁª«®èÁ®ÓÂæ±È¶Á¯ m å�Å{�� �"!·=���Ç ) - Û�� a �Å÷t�Úá��éÝ ^0 ò21 E 3 -4365 Ûðá�ß Ý87 - 3 089 ) 0 Û��ø÷[�éÝ �

Í3�zõ3Í

Page 80: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

gÖy3hih:j Ï�¶ ±È®Ö¬ÎÀï¸�®ÃØ Í¢¨Ç±È¨­¶ÕÍƶ ¼ )- ±²µ»½ ±) - Ûv� a �ü÷[�Úá�� Ý �:æ!J - ) * . ÛG: æ a Þ æ ÷z: æ á¨Þ æ Ý

�:æKJ -

H : æ a Ûðá�ß Ý * . Þ æ J �í ¦�Ï»½ÁÍ»¸�¨«Í¢Ôã±Èµ¢®þ¯²¨«ÔÁµÎ±Æµ»½ Í ¸ ³²¨«¸�®þ½ ¬x¶|èÁ® ·Ë® ÔÁ®°±Æ½ ³²×¢¾ ¶ ¼ � � ±È®°¯È¾¿³ï¶Á¼�±²µ¢® ¼�¶Õ¯²¾ ³<; - ç<çÇç6; � z©·tµ¢®°¯È®; æ � ÿ : æ ÷zÞ æ � ½ Í ¸Ì±Èµ¢®�³�¨«ÔÁÍƨг�¶�¸¢¸ï¨�Ù ±²µ¢®¹¯²®Ö¨Ð³�½ Íï¶�¸¢¸ïÍÎ×»¾ ¬x®°¯�¶Á¼é¨«Í»¸�¨ÐÂî¹³lå˳²×»Âҵɱȵ»½|±�·tµ»®°¯È®=; æ Þ æ ½ÁÍ»¸· æ ßÁå ç�®Ã±²±²¨«Í¢Ô Z � ÿ � ÷¹ß�� � ¸�®¹Í¢¶ ±È®�±²µ¢® ¨­Í ¸�®H¦Ú¶ ¼¦±Èµ¢¨«³©³²×¢¾ ¶ ¼ � � ±²®¹¯²¾î³°zx½ÁÍ»¸ ³²®Ã±²±²¨«Í¢Ô>; æ Þ æ ¨­¼ C æ ßbz·´®Ö³²®°®©±Èµ»½|±%; æ ") ò . ÛG: æ ÷zÞ æ Ý�½ Í»¸í±Èµ¢®�³�¨«ÔÁÍ飼Íí¼�¯È¶ÁÍαt¨Ð³�¶ê¸»¸í¨KÙ ($m ÷ Z * ßÁå|{�µê×»³t·´®Öµ»½ èÁ®

�:æ!J -

H : æ a Û�á�ßÓÝ *?. Þ æ J ^0 ò21 E 3 -63 5 Û�á�ßÓÝ@7 - 3 089�:æ!J -) ò . Û�: æ ÷|Þ æ Ý ^0 ò21 E 3 -43 5 Ûðá�ßÓÝ@7 - 3 0A9 ) 0 Ûv�ø÷t�éÝ �

{�µ¢¨Ð³tÀꨭ®¹ª«¸»³´±²µ¢®�ª«®°¾¿¾î½¢å

��� {�h»y|{��ù=z��êÇÆ Ä {ô� {Õy3! é s$ÃÕ{7¹ ! Z � s é�é s�!D�ßO ¸ ¹é{ô�¤�¹sG� � Î*êx}�ÏÖÉ A5CR<ª< ) >�<H254b<�4ÐVW<?2:<?I[03> ' 2WV£E�M^2:P?> ' G32�GtE0,P�G\4b< � 03254 ' >�Ka43MR03; ��� K?03> ' E�T�>JCR< ' 4}<H2î> ' >ST¼Ä

) # & Ûv�ø÷t�éÝ ß� �ª� ) # Ûv� a �ü÷[�ïá��éÝ �

gÖy3hih:j {�µ¢®ÖÏ¢¯²¶ê¶Á¼z¼�¶Áª«ª«¶|·�³�®¹½Á³²¨«ª­Àî¼�¯È¶Á¾. ü¯È¶ÁÏx¶Õ³²¨Ç±È¨­¶ÕÍ�Í¢å«ß�½ Í»¸ïç�®¹¾¿¾¿½FÍ»å » åYÏ�¶ ±È®Ö±²µ»½ ±) # Û�� a �Å÷t�Úá��éÝ ^- ò # ) - Û�� a �ü÷t�ÆáÎ�éÝ

^- ò # ^0 ò21 E 3 -43 5 Û�á�ßÓÝ@7 - 3 089 ) 0 Ûv�ø÷t�éÝ Ûv¬´ÀÉçz®°¾¿¾î½ªÍ¢å » Ý ^- ò # ^0 ò # & ) 0 Û��ø÷[�éÝ a ^- ò # ^0 ñò # & Ûðá�ß Ý87 - 3 089 ) 0 Û��ø÷[�éÝ � �ª� ) # Û��ø÷t� Ý a"� ÷

·tµ¢®¹¯²®�±²µ¢® Ø»¯Ò³ð±´Ï»½ ¯²±Ë¶Á¼�±²µ¢®©ªÐ½Á³�±Ë®°¯Î×»½ ±²¨«¶ÁĮ́г´¬êÀ¿¸¢®Ãػ͢¨­±²¨«¶ÁÍí¶ ¼�±Èµ¢® ®?¦ê±²®°Í ¸�®¹¸ÉÔÁ®°Í»®°¯Ò½|±²¨«Í¢Ô�¼�׻ͻÂæ±È¨­¶ÕÍí½ Í ¸î±²µ»®³²®¹ÂöÕÍ»¸íÏ»½ ¯²±�½ Ï¢Ï¢ª«¨«®¹³� ü¯È¶ÁÏx¶Õ³²¨­±²¨«¶ÁÍ�Í»å­ß©±È¶º®¹èÁ®¹¯²À Z Ò�ù����å«{�µ»®Ö±²µ¢®¹¶Á¯È®°¾ ¼�¶Õª­ª«¶|·�³°å

�����ü��� (�´��CB ³ø�:Ý �²���²��³|µ �,DÎ���L¸Ë�¢� �¢���z�¤ ® Í¢¶|· ¯È®Ã±È×¢¯ÈÍ ±²¶É±²µ¢®¿ÔÕ¶Õ½ ªé¶ ¼Ë³�±²× ¸�Àꨭ͢Ôí±²µ»® ·´®°¨«ÔÁµÎ±©¸¢¨«³�±²¯È¨­¬»×�±²¨«¶ÁÍ ¶ ¼Ë½íÂö�¸�®ª�ºå9{�µ»® ¼�¶Õª­ª«¶|·t¨­Í»ÔRz�³�¨«¾¿Ï¢ª«®Ï¢¯È¶ÁÏx¶Õ³²¨Ç±È¨­¶ÕÍï³²µ¢¶|·�³Ë±²µ ½|±�·´®©µ ½ èÁ®Ö¾î½Á¸�®�³²¶Á¾¿®ÖÏ¢¯²¶ÕÔÁ¯È®¹³È³Ë½Áª­¯È®¹½Õ¸�À��gÖy3h+Neh�OÓs��ÓsvhP� =z�! ý% G3Ia<<$�<?INTª; ' 2:<�0�IÐP�G°4}< �ÐX c(<9CD00$�< : � Ê # ÛGÞ ï :xÝ ") # Û�:é÷ �?�°� ÷z:é÷zÞ�÷ �°�?� ÷|Þ�Ý @

Í3��� �

Page 81: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

gÖy3hih:j {�µ¢® Ï¢¯È¶ÁÏx¶Õ³È½ ª�¼�¶Õª­ª«¶|·�³¿®¹½Õ³�¨«ª­À ¬ÎÀ ¨­Í ³�Ïx®¹Âñ²¨«Í¢Ô�±²µ»® ¯²¨«ÔÁµÎ±îµ»½ÁÍ»¸ ³�¨Ð¸�®Áå ¡ Í»¸¢®°¯Ì±Èµ¢®~³²×¢¬»³�±²¨­±²×�±È¨­¶ÕÍ: æ : ½ÁÍ»¸�Þ æ Þ5z¢·´®Öµ»½ èÁ®) # ÛG:z÷ �?�?� ÷z:z÷|Þ�÷ �?�°� ÷zÞ¢Ý ^- ò # : � ~FEFG o - s Þ EFG o - s

: � ^- ò # ÛGÞ ï :xÝ EFG o - s : � �^ æ!J E

^- ò #�H EIG o - s Jiæ Û�Þ ï :�Ý æ : � �^ æ!J E Ê æ Û�Þ ï :�Ý æ : � Ê%# Û�Þ ï :�Ý �

{�µ¢®�­ ½Õ ¤ ¨«ª­ª«¨Ð½ ¾î³ ú ¸�®°ÍαȨDZðÀíÍ¢¶|·¡¼�¶Áª«ª«¶|·�³�®¹½Á³²¨«ª­À �

��� {�h»y|{��ù=z�!=¸Æ ! Z � s é�é sv!R�ßO ¸ ¹ {ô�¤�¹sG� � Î*êx}�ÏÖÉÊ # & ÛGÞ�Ý ß

� �ª� Û�ß a Þ¢Ý � Ê # a ßtá×Þß a Þ c �gÖy3hih:j {�µ¢® Ï¢¯È¶ÁÏx¶Õ³²¨­±²¨«¶ÁÍ ·´® áð× ³ð± Ï¢¯È¶|èÁ®Ó¸Øz ü¯È¶ÁÏx¶Õ³²¨Ç±È¨­¶ÕÍ Í¢å �Dz ±È®°ª«ª«³ × ³ ±Èµ»½|± Ê #'& Û�Þ¢Ý ß � ) # & ÛðßÕ÷ �°�?� ÷°ßÕ÷zÞ�÷ �°�?� ÷|Þ�ÝÃå¨Ï�¶|·�z�½ÁϢϢª«Àꨭ͢Ôã±²µ¢® ÔÁ®°Í»®°¯Ò½ ª«¨­ì¹®¹¸Q­ ½Á ¤ ¨­ª«ª«¨«½Á¾¿³í¨Ð¸�®°ÍᲨ­±ðÀàÛv{�µ¢®¹¶Á¯È®°¾ Í¢å©õ ÝHz·´®©Ôծñ ) # & ÛðßÕ÷ �°�?� ÷¹ßÁ÷zÞ�÷ �?�?� ÷|Þ�Ý ß

� �ª� ) # Ûðß a Þ�÷ �°�?� ÷¹ß a Þ�÷°ßtá×Þ�÷ �?�°� ÷°ßtá×Þ¢Ý �� ¨­Í ½ ª«ª­À⦆ϢϢª«ÀꨭͻÔF ů²¶ÕÏ ¶Î³�¨­±²¨«¶ÁÍ�Í¢å �º½ÁÔÕ½Á¨­Íiz�·´®Öµ»½ èÁ®

) # ÝÃÛ�ß a Þx÷ �?�°� ÷°ß a Þx÷¹ß�á¨Þ�÷ �°�?� ÷¹ßtá¨Þ¢Ý Ûðß a Þ�Ý � Ê # Û²Ûðß�á×Þ¢Ý ï Ûðß a Þ�Ý²Ý � ü×¢±�±²¨«Í¢Ô¿±Èµ¢®�½ ¬x¶|èÁ® ±²¶ÕÔÁ®Ã±Èµ¢®°¯\z�·´®©Ôծñ�±²µ»®Ö±²µ¢®¹¶Á¯È®°¾Æå

ú Í ±Èµ¢®¿½ Ï¢Ïx®°Í»¸¢¨*¦ ±È¶Ì±Èµ¢¨«³Öª«®¹Âñ²×¢¯È®bz�·´® ®?¦ê±²®°Í ¸Ú±²µ»® ¬x¶Á×¢Í ¸ ½Á¬ ¶|èÕ®�±²¶í±²µ¢® " � ½ ¯ÈÀƹ½Á³²®Áå ¤ ®º³�±È½ ±²® ±²µ¢® " � ½Á¯²ÀèÁ®¹¯È³²¨«¶ÁÍí³²¶º±²µ»½ ±�·Ë®�¹½ ÍƸ�¨«³ÈÂÃ× ³²³´±Èµ¢®�¾¿¶Á¯È®©ÔÕ®°Í¢®¹¯È½Áª�¯²®Ó³�×¢ª­±�½ Í ¸É¨­±È³t¨«¾¿Ï¢ª«¨«Â¹½|±²¨«¶ÁÍ ³°å

��� {�h»y|{��ù=z�v� Ñ Æ " Q]!�y �¸ ! Z � s évé sv!D�ßO ¸ ¹ {7�¤�Ós�� � ÉÎ% G�IF0�"ô/t0�INT�; ' 25<�03IªP]G\4b< � GtE7Ì?;=G\P4J�;$<H2�V�>�C ÊYX c(<CD00$�< Ê # & Û�Þ¢Ý Ûðß a Û " á ßÓÝ�Þ¢Ý �

� �ª� Ê$# a ßtá¨Þß a Û " á ß Ý�Þ c �

{�µ¢®q­~½Á ¤ ¨«ª«ª­¨Ð½ ¾î³ø¨Ð¸�®°ÍαȨDZðÀ¿³�µ»¶|·�³ ±²µ»½ ±ü±²µ¢®�·Ë®¹¨­ÔյձŸ¢¨«³�±²¯È¨­¬»×�±²¨«¶ÁÍ¿¶ ¼�½Öª«¨­Í»®¹½ ¯ËÂö�¸�®�°½ÁÍî¬ ® ÂöÁ¾¿Ï¢×¢±²®¹¸ ¼�¯È¶Á¾±²µ»® ·´®°¨«ÔÁµÎ±©¸¢¨«³�±²¯È¨­¬»×�±²¨«¶ÁÍ ¶ ¼Å¨­±È³Ö¸�×»½Áªv��Ï�¶ ±²®}z�±²µ¢¨Ð³©¨«³�±²¶Á±È½Áª­ª«ÀÚÍ¢¶ÁÍD� ±È¯²¨«èꨫ½Áªi�t·Ë®ºÂ°½ÁÍ~³�®¹® Í»¶É¶Á¬êèꨫ¶Á×»³ ¯²®Ó½Á³²¶ÁÍ·tµêÀº³²Ïx®¹Âè­¼�ÀꨭͻÔ�±²µ»®�·´®°¨«ÔÁµÎ±Ë¸�¨Ð³ð±È¯²¨«¬¢×�±È¨­¶ÕÍ̶ ¼·�7zê³²µ¢¶Á×¢ªÐ¸¿ØD¦º±²µ»® ·´®°¨«ÔÁµÎ±Ë¸�¨Ð³�±²¯È¨­¬¢×¢±²¨«¶ÁÍ¼·���tå ú Íí½ ³²®°Í»³²®t±²µ»®¨Ð¸�®°ÍᲨ­±ðÀ ³²×¢ÔÁÔÕ®¹³�±È³t±Èµ»½|±Ö½ ÍêÀï±ð·Ë¶Éª­¨«Í¢®¹½Á¯©Â°¶�¸�®¹³ ¶ ¼Å½ÉÔÁ¨«èÁ®°Í~·Ë®¹¨­ÔÕµÕ±Ö¸�¨Ð³ð±È¯²¨«¬¢×�±È¨­¶ÕÍ~½ ¯È®�®¹³È³²®°Íα²¨Ð½ ª«ª­Àï±Èµ¢®º³È½ ¾¿®}z¾¿¶ ±È¨­è|½|±È¨­Í»Ô ±Èµ¢®Ö¼�¶Áª«ª«¶|·t¨­Í¢Ôª¯Î×¢®Ó³ð±È¨­¶ÕÍ Û�±²µ¢®�½ÁÍ»³�·´®°¯�±È¶¿·tµ¢¨«Âҵƨг�Í¢¶ ±�¶Õ¬êèΨ«¶Á× ³Å±È¶ª­ ½Á¸�µê× ÝÃå

Í3���¢ß

Page 82: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

K$L ì<ðNM`ï OQPTñ � y|w {1h»y r·! é OÓ{Pæ �»¶Á¯Ö½ ÍêÀÆÏ»½ ¨«¯©¶ ¼ " � ½ ¯ÈÀÚÂö�¸�®¹³9� - ½ÁÍ»¸�� / ¶ ¼Å¬»ª­¶�ÂÒÑƪ­®¹Í¢Ô ±Èµ~Ê�±Èµ»½|±Öµ»½ èÕ®�±²µ»®³È½ ¾¿® ·´®°¨«ÔÁµÎ± ¸�¨Ð³�±²¯È¨­¬¢×¢±²¨«¶ÁÍizx±²µ»®°¯È® ®?¦ê¨Ð³�±È³�½ÉÏ ®¹¯²¾ ×�±È½ ±²¨«¶ÁÍ 9 � Ô Ê5Ö½Ù Ô Ê5Ö¦³²×»Âҵڱȵ»½|± Z (DC - ÷ �?�?� ÷ C ��* �Î� -¨KÙ ³�× Âҵɱȵ»½|± Z � �(GC = o æ s ÷ �?�?� ÷ C = o � s * �B� / å¤ ®ºÍ»¶|· ®H¦¢½ ¾¿¨«Í¢® ±Èµ¢®º®H¦¢½ÁÂñ ¼�¶Õ¯²¾ ¶Á¼ü±²µ¢®¿¯È®°ªÐ½|±È¨­¶ÕÍ»³�µ»¨­Ï ¶Õ¬�±È½Á¨­Í»®¹¸ ¬x®Ã±ð·´®°®¹Í ±Èµ¢®¿·Ë®¹¨­ÔÕµÕ±Ö¸�¨Ð³ð±È¯²¨«¬¢×�±È¨­¶ÕÍ~¶ ¼´½Âö�¸�®�½ÁÍ»¸Æ¨­±È³�¸�× ½ ª å x ³�¨­ÍƱȵ¢®�°½Õ³�®�¶Á¼é±Èµ¢®�¯È®°ªÐ½|±È¨­¶ÕÍ»³�µ»¨­ÏƬx®Ã±ð·´®°®°Íï±Èµ¢®�®H¦ê±È®°Í»¸�®Ó¸�Û�®¹ª«½Á¬ ¶Õ¯È½ ±²®�� Ý¿ÔÕ®°Í¢®¹¯È½ ±²¨«Í¢Ô¼�עͻÂñ²¨«¶ÁÍ»³´¶Á¼é½ °¶�¸�®©½ÁÍ»¸Ì¨­±È³�¸�× ½ ªSzê±²µ¢®©®H¦¢½ÁÂñ˼�¶Õ¯²¾ ¶Á¼�±²µ¢®Ö¯È®°ªÐ½|±È¨­¶ÕÍ»³�µ»¨­Ïî±È×¢¯ÈÍ»³´¶Á×�±´±²¶º¬ ®�³²¨­¾¿Ï¢ª«®Ö½ Í»¸�¯Õ×»¨Ç±È®×»³²®Ã¼�×¢ª å ú ÍïÏ»½ ¯²±²¨ÐÂÃ×»ª«½Á¯°zê±Èµ¢®�·Ë®¹¨­Ôյαt¸¢¨«³�±²¯È¨­¬»×�±²¨«¶ÁÍƶ ¼é±²µ¢® ¸�×»½ ª�°¶�¸�®�¨«³½áð× ³ð± ½ºª«¨­Í»®¹½ ¯�¼�׻ͻÂæ±È¨­¶ÕÍï¶Á¼é±Èµ¢®�·´®°¨«ÔÁµÎ±¸�¨Ð³ð±È¯²¨«¬¢×�±È¨­¶ÕÍƶ ¼z±Èµ¢®�Ï¢¯È¨­¾î½Áª�Âö�¸�®bz ½Á³�·´®©Í»¶ ±²®Ö¬x®°ª«¶|·�å

è h»y3h évé !�y � =z�v�x�ä% G3Iª<�$3<?INT§"Î03254 Ê >�CD<?I[<�< )}' KN>vKª032 Û�Ê a ßÓÝ�à Û�Ê a ß Ý I[03> ' G32503;|�ª03>SI '*) K�MRP�C�>�CD03>>�CD<YEHG3;J;$G3c ' 2WV7CDG�;=4�K<Ä È <?> !� ( Ê E ÷ �?�°� ÷ Ê ��* Ì�<£>�CD<£c(< ' V\C^>e4 ' KN>SI ' ÌHM^> ' G32ùGtE£0�"ô/t03INTÐ; ' 2:<�0�I£P�G°4}< � GtE£Ì?;=G\P4J;=<?2WVb>JC ÊYX 03254ª;=<?> mÎ ( � E ÷ �?�°� ÷[� � * Ì�<�>JCR<�c(< ' V\C^>l4 ' KN>�I ' Ì?M^> ' G321G�E ��� @FA5CD<?2m� ßÊ E a ç<çÇç a Ê � ! �% M^IN>JCR<HIN�ªG3I[< X >�CD<a�F0�>�I '*) àÿiX æ M � ' KqV ' $3<?2�Ì?T X æ M H æ� J E H � ~ Mæ ~ � J H M � J Ûðá�ß Ý|� Û " á ß Ý æ ~ � @gÖy3hih:j �ꨫͻ°®�� æ ¨«³ ±²µ»®Æ°¶ê®�;ÌÂè«®°Íα¿¶ ¼QÞ æ ¨­Í Ê # & ÛGÞ�ÝHzÅ·´®íÍ»®°®¹¸ã±²¶ ®H¦¢½ ¾¿¨«Í¢®í±²µ¢®ÆÂöê®�;Ì°¨­®¹ÍÕ±¿¶ ¼~Þ æ ¨«Ío - uYo , ~Ø- sSRHs 5H #TH Ê #4} -N~ R- uYo , ~Ø- sSR ~ å ¤ ¯È¨Ç±È®Ì±²µ»¨«³7¯Î×»½ ÍᲨ­±ðÀþ½Á³ -H #UH HWV � � Ê M Û�ß a Û " á ßÓÝeÞ�Ý � ~ M Û�ß�á Þ¢Ý M åù{�µ»®Âöê®<;î°¨­®¹Íα´¶Á¼?Þ æ ¨«Í̱ȵ¢¨«³�³²×¢¾ ¨Ð³Å¶Õ¬�±È½Á¨­Í¢®Ó¸É½Õ³ü±Èµ¢®©Â°¶ê®�;ÌÂè«®°Íα�¶ ¼gÞ@�˨«Í̱ȵ¢®©®H¦�Ï»½ Í ³�¨«¶ÁÍ̶Á¼ËÛðßÅáÆÞ�Ý M ±²¨«¾¿®¹³Ë±²µ»®Âöê®<;î°¨­®¹Íα�¶Á¼RÞ æ ~ � ¨«Íï±²µ¢®�®?¦êÏ ½ Í»³²¨­¶ÕÍɶÁ¼�Û�ß a Û " á ßÓÝeÞ¢Ý�� ~ M z ³�×¢¾¿¾¿®¹¸ï×¢Ïƶ|èÕ®°¯#���1Ô å�Ö å ¤ ®Ö±²µê×»³�ÔÁ®°± �

� æ ß� �ª�

�^M J E Ê M

æ^� J E a Êíá Våéá�� c a V � c Û " á ßÓÝ æ ~ � Ûðá�ß Ý � ß� �ª�

�^M J E Ê M X æ M

{�µ¢®�°¶Á¯È¶Áª«ª«½Á¯²Àº¼�¶Áª«ª«¶|·�³Å¼�¯È¶Á¾ ±²µ¢®Ö¼v½ÕÂæ±�±²µ ½|±Ð� �ª� Ê E a ç<ç<ç a Ê � åú Íí±²µ¢®�¯È®¹³�±t¶ ¼z±Èµ¢¨Ð³tª­®ÓÂæ±È×¢¯²®Ö·´®Ö·t¨­ª«ª�¸�®¹³ÈÂïȨ«¬ ®îÛ�·t¨­±²µ»¶Á×�±�Ï¢¯È¶ê¶ ¼ÈÝű𷴶îÂöÁÍ ³�®\¯Õ×»®°Í»Â°®¹³´¶ ¼é±²µ¢¨Ð³t®H¦�Ï¢ª«¨ÐÂè­±´¼�¶Õ¯²¾ ¶ ¼±²µ»®�­ ½Á ¤ ¨­ª«ª­¨Ð½ ¾î³ ú ¸�®¹ÍᲨ­±ðÀÁå

�ªñ4ö Î õqø�ø�ú�Ò ÷ùø�ÔgÒRÑ«ø�Ý�ÿvÒ|ø��7ö �Ð�� ¯� ���,÷�õ@Ô

�t®Ó°½ ª«ª ±²µ¢®ÖÍ¢¶Á±²¨«¶ÁÍ̶Á¼é½ Í,­d�£� Ûv­ ½�¦�¨­¾ ×¢¾Ê��¨Ð³�±È½ Í Âî£��®°Ï»½Á¯È½Á¬¢ª­® Ýü°¶ê¸¢®Áå|{�µ¢®¹³²®ÖÂö�¸�®Ö½ ¯È®�Âö�¸�®Ó³Å±Èµ»½|±�¾¿®°®°±±²µ»®a�ꨭͻÔÁª«®Ã±²¶ÕÍí¬x¶Á׻ͻ¸Øz»¨ å ®Áå$z�µ»½ èÁ®�½º¾¿¨­Í¢¨«¾ ×»¾¤¸�¨Ð³�±È½ Í Âî֮°¯Î×»½Áª�±²¶îÊïáΠa ßbz¢·tµ¢®¹¯²®ÖÊ ¨«³�±Èµ¢®�¬¢ª«¶�ÂÒÑ̪­®¹Í¢Ô ±Èµ½ Í ¸Î ¨Ð³Ö±²µ»®Ì¾¿®¹³È³²½ÁÔÁ®ºª­®¹Í¢Ô ±Èµ�¶ ¼´±²µ¢®Ì°¶ê¸¢®Áå ú Í ±Èµ¢¨«³ ³�®ÓÂæ±È¨­¶ÕÍizz·´®î·t¨­ª«ªÅ¸�®Ó³²Â°¯²¨«¬x®¿±²µ¢®î·´®°¨«ÔÁµÎ± ¸�¨Ð³ð±È¯²¨«¬¢×�±È¨­¶Õͼ�עͻÂñ²¨«¶ÁÍã¶Á¼�ª­¨«Í¢®Ó½ ¯Ð­d�£��°¶�¸�®¹³ ®H¦¢½ÁÂñ²ª«Àbz ¼�¶Á¯ ®°èÁ®¹¯²À Ê�½ Í»¸ Â1�d{�µ¢¨Ð³ ¶Õ×¢ÔÁµÎ±�±È¶ ¬ ®ï³�×»¯²Ï¢¯È¨Ð³�¨«Í¢ÔRz¦³²¨­Í»Â°®Ì±Èµ¢¨«³¨«¾ºÏ»ª­¨«®¹³¦±Èµ»½|±´½ ª«ªR­ù�9�¿Âö�¸�®¹³üµ»½ èÁ®´±²µ»®�³²½Á¾¿®´·´®°¨«ÔÁµÎ±Å¸�¨Ð³�±²¯È¨­¬¢×¢±²¨«¶ÁÍî½ Í»¸º·´®tµ»½ èÁ®�Í¢¶�Ï»¯²¨«¶Á¯ø¯È®¹½Õ³�¶ÕÍ ±È¶�¬ ®¹ª­¨«®°èÕ®³²¶��|{�µ¢®ÖØ»¯Ò³ð±�³�±²®¹Ï飼ÍƶÁ×¢¯tÏ»¯²¶ê¶ ¼ ¨«³t½¿³²¨­¾¿Ï¢ª«®�¬¢×�±�³²×¢¯ÈÏ¢¯È¨«³²¨­Í»Ô ¼v½ÕÂæ±¹ågÖy3h+Neh�OÓs��ÓsvhP� =z�v�D� ë E � ' Ka0ª; ' 25<�03I�Å>V�11P�G°4}< X >�CD<?2�K?G ' K ' >�Ka43MR03; ��� @

Í3��� �

Page 83: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

gÖy3hih:j {�µ¢®�Ï¢¯È¶Î¶Á¼é¨Ð³�½¿³�ª«¨«ÔÁµÎ±tè ½Á¯²¨Ð½|±È¨­¶ÕÍí¶Á¼é±Èµ¢®�Ï¢¯È¶ê¶ ¼é¶Á¼é±Èµ¢®a�ꨫ͢ÔÁª«®Ã±È¶ÁÍƬx¶Áעͻ¸�åÅç�®°±�� ¬x®�½ ÍÎÔ Êø÷�Â�÷�Êïá a ßHÖ$� °¶ê¸¢®Áå ¤ ®tÑêÍ¢¶|·ã±Èµ»½|±(��� ¨Ð³ü½ ÍBÔ Êø÷²ÊÖáªÂ�÷²ùbÖ=� Âö�¸�®Ë¼�¶Á¯ü³²¶Á¾¿®tùªmä a ßÖÛ�×»³²¨«Í¢ÔÖ±²µ¢®q��¨­Í¢ÔÕª­®°±²¶ÕÍ ¬x¶Á×¢Í ¸»ÝNz½ Í ¸í·´®�Í¢®¹®¹¸í±²¶í³�µ¢¶|· ùÉÞ Â a ßÁå x ³È³�×»¾º® ¶ ±²µ»®°¯È·t¨«³²®bz»½ÁÍ»¸Æ³�×»Ï¢Ï ¶Î³�®�±²µ¢®¹¯²®�®?¦ê¨Ð³�±È³�½¿èÕ®¹Âæ±È¶Á¯ Z �d��� ·t¨Ç±Èµ·�±ÓÛ Z Ý�mÊÂ�å ¤ ¨­±²µ»¶Á×�±¿ª­¶Î³²³ ¶ ¼�ÔÕ®°Í¢®¹¯È½Áª­¨­±ðÀ ½Õ³²³²×¢¾¿®î±Èµ»½|± ±²µ¢®ÉØ»¯È³�±ÐåFm Â�°¶ê¶Á¯Ò¸�¨­Í ½|±²®Ó³�¶ ¼ Z ½ ¯È®ÌÍ¢¶ÕÍ^� ì°®°¯È¶½ Í ¸Æ±²µ¢®º¯È®°¾î½ ¨«Í¢¨«Í¢Ôí°¶Î¶Õ¯È¸¢¨­Í»½ ±²®Ó³�½ ¯È® ì¹®°¯È¶»å9{�µ¢®°Í~¼�¶Á¯©®°èÕ®°¯ÈÀﰶ긢®°·´¶Á¯Ò¸ m �1�7z�·Ë® µ»½ èÁ® H �M J - · M C M � å ü¯È¶�áð®ÓÂæ±�±Èµ¢®ÆÂö�¸�®°·´¶Á¯Ò¸¢³ ¶ ¼£�¤±È¶ ±Èµ¢®°¨«¯ºØ»¯È³�±F Âöê¶Á¯Ò¸�¨«Í»½|±È®¹³¹å ¤ ®ï°ª«½Á¨­¾ ±Èµ»½|±º±²µ»®íÏ¢¯È¶�áð®ÓÂæ±È¨­¶ÕÍ�¶ ¼£� ¨Ð³º½³²×¢¬»³²Ï»½Á°® ¶Á¼RÝ �, ¶ ¼ ¸¢¨­¾¿®°Í ³�¨«¶ÁÍ�Â�á ßÖ¶Á¯�ª­®Ó³²³�Û ³�¨«Í»Â°® H �M J - · M C M � ¼�¶Á¯�½ ª«ª�èÁ®ÓÂæ±È¶Á¯Ò³Å¨«Íɱȵ¢®�Ï¢¯È¶�áð®ÓÂæ±²¨«¶ÁÍxÝæå ú ͳ²×»Âҵコ°½Õ³�®©±Èµ¢®°¯È®Ö®H¦�¨«³�±�±ð·Ë¶ºèÁ®ÓÂæ±È¶Á¯Ò³ Z - ½ Í»¸ Z / ¨«ÍB�7z»·tµ¢¶Õ³²® Ï»¯²¶báð®¹Âæ±È¨­¶ÕÍɶÕÍɱȶ ±Èµ¢®ÖØ»¯Ò³ð±qÂíÂöê¶Á¯Ò¸�¨«Í»½|±È®¹³Ë¨«³±²µ»®º³È½ ¾¿®Á壬´×�± ±Èµ¢®°ÍΠïÛ Z - ÷ Z / Ý£mëÊÚá"ÂÚÂöÕÍα²¯Ò½Á¸�¨ÐÂæ±È¨­Í¢Ô̱²µ¢®ºµêÀÎÏx¶ ±Èµ¢®¹³²¨Ð³�±Èµ»½|±�� µ»½Á³ ¾¿¨­Í»¨­¾ ×¢¾ ¸�¨Ð³ð±Ò½ Í»Â°®ÊïáΠa ßÁå

U˶Á¾ ¬¢¨«Í¢¨­Í»Ô ±Èµ¢®ÆÏ¢¯È¶ÁÏx¶Õ³²¨Ç±È¨­¶ÕÍ ½Á¬ ¶|èÕ®í·t¨­±²µä­ ½Õ ¤ ¨«ª­ª«¨«½Á¾î³ ú ¸�®°ÍᲨ­±²¨«®¹³°z´¶ÁÍ¢®ÆÔÁ®°±È³ ±²µ»®Æ¼�¶Áª«ª­¶|·t¨«Í¢Ôþ³�×¢¯ÈÏ¢¯È¨«³²¨«Í¢Ô¯È®¹³²×¢ªÇ±#z ®?¦�Ï¢ª­¨ÐÂè­±�®H¦�Ï¢¯È®¹³È³²¨­¶ÕÍ»³Ë¼�¶Á¯�±²µ»®�·Ë®¹¨­ÔÕµÕ±�¸�¨Ð³�±²¯È¨­¬¢×¢±²¨«¶ÁÍí¼�¶Á¯�½ ª«ªL­ù�9�ïÂö�¸�®Ó³°å

��� {�h»y|{��ù=z�v��6Éë E � ' K90�2 Ô Êø÷�Â�÷�Ê¿áù a ß?Ö , /2Å>V�1dP]G\4b< X >JCR<H2�>�CD<�c(< ' V�C�>e4 ' KN>�I ' Ì?M^> ' G�2 ( Ê E ÷ �?�?� ÷ Ê ��* GtE� ' KqV ' $3<?2�Ì?TRÊ æ H � æ J H æ uL� ~ �M J E Û�á�ßÓÝ M H æM J Û�Û " æ uL� ~ � ~ M á ß Ý @¤ ®ï·´¶ÁÍL® ±îÏ¢¯È¶|èÁ®É±²µ¢®ï±²µ»®°¶Á¯È®°¾ µ»®°¯È®�z ¬¢×¢±Ìª­®°±È³¿³�®¹®Æ·tµÎÀ�¨­±É³²µ¢¶Á×¢ªÐ¸ãÍ»¶ ±î¬ ®ï±È¶Î¶þ³²×¢¯²Ï»¯²¨Ð³�¨«Í¢Ô ¨Ç¼©·Ë®ïÏ¢×�±±²¶ÕÔÁ®°±²µ¢®¹¯�·tµ»½ ± ·´®�ÑêÍ¢¶|·�å�U˶ÁÍ ³�¨Ð¸�®°¯�±²µ¢® � Ê aË� è|½Á¯²¨Ð½ ¬¢ª«®¹³�ÂöÁ¯È¯È®¹³²Ï ¶ÕÍ»¸�¨«Í¢Ô¿±²¶É±²µ¢® ·Ë®¹¨­ÔÕµÕ±©¸�¨«³�±²¯È¨«¬¢×�±²¨«¶ÁÍ~¶ ¼� ½ÁÍ»¸ ����å1{�µ¢®B­ ½Õ ¤ ¨«ª­ª«¨«½Á¾î³ ú ¸¢®°ÍᲨ­±²¨«®¹³ºÔÁ¨«èÁ®Ó³�×»³ºÊ a ßɪ«¨­Í¢®Ó½ ¯¿ÂöÕÍ»¸�¨­±²¨«¶ÁÍ»³º¯È®°ªÐ½|±²¨«Í¢Ô~±²µ¢®Ó³�®íè ½Á¯²¨Ð½ ¬»ª­®Ó³¶ÁÍ Âîֱ²µ»® ¸�¨«¾º®¹Í»³²¨­¶ÕÍÚ¶ ¼¦±²µ¢® Ï¢¯²¨«¾î½ ªz°¶�¸�®�¨Ð³�ØD¦�®¹¸�å ¡ ³�¨«Í¢Ô¿±²µ»®¹³²® ÂöÕÍ»¸�¨­±²¨«¶ÁÍ»³�¨­ÍƱȵ¢®�¶Á¬êèꨫ¶Á×»³�·�½ Àbz¢¶ÕÍ¢®�°½Áͳ²®°®�±Èµ»½|±©¶ÁÍ¢® °½ Í ÂöÁ¾¿Ï¢×¢±²®�±Èµ¢® ¸¢×»½ ª ·Ë®¹¨­Ôյαȳ�ÔÕ¨­èÕ®°ÍƱȵ¢® Ï»¯²¨«¾î½ ªé¸¢¨«³�±²¯È¨­¬»×�±²¨«¶ÁÍ�壬´ÀƸ¢×»½ ª«¨Ç±ðÀ}z ¶ÕÍ¢® ¹½ Í ½Áª«³²¶Âöվ¿Ï¢×�±²®©±Èµ¢® Ï»¯²¨«¾î½ ª�·Ë®¹¨­Ôյαȳ´ÔÁ¨«èÁ®¹Íî±²µ¢®�¸�× ½ ª�·´®°¨«ÔÁµÎ±´¸�¨Ð³�±²¯È¨­¬¢×¢±²¨«¶ÁÍ�å« Å¯²®Ó³�×¢¾î½Á¬¢ª­Àº±Èµ¢®°¯È®©½Á¯²® ¶ ±Èµ¢®°¯t³²×¢¬»³²®Ã±È³¶ ¼�Û�Ê a ß Ý�¶Á¼Ë±Èµ¢®Ì·´®°¨«ÔÁµÎ±È³©±Èµ»½|±�·´¶Á×»ª«¸ ª­®Ó½Á¸ ±²¶Æ±Èµ¢®î¯È®¹³�±�¬ ®¹¨­Í¢Ô ³²Ïx®¹Âè­Ø»®Ó¸ ½Õ³Ö·Ë®¹ª­ª´� ú Í ±²µ»®Ì°½Á³²®¿¶ ¼�­ù�9�Âö�¸�®Ó³�·´®ÉÑêÍ¢¶|· Ê E � E ßɽ Í»¸ Ê£- çÇç<ç Ê � ~ � � - ç<ç<ç � � � �©·tµ»¨«ÂÒµþ±È×¢¯²Í ³�±È¶~¬x®Ê a"� è|½Á¯²¨Ð½ ¬¢ª«®¹³°zê±²µ ½|±t¼�¶Á¯²±²×»Í»½|±È®°ª«Àí½ ¯È®Ö¶ ¼ ¼�×¢ª«ªz¯Ò½ Í¢Ñ�åe�궿±Èµ¢®�ª«¨­Í¢®Ó½ ¯�³²À�³ð±È®°¾ ¹½ ÍƬx® ³�¶Õª­èÕ®¹¸ï½ Í»¸ïÀꨫ®°ªÐ¸¢³�±²µ»®±²µ»®°¶Á¯È®°¾ ½ ¬x¶|èÁ®Å�ê�ëAì0írîiï ðzì7ñ ��®°±²®°¯È¾¿¨­Í»® ·tµ¢¨ÐÂÒµí³²×¢¬»³²®Ã±Ò³Å¶Á¼�±²µ»® � Ê a�� è|½ ¯È¨«½Á¬¢ª«®¹³ü¨«Í̱ȵ¢®�­ ½Á ¤ ¨­ª«ª«¨«½Á¾¿³ ú ¸�®¹ÍձȨDZȨ­®Ó³�½ ¯È®�ª«¨­Í¢®Ó½ ¯Èª­À¨«Í»¸�®°Ïx®°Í ¸�®°Íα¹å Û x Í ³�·´®°¯tÍ¢¶Á±�ÑêÍ¢¶|·tÍ̱ȶ�­ ½Á¸�µê×�å ÝÏ�¶Á±²¨ÐÂ�³�¨«¾¿Ï¢ª«® Âöկ²¶Õª­ªÐ½ ¯ÈÀ�±È¶�±²µ»®©½Á¬ ¶|èÕ®�±²µ¢®¹¶Á¯È®°¾ � {�µ»®°¯È®�½ ¯È®�®H¦¢½ÕÂæ±²ª«À Ê æ Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ªÐ³ü¨«ÍªÅ , Ô :RÖx¶Á¼z¸�®°ÔÕ¯²®¹®+ Âî±Èµ»½|±�µ»½ èÕ® ®?¦¢½ÁÂæ±Èª­ÀÉÊïá�åüì¹®°¯È¶Î®Ó³´¨­ÍÚ½ ÍêÀÌÔÕ¨­èÕ®°ÍƳ�×»¬»³�®°± û � Å , ¶ ¼ø°½Á¯È¸¢¨­Í»½Áª­¨­±ðÀîÊøå¢ Í�±Èµ¢®�¶ÁÍ¢®�µ»½ÁÍ»¸�±Èµ¢®´±²µ¢®¹¶Á¯È®°¾ ½Á¬ ¶|èծŨг|¯Õ×»¨Ç±È®´¨«¾¿Ï¢¯È®¹³È³�¨«èÁ®Ë¨­Í ±²µ»½ ±ø¨Ç±øÔÁ¨«èÁ®Ó³z®?¦¢½ÁÂ汦Íê×¢¾ ¬x®°¯Ò³¹å � ¶|·Ë®¹èÁ®°¯ ³�¨«Í»Â°®±²µ»®�ػͻ½Áª�®H¦�Ï¢¯È®¹³È³�¨«¶ÁÍ ³t½ ¯È®©Í»¶ ±�Â꫶ճ²®¹¸í¼�¶Õ¯²¾î³t¨­±�¨Ð³tµ»½ ¯Ò¸É±²¶ÌÔծñ�½î³²®°Í»³²®�¶ ¼ ±²µ¢® ÔÁ¯È¶|·�±²µï¶ ¼ ±²µ¢®�®?¦�Ï¢¯²®Ó³²³²¨«¶ÁÍ»³¹åx Âöν ¯Ò³�®Ö½ Ï»Ï¢¯²¶�¦�¨«¾î½|±²¨«¶ÁÍ̱²µ»½ ±�·Ë¶Õ¯²Ñ�³´¶Á×�±�¯È®¹½Õ³�¶ÕÍ»½ ¬»ª­À¿¨Ð³ Ê æ ¥ºÛ H � æ J " �Nu æ ~ � Ý˼�¶Õ¯l­ù�9�í°¶�¸�®¹³¹å�ªñ�- è úBõMï"ø°öBõ@��Ѷ��Ñ¥��øÐÑ¥��� � ø?ö�øùÝ×�Ðÿ�öB÷¤ ®ºÍ»¶|· ¸�®Ó³²Â°¯²¨«¬ ® ±²µ»®î¾º¶Î³ð±�Ïx¶|·Ë®¹¯�¼�×»ª¦½ÁϢϢª«¨«Â¹½|±È¨­¶ÕÍ~¶ ¼Ë±²µ¢®�­~½Á ¤ ¨«ª«ª­¨Ð½ ¾î³ ú ¸�®°ÍαȨDZȨ­®Ó³?zéÍ»½ ¾¿®°ª«Àڱȵ¢®îç�¨«Í¢®¹½Á¯ ü¯È¶ÁÔկȽÁ¾¿¾º¨«Í¢ÔïÛvçL ´Ýˬ ¶Õעͻ¸ï¶ÁÍï±²µ»®�¯È½ ±²®Ö¶ ¼¦½ºÂ°¶�¸�®Áåç�®°±7� ¬ ®É½1Ô Êø÷,�Õ÷Èù�Ö , Âö�¸�®Ì·t¨­±²µ�·´®°¨«ÔÁµÎ±�¸�¨Ð³ð±È¯²¨«¬¢×�±È¨­¶ÕÍ Ê E ÷ Ê£- ÷ �°�?� ÷ Ê � åB{�µ¢®îÍê×¢¾ ¬x®°¯�¶Á¼�Âö�¸�®°·´¶Á¯Ò¸¢³©¼�¶Õ¯±²µ»®Ö°¶�¸�®Ö¨«³ H æ Ê æ ½ÁÍ»¸íµ¢®°Í»Â°®©±²µ¢®Ö¯Ò½|±²®ÖÙ ª«¶ÁÔ , Û H Ê æ Ý ï Êøå x ³�¾º®¹ÍᲨ«¶ÁÍ¢®Ó¸É®Ó½ ¯Èª­¨«®°¯´¶Á×¢¯�ÔÕ¶Õ½ ª�¨Ð³´±²¶¿ÔÁ®°±�½ÁͽÁ³²À꾿Ï�±²¶Á±²¨ÐÂÖעϢÏx®°¯�¬x¶Á×¢Í ¸Æ¶ÁÍï±²µ¢® ¯È½ ±²®�Ùºåe{�µ¢¨Ð³t¯È®¹¸�× Âî¹³t±²¶Ì¸�®¹¯²¨«èꨭ͢Ô̽ÁÍÆעϢÏx®°¯�¬x¶Á×¢Í ¸Æ¶ÁÍ H Ê æ ³�×»¬^áð®¹Âñ±²¶º±Èµ¢®�¯²®Ó³ð±È¯²¨ÐÂæ±È¨­¶ÕÍ»³´±²µ ½|± Ê E ßÕ÷ Ê9- � ÷ Ê / � ÷ �?�°� ÷ Ê � ~i- �

Í3��� ¡

Page 84: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� E£ ßÁ÷[� - ÷]� / ÷ �°�?� ÷[� � Þ �x ³�Í¢¶ ±È®¹¸Æ®Ó½ ¯Èª­¨«®°¯\zD� æ ® ³�½ ¯È®Ö®¹³È³�®¹Íα²¨Ð½ ª«ª­Àíª­¨«Í¢®¹½Á¯t¼�עͻÂñ²¨«¶ÁÍ»³�¶ ¼ Ê æ ® ³°åÕ ü¯È®¹Â°¨«³²®°ª«ÀbzR� æ ç } H �M J E Ê M ~ ¨Ð³tÔÁ¨«èÁ®¹Íï¬êÀ½ºª­¨«Í¢®Ó½ ¯�¼�עͻÂñ²¨«¶ÁÍƶ ¼ ±²µ»® Ê æ ® ³¹å{�µ¢¨Ð³t¾¿¶ ±È¨­è|½|±È®¹³´±Èµ¢®Ö¼�¶Áª«ª­¶|·t¨«Í¢Ôºª­¨«Í¢®Ó½ ¯tÏ¢¯È¶ÁÔկȽÁ¾ �

­~½3¦�¨­¾¿¨«ì°® y � H �æKJ E Ê æ³²×¢¬^áð®¹Âñt±²¶! ÞËÑÊ E ßÊ£- ç<çÇç Ê � ~Ø- �Ê � ÷ �°�?� ÷ Ê � Þ �

·tµ¢®¹¯²® !ä²( Ê E ÷ �°�?� ÷ Ê � * z� ¨Ð³ ±²µ¢®Æ¾î½|±È¯²¨=¦ã¸�®¹³ÈÂïȨ­¬x®¹¸ ¨­ÍÛU˶Á¯È¶Áª«ª«½Á¯²ÀÎÍ¢å«ßÁß}zø½ Í»¸ã±²µ¢®ÆÍ¢¶Á±È½|±È¨­¶ÕÍ � Þ.Ñiz¨«¾ºÏ»ª­¨«®¹³t®¹èÁ®¹¯²ÀÌ°¶Î¶Õ¯È¸¢¨­Í»½ ±²®Ö¶ ¼½� ¨Ð³tÍ¢¶ÕÍ^� Í¢®°Ôν|±²¨«èÁ®Õå{�µ¢®�ª«¨«Í¢®¹½Á¯�Ï¢¯È¶ÁÔկȽÁ¾ ½ ¬x¶|èÁ®�¬x¶Á×¢Í ¸¢³�±Èµ¢®�Íê×¢¾ ¬ ®¹¯ ¶Á¼ø°¶�¸�®°·´¶Á¯Ò¸¢³�±Èµ»½|± ½ÁÍêÀíª«¨­Í»®¹½ ¯ Âö�¸�®�¶Á¼Å¸�¨«³�±È½ÁÍ»Âî ùÉ°½Á͵»½ èÕ®ü¶|èÁ®¹¯z½ " � ½ ¯ÈÀ ½Áª­Ï¢µ ½ ¬x®Ã±°z ½ÁÍ»¸�¶ÕÍ¢®Ë¹½ Í�µ¢¶ÕÏ ®Å±²µ»½ ± ª«¨­Í»®¹½ ¯éÏ¢¯È¶ÁÔÁ¯Ò½ ¾¿¾¿¨«Í¢Ô�½ Í»¸ ¸�×»½ ª«¨­±ðÀ©Â°¶Á×¢ªÐ¸�µ¢®¹ª­Ï ½ÁÍ»½ Àꪭ칮±²µ»®�¯Î×»½ ÍαȨDZðÀ7y � ½ ¬x¶|èÁ®ÁåY{�µ¢®q¯Î×»½ÁÍᲨ­±ðÀºÙ$WYX �[Z]\ ª­¶ÕÔ , Ûvy � Ý ï Êƨ«³Ë°½Áª­ª«®¹¸º±Èµ¢® ç· ¡Û�עϢÏx®°¯æÝø¬x¶Á׻ͻ¸î¶ÁÍ¿±Èµ¢®�¯Ò½|±È®¶ ¼�½Úª«¨«Í¢®¹½Á¯ Âö�¸�®Õå���¶Á¾¿®°·tµ»½ ± ³²×¢¯²Ï»¯²¨Ð³�¨«Í¢ÔÕª­À}zz®°èÕ®°Íþ±Èµ¢¶Á×¢ÔÕµþ±²µ¢®Éª­¨«Í¢®¹½Á¯ Ï¢¯È¶ÁÔկȽÁ¾ ·�½Á³�¾¿¶ ±È¨­è|½ ±²®¹¸þ¶ÕÍ¢ª«À~¼�¶Õ¯ª«¨­Í¢®Ó½ ¯�°¶ê¸¢®¹³°zê±²µ¢®�ç· ¬x¶Á׻ͻ¸ïµ¢¶ÁªÐ¸¢³t½ ªÐ³²¶ ¼�¶Õ¯tÍ¢¶ÁÍD� ª«¨­Í»®¹½ ¯t°¶ê¸¢®¹³°z¢½Á³�¨«¾ºÏ»ª­¨«®¹¸Æ¬êÀî±Èµ¢®Ö¼�¶Áª«ª­¶|·t¨«Í¢Ô ±²µ¢®¹¶Á¯È®°¾Æå

��� {�h»y|{��ù=z�v��#&ë E � ' KB0�2 ÛvÊø÷]Â�÷ÈùÎÝ , P]G\4b<�c ' >JC�Ê æ �^Z]\ -H #TH H 0 ò # � ÿ�m �ý� �| ïÛ m ÷ Z Ý å]�^� @ È <H> !ä( Ê E ÷ �?�°� ÷ Ê ��* 03254ª;=<?> Ì]<70�K ' 2`_|G�I[G3;J;$03INTbaW@ ìÅì @�A:CR<H2 ! ÞËÑ @{�µê×»³é±²µ¢®�¯Î×»½ÁÍձȨDZðÀ�Ù WYX ¨Ð³é±²µ¢®tçL ¬x¶Áעͻ¸ ¶ÁÍ ±²µ¢®�¯Ò½|±È®Ë¶Á¼ 03;J; Âö�¸�®Ó³°å½{�µ¢®�çL עϢÏx®°¯ø¬x¶Áעͻ¸ ·�½Á³ ¸�¨«³ÈÂö|èÕ®°¯È®¹¸¬êÀä��®¹ª«³È½ ¯²±²®"Ô � õ\ÖÖ·tµ»¶ ³�µ»¶|·Ë®Ó¸ µ¢¶|· ±²¶ ¸�®°¯È¨­èÕ®~³²®°èÁ®¹¯È½Áª�ÑêÍ¢¶|·t͡עϢÏx®°¯Æ¬x¶Á×¢Í ¸¢³É× ³�¨«Í¢Ôã±Èµ¢¨Ð³Ì¼�¯Ò½ ¾¿®°·´¶Á¯ÈÑ�å ¦®°¯²¼�¶Á¯È¾¿¨­Í»Ôï½ï±È¨­ÔÕµÕ± ½Õ³�À꾿Ï�±È¶ ±²¨ÐÂî½ Í ½ ª«Àê³²¨Ð³Ö¶ ¼´±²µ¢®Éç· à¬ ¶Õעͻ¸ ¨Ð³�Í¢¶ÁÍD� ±È¯²¨«èꨫ½ÁªÅ½ Í»¸ ±È¶Î¶ÕÑ~½Æ·tµ¢¨«ª­®í½|¼Ü±²®¹¯�±²µ»®·´¶Á¯ÈÑ~¶ ¼q� ®°ªÐ³È½ ¯²±²®Áå�{�µ¢®Ì¬x®¹³�±º½Á³²À꾿Ï�±²¶Á±²¨ÐÂɽ Í ½ ª«Àê³²¨Ð³�¶ ¼t±Èµ¢®íç· ¬ ¶Õעͻ¸�¨Ð³º¸�×¢®Ì±È¶d­ Â í ª«¨­®ÓÂîbz¥�t¶�¸�®¹¾¿¨«ÂÒµiz�t×¢¾î³²®°À ½ÁÍ»¸ ¤ ®°ªÐÂÒµ Ô � � Öü·tµ¢¶íÔÕ¨­èÕ®�±ð·´¶í×»Ï¢Ï ®¹¯�¬ ¶Õעͻ¸¢³©¶ÕÍ ±²µ»®¿ç· ¬x¶Á׻ͻ¸�å ¤ ®¿³ð±Ò½|±²®º±Èµ¢®°¨«¯Ö¬ ¶Õעͻ¸¢³©¼�¶Õ¯±²µ»®�¬¢¨­Í ½ ¯ÈÀÉ°½Õ³�® �

��� {�h»y|{��ù=z�v�¢}½Æ ä�äc� m(h wR�R¹NÎ� Ñ Ï|É�ë E Ä ' K�0lEH03� ' ;UTBG�E�Ì ' 2:03INT�P]G\4b<HK A 2:G3>e2:<�P�<NK�K?03I ' ;*T�; ' 2:<�0�I C GtEI[0�>�< Ù 0�2:4�I[<H;$03> ' $�<F4 ' KN>�0325P]< ä >�CD<?2

Ù m âãÛ ß� á å ä�Ûðßtáþä Ý�Ýæ÷032:4 Ù m ¾¿¨«Íd ò�ó E 3 -�~ / r ô ÿ ß a F�ÛSe / Ý á¨F�ÛSe / a"� äfe a"� ä Ý�� c·CR<HI[< F�Û�:xÝ â / a ßtá � ßtá¨:� c �

ü¯È¶|èꨭͻÔ�±²µ»®¹³²®t¬ ¶Õעͻ¸¢³ø¨Ð³¦·�½ À�¶Á×�±ü¶Á¼x³ÈÂöÁÏx®�¶ ¼x±²µ¢¨Ð³øª«®¹Âñ²×¢¯È®ÕÛv¯ÒÝ��½{�µ¢®�¨«Íα²®°¯È®¹³�±²®Ó¸ ¯È®¹½Õ¸�®°¯ø¨Ð³¦Ïx¶Á¨«ÍձȮ¹¸ ±²¶©±Èµ¢®¹³²¨«³¶ ¼«��½Á¾º¶Õ¯²¶�¸�Í»¨Ç±Ò³�ÑêÀ Ô Íb�3ÖSz�¶Õ¯�±²µ¢®�½Á¯�±È¨«Â°ª­®Ö¬êÀÉçz®°èÁ®¹Í»³²µÕ±È®°¨«Í�Ô » õ\Ö�¼�¶Á¯�¼�×¢¯²±²µ»®°¯�¸�®°±È½Á¨­ªÐ³°å

�ªñ�­ �Éõ@Ñ¥ÔYó�õQ�\ÒYø4�7õ@ÔI�Ðö ò Ôb¦v� óvÒR��ÒYø���Ô¤ ®©®Ó½ ¯Èª­¨«®°¯´³²½ · ±Èµ¢®�§©¨­ª«¬x®°¯²±t��kü½ ¯Ò³�µ»½ÁÍ¢¶|躬 ¶Õעͻ¸Øz�Í»½Á¾¿®°ª«ÀÌÙºÛ ä|÷ " ÝËÞ ßÅá â , Û ä ÝŽÁÍ»¸É³È½ ·¡±Èµ»½|±tÂö�¸�®Ó³Ë¬ ½Á³²®¹¸¶ÁÍ ½Áª­ÔÕ®°¬¢¯Ò½ ¨ÐÂÖÔÁ®¹¶Á¾¿®Ã±È¯²Àí¶Á×�±[� Ïx®°¯²¼�¶Á¯È¾¿®¹¸í±²µ»¨«³ ¬ ¶Õעͻ¸�å � ¶|·´®°èÁ®¹¯�¼�¶Á¯�±²µ¢® ¬¢¨­Í ½ ¯ÈÀí½ ª«Ï¢µ»½Á¬ ®°±�±Èµ¢¨«³ ¨Ð³t±²µ»® ¬x®¹³�±ÑêÍ¢¶|·tÍ節¶|·´®°¯�¬x¶Áעͻ¸ï¶ÕÍɱȵ¢®�¯È½ ±²®Ö¶ ¼ø½¿Âö�¸�®Õå«Ï�½|±È×¢¯Ò½ ªØ¯Î×¢®¹³�±²¨«¶ÁÍ»³´±È¶Ì½Á³²Ñɽ|±�±Èµ¢¨«³�³ð±Ò½ ÔÁ®�½Á¯²® �

Í3�����

Page 85: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ßÕå ú ³´±²µ¢® §£k ¬x¶Á×¢Í ¸É±È¨­Ôյα Û�¶Á¯�½Á¯²® ±²µ»®°¯È®�Âö�¸�®¹³´±Èµ»½|±�¸¢¶º¬x®Ã±²±²®¹¯t±²µ»½ÁÍï±²µ¢® §£k ¬x¶Á×¢Í ¸»Ý��� å ú ³´±²µ¢®�ç· ¬x¶Á׻ͻ¸í±²¨«ÔÁµÎ± Û�¶Õ¯�¸�¶º±²µ¢®¹¯²®Ö®H¦�¨Ð³ð±�°¶�¸�®¹³´±Èµ»½|±�¾¿®°®°±t±²µ¢®�ç· ¬ ¶Õעͻ¸»Ý5�¡ å ú ³´±²µ¢®�­��Q� ¤ ¬ ¶Õעͻ¸í±²¨«ÔÁµÎ± Û�¶Õ¯�¸�¶º±²µ¢®¹¯²®Ö®?¦ê¨Ð³�±�Âö�¸�®¹³´±Èµ»½|±�¾¿®¹®Ã±t±²µ»®�­��@� ¤ ¬x¶Áעͻ¸ Ý��

¬´¶ ±ÈµÉ±Èµ¢® §£kଠ¶Õעͻ¸Æ½ Í»¸�­��@� ¤ ¬x¶Á×¢Í ¸ï½Á¯²®©ÑêÍ¢¶|·tÍí¼�עͻÂæ±È¨­¶ÕÍ»³t½ Í ¸É·´®ÖÑÎÍ»¶|·¡±²µ»½ ±t±²µ¢®¹Àɽ ¯È®©Í¢¶ ±�®\¯Õ× ½ ª å�ê¶ ¨Ç±¦¨«³éÍ¢¶Á±éÏx¶Õ³È³�¨«¬¢ª«®ü±²¶ ¬ ®¹ª­¨«®°èÕ®ü±Èµ»½|±¦¬ ¶Á±²µ�¬x¶Á׻ͻ¸¢³¦½ ¯È®ø±²¨«ÔÁµÎ±Óå � ¶|·Ë®¹èÁ®°¯�±²¨«ª­ªê¯È®¹Âî¹ÍᲪ«À Í¢¶ÕÍ¢®Å¶Á¼�±²µ¢®´¯È®°¾î½ ¨«Í¢¨«Í¢ÔÏx¶Õ³È³�¨«¬¢¨«ª­¨­±²¨«®¹³´®°èÕ®°ÍÉ°¶ÁÍ»³²¨Ð¸�®°¯È®¹¸îÏ ½ ¨«¯²·t¨«ì°®©ÂöÁ×»ª«¸î¬x®©¯²×¢ª«®¹¸É¶Á×�±Óå ú å ®Õå=zꨭ±�·�½Á³ËÂöÕÍ»Â­è|½ ¬»ª­®�±²µ»½ ±Ë±Èµ¢®©ç· ¬x¶Á׻ͻ¸½ Í ¸Ì§£k ¬x¶Áעͻ¸¿·´®°¯È®t¬x¶ ±²µÌ±²¨«ÔÁµÎ±°zζÁ¯ø±Èµ»½|±Ë±²µ¢® çL �¬x¶Á×¢Í ¸î½ Í»¸ª­��Q� ¤ ¬x¶Áעͻ¸Ì·Ë®¹¯²®t¬x¶ ±Èµ¿±²¨«ÔÁµÎ±¹å¥�t®ÓÂî°ÍαȪ­À��½Á¾º¶Õ¯²¶�¸�Í»¨Ç±Ò³�ÑêÀBÔ Íb�3Öx¾î½ÁÍ»½ ÔÕ®¹¸¿±È¶ ¯È×¢ª­® ¶Á×�±´¶ÁÍ¢® ¶ ¼�±Èµ¢®¹³²®�Ïx¶Õ³È³�¨«¬¢¨«ª­¨­±²¨«®¹³�z µ¢® ³²µ¢¶|·´®¹¸º±Èµ»½|±´¼�¶Á¯´®°èÕ®°¯ÈÀºä�zα²µ»®çL ¬ ¶Õעͻ¸~¨«³©½|±©ª­®Ó½Á³�±�±²µ»®º½Á¯²¨­±²µ¢¾¿®°±²¨ÐÂ�¾¿®¹½ÁÍ ¶ ¼ø±Èµ¢®¿§£k ¬x¶Áעͻ¸ ½ Í»¸Ú±²µ¢®F­��@� ¤ ¬ ¶Õעͻ¸�å��ê¶í¨Ç¼ü±Èµ¢®î§£k¬x¶Áעͻ¸ï¨Ð³´±²¨«ÔÁµÎ±°z¢±²µ¢®¹Íí±Èµ¢®�çL ¬x¶Á×¢Í ¸ï¹½ ÍÆÍ¢¶Á±�Ï»¯²¶|èÕ®�±Èµ¢¨«³t¼v½ÁÂæ±��¸ O·� � { Ä �ámeh wR��¹ �¹svu � �dj�h yKm¦sG�½!�y � Z h?¹ {ôOfg ¢ ¬êèꨭ¶Õ×»³�ª«Àڱȵ¢¨«³Ð¯Î×¢®¹³�±²¨«¶ÁÍ�°½ÁÍ�Í¢¶ ± ¬ ®É½ÁÍ»³²·Ë®¹¯²®Ó¸ ½ ±±²µ»®ï¾¿¶Õ¾º®¹Íα¹å#óü®°±¿¶ÕÍ¢®ÆÂöÁ×»ª«¸ ½Á³²Ñþ·tµ»½|±¿±²µ»®ï®¹èꨫ¸�®¹Í»ÂîƳ²¶~¼v½Á¯¿³²×¢ÔÕÔÁ®¹³�±È³¹å ¢ Íã±Èµ¢®Æ¶ÁÍ¢®ïµ»½ÁÍ»¸ãÍ¢¶þ¬x®Ã±²±²®°¯Âö�¸�®�µ ½Á³�¬x®°®°Íï¼�¶Õעͻ¸Øz»½ÁÍ»¸ï·Ë®�°¶Á×¢ªÐ¸í±È½ ÑÕ®©±²µ¢¨Ð³�½Á³�®¹èꨫ¸�®¹Í»Âîֱȵ»½|±t±Èµ¢® §£k ¬x¶Áעͻ¸Æ¨Ð³´±²¨«ÔÁµÎ±Óån¢ Íɱȵ¢®�¶Á±²µ¢®¹¯µ»½ÁÍ»¸ ·Ë®É°¶Á×¢ªÐ¸þ½Á³²Ñ~¨­¼�±²µ¢®¹¯²®Ì½Á¯²®î®?¦�½Á¾¿Ï¢ª­®Ó³©±²µ»½ ± ³²×¢ÔÁÔÕ®¹³�±°zz·t¨­±²µ»¶Á×�± Ï»¯²¶|èꨫ͢ÔRzz±²µ»½ ±�±²µ¢®É§£k ¬ ¶Õעͻ¸�¸�¶ê®¹³Í¢¶Á±�½ÁÏ¢Ï ®Ó½ ¯Ë±²¶º¬ ® ±²¨«ÔÁµÎ±Óå ¤ ®Öµ»½ èÁ® ½ ª«¯²®Ó½Á¸�Àî³²®°®°ÍɶÁÍ¢®Ö³�× Âҵ̮H¦¢½ ¾¿Ï¢ª«®�z Í ½ ¾¿®°ª«À¿±²µ¢®��t®¹®¹¸����ê¶Áª«¶Á¾¿¶ÕÍÉÂö�¸�®Ó³·´®°¯È® ¸�¶Õ¨­Í¢ÔÇ)�¬x®Ã±²±²®¹¯ ±Èµ»½ Í ¯È½ÁÍ»¸�¶Õ¾*+ɬ¢×�±Ö·Ë®¹¯²® ×»³²¨­Í¢Ôƽ ª«Ï¢µ»½Á¬ ®°±Ö³²¨«ì°®¹³ ±Èµ»½|±Ö·Ë®¹¯²® ÔÁ¯È¶|·t¨­Í»ÔÌ·t¨Ç±Èµ~±Èµ¢®¿¬¢ª«¶êÂÒѪ«®°Í¢ÔÁ±²µ�ål{é×¢¯ÈÍ¢¨­Í»Ô¿±²µ¢¨Ð³�¨«Íα²×¢¨­±²¨«¶ÁÍÚ¨«Íα²¶É½Ì¯²®°¼�×�±È½ ±²¨«¶ÁÍÚ¶ ¼¦±Èµ¢® " � ½ ¯ÈÀ泥kl� ¬x¶Áעͻ¸ ¯²®\¯Õ×»¨­¯È®¹¸Æ½ ª«ª�±Èµ¢®�µ¢®Ó½ èêÀ}� ¸�×�±ðÀ¾î½ÁÂÒµ¢¨«Í¢®¹¯²À�¶Á¼ x §�� Âö�¸�®Ó³?z ¬»×�±Å¨­±Å¸�¨«¸ºÏ»½ À ¶0Ù¦å½{�·´¶�³�¨«ÔÁÍ¢¨­Ø ¹½ Íαøª­®Ó³²³²¶ÁÍ»³¦Â°¶Á×¢ªÐ¸º¬ ®tª«®¹½Á¯²Í¢®Ó¸�¼�¯È¶Á¾ ±²µ¢¨Ð³ü³²×»Â°Â°®¹³È³z Ûðß Ý©·Ë®¿Í¢®¹®¹¸ ³�¶Õ¾¿®º®?¦¢½ ¾¿Ï¢ª«®º¶Á¼´½ÁÍ ½ÁÍ»½ ¾¿¶Áª«¶Á× ³�¬x®°µ»½ èꨫ¶Á¯�½Á³Ö®?¦�µ¢¨­¬»¨Ç±È®¹¸ ¬ÎÀ ±²µ¢®b�q� °¶ê¸¢®bzz½ÁÍ»¸ Û � Ý ·´®Í¢®¹®¹¸î½ Í̽ճ�À꾿Ï�±È¶ ±²¨ÐÂ�¸�¨«¯È®¹Âæ±È¨­¶Õͺ±²¶�®?¦êÏ»ª­¶Õ¨Ç±Å¨«Í̶Õ×¢¯ü¨«ÍÎèÕ®¹³�±²¨«ÔÕ½ ±²¨«¶ÁÍ�å x ¯È®t±²µ¢®¹¯²®�¶ ±²µ»®°¯ü®?¦�½Á¾¿Ï¢ª­®Ó³ü¶Á¼�½ÁÍ»½ ¾¿¶Õª­¶Õ×»³¬x®°µ»½ èꨫ¶Á×¢¯_�B{z×»¯²Í»³�¶Õ×�±�®°èÕ®°¯ÈÀî®H¦¢½ ¾¿Ï¢ª«®Ö·Ë®Öµ»½ èÕ®�³�®¹®°ÍƳ�µ¢¶|·�³t³²¶Á¾¿®�½ Í ½ ¾¿¶Áª«ÀÁåT !�¹½!D� !�yA¹ Z h?¹é{ôO ú ¼�±Èµ¢®Æ¬ ®Ó³ð±î·´®Æ°¶Á×¢ªÐ¸ ¸¢¶ ·t¨­±²µ Âö�¸�®Æ¨Ð³ ±È¶ ½Õ³²³²×¢¾¿®í±²µ»½ ±º±Èµ¢®Ú³�Ï»µ¢®°¯È®¹³º¶ ¼ ¯È½Õ¸�¨­× ³ºù

½ ¯È¶Áעͻ¸ï±Èµ¢®°¾ ¸�¶íÍ¢¶ ±©¶|èÁ®¹¯²ªÐ½ Ïiz¢±²µ¢®¹Í ½î¬¢¨«Í»½Á¯²ÀÆÂö�¸�® ·t¨Ç±Èµ~¯È®°ªÐ½|±²¨«èÁ®�¸¢¨«³�±È½ÁÍ»Âî Ê ï � ³²µ¢¶Á×»ª«¸Úµ ½ èÁ®�¶ÁÍ»ª­À±ð·Ë¶¿Âö�¸�®¹·Ë¶Õ¯È¸¢³¹å|{�µ¢® � ½Õ¸¢½ ¾î½ ¯Ò¸ïÂö�¸�®¹³�·t¨­±²µ£üÖÛvÊzÝ�Âö�¸�®°·´¶Á¯Ò¸¢³�½ ¯È®�¸�¶Á¨«Í¢Ôî³²¨­ÔÕÍ¢¨ÇØx°½ ÍαȪ­Àî¬x®Ã±²±²®°¯Óå

T !D� � sG� u Z h?¹ {ôO� M� è T Z h?¹ {ôO ú ¼ ·Ë® ØD¦í½¿¸�¨Ð³�±È½ Í ÂîÖùî½ Í»¸ïÂöÕÍ»³�¨Ð¸�®¹¯´ÊÉá�¿¼�¶Õ¯�Ô Êø÷�Â�÷²ùbÖ$� °¶ê¸¢®¹³Ë±²µ¢®¹Í±²µ¢®Ö§£k ¬x¶Áעͻ¸É¯²®\¯Î×¢¨­¯È®¹³üÊ á�ÂíÞ ùüª«¶ÁÔÅÊ|zηtµ»¨­ª«®�±Èµ¢®�¬@U � ½ÁÍ»¸ � ½ ¾¿¾¿¨­Í¢ÔºÂö�¸�®Ó³ü¶ÁÍ»ª­À¿Í¢®¹®¹¸îʺáBÂF§Ûvù ï � Ý�ª­¶ÕÔøÊøå«{�µÎ× ³�¶Áͻ°®Ö½ÁÔÕ½Á¨­Íizê±Èµ¢®¹³²®�Âö�¸�®Ó³�¶Á×�±ÈÏ ®¹¯�¼�¶Õ¯²¾�±²µ¢® §£k Ï¢¯È¨«Í»Âè«Ï¢ª«®Áå

�ê¶É±²µ¢®ºÍ¢®H¦ê±9¯Õ×»®¹³�±²¨«¶ÁÍ ¶Õ×¢ÔÁµÎ±�±È¶É¬x® � ú ³�±²µ»®°¯È® ½ Í ½Á³²Àξ¿Ï�±È¶ ±È¨«Â ³�®¹Í»³�® ¨­Í ·tµ¢¨ÐÂÒµ ¶ÁÍ¢®º³�µ»¶Á×¢ªÐ¸Æ±²¯ÈÀï±²¶í®H¦�Ï¢ª«¶Á¨­±±²µ»®¹³²®�®H¦¢½ ¾¿Ï¢ª«®¹³¹å ¤ ®�¸�®Ó³²Â°¯²¨«¬x® ±ð·´¶î½ Ï¢Ï»¯²¶Î½ÁÂÒµ¢®Ó³Å¬x®°ª«¶|·�å

äÉ{ é !T�¹s$� {ß�ïsGOÇ�°!�� Z { Z é h�OÓ{'�°h -/ {�µ¢®�­��@� ¤ ¬x¶Á×¢Í ¸Øz�±È¶ÁÔÁ®°±²µ¢®¹¯�·t¨Ç±Èµ ±²µ¢®É§£k ¬x¶Á×¢Í ¸Øzz¨«¾¿Ï¢ª­¨«®¹³�±²µ»½ ±±²µ»®�¬¢¨­Í ½ ¯ÈÀíÂö�¸�®Ö¶Á¼ ¯È®°ªÐ½|±È¨­èÕ®Ö¸¢¨«³�±È½ÁÍ»Âî -/ á 6 ·t¨­±²µÚµ»¨­ÔÕµ¢®¹³�±�Ï ¶Î³²³²¨«¬¢ª­®Ö¯Ò½|±È®©µ ½Á³t¯Ò½|±È®�¥ºÛ 6 / Ýæån�ê¶î¨­Íڽ°¯²±È½ ¨«Í½Á³²À꾿Ï�±²¶Á±²¨ÐÂ�³²®°Í»³²®bzÕ±²µ¢®9­��@� ¤ ¬x¶Áעͻ¸í½ Í»¸î±²µ¢®�§£kë¬x¶Á׻ͻ¸É½Á¯²®�½Áª­¯È®¹½Õ¸�À ±²¨«ÔÁµÎ±´½ ±Ë±Èµ¢¨«³Ë®H¦ê±È¯²®¹¾º®Õå � ¶|·´®°èÁ®¹¯±²µ»® §£k ¬x¶Á׻ͻ¸ï¨«³�Í¢¶ÕÍ^� ÂöÁÍ ³ð±È¯²×»Âñ²¨«èÁ®Ö½ Í»¸ïÂöÕÍ»³�±²¯È×»Âæ±È¨­èÕ® ¯È®¹³²×¢ª­±È³t½ ¯È®Ö³ð±È¨­ª«ª�ª«½ÁÔÁÔÕ¨­Í¢Ôº¬x®°µ¢¨«Í»¸í±²µ¢® §£k"'3­��Q� ¤¬x¶Áעͻ¸ ¨­Íã±²µ¢¨Ð³¿Â°½Á³²®Áå�{�µ¢®É¬x®¹³�±¿ÑÎÍ»¶|·tÍ ÂöÕÍ»³ð±È¯²× Âæ±²¨«èÁ®É¯²®Ó³�×¢ª­±È³ Àꨭ®¹ª«¸ Âö�¸�®¹³ ¶ ¼�¯Ò½|±È®àè¿Û 6 © Ý ·t¨Ç±Èµ ¸�¨Ð³ð±Ò½ Í»Â°®-/ á 6 å(�ê¶Á¾¿®�ÂöÕÍ»³�±²¯È×»Âæ±È¨­¶ÕÍ»³Ë±²µ»½ ±�½ÁÂÒµ¢¨«®°èÕ®�±Èµ¢¨«³�¬ ¶Õעͻ¸Æ½ ¯È® �

ñ �t®°®Ó¸�����¶Áª«¶Á¾¿¶ÁÍïÂö�¸�®�ÂöÕͻ°½ ±²®°Í ½|±²®Ó¸É·t¨­±²µÆ¯Ò½ Í»¸¢¶Á¾ ª«¨­Í¢®Ó½ ¯�°¶ê¸¢®Áå�Ûv{�µ»®�¯²®Ó½Á¸�®¹¯�³²µ¢¶Õ×¢ª«¸í·´¶Á¯ÈÑ¿±²µ¢¨Ð³t¶Á×¢±½Á³�½ ÍÆ®H¦�®¹¯È°¨«³²®Áå Ý

ñ x ª«ÔÁ®°¬»¯È½Á¨«Â�§©®¹¶Á¾¿®Ã±È¯²ÀÆÂö�¸�® °¶Áͻ¹½|±È®°Í»½ ±²®¹¸Æ·t¨­±²µ � ½Á¸»½ ¾î½ ¯Ò¸ÆÂö�¸�®Áå£�ê×»ÂÒµ~½Ì°¶ÁÍ»³�±²¯È×»Âñ²¨«¶ÁÍÆ·´½Õ³�ÔÕ¨­èÕ®°Í¬ÎÀ3¢�½|±Ò³�¾î½ ÍLzb{t³ð¼v½Õ³�¾î½ÁÍ¿½ÁÍ»¸7k�ªÐ½Á¸�×¢±È³äÔ »b� Ö�½ Í»¸¿ÂöÕ×¢ªÐ¸ ¬x®�½ ±�±²®¹¾¿Ï�±²®Ó¸¿¬ÎÀ ±²µ¢®�¯²®Ó½Á¸�®¹¯ü½Á³ü½Áͺ®?¦�®°¯ÒÂèг�®ÕåÍ3���}�

Page 86: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ñ U˶긢®¹³t¸�®¹¯²¨«èÁ®Ó¸Ì¼�¯È¶Á¾�®?¦�Ï»½ Í»¸¢®°¯tÔÁ¯Ò½ Ï»µ»³�¸�×¢®Ö±²¶ x ª­¶ÕÍizR¬´¯²× ÂÒÑ:z^Ï ½ ¶Á¯\zDÏ�½Á¶Á¯\z�½ Í»¸��t¶Á±²µ1Ô ��Ö å

ú ¾¿Ï¢¯È¶|èΨ«Í¢Ôڱȵ¢®¹³²®ÆÂöÁÍ ³ð±È¯²×»Âñ²¨«¶ÁÍ»³ ·Ë¶Õ×¢ªÐ¸ã¬x®ï½ ³�¨«ÔÁÍ¢¨­Ø ¹½ Íαº³�±²®¹Ï�±²¶|·�½ ¯Ò¸¢³ ½ÕÂÒµ¢¨«®°èê¨­Í»Ô ±²µ»®Æ§£k¤¬ ¶Õעͻ¸ ÂöÁÍD�³�±²¯È×»Âæ±È¨­èÕ®°ª«ÀÁå

ä,!��¹{ Z é hPO¹{��\h ß x ±�¯È½ ±²®�Â꫶ճ²®©±²¶Æßbz¢¶Õ¯�½Á³tä�Ù � zê±²µ¢® §£k ¬x¶Á׻ͻ¸Æ³²½ À�³Ë±²µ»½ ±�Ù Þ ßtá ä ª«¶ÁÔxÛðß ï ä Ýæå x ª­ª¬x¶Áעͻ¸»³�×¢Ï�±²¶º±Èµ¢® í ª«¨«½Õ³Å¬x¶Á×¢Í ¸É¶ÕÍ¢ª­À̳²µ¢¶|· Ù Þëß´á Û ä ï � Ý�ª­¶ÕÔ»Û � ï ä Ýæå ú Íɱ²µ¢¨Ð³�¯È®°ÔÁ¨«¾¿®�±Èµ¢®ÖÔÕ½ÁÏɬx®Ã±ð·´®°®°Íí±²µ»®§£k ¬ ¶Õעͻ¸É½ÁÍ»¸î±Èµ¢®©×¢Ï¢Ïx®°¯´¬ ¶Õעͻ¸¢³�³²®°®°¾î³Ë¾î½3¦�¨­¾î½Áª å|{�µ¢¨Ð³´¯²®¹ÔÁ¨«¾º® ¾î½ À ¶¼Ùx®¹¯´¶ÕÍ¢®�¶Á¼�±²µ¢®©¬x®¹³�±�¶ÕÏ�±²¨«¶ÁÍ ³ü¼�¶Õ¯)�¬x®¹½ ±²¨«Í¢Ôº±²µ¢® §£k ¬x¶Á׻ͻ¸�+¿¨­¼é±Èµ¢¨«³�¨«³�Ïx¶Õ³È³�¨«¬¢ª«®�½|±�½ ª«ª å

Í3��� »

Page 87: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

« ¬®­°¯²±�³S´ hCi

Ç��� �=5ê·¶ é u:h y sG� � �ãs Zv¸ �¤�°y3h?¹ w Z �¹s�h��º�\h è hg¹ésD�éu ��� {�h»y � ¢©Âñ²¶Á¬x®°¯ �}� z ���}� ß½�¾�¿�ÀPÁ�Â�¾�jlk

È <�P?>�M^I]<HI<Ä�Åù0}4°C^MÆ1îMR4}032 1ØPHI ' Ì�<iÄO��I[03��ça0�INI[G3c{é¶ê¸»½ À ·´®~¾¿¶|èÕ® ¶ÁÍ ±²¶ã±Èµ¢®þ³�®ÓÂöÁÍ ¸¡Ï¢µ»½Õ³�® ¶ ¼�¶Á×»¯ï°¶Á×¢¯Ò³�® � x ª«ÔÁ¶Õ¯²¨­±²µ¢¾î³í¨­ÍSU˶�¸�¨­Í»Ôã±²µ»®°¶Á¯ÈÀÁå ¤ ® ·t¨«ª­ª¨«Íձȯ²¶�¸�× ÂÃ®í³²¶Á¾¿®Ì¶Á¼t±²µ¢®ï½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾¿¨Ð¿±È½Õ³�Ñ�³º½Á³È³�¶�°¨«½ ±²®¹¸ ·t¨­±²µ Âö�¸�¨«Í¢ÔÚ±²µ»®°¶Á¯ÈÀÁå ¤ ®}® ª«ªË±²µ¢®¹Í ¾¿¶|èÁ®Ì¶ÕÍ�±²¶ ½³²Ï ®ÓÂè­Ø Â�½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾ ¼�¶Õ¯�¸�®¹Â°¶�¸�¨­Í»Ô§��®°®¹¸^���ê¶Õª­¶Õ¾¿¶ÁÍÆÂö�¸�®¹³¹å

Í%m�ñ<Í ò �<øÐ�ÐÑ«ø4Ò�úÆ� ø��Mè ��ÔÒébÔ�ont�²�ø��� p¡�eÿü�Å�»� �D´qµ �²�ã�^³ø�7þ��"ßÒ�¢�(µ q�´l³|¸q¸��(¸��v� �D´����Å��£�êµ»½Á͢͢¶ÕÍi® ³�±²µ¢®¹¶Á¯È®°¾ ½ ª«¯²®Ó½Á¸�Àí¨­Íαȯ²¶�¸�׻°®¹¸Ú³²Ï ®ÓÂè­Ø»®¹¸Ú±ð·Ë¶Ì¬ ½Á³²¨«Â�½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾¿¨«Â©±Ò½Á³²Ñ�³?zxÍ»½ ¾¿®¹ª­À æn2:P�G\4 ' 2�V ½ÁÍ»¸V7<]P�G\4 ' 2�V å«{�µ¢® ػͻ½Áª ¶Õ¬^áð®¹Âñ²¨«èÁ® ¨«³´¶ÁÍ»ª­Àî¸�®°Ø»Í¢®¹¸í½Á³´½ °¶Á¾ ¬¢¨­Í ½|±²¨«¶ÁÍɶ ¼�±²µ»®�±ð·´¶RzêÔÁ¨«èÁ®¹Íɽ ÂÒµ ½ Í¢Í¢®¹ª»±Èµ»½|±´ØD¦�®¹³±²µ»®©®¹¯²¯È¶Á¯Ë¾¿¶ê¸¢®°ª å(�êÏ ®ÓÂè­Ø °½Áª­ª«À¿±²µ»®���µ»½ Í¢Í»¶ÁÍí½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾¿¨«Â ÂÒµ»½ ª«ª«®°Í¢ÔÕ®bzί²®Ó³ð±È¯²¨ÐÂæ±È®¹¸î±È¶ ±Èµ¢®Ö¬¢¨«Í»½ ¯ÈÀî³�À꾿¾¿®Ã±²¯È¨ÐÂÂÒµ»½Á͢͢®°ª�¨Ð³�±Èµ¢®Ö¼�¶Áª«ª­¶|·t¨«Í¢Ô �

��� {ÙS � !����½hP� gÖy�h(m é {��Ûæ ç�®Ã±BË � 3 � ¬ ® ±²µ¢®þ¸�¨Ð³ð±È¯²¨«¬¢×�±È¨­¶ÕÍ ¶ÕÍ�Ê ¨­Í ¸�®°Ïx®°Í»¸¢®°ÍᲪ«À�ÂÒµ¢¶Õ³²®°Í¯È½ÁÍ»¸�¶Á¾ ¬¢¨­±È³�·tµ»®°¯È®�®¹½ÁÂҵƬ¢¨­± ¨Ð³�ß�·t¨­±²µ~Ï¢¯²¶Õ¬»½ ¬»¨­ª«¨Ç±ðÀ�i ½ Í»¸ � ·t¨Ç±ÈµÚÏ¢¯²¶Õ¬»½ ¬»¨­ª«¨Ç±ðÀ ß�á�izå�§©¨«èÁ®°ÍÙ + ߺá âãÛ�ixÝNz�ػͻ¸�½ÁÍ <vOQP ' <?2R>S;UTQP]G��lZ5M^>�0}ÌH;$< ¼v½Á¾º¨«ª«À ¶Á¼Ö¼�עͻÂæ±È¨­¶ÕÍ»³ ÿ : � � � ½ÁÍ»¸ ÿ Ë � � �·tµ¢®°¯È® : � � ÿ � ÷¹ß�� f � Ù ÿ � ÷°ß�� � ½ Í ¸BË � � ÿ � ÷°ß�� � Ù ÿ � ÷°ßb� f � ³²¶Ì½Á³t±²¶î¾î½3¦�¨«¾º¨«ì°®�±²µ¢®�®¹¯²¯È¶Á¯®H¦�Ï ¶ÕÍ¢®°Íα\z�¨ å ®Áå$z

ª­¨«¾�srut ` á ßÊ ª«¶ÁÔ a ü¯ wvyx{z 5 3 | v�} 5 Ô Ë � Û : � Û X Ý a�~ Ý ºX Ö ced �ú Íã±Èµ¢®Ú½ ¬x¶|èÁ®ïÂÒµ»½ ª«ª­®¹Í¢ÔÁ®í¶ÁÍ¢®í¾î½ À�Ï¢ª­×»Ô ¨«Í ½ÁÍÎÀ�Í»¶ ±²¨«¶ÁÍ ¶ ¼ ®<;ÌÂè«®°Í»Â°À�¶ÁÍ¢®É¼�®°®°ªÐ³îÂöվº¼�¶Á¯²±È½ ¬»ª­®í·t¨Ç±Èµ�å ¤ ®·t¨«ª­ª¦×»³²®�±Èµ¢® Í»¶ ±²¨«¶ÁÍ~¶ ¼�)�Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªé±²¨«¾¿®ºÂ°¶Á¾¿Ï¢×�±Ò½ ¬¢¨«ª­¨­±ðÀ�+¿¼�¶Á¯Ö³�±È½ ¯²±²®¹¯È³¹å çé½|±È®°¯\zx·´® ·t¨«ª«ª ³²·t¨Ç±ÒÂÒµ ±È¶É¾¿¶Á¯È®®�;Ì°¨­®¹ÍÕ±�Í»¶ ±²¨«¶ÁÍ ³t³�×»ÂҵƽÁ³�ª«¨«Í¢®¹½Á¯�±²¨«¾º®�°¶Á¾¿Ï¢×�±Ò½ ¬¢¨«ª«¨Ç±ðÀÕå¡ Í¢¼�¶Á¯²±²×¢Í»½ ±²®¹ª­Àï±²µ»¨«³©ÂÒµ»½ ª«ª«®°Í¢ÔÕ®�¨«³�±²¶ê¶É°¶Á¾¿Ï¢ª«®H¦Æ±²¶íµ»½ Í ¸�ª­® ½ ª«ª ½ ± ¶ÁÍ ÂîÁå�{�µ¢® � ½ ¾¿¾¿¨­Í¢Ôï³�®°±²×¢Ï~Ï¢¯²¶|èê¨Ð¸�®¹³�½Í¢¨ÐÂî�¾¿¶�¸�×¢ªÐ½ ¯Ë¬¢¯È®¹½ Ñ�¸�¶|·tͺ¶ ¼�±Èµ¢®t±È½Õ³�Ñ�åY{z¶ ¾º¶Á±²¨«è|½|±²®�±²µ¢¨Ð³?z곲עϢÏx¶Õ³²®�·Ë®�¨­Íα²¯È¶�¸�׻°®¹¸ ±²µ¢® � ½Á¾º¾¿¨«Í¢Ô�èÕ®°¯Ò³�¨«¶ÁÍ

ß � ���7õ

Page 88: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

¶ ¼¦±Èµ¢® Ï¢¯È¶Á¬»ª­®¹¾�z ·tµ¢®°¯È®�½ Í 0}4A$3<HI�K?0�INT ¨«³ ½ ª«ª­¶|·´®¹¸í±È¶ÉÂÒµ¢¶ê¶Õ³²®Ö±²µ¢® ¾º®Ó³²³È½ ÔÕ®�½ Í»¸Æ¨«Íα²¯È¶�¸�×»Âî ®°¯È¯²¶Õ¯È³°z�×¢ÏƱ²¶í½³²Ï ®ÓÂè­Ø»®¹¸ïª«¨­¾¿¨­± ì å«{�µ¢®°Íï±²µ»®�½ ¬x¶|èÁ®©Ï¢¯²¶Õ¬¢ª«®°¾ ±È¯È½ÁÍ»³ð¼�¶Õ¯²¾î³Ë±²¶ �

��� { T !D�"�ãsG� uFgÖy�h(m é {��Ûæ §©¨­èÕ®°Í¿Ù 8 � ػͻ¸ ±²µ»®´ªÐ½ ¯ÈÔÁ®Ó³ð±Áû ½ÁÍ»¸ ½ÁÍ ®�;Ì°¨­®¹ÍձȪ­À ÂöÁ¾¿Ï¢×¢±È½ ¬»ª­®¼v½ ¾¿¨­ª«Àº¶ ¼�¼�עͻÂñ²¨«¶ÁÍ»³ ÿ : � � � ½ÁÍ»¸ ÿ Ë � � � ·tµ¢®¹¯²® : � �»ÿ � ÷¹ß�� f � Ù ÿ � ÷°ßb� � ½ÁÍ»¸eË � �¢ÿ � ÷¹ß�� � Ùÿ � ÷¹ß�� f � ³�× Âҵɱȵ»½|± �Ú ~ ���ÉÛ�Ñz÷�û�ÊzÝÃ÷ Ë � Û : � Û X Ý a�~ Ý ÛX �

ú ÍÖ±²µ»¨«³é³�®°±²×¢Ï�¶ÕÍ¢®Å°½ÁÍ�¸�®¹Â°¶ÁעϢª«®bz ½|±éª­®Ó½Á³�±zÏ»½ ¯²±²¨Ð½ ª«ª«Àbzñ𷴶�³�±²®°Ï ³�¨«ÍÖ±²µ¢®üÔÕ¶Õ½Áª � � ¨­¯Ò³�±�±²µ¢®Å¨­¾î½ ÔÕ®ø¶ ¼ê±²µ»®ü®°Í»Â°¶�¸�¨­Í»Ô¼�עͻÂñ²¨«¶ÁÍí¬ ®°±�±²®¹¯�¬ ®Ö½�Ôնζ�¸î®¹¯²¯È¶Á¯[� ÂöÁ¯È¯È®¹Âæ±È¨­Í»ÔÖ°¶�¸�®Áå|Ï�®?¦ê±°zα²µ¢¨Ð³´®°¯È¯²¶Õ¯t� Âöկ²¯È®¹Âñ²¨«Í¢Ô�Âö�¸�® ¬ ®°±�±²®¹¯�µ»½ èÁ®©½�ÔÁ¶ê¶�¸¸�®ÓÂö�¸�¨«Í¢Ôº½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾Æå|{�µÎ× ³Ë¬êÀ¿ØD¦�¨«Í¢Ô ±²µ¢®Ö¨«ÍձȮ°¯È¾¿®¹¸�¨Ð½|±È® Ïx¶Á¨«Íα�z Í ½ ¾¿®°ª«Àbzα²µ»®©®¹¯²¯È¶Á¯�Âöկ²¯È®¹Âñ²¨«Í¢Ô °¶�¸�®bzê·´®ÔÁ®°±ø±ð·Ë¶�¨«Í»¸�®¹Ï ®¹Í»¸�®¹ÍÕ±ËÏ¢¯²¶Õ¬¢ª«®°¾î³?zÕ·tµ¢¶Õ³²®tÔÁ¶Î½ ªÐ³ø°½Áͺ¬x®�¸�®ÓÂöÕעϢª«®¹¸�å|�Შ«ª«ª¢±²µ»®t±È½Õ³�Ñ ¶ ¼�¸�®Ãػͻ¨­Í¢Ô�±²µ¢®�Ï»¯²¶Õ¬¢ª­®¹¾î³Ï¢¯È®¹Â°¨«³²®°ª«Ą̀г�¯²¨Ð¸¢¸�ª«®¹¸ï·t¨­±²µÚ³�×»¬�±²ª«®Ã±È¨­®Ó³°å(�궿·´®�·t¨­ª«ª�¸�¶Ì³²¶î³�ª«¶|·tª­ÀÕå

�ont�²�ø��± f�¸����t���[¸@ÿ¤ µ»½ ±Ö°¶Á×¢ªÐ¸Ú¬x® ¬x®º³²×¢¬�±Èª­®¿½ ¬x¶Á×¢± ±Èµ¢® ¼�¶Õª­ª«¶|·t¨«Í¢Ô,¯Î×¢®¹³�±²¨«¶ÁͲ��)ȧ©¨«èÁ®°Í ½î¼v½ ¾¿¨«ª­ÀƶÁ¼ËÂö�¸�®Ó³�Ä ÿ � � � � ·t¨Ç±Èµ� � ¬ ®¹¨­Í»Ôí½ Í Û�Êø÷]Â�÷²ùêÝ , °¶�¸�®bz ػͻ¸ ½ ÍÚ®�;Ì°¨­®¹ÍÕ± ¼v½ ¾¿¨«ª­Àƶ ¼Å½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾î³ : � � � � Ù � � ³²¶î±²µ ½|±©±²µ¢® ¨­¾î½ ÔÕ®¶ ¼ : � ®°¯Î×»½Áª«³l� � å +Î{�µ¢¨«³�¸�®Ãػͻ¨Ç±È¨­¶ÕÍڷ˶կ²Ñ�³Ë¼�¶Á¯t¾¿¶Õ³�±�Ï¢×¢¯ÈÏx¶Õ³²®¹³°z¢½ Í»¸ï·´®�·t¨­ª«ª�¬x®�µ»½ Ï¢ÏêÀÌ·t¨­±²µÚ¨­±¹å � ¶|·´®°èÁ®¹¯¨­±�·t¨­ª«ª�¬x®�ÔÁ¶ê¶�¸Ì±È¶º¯È®¹Â°¶ÁÔÕÍ¢¨­ì¹®�±Èµ»½|±t±Èµ¢®°¯È®�½ ¯È®©¨«³È³�×»®¹³�µ¢®¹¯²®©±²µ ½|±�¾¿¨­Ôյα�¨­ÍêèÁ¶Õª­èÕ®©ÂÒµ»¶Á¨ÐÂî¹³¹å{�µ¢® ¾¿½Á¨­Í~¨«³È³�×»®bz�³ð±Ò½|±È®¹¸Ú¨«ÍÍ)ȸ¢½|±Ò½Ì³ð±È¯²× Âæ±²×»¯È½ÁªzªÐ½ Í¢ÔÕ×»½ ÔÕ®!+Dz ¨«³�±²µ»®º¸�¨Ð³�±²¨«Í»Âæ±È¨­¶ÕÍ~¬x®Ã±ð·´®°®°Í Z:I[<�Z:I[G\P�<NK�K ' 2WV ½ÁÍ»¸ã?MR<HINT ' 2�V å« Å¯²®¹Ï¢¯²¶�°®¹³È³�¨«Í¢Ô�¨Ð³Ë±²µ¢®Ö·´¶Á¯ÈÑ ·´®©¸¢¶º¸�×»¯²¨«Í¢Ô ±²µ¢®�¸�®Ó³�¨«ÔÁÍÌÏ»µ»½Á³²® ¶Á¼�±²µ»®Ö°¶�¸�®ÁåT� ×¢®¹¯²À¿Ï¢¯È¶�Âȳ²¨­Í¢Ô ¨«³±²µ»®©·´¶Á¯ÈÑî·´®Ö¸¢¶ ±È¶º®¹Í»Âö�¸�®�½ºÔÁ¨«èÁ®¹Íɾ¿®¹³È³È½ ÔÁ®}zê·t¨Ç±Èµï½Áª­ª�±Èµ¢®�µ¢®°ª«Ïí±²µ»½ ±´±Èµ¢®�Ï¢¯È®°Ï¢¯È¶�Âîӳ²³²¨­Í»Ô ³�±È½ ÔÕ® ¾î½ Àîµ»½ èÕ®ÔÁ¨«èÁ®¹Í�å{�µ¢® ÔÕ¶Õ½Áª«³¿¶Á¼©Ï¢¯È®°Ï»¯²¶�Âîӳ²³²¨«Í¢Ô�½ ¯È®ï¶Á¼Ü±²®¹Í¡¾º¨Ð³²×¢Í»¸�®¹¯È³�±²¶ê¶�¸�å ¡ Í¢ª«®¹³È³Ì¶ÁÍ»®ÚÏ¢¨­Í ³Ì¸�¶|·tÍ ±²µ»®Æ¼v½ ¾¿¨­ª«À ¶ ¼�Âö�¸�®Ó³¯Î×¢¨­±²® ³²×»Â°Â°¨­Í Âæ±²ª«À <�OQP ' <?2:P?T ·t¨Ç±ÈµÚ¯²®Ó³�Ïx®¹Âñt±²¶¿±Èµ¢¨«³�±È½Õ³�Ñí¾¿½ ÀíÍ¢¶ ±�¾î½ÁÑÁ®�½¿ª«¶ ±�¶ ¼ø³²®°Í»³²®Áå©Û x ÍÚ®?¦¢½ ¾¿Ï¢ª«®�¶ ¼ø½¯Î×¢®¹³�±²¨«¶ÁÍ¿±Èµ»½|±´¸�¶ê®¹³üÍ»¶ ±Å¾î½ ÑÕ®�³�®¹Í»³²®�ÔÁ¨«èÁ®¹Íº·tµ ½|±Å·´®�ÑêÍ¢¶|· ¨«³ � ) � ¶|· ¼v½Á³�±´Â¹½ Íº±²µ¢® ÔÁ®¹Í¢®°¯Ò½|±È¶Á¯ø¾î½|±È¯²¨=¦ ¶Á¼�½Áͽ ª«ÔÁ®¹¬¢¯Ò½ ¨ÐÂN� ÔÁ®°¶Õ¾¿®Ã±²¯ÈÀí°¶�¸�®¿¬ ®îÂöÕÍ»³�±²¯È×»Âæ±È®¹¸���+ ¤ ®ºÑêÍ¢¶|· ³²¶Á¾¿®î³²Ï ®ÓÂè­Ø Â�¼v½Á¾¿¨­ª«¨­®Ó³©¼�¶Á¯Ö·tµ¢¨ÐÂÒµ~±Èµ¢¨Ð³£¯Î×¢®Ó³ð±È¨­¶Õͨг̷´®°ª«ª*� ¸�®ÃØ Í¢®¹¸4z ¬»×�±É¨«Í¡ÔÁ®°Í»®°¯Ò½ ªSz´µ»¶|·¤¸�¶�·´® ®¹èÁ®°Í ¯È®°Ï¢¯È®¹³²®°Íαî±Èµ¢®~½ ª«ÔÁ®¹¬¢¯Ò½ ¨ÐÂíÔÕ®°¶Õ¾º®°±²¯ÈÀ Âö�¸�®~·tµ¢¶Õ³²®ÔÁ®¹Í¢®°¯Ò½|±È¶Á¯´¾î½|±²¯È¨=¦í¨Ð³´±²¶¿¬ ®�°¶ÁÍ»³�±²¯È×»Âñ²®¹¸�å Ý{�µ¢®�¨Ð³²³²×¢®©±²µ ½|±�¸�¶ê®¹³�¾¿½ÁÑÁ®�³²®°Í»³²®©±²¶¿¼�¶�ÂÃ×»³�¶ÁÍiz�¨Ð³�±²¶Ì½Õ³�Ñ¿±Èµ»½|±�±²µ¢®�¶Õ×�±²Ï¢×¢±�¶ ¼ ±²µ¢®�Ï¢¯È®°Ï»¯²¶�Âîӳ²³²¨«Í¢Ôº³�±È½ÁÔÁ®Ö¬x®³²×»Â°Â°¨­Í»Âñ¹å ú ¼�±Èµ¢®�Âö�¸�®©¨«³�ª«¨«Í¢®¹½Á¯°zα²µ»®°Íí½ºÂÒµ¢¶Õ¨«Â°®�¼�¶Õ¯Ë±Èµ¢®Ö¶Á×�±ÈÏ¢×�±�¨«³�¶Õ¬êèΨ«¶Á× ³ � ¢ ×�±²Ï»×�±�±²µ¢®©ÔÁ®¹Í¢®°¯Ò½|±È¶Á¯´¾¿½ ±²¯È¨*¦Û�¶Õ¯�½ ª«¾¿¶Õ³�±t®°¯Î×¢¨«è ½Áª­®¹ÍᲪ«Àbz�±Èµ¢®�Ï»½Á¯²¨­±ðÀÉÂÒµ¢®ÓÂÒÑ̾î½|±²¯È¨=¦¢ÝÃåe¬´×�±�½¿¾¿¶Á¯È®�³²½ ±²¨Ð³ð¼v½ÕÂæ±È¶Á¯ÈÀɽ Í»³²·´®°¯\z¢½ Ï¢Ï¢ª«¨Ð°½ ¬»ª­®©±²¶Ì½Áª­ªÂö�¸�®Ó³�½ Í»¸~Í¢¶ ±Õáð×»³�±�±²µ»®ºª«¨«Í¢®¹½Á¯�¶ÁÍ¢®Ó³?z�¨Ð³©±²¶Æ¶Á×¢±²Ï¢×�± ½ïÂ諯ÒÂÃ×¢¨­±�¸�®¹³ÈÂïȨ­¬»¨­Í¢Ôí±²µ»®�¯Õ×»®°¯ÈÀÚÏ¢¯²¶�°®¹³È³�¨«Í¢Ôí¼�עͻÂæ±È¨­¶Õͱ²¶Á±È½Áª­ª«À�ÂöÁÍ ³ð±È¯²×»Âñ²¨«èÁ®¹ª­ÀÕåãÛ��ê×»ÂÒµ ½~Â諯ÒÂÃ×¢¨­± ·´¶Á×¢ªÐ¸þ¬x®ï°¶Á¾¿Ï ¶Î³�®Ó¸þ¶ ¼�¬¢¨«Í»½Á¯²À ª­¶ÕÔÁ¨ÐÂîÔÕ½ ±²®Ó³�µ¢¶ê¶ÁÑÕ®¹¸þ×¢Ï ½Á³ ½ÁͽÁ°À�Âꫨ«Â�¸�¨«ÔÁ¯Ò½ Ï»µí·t¨­±²µdÂí¨«Í¢Ï¢×�±©·t¨­¯È®¹³t½ÁÍ»¸ÆÊ ¶Õ×�±²Ï»×�±�·t¨«¯²®Ó³°å�U˶Á¾¿Ï¢×�±È¨­Í¢Ô¿±Èµ¢®�¶Õ×�±²Ï¢×¢±�¶ ¼ ±²µ¢® Â諯Ȱע¨Ç±\z»ÔÕ¨­èÕ®°Í½ ØD¦�®¹¸ï¨«Í¢Ï¢×�±t±Ò½ ÑÁ®Ó³´±²¨«¾¿®�ª­¨«Í¢®¹½Á¯t¨­Íï±Èµ¢®�³�¨«ì°®Ö¶Á¼z±²µ»®�Â諯Ȱע¨Ç±Óå ݤ µ»½ ±º½ ¯È®î±Èµ¢®É¯È¨­Ôյα ÔÁ¶Î½ ªÐ³Ö¼�¶Á¯ ±²µ¢®Ç)[¯Î×¢®¹¯²À Ï¢¯È¶ê°®¹³È³�¨«Í¢Ô@+ÆÏ¢µ»½Á³²®��.{�µ¢®ÌÔÕ¶Õ½ÁªÅ¨Ð³�¼v½Á¨­¯Èª­À ¶Á¬êèꨫ¶Á×»³ µ¢®°¯È® �F¤ ®·´¶Á×¢ªÐ¸Æª­¨«ÑÁ®Ö±Èµ¢®�®¹Í»Âö�¸�¨«Í¢Ô̶Á¼ ±Èµ¢®�¾¿®¹³È³È½ ÔÁ®Ö±È¶Ì¬x®�Ï ®¹¯�¼�¶Õ¯²¾¿®Ó¸Ú½Á³t®<;î°¨­®¹ÍᲪ«Àï½Õ³tÏ ¶Î³²³²¨«¬¢ª­®Õå��¢¶Á¯�ª­¨«Í¢®¹½Á¯�Âö�¸�®Ó³?z¨­¼¦·´®�¼�¶Õ¯È°®Ö±²µ¢® Ï¢¯²®¹Ï¢¯È¶ê°®¹³È³�¨«Í¢Ô¿Ï¢µ»½Õ³�®Ö±È¶Ì¶Á×¢±²Ï¢×�±Ö½¿ÔÁ®¹Í¢®°¯Ò½|±È¶Á¯t¾î½|±È¯²¨=¦Øz¢±²µ»®°ÍƱ²µ»®Ð¯Î×¢®°¯ÈÀÉÏ»¯²¶�Âîӳ²³²¨«Í¢Ô³|áð×»³ð±½ ¾¿½ ±²¯È¨*¦�� èÁ®ÓÂæ±²¶Õ¯üÏ¢¯È¶�¸�×»Âæ±t½ Í ¸É°½ÁÍɬx®©Â°¶Á¾¿Ï¢×�±È®¹¸É¨­ÍïÏ ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª Û ³�Ïx®¹Â°¨ÇØ Â¹½ ª«ª­À�è¿ÛvÊ / ݲÝø±È¨­¾¿®Õåüçz½|±È®°¯´¨­Íí±²µ»®ÂöÕ×¢¯Ò³�®}z�·Ë®�·t¨«ª­ª�¼�¶ê°׻³t¶ÕÍí±Èµ¢®Ö±È½Õ³�Ñɶ ¼ø¸�¶Á¨«Í¢Ô¿±²µ»¨«³t¾¿¶Õ¯²®Ö®�;Ì°¨­®¹ÍձȪ­À�z ¬¢×�±�¼�¶Á¯tÍ¢¶|·�z¢·´®�·t¨«ª­ªz°¶ÁÍ»³²¨Ð¸�®°¯�±Èµ¢¨«³ÔÁ¶ê¶�¸Æ®°Í»¶Á×¢ÔÕµ�åq¢ ÍƱ²µ¢® ¶ ±²µ»®°¯�µ»½ÁÍ»¸Øzx¨Ç¼ø±Èµ¢® Ï»¯²®¹Ï¢¯²¶�°®¹³È³�¨«Í¢Ô¿Ï¢µ»½Õ³�®�¶Õ×�±²Ï»×�±È³ ½ ÍÚ®°Í Âö�¸�¨«Í¢ÔÉÂ諯ÒÂÃ×¢¨­±°z ±²µ¢®¹ÍÚ±²µ»®³²¨­ì¹®©¶Á¼é±Èµ¢®�¶Á×¢±²Ï¢×�±�¶Á¼z±Èµ¢®ÖØ»¯Ò³ð±�Ï¢µ ½Á³²® ' K ±²µ¢®�¯Èע͢ͻ¨­Í¢Ôº±È¨­¾¿®�¶ ¼ ±²µ»®�¯Õ×»®°¯ÈÀÌÏ¢¯È¶ê°®¹³È³�¨«Í¢ÔºÏ¢µ»½Õ³�®Õå¤ ®�ÂöÁÍ Âê«×»¸�®Ö·t¨Ç±Èµï±²µ¢®Ö¼�¶Õª­ª«¶|·t¨­Í»Ô ±ð·´¶î½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾¿¨ÐÂ�±Ò½Á³²Ñ�³ �

ß � ���b�

Page 89: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

gÖy {7N y3h Z {ôOiO¹sD�éuÎgÖy3h�m é {��Ûæ �¢¶Õ¯�½ºØD¦�®¹¸í¼v½ ¾¿¨«ª­À̶Á¼¦Â°¶�¸�®¹³�Ä|z�ÔÕ¨­èÕ®°ÍÚ½ Íï¨­Í ¸�®H¦�å]z ÂöÁ¾¿Ï¢×¢±²®�½ Í®°Í»Â°¶ê¸¢¨­Í¢Ôî°¨­¯ÒÂÃ×¢¨­±�Û�¶Õ¯�±²µ¢®�ÔÕ®°Í¢®¹¯È½ ±²¶Á¯�¾î½|±È¯²¨=¦»Ýż�¶Á¯�±²µ»®�å ±ÈµÚÂö�¸�®Ö¶ ¼ ±²µ¢®Ö¼v½Á¾¿¨­ª«ÀÁå

x ·Ë®Ó½ ÑگȮ°¯Î×¢¨«¯²®¹¾¿®°Íα©¨Ð³ ±²µ»½ ±Ö±²µ¢®î½ ¬x¶|èÁ®ºÏ¢¯È¶�¸�×»Â Í ¶Á×¢±²Ï¢×�±Ö±Èµ»½|±�µ»½Õ³©³²¨«ì°® ±²µ»½ ±Ö¨Ð³�½íÏ ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ªø¨«Í Ê æz ±²µ¢®Ì¬»ª­¶�ÂÒÑ ª­®¹Í¢Ô ±Èµã¶ ¼�±²µ»®,å ±²µ °¶�¸�®Áå x ³ð±È¯²¶ÕÍ¢ÔÁ®¹¯�¯²®\¯Õ×»¨­¯È®°¾¿®°Íα ¨Ð³�±Èµ»½|± ±²µ¢®ï½ ¬x¶|èÁ®îÏ¢¯È¶�Âîӳ²³Ö±Ò½ Ñծ¨«¾¿®Ïx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª�¨«ÍÚÊ æ åÕ{�µ¢®�ÔÁ¶ê¶�¸ïÍ¢®°·�³�µ¢®°¯È®�¨«³�±²µ»½ ±�¼�¶Á¯�ª­¨«Í¢®¹½Á¯�Âö�¸�®Ó³t±²µ»®�·Ë®Ó½ Ñ̯Ȯ°¯Î×¢¨«¯È®°¾¿®°Íα�°½ÁÍÚ½ ª«·´½ À�³�¬x®¼�×¢ª­Ø»ª«ª­®Ó¸�å{�µ¢®�³²®¹Â°¶ÁÍ»¸ï½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾¿¨ÐÂ�±Ò½Á³²Ñ5z¢ÂöÁ¯È¯È®¹³²Ï ¶ÕÍ»¸�¨«Í¢Ô ±È¶º±²µ¢®B)]¯Õ×»®°¯ÈÀÌÏ¢µ»½Õ³�®�+ ¨Ð³ �

P~� Z h?¹ sG� u�gÖy3h�m é {��Ûæ §©¨«èÁ®¹Íɽ ÍͻÂö�¸�¨«Í¢Ô °¨­¯ÒÂÃ×»¨Ç± : Û�¶Õ¯ü±²µ»®�ÔÁ®¹Í¢®°¯Ò½|±È¶Á¯ü¾î½ ±²¯È¨*¦»Ý ¼�¶Õ¯ü±²µ»®qå ±²µ¾º®¹¾ ¬x®°¯t¶Á¼¦½ ¼v½ ¾¿¨«ª­Àɶ ¼øÂö�¸�®¹³´Ä|z¢½ÁÍ»¸Æ½ ¾¿®Ó³²³È½ ÔÕ® � z¢Â°¶Á¾¿Ï¢×�±È®Ö¨Ç±Ò³t®°Í»Â°¶�¸�¨­Í»Ô»å

¢�¼øÂöÁ×»¯È³²®bzꨫÍí±Èµ¢¨Ð³�³�®¹Í»³²®bzê±²µ»®�®°Í»Â°¶ê¸¢¨­Í¢Ô¿Ï¢¯È¶Á¬»ª­®¹¾�¨«³t±²¯È¨­èê¨Ð½ ª�±²¶î³²¶Áª«èÁ®Ö¨«Ííª«¨­Í»®¹½ ¯�±È¨­¾¿®�¨«Íï±²µ¢®�³²¨­ì¹®�¶ ¼ : åx ³´¾¿®°ÍαȨ­¶ÕÍ¢®¹¸É®¹½ ¯Èª«¨­®¹¯°zηˮ©·´¶ÁÍi® ±�¸¢·Ë®¹ª­ª�¶ÁÍ̱²µ¢®�³²×¢¬�±²ª«®Ã±È¨­®Ó³´¨­Íα²¯È¶�¸�׻°®¹¸Ì¨«Í̱ȵ¢¨Ð³t³�®ÓÂæ±²¨«¶ÁÍí¸�×¢¯È¨­Í¢Ô ±²µ»¨«³�ÂöÕ×¢¯Ò³�®Õ嬴×�±t±²µ»®°ÀɶÕ×¢ÔÁµÎ±�±²¶¿¬x®�ÑÁ®¹Ï�±�¨­Í﾿¨­Í ¸Øz»·tµ¢®¹Í︢®¹³²¨­ÔÕÍ¢¨­Í»Ô¿½ÁÍ»¸ï®°è|½ ª«×»½ ±²¨«Í¢Ôº±²µ¢®B)²×�±²¨«ª­¨­±ðÀ�+º¶ ¼éÍ»®°·àÂö�¸�®¹³¹å

�ont�²�ø��Ü ¡�z���t���[¸@ÿú Í�¼�¶Õ¯²¾î½ ª«ª«Àbzé±²µ¢®ÌÏ»¯²¶Õ¬¢ª­®¹¾ ±È¶ ¬ ®Ì¼�¶Á¯È¾¿½Áª­¨«ì°®Ó¸ ¨«³ � §©¨«èÁ®¹Íþ½~ÂöÁ¯È¯È×¢Ï�±²®Ó¸~èÕ®°¯Ò³�¨«¶ÁÍ y � Å � , ¶Á¼�½ÁÍ�®°Í»Â°¶�¸�¨­Í»ÔÚ¶ ¼¾¿®¹³È³²½ÁÔÁ® � z�ÂöվºÏ»×�±²® � å � ¶|·´®°èÕ®°¯Ë±²µ¢®�Ï¢¯È¶Á¬»ª­®¹¾ ¨«³�Í¢¶Á±t·Ë®¹ª­ª=� Ïx¶Õ³²®¹¸íÀÁ®°±°z¢³²¨­Í Âîַˮ©µ»½ èÕ®°Íi® ±l¯Õ×»¨Ç±È®©ÔÕ¨­èÕ®°Íï½¼�¶Á¯È¾î½ ªz¸¢®Ãػ͢¨­±²¨«¶ÁÍƶÁ¼ � å x Í¢¶Á±²µ¢®¹¯�¨Ð³²³²×¢®�¨Ð³�±²µ¢®�³²Ïx®¹Âè­Ø ¹½|±²¨«¶ÁÍƶÁ¼ ±Èµ¢®�®°Í Âö�¸�¨«Í¢Ô¿¼�עͻÂñ²¨«¶ÁÍ : å ¤ µ¢®°Íڨг�±Èµ¢¨«³³²Ï ®ÓÂè­Ø»®¹¸�� x Í»¸ïµ¢¶|·ë¾ ×»Âҵﱲ¨«¾¿®�½ ¯È®Ö·Ë®ÖÔÁ¨«èÁ®¹Íɱȶî¸�®¹³²¨­ÔÕÍɱȵ¢®�¸�®ÓÂö�¸�¨«Í¢Ôî½ ª«ÔÁ¶Á¯È¨­±²µ¢¾���¢¶Õ¯ü±Èµ¢®�Ø ¯È³�±Ë¨Ð³²³²×¢® �½� ¶|· ¨Ð³ � ¸�®Ãػͻ®¹¸Ì½Õ³Ë½Ö¼�׻ͻÂæ±È¨­¶ÕÍɶ ¼ y zα²µ»®�Í»½ ±²×¢¯Ò½ ªx¸�®Ãػͻ¨Ç±È¨­¶ÕÍɬ»½Õ³�®Ó¸¿¶ÁÍî±Èµ¢®£�êµ ½ Í¢Í¢¶ÕÍÂÒµ»½Áª­ª«®°Í¢ÔÕ®�¸�®¹³ÈÂïȨ«¬ ®Ó¸Ú½ ¬x¶|èÁ®bz»¨«³�±Èµ¢® �ª0 )}' �7M^�.; ' Jb<?; ' CDG\G\4�$�<�P?>�G�I z ¨ å ®Áå$z»±Èµ¢®�èÁ®ÓÂæ±È¶Á¯ � ¼�¶Á¯ ·tµ¢¨«ÂҵƱȵ¢®�Ï¢¯È¶Á¬D�½ ¬»¨­ª«¨Ç±ðÀ ±²µ»½ ±©±Èµ¢®¿¯²®ÓÂ­èÕ®¹¸ èÕ®¹Âñ²¶Á¯Ö¨Ð³ y ¨Ð³Öª«½Á¯²ÔÕ®¹³�±°z�ÔÁ¨«èÁ®¹Í ±²µ»®îÏ¢¯²¶Õ¬»½ ¬»¨­ª«¨«³�±²¨ÐºÂÒµ»½ Í¢Í»®°ª åÐ{�µ¢¨Ð³Ö¾¿¶ ±²¨«è|½|±È®¹³©±²µ»®¼�¶Áª«ª«¶|·t¨­Í¢Ô¿Ï¢¯È¶Á¬»ª­®¹¾ �

! � sv� w½� �Ës�åx{ é s � hih?¹Ó�í{ Z h?¹ésD�éué� §©¨­èÕ®°Í ½ ÂÒµ»½ Í»Í¢®°ª�U˵»½ Í¢Í»®°ªÖÂöÁ¯È¯È×¢Ï�±²¨«Í¢Ô ³�±²¯È¨«Í¢Ôճɨ­ÍÅ � , Ù Å � , zx½ ÍÆ®°Í»Â°¶�¸�¨­Í»Ô¿¼�עͻÂæ±È¨­¶ÕÍ : � Å �, Ù Å � , z ½ÁÍ»¸Æ½¿¯²®ÓÂ­èÕ®¹¸íèÁ®¹Âñ²¶Õ¯ y ��Å � , Ø»Í ¸ � �BÅ �,±²µ»½ ±�¾î½�¦ê¨«¾¿¨­ì¹®¹³� ů6�Q�^� �^� Z U Ô y� U˵»½Á͢͢®°ª Û : Û � ݲÝ�Ö å

¤ µ¢®¹Íí±Èµ¢®�ÂÒµ»½Á͢͢®°ª�Í»¶Á¨Ð³�®Ö¾¿¶�¸�®°ª�¨Ð³�±Èµ»½|±t¶ ¼ ±²µ»® " � ½Á¯²À̳²À꾺¾¿®°±²¯È¨«Â�ÂÒµ»½Á͢͢®¹ª�zê±Èµ¢®°Íï±²µ»¨«³l¯Î×¢®Ó³ð±È¨­¶ÕÍï³²¨«¾ºÏ»ª­¨­Ø»®¹³±²¶º±Èµ¢® � ½Á¾º¾¿¨«Í¢ÔîÏ¢¯È¶Á¬¢ª«®°¾ ¬ ®¹ª­¶|· �

� {W!¢y {ôOÇ� è h?¹ {2+ah yn¹ gÖy3h(m é {��¡� §©¨­èÕ®°Íë½ÁÍ�®°Í Âö�¸�¨«Í¢Ôã¼�×¢Í Âæ±²¨«¶ÁÍ : � Å �, Ù Å � , z ½ÁÍ»¸ ½¯²®ÓÂî°¨«èÁ®Ó¸ÌèÕ®¹Âæ±È¶Á¯ y �,Å � , ػͻ¸ � ��Å �, ±Èµ»½|±�¾¿¨«Í¢¨­¾¿¨«ì°®Ó³q ïÛ y ÷ : Û � Ý�ÝÃå

{�µ¢®�Ï»¯²¶Õ¬¢ª­®¹¾î³ü½ ¬x¶|èÁ®t½ ¯È®t¬x¶ ±²µ�¯Õ×»¨Ç±È®�µ»½ ¯Ò¸�å«¢ ͺ±²µ¢® ¶ÁÍ¢®tµ»½ÁÍ»¸ØzÕ±²µ¢®¹Àº¸¢¶ÁÍi® ±Ë½ ª«ª«¶|· ±Èµ¢®�¸�®ÓÂö�¸�¨«Í¢Ô�½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾±²¶ÖÏ¢¯È®°Ï»¯²¶�Âîӳ²³é±Èµ¢®�Âö�¸�®´±²¶Ö¬x®�¸�®¹Â°¶�¸�®¹¸�åY�¢×»¯�±Èµ¢®°¯\z|±²µ»®°À ½Õ³�Ñ�¼�¶Õ¯ø®°¯È¯²¶Õ¯t� Âöկ²¯È®¹Âñ²¨«¶ÁÍÖÏx¶Õ³È³�¨«¬¢ª«À�·Ë®¹ª­ª�¬x®°ÀÕ¶ÁÍ»¸ ±²µ»®¸�¨Ð³ð±Ò½ Í»Â°®t¶ ¼ ±²µ¢®�°¶�¸�®Áå|�ê¶Ö¨Ç±´³�µ¢¶Õ×¢ªÐ¸ Í¢¶Á±ü¬ ®�½�³²×¢¯ÈÏ¢¯È¨«³²®Å±Èµ»½|±ËèÁ®°¯Ò³²¨­¶ÕÍ»³ ¶ ¼»±Èµ¢®¹³²®tÏ¢¯È¶Á¬¢ª«®°¾î³¦¬x®¹Â°¶Á¾¿®lÏq «� µ»½Á¯È¸�åú ͺϻ½ ¯²±²¨ÐÂÃ×¢ªÐ½ ¯\z3¬´®°¯Èª­®¹Ñ ½Á¾¿Ïiz�­ Â í ª­¨«®¹Â°®bzÁ½ÁÍ»¸�è|½ÁÍÐ{�¨«ª­¬x¶Á¯ÈÔ7Ô­ß°�3Ö»³�µ¢¶|·´®¹¸�±²µ»½ ± ±Èµ¢® Èa<�03I]<NKN>T_«G\4b<?c(G3I[4=�nI[G}ÌH;$<H�½ ¬x¶|èÁ® ¨«³9Ïq «� µ ½ ¯Ò¸Øz ®¹èÁ®¹Í ·tµ¢®°Í~±²µ¢®º®°Í Âö�¸�¨«Í¢Ô̼�×¢Í Âæ±²¨«¶ÁÍ ³©½Á¯²® ¯²®Ó³ð±È¯²¨ÐÂæ±È®¹¸Æ±È¶í¬x®ºª­¨«Í¢®¹½Á¯�¼�׻ͻÂæ±È¨­¶ÕÍ»³©ÔÁ¨«èÁ®°ÍÚ¬êÀ±²µ»®°¨«¯�ÔÁ®¹Í¢®°¯Ò½|±È¶Á¯�¾î½|±È¯²¨=¦�åÉçz½ ±²®°¯\zY¬Ë¯È×»ÂÒÑ~½ÁÍ»¸ÎÏ�½Á¶Á¯,Ô � �3Ö´³�µ¢¶|·´®¹¸~±²µ ½|± ¶ÕÍ¢®ÌÂöÕ×¢ª«¸ ®¹èÁ®°Í ØD¦ ±²µ»®î¼v½ ¾¿¨«ª­À ¶ ¼Âö�¸�®Ó³?z�½ÁÍ»¸Æ±²µê×»³ ±Èµ¢®º¸¢®¹Âö�¸�¨«Í¢Ôï½ ª«ÔÁ¶Á¯È¨­±²µ¢¾ ÂöÕ×¢ª«¸~¬ ®¿½ ª«ª«¶|·Ë®Ó¸ï±²¶ÉÏ»¯²®¹Ï¢¯²¶�°®¹³È³t±²µ»®ºÂ°¶ê¸¢®bz�½ Í»¸ ±²µ¢®ºÏ¢¯È¶Á¬¢ª«®°¾¯È®°¾î½ ¨«Í»³�µ»½Á¯È¸ Û�עͻª­®Ó³²³�Ï� µ»½Á³�Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª�³²¨­ì¹®¹¸ïÂ諯Ȱע¨Ç±Ò³ÈÝÃå

ß � ���bÍ

Page 90: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

óü®Ã±¦Í¢®¹¨Ç±Èµ¢®°¯ ¶ ¼¢±Èµ¢®¹³²®Å¯È®¹³²×¢ª­±È³ ½ ¯È®Å³²×T;ÌÂè«®°ÍᲪ«À�Í¢®°Ôν|±È¨­èÕ®ø±²¶ Ï¢×�±ø½�¸¢½Á¾ºÏx®°¯ ¶ÁÍ�±²µ¢®´ÔÁ¶Î½ ªÁ¶Á¼¢¾¿®°®Ã±È¨­Í»Ô9�êµ ½ Í¢Í¢¶ÕÍi® ³ÂÒµ»½Áª­ª«®°Í¢ÔÕ® ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾¿¨«Â¹½ ª«ª­ÀÕå½� ¨«¯È³�±e�¦±Èµ¢®°À̶ÕÍ¢ª«Àº¯È×¢ª«® ¶Õ×�±�¸�®¹Â°¶�¸�¨­Í»Ô ¼�¶Õ¯´³²¶Á¾¿®ÖÂö�¸�®¹³ÖÛ ½ Í»¸Ì±²µ¢®�Âö�¸�®Ó³�½ ¯È®�Í¢¶Á±Ï»½Á¯�±È¨«Â°×¢ª«½Á¯²ª«ÀºÍ¢¨«Â°®ÓÝÃå«�¢×¢¯²±²µ¢®¹¯²¾¿¶Õ¯²®}zÁ±Èµ¢®°Àî¶ÕÍ¢ª­Àî¯È×¢ª«®�¶Õ×�±�¸¢®¹Âö�¸�¨«Í¢Ô ±²µ¢®Ó³�®ÖÂö�¸�®Ó³Ë·tµ»®°Í̱ȵ¢®©ÍÎ×»¾ ¬x®°¯�¶ ¼�®¹¯²¯È¶Á¯Ò³¨Ð³t¾ ×»Âҵ﾿¶Á¯È®©±²µ»½ÁÍí±Èµ¢®�¸�¨Ð³ð±Ò½ Í»Â°®�¶ ¼é±²µ¢®�°¶ê¸¢®Áå({鶿ÔÁ®Ã±�½î³²®°Í»³²®Ö¶ ¼ ±²µ¢®�Ïx¶Õ³²¨­±²¨«èÁ®Ö¯²®Ó³�×»ªÇ±Ò³�¨­ÍÚÂö�¸�¨«Í¢Ô¿±Èµ¢®°¶Õ¯²À}z·´®Ö³²µ¢¶Õ×¢ª«¸ïª«¶ê¶ÁÑ̽|±�³²¶Á¾¿®Ö¶ ¼ ±²µ»®©¾¿¶Õ¯²®Ö¯È®¹½Á³²¶ÁÍ ½ ¬¢ª«®©¸¢®¹Âö�¸�¨«Í¢Ô¿Ï¢¯È¶Á¬¢ª«®°¾î³¹å

äÉ{�!�O\hP�·!�m é {ƹ { Z h?¹ sG� u×Néy3h(m é {��ßO{�µ¢®�¾î½ ¨«Íﯲ®Ó³ð±È¯²¨ÐÂæ±È¨­¶ÕÍ»³´±²µ»½ ±�½ ª«ª­¶|· ¼�¶Á¯�½ ª«ÔÁ¶Õ¯²¨­±²µ»¾º¨Ð ¯²®Ó³�×¢ª­±È³t½Á¯²®©±Èµ¢®Ö¼�¶Áª«ª­¶|·t¨«Í¢Ô �

ñ ¤ ®Ú³²µ¢¶Á×¢ªÐ¸ ¶ÁÍ¢ª«À�±²¯ÈÀã±È¶�¸�®¹Â°¶ê¸¢®Æ³²¶Á¾¿®ïØD¦�®¹¸izË·´®°ª«ª*� ÑêÍ¢¶|·tÍ Â°¶�¸�®�Û�·tµ¢®¹¯²®Æ·´®ïÑêÍ¢¶|· ±²µ¢®Æ¾¿¨«Í¢¨­¾ ×¢¾¸�¨«³�±È½ÁÍ»Âî֮°±È å Ýæå

ñ ¤ ®Ö³�µ»¶Á×¢ªÐ¸îÏ¢ªÐ½Á°®�ª«¨­¾¿¨­±È³�¶ÁÍ̱²µ¢®©Íê×¢¾ ¬x®°¯�¶ ¼�®¹¯²¯È¶Á¯Ò³°zÕ½ Í ¸Ì¶ÁÍ»ª­À¿®H¦�Ïx®¹Âñ˱ȶºÂ°¶Á¯È¯²®ÓÂæ±Ë½ ÍÎ×»¾ ¬x®°¯�¶ ¼�®¹¯²¯È¶Á¯Ò³¨­ÍïÏ¢¯È¶ÁÏx¶Á¯²±²¨«¶ÁÍí±²¶º±²µ¢®�¸¢¨«³�±È½ÁÍ»ÂîÕå

{�µ¢®Ö¼�¶Õª­ª«¶|·t¨­Í»Ô ±Èµ¢¯²®¹®�¯Î×¢®¹³�±²¨«¶ÁÍ»³t½Á¯²®©Í»½ ±²×¢¯Ò½ ªi¯Î×¢®Ó³ð±È¨­¶ÕÍ»³t½ ª«¶ÁÍ¢Ô ±²µ»¨«³tª«¨«Í¢® �

kv�½!D�Km s u w½h wROй { Z h?¹ sG� u�æ �¢¶Õ¯t½�ØD¦�®Ó¸î¼v½ ¾¿¨«ª­Àɶ ¼ °¶�¸�®¹³@U�zêÔÁ¨«èÁ®¹Íí½ Íí¨­Í ¸�®H¦,åü½ÁÍ»¸ï½ èÕ®¹Âæ±È¶Á¯y ��Å � , Ø Í»¸Æ½ºÂ°¶�¸�®°·´¶Á¯Ò¸ Z ��� æ z ³�×»ÂÒµí±²µ ½|±� ïÛ Z ÷ y Ý +  íÛS� æ Ý ï � ¨­¼¦³²×»ÂҵƽºÂ°¶�¸�®°·´¶Á¯Ò¸Ì®?¦ê¨Ð³�±È³¹åÏ�¶Á±²®Å±²µ»½ ±é±Èµ¢®Ë׻ͻ¸�®°¯Èª«ÀΨ«Í¢Ô©½Á³È³�×¢¾¿Ï�±È¨­¶ÕÍ�¨«³é±Èµ»½|±| íÛS� æ Ý�¨«³ ÑêÍ¢¶|·tÍiz ¶Õ¯é°½ÁÍ�¬x®´Â°¶Á¾¿Ï¢×�±È®¹¸�®<;ÌÂè«®°ÍᲪ«ÀÁå½�¢×¢¯²±²µ¢®¹¯°z±²µ»®Ð¯Î×¢®¹³�±²¨«¶ÁÍ~¨«³ Ï ¶Î³�®Ó¸Ú³�¶É±²µ»½ ±�±Èµ¢® ½ÁÍ»³�·´®°¯ ¨«³ ע͢¨�¯Î×¢® ½ÁÍ»¸Ú³²¶Á¾¿®°µ¢¶|·à¯È®¹½Õ³�¶ÕÍ»½ ¬¢ª«®Ö±²¶í®H¦�Ïx®¹Âæ± ±²¶ïÂöÁ¾¿Ï¢×¢±²®bzÔÁ¨«èÁ®¹ÍÚ±²µ»®¿¸¢¨«³�±È½ÁÍ»Â ¼ü±Èµ¢®¿Âö�¸�®Áå x Âæ±È×»½ ª«ª­À ±²µ¢®F¯Î×¢®¹³�±²¨«¶ÁÍ ¯²®¹¾¿½Á¨­Í ³�¯È®¹½Õ³�¶ÕÍ»½ ¬¢ª«®�¼�¶Õ¯Ö³²ª«¨­ÔյձȪ­Àƪн ¯ÈÔÁ®¹¯�è|½ ª«×¢®¹³¶ ¼�±Èµ¢®Ì®°¯È¯È¶Á¯\zz³²½ À~×¢Ïþ±²¶Ú±Èµ¢®Ì¾¿¨«Í¢¨­¾ ×¢¾ ¸�¨«³�±È½ÁÍ»Âîɶ ¼´±²µ¢®É°¶�¸�®bzé±²µ¢¶Õ×¢ÔÁµ�¨«Íã³²×»ÂÒµ�°½Á³²®¹³�±²µ¢®É½ÁÍ»³²·Ë®¹¯�¨«³�Í»¶ª«¶ÁÍ¢ÔÕ®°¯øע͢¨�¯Î×¢®t¶Á¯Åעͻ½ ¾ ¬¢¨«ÔÁ×¢¶Õ×»³°å � ®¹¯²®t·´®�°½ÁͺÏx¶Õ³²®�±ð·´¶Ö³²ª«¨­ÔյձȪ­Àº¸�¨KÙx®¹¯²®¹ÍÕ±(¯Î×¢®Ó³ð±È¨­¶ÕÍ»³¹å ¤ ®�°½Áª­ªê±Èµ¢®tØ»¯Ò³�±ü¶ ¼±²µ»®¹³²®�±Èµ¢®2)²¬ ¶Õעͻ¸�®Ó¸É¸�¨Ð³ð±Ò½ Í»Â°® ¸�®ÓÂö�¸�¨«Í¢Ôª+ Ï¢¯È¶Á¬¢ª«®°¾BzÕ±²µ¢¶Õ×¢ÔÁµÉ±²µ¢¨Ð³ü±È®°¯È¾ ¨«³Ë¶ ¼Ü±È®°Íí×»³�®Ó¸¿±²¶¿½ ª«ª«×»¸�®�±È¶º³²ª«¨­ÔյձȪ­À¯È®°ªÐ½|±²®Ó¸�¯Î×¢®Ó³ð±È¨­¶ÕÍ»³�¨«Íí±Èµ¢®�ª«¨Ç±È®°¯Ò½|±²×»¯²®îÛv½ÁÍ»¸ï³�¶Õ¾º®°±²¨«¾¿®¹³�±Èµ¢¨«³�¨Ð³�±Èµ¢® M^2:0��FÌ ' V�MRG�M�Ka4b<�P�G°4 ' 2WV�Z:I[G}ÌH;=<?� Ýæå�Ðhxw��R¹ {7¹¨¹ésDO<�\!�� Z {�¹é{ Z hg¹ésD�éu�æ �¢¶Õ¯ ½�ØD¦�®¹¸�¼v½ ¾¿¨­ª«À�¶Á¼ Âö�¸�®Ó³¥U�z|½ÁÍ»¸�®¹¯²¯È¶Á¯é¼�עͻÂñ²¨«¶ÁÍ ì z|ÔÁ¨«èÁ®°Í½ Íɨ«Í»¸�®?¦�åü½ Í»¸í½ èÕ®¹Âñ²¶Á¯ y ��Å � , ½ Í»¸Ìػͻ¸ 032RT Âö�¸�®°·´¶Á¯Ò¸ Z ��� æ z¢³²×»Âҵɱ²µ»½ ±� ïÛ Z ÷ y Ý�m ì Û�åðÝŨǼ³�×»Âҵƽ¿Âö�¸�®¹·Ë¶Õ¯È¸É®H¦�¨«³�±È³¹å

{�µ¢®Ú¬x¶Á×¢Í ¸�®¹¸ ¸�¨Ð³ð±Ò½ Í»Â°® ¸�®¹Â°¶�¸�¨­Í»Ô�Ï¢¯²¶Õ¬¢ª«®°¾ ¨Ð³Ì³²¶Áª«è ½Á¬¢ª«®í¼�¶Õ¯É³²¶Á¾¿®ÚÂö�¸�®¹³º¼�¶Õ¯É³²¶Á¾¿®ï¼�עͻÂæ±È¨­¶ÕÍ»³ ì ÛvåðÝ ±²µ»½ ±½ ¯È®îÍ¢¶Á±²¨Ð°½ ®¹¬¢ª«À~ªÐ½ ¯ÈÔÁ®°¯Ö±Èµ»½ Í" ïÛS� æ Ý ï � åB{�µ¢¨Ð³�¨Ð³ ¸�¶ÕÍ¢®î¬êÀ ³²¶Áª«èê¨­Í¢Ô ½Ú³²ª«¨­ÔյձȪ­À µ»½ ¯Ò¸�®¹¯�Ï¢¯È¶Á¬¢ª«®°¾ °½ ª«ª«®¹¸ ±²µ»®)�ª«¨Ð³ð±[� ¸�®ÓÂö�¸�¨«Í¢Ôª+ãÏ¢¯²¶Õ¬¢ª«®°¾ ¸�®¹³ÈÂïȨ«¬ ®Ó¸¡¬ ®¹ª­¶|·�å ú ÍëÏ¢¯²¨«Í»Â°¨­Ï¢ª«®bz�·Ë® ·Ë¶Õ×¢ªÐ¸¡ª­¨«ÑÁ®~±²¶ ³�¶Õª­èÕ® ±²µ»¨«³ïÏ¢¯È¶Á¬¢ª«®°¾ ¼�¶Õ¯ì Û�åðÝ  ïÛ�� æ ÝHz¢¬¢×�± ·Ë®ÖÑêÍ¢¶|· ¶Á¼éÍ¢¶¿¨«Íα²®°¯È®¹³�±²¨«Í¢ÔîÂö�¸�®Ó³�·tµ¢®°¯È®�·´®Ö¹½ ÍƸ�¶º±²µ¢¨Ð³¹å

�ÅsGOÇ��¹é{ Z h?¹ésD�éu�æ �»¶Á¯Å½ÖØR¦ê®Ó¸º¼v½ ¾¿¨«ª­Àº¶ ¼�Âö�¸�®Ó³\U�zν Í»¸¿®¹¯²¯È¶Á¯¦¼�×¢Í Âæ±²¨«¶ÁÍ ì zÕÔÕ¨­èÕ®°Íî½ Íͻ¸�®?¦7妽 Í»¸½ èÕ®¹Âñ²¶Á¯ y ��Å � , ½ Í ¸ÉØ Í»¸Æ½ ª«¨Ð³ð±�¶Á¼ 03;J; °¶�¸�®°·´¶Á¯Ò¸¢³ Z ��� æ z»³²×»ÂÒµí±²µ»½ ±� íÛ Z ÷ y Ý�m ì Ûvå ÝÃ嬴¶ ±Èµ~±Èµ¢®î¬ ¶Õעͻ¸�®Ó¸ ¸¢¨«³�±È½ÁÍ»Âî̸�®ÓÂö�¸�¨«Í¢ÔïÏ¢¯²¶Õ¬¢ª«®°¾ ½ÁÍ»¸ ±Èµ¢®îª«¨«³�± ¸�®¹Â°¶�¸�¨­Í»ÔïÏ»¯²¶Õ¬¢ª­®¹¾ ½ ¯È®¿¯²®Ó½ ª«ª­ÀƼv½Á¾º¨«ª«¨­®Ó³Ö¶ ¼Ï¢¯È¶Á¬¢ª«®°¾î³ïÛ�®¹èÁ®°Í ¶Áͻ°®É·´®ÌØD¦�±Èµ¢®ï°¶�¸�®ÌÄzÝ�Ï ½ ¯Ò½ ¾¿®Ã±È¯²¨«ì°®Ó¸�¬êÀ ±Èµ¢®ï®°¯È¯²¶Õ¯�¼�עͻÂñ²¨«¶ÁÍ ì Ûzç ÝÃå {�µ¢®ÉªÐ½ ¯ÈÔÁ®¹¯�±Èµ¢¨«³¼�עͻÂñ²¨«¶ÁÍï¼�¶Á¯t·tµ»¨«ÂÒµÚ½ Íƽ ª«ÔÁ¶Õ¯²¨­±²µ»¾�·Ë¶Õ¯²Ñ�³°zα²µ¢®Ö¬x®Ã±�±È®°¯t±Èµ¢®�½ ª«ÔÁ¶Õ¯²¨­±²µ»¾ïåú Í ±²µ¢®î³²®°¯Î×¢®°ªø·´®º·t¨­ª«ªøÔÁ¨«èÁ®¿½ Í עͻ½ ¾ ¬¢¨«ÔÁ×¢¶Õ×»³Ö¸�®¹Â°¶ê¸¢¨­Í¢ÔÚ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾¤¼�¶Á¯��t®°®Ó¸���¶Áª«¶Á¾¿¶ÁÍ Âö�¸�®¹³¹åЬ´×�±ÖØ»¯Ò³�±·´®Ö³²¶Áª«èÁ®�½ºÏ¢¯È¶Á¬¢ª«®°¾�±²µ»½ ±�·´½Õ³Å±È¶ê¶¿±²¯È¨­èê¨Ð½ ª�±²¶¿®¹èÁ®°ÍïÏx¶Õ³²®Ö½Á¬ ¶|èÕ®Å�

ß � ��Í �

Page 91: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

Í%m�ñBö ü.Ñ¥��ÔYÿ�Ñ|õ#®î÷�õ@���,÷ùø?ö�ø ó�Ñ¥�3ÝÆ�HõQ�¬´®Ã¼�¶Õ¯²®º·Ë®º¾¿¶|èÁ®º¶ÁÍ~±²¶ï±²µ¢®¿¨Ð³²³²×¢®º¶ ¼´µ»½ Í»¸¢ª­¨«Í¢ÔƽÁÂæ±È×»½ ª <?INI[G�I�K zzª­®°±È³Ö¯È®¹³²¶Áª«èÁ® ¶ÕÍ¢®¿³�¨«¾¿Ï¢ª­®¿Ï¢¯È¶Á¬»ª­®¹¾ z ±²µ»½ ±¶ ¼¦¸�®¹Â°¶�¸�¨­Í»Ô ¼�¯È¶Á¾ ®°¯Ò½Á³²×¢¯È®¹³°zν ±�ª«®¹½Õ³ð±�¨«Íí±²µ¢®�¹½Á³²®©¶Á¼éª«¨­Í»®¹½ ¯�°¶�¸�®¹³¹å|{�µ¢®�®°¯Ò½Á³²×¢¯È® ¸�®ÓÂö�¸�¨«Í¢Ô¿Ï¢¯²¶Õ¬¢ª«®°¾�¨Ð³�±²µ»®¼�¶Áª«ª«¶|·t¨­Í¢Ô �

P�y3!�OÓwzy|{ªQ`¹ { Z h?¹ sG� u¨Néy3h(m é {W� æò7Á��éô »�� x ÍQÂ�ÃþÊ�ÔÕ®°Í¢®¹¯È½ ±²¶Õ¯ ¾î½|±È¯²¨=¦ËÄ ¼�¶Á¯î½~ª­¨«Í¢®¹½Á¯îÂö�¸�®�� ¶|èÁ®¹¯aÅ , ½ Í ¸ ½ èÕ®¹Âñ²¶Á¯ y �ÛJÅ , ç ÿ �b� Ýt�5z¢·tµ¢®¹¯²®���¨Ð³t½î³²Ï ®ÓÂèн ª�³²Àξ ¬ ¶Õª�¸�®°Í»¶ ±²¨«Í¢Ôî½ ÍÆ®¹¯È½Õ³�×¢¯È®Áå� Á » õ � x Û�¶Á¯�½Áª­ªÜÝ�Âö�¸�®¹·Ë¶Õ¯È¸ Z �ù� ³È½|±È¨«³�¼�Àê¨­Í¢Ô C æ 0 æ ¼�¶Á¯�½ ª«ªØå(�ÎÔ Ê5Öé³�× Âҵɱȵ»½|±l0 æ Ò �Õå

{�µ¢®�½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ¼�¶Õ¯ø±²µ»¨«³ËÏ»½ ¯²±ü¨Ð³(¯Î×¢¨­±²®�³²¨­¾¿Ï¢ª«®Áå«�ê×»Ï¢Ï ¶Î³�®<��³²Àê¾ ¬x¶ÁªÐ³ø¨­Í y ½Á¯²®t®¹¯È½Õ³�®Ó¸�åéçz®Ã± y �»¬ ®�±²µ¢® ÛvÊ�áb� Ý��¸�¨«¾¿®°Í»³²¨­¶ÕÍ»½ ªzèÁ®¹Âñ²¶Õ¯´¶Õ¬�±È½Á¨­Í»®¹¸ï¬êÀÉÏ¢¯È¶�áð®ÓÂæ±²¨«Í¢Ô y ¶ÕÍᲶ¿±²µ»®�Í¢¶ÁÍ^� ®°¯Ò½Á³²®¹¸í³�Àê¾ ¬ ¶Õª«³�½ÁÍ»¸ïª­®°±£Ä���¬x®Ö±²µ¢® ¾¿½ ±²¯È¨*¦¶Á¬¢±È½ ¨«Í¢®Ó¸~¬êÀ Ï¢¯È¶�áð®ÓÂæ±È¨­Í¢ÔùÄ ¶ÕÍᲶÚÂöժ­×¢¾¿Í»³�°¶Á¯È¯²®Ó³�Ïx¶ÁÍ ¸�¨­Í»Ô̱²¶ÆÍ¢¶ÕÍ^� ®°¯Ò½Á³²×¢¯²®Ó³°å ç�®Ã± � ¬ ®Ì½ÁÍÎÀ ³²¶Áª«×�±È¨­¶ÕÍ~±È¶� Ä�� �y ��½ Í»¸íª«®Ã± Z � Ä å|{�µ¢®°Í Z ¨Ð³t½î³�¶Õª­×�±È¨­¶ÕÍɱȶº±²µ¢®�®¹¯È½Õ³�×¢¯È®Ö¸�®¹Â°¶ê¸¢¨­Í¢Ô¿Ï¢¯È¶Á¬»ª­®¹¾ïå¤ µ¢®¹Í ¨Ð³©±²µ¢¨Ð³�³²¶Áª«×�±²¨«¶ÁÍ ×¢Í¢¨�¯Õ×»®�� ¤ ®î¹½ Íi® ±©¯È®¹½Áª­ª«ÀÚª«¶Î¶ÕÑ ½|±Ö±²µ»®ºª«¨«Í¢®¹½Á¯Ö³²À�³ð±È®°¾ ½ÁÍ»¸ ±È¯²ÀƱȶڽ ¯ÈÔÁ×¢® ¨Ç±�°½ÁÍi® ±µ»½ èÕ®í¾ ×¢ªÇ±È¨­Ï»ª­® ³²¶Áª«×�±²¨«¶ÁÍ ³°åä�ê¶Rz˷ˮƷt¨«ª­ª�×»³�®ï±Èµ¢®ÚÏ¢¯È¶ÁÏx®°¯²±²¨«®¹³º¶ ¼ ±²µ¢® °¶ê¸¢®ÁåQÏ�¶ ±È®Æ±²µ»½ ±¿±²µ»½ ±Ì¨Ç¼©±²µ¢®Ú°¶ê¸¢®µ»½Õ³ ¾¿¨«Í¢¨«¾ ×¢¾ ¸¢¨«³�±È½ÁÍ»Âî¿ùRz�±Èµ¢®°Íþùºá¡ß ®¹¯È½Õ³�×»¯²®Ó³�³�±²¨«ª­ªü½Áª­ª«¶|·à¼�¶Á¯Ö¯È®¹Âö|èÕ®°¯ÈÀɶÁ¼ü±²µ¢®î°¶ê¸¢®°·´¶Á¯Ò¸Øz�¨­Í�¼�¶Õ¯²¾î½ ±²¨«¶Áͱ²µ»®°¶Á¯È®Ã±È¨«Â¹½ ª«ª­À}zü³�¨«Í»Â°®ïùÉá ßí®°¯È¯²¶Õ¯È³ ½ ¯È®í¸�®°±²®ÓÂæ±È½Á¬¢ª«®Áå ú Í ¶Õ×¢¯¿Â°½Á³²®bz¦±Èµ¢¨Ð³¿¨­¾¿Ï¢ª«¨­®Ó³ ±²µ»½ ±º¨­¼<� + ùRzø±Èµ¢®°Í ±²µ»®³²¶Áª«×�±²¨«¶ÁÍ飼³�ע͢¨�¯Õ×»®Áåí èÕ®°Į́­¼z±Èµ¢®Ö³�¶Õª­×�±È¨­¶ÕÍɨг´Í¢¶ ±�ע͢¨�¯Î×¢®bz�·´®©¸¢¶ÁÍi® ±´µ ½ èÁ®�±È¶ ÔÕ¨­èÕ®�×¢Ïïµ¢¶ÕÏ ®Õå|��¨­Í»Â°®�±Èµ¢®�³�¶Õª­×¢±²¨«¶ÁÍ̱ȶ ±Èµ¢®©®°¯Ò½Á³²×¢¯²®?�¸�®ÓÂö�¸�¨«Í¢Ô Ï»¯²¶Õ¬¢ª­®¹¾à¨«³ ¶Á¬¢±È½ ¨«Í¢®Ó¸�¬êÀ�³�¶Õª­èê¨«Í¢Ô ³²¶Á¾¿®Ëª­¨«Í¢®¹½Á¯ø³�À�³�±²®°¾î³°z|·Ë®�°½ÁÍ ½ÁÂñ²×»½Áª­ª«À�®°Íê×¢¾¿®¹¯È½ ±²®Ë½Áª­ª�³²¶Áª«×�±²¨«¶ÁÍ ³±²¶ ±²µ¢®Ì®¹¯È½Õ³�×»¯²®Ì¸�®ÓÂö�¸�¨«Í¢ÔÚÏ¢¯È¶Á¬¢ª«®°¾Æå�{�µ¢®É³²®Ã± ¶ ¼�³�¶Õª­×¢±²¨«¶ÁÍ»³�±È½ ÑÕ®¿±²µ¢®É¼�¶Á¯È¾ ÿ Z a m � m �ËÅ â , �̼�¶Õ¯ ³²¶Á¾¿®Í¢¶ÕÍ^� Í»®°ÔÕ½ ±²¨«èÁ® ì z¢½ Í»¸ï³²¶Á¾¿®ÖèÁ®¹Âñ²¶Õ¯ Z ½ÁÍ»¸ï³�¶Õ¾º® ì ÃÉÊ ¾¿½ ±²¯È¨*¦� å«�¢×¢¯²±²µ»®°¯È¾º¶Õ¯²® ±²µ»®�èÁ®¹Âñ²¶Õ¯ Z ½ÁÍ»¸ï¾¿½ ±²¯È¨*¦ °½ÁÍ ¬x®î¼�¶Õעͻ¸ ®�;ÌÂè«®°ÍαȪ­ÀÕå�{�µê×»³Ö±Èµ¢®Ì®°¯Ò½Á³²×¢¯È®º¸¢®¹Âö�¸�¨«Í¢ÔÚÏ¢¯È¶Á¬»ª­®¹¾ ¼�¶Á¯ ª­¨«Í¢®¹½Á¯�Âö�¸�®Ó³�°½ÁÍ ¬x®É³²¶Áª«èÁ®Ó¸ ½Õ³³È½|±²¨Ð³�¼v½ÁÂæ±È¶Á¯È¨­ª«À̽Á³�¶ÕÍ¢®�ÂöÕ×¢ª«¸ïµ¢¶ÕÏ ®©¼�¶Õ¯!�Í%m�ñ,- � ö���� Ý�ø�ø7ÿ��Ðÿ�Ô ÷�õ@����÷ùø°ö�øù0��ÑI� õlõl÷�®?�����<���ù�Ðö ����÷�õQÔ

ç�®°±�×»³�¯È®¹Â°½Áª­ª�±Èµ¢®�עͻ½Á¾ ¬¢¨«ÔÁ×»¶Á×»³�¸�®ÓÂö�¸�¨«Í¢ÔîÏ¢¯È¶Á¬¢ª«®°¾ ¼�¶Õ¯@�t®°®Ó¸����ê¶Áª«¶Á¾¿¶ÁÍïÂö�¸�®Ó³°å

äÉ{ê{ô¹jQ�Sih é h:� hP�ß¹é{ Z h?¹ésD�éu�æò7Á��éô »�� Ê븢¨«³�±²¨«Í»Âæ±Ì®¹ª­®¹¾¿®°Íαȳ : - ÷ �?�?� ÷z: � �&Å , z]Þ - ÷ �°�?� ÷|Þ � �&Å , ½ Í»¸ Ï»½Á¯È½Á¾º®°±²®¹¯È³ªÂ ½ Í»¸ì m � ~ �/ å� Á » õ � x Ï ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª(i��ùÅ , Ô :RÖ ¶Á¼Å¸�®°ÔÕ¯²®¹®�ª­®Ó³²³�±²µ ½ Í�Â5z�³²×»ÂҵƱ²µ»½ ±�i Û�: æ ÝaÒ Þ æ ¼�¶Á¯©½|± ¾¿¶Î³ð± ìè ½Áª­×»®¹³�¶ ¼½å(�ÎÔ Ê5Ö å

{�µ¢® Ï¢¯²¶Õ¬¢ª«®°¾¤¨«³�¯Õ×»¨Ç±È® ½ÌÍ»¶ÁÍ^� ±²¯È¨­èê¨Ð½ ª�¶ÕÍ¢®Áå x ±�Ø»¯Ò³ð± ÔÁªÐ½ Í»Â°®�±²µ¢® ¬ ®Ó³ð±©·Ë® °½ Í ³²½ Àï½ ¬x¶Á×�±©¨Ç±©¨«³�±²µ»½ ± ¨­± ¨Ð³�¨«ÍÏq ½z ¨ å ®Áå$z»¨­¼¦³²×»Âҵƽ¿Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ª�®?¦�¨«³�±È³°zê±²µ¢®¹ÍƱ²µ¢¨Ð³�¼v½ÕÂæ±�°½ÁÍí¬x®�èÁ®¹¯²¨­Ø»®Ó¸É®<;î°¨­®¹ÍᲪ«Àbz V ' $�<?2 izå � ¶|·´®°èÕ®°¯�¨­±¨Ð³�Í¢¶Á±�®°èÕ®°Í °ª­®Ó½ ¯�±Èµ»½|±©¨Ç±©ª­¨«®¹³�¨­Í Âö���Ïq Yz ¨ å ®Áå�ÔÁ¨«èÁ®°Í ½Ì¯²®ÓÂî°¨«èÁ®Ó¸ÆèÁ®ÓÂæ±²¶Õ¯l�«z�¨Ð³�±Èµ¢®°¯È® ½Ì³²µ¢¶Á¯²±�Ï¢¯È¶ê¶ ¼¦±²µ ½|± Í»¶Ïx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª�i ¶Á¼ø¸¢®°ÔÁ¯È®°®Öª«®¹³È³t±Èµ»½ ÍdÂƳ²×»Âҵﱲµ»½ ±�iéÛG: æ Ý�Ò Þ æ ¼�¶Á¯�½ ±�¾¿¶Õ³�± ì è ½Áª­×»®¹³�¶Á¼|åÈå]óü®Ã±©½îÏ ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª±²¨«¾¿® ³²¶Áª«×�±²¨«¶ÁÍ Â¹½ ÍÚ¬x®�¼�¶Õעͻ¸Æ¼�¶Õ¯�±²µ»¨«³ Ï¢¯È¶Á¬¢ª«®°¾Æål{�µ¢¨Ð³�³²¶Áª«×�±²¨«¶ÁÍ ¸»½|±²®Ó³�¬ ½ÁÂÒṈ̃ȶ~ß\Í »b� ·tµ¢®¹Íd ¦®Ã±È®°¯Ò³�¶ÕÍ1Ô �ôõ°Ö å°½Á¾¿® ×¢Ïí·t¨Ç±Èµï½ÁÍí½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ®¹³È³�®¹ÍձȨ«½Áª­ª«Àî³�¶Õª­èꨫ͢Ô�±Èµ¢¨Ð³�Ï¢¯²¶Õ¬¢ª«®°¾ÆåY�ê±²¯È¨«Âñ²ª«Àɳ�Ïx®¹½ÁÑꨭ͢ÔîzÁ±Èµ¢®�³�¶Õª­×¢±²¨«¶ÁÍí½ÕÂæ±È×»½ ª«ª­À½ Ï»Ï¢ª­¨«®¹¸Æ¶ÕÍ¢ª«Àɱȶ̬¢¨«Í»½ ¯ÈÀ�¬@U � °¶�¸�®¹³¹å�{�µ¢® ¸�®ÓÂö�¸�¨«Í¢Ôî¼�¶Á¯�±²µ¢®��t®°®Ó¸����ê¶Áª«¶Á¾¿¶ÁÍÚ¹½Á³²®�¨«³�¼�¯²¶Õ¾ ±Èµ¢® ®?¦Î±È®°Í»³²¨«¶ÁͶ ¼é§©¶Õ¯²®¹Í»³�±²®°¨«ÍɽÁÍ»¸ [ ¨«®°¯Èª­®¹¯£Ô � � Öx·tµ¢¶ ÔÁ®¹Í¢®°¯Ò½ ª«¨­ì¹®¹¸ª¬@U � Âö�¸�®¹³Å±²¶ ±²µ¢®©Í¢¶ÕÍ^� ¬»¨­Í»½Á¯²À¿Â°½Õ³�®©½ Í»¸Ì¶Á¬»³²®°¯ÈèÁ®Ó¸º±²µ»½ ±

ß � ��Í¢ß

Page 92: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

±²µ»® ½ ª«ÔÁ¶Õ¯²¨­±²µ»¾ ÔÁ®¹Í¢®°¯Ò½ ª«¨«ì°®¹³°zÕ½ÁÍ»¸î½ ªÐ³²¶Ö±²µ»½ ±\�t®¹®¹¸����ê¶Áª«¶Á¾¿¶ÕͿ°¶�¸�®¹³´½ ¯È®�³�Ïx®¹Â°¨«½Áª ¹½Á³²®¹³ü¶Á¼i¬�U � Âö�¸�®Ó³�Û�¨«Íî±Èµ¢¨«³¨«Í»Âîӳð±È×¢¶Á×»³�·´¶Á¯ÈªÐ¸»Ýæå{�µ¢®F ¦®Ã±È®°¯Ò³�¶ÕÍ^� §©¶Õ¯²®¹Íαȳ�±²®°¨«Í^� [ ¨«®°¯Èª­®¹¯�½ ª«ÔÁ¶Á¯È¨­±²µ¢¾ ½ÁÂñ²×»½Áª­ª«ÀگȽÁÍ ¨«Í ±²¨«¾¿®§è¿ÛvÊj©ÓÝÃå çz½ ±²®¹¯£¬´®°¯Èª«®°Ñ|½ ¾¿Ï"Ô­ß?�3Öü½ÁÍ»¸­ ½Õ³²³²®°ÀdÔkõ3Í3Öz³�Ïx®°®Ó¸�®¹¸í±²µ»¨«³�½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ³²¶º±²µ»½ ±�¨Ç±�¯Ò½ Í鶴ÍÆè¿Û�Ê / Ý´±È¨­¾¿®Áå]UË×»¯²¯È®°ÍᲪ«Àî±Èµ¢®Ö¼v½Á³�±²®Ó³ð±tèÁ®¹¯È³²¨«¶ÁÍ»³´¯Èעͨ«Íî±²¨«¾¿®�è¿Û�Ê�Ïx¶Áª«À�ª­¶ÕÔüÊzݦ±È¨­¾¿®7Ô �7õ°Ö å ¤ ®�·t¨«ª­ª Í¢¶ ±´ÔÁ¨«èÁ®�±Èµ¢®¹³²®�¼v½Õ³ð±È®°¯Ë½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾î³?zÕ¬¢×�±�½ÁÂæ±È×»½ ª«ª«À ÔÁ¨«èÁ® ½�³�¨«¾¿Ï¢ª«®½ ª«ÔÁ¶Õ¯²¨­±²µ»¾�zίÈע͢͢¨«Í¢Ôº¨­ÍÆè¿Û�Êj© Ýø±È¨­¾¿®}z»¸�×¢® ±²¶ ¤ ®¹ª«Âҵ⦆ͻ¸�¬´®°¯Èª­®¹Ñ|½ ¾¿ÏdÔ­ß �b� zxß��\Ö å«{�µ¢®©½ÕÂæ±È×»½ ª�®H¦�Ïx¶Õ³²¨Ç±È¨­¶ÕÍÌ·´®ÔÁ¨«èÁ®Ö¨Ð³´¼�¯²¶Õ¾×Ô ¡ �\ÖËÛ ³�®¹®�½ ªÐ³�¶BÔ­ß � �Dz x Ï¢Ïx®°Í ¸�¨*¦ x Ö�Ýæå

�ont�SÜ���� fÆ�¢�¢�ü�{�|�ð�t�5³ �¢�t¸@ÿÙh��Å� £l¸��eµ �t³ø�

{�µ¢®ïÂïÈ×^¦ ¶Á¼t±²µ¢®ï¸�®¹Â°¶�¸�¨­Í»Ô~½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾ ¨Ð³ ½ Í ¶Á¬^áð®ÓÂæ± Â¹½ ª«ª­®Ó¸ ±²µ¢®í®°¯È¯²¶Õ¯t� ª­¶�¹½|±²¨«Í¢ÔÆÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª å ¤ ®ï¸�®Ãػͻ®±²µ»¨«³tÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª�¬x®°ª«¶|·�å ¤ ®�·�½ ¯ÈÍɱȵ¢®Ö¯²®Ó½Á¸�®¹¯�±²µ»½ ±°z¢½ ±�ª­®Ó½Á³�±´¼�¯È¶Á¾ ¨Ç±Ò³�¸�®ÃØ Í¢¨Ç±È¨­¶ÕÍiz�±Èµ¢¨«³�Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ª�¨Ð³�Í¢¶Á±Í¢®ÓÂȳȽ ¯È¨­ª«À½Õ³�¨«®°¯´±²¶ºØ»Í ¸É±Èµ»½ Íí±²µ»®�³�¶Õª­×�±È¨­¶ÕÍÉÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª�izå � ¶|·Ë®¹èÁ®¹¯Ë¨­±È³�Ï¢¯È¶ÁÏx®°¯²±²¨«®¹³�®¹Í»¸í×¢ÏƵ¢®°ª«Ï¢¨«Í¢Ô¿×»³°å�ï{���� s��¹s�h�� � Ñ � ��Æ�P�y y3h y é h Z !T�ÓsG� u¨Neh é � �·h:�ãsv! é É !Õ' $3<H2"0à$3<�PH>�G3I � 0�2:4�0�I[<�P ' <�$3<�4�$�<�P?>�G�I y >JCR03> ' Kc ' >�C ' 210,4 ' KN>�0325P]<7G�Elì«E�I[G3�.K?G3�ª<�ZRG3;*T32:G3� ' 03; i GtE�4b<�VbI[<�<a;$<NK�K�>JCR032 Â:X 0£ZRG3;UT325G3� ' 03;�: Û�:�Ý ' KÐP�0�;J;=<�4�0�2®°¯È¯È¶Á¯[� ª«¶�°½|±È¨­Í»Ô Ïx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª ' E ' >«CD03K�4}<�V�I[<�<�ì�03254ªK?03> ' Kn\e<HK�: Û�: æ Ý � ' E i Û�: æ Ý�Ò Þ æ @Ï�¶Á±²®�±²µ»½ ±�³²×»Âҵɽ�Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª�½ ª«·´½ À�³ü¸¢¶Î®Ó³Å®?¦�¨«³�± � �ꨫ¾¿Ï¢ª­Àº±Ò½ ÑÁ®©½ ³²®Ã±#¿��&Ô Ê5Öx±²µ ½|±´Â°¶ÁÍαȽÁ¨­Í ³Ë½Áª­ª»±²µ¢®©®°¯È¯²¶Õ¯ª«¶ê¹½|±È¨­¶ÕÍ»³t½ Í»¸ï³È½|±²¨Ð³�Ø»®¹³�� ¿Ð� ì ½ Í ¸íª«®Ã± : Û�:xÝ .L æ ò Û�:Éá¨: æ ÝÃåÏ�®?¦ê±°z�·´® ¸�®°Ø»Í¢®©¶ÁÍ¢®©¾¿¶Á¯È®�Ïx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª�zÕ±²µ ½|±�¨«³�½ ªÐ³²¶ ½Á³Ëµ»½Á¯È¸¿±È¶ Ø Í»¸É½Õ³bi·z�¶Á¯ : å|{�µ¢¨«³´¨Ð³ü±Èµ¢®ÖÏ ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª� ÛG:xÝ �^Z]\ iéÛG:xÝ¥ç : ÛG:xÝæå ¤ µ»¨­ª«®�®¹½ÕÂҵƶ ¼¦±²µ¢®Ó³�® Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ªÐ³ : z@i~½ÁÍ»¸ � ¨«³�µ»½ ¯Ò¸í±²¶îØ»Í ¸Øz»±È¶ÁÔծñ²µ»®°¯t±Èµ¢®°Àƽ ¯È®®¹½Õ³�¨«®°¯´±È¶¿Ø»Í»¸1�«¬´®°ª«¶|· ·´®Öª­¨Ð³�±�³�¶Õ¾º®ÖÏ¢¯È¶ÁÏx®°¯²±²¨«®¹³´¶Á¼é±Èµ¢®Ö±²¯È¨­Ï»ª­®�¶Á¼éÏx¶Áª«ÀÎÍ»¾º¨Ð½ ªÐ³§iLz : ½ÁÍ»¸ � å

: Û�: æ Ý � ¨­¼RÞ æ Ò iéÛG: æ Ý�½ Í»¸ë¸�®°Ô{�»Û : Ý ì� Û�:�Ý iéÛ�:�Ý : ÛG:xÝt½ÁÍ»¸ ¸¢®°Ô{�»Û � Ý +  a ìÚ:å«�ÎÔ Ê5Ö � Û�: æ Ý iéÛG: æ Ý : Û�: æ Ý Þ æ : Û�: æ Ý�� �� Ûðß � å­ß Ý

{�µ¢®�ªÐ½Á³�±Ë®\¯Î×»½|±È¨­¶ÕÍ¿½Á¬ ¶|èÕ®�¾¿¨­Ôյαů²®\¯Î×¢¨­¯È®�³²¶Á¾¿®�®H¦�Ï¢ªÐ½ Í ½|±²¨«¶ÁÍzå½Ï�¶ ±²®�±²µ»½ ±Ë¨­¼ : Û�: æ Ý � zÁ±²µ¢®¹Í�iéÛG: æ Ý : ÛG: æ Ý Þ æ : Û�: æ Ý � å ¤ µ¢®¹Í : Û�: æ Ý�Ò � z�·´®ÖÑêÍ¢¶|·4i Û�: æ Ý Þ æ ½ Í»¸Æ³²¶¿·Ë®�³�±²¨«ª­ª�µ ½ èÁ®#iéÛ�: æ Ý : Û�: æ Ý Þ æ : Û�: æ ÝæåÏ�¶|· µ¢¶|· ¸�¶~·Ë®Éػͻ¸ã½ÁÍÎÀ ¶ ¼t±Èµ¢®í½Á¬ ¶|èÕ®���{é×¢¯ÈÍ»³�¶Õ×�±°z¦¨­¼�·Ë®�áð× ³ð±¿¨­ÔÕÍ¢¶Á¯È®Ì½ ª«ªÅ¯È®Ã¼�®¹¯²®¹Í»Âîӳ�±È¶�i ¨«Í í ¯Î×»½��±²¨«¶ÁÍ Ûðß � å­ß Ý�½ÁÍ»¸Fáð×»³�±©ª«¶ê¶ÁÑï¼�¶Á¯ : ½ÁÍ»¸ � ³È½|±È¨«³�¼�Àꨭ͢Ôɱ²µ¢® ¯²®¹¾î½ ¨«Í¢¨­Í»ÔíÂöÕÍ»¸�¨­±²¨«¶ÁÍ»³ºÛv½ÁÍ»¸Æ±Èµ¢¨«³Ö³²×T;ÌÂîӳ�±È¶ÉÏ¢¨«Í±²µ»®°¾ ¸¢¶|·tÍí®Ó³²³²®°Íα²¨Ð½ ª«ª«ÀÌע͢¨�¯Î×¢®°ª«À¢Ý_� ¤ ®�¸�®¹³ÈÂïȨ­¬x®©±²µ¢¨Ð³tÏ¢¯È®¹Â°¨«³²®°ª«ÀÌÍ¢®?¦ê±¹å�ont�SÜ���± (�´�� Ý �z���î´w���þ���»�ð�gþ·³|µ�h.³ø�zÿü�ü�»�ð�^´�µ¤ ® ³ð±Ò½ ¯²±t¬ÎÀï¸�®¹³ÈÂïȨ«¬¢¨­Í»Ô¿±²µ¢®�¾î½3áð¶Õ¯�³ð±È®°Ï»³�¨­ÍƱȵ¢® ¤ ®¹ª«ÂÒµD��¬´®°¯Èª«®°Ñ|½ ¾¿ÏÚ½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾Æå x Ï»¯²¨«¶Á¯È¨�z�¨­±�¾î½ ÀÌÍ¢¶Á±�¬x®Âê«®¹½Á¯�½Á³Ë±²¶î·tµêÀî±Èµ¢¨Ð³�½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾ ¨«³�®¹¨Ç±Èµ¢®°¯�°¶Á¯È¯²®ÓÂæ±\zζկ�®�;ÌÂè«®°Íα¹å ¤ ®�·t¨«ª­ªz½Á¯²ÔÕ×¢®©±²µ¢¨Ð³�ªÐ½|±²®¹¯¹å

� { é Z � Q,�º{Îy é {7åD!D�#Nº¶ é u:h y sG� � �ÛæÄ sn�x{ô��æ Êø÷]Â�÷ ì m � ~ �/ ½ÁÍ»¸íÊ~Ï»½Á¨­¯Ò³ ÿ ÛG: æ � Þ æ Ý�� �æKJ - ·t¨Ç±Èµà: æ ® ³t¸�¨Ð³ð±È¨­Í Âæ±¹å

ß � ��Í �

Page 93: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

S?�¹{7N ��æ � ¨­Í ¸íÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³ � ½ÁÍ»¸ : ³È½|±È¨«³�¼�Àê¨­Í»Ô ±Èµ¢®Ö¼�¶Áª«ª«¶|·t¨­Í¢Ôîz�¨Ç¼ ±²µ»®°ÀÌ®?¦ê¨Ð³�± �¸¢®°Ô � Û : Ý ì¸¢®°Ô{�»Û � Ý +  a ìÚ5å«�ÎÔ Ê5Ö � Û�: æ Ý Þ æ : Û�: æ Ý � �� Ûðß � å � Ý

S?�¹{7N���æ ¢ ×�±ÈÏ¢×�± � ÛG:xÝ ï : Û�:�ÝæåP$� Z sv{ô� Z �¤ ®�Ø»¯Ò³ð±ËÍ¢¶ ±È®�±²µ ½|±Å±Èµ¢® ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ½Á¬ ¶|èÕ®�°½ÁÍî¬ ® ¨­¾¿Ï¢ª«®°¾¿®¹ÍձȮ¹¸¿±È¶ ¯È×¢ÍÍÌÏ ¶Õª­ÀêÍ¢¶Õ¾¿¨«½ÁªéÛDè¿ÛvÊ © ݲÝø±È¨­¾¿®ÕåY{�µ»®³²®¹ÂöÕÍ»¸Ú³�±²®°Ï ¨«³�¶Á¬êèꨭ¶Õ×»³°zx½ÁÍ»¸ ½ ª«ªz·´® Í»®°®¹¸Ú±²¶í½Á¯²ÔÕ×¢®�±Èµ¢¨«³�¼�¶Á¯ ¨«³�±²µ»® Ø»¯Ò³�±©³�±²®°Ïzå � ¶|·´®°èÕ®°¯t±Èµ¢®�Ø ¯È³�±©³�±²®¹Ï ¨«³®¹³È³²®°Íα²¨Ð½ ª«ª­ÀFáð× ³ð± ³²¶Áª«èꨭ͢Ôï½ïª­¨«Í¢®¹½Á¯�³�À�³�±²®°¾Æåª�êÏx®¹Âè­Ø ¹½ ª«ª­À}z�·Ë®¿Í¢®¹®¹¸~±²¶ïػͻ¸ Âöê®<;î°¨­®¹Íαȳ (�� E ÷ �?�?� ÷ � �Nu â ~Ø- *½ Í ¸ ( : E ÷ �?�°� ÷ : â * ³²×»ÂÒµí±²µ»½ ±t¼�¶Á¯�½ ª«ªiå�z

�Nu â ~i-^M J E

� M : M æ Þ æ â^M J E : M : M æÏ�¶Á±²®�±Èµ»½|±ø¼�¶Õ¯ø®°èÁ®¹¯²À�å�zÁ±²µ¢®�°¶ÁÍ»³�±²¯Ò½ ¨«Íαø½Á¬ ¶|èծ˨г5áð×»³�±Å½©ª­¨«Í¢®Ó½ ¯üÂöÕÍ»³�±²¯Ò½ ¨«ÍÕ±ø¨«Íº±²µ¢®tעͻÑÎÍ»¶|·tÍ»³°å|�ê¶�³²¶Áª«èΨ«Í¢Ô©±²µ»®³²Àê³�±²®¹¾ ½Á¬ ¶|èÕ®bz3áð×»³�± ½Á¾º¶Õ×¢Íαȳ�±È¶É³²¶Áª«èΨ«Í¢Ôª«¨­Í¢®Ó½ ¯�³²À�³ð±È®°¾ÆåÕ{�µ¢®�¶ÁÍ»ª­Àï°½|±ÒÂҵƨ«³�±Èµ»½|± ·Ë®�Í»®°®¹¸ : â Ò � ½ÁÍ»¸±²µ»¨«³�¨«³�Í¢¶ ± ½¿ª«¨«Í¢®¹½Á¯ ÂöÕÍ»³�±²¯Ò½ ¨«ÍÕ±Óåe¬´×�±�Í»¶ ±²¨ÐÂî ·Ë® ¹½ ÍÚ½ÁÂñ²×»½Áª­ª«À̼�¶Õ¯È°® : â ß ³²¨­Í Âî�¶ ±Èµ¢®°¯È·t¨Ð³�®�·´® °½ÁÍ7áð×»³ð±¸�¨«èꨫ¸�®©½ ª«ªx°¶ê®�;ÌÂè«®°ÍαȳˬêÀ : â ±²¶ Ôծñ�½ Í̽ ª­±²®¹¯²Í ½|±²®©³�¶Õª­×¢±²¨«¶ÁÍî·tµ¢¨ÐÂҵɳȽ|±²¨Ð³�Ø»®¹³ü±²µ¢®©¯²®\¯Î×¢¨­¯È®°¾¿®¹ÍÕ±Ò³°å|�ê¶îzÁØ»Í ¸�¨­Í»Ô½¿³�¶Õª­×¢±²¨«¶ÁÍí±²¶,�αȮ°Ïþßnáð×»³ð±�½Á¾¿¶Á×¢Íαȳ´±È¶Ì³�¶Õª­èꨫ͢Կ½ ª«¨«Í¢®¹½Á¯�³�À�³�±²®°¾ ½ Í»¸ïµ¢®¹Í»Âî�¹½ Íï¬ ®�¸�¶ÕÍ¢®Ö®�;ÌÂè«®°ÍαȪ­ÀÕå

è h»y y|{ Z �i�é{ôOiOÏ�®?¦ê±Ö·´®¿½ ¯ÈÔÁ×¢® ±²µ¢®îÂöկ²¯È®¹Âñ²Í¢®Ó³²³¹å��¢¶Õ¯ ±Èµ¢¨Ð³ Ï ½ ¯²±°z�½Á³È³²×¢¾¿®Di ¨«³�½íÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áªé¶Á¼´¸�®¹ÔÁ¯È®°® + ÂÚ±²µ»½ ±�½ ÔÁ¯È®°®Ó³·t¨­±²µº±²µ¢®�ÔÁ¨«èÁ®°Í¿³²®Ã±ü¶ ¼�Ïx¶Á¨«ÍÕ±Ò³ø½|±Å½Áª­ª¢¬»×�± ì Ïx¶Á¨«Íαȳ¹å ú Í̳²×»ÂÒµ¿½�°½Õ³�®�·´®´·t¨«ª«ª»³�µ»¶|·ã±²µ ½|±Å½ÖÏ»½Á¨­¯ø¶Á¼xÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³� ½ Í ¸ : ³²½ ±²¨Ð³ð¼�Àꨫ͢ÔÉÛ�ß � å � Ýü¸�¶�®H¦�¨Ð³ð±Óå � ¶|·´®°èÁ®¹¯ü·´®�·t¨­ª«ªxÍ¢¶ ±Å¬x® ½Á¬¢ª«®t±²¶ºÂêн ¨«¾ ±Èµ»½|±Ë±²µ¢®¹¯²®�¨Ð³´½�ע͢¨�¯Î×¢®�³²×»Âҵϻ½Á¨­¯Óå ú Í ³ð±È®¹½Á¸¿·´®�·´®�·t¨«ª­ªx³�µ¢¶|· ±Èµ»½|± 0�2RT Ï»½Á¨­¯Ë¶ ¼�Ïx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª«³Å³²½ ±²¨Ð³ð¼�Àꨫ͢ÔÉÛ�¯È®Ã¼�ª ß � � ®\¯ÎÍ � ±ð·´¶ÎÝ µ ½ èÁ®�±²µ»® ³È½ ¾¿®¯Ò½|±²¨«¶ÚÛv½ÁÍ»¸Ì±Èµ¢¨Ð³t¯È½ ±²¨«¶¿®°¯Î×»½ ªÐ³§ixÝÃåèÐé !¢s�� � Ñ �J� A5CD<?I[<�< )}' K�>�K,0�ZD0 ' I�G�E�ZDG�;UT32:G�� ' 0�; K3: 032:4 � K?0�> ' K�E�T ' 2WV A ì�� @ í C c ' >JC >�CD<�Z:I[G�ZD<?IN>STd>�CD03>� ÛG:xÝ ï : Û�:�Ý iéÛ�:�Ý @gÖy3hih:j ¤ ®qáð×»³�±©±È½ ÑÕ® : ±È¶É¬x®º½ÁÍ ®°¯È¯È¶Á¯[� ª«¶�°½|±È¨­Í»ÔºÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªé¼�¶Á¯#i ½ÁÍ»¸Æ±²µ»® ÔÕ¨­èÕ®°Í~³²®Ã±©¶ ¼üÏx¶Á¨«ÍÕ±Ò³?z�½ÁÍ»¸ª«®Ã± � ÛG:xÝ iéÛ�:�Ý : ÛG:xÝÃåe{�µ¢®¹Í � ½ Í ¸ : ³È½|±È¨«³�¼�Àɽ ª«ª�±²µ»®�¯²®\¯Õ×»¨­¯È®°¾¿®°Íαҳ°å

¤ ® Í¢¶|·à¾¿¶|èÁ®�±²¶í±²µ¢® ¾º¶Õ¯²® ¨­ÍαȮ°¯È®¹³�±²¨«Í¢ÔÉÂêн ¨«¾Æå£Ï�¶ ±È®�±²µ ½|±Ö¨Ç±�³�×�;î°®¹³�±²¶ï½ ¯ÈÔÁ×¢®�±Èµ»½|± � ï : C� � ï : �é¼�¶Õ¯½ ÍêÀîÏ»½Á¨­¯´¶ ¼¦³�¶Õª­×¢±²¨«¶ÁÍ»³Å±²¶ÆÛðß � å � Ý˳�¨«Í»Âî ±²µ»®Ö°ª«½Á¨­¾�½Á¬ ¶|èÕ® ¹½ Í̱ȵ¢®°Íï¬x®©× ³�®Ó¸î±²¶î³²®°® ±²µ»½ ±Ë±Èµ¢¨Ð³�¯È½ ±²¨«¶ ¾ × ³ð±t¬x®izåèÐé !¢s�� � Ñ � 6 ��2îTÐK?G�;UM^> ' G�2DK Û � ÷ : Ý 03254 Û � �v÷ : �ÜÝ >�G A ìs� @ í C K?03> ' K�E�T� ÛG:xÝ: ÛG:xÝ � � Û�:xÝ: � Û�:xÝG3Ia<�ã?M ' $�0�;=<?2R>S;UT � ÛG:xÝ : � ÛG:xÝ "� � Û�:�Ý : ÛG:xÝ @

ß � ��Í ¡

Page 94: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

gÖy3hih:j Ï�¶ ±²®©±Èµ»½|±�±²µ»®Ö¸¢®°ÔÁ¯È®°®Ó³Å¶Á¼�±²µ»®©Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³ � Û�:�Ý : � Û�:�Ý´½ Í»¸ � � Û�:xÝ : Û�:�Ý´¨«³t½ ±´¾¿¶Î³ð±lÂ�áãß aÎ� ì å�¢×»¯�±Èµ¢®°¯È¾¿¶Á¯È®bzê¼�¯È¶Á¾ Û�ß � å � ÝË·´®Öµ»½ èÁ®}zÕ¼�¶Õ¯t®°èÕ®°¯ÈÀ�å«�1Ô Ê5Ö�zÞ æ : ÛG: æ Ý "� Û�: æ Ý ½ Í»¸ � � ÛG: æ Ý Þ æ : � Û�: æ Ý �

­Ú×¢ª­±²¨«Ï¢ª«Àꨭ͢Կ±Èµ¢®Ö±ð·´¶º·´®ÖÔÁ®°± � Þ æ : Û�: æ Ý � � Û�: æ Ý Þ æ : � ÛG: æ Ý � ÛG: æ Ý �Ï�¶|·ë·Ë®�°ª«½Á¨­¾ ±²µ»½ ±�½ÁÂæ±È×»½ ª«ª«À : Û�: æ Ý � � Û�: æ Ý : � Û�: æ Ý � Û�: æ Ý �{�µ¢¨Ð³�®°¯Î×»½Áª­¨­±ðÀ ¨Ð³�¶Á¬êèꨫ¶Á×»³Ö¨­¼�Þ æ Ò � zé¬êÀ °½ÁÍ»Â­ªÐ½|±È¨­¶ÕÍ�å�¬´×�±�·tµêÀ~¨Ð³�¨­±�±²¯È×¢®î¨«³�Þ æ � � ¤ ®¹ª­ªSz ¨­Íã³²×»ÂÒµþ½Â°½Õ³�®}zz·´®¿Í¢¶ ±È® Ûܼ�¯È¶Á¾ Û�ß � å � Ý ½ÁÔÕ½Á¨­Í Ý ±Èµ»½|± � Û�: æ Ý �� � Û�: æ Ý � ½ Í»¸þ³²¶ ½ ÔÕ½Á¨­Í ·Ë®îµ ½ èÁ® : Û�: æ Ý � � Û�: æ Ý : � Û�: æ Ý � Û�: æ Ý � å(Ï�¶|· ¨­¼ Ê 8  a � ì á ßbz¢±²µ¢®¹ÍÚ·Ë®�Ôծñt±²µ ½|±t±²µ»®�Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ªÐ³ � ç : � ½ Í ¸ : ç � � ½ÁÔÁ¯È®°®¶ÁÍ﾿¶Á¯È®ÖÏ ¶Õ¨­Íαȳt±²µ»½ÁÍɱȵ¢®°¨«¯�¸�®¹ÔÁ¯È®°®bz�½ÁÍ»¸ïµ¢®°Í»Â°®Ö±²µ¢®¹Àɽ ¯È®Ö¨«¸¢®°Íα²¨Ð°½Áª�z¢½Õ³t¸�®¹³²¨­¯È®¹¸�å

¤ ®�³�×¢¾¿¾î½ ¯È¨«ì°®Ö·t¨Ç±Èµï±²µ¢®Ö¼�¶Õª­ª«¶|·t¨­Í»Ô ±Èµ¢®°¶Õ¯²®¹¾ �

��� {�h»y|{�� � Ñ �$# A5CR< � { é Z � Q�� {Îy é {7åD!D�ßN¨! é u:h y sG� � � K?G3;©$3<NK�>JCR< kà�½!D��m¦svuxw½h wRO·äí{Î{ô¹bQ_SLh é hî�"h��¹ { Z h?¹ sG� u¨N y3h�m é {�� ' 2 è¿ÛvÊj©ÓÝ > ' �ª<°@x ³ü¾º®¹ÍᲨ«¶ÁÍ¢®Ó¸ ®Ó½ ¯Èª­¨«®°¯\z ±²µ»¨«³ø¨Ð³¦Í¢¶Á±ø±²µ¢®�¼v½Õ³ð±È®¹³�±üÏ ¶Î³²³²¨­¬»ª­®t½ ª«ÔÁ¶Õ¯²¨­±²µ»¾ ¼�¶Á¯ü³²¶Áª«èꨭ͢ԩ±Èµ¢®tעͻ½Á¾ ¬¢¨«ÔÁ×¢¶Õ×»³¦¸�®¹Â°¶�¸�¨­Í»ÔÏ¢¯È¶Á¬¢ª«®°¾Æå ú Íï¼v½ÁÂæ±\z ®¹èÁ®¹Íí±Èµ¢® ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ¼�¯È¶Á¾ ÔÇß �b� Öé¨Ð³t¼v½Õ³ð±È®°¯�½ÁÍ»¸ï¯²×»Í»³t¨«ÍƱ²¨«¾º®�è¿Û�Ê / Ýæå ú ¼ø·Ë®�ª«¶ê¶ÁÑí½ ±�±²µ»®³�±²®°Ï ³t¶ ¼ ±²µ¢® ½ ª«ÔÁ¶Á¯È¨­±²µ¢¾�ÔÕ¨­èÕ®°ÍƵ¢®¹¯²®}z¢¶ÁÍ¢®ÖÍ¢¶Á±²®Ó³�±²µ»½ ± ½ ª«ª�±Èµ»½|±t±Èµ¢® ½ ª«ÔÁ¶Õ¯²¨­±²µ»¾�Í¢®°®Ó¸¢³�±È¶î¬ ® ½Á¬¢ª«®Ö±²¶î¨Ð³�³�¶Õª­èÕ®½�)�¯Ò½|±È¨­¶ÕÍ»½ ª�¼�׻ͻÂæ±È¨­¶ÕÍÚ¨­Íα²®¹¯²Ïx¶ÁªÐ½|±È¨­¶ÕÍ�+¿Ï¢¯È¶Á¬¢ª«®°¾¤½ Í»¸Æ½�)²Ï ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª�¸�¨­èê¨Ð³�¨«¶ÁÍ(+¿Ï¢¯²¶Õ¬¢ª«®°¾ ®<;ÌÂè«®°ÍᲪ«ÀÁåÕ{z×»¯²Í»³¶Á×¢±´¬x¶ ±Èµï³�±²®¹Ï»³�°½ Íɬ ®�³²¶Áª«èÁ®¹¸Ì®�;ÌÂè«®°ÍᲪ«ÀbzꨫÍ�è¿ÛvÊ�Ï ¶Õª­À�ª«¶ÁÔüÊzÝűȨ­¾¿®Áå|�»¶Á¯´±²µ¢® ±È½Õ³�Ñî¶Á¼zÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áªx¸¢¨­èê¨Ð³�¨«¶ÁÍiz³²×»ÂÒµ ½Áͺ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ¸¢½|±È®¹³¦¬»½ÕÂÒÑ ±È¶��ꨭ®¹èÁ®¹ÑΨ«Í¢ÔFÔÇß � �°Ö å½{�µ»®Ë±È®H¦ê±ø¬êÀ x µ¢¶îz � ¶ÕÏx°¯²¶Á¼Ü±°z ½ÁÍ»¸ ¡ ª­ª«¾î½ ÍBÔ � z7U˵»½ÁÏ�±²®¹¯�3Ö˨«³ ½ Í�®H¦¢Â°®°ª«ª­®¹ÍÕ± ³²¶Á×»¯È°®¿¼�¶Á¯�¾î½|±È®°¯È¨«½Áªü¶ÁÍ ±Èµ¢¨«³º½ ª«ÔÁ¶Õ¯²¨­±²µ»¾ Ûv½ÁÍ»¸þ¶ ±Èµ¢®°¯�¼v½Õ³ð±º½ ª«ÔÁ¶Á¯È¨­±²µ¢¾î³©¼�¶Á¯ Ï ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª¾î½ Í¢¨«Ï¢×¢ªÐ½|±È¨­¶ÕÍ Ýæå½{�µ¢®ø±Ò½Á³²Ñ�¶ ¼�¯Ò½|±È¨­¶ÕÍ»½ ª|¼�׻ͻÂæ±È¨­¶ÕÍ�¨­Íα²®¹¯²Ïx¶ÁªÐ½|±È¨­¶ÕÍÖ¶ÁÍÖ±²µ»®ü¶ ±Èµ¢®°¯�µ ½ Í»¸Ö¯È®¹¸�× Âî¹³�±²¶�½*)Ò§�Un�l� ª­¨«ÑÁ®�+Âöվ¿Ï¢×�±È½ ±²¨«¶ÁÍizηtµ¢¨ÐÂҵ̨«Íî±²×¢¯ÈÍÌ·�½Á³Ë³�µ¢¶|·tÍ̱²¶�¬x® ®<;ÌÂè«®°ÍᲪ«ÀîÂöÁ¾¿Ï¢×¢±È½ ¬»ª­® ¨­Íî±Èµ¢® ß\Í7õ � ³°zÁ¬êÀF�¢ÂÒµ��¶ÁÍ¢µ ½ ÔÁ®ÐÔ Íôõ°Ö å­ ½Õ¸�µê×i® ³�µ»½Á³�±²¨«ª«Àï·t¯È¨­±�±²®¹Í Í¢¶Á±²®¹³.ÔÇßÕßÁßNÖø½ Í ¸�­Ú¨«ÂÒµ ½ ®°ªR�t¶Õ³²®°Íꬢª«×¢¾B® ³�¾¿¶Á¯È® ¹½ ¯È®Ã¼�×¢ªé·t¯²¨­±²®¹×¢Ï"Ô Í ¡ Ö Ø»ª«ªé¨«ÍÚ±²µ»®¸�®°±È½ ¨«ªÐ³�¶ ¼ ±²µ¢®�¯È®¹¸�× Âæ±²¨«¶ÁÍƽ Í ¸ï³²ÑÁ®°±ÈÂҵɱ²µ¢®�½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾Æå

ß � ��Í��

Page 95: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

« ¬®­°¯²±�³S´ h�h

Ç��� �=5ê·¶ é u:h y sG� � �ãs Zv¸ �¤�°y3h?¹ w Z �¹s�h��º�\h è hg¹ésD�éu ��� {�h»y � ¢©Âñ²¶Á¬x®°¯ � �Rz ���}� ß½�¾�¿�ÀPÁ�Â�¾�jwj

È <�P?>�M^I]<HI<Ä�Åù0}4°C^MÆ1îMR4}032 15P?I ' Ì�<ÇÄQÅd03>S> È <�Z ' 2RKNJ '{é¶ê¸»½ À̷ˮַt¨«ª­ª�±È½ ª«ÑɽÁ¬ ¶Õ×�± �ßÕå x ¬»³�±²¯Ò½ÁÂñ²¨«¶ÁÍﶠ¼z±Èµ¢®�� ®¹Âö�¸�¨«Í¢Ô x ª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ¼�¶Á¯@��®°®¹¸^���ê¶Õª­¶Õ¾¿¶ÁÍ�U˶�¸�®Ó³� ål��®ÓÂö�¸�¨«Í¢Ô�U˶Áͻ¹½|±²®¹Í»½|±È®¹¸ÆU˶�¸�®¹³�Û ³�Ïx®¹Â°¨ÇØ Â¹½ ª«ª­À}z�±²µ»®��¢¶Á¯ÈÍ¢®¹ÀàU˶�¸�®¹³ÒÝæå

ÍÐÍÐñ<Í ò�Ý�ÔgÒRÑ¥���\Ò|ø��Ðö��� � õlõl÷�®?�����������Ðö ¯ôõ@���,÷ùø?ö�ø ò ��ø��ÐÑ«øBÒ¥úÆ�

¢ ×¢¯�Ø»¯Ò³�±�ÔÁ¶Õ½Áªx±²¶�¸¢½ Àɨг�±È¶ºÔÕ¨­èÕ®�½¿èÁ®°¯ÈÀɽÁ¬»³ð±È¯È½ÕÂæ±�èꨭ®¹·ë¶Á¼é±Èµ¢® ¤ ®¹ª«ÂÒµD��¬´®°¯Èª«®°Ñ|½ ¾¿ÏƸ�®¹Â°¶ê¸¢¨­Í¢Ô̽Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ¼�¶Õ¯�t®¹®¹¸����ê¶Áª«¶Á¾¿¶ÕÍíÂö�¸�®Ó³°å«{�µ»¨«³t½Á¬»³ð±È¯È½ÕÂæ±È¨­¶ÕÍí·t¨«ª­ª�½Áª­ª«¶|· × ³´±²¶Ì³²®°®Ö¨Ç±Ò³tÔÁ®¹Í¢®°¯Ò½ ª«¨­±ðÀbz�½ Í»¸É±²µê×»³�½ Ï¢Ï¢ª«Ą̀­±t±²¶î¶Á±²µ¢®¹¯¼v½ ¾¿¨«ª­¨«®¹³¦¶Á¼ ®¹¯²¯È¶Á¯[� °¶Á¯È¯²®ÓÂæ±È¨­Í¢Ô�°¶�¸�®¹³¹å½{�µ»®�½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ·´®´¸�®Ó³²Â°¯²¨«¬x®´µ»®°¯È®´¨Ð³ ¼�¯È¶Á¾à±²µ»®t·Ë¶Õ¯²Ñ�³é¶ ¼: ¦®¹ª­ª«¨«Ñ ½Õ½ Í�Ô � » ÖSz¢��¶ ±²±²®¹¯�Ô » ßNÖSz ½ Í»¸���×»×¢¯È³²¾î½BÔ ¡}� Ö å�ü�ø�²�ø��� � ���z�w��q´�Å���(µ �(¸ ¡�z���t���[¸@ÿ�� �ض��ð����t®Ó°½ ª«ªt±Èµ¢®·�t®¹®¹¸����ê¶Áª«¶Á¾¿¶ÕÍ ¸¢®¹Âö�¸�¨«Í¢Ôã½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ¼�¯È¶Á¾ ª«½Õ³ð±Éª«®¹Âñ²×¢¯È®Áå � ®¹¯²®Ú·´® µ»½ èÕ®ÆÊย¨«³�±²¨«Í»Âæ±íÏ ¶Õ¨­Íαȳ: - ÷ �°�?� ÷|: � �,Å , ÔÕ¨­èÕ®°Íɨ«¾¿Ï¢ª«¨«Â°¨Ç±Èª­À}z¢½ Í»¸í·Ë®Ö½ ¯È®�®?¦�Ï¢ª­¨ÐÂè­±²ª«ÀÌÔÕ¨­èÕ®°Íí½Õ³´¨­Í¢Ï»×�±t®°ª«®°¾¿®°Íαȳ\Þ - ÷ �°�?� ÷|Þ � ��Å , å«{�µ»®¸�®ÓÂö�¸�¨«Í¢Ôî½ ª«ÔÁ¶Á¯È¨­±²µ¢¾ °¶ÁÍ»³²¨Ð³ð±Ò³Ë¶Á¼é±Èµ¢®Ö¼�¶Áª«ª«¶|·t¨­Í¢Ôº±ð·´¶º³�±²®¹Ï»³ �

ßÕå � Á » õ � ¦¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª«³#µ�Û�:�Ýt½ Í»¸ · ÛG:xÝt³²×»ÂÒµí±²µ»½ ± �ñ �¢¶Õ¯�½ ª«ªØå(�1Ô Ê5ÖSz�µ�Û�: æ Ý�Þ æ · Û�: æ ÝÃåñ � ®°ÔÁ¯È®°®Ö¶Á¼§µî¨Ð³�³²¾î½ ª«ªüÛv½|±�¾¿¶Î³ð± ì Ýæåñ � ®°ÔÁ¯È®°®Ö¶Á¼ · ¨«³t³²¾î½ ª«ªÅÛ�ª«®¹³È³´±²µ ½ Íù a ì ÝÃå

� å=� ��¡�¢Q��¡ � * o � s£�o � s

ßÁßH��Í}�

Page 96: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

�ü�ø�²�ø��± q#h��z���t³ø��q´�ê�îà��x�Dà��¢� �«ß�� �z�z�w��q´�Å���(µ �(¸�x �t���z�{�µ¢® ½Á¬ ¶|èծƽÁª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ½ Í ¸ ¨­±È³ÌÏ¢¯²¶ê¶Á¼©¶Á¼©Âöկ²¯È®¹Âñ²Í¢®Ó³²³º×»³²®¹¸ ±Èµ¢® Ï¢¯È¶ÁÏx®°¯²±²¨«®¹³¿¶Á¼��t®¹®¹¸����ê¶Õª­¶Õ¾º¶ÕÍ Â°¶ê¸¢®¹³î¨«Í³²®°èÁ®¹¯È½Áª�·´½ À�³¹å½¬´®°ª«¶|· ·´®Öª­¨Ð³�±t±²µ¢®�¸�¨KÙ�®°¯È®°Íα�½Á³²Ï ®ÓÂæ±Ò³´±²µ»½ ±�³�®¹®°¾ ³²Ï ®ÓÂè­Ø ©±²¶ �t®¹®¹¸����ê¶Õª­¶Õ¾º¶ÕÍï°¶�¸�®¹³¹åßÕå ¤ ®�×»³²®¹¸É±²µ»®Ö¼v½ÁÂæ±t±Èµ»½|±t±Èµ¢®�¨«Í»¸�¨ÐÂî¹³�¶Á¼é±Èµ¢®�Âö�¸�®¹·Ë¶Õ¯È¸»³©Ûv¨ å ®Áå$z�: - ÷ �?�?� ÷|: � Ý�½Á¯²® Ø»®¹ª«¸ï®°ª«®°¾¿®¹ÍÕ±Ò³°å� å ¤ ® ×»³�®Ó¸Æ±²µ»® ¼v½ÕÂæ±�±Èµ»½|± ±ð·Ë¶íª­¶|· ¸�®¹ÔÁ¯È®°®�Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³ ¹½ Í¢Í»¶ ± ½ÁÔÁ¯È®°®�¨«Í èÁ®¹¯²Àï¾î½ ÍêÀÆÏ¢ªÐ½ÁÂîӳ?z�³²®°èÁ®¹¯È½Áª±²¨«¾º®Ó³�Û�¨«ÍƱ²µ¢®�°¶ÁÍ»³�±²¯È×»Âñ²¨«¶ÁÍɶÁ¼é±Èµ¢®�Âö�¸�®}z¢½Á³�·´®°ª«ªz½Á³´±Èµ¢®�½ Í ½ ª«Àê³²¨Ð³Ë¶Á¼z±Èµ¢®�¸�®¹Â°¶�¸�¨­Í»Ô̽ ª«ÔÁ¶Á¯È¨­±²µ¢¾ÌÝæå

¡ å ¤ ®t×»³²®¹¸ ±Èµ¢®t¼v½ÁÂñø±²µ»½ ±Å¾ ×»ªÇ±È¨­Ï¢ª«¨Ð°½|±È¨­¶ÕÍ¿¶ ¼x±ð·Ë¶Öª«¶|· ¸�®¹ÔÁ¯È®°®�Ïx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª«³¦¨Ð³ü½Öª«¶|· ¸¢®°ÔÁ¯È®°®�Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª å� å ¤ ®�½Áª«³²¶î×»³²®¹¸í±²µ¢®�¼v½ÁÂæ±�±²µ»½ ±�עͻ¸�®¹¯t±²µ»®�¯²¨«ÔÁµÎ±�°¶ÁÍ»¸�¨­±²¨«¶ÁÍ ³?z�±Èµ¢®�¯Ò½|±È¨­¶¿¶ ¼¦±ð·´¶¿Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ªÐ³t¨Ð³�½îÏx¶Áª«ÀW�Í¢¶Á¾¿¨Ð½ ª å

Ï�¶Á± èÕ®°¯ÈÀɾÍêÀﶠ¼ø±²µ»®¹³²® ½ ¬x¶|èÁ®Ö¼v½ÕÂæ±Ò³�·´®°¯È®�¯È®¹½ ª«ª«ÀíÂïȨ­±²¨Ð°½ ªz±²¶É±²µ¢® Ï¢¯²¶ê¶Á¼Òz ±²µ»®°ÀÆ·Ë®¹¯²®Õáð× ³ð±©±²µ¢®º³�¨«¾¿Ï¢ª«®¹³�±·�½ Àþ±²¶þÔÁ®°±º±È¶ ±²µ¢®Ú®¹Í»¸�å �ê¶Á¾¿®Æ¶ ¼ ±²µ¢® ½Á¬ ¶|èÕ®íÏ»¯²¶ÕÏ ®¹¯�±È¨­®Ó³ïÛvª­¨«ÑÁ®�Û � Ý�Ý¿½Á¯²®Ðáð×»³�±î¼v½ÁÂñȳº±²µ ½|±Ìµ¢¶Õª«¸ ¼�¶Á¯Ì½ÁÍÎÀ®°¯È¯È¶Á¯[� °¶Á¯È¯²®ÓÂæ±²¨«Í¢ÔÌ°¶ê¸¢®Áå,¢�±²µ¢®¹¯È³°z�¨«Í Ï ½ ¯²±²¨ÐÂÃ×¢ªÐ½ ¯îÛ ¡ ÝNz ½ ¯È®º³²¶Á¾¿®°·tµ ½|±�³�Ïx®¹Â°¨«½Áª�zz¬¢×�± °½ÁÍ ³�±²¨«ª«ªø¬ ®Ì½Á¬»³ð±È¯È½ÕÂæ±È®¹¸·t¨­±²µÚ°½Á¯²®Õå

�ü�ø�²�ø��Ü Bà��ð�¢�ph �²���5³ �¢�ð�(¸ �(ß�¶Å�z�x���ü� �¢ Í¢®Æ¶ ¼©±²µ»® ÂïȨDZȨ«Â¹½ ªt¶ÁÏx®°¯Ò½|±È¨­¶ÕÍ»³º¨­Í ±Èµ¢® ¸�®¹Â°¶�¸�¨­Í»Ôþ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ¨Ð³º±²µ»½ ±Ì¶ ¼Ö¾ ×¢ª­±²¨«Ï¢ª«Àꨭ͢Ôþ±Èµ¢®Ú®°¯È¯È¶Á¯[� ª«¶�°½|±È¶Á¯Ïx¶Áª«ÀÎÍ»¶Á¾¿¨«½ÁªÁµ�ÛG:xÝ�·t¨Ç±ÈµÚ±²µ¢®º¾¿®¹³È³²½ÁÔÁ®�Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª(iéÛ�:�Ý©½ Í»¸ °¶ÁÍ»³²¨Ð¸�®°¯È¨­Í»Ô¿±²µ¢®º®°è|½ ª«×»½ ±²¨«¶ÁÍ»³�¶ ¼ü±Èµ¢® Ï¢¯È¶�¸�×»Âñ½|±�: - ÷ �?�?� ÷z: � å«{�µ»¨«³t¨Ð³�®¹³È³²®°Íα²¨Ð½ ª«ª­Àí½ºÂ°¶ê¶Á¯Ò¸�¨­Í ½|±²®¹·t¨«³²®©Ï¢¯²¶�¸�× Âæ±�¶ ¼ èÁ®ÓÂæ±²¶Õ¯È³°z�¸�®ÃØ Í¢®¹¸ï¬x®°ª«¶|·�å

�ï{���� s��¹s�h�� �x� � �ä% G3I w ÷ � ��Å � , X >�CD< ' IÐP�G°G�I[4 ' 2503>�<Hc ' K?<lZ:I]G°4�MRPH> X 4b<?2:G�>�<�4 wy¤�� X ' KqV ' $�<?2ÎÌ?Twy¤����( e -A¥}- ÷ �?�°� ÷Ne � ¥ � * �

ú ¼z±Èµ¢®�Âöê¶Á¯Ò¸�¨«Í»½|±È®°·t¨Ð³�® Ï¢¯È¶ê¸¢×»Âæ±�¨«³�½¿³�±²¯Ò½ Í¢ÔÕ®�¶ÁÏx®°¯Ò½|±È¨­¶ÕĮ́«Ííª«¨­Í»®¹½ ¯�½ ª«ÔÁ®¹¬¢¯Ò½DzÕ±²µ¢®¹Íɱȵ¢®©¼�¶Áª«ª­¶|·t¨«Í¢ÔºÏ¢¯²¶�¸�× Âæ±�¶ ¼³²®Ã±È³�¨Ð³t®¹èÁ®°ÍƳ�±²¯Ò½ Í¢ÔÕ®°¯\zά»×�±�¨«³t°¯²¨­±²¨Ð°½Áª�±²¶¿±Èµ¢®�·Ë¶Õ¯²Ñꨫ͢Ժ¶ ¼z±Èµ¢®��t®¹®¹¸����ê¶Áª«¶Á¾¿¶ÕÍï¸�®ÓÂö�¸�¨«Í¢Ôî½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾Æå

�ï{���� s��¹s�h�� �x� �J��% G3I Àt÷,� � Å � , >JCR< ' InZ5I[G\43MRP?> X 4}<H25G3>�<]4 À ¤ � ' K�V ' $�<?2�Ì?TÀ ¤ � àÿ wy¤�� � w �£À�÷ � �£�7� �¤ µêÀ ½Á¯²®Æ±Èµ¢®¹³²®Ú¶ÁÏx®°¯Ò½|±È¨­¶ÕÍ»³¿¨­ÍαȮ°¯È®¹³�±²¨«Í¢Ô@�Û{z¶�¾¿¶Á±²¨«è ½ ±²®Æ±Èµ¢®°¾Bztª«®Ã±Ì×»³Éª­¶ê¶ÁÑ ¬»½ÁÂÒÑ ½|±î±²µ»®·�q� ¸�®¹Â°¶�¸�¨­Í»Ô½ ª«ÔÁ¶Õ¯²¨­±²µ»¾ �

ñ ç�®Ã±DÀ ¬x®Ö±²µ¢®�³²®Ã±t¶ ¼¦èÁ®ÓÂæ±È¶Á¯Ò³Ë¶Õ¬�±È½Á¨­Í»®¹¸í¬ÎÀí®°è|½ ª«×»½ ±²¨«¶ÁÍ»³´¶ ¼¦Ïx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª«³´¶Á¼¦¸�®¹ÔÁ¯È®°®�½|±t¾¿¶Õ³�± ì åñ ç�®Ã±�� ¬x®Ö±²µ¢®�³²®Ã±t¶Á¼ èÕ®¹Âæ±È¶Á¯Ò³´¶Á¬�±Ò½ ¨«Í¢®¹¸í¬êÀÉ®°è|½Áª­×»½ ±²¨«¶ÁÍ»³´¶Á¼ Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³�¶ ¼ ¸¢®°ÔÁ¯È®°®Öª«®¹³È³´±²µ»½ÁÍùÂ�åñ {�µ¢®°ÍBÀ ¤ � ¨Ð³Å±Èµ¢®�³�®°±´¶Á¼z®°è|½Áª­×»½ ±²¨«¶ÁÍ»³Ë¶ ¼ Ï ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª«³Ë¶ ¼é¸¢®°ÔÁ¯È®°® ª­®Ó³²³Ë±Èµ»½ ÍB a ì ±Èµ»½|±´¼v½ÁÂñ²¶Õ¯Ë¨«ÍᲶ¿½Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ª�¶Á¼ ¸�®¹ÔÁ¯È®°®Öª«®¹³È³´±²µ»½ÁÍBÂï½ Í ¸í½¿Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ª�¶ ¼¦¸�®°ÔÕ¯²®¹®�½|±t¾¿¶Õ³�± ì åñãú ÍîÏ»½ ¯²±²¨ÐÂÃ×¢ªÐ½ ¯�À ¤ � ¨«³Ë½�³�×¢¬ ³�®°±Å¶ ¼�±²µ»® ³²®Ã±Å¶Á¼�®¹è|½ ª«×»½|±È¨­¶ÕÍ»³ø¶ ¼�Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³ø¶ ¼�¸�®¹ÔÁ¯È®°®tª«®¹³È³¦±²µ»½ÁÍ, a ì å

ßÁßH��Í »

Page 97: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ñ {z¶Ì³²®°®Ö±Èµ»½|±t±Èµ¢¨«³�¨«³�³�Ïx®¹Â°¨«½Áª�z Í¢¶ ±È®Ö±²µ»½ ±�À ¨«³�½¿èÕ®¹Âñ²¶Á¯�³²Ï»½ÕÂî�¶ ¼ü¸�¨«¾¿®°Í»³²¨«¶ÁÍ ì a ß�½ÁÍ»¸£� ¨«³�½¿èÁ®¹Âñ²¶Õ¯³�Ï»½ÕÂîî¶Á¼t¸¢¨­¾¿®°Í ³�¨«¶ÁÍ"Â�å ¤ µ ½|± ·´®Ìµ»½ èÕ®îÍ¢¶ ±È¨«Â°®¹¸þ¨Ð³�±Èµ»½|± ±²µ¢®¹¨­¯ Ï¢¯²¶�¸�× Âæ± ¨Ð³ °¶ÁÍαȽÁ¨­Í¢®Ó¸þ¨­Í ½ÆèÁ®¹Âñ²¶Õ¯³�Ï»½ÕÂît¶Á¼�¸¢¨­¾¿®°Í ³�¨«¶ÁÍ, a ì åY{�µ¢¨Ð³ü¨Ð³ $3<HINT ³²Ï ®ÓÂèн ª å ú ÍÉÔÁ®°Í»®°¯Ò½ ª¢¨­¼�·Ë®t±Ò½ ÑÕ®t±ð·Ë¶�½Á¯²¬»¨Ç±È¯È½Á¯²À�èÕ®¹Âñ²¶Á¯Ë³�Ï»½ÕÂîӳ¶ ¼ø¸�¨­¾¿®¹Í»³�¨«¶ÁÍdÂï½ÁÍ»¸ ì z¢±Èµ¢®°¨«¯�Ï¢¯È¶�¸�×»Âæ± ·Ë¶Õ×¢ª«¸ïÍ¢¶Á±�¬x® ÂöÕÍÕ±Ò½ ¨«Í¢®¹¸ï¨«Í ½ ÍêÀÌèÕ®¹Âæ±È¶Á¯�³²Ï»½ÕÂî�¶ ¼ø¸�¨«¾¿®°Í»³²¨­¶Õͪ­®Ó³²³´±Èµ»½ Í� ì z ³�¶¿Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³Ë®¹Í»¸ï×¢ÏƬ ®¹¨­Í»ÔîèÁ®°¯ÈÀ̳²Ï ®ÓÂèн ª´�

ú Íî·tµ»½ ±ø¼�¶Áª«ª­¶|·�³ø·´®t·t¨«ª­ª»³²µ¢¶|· ±²µ»½ ±ü±²µ»¨«³Å¨«³¦±Èµ¢® G�2R;UT ³²Ï ®ÓÂèн ª«¨Ç±ðÀ ¶ ¼�Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ª»¬»½Á³²®¹¸¿Âö�¸�®Ó³°å ¤ ®�·t¨­ª«ª ³²µ¢¶|·±²µ ½|±Ë¨­¼z½ ÍêÀ¿Âö�¸�®�®¹Í»¸¢³Å×¢Ï̵»½ èꨫ͢Ô�Í¢¨ÐÂî�Ï»¯²¶ÕÏ ®¹¯�±È¨­®Ó³ü·t¨­±²µÌ¯È®¹³²Ï ®ÓÂæ±ü±È¶�Ï¢¯È¶�¸�×»Âæ±´·t¨Ç±ÈµÉ³²¶Á¾¿®�¶ ±Èµ¢®°¯´Âö�¸�®Ó³?zÕ±²µ¢®¹Í¨­±�°½ Íï¬x®�¸�®¹Â°¶ê¸¢®¹¸�å

�ü�ø�²�ø��� fÆ�¢�¢�ü�{�����t�5³ �¢�t¸@ÿ ýB³¦���»�ç�®°±q� ¬x®Ö½�Ô Êø÷]Â�÷��HÖ , Âö�¸�®Ö½ Í»¸ï³�×»Ï¢Ï ¶Î³�®}zê·Ë®©·t¨«³²µí±²¶¿¸�®¹Â°¶ê¸¢® ×¢Ïí±²¶�¦Ö®¹¯²¯È¶Á¯Ò³ü·t¨­±²µ�U åD{�µ¢®©¼�¶Áª«ª­¶|·t¨«Í¢Ôº¸�®ÃØD�Í¢¨­±²¨«¶ÁÍɸ¢®¹³ÈÂïȨ­¬x®¹³ü½ ³�¨«¾¿Ï¢ª­®©Âöվ ¬¢¨«Í»½|±È¶Á¯È¨«½Áª¢¶Á¬Dáð®¹Âæ±\zÁ·tµ¢¶Î³�®�®H¦�¨«³�±²®¹Í»Âî ³�×T;Ì°®¹³ø±È¶ ÔÕ¨­èÕ®�½�¸�®¹Â°¶�¸�¨­Í»Ô ½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾¼�¶Á¯q�ºå

�ï{���� s��¹s�h�� �x� � 6 � ZR0 ' IaGtE£; ' 2:<�03I�P�G\4b<HK Û Ê ÷[�ºÝ�X c ' >�C*Ê ÷]��� Å � , X EHG�IN� 0�2 ¦°� ®¹¯²¯È¶Á¯[� °¶Á¯È¯²®ÓÂæ±È¨­Í¢Ô©Ï»½Á¨­¯ EHG�I0ª; ' 2:<�03IÐP�G\4b< � � Å � , ' E9>�CD<?TFK?03> ' KJE�T,>JCR<(EHG�;J;=G3c ' 2�V�P]G�2:4 ' > ' G�2DK<Äì @DÊ ¤ �¨�Ë� @í @BA:CR<Ð4 ' �F<?2DK ' G�2ÎGtElÊ ' K9KNMHOËP ' <?2R>S;UTª;=03ISV}<iÄQ1�ZR<]P ' \eP�0�;J;UT X ¸�¨«¾ÚÛ Ê Ý 8 ¦ @ð @BA:CR<�� ' 2 ' �7M^� 4 ' KN>�0�2:P�<7G�E � ' K£KNMHOQP ' <?2R>S;UTª;=0�I�VW<ÇÄQ1�ZR<�P ' \nP�03;J;UT X| íÛ�� Ý 8 ¦ @§ @BA:CR<�� ' 2 ' �7M^� 4 ' KN>�0�2:P�<7G�E � ' K9KNMHOËP ' <?2R>S;UTª;=03ISV}<iÄ  íÛS��Ý 8 Êíá1 ïÛ Ê Ý @�ü�ø�²�ø� � (�´�� �¡�L¸����D³ø���tÞ��z�¨p¡�eÿü�ü� � �D´qµú Í ±²µ¢¨Ð³ ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾Bzz·´®Ì½Á³È³�×»¾º®º±Èµ»½|± ·´®Ì½ ¯È®¿ÔÁ¨«èÁ®¹Í ÔÕ®°Í¢®¹¯È½ ±²¶Õ¯©¾î½ ±²¯È¨«Â°®¹³©¼�¶Á¯ ª­¨«Í¢®¹½Á¯ Âö�¸�®Ó³ Ê z|��z¦½ Í ¸Î�7z·tµ¢®¹¯²®îÛ Ê ÷[� ¼�¶Õ¯²¾¤½ Í©¦?� ®°¯È¯È¶Á¯[� °¶Á¯È¯²®ÓÂæ±²¨«Í¢Ô�Ï»½Á¨­¯�¼�¶Õ¯q�ºå¶�m�OÇ�°y3! Z �b¹ { Z h?¹ sG� uÎ! é u:h y sG� � �Ä sn�x{ô��æ ­ ½|±È¯²¨ÐÂîӳ ¶ ÷ � ÷ è ÔÕ®°Í¢®¹¯È½ ±²¨«Í¢Ô~Âö�¸�®Ó³ Ê ÷[�É÷]� ��Å � , zü·t¨­±²µ Û Ê ÷]� Ý ¼�¶Á¯È¾¿¨­Í»Ô,¦°� ®¹¯²¯È¶Á¯[� ÂöÁ¯È¯È®¹Âæ±È¨­Í»ÔÏ»½ ¨«¯´¼�¶Á¯��ºå��t®ÓÂ­èÕ®¹¸íèÁ®¹Âñ²¶Õ¯n�1��Å � , åS?�¹{7N ��æ � ¨­Í ¸ ! � Ê ½ Í ¸ m ��� ³²×»Âҵﱲµ»½ ± !$¤ � �m ½ Í ¸ Û ! ÷ m Ý£Ò Û�Ñz÷]ÑxÝNz¢¨­¼¦³²×»ÂÒµÚ½ºÏ»½ ¨«¯t®H¦�¨Ð³ð±Ò³°åS?�¹{7N���æ U˶Á¾¿Ï¢×¢±²® à �þÛJÅ , ç~ÿ �b�|Ý � ½Á³Ë¼�¶Áª«ª­¶|·�³ � ú ¼§µ æ � zê±Èµ¢®°Íª; æ ��®¹ª«³²®�; æ Þ æ åS?�¹{7NÍ6?æ ¢ ×�±ÈÏ¢×�±¦±²µ¢®t¯È®¹³²×¢ª­±ø¶ ¼ Ïx®°¯²¼�¶Á¯È¾¿¨­Í»Ô©®¹¯È½Õ³�×»¯²®�¸�®¹Â°¶�¸�¨­Í»Ô©¶ÕÍ Ã ¼�¶Õ¯üÂö�¸�®l�7zÁ¨­¼ ±Èµ¢¨Ð³ø¯²®Ó³�×»ªÇ±Ò³é¨«Íע͢¨�¯Õ×»®

Âö�¸�®°·´¶Á¯Ò¸�å

x ³�× ³�×»½Áª�·Ë®�½ ¯ÈÔÁ×»®�®�;Ì°¨­®¹Í»ÂÃÀîØ ¯È³�±�½ Í»¸íÂöÁ¯È¯È®¹Âæ±ÈÍ¢®¹³È³Ëª«½ ±²®°¯Óå í ;ÌÂè«®°Í ÂÃĄ̀г´¶Á¬êèꨭ¶Õ×»³Ë¼�¶Á¯l�α²®¹Ï � å|�¢¶Õ¯��ê±²®°Ï ¡ z¯È®¹Â°½Áª­ª¢±²µ»½ ±Å·Ë®�¶Á¬»³²®°¯ÈèÁ®Ó¸ ¨«Í¿±²µ¢®�ª«½Õ³ð±Åª«®¹Âñ²×¢¯È®�±²µ ½|±Ë®¹¯È½Õ³�×»¯²®?� ¸�®ÓÂö�¸�¨«Í¢ÔÖ°½ Í¿¬x® ¸�¶ÕÍ¢®t¨«Í�è¿Û�Êj© ݦ±²¨«¾¿®t¼�¶Á¯Å®°èÁ®¹¯²Àª«¨­Í¢®Ó½ ¯´Âö�¸�®Áå«�ê¶ ¨Ç±t³²×T;ÌÂî¹³ü±²¶º½ ¯ÈÔÁ×¢®�®<;ÌÂè«®°Í»Â°Àº¶Á¼·�α²®¹Ï~ßÕå ¤ ®©¸¢¶ ³�¶ ¬êÀ¿Â°ª«½Á¨­¾¿¨«Í¢Ô�±Èµ¢¨«³´¨Ð³Ë½�±È½Á³²Ñ¿¶ ¼�Ø»Í ¸�¨­Í»Ô½î³²¶Áª«×�±²¨«¶ÁÍï±²¶í½¿ª­¨«Í¢®¹½Á¯�³²Àê³�±²®¹¾ÆånÏ�¶ ±²®Ö±Èµ»½|± ·Ë® ½Á¯²®�³²®¹½Á¯ÈÂÒµ¢¨«Í¢Ôº¼�¶Á¯�ע͢ÑêÍ¢¶|·tÍ»³lµ - ÷ �?�°� ÷5µ � ÷ · - ÷ �°�?� ÷ · � ��Å , å{�µ¢®Ì°¶ÁÍ»¸�¨­±²¨«¶ÁÍ ±²µ ½|± ! � Ê Ï¢ªÐ½Á°®¹³Öª«¨­Í¢®Ó½ ¯�°¶ÁÍ»³�±²¯Ò½ ¨«Íαȳ©¶ÁÍ�µ - ÷ �?�?� ÷,µ � å,�ꨭ¾¿¨«ª«½Á¯²ª«Àbzz±²µ¢®Ì°¶ÁÍ»¸¢¨Ç±È¨­¶ÕÍ m �Ë�

ßÁßH��Í7õ

Page 98: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

±²×»¯²Í»³�¨­Íα²¶îª«¨«Í¢®¹½Á¯�ÂöÕÍ»³ð±È¯È½Á¨­Íαҳ˶ÕÍ · - ÷ �?�?� ÷ · � å x ª«³²¶Rz¢±²µ¢® °¶ÁÍ»³�±²¯Ò½ ¨«ÍαȳOµ æ Þ æ · æ ¨Ð³�½ ªÐ³�¶¿ª«¨­Í»®¹½ ¯t¨«Í£µ æ ½ Í ¸ · æÛv³²¨«Í»Âî�Þ æ ¨«³tØD¦�®¹¸»ÝÃå´çé½Á³�±²ª«Àbz�±Èµ¢® ÂöÕÍ»¸�¨­±²¨«¶ÁÍ�Û ! ÷ m Ý�Ò Û�Ñz÷]ÑxÝ�¨Ð³Yáð×»³�± ½Á³²Ñê¨­Í»Ô ¼�¶Õ¯�½îÍ¢¶ÕÍ^� ì°®°¯È¶¿³�¶Õª­×�±È¨­¶ÕÍï±²¶î±Èµ¢¨«³ª«¨­Í¢®Ó½ ¯©³�À�³�±²®°¾Æå9�ê¶Ì±Èµ¢®�±Ò½Á³²Ñï½ ± µ»½ÁÍ»¸Ú¨Ð³�±Èµ»½|±©¶ ¼øػͻ¸¢¨­Í¢Ôï½ÌÍ¢¶ÕÍ^� ±²¯È¨­èê¨Ð½ ªé³²¶Áª«×�±È¨­¶ÕÍƱ²¶í½Éµ¢¶Á¾¿¶ÕÔÁ®°Í»¶Á×»³tª«¨«Í¢®¹½Á¯³²Àê³�±²®¹¾Æå x Ôν ¨«Í ±Èµ¢¨Ð³�°½ÁÍ ¬x®Ì¸�¶ÕÍ¢®î®�;ÌÂè«®°ÍαȪ­À}z騫Íßè¿Û�Êj© Ý©±²¨«¾¿®Áå ú ± ¯È®°¾î½Á¨­Í»³©±È¶ÚÏ¢¯È¶|èÁ®¿ÂöÁ¯È¯È®¹Âæ±ÈÍ¢®¹³È³Ö¶ ¼´±²µ»®½ ¬x¶|èÁ®Ö½ ª«ÔÁ¶Õ¯²¨­±²µ»¾�z¢½ÁÍ»¸í·Ë®�¸�¶Ì³²¶¿Í¢®H¦ê±¹å

�ü�ø�²�ø�Dü x �ü�¢�»�z�x�D¸��z�ê�{�µ¢®´Ï¢¯È¶Î¶Á¼¢¶ ¼ °¶Á¯È¯²®ÓÂæ±ÈÍ¢®¹³È³�Ôնήӳ�±Èµ¢¯È¶Á×¢ÔÕµ�±²µ¢®�×»³²×»½ÁªÎ³�±²®¹Ï»³°å ¤ ®´½Õ³²³²×¢¾¿®Å¬x®°ª«¶|·�±²µ ½|± ±²µ¢®¹¯²®Ë®H¦�¨«³�±È³¦½ Âö�¸�®°·´¶Á¯Ò¸Z �ù� ±²µ»½ ±é¨Ð³é°ª­¶Î³�®¦±È¶ Ûv·t¨Ç±Èµ¢¨­Íº½ � ½Á¾¿¾º¨«Í¢Ô©¸�¨«³�±È½ÁÍ»ÂîŶ ¼F¦Ë¶ ¼ÈÝ�±²µ¢®Ë¯²®ÓÂ­èÕ®¹¸©èÁ®ÓÂæ±²¶Õ¯L�üå ¤ ®üØD¦©±²µ¢¨Ð³ Âö�¸�®°·´¶Á¯Ò¸½ Í ¸É×»³²®�¨­±t±²¶î½ ¯ÈÔÁ×¢®�°¶Á¯È¯²®ÓÂ汲ͻ®¹³È³°å¬´®°ª«¶|· ·´®î½ ¯ÈÔÁ×¢®º±²µ ½|± ½Æ³�¶Õª­×¢±²¨«¶ÁÍþÏ»½ ¨«¯ÌÛ ! ÷ m Ý ±²¶d�αȮ°Ï ß̸�¶ê®¹³Ö®?¦ê¨Ð³�±¹å ¤ ®Ì½ ¯ÈÔÁ×¢® ±²µ ½|± ½ ÍêÀ~³²¶Áª«×�±È¨­¶ÕÍ Ï ½ ¨«¯Û ! � ÷ m �ÐÝ�±²¶��α²®¹Ï ß ³È½|±È¨«³�Ø»®Ó³ ! � ¤ Z Nm � å9Ï�®H¦ê±Ö·Ë®º³�µ¢¶|·à±Èµ»½|±©¼�¶Á¯Ö½ ÍêÀÆÏ»½Á¨­¯ ! �«� Ê ½ Í»¸ m �|�1� ±²µ¢®¹¯²® ¨«³½|±�¾¿¶Î³ð± ¶ÕÍ¢® Z �q�Q�¤³²×»ÂÒµ ±²µ»½ ± ! � ¤ Z � m � å�{�µ¢®íÂöÁ¯È¯È®¹Âæ±ÈÍ¢®¹³È³©¼�¶Áª«ª«¶|·�³Ö¬ÎÀ Í¢¶Á±²¨ÐÂè«Í¢ÔƱ²µ»½ ±�±²µ»®É³�¶Õª­×¢±²¨«¶ÁÍZ � ¶Õ×�±²Ï¢×¢± ¬êÀï±²µ¢®¿½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾ ³È½|±²¨Ð³�Ø»®¹³ ! � ¤ Z � Nm ��z�¨Ç¼©Û ! � ÷ m �ÐÝt¨Ð³�±Èµ¢®º³²¶Áª«×�±È¨­¶ÕÍƼ�¶Áעͻ¸~¬êÀ��ê±²®°Ï ßÁå�� ®Ã±Ò½ ¨«ª«³¬x®°ª«¶|·�å

èÐé !¢s�� �x� �$# A5CD<?I[<l< )}' KN>vKe0(ZR0 ' I Û ! ÷ m Ý 03K(I[<�ãHM ' I]<]4 ' 2�1î>�<�Z ì < )}' K�>�K?@ % M^IN>JCR<HIN�ªG3I[<n>�CD<?TlK?0�> ' K�E�T !{¤ Z ¸m @gÖy3hih:j ¬´À�Ïx®°®¹Ñꨭ͢ÔÖ¬»½ÕÂÒÑ�½|±¦±²µ»®�½ÁÍ»½ ª«¶ÁÔÕ¶Á×»³ Âêн ¨«¾ ¨«Í ±Èµ¢®��t®°®Ó¸����ê¶Áª«¶Á¾¿¶Áͺ¸�®¹Â°¶�¸�®°¯\z ·´®´¯È®¹½Áª­¨«ì°®´·´®Ë·�½ Íα !±²¶Ö¬x®�±²µ¢®e)²®°¯È¯²¶Õ¯t� ª«¶ê¹½|±È¶Á¯�+Dzè å ®Õå=zγ²½ ±²¨Ð³ð¼�Àꨫ͢Ô"µ æ � ¨­¼�Þ æ Ò C æ å¥U´½ÁÍ ·´®´Ø»Í»¸¿³�× ÂÒµº½©èÁ®ÓÂæ±È¶Á¯ ±²µ»½ ±ø¨«³øÍ»¶ÁÍ^� ì°®¹¯²¶��{é×¢¯²Í ³¦¶Á×�±ø·´®�¹½ ÍizÁ¨Ç¼�·Ë®�ÑêÍ¢¶|· Ê µ ½Á³¦³�×�;î°¨­®¹ÍᲪ«À ªÐ½ ¯ÈÔÁ®Ë¸¢¨­¾¿®°Í ³�¨«¶ÁÍ�å ú Í¿Ï»½ ¯²±²¨ÐÂÃ×»ª«½Á¯°z ±Èµ¢®tÂöÁÍ ³ð±È¯È½Á¨­Íαȳ§µ æ �ÔÁ¨«èÁ®w¦�µ¢¶Õ¾º¶ÕÔÁ®¹Í¢¶Á×»³éª«¨­Í¢®Ó½ ¯øÂöÕÍ»³�±²¯Ò½ ¨«ÍÕ±Ò³ ¶ÁÍ�µ - ÷ �?�°� ÷5µ � å|�ꨫͻÂî ¶ µ»½Á³ø¸�¨«¾¿®°Í»³²¨«¶ÁÍ ¦ a ßŶկ¦ª«½Á¯²ÔÕ®°¯�Û9U˶ÁÍ ¸�¨Ç±È¨­¶ÕÍÛ � Ý˶ ¼�±Èµ¢®�¸�®Ãػͻ¨Ç±È¨­¶ÕÍí¶Á¼é½ Íí®°¯È¯²¶Õ¯t� Âöկ²¯È®¹Âñ²¨«Í¢Ô�Ï»½ ¨«¯æÝNzê¨Ç±�°¶ÁÍαȽÁ¨­Í»³´½ºÍ¢¶ÁÍD� ì¹®°¯È¶�èÁ®ÓÂæ±²¶Õ¯Å±Èµ»½|±�³È½|±È¨«³�Ø»®¹³�½Áª­ªx±²µ»®¹³²®ÂöÕÍ»³�±²¯Ò½ ¨«ÍÕ±Ò³��Ï�¶|· ±È½ÁÑÁ® ! ±È¶�¬ ®�½ÁÍêÀ Í¢¶ÕÍ^� ì¹®°¯È¶ÖèÁ®¹Âñ²¶Õ¯ü³²½ ±²¨Ð³ð¼�Àꨫ͢Ô�µ æ � ¨­¼ C æ Ò Þ æ åY{é½ÁÑÁ® m ±È¶�¬x®t±²µ¢®tèÕ®¹Âñ²¶Á¯ !'¤ Z åYÏ�¶ ±È®±²µ ½|± m �B� ³²¨­Í Âî Ê ¤ � �Ë�Ìå|�¢×»¯�±Èµ¢®°¯È¾¿¶Á¯È®bz|¼�¶Õ¯ü®°èÕ®°¯ÈÀ�å�zÁ·´®tµ»½ èÁ®�®°¨­±²µ»®°¯ C æ Þ æ ½ÁÍ»¸î³²¶ · æ µ æ C æ µ æ Þ æ z¶Á¯Ö·´® µ ½ èÁ®�µ æ � ½ Í ¸ µ¢®¹Í»Âî · æ µ æ C æ � µ æ Þ æ åÐ�»×¢¯²±²µ¢®¹¯²¾¿¶Á¯È®�±Èµ¢®¿Ï»½ ¨«¯Ö¨«³©Í¢¶ÕÍ^� ì°®°¯È¶í³²¨«Í»Âî ! Ò Ñ�å{�µ¢¨Ð³�ÂöÕÍ»Âê«×»¸�®Ó³´±²µ¢®�Ï»¯²¶ê¶ ¼ ¶ ¼é±²µ¢®�°ª«½Á¨­¾Æå

èÐé !¢s�� �x� �Ü} ë E ! � ÷ m � 0�I[<Ð0�2RT£ZR0 ' IÐGtE£K?G3;UM^> ' G32RK9>�G§1:>�<�Z ì X >JCR<H2 ! � ¤ Z �m � @gÖy3hih:j �ê¨­Í Âî ! � ÷ m �é½ ¯È®©¶Õ×�±²Ï»×�±È³�¶ ¼«�α²®¹Ï�ßbz¢±Èµ¢®°Àï³²½ ±²¨Ð³ð¼�Àí±²µ»®�ÂöÁÍ ¸�¨Ç±È¨­¶ÕÍiz ! � ¤ � �m � å´çz®Ã± ! � ¤ Z Ím�« å{é¶ÌÏ¢¯È¶|èÁ®Ö±²µ»®ºÂ°ª«½Á¨­¾¤·Ë® Í¢®°®Ó¸Æ±²¶í³�µ¢¶|· m � m�« å£�ê¨­Í Âî Ê ¤ � �É��zx·Ë® ÑêÍ¢¶|· ±²µ»½ ± m�« ���Ìå�{�µ¢®°¯È®Ã¼�¶Õ¯²®}zm �Ž Í ¸ m¬« ½ ¯È®¿±ð·Ë¶ °¶�¸�®°·´¶Á¯Ò¸¢³Ö¶ ¼l� ±Èµ»½|±¿½ ÔÕ¯²®¹®º¶ÕÍ�®°èÕ®°¯ÈÀ Âöê¶Õ¯È¸�¨«Í»½ ±²®Få�¼�¶Õ¯ ·tµ¢¨ÐÂÒµ'Þ æ WC æ Û · �æ µ æ Þ æ½ Í ¸ · «æ µ æ C æ Ýæå�¬Ë×¢±�Þ æ C æ ¶ÕÍ�½|±�ª«®¹½Á³�±�Ê~á ¦ÌÂöê¶Á¯Ò¸�¨«Í»½|±È®¹³°zz½ Í ¸ ³²¶d ïÛ m �v÷ m¬« ÝÐm­¦Îå�¬´×�±7 ïÛ�� Ý 8 ¦Û9U˶ÕÍ»¸�¨­±²¨«¶ÁÍ�Û ¡ Ý˶ ¼ ±²µ¢®�¸�®°Ø»Í¢¨­±²¨«¶ÁÍƶ ¼ø½ Íï®°¯È¯È¶Á¯[� °¶Á¯È¯²®ÓÂæ±²¨«Í¢Ô�Ï»½Á¨­¯æÝNz»¨­¾¿Ï¢ª«Àê¨­Í¢Ô m � ±m¬« ½Õ³�¯²®\¯Î×¢¨­¯È®¹¸�åèÐé !¢s�� �x� ��ÇÉ% G3I�0�2RT Û ! � ÷ m �ÐÝn� Ê Ã�� á ÿ Û�Ñz÷]ÑxÝ�� >JCR<HI[<9< )}' K�>�K�03>Y�ªG�KN>|G32:< Z �ù� KNMRP�Cª>�CD0�> ! � ¤ Z ±m � @gÖy3hih:j ç�®°± Z ÷ Z �½��� ³È½|±È¨«³�¼�À ! � ¤ Z m � É! � ¤ Z � ål� ¨­¯Ò³ð±\z ª«®Ã± ×»³�Í¢¶Á±²®�±Èµ»½|±©·Ë® ½ÁÂæ±È×»½ ª«ª«Àɵ»½ èÕ® ! �nÒ Ñ�åÛ ú ¼üÍ»¶ ±°z ±²µ»®°Í m � ý! � ¤ Z � ·Ë¶Õ×¢ª«¸Ú½Áª«³²¶î¬x®ÐÑ ½ÁÍ»¸Æ±²µ»¨«³ ÂöÁÍαȯȽո�¨«Âñȳ�±Èµ¢® °¶ÁÍ»¸¢¨Ç±È¨­¶ÕÍƱ²µ»½ ±�±²¶ÕÔÁ®Ã±Èµ¢®°¯�±²µ¢®¹Í~½ ¯È®Í¢¶ÕÍ^� ì¹®°¯È¶»å Ý

ßÁßH��Íb�

Page 99: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

{é¶ Ï¢¯È¶|èÁ®�±²µ¢®�°ª«½Á¨­¾Bzê·Ë®©·t¨Ð³�µí±²¶¿³�µ»¶|· Z Z � å|��¨­Í»Â°®Ö¬ ¶Á±²µÆ½ ¯È® Âö�¸�®¹·Ë¶Õ¯È¸»³Å¶Á¼Y�7z�¨­±t³²×T;ÌÂîӳ˱²¶¿³�µ¢¶|·�±²µ»½ ± ïÛ Z ÷ Z ��Ý +  ïÛ���ÝÃåЬ´×�±�Í¢¶Á±²® ±²µ»½ ± C æ C �æ ¼�¶Õ¯Ö®°èÁ®¹¯²ÀBå�z�·tµ¢®°¯È®*µW�æ Ò � å��¢×¢¯²±²µ»®°¯\z�³�¨«Í»Âî ! �qÒ Ñiz�·´® µ»½ èÕ®µ��æ Ò � ¶ÕÍƽ ±tª­®Ó½Á³�±l ïÛ Ê Ýt°¶Î¶Õ¯È¸¢¨­Í»½ ±²®Ó³°åY{�µê×»³�·Ë®Öµ»½ èÕ®bzR ïÛ Z ÷ Z �ÐÝ�m ÊïáΠïÛ Ê Ýæå(¬´×�±�U˶ÕÍ»¸�¨­±²¨«¶ÁÍþÛ��êÝ´¨­Íï±²µ»®¸�®°Ø»Í¢¨­±²¨«¶ÁÍﶠ¼é½ÁÍÉ®°¯È¯È¶Á¯[� ª«¶�°½|±È¨­Í»Ô�Ï»½ ¨«¯�®°Í»³²×¢¯È®¹³Å±²µ»½ ±�ÊÉád íÛ Ê Ý +  ïÛ���ÝÃå({�µê×»³´·Ë®©ÔÁ®°±� ïÛ Z ÷ Z �ÐÝ +  ïÛ���Ý�½Õ³¸�®Ó³�¨«¯²®Ó¸�å

¤ ®�°½ ÍïÍ¢¶|· ¼�¶Á¯È¾¿½Áª­ª«ÀÌÏ¢¯È¶|èÁ® ±²µ»®�ÂöÁ¯È¯È®¹Âæ±ÈÍ¢®¹³È³Ë¶ ¼ ±²µ¢®�¸�®ÓÂö�¸�¨«Í¢Ôî½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾Æå

�Å{�� �"!�� �x��ê�ë E Û Ê ÷[�ºÝ EHG3IN� 032 ¦ /t<HINI]G3I4/tP�G3INI[<�P?> ' 2�VdZD0 ' IªEHG3I � 0�2:4 Z � � 0�2:4 � �ÊÅR� , K?03> ' K�E�T ïÛ Z ÷t�éÝlm ¦}X >JCR<H2�>JCR< ¶2mROÇ�°y3! Z �b¹é{ Z h?¹ésD�éuÎ! é uîh y|s�� � � G3M^>*Z:M^>�K Z G32 ' 23Z:M^>§Ê ÷]� � �ÐX 03254 � @gÖy3hih:j ¬´À�U˪«½Á¨­¾ ßÕßÁå �RzÁ·´®�µ ½ èÁ®�±Èµ»½|±Ë±²µ¢®¹¯²® ®H¦�¨Ð³ð±Ò³Ë½ Ï»½ ¨«¯ ! ÷ m ³²½ ±²¨Ð³ð¼�Àꨫ͢Ô�±Èµ¢® °¶ÁÍ»¸¢¨Ç±È¨­¶ÕÍ»³Å¶Á¼½�αȮ°Ï~ßÕåY��¶³²¶Á¾¿®´³²×»ÂÒµ Ï»½ ¨«¯ ! � ÷ m �ê·t¨«ª«ªÎ¬x®´¼�¶Á×¢Í ¸�彬´À�U˪н ¨«¾ ßÁßÕå �Dz Z ·t¨«ª­ª¢³È½|±È¨«³�¼�À ! � ¤ Z ¸m � å|�ꨫͻÂî}z ! � ¤ Z ¸m � ä! � ¤ �«z·´®Éµ»½ èÕ® CHæ9 Þ æ ·tµ¢®¹Í¢®°èÕ®°¯�µ æ Ò � ½ Í ¸þ±²µê×»³ CHæ ¨Ð³º½ è|½ ª«¨«¸ ³�¶Õª­×�±È¨­¶ÕÍþ±²¶Î�α²®¹Ï ¡ ¶Á¼t±²µ¢®ï½ ª«ÔÁ¶Á¯È¨­±²µ¢¾Æåù{é¶ÂöÕÍ»Âê«×»¸�®}z»·´®�Í¢®¹®¹¸ï±²¶î®¹Í»³²×¢¯²®�±²µ»½ ± Z ¨Ð³t±²µ»®�¶ÁÍ¢ª«ÀƳ�¶Õª­×�±È¨­¶ÕÍï±²¶��αȮ°Ï ¡ ¶Á¼¦±²µ¢® ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾Æån¬´×�±�±²µ¢¨Ð³�¨Ð³�½Áª«³²¶Âê«®¹½Á¯°z�³²¨­Í Âî�½ ÍêÀ̳²¶Áª«×�±²¨«¶ÁÍ Z �x±È¶ ±Èµ¢¨Ð³�³ð±È®°Ïï¾ ×»³�±�³²½ ±²¨Ð³ð¼�À�µ��æ C �æ µW�æ Þ æ · �æ ¼�¶Á¯t®¹èÁ®°¯ÈÀFå�z¢½ Í»¸É±²µê×»³�¾ ×»³ð±t¬x®�½Âö�¸�®¹·Ë¶Õ¯È¸º¶Á¼i�à³È½|±È¨«³�¼�Àê¨­Í»Ô ! � ¤ Z � ±m � ½ÁÍ»¸î¬êÀ U˪н ¨«¾¤ßÁßÁå » z Z ¨Ð³ø±Èµ¢®�עͻ¨$¯Î×¢®�èÕ®¹Âñ²¶Á¯Ë·t¨Ç±Èµ¿±²µ¢¨Ð³ËÏ¢¯²¶ÕÏ ®¹¯�±ðÀÕå

¤ ®�ÂöÁÍ Âê«×»¸�®Ö·t¨Ç±Èµï±²µ¢®Ö¼�¶Õª­ª«¶|·t¨­Í»Ô ±Èµ¢®°¶Õ¯²®¹¾ �

��� {�h»y|{�� �x� �� ��2îT�P]G\4b< � >�CD03>«CD03Ka032 ¦ /t<?INI[G3I4/tP�G�INI[<�PH> ' 2WV9ZD0 ' I�CD0�KÐ0�2�<�OËP ' <?2R> A è¿ÛvÊj©ÓÝ > ' �ª< C 0�; V}G0/I ' >�C��.KHG�;©$ ' 2WV�>JCR<ÐÌ�G�M^2:4b<�4�4 ' KN>�0�2:P�<74b<�P�G°4 ' 2WV�Z:I[G}ÌH;$<H�ýEHG3IaM\Z�>�G ¦ <?INI[G�I�KH@�ü�ø�²�ø�]® p¸h�h©�����5³ �¢�ð�e¸��ê�ëAì0írîiï ðzì7ñ kø®°¯È¨Ç¼�Àï±Èµ»½|± ±²µ¢® � { é Z � Q,�º{Õy é {�åD!R�#N ½ ª«ÔÁ¶Õ¯²¨­±²µ»¾ ¼�¯È¶Á¾¤±²µ»® ªÐ½Á³�± ª«®¹Âæ±È×¢¯È® ¨Ð³ ½ÁÍ ¨­Í ³ð±Ò½ Íα²¨Ð½|±È¨­¶ÕÍÚ¶ ¼±²µ»® ¶�m�O<�¹y�! Z �b¹ { Z h?¹ sG� u�! é u:h»y|s�� � � ÔÁ¨«èÁ®¹Í̱²¶�¸¢½ ÀÕå¤ ®ºÍ»¶|· ¾¿¶|èÁ® ¶ÕÍ ±È¶ï½í¾¿¶Á¯È® ¨«Íα²®°¯È®¹³�±²¨«Í¢Ô⦆ϢϢª«¨Ð°½|±È¨­¶ÕÍ�åÐ�t®Ó°½Áª­ª ±²µ»®¿Â°¶ÁÍ»³�±²¯È×»Âñ²¨«¶ÁÍ ¶Á¼´½ ª«ÔÁ®¹¬¢¯Ò½ ¨ÐÂN� ÔÁ®°¶Õ¾¿®Ã±²¯ÈÀÂö�¸�®Ó³°åtÛ�{z¶î¬x®�¾¿¶Á¯È®©Ï»¯²®ÓÂèг�®}z�¯²®Ó°½ ª«ªx±²µ»½ ±�·Ë®ÖÑêÍ¢¶|·ëèÁ®°¯ÈÀ̪«¨Ç±²±²ª«®�½ ¬x¶Á×�±�±Èµ¢®°¾ ±²¶¿¯È®¹Â°½Áª­ª�¾ ×»ÂÒµ�å Ý

¶ é u {@m y3!¢s Z QÈux{Wh:�ã{7�°y � Z h?¹ {ôOÁ� {�µ¢®Ó³�® °¶�¸�®¹³�·Ë®¹¯²®�°¶ÁÍ»³�±²¯È×»Âæ±È®¹¸Æ¬êÀíػͻ¸�¨«Í¢ÔÌÊ�Ïx¶Á¨«Íαȳ�¨«ÍBÅ   , ½ Í»¸Æ®¹è|½ ª=�×»½ ±²¨«Í¢Ôí½Áª­ªéÏ ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ªÐ³�¶Á¼�)�¶Õ¯È¸�®¹¯,+î½ ±�¾¿¶Õ³�±�� ½ ± ½ ª«ªéÊ�Ï»ª«½ÕÂî¹³¹åq{�µ¢® ¼�¶Áª«ª­¶|·t¨«Í¢ÔÌÏ»¯²¶ÕÏ ®¹¯�±È¨­®Ó³�¶ ¼ø¶Õ¯È¸�®¹¯�·´®°¯È®×»³²®¹¸ï¨«Íï½Õ³²³²®°¯²±²¨«Í¢Ôº±²µ»½ ±�±²µ¢®Ó³�®�Ôν èÁ®©ÔÁ¶ê¶�¸í°¶ê¸¢®¹³ �

ßÕål{�µ¢®°¯È®t®H¦�¨Ð³ð±Ò³Å½ ÍÍα²®¹ÔÁ®°¯�F ³²×»ÂÒµ¿±²µ»½ ±Å¼�¶Õ¯Å®°èÕ®°¯ÈÀ���zÁ±²µ¢® ®°è|½ ª«×»½|±È¨­¶ÕÍ»³ø¶Á¼�Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ªÐ³ø¶Á¼�¶Õ¯È¸¢®°¯Å½ ±Å¾¿¶Õ³�±��¼�¶Á¯È¾¿®¹¸ï½¿³�×¢¬ ³�Ï»½ÕÂîֶ ¼½ÅD� , ¶ ¼ø¸�¨­¾¿®¹Í»³�¨«¶ÁÍƽ|±�ª«®¹½Õ³ð±���á·F a ßÕå� ål{�·Ë¶Æ¸�¨Ð³ð±È¨­Í»Âñ�Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ªÐ³Ö¶ ¼Ë¶Á¯Ò¸�®°¯�½|±�¾¿¶Õ³�±�� °½ÁÍ ½ÁÔÁ¯È®°® ¶ÁÍþ½|±�¾¿¶Õ³�±�� ¶Á×�±�¶ ¼Ë±²µ¢®îÊ ®°è|½ ª«×»½ ±²¨«¶ÁÍÏ ¶Õ¨­Íαȳ¹å

¡ ål{�µ¢®ÖÏ¢¯²¶�¸�× Âæ±�¶ ¼é±ð·Ë¶¿Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³�¶ ¼é¶Õ¯È¸¢®°¯�� - ½ Í»¸�� / µ»½Õ³�¶Á¯Ò¸�®°¯t½|±�¾¿¶Î³ð±�� - a � / å{�µ¢®Ó³�®ºÏ¢¯È¶ÁÏx®°¯²±²¨«®¹³©³�×T;Ì°®�±²¶ïÏ¢¯È¶|èÁ®�±Èµ»½|±�°¶ê¸¢®¹³ ¶Á¬�±Ò½ ¨«Í¢®¹¸~¬ÎÀï±Èµ¢®¿®°è|½ ª«×»½|±È¨­¶ÕÍ ¶ ¼ËÏ ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ªÐ³ ¶ ¼Å¶Õ¯È¸�®¹¯ ½ ±¾¿¶Õ³�±üÊÖá¿ù a ß�ÔÁ¨«èÁ®t½ Í�Ô Êø÷]Â�÷Èù�Ö , Âö�¸�®�¼�¶Õ¯Å³�¶Õ¾¿®�ÂíÞ ÊÖá¿ùÅá�F a ßÁå x ³ü·Ë®�³²®°®�¬x®°ª«¶|·�z ±²µ»®�³²½Á¾º®tÏ»¯²¶ÕÏ ®¹¯�±È¨­®Ó³½ ªÐ³²¶ºÔÕ¨­èÕ® × ³�½ Í°¯ � ~²±\~ � ~Ø-/ ³ � ®°¯È¯²¶Õ¯t� Âöկ²¯È®¹Âñ²¨«Í¢Ô�Ï»½ ¨«¯�¼�¶Á¯�±Èµ¢®¹³²®�Âö�¸�®Ó³°å

ßÁßH��ÍbÍ

Page 100: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

�Å{�� �"!�� �x�!=Éë E � ' Kd032 0�; V}<\Ì?I[0 ' P</vV}<�G��F<?>�INTQP�G°4}<dGbÌ?>�0 ' 2:<�4 ÌHT"<<$�0�;UMR03> ' 2WVBZDG�;UT32:G�� ' 0�; K�GtEBG�I[4b<?Id03>�ªG�KN> �3X >�CD<?2 ' >«CD03K�0�2 ¯ � ~I±\~ � ~Ø-/ ³ /t<?INI[G�I4/tP]G�INI[<�PH> ' 2WV9ZD0 ' I?@gÖy3hih:j çz®Ã±u¦,m � ~²±\~ � ~Ø-/ åЬ´®°ª«¶|· ½ ª«ªø¯²®°¼�®°¯È®°Í»Â°®¹³�±²¶í±²µ¢®�)4U˶ÁÍ»¸�¨­±²¨«¶ÁÍ ³5+í½ ¯È® ±È¶É±Èµ¢®º¼�¶Á×¢¯�ÂöÕÍ»¸�¨­±²¨«¶ÁÍ»³©¨«Í±²µ»®�¸�®Ãػͻ¨Ç±È¨­¶ÕÍï¶Á¼¦½ÁÍ´¦°� ®°¯È¯²¶Õ¯t� Âöկ²¯È®¹Âñ²¨«Í¢Ô�Ï»½Á¨­¯Óå{é¶ÉÔÁ®°±©½Áͦ°� ®¹¯²¯È¶Á¯[� °¶Á¯È¯²®ÓÂæ±È¨­Í¢ÔºÏ»½Á¨­¯\z�·Ë® Í¢®°®Ó¸ ¸�¨«¾ Û Ê Ý 8 ¦ÆÛܱȶí³È½|±²¨Ð³�¼�À�U˶ÕÍ»¸�¨­±²¨«¶ÁÍ � Ýæå ¤ ® ·t¨«ª­ª Ï¢¨ÐÂÒÑ Ê ±È¶¬x® ±Èµ¢®¿½ ª«ÔÁ®°¬»¯È½Á¨«ÂH� ÔÕ®°¶Á¾¿®°±²¯ÈÀíÂö�¸�®º¶Á¬¢±È½ ¨«Í¢®Ó¸ ¬êÀÚ®°è|½ ª«×»½ ±²¨«¶ÁÍ»³©¶ ¼´½ ª«ª Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³©¶ ¼Å¶Õ¯È¸�®¹¯©½ ±©¾¿¶Î³ð±�¦ a Fxå�ꨫͻÂî�·´®ÖÍ¢®°®Ó¸ Ê ¤ � � ��z»·Ë®�Ï¢¨ÐÂÒÑ,� ±È¶î¬ ®Ö±Èµ¢®�½ ª«ÔÁ®¹¬¢¯È½Á¨«ÂH� ÔÕ®°¶Õ¾º®°±²¯ÈÀºÂ°¶�¸�®�¶Á¬�±Ò½ ¨«Í¢®¹¸í¬êÀí½Áª­ª�®¹è ½Áª­× ½|±²¨«¶ÁÍ ³¶ ¼¦Ïx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª«³�¶Á¼ ¶Õ¯È¸¢®°¯�½|±�¾¿¶Î³ð±%¦ a F a ��z»½ÁÍ»¸í±²µê×»³�³È½|±È¨«³�¼�À�U˶ÕÍ»¸�¨­±²¨«¶ÁÍþßÁå«{é¶Ì³È½|±²¨Ð³�¼�À�U˶ÁÍ ¸�¨Ç±È¨­¶ÕÍ ¡ z�·´®Í¢®¹®¹¸ù ïÛv�ºÝ 8 ¦Îå ¤ ®�ÑêÍ¢¶|· ¼�¯²¶Õ¾ ±Èµ¢®�Ï¢¯È¶ÁÏx®°¯²±²¨«®¹³�¶ ¼ü½ ª«ÔÁ®¹¬¢¯Ò½ ¨ÐÂN� ÔÁ®°¶Õ¾¿®Ã±²¯ÈÀîÂö�¸�®Ó³?z ±²µ»½ ±���µ ½Á³�¸�¨Ð³�±È½ Í Âî ½ ±ª«®¹½Á³�±�ÊÉá¦tá�F�áB� å|�¢¯È¶Á¾ ±Èµ¢®�ÂÒµ¢¶Á¨ÐÂ ¼�¦}zꨭ±t¼�¶Áª«ª­¶|·�³Å±²µ ½|±�ÊÌá¦�á�F�áB� 8 ¦Îå|� ¨­Í»½Áª­ª«Àbzê±È¶¿ÔÁ®Ã±QU˶ÁÍ ¸�¨Ç±È¨­¶ÕÍ�Rzη´®�Í¢®¹®¹¸¿±È¶ èÁ®¹¯²¨­¼�Àº±²µ»½ ±Õ ïÛ Ê Ý a  ïÛS��Ý 8 Êøå|��¨­Í»Â°®9 ïÛ Ê Ý�Þ Ê á©¦üávF̽ Í»¸, ïÛS��Ý�Þ Êºá2��zαȵ¢¨«³�½Á¾º¶Õ×¢Íα±²¶îèÕ®°¯È¨Ç¼�Àê¨«Í¢Ô ±²µ»½ ± � Êïá���á¦�á·F 8 Ê ·tµ¢¨«Âҵƨгt®°¯Î×¢¨«è|½ ª«®°Íα�±²¶îèÕ®°¯È¨Ç¼�Àê¨«Í¢Ô ±Èµ»½|±%¦ + ÊïáK�´á¨Fx嫬´×�±�¨«Íï¼v½ÁÂñ¦�¨Ð³tª«®¹³È³´±²µ»½ÁÍïµ ½ ª­¼z±²µ»®�� � ��å:{�µê×»³�Û Ê ÷[� Ý�½Õ³tÂÒµ¢¶Õ³²®°Íƽ ¬x¶|èÁ®©ÔÁ¨«èÁ®�½ÁÍ´¦°� ®°¯È¯²¶Õ¯t� Âöկ²¯È®¹Âñ²¨«Í¢Ô�Âö�¸�®Ö¼�¶Õ¯q�ºåx ³�½ºÂ°¶Á¯È¶Áª«ª«½Á¯²À¿·´®�³�®¹®©±²µ»½ ±�·Ë®ÖÔÁ®°±�½ºÏ¢¯²®°±�±ðÀɸ¢®¹Âî¹Íα�¸�®¹Â°¶ê¸¢¨­Í¢Ô̽Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ¼�¶Á¯�½Áª­ÔÕ®°¬¢¯Ò½ ¨ÐÂN� ÔÁ®¹¶Á¾¿®Ã±È¯²À¿Âö�¸�®Ó³?zÂöկ²¯È®¹Âñ²¨«Í¢Ô�½ ¬x¶Á×¢± Û�Ê á��éá�F�Ý ï � ®¹¯²¯È¶Á¯Ò³°å � ¶|·´®°èÁ®¹¯°zÁ¨Ç±�¸�¶ê®¹³üÍ»¶ ±´¸¢®¹Âö�¸�®�×¢Ïî±²¶ µ»½ ª­¼�±²µ¢® ¾º¨«Í¢¨«¾ ×¢¾ ¸�¨Ð³�±È½ Í Âîbz³²¨­Í»Â°®�±Èµ¢® ¸�¨Ð³�±È½ Í Âî ¨Ð³ ÊÚá�� ½ Í»¸Ú·´® ½Á¯²® ¶ÁÍ¢ª«Àï°¶Á¯È¯²®ÓÂæ±È¨­Í¢Ô Û�ÊÚá��tá'F�Ý ï � ®¹¯²¯È¶Á¯Ò³¹å�çz½|±È®°¯©¨­Í ±²µ¢®¿ÂöÕ×¢¯È³²®�·´®·t¨«ª­ªz³²®°®�½º¬x®Ã±�±È®°¯�½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾Æ嬴®Ã¼�¶Õ¯²®Ì°¶Áͻ°ª­×»¸¢¨­Í¢ÔƱȵ¢¨Ð³ ³²®¹Âæ±È¨­¶ÕÍizz·´®î¾¿®°ÍᲨ«¶ÁÍ�¶ÕÍ¢®î¾¿¶Á¯È®Ì°½Õ³�®î·tµ¢®¹¯²®¿±Èµ¢®É½Á¬»³ð±È¯È½ÕÂæ±�¸�®ÓÂö�¸�¨«Í¢Ô ½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾Ï¢¯È¶|èꨫ¸�®Ó³Ë½ÁÍɨ«Í»³²Ï¢¨­¯Ò½|±È¨­¶ÕÍ̼�¶Õ¯�½º¸�®ÓÂö�¸�¨«Í¢Ôº½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾Æå½{�µ»¨«³´¨Ð³´±²µ¢®Ö°½Õ³�®©¶ ¼�±Èµ¢®ÐU˵¢¨«Í¢®¹³²®���®°¾î½ ¨«Í»¸�®¹¯@U˶�¸�®Ó³?z¸�®Ó³²Â°¯²¨«¬ ®Ó¸ÉÍ»®H¦ê±¹å

è � sD�é{ôOÓ{bäÉ{�� !»sG�R¹é{Îy è h?¹ {7OÕ� {�µ¢®�U˵¢¨«Í¢®Ó³�®��t®°¾î½ ¨«Í»¸�®¹¯>U˶�¸�®Ó³Å½ ¯È®tÍê×¢¾ ¬x®°¯[� ±²µ¢®¹¶Á¯È®Ã±²¨ÐÂ�°¶ê¸¢®¹³Å¸¢®Ãػ͢®Ó¸½Á³´¼�¶Õª­ª«¶|·�³ �

ñ �é¨=¦ÉÏ¢¯È¨«¾º®Ó³%i - ÷ �°�?� ÷$i � ³²×»Âҵﱲµ»½ ±?i - + i / + ç<ç<ç + i �ñ x �ª<HK]K?0°V}< ¨«³t½ÁÍ飼Íα²®¹ÔÁ®°¯ X �1Ô � �?�°� y á ßHÖ�·tµ¢®¹¯²®�y L �æ!J - i æ åñ {�µ¢®Ö®°Í»Â°¶ê¸¢¨­Í¢Ô¿¶Á¼ X ¨Ð³´±²µ»®�èÁ®¹Âñ²¶Õ¯ (GX Ûv¾¿¶ê¸Åi - Ýæ÷ �°�?� ÷ X Ûv¾¿¶ê¸ i � Ý * å

¬´À ±Èµ¢®�U˵»¨­Í¢®Ó³�®~�t®°¾î½ ¨«Í»¸�®¹¯e{�µ¢®¹¶Á¯È®°¾BzÁ¯È®¹³²¨Ð¸�×¢®¹³Å¶ ¼ X ¾º¶�¸�×»ª­¶ 0�2RT º¶Á¼�±²µ¢®�ÊÚÏ»¯²¨«¾¿®¹³°zÕ³²×T;ÌÂî¹³ü±²¶º³�Ïx®¹Â°¨Ç¼�ÀX å7{�µê×»³�³²Ï ®ÓÂè­¼�Àꨭ͢Ôƨ­±È³Ö¯È®¹³²¨«¸¢×¢®¿¾º¶�¸�×»ª­¶ïÊ Ï¢¯È¨«¾º®Ó³?zz¾¿½ÁÑÁ®Ó³�±Èµ¢®Ì½ ¬x¶|èÁ®º½ï¯²®Ó¸�עͻ¸¢½ÁÍα©®¹Í»Âö�¸�¨«Í¢Ô»åF{�µ¢¨Ð³Ö¨«³Í¢¶Á±�¶ÁÍ¢®î¶Á¼´¶Õ×¢¯�×»³²×»½ ªÅ½Áª­ÔÕ®°¬¢¯Ò½ ¨ÐºÂö�¸�®¹³�z ¨­Íþ¼v½ÕÂæ±�¨­±�¨«³�Í¢¶ ± ®¹èÁ®¹Í ª«¨­Í»®¹½ ¯�� � ¶|·Ë®¹èÁ®°¯\z�¶ÕÍ¢®î°½ Í�½ÁϢϢª«À~¶Á×»¯×»³²×»½ ª»Í¢¶ ±È¨­¶ÕÍ»³ü¶Á¼�¸�¨Ð³�±È½ Í Âîbzή°¯È¯È¶Á¯[� ¸�®°±²®ÓÂæ±²¨«¶Áͺ½ Í»¸î°¶Á¯È¯²®ÓÂæ±È¨­¶ÕÍ ±È¶Ö±²µ¢¨Ð³Å°¶ê¸¢®Áå ¤ ®�Í¢¶ ±È®�±²µ¢®©Âö�¸�®tµ»½Õ³ü¸�¨Ð³ð±Ò½ Í»Â°®ÊþáQ a ß Û ³�¨«Í»Â°®í³²Ï ®ÓÂè­¼�ÀΨ«Í¢Ô ±²µ¢®í¯²®Ó³�¨Ð¸�×¢®Ó³ ¾¿¶�¸�×¢ª«¶�ÂãÏ¢¯È¨­¾¿®¹³°zü³²Ï ®ÓÂè­Ø»®¹³ ±²µ¢®ï¾¿®¹³È³²½ÁÔÁ® Ýæå���¶ ¶ÕÍ¢®í¹½ Í ½Õ³±²µ»®�¯Î×¢®Ó³ð±È¨­¶ÕÍ ��¨«³º¨­±îÏ ¶Î³²³²¨­¬»ª­®É±²¶þÂöÁ¯È¯È®¹Âæ±ÆÛ�Êþá Â¢Ý ï � ®¹¯²¯È¶Á¯Ò³°åÎ{�µ¢®íØ»¯Ò³ð±î¸�®¹Â°¶�¸�¨­Í»Ô ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ·´½Õ³ ÔÕ¨­èÕ®°Í¬êÀù­ ½ Í ¸�®°ª«¬»½ ×»¾Ô õ » Ö å çz½|±È®°¯Ö·´¶Á¯ÈÑï¶Á¼´§©¶ÁªÐ¸�¯È®°¨ÐÂÒµiz��t¶ÁÍLz�½ Í»¸��ê×»¸¢½ÁÍËÔ ¡ Í�Öü³²µ¢¶|·´®¹¸Úµ¢¶|· ±²¶ï¨­Íα²®¹¯²Ï»¯²®°± ±Èµ¢¨«³½ ª«ÔÁ¶Õ¯²¨­±²µ»¾ ½Á³Ö½ï¯²®¹ª«½ ±²¨«èÁ®º¶ ¼Å±Èµ¢®Ì½ ¬ ³ð±È¯È½ÕÂæ±�¸�®¹Â°¶ê¸¢¨­Í¢ÔÚ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ÔÁ¨«èÁ®¹Í~µ¢®¹¯²®Õå7{é×¢¯ÈÍ»³Ö¶Á×�±�¬x¶ ±Èµ ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾î³Âöկ²¯È®¹Âñ´³²ª­¨«ÔÁµÎ±Èª­À®¹³È³´±²µ»½ÁÍ ÛvÊÉá�Â¢Ý ï � ®°¯È¯²¶Õ¯È³Å¨­ÍïÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áªx±²¨«¾º®Dz ±Èµ¢¨«³�·�½Á³ËØD¦�®Ó¸ÉªÐ½|±È®°¯�¬êÀɧ©×¢¯²× ³�·�½ ¾¿¨Sz��½Áµ»½ ¨Sz�½ Í»¸��ê×»¸¢½ÁÍ Ô �b��Öø×»³²¨«Í¢Ô̱ȵ¢®î½ ª«ÔÁ¶Á¯È¨­±²µ¢¾ ¶ ¼£Ô ¡ Í�Öø¨­Í ÂöÁ¾ ¬¢¨«Í»½|±È¨­¶ÕÍ~·t¨­±²µ ½ÁÍ ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ÑÎÍ»¶|·tÍ~½Á³ ±²µ»®)ȧ©®¹Í¢®°¯Ò½ ª«¨«ì°®¹¸�­Ú¨«Í¢¨­¾ ×¢¾ ��¨Ð³ð±Ò½ Í»Â°® x ª«ÔÁ¶Á¯È¨­±²µ¢¾e+ ±²µ»½ ±�·Ë®Ö·t¨«ª­ª�±È½ ª«ÑɽÁ¬ ¶Õ×�±�¨­Íï±Èµ¢®�Í¢®H¦ê±�³²®¹Âæ±È¨­¶ÕÍ�å

ßÕßH�Òß �}�

Page 101: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

E

E E EE2 2 2 2

1

m

x1 x2 x3

y1 y2 y3

xn

yn

rts u wéy|{þ� �x�v�x�|í ͻ°¶�¸�¨­Í»Ôº¨«ÍÚÂöÕͻ°½ ±²®°Í ½|±²®Ó¸É°¶ê¸¢®¹³

r1 r2 r3 rn

Outer Decoding

u1 u2 u3 un

m’

Inner Decoding

rts u wéy|{þ� �x����� ��®ÓÂö�¸�¨«Í¢ÔîÂöÕͻ°½ ±²®°Í ½|±²®Ó¸í°¶�¸�®¹³

ÍÐÍÐñBö ¯ôõQ����÷ùø?ö�ø .°�Ðö�����ÒYõqö���Ò½õq÷ .°��÷�õQÔ

¤ ®©Í»¶|·�¾¿¶|èÁ®©¶ÁÍí±²¶î½ Íí®°ª«®°ÔÕ½ÁÍα�³²¶Áª«×�±²¨«¶ÁÍɼ�¶Á¯�±Èµ¢®Öעͻ½ ¾ ¬¢¨«ÔÁ×¢¶Õ×»³�¸�®¹Â°¶ê¸¢¨­Í¢ÔºÏ¢¯È¶Á¬¢ª«®°¾�¼�¶Á¯t³�¶Õ¾¿®�¼v½Á¾º¨«ª«¨­®Ó³�¶ ¼ÂöÕͻ°½ ±²®¹Í»½|±È®¹¸ïÂö�¸�®¹³¹åøç�®°±�×»³t³ð±Ò½ ¯²±�¬êÀ̯²®Ó°½Áª­ª«¨­Í»ÔºÂ°¶Áͻ¹½|±²®¹Í»½|±È®¹¸ïÂö�¸�®Ó³°å

è h�� Z !��¹{ô�·!��¹{ô¹ è h?¹ {7OÕ� §©¨­èÕ®°Íë½ÁÍ Ô Êø÷]Â�÷Èù�Ö¶µ�¶Õ×�±²®¹¯ÚÂö�¸�®1� - ·t¨­±²µ ®°Í»Â°¶ê¸¢¨­Í¢Ô ¼�עͻÂñ²¨«¶ÁÍ :�- ½ Í»¸�½ÁÍÔ Ê / ÷] / ÷²ù / Ö , ¨«Í¢Í¢®¹¯�°¶�¸�®�� / z�·t¨Ç±Èµí®¹Í»Âö�¸�¨«Í¢Ô ¼�עͻÂñ²¨«¶ÁÍ : / z�·tµ»®°¯È®=� " ��� zê±²µ¢®¹¨­¯t°¶Áͻ¹½|±²®¹Í»½|±È¨­¶ÕÍiz�¸�®°Í»¶ ±²®Ó¸� - ; � / z ¨Ð³t±Èµ¢®,Ô Ê�Ê / ÷]ÂR / ÷²ùÎù / Ö , °¶�¸�®�¶Á¬¢±È½ ¨«Í¢®Ó¸Ú½Á³�¼�¶Õª­ª«¶|·�³ � �αȽÁ¯�±�·t¨­±²µ ½¿¾º®Ó³²³È½ ÔÕ® � �BÅ �µ ½ Í ¸Æ®°Í»Â°¶ê¸¢®¨­± ×»³²¨­Í»Ô : - ±²¶ÉÔծñ ½ÉèÁ®ÓÂæ±²¶Õ¯l� ( : - ÷ �?�?� ÷|: �+* z ·tµ»®°¯È®Ð: æ �dÅ µ åqÏ�¶|·�z èꨫ®°·t¨«Í¢Ôî±Èµ¢®�: æ ® ³�½Õ³�®¹ª­®¹¾º®¹Íαȳ ¶ ¼Å � �, ®¹Í»Âö�¸�®©±²µ»®°¾¤×»³�¨«Í¢Ô : / ±È¶îÔÁ®°±l� ( � - ÷ �?�?� ÷t� ��* ·tµ¢®¹¯²®�� æ ��Å � �, ½Á¸í±²µ¢®�®¹Í»Âö�¸�¨«Í¢Ô¿¶ ¼ � å�ÛS�ê®°®�½Áª«³²¶� ¨­ÔÕ×¢¯È®ºßÕßÁå«ßÁå ݧ©®Ã±²±²¨«Í¢Ôþ³�¶Õ¾º®É¯²®Ó½Á³²¶ÁÍ»½Á¬¢ª­®Ì½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾î³�¼�¶Õ¯º¸�®ÓÂö�¸�¨«Í¢Ô °¶Áͻ¹½|±È®°Í»½ ±²®¹¸�°¶�¸�®¹³ ¨«³ Í¢¶Á±º³²¶~µ»½Á¯È¸Øzø׻ͻ¸�®°¯¿³²¶Á¾¿®¯È®¹½Á³²¶ÁÍ ½ ¬¢ª«®î½Á³È³�×¢¾¿Ï�±È¨­¶ÕÍ»³¹å��ê×»ÂÒµ�½ÁÍþ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ·´¶Á×»ª«¸ ±È½ÁÑÁ®Ì½Æ¯È®¹Â°®°¨«èÁ®¹¸ èÁ®ÓÂæ±È¶Á¯ y�I(�y - ÷ �°�?� ÷ y ��* z¦·tµ¢®°¯È®y æ ��Å^� �, ½ÁÍ»¸ ¸�®ÓÂö�¸�® ±²µ¢®¹¾ ¨­Í~±ð·Ë¶É³�±²®¹Ï»³°zx¨«ÍêèÁ®¹¯�±È¨­Í¢Ôɱ²µ¢® ®°Í»Â°¶�¸�¨­Í»Ôí³�±²®°Ï ³°å��ê¶íØ»¯È³�± ¨­±Ö·Ë¶Õ×¢ª«¸Ú¸¢®¹Âö�¸�® ±²µ»®y æ ® ³ ¨­Í»¸¢¨­èê¨Ð¸�×»½ ª«ª«ÀƱ²¶Ì±Èµ¢®°¨«¯©Í¢®¹½Á¯²®Ó³ð±ÖÂö�¸�®°·´¶Á¯Ò¸¢³¹åq�¢¶Õ¯�åq�ËÔ Ê5ÖSz�ª«®Ã± : / ÛSe æ Ý�¬ ® ±²µ¢®¿Âö�¸�®¹·Ë¶Õ¯È¸Æ¶Á¼e� / Í¢®Ó½ ¯È®¹³�±±²¶,� æ z ·tµ¢®°¯È®�·´®�èΨ«®°··e æ �BÅ µ ½Á³�½ÁÍÆ®°ª«®°¾¿®°Íα�¶Á¼½Å � �, å�Ï�¶|· ·Ë®�±²¯È®¹½|± wΰ( e - ÷ �?�°� ÷Ne ��* ½Á³�½ÌÂöկ²¯È×¢Ï�±È®¹¸Âö�¸�®¹·Ë¶Õ¯È¸É¶ ¼«� - ½ Í»¸ï¸�®¹Â°¶�¸�®�¨Ç±�× ³�¨«Í¢Ô¸�®¹Â°¶ê¸¢¨­Í¢Ô̽Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ¼�¶Á¯ :£- å�ÛS�ê®°®�� ¨­ÔÕ×¢¯È®ºßÕßÁå � å Ý� ¨­¯Ò³�±°z�ª­®°±Ì×»³îÍ¢¶Á±²®Æ±Èµ»½|±Ì¼�¶Õ¯¿±²µ¢® ÂöÁÍ Â°½|±È®°Í»½ ±²®Ó¸ °¶ê¸¢®¹³î·´®Úµ»½ èÁ®Ú°¶ÁÍ»³²¨«¸¢®°¯È®¹¸ ³�¶ ¼v½ ¯ Ûv�¢¶Õ¯²Í»®°À °¶�¸�®¹³î½ÁÍ»¸Ê ×»³ð±È®¹³²®°Í Âö�¸�®¹³ÒÝNzű²µ¢®Ú½Á¬ ¶|èծɨгº½ÕÂæ±È×»½ ª«ª­À�®<;ÌÂè«®°Íα¹å �t®¹Â¹½ ª«ªË±Èµ»½|±î¨«Íã±Èµ¢®¹³²®Ú½ Ï¢Ï¢ª«¨Ð°½|±È¨­¶ÕÍ»³ ±²µ¢®Æ¶Á×¢±²®°¯î°¶ê¸¢®¨Ð³�½ï·Ë®¹ª­ª=� ³�±²× ¸�¨­®Ó¸þÂö�¸�®Ì³²×»ÂÒµ�½Á³©±²µ»®b�t®°®Ó¸�����¶Áª«¶Á¾¿¶ÁÍþÂö�¸�®î·t¨­±²µ�®<;î°¨­®¹Íα ¸�®¹Â°¶ê¸¢¨­Í¢ÔÚ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾î³°å�¢ Í ±²µ»®

ßÕßH�Òß � ß

Page 102: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

¶ ±Èµ¢®°¯¿µ»½ÁÍ»¸ ±²µ¢®Æ¨«Í¢Í¢®°¯î°¶ê¸¢®ï¨Ð³¿Í¢¶Á±º·´®°ª«ª*� עͻ¸¢®°¯Ò³ð±È¶Î¶�¸�z ±²µ¢®Æ¶ÁÍ»ª­Àþ±Èµ¢¨­Í»Ô ·´®ïÑÎÍ»¶|· ½ ¬x¶Á×�±î¨­±î¨«³º±Èµ»½|±î¨­±µ»½Õ³�Ôնζ�¸Æ¾¿¨«Í¢¨­¾ ×¢¾ ¸�¨Ð³ð±Ò½ Í»Â°® Ï¢¯È¶ÁÏx®°¯²±²¨«®¹³¹å£��¶É¨­±©¨Ð³�Í»¶ ± ¯È®¹½Õ³�¶ÕÍ»½ ¬»ª­®Ö±È¶É®H¦�Ïx®¹Âñֽí³�¶ÕÏ¢µ¢¨Ð³ð±È¨«Â¹½|±²®Ó¸Ú¸�®¹Â°¶�¸�¨­Í»Ô½ ª«ÔÁ¶Õ¯²¨­±²µ»¾ ¼�¶Õ¯�±Èµ¢®º¨­Í¢Í»®°¯ÖÂö�¸�®Áå�¬´×�±©±²µ¢®¹Í~±Èµ¢®º¨­Í¢Í»®°¯ÖÂö�¸�®¹³©½ ¯È® ³²¶í³²¾î½ ª«ªz±Èµ¢®¿¬¢¯È×�±²®?� ¼�¶Õ¯È°® ¸�®¹Â°¶�¸�¨­Í»ÔɶÁÍ»ª­À±È½ÁÑÁ®Ó³øÏ ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áª�±²¨«¾¿®�¨«Í¿±²µ¢®�ª«®°Í»Ô ±²µî¶Á¼�±²µ¢®©ÂöÁÍ Â°½|±È®°Í»½ ±²®Ó¸ºÂ°¶�¸�®bzγ�¶�·´®�¸�¶ÕÍi® ± 2:<�<�4 ½�³²¶ÁÏ¢µ¢¨Ð³�±²¨Ð°½|±È®¹¸º¨«Í¢Í¢®°¯¸�®ÓÂö�¸�¨«Í¢ÔÚ½ ª«ÔÁ¶Á¯È¨­±²µ¢¾Æå7��¶É±Èµ¢®î®°ÍᲨ«¯È®º¸�®ÓÂö�¸�¨«Í¢ÔÆÏ¢¯È¶ê°®¹³È³Ö¸�®¹³ÈÂïȨ­¬x®¹¸ ½ ¬x¶|èÁ® ±È½ÁÑÁ®¹³ ±È¨­¾¿®îÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª¦¨­Í ±²µ»®ª«®°Í¢ÔÁ±²µÆ¶ ¼é±²µ¢®�°¶Áͻ¹½|±²®¹Í»½|±È®¹¸ïÂö�¸�®}zê¼�¶Á¯t±Èµ¢®©±ðÀÎÏ»¨«Â¹½ ªz°¶ê¸¢®¹³¹å� ¶|·´®°èÕ®°¯\z ±²µ¢¨Ð³Å¸¢¶Î®Ó³�ÍL® ±ÅÔÕ¨­èÕ®t×»³ü½ÁÍ¿½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ¸¢®¹Âö�¸�¨«Í¢Ô�עϢ±²¶�µ»½ÁªÇ¼x±²µ»®�¾¿¨­Í¢¨«¾ ×»¾ ¸�¨Ð³�±È½ Í Âî�¶Á¼ ±Èµ¢®�ÂöÕͻ°½ ±²®?�Í»½ ±²®¹¸~Âö�¸�®Å� ú ± ¾î½ Àï¶ÁÍ¢ª«ÀÚ¸�®¹Â°¶ê¸¢® �_� �¸ ®¹¯²¯È¶Á¯Ò³°å ¤ ® ·´¶ÁÍL® ±©Ï¢¯²¶|èÕ®Ö±²µ»½ ± ¨­±Ö¹½ Í °¶Á¯È¯²®ÓÂæ± ³²¶Ì¾î½ ÍêÀÆ®°¯È¯²¶Õ¯È³°z¢¶Õ¯±²µ ½|± ¨­±�°½ ÍL® ±ÖÂöÁ¯È¯È®¹Âæ±�¾¿¶Õ¯²®Õåq¬´×�±�±È¶í³²®°® ½ÌÏ¢ª«½Á×»³²¨­¬¢¨«ª«¨Ç±ðÀÚ½ ¯ÈÔÁ×»¾º®¹Íα°zxÍ¢¶ ±È®�±²µ»½ ± ±È¶ÉÔծñ ½í¸�®¹Â°¶ê¸¢¨­Í¢Ô̼v½ ¨«ª­×¢¯È®bz±²µ»®�½Á¸�èÕ®°¯Ò³²½Á¯²Àº¶ÁÍ¢ª«À̵»½Õ³´±²¶¿®°Í ³�×¢¯È®�ù ï � ¶ ¼z±Èµ¢®�³²Àξ ¬ ¶Õª«³we æ Ò : æ ½ Í ¸Ì±È¶ºÔծñ�½ÁÍÎÀ̳²×»ÂҵƸ�®¹Â°¶�¸�¨­Í»Ôº®¹¯²¯È¶Á¯´¼�¶Õ¯±²µ»®�¨«Í¢Í¢®°¯´¸�®¹Â°¶�¸�®°¯Ë¨Ç±´¾¿½ À ¶ÁÍ¢ª«ÀºÍ¢®°®Ó¸¿±²¶"¤ ¨­ÏÉù / ï � ³²Àξ ¬ ¶Õª«³ü¶ ¼�±²µ»®�¨«Í¢Í¢®°¯´½ ª«Ï¢µ»½Á¬ ®°±¹å|{�µê×»³Å½Ö±È¶ ±Ò½ ª»¶Á¼�ùÕù / ï �®°¯È¯È¶Á¯Ò³ø¾î½ Àºª«®¹½Õ¸¿±²¶º½ ¸�®ÓÂö�¸�¨«Í¢Ô�¼v½Á¨­ª«×¢¯È®Áå|¬´®°ª«¶|· ·Ë® ·t¨­ª«ª�³�µ¢¶|·¡½ Âê«®°èÁ®¹¯Ë½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ·tµ»¨«ÂÒµíÔÁ®Ã±Ò³Å½Á¯²¶Õעͻ¸¿±Èµ¢¨«³Ï¢¯È¶Á¬¢ª«®°¾ ·t¨­±²µÌ¯È®°ªÐ½|±È¨­èÕ®°ª«À ª«¨Ç±²±²ª«® ®?¦Î±È¯È½Ö¨«Í�¼�¶Õ¯²¾î½|±È¨­¶ÕÍ̽ ¬x¶Á×�±Ë±²µ¢® ¶Á×�±È®°¯´¸�®¹Â°¶ê¸¢¨­Í¢Ô ½ ª«ÔÁ¶Á¯È¨­±²µ¢¾ÆåY{�µ¢¨«³Ë½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾¨Ð³¦±²µ¢®�Ä {ô� {Îy�! é s$ÃÕ{ô¹ sG� sv� w·� �ïsGOÇ�°!�� Z {£Æ Ä� ��É~�ï{ Z h?¹ sG� uv¶ é u:h»y|sG� � � z ¸�×¢®�±È¶��¢¶Á¯ÈÍ¢®¹À,Ô �}�\ÖéÛ ³�®¹®½ ªÐ³²¶BÔ �3��ÖÜÝÃåê�ëAì0írîiï ðzì7ñ ů²¶|èÕ®�±²µ»½ ±Å±Èµ¢® ¸�®ÓÂö�¸�¨«Í¢Ô ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ¶Á×�±Èª­¨«Í¢®¹¸É½ ¬x¶|èÁ®�¸�¶ê®¹³Ë¨«Í»¸�®°®Ó¸ÌÂöկ²¯È®¹ÂñŽ|±´ª­®Ó½Á³�±©Ûvù�á ß ÝÃÛvù / áßÓÝ ï �º®°¯È¯²¶Õ¯È³¹å

�ü�ø�S±���� ¡�z���t���[¸@ÿ ���¢�¢�Å�»�1³|¸�� ���R³¦��à��¢�z�ç�®°±�×»³ ³ð±Ò½ ¯²±�¬êÀíª«¶ê¶ÁÑꨭͻÔ̽|±�±Èµ¢® ¸�®ÓÂö�¸�¨«Í¢Ôɽ ª«ÔÁ¶Õ¯²¨­±²µ»¾ ·´®�µ»½ èÁ®Ö¼�¶Õ¯�±Èµ¢®�¶Á×¢±²®°¯©Âö�¸�®Õå ¤ ® ½Áª­¯È®¹½Õ¸�Àɳ²®°®¹¾ ±È¶¬x® ¾î½ Ñꨫ͢Ôî¼�×¢ª«ª¦×»³²® ¶Á¼ü¨Ç±Dz ·´® ½Õ³²³²×¢¾¿® ¨­±�°½ Í ÂöÁ¯È¯È®¹Âæ± Û ùºá¡ßÓÝ ï � ®°¯È¯È¶Á¯Ò³?zx½ Í»¸Ú¨­±�°½ ÍL® ±ÖÏ ¶Î³²³²¨«¬¢ª­ÀÆÂöկ²¯È®¹Âñ¾¿¶Á¯È®�®°¯È¯È¶Á¯Ò³øעͻ½Á¾ ¬¢¨«ÔÁ×¢¶Õ×»³²ª­ÀÕå½{é×¢¯ÈÍ»³Å¶Õ×�±°zÕ±²µ»®°¯È®�¨Ð³Å¶ÕÍ¢® ½Õ¸¢¸�¨­±²¨«¶ÁÍ»½Áª¢¼�®¹½ ±²×¢¯È®�¶Á¼�±²µ¢®©¸�®¹Â°¶�¸�¨­Í»Ô ½ ª«ÔÁ¶Õ¯²¨­±²µ»¾ ¼�¶Õ¯±²µ»® ¶Õ×�±²®¹¯©Â°¶ê¸¢® ±Èµ»½|±�Âöվº®Ó³�¨«Í�¯Î×¢¨­±²®ºµ»½ÁÍ»¸�ÀÁå�{�µ»¨«³ ¨«³ ±Èµ¢® ¼�®Ó½|±È×¢¯²® ±²µ ½|±Ö¨Ç±�°½ÁÍ~¸�®¹½Áª¦·t¨Ç±Èµ~®°¯Ò½Á³²×¢¯È®¹³�¯Õ×»¨Ç±È®Í»½ ±²×¢¯Ò½ ª«ª­Àí½ Í»¸í¬ ®¹Í¢®ÃØ»±�¼�¯²¶Õ¾�¨­±¹å

gÖy3h+Neh�OÓs��ÓsvhP� �x� � � Ñ È <H> � Ì]<�0�2 Ô Êø÷²Ê á ù a ßÁ÷Èù�Ö , -�<�<]40/215G�;=G3�ªG32 P�G°4}<°@º1îM\ZbZRG�K?< y � ÛJÅ , ç ÿ �b�|Ý �' K�0¨$3<]P?>�G3I�4}<HI ' $3<�4FE�I[G3� 01P�G\4b<?c(G3I[4 Z ��� Ì?T � <HI[03KNM^I[<NKB032:4�ì�<?INI[G�I�KH@ ë @J<°@ XÐ� ÿ åH� 0 æ �b��� � 032:4� ÿ åH� C?æ Ò 0 æ 03254 0 æ Ò �b��� ì?@7A5CR<H2 Z P�032ÎP�G3�qZ:M^>�<]4�<vOQP ' <H2î>�;UTaV ' $3<H2 y Xl��X ìnZ5I[GA$ ' 4b<�4 � a � ì + ù @gÖy3hih:j {�µ¢®îÏ¢¯È¶ÁÏx¶Õ³²¨Ç±È¨­¶ÕÍ ¨Ð³�³�±²¯Ò½ ¨«ÔÁµÎ±�¼�¶Õ¯²·�½ ¯Ò¸Øz�ÔÁ¨«èÁ®¹Í ±²µ¢®î¶Õ¬»³�®¹¯²è|½ ±²¨«¶ÁÍ ±²µ»½ ±�±²µ¢®Ì°¶�¸�®,�9�Szz¶Á¬¢±È½ ¨«Í¢®Ó¸ ¬êÀÏ¢×¢Í Âæ±²×»¯²¨«Í¢Ôa� ¶Áͺ±²µ¢® Âöê¶Á¯Ò¸�¨«Í»½|±È®¹³ ·tµ¢®°¯È®�±²µ»®°¯È®�½ ¯È®´®¹¯È½Õ³�×»¯²®Ó³?z|¨Ð³ü½ Í�Ô ÊÖá��Õ÷²Ê©áîù a ßÕ÷²ùÅá��?Ö���®°®¹¸^���ê¶Õª­¶Õ¾¿¶ÁÍÂö�¸�®�½ÁÍ»¸í±²µê×»³�Ûvù á¹��á ßÓÝ ï � ®¹¯²¯È¶Á¯Ò³�°½ÁÍí¬x®�Âöկ²¯È®¹Âñ²®¹¸É®�;ÌÂè«®°ÍαȪ­ÀÕå� ¶|· °½ Íº·´®Ë×»³²®´±²µ¢®�¶ÕÏ�±²¨«¶ÁÍ ±²¶�¸�®ÓÂêн ¯È®Å®°¯Ò½Á³²×¢¯È®¹³�� ú Í ±²µ»®´Ï»¯²¶�Âîӳ²³ ¶Á¼ ¸�®¹Â°¶�¸�¨­Í»Ô ±Èµ¢®�¨­Í»Í¢®°¯ü°¶ê¸¢®bz ·´®Ë¨«ÔÁÍ»¶Á¯È®¹¸³²¶Á¾¿®�¶Á¬êèꨭ¶Õ×»³ ¨­Í�¼�¶Õ¯²¾î½ ±²¨«¶ÁÍ ±²µ»½ ±ü·´½Õ³ ½ è|½Á¨­ªÐ½ ¬¢ª«®´±²¶Ö×»³¹å ¤ ®tÍ¢¶Á±ü¶ÁÍ¢ª«À ÂöÕ×¢ªÐ¸�Ø»Í ¸ ¶Õ×�±ø±²µ»®´®¹Í»Âö�¸�¨«Í¢Ô�¶Á¼ ·tµ¢¨ÐÂÒµ¾¿®¹³È³²½ÁÔÁ®�·´¶Á¯Ò¸ªe æ ·�½Á³©Â꫶ճ²®¹³�±�±È¶Ì±Èµ¢®Få ±Èµ ¯È®¹Â­èÕ®¹¸Ú¬»ª­¶�ÂÒÑ y3æ z�¬¢×¢±©·´®º½Áª«³²¶ÌÑêÍ¢¶|· µ¢¶|· ¾¿½ÁÍêÀ﮹¯²¯È¶Á¯Ò³tµ»½ èÕ®Û�Ïx¶ ±È®°Íα²¨Ð½ ª«ª«À�Ý�¶�°ÂÃ×»¯²¯È®¹¸Æ¨«Í ®¹½ÕÂÒµÚ¬¢ª«¶êÂÒÑ�å���¶Á¾¿®°µ¢¶|·à·´® ³²µ¢¶Á×¢ªÐ¸Ú¾î½ ÑÕ®�×»³²®�¶ ¼ø±Èµ¢¨Ð³�¨«Í�¼�¶Á¯È¾î½|±È¨­¶ÕÍ�å x Í ½|±²×»¯È½Áª¨Ð¸�®¹½ ¨«³ ±È¶~±È¶ ¸�®ÓÂêн ¯È®í¬»ª­¶�ÂÒÑ�³ ·t¨­±²µ ªÐ½ ¯ÈÔÁ®ÉÍê×¢¾ ¬ ®¹¯¿¶ ¼�®¹¯²¯È¶Á¯Ò³�±È¶ ¬x®Æ®°¯Ò½Á³²×¢¯²®Ó³°å1{�µ¢¨Ð³º·Ë¶Õ¯²Ñ�³ ¶Á×�±¿¯È¶Á×¢ÔÕµ¢ª­ÀÂöկ²¯È®¹Âñ¹å ¤ ®�·t¨«ª­ª ³�®¹®Ö±²µ»½ ± ½î³²¨­¾¿Ï¢ª«®�Ï¢¯È¶Á¬»½Á¬¢¨«ª­¨Ð³ð±È¨«ÂÖ¨«Íα²®¹¯²Ï¢¯È®Ã±Ò½|±È¨­¶ÕÍí¶Á¼ ±Èµ¢® ¸�¨Ð³�±È½ Í Âî¹³�ÔÁ¨«èÁ®�½î¯È¨­ÔÕµÕ±�³�±²¯Ò½|±È®°ÔÁÀ¼�¶Á¯�¸¢®¹Âêн ¯È¨«Í¢Ô ®¹¯È½Õ³�×»¯²®Ó³°å

�ü�ø�S±���± p �D³|¸ ���(µ ��Þ��é� ���z���t���t¸Qÿ ³¦�zÿü�ü�»�ð�D´qµç�®°±©× ³�ØR¦Ú³²¶Á¾¿® Í¢¶ ±Ò½|±²¨«¶ÁÍLz�±²µ»½ ±©·´® µ»½ èÕ®�¬x®°®°Í ¨«Íձȯ²¶�¸�× Âè«Í¢Ôí½Õ³�·´® ·´®°Íα�½ ª«¶ÁÍ¢Ô å£{�µ¢® ¾¿®¹³È³²½ÁÔÁ® èÕ®¹Âñ²¶Á¯ ¨«³� zx¨Ç±Ò³©®°Í»Â°¶ê¸¢¨­Í¢Ôïעͻ¸¢®°¯ ±²µ¢®º¶Á×�±È®°¯ÖÂö�¸�®º¨«³£� ( : - ÷ �°�?� ÷|: � * z�·tµ»®°¯È®Ð: æ ��źµ¼» Å ���, å�{�µ¢® ®¹Í»Âö�¸�¨«Í¢Ôí¶ ¼

ßÕßH�Òß �W�

Page 103: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

: æ ×¢Í ¸�®°¯©±²µ»® ¨«Í¢Í¢®¹¯Ö°¶�¸�® ¨Ð³£� æ ½ Í»¸ ±²µê×»³ ±²µ¢® ػͻ½ÁªøÂö�¸�®°·´¶Á¯Ò¸Ú¨Ð³£� W( � - ÷ �?�°� ÷t� �+* å�{�µ¢® Í»¶Á¨Ð³�À ÂÒµ»½Á͢͢®¹ªÂöկ²¯È×¢Ï�±Ò³q� ½ Í ¸~½íèÁ®¹Âñ²¶Õ¯ y� (�y - ÷ �?�°� ÷ y �+* ¨«³©¯È®¹Â­èÕ®¹¸�å ¤ ®¿Í¢¶|· ¸�®Ó³²Â°¯²¨«¬ ® ±²µ»®¿¸¢®¹Âö�¸�¨«Í¢Ôƽ ª«ÔÁ¶Õ¯²¨­±²µ¢¾¤¼�¶Õ¯±²µ»¨«³�°¶�¸�®Áå

ä,!+��¹½hî��Q è h�� Z !���Q`�ï{ Z h?¹ {ÎyÄ sn�x{ô��æ©y� (�y - ÷ �?�°� ÷ y �+* åS?�¹{7N ��æ �¢¶Õ¯�å«�1Ô Ê5Ö�z¢Âöվ¿Ï¢×�±²®�e æ ±²µ ½|±�¾¿¨­Í»¨­¾¿¨«ì°®¹³� íÛ : / ÛSe æ Ýæ÷ y3æ ÝÃåS?�¹{7N���æ �ê®°±%¦\�æ ¾¿¨­Í ÿ ù / ï � ÷] ïÛ : / ÛSe æ Ý � y3æ ÝæåS?�¹{7NÍ6?æ �¢¶Õ¯t®°èÕ®°¯ÈÀªå(�ÎÔ Ê5Öz¯È®°Ïx®¹½ ±�±²µ¢®Ö¼�¶Õª­ª«¶|·t¨­Í»Ô �Y¤ ¨Ç±ÈµÆÏ¢¯²¶Õ¬»½ ¬»¨­ª«¨Ç±ðÀ � ¦��æ ï ù / z ³�®°± ¥ æ· �}z�®°ªÐ³�®�³²®Ã± ¥ æ· e æ åS?�¹{7N #gæ ¦®°¯²¼�¶Á¯È¾ ®°¯È¯²¶Õ¯È³�½ÁÍ»¸É®¹¯È½Õ³�×»¯²®Ó³´¸¢®¹Âö�¸�¨«Í¢Ô¿¶ ¼ ±²µ»®�èÁ®¹Âñ²¶Õ¯ �� ( ¥ - ÷ �°�?� ÷ ¥ ��* åS?�¹{7Në}�æ ú ¼ø½¿èÁ®¹Âñ²¶Õ¯ � �Ø��Å �µ ¨Ð³t¶Á¬�±Ò½ ¨«Í¢®¹¸ï¨«Íù�α²®¹Ï��Rz»ÂÒµ¢®ÓÂÒÑî±²¶Ì³²®°®�¨­¼( ïÛ : / ;D: - Û � Ýæ÷ y Ý�màÛ ùÕù / Ý ï � ½ÁÍ»¸¨Ç¼ø³�¶¿¶Õ×�±²Ï¢×¢± � ��å

{�µ¢®�½Á¬ ¶|èÕ®�½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾ Âê«®¹½Á¯²ª«À ·´¶Á¯ÈÑ�³ø¨­Í̱²¨«¾º®�±²µ»½ ±Ë¨Ð³]è¿Û�Ê�Ê / � a ¿ ÛvÊzÝ�ÝNzÕ·tµ¢®°¯È®O¿ ÛvÊzݦ¨«³ü±²µ¢®�±²¨«¾¿®�±È½ÁÑÁ®¹Íº¬êÀ±²µ»®©®¹¯²¯È¶Á¯Ò³´½ Í»¸É®°¯Ò½Á³²×¢¯²®Ó³Ë¸¢®¹Âö�¸�¨«Í¢Ô¿½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾Æå|{�µ¢®©¾î½ ¨«Íí¨Ð³²³²×¢®©¨«³�µ»¶|·�¾î½ ÍêÀî®°¯È¯²¶Õ¯È³Ë¨­±t°¶Á¯È¯²®ÓÂæ±Ò³°å ¤ ®Ö·t¨«ª­ªÂêн ¨«¾¤±²µ»½ ±©¨­±�)²®¹³È³�®¹Íα²¨Ð½ ª«ª­À�+î³²¶Áª«èÁ®¹³�±²µ¢®º×¢Í»½Á¾ ¬¢¨«ÔÁ×»¶Á×»³ ¸�®¹Â°¶ê¸¢¨­Í¢Ôï½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾î³�¼�¶Á¯�±Èµ¢®¿ÂöÁÍ Â°½|±È®°Í»½ ±²®Ó¸ÚÂö�¸�®Áå¤ ®É¸�¶~³²¶Úèꨫ½Ú½ °ª«½Á¨­¾ ±²µ ½|± ¨Ð³�·´®¹½ÁÑ ¨­Íã±²µ»½ ± ¨Ç± ¶ÁÍ¢ª«À ³²µ¢¶|·�³©±Èµ»½|± ±²µ¢®Ì®?¦�Ï ®ÓÂæ±²®Ó¸þÍê×¢¾ ¬x®°¯ ¶ ¼t®°¯È¯²¶Õ¯È³Ö½ÁÍ»¸®°¯Ò½Á³²×¢¯È®¹³Ë¼v½ ª«ª�·t¨­±²µ¢¨«ÍƱ²µ¢®�¸¢®¹Âö�¸�¨«Í¢Ôî°½ÁÏ»½ ¬»¨­ª«¨Ç±ðÀɶ ¼z±Èµ¢®�¶Á×¢±²®°¯�°¶�¸�®Áå

�Å{�� �"!�� �x�v�x� È <?> ¦ æ9  ïÛ y�æ ÷[� æ Ý 03254 ¦ H �æ!J - ¦ æ @ á CD<?2 � ' K�Z ' P4J}<�4�0�>�I[03254bG�� Ì?T ä�!��R¹·h:��Qè h�� Z !���Q`�ï{ Z h?¹ {Îy X >JCR<H2dc(<£CR0A$3<ÇÄí ¦�Ï�Ô�½ <?I[0�KNM^I[<HK ' 2 � a"� ç A ½ <?INI[G3I�K ' 2 � C Ö½m � ¦ ï ù / �

äÉ{�� !¢yiå¥æ Ï�¶Á±²®Ö±²µ ½|±�¨­¼�¦ + ùÎù / ï � zê±²µ¢®�� � �ï½ ¬x¶|èÁ®©¨«³tª«®¹³È³´±²µ ½ ÍÚùî½Á³�¶ÕÍ¢®�·Ë¶Õ×¢ªÐ¸Éµ¢¶ÕÏ ®©¼�¶Õ¯¹ågÖy3hih:j Ï�¶ ±È®©±²µ»½ ±�¨«³�³²×T;ÌÂîӳ´±²¶î½ ¯ÈÔÁ×»® ±Èµ»½|±�¼�¶Õ¯�®°èÕ®°¯ÈÀªå

ůLÔ ®°¯Ò½Á³²×¢¯²®©¨«Í�å ±Èµï°¶Î¶Õ¯È¸¢¨­Í»½ ±²®NÖ � ç° Å¯iÔ ®¹¯²¯È¶Á¯´¨«Í�å ±ÈµÆ°¶ê¶Á¯Ò¸�¨­Í ½|±²®�Ö½m � ¦ æ ï ù / ÷ ÛðßÁßÕå­ß ݽ Í ¸Ì±Èµ¢®°ÍƱȵ¢®�ª­®¹¾¿¾¿½º·t¨«ª­ª�¼�¶Áª«ª­¶|·ë¬ÎÀɪ­¨«Í¢®¹½Á¯²¨­±ðÀ̶Á¼é®H¦�Ïx®¹ÂñȽ|±È¨­¶ÕÍ»³¹å ¤ ®�Ï¢¯È¶|èÁ® ±²µ»¨«³t¨«ÍÆ°½Á³²®¹³¹åºb» ðzì�¼�ñ e æL : æ²� ú ͺ±²µ»¨«³ø¹½Á³²®bz|±Èµ¢®�Ï¢¯²¶Õ¬»½ ¬»¨­ª«¨Ç±ðÀ ¶ ¼x½ÁÍ ®¹¯²¯È¶Á¯ ¨«Í ±Èµ¢®�å ±²µ¿Âöê¶Á¯Ò¸�¨«Í»½|±È®Ë¨Ð³ � ½ Í»¸ ±²µ»®tÏ¢¯²¶Õ¬»½ ¬»¨­ª«¨Ç±ðÀ¶ ¼�½ Í ®°¯Ò½Á³²×¢¯È® ¨«Í~±Èµ¢®ªå ±²µþÂöê¶Á¯Ò¸�¨«Í»½|±È® ¨Ð³ � ¦��æ ï ù / åª��¨­Í»Â°®¾e æ� : æ z�·´®¿½Áª«³²¶ïµ»½ èÁ®y¦ æ� ¦��æ z ½ Í»¸ ³�¶ï·´® Ø Í»¸±²µ ½|±t±²µ»®�ç � �í¶Á¼´ÛðßÕßÁå«ßÓÝ˨гt¨­Í ¸�®°®Ó¸í®\¯Î×»½ ª�±È¶ � ¦ æ ï ù / åºb» ðzì�Â+ñ e æ Ò : æ å ú Í ±²µ¢¨Ð³�¹½Á³²®bz�·´®ÌÂöÕ×¢ª«¸ µ»½ èÕ®¿½ÁÍ ®¹¯²¯È¶Á¯Ö¨«Í ±²µ¢®ªå ±²µ�°¶Î¶Õ¯È¸¢¨­Í»½ ±²®�z ±Èµ¢¨«³�µ»½ Ï¢Ïx®°Í ³�·t¨Ç±ÈµÏ¢¯È¶Á¬»½Á¬¢¨«ª­¨­±ðÀ ß�á � ¦ �æ ï ù / zü·tµ»¨­ª«®É·t¨­±²µ Ï¢¯²¶Õ¬»½ ¬»¨­ª«¨Ç±ðÀ � ¦ �æ ï ù / ·´®ÉÔծñÍ㮹¯²¯È¶Á¯Óå ¤ ®íÍ»®°®¹¸�±²¶ ®H¦�Ï¢¯È®¹³È³�±²µ»®¹³²®¯Î×»½ ÍαȨDZȨ­®Ó³Å½Á³Å½Ö¼�עͻÂñ²¨«¶ÁÍ¼o¦ æ Ûv¯È½ ±²µ¢®¹¯ø±²µ ½ Í¿¦��æ ÝŽ Í»¸¿³²¶�·Ë®tÍ»¶ ±²®�±²µ»½ ±À¦ æ Þ ù / á>¦��æ Ûv³²¨­Í ÂïÛ : / ÛG: æ Ýæ÷ y æ Ý´Þ ïÛ : / Û�: æ ÝÃ÷ : / ÛSe æ Ý�Ý|áa ïÛ y æ ÷ : / ÛSe æ ݲÝ�ÝÃåYÏ�¶|·�·Ë®Ëµ»½ èÁ®ü±²µ»½ ±é±Èµ¢®ËÏ»¯²¶Õ¬»½ ¬¢¨«ª«¨Ç±ðÀÖ¶ ¼x½ Í�®¹¯²¯È¶Á¯é¨«³ ½|±¦¾¿¶Õ³�± � ¦ æ ï ù / áîß½ Í ¸¿±²µ¢® Ï¢¯È¶Á¬»½Á¬¢¨­ª«¨­±ðÀ ¶ ¼z½ÁÍÌ®°¯Ò½Á³²×¢¯È®t¨«³Ë½|±´¾º¶Î³ð± � á � ¦ æ ï ù / å| üª«×¢ÔÁÔÕ¨­Í»ÔÖ±²µ¢®Ó³�® ¨­ÍᲶ ±²µ¢®©ç � �¿¶ ¼ÅÛ�ßÁßÁå«ßÓÝHzÕ½ÁÔÕ½ ¨«Í·´® Ø Í»¸í±²µ»½ ±t±²µ¢®�ç � �í¨«³�¬ ¶Õעͻ¸�®Ó¸í¬êÀ � ¦ æ ï ù / å{�µ¢®ï½ ¬x¶|èÁ®Ìª«®°¾¿¾î½ ¨«¾¿Ï¢ª­¨«®¹³ ±²µ ½|± ±Èµ¢®°¯È®É¨Ð³ Ï ¶Î³�¨­±²¨«èÁ®ÌÏ»¯²¶Õ¬»½ ¬¢¨«ª«¨Ç±ðÀþ½Á³È³�¶�°¨«½ ±²®¹¸þ·t¨­±²µ ±²µ¢®í®°èÕ®°Íα ±Èµ»½|± � µ»½Õ³³²¾¿½Áª­ª�Íê×¢¾ ¬ ®¹¯´¶Á¼z®°¯È¯È¶Á¯Ò³Å½ Í ¸Ì®°¯Ò½Á³²×¢¯È®¹³¹å � ¶|·Ë®¹èÁ®°¯´·´® ¸�¨Ð¸ÉÏ»¯²¶|èÕ®�Í¢¶ ±�½ µ¢¨­ÔÕµíÏ»¯²¶Õ¬»½ ¬¢¨«ª«¨Ç±ðÀ¿¯È®¹³²×¢ªÇ±Óå ¤ ®©·Ë¶ÕÍi® ±¸�¶º³�¶(�Õ¨«Í»³�±²®¹½Õ¸î·´®�·t¨«ª­ª}áð×»³�±�¸�®¹¯È½ÁÍ»¸�¶Õ¾º¨«ì°®�±²µ¢®©½ ª«ÔÁ¶Á¯È¨­±²µ¢¾ ½ ¬x¶|èÁ®t±È¶ Ôծñ˽ ¸�®Ã±È®°¯È¾º¨«Í¢¨Ð³ð±È¨«Â ½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾ ¼�¶Á¯Ë±²µ»®×¢Í»½Á¾ ¬¢¨«ÔÁ×»¶Á×»³t¸�®ÓÂö�¸�¨«Í¢Ô¿Ï¢¯È¶Á¬¢ª«®°¾Æå

ßÕßH�Òß �}¡

Page 104: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

�ü�ø�S±���Ü ¡�������Rµ �[¸����Õ�¢���Ç¡�z���t�����QßÈ�Å��x �e¸��5³ ���L¸l³ ���z� x �t���é�¤ ®Ì·t¨­ª«ªË¸¢®°èÁ®¹ª­¶ÕÏ~±Èµ¢®É¸�®°±²®¹¯²¾¿¨«Í¢¨«³�±²¨ÐÂ̸�®ÓÂö�¸�®¹¯�¨­Íþ±ð·´¶ãÛv³²¨­¾¿Ï¢ª«®ÓÝ�³ð±È®°Ï»³¹å�� ¨«¯È³�± Í¢¶Á±²®¿±²µ ½|± ·´®Ì¸�¨Ð¸�Íi® ± ¯²®Ó½ ª«ª­ÀÍ¢®¹®¹¸ ±²µ»® ¯È½ÁÍ»¸�¶Õ¾ ÂÒµ¢¶Õ¨«Â°®¹³¿¨«Í �α²®¹Ï ¡ ¶ ¼ ä,!��R¹½hî��Q è h�� Z !T��Q`�ï{ Z h?¹ {Îy ¸�¶�Í¢¶Á±ÉÍ¢®¹®¹¸ ±²¶�¨«Í»¸�®¹Ï ®¹Í»¸�®¹ÍÕ±½ Í ¸Ú®H¦�Ïx®¹Âæ±Ò½|±È¨­¶ÕÍÚ¬ ¶Õעͻ¸ãÛ ç�®°¾¿¾î½ ßÕßÁå«ßÁß Ýt½ ªÐ³�¶îµ»¶ÁªÐ¸¢³�¨­¼ø±²µ»®¹³²® ®°èÕ®°Íαȳ ½ ¯È® Âöվ¿Ï¢ª­®°±²®¹ª­ÀƸ�®°Ïx®°Í ¸�®°Íα¹å��ê¶îz ¨«ÍÏ»½Á¯�±È¨«Â°×¢ª«½Á¯°zαȵ¢®Ö¼�¶Áª«ª­¶|·t¨«Í¢Ôî½ ª«ÔÁ¶Õ¯²¨­±²µ»¾ ·Ë¶Õ×¢ª«¸í·´¶Á¯ÈÑɽÁ³�·´®°ª«ª å

h?¹ s��¦{ô¹jQBä,!��R¹½hî��Q è h�� Z !T��Q`�ï{ Z h?¹ {ÎyÄ sn�x{ô��æ©y� (�y - ÷ �?�°� ÷ y � * åS?�¹{7N ��æ �¢¶Õ¯�å«�1Ô Ê5Ö�z¢Âöվ¿Ï¢×�±²®�e æ ±²µ ½|±�¾¿¨­Í»¨­¾¿¨«ì°®¹³� íÛ : / ÛSe æ Ýæ÷ y3æ ÝÃåS?�¹{7N���æ �ê®°±%¦\�æ ¾¿¨­Í ÿ ù / ï � ÷] ïÛ : / ÛSe æ Ý � y3æ ÝæåS?�¹{7NÍ6�� ��æ ü¨ÐÂÒÑ"i ý Ô � ÷°ß?Ö�ע͢¨­¼�¶Á¯È¾ºª«Àɽ ±�¯È½ÁÍ»¸�¶Á¾ÆåS?�¹{7NÍ6��J��æ �¢¶Õ¯t®°èÁ®¹¯²Àªåe��Ô Ê5Öz¨­¼ � ¦��æ ï ù / 8 i·z»³²®Ã± ¥ æ �}z¢®°ªÐ³²®Ö³²®Ã± ¥ æ e æ åS?�¹{7N #gæ ¦®°¯²¼�¶Á¯È¾ ®°¯È¯²¶Õ¯È³�½ÁÍ»¸É®¹¯È½Õ³�×»¯²®Ó³´¸¢®¹Âö�¸�¨«Í¢Ô¿¶ ¼ ±²µ»®�èÁ®¹Âñ²¶Õ¯ �� ( ¥ - ÷ �°�?� ÷ ¥ ��* åS?�¹{7Në}�æ ú ¼ø½¿èÁ®¹Âñ²¶Õ¯ � �Ø��Å �µ ¨Ð³t¶Á¬�±Ò½ ¨«Í¢®¹¸ï¨«Íù�α²®¹Ï��Rz»ÂÒµ¢®ÓÂÒÑî±²¶Ì³²®°®�¨­¼( ïÛ : / ;D: - Û � Ýæ÷ y Ý�màÛ ùÕù / Ý ï � ½ÁÍ»¸¨Ç¼ø³�¶¿¶Õ×�±²Ï¢×¢± � ��å

x ³�¨­Íï±Èµ¢® ½ Í ½ ª«Àê³²¨Ð³t¶ ¼ ä,!��R¹½hî��Q è h�� Z !T��Q`�ï{ Z h?¹ {Îy ·Ë® ³�®¹®Ö±²µ»½ ±�±²µ¢® ¯È½ÁÍ»¸�¶Á¾ è ½Á¯²¨Ð½ ¬»ª­® � ½Õ³�¸�®ÃØ Í¢®¹¸Æ¨«Í�αȮ°Ï»³ ¡ å­ß�½ÁÍ»¸ ¡ å � ½Á¬ ¶|èÕ®©³È½|±È¨«³�Ø»®¹³´±Èµ¢®�ÂöÕÍ»¸�¨­±²¨«¶ÁÍ �

í ¦�Ï�Ô Á ®°¯Ò½Á³²×¢¯²®Ó³´¨­Í � a � çÕÛ]Á ®¹¯²¯È¶Á¯Ò³Å¨«Í � Ý�ÖLm � ¦ ï ù / �ú Í Ï»½ ¯²±²¨ÐÂÃ×¢ªÐ½ ¯\zø±Èµ¢®°¯È®Æ®H¦�¨«³�±È³¿½ ÂÒµ¢¶Á¨ÐÂîﶠ¼#i ¨­Íä�α²®¹Ï ¡ å­ß}z˳²×»ÂÒµã±Èµ»½|±¿¼�¶Õ¯¿±²µ¢¨Ð³îÂÒµ¢¶Á¨ÐÂîﶠ¼�iLz˱²µ¢®ÆèÁ®ÓÂæ±È¶Á¯ �¶Á¬¢±È½ ¨«Í¢®Ó¸É¨«Íù�α²®¹Ï ¡ å � ³È½|±È¨«³�Ø»®¹³´±Èµ¢®�ÂöÕÍ»¸�¨­±²¨«¶ÁÍ �

Û/Á ®°¯Ò½Á³²×¢¯²®Ó³´¨­Í � Ý aË� çÎÛ/Á ®°¯È¯²¶Õ¯È³´¨«Í � Ý�m � ¦ ï ù / �{�µ¢®Ö¶ÁÍ»ª­Àí¨­Íα²®¹¯²®Ó³ð±È¨­Í»ÔºÂÒµ¢¶Õ¨«Â°®¹³�¶Á¼(iÚ½ ¯È®©¼�¯²¶Õ¾ ±²µ¢®�³²®Ã± û1 ÿ � ÷¹ß�� ç ÿ � ¦��æ ï ù / � åe��Ô Ê5Ö���³²¨­Í Âîּ�¶Á¯t®¹èÁ®¹¯²Àî¶Á±²µ¢®¹¯ÂÒµ¢¶Õ¨«Â°®�¶ ¼(iLzα²µ¢®¹¯²®©¨Ð³´³²¶Á¾¿®�iî�Ø� û ¼�¶Õ¯´·tµ»¨«Âҵɱ²µ¢®©èÁ®ÓÂæ±²¶Õ¯ � ¶Á¬¢±È½ ¨«Í¢®Ó¸î¨«³´¨Ð¸�®°ÍαȨ«Â¹½ ªx¼�¶Á¯Áiî��½ Í ¸�izå|{�µ¢¨Ð³´ÔÁ¨«èÁ®Ó³×»³�±Èµ¢®�¸�®°±²®°¯È¾¿¨­Í»¨«³�±²¨ÐÂÖ½ ª«ÔÁ¶Á¯È¨­±²µ¢¾�¬x®°ª«¶|· �

�ï{��Ó{Îy�� sG� sGOÇ�¹s Z Q è hP� Z !T��QB�í{ Z hg¹é{ÎyÄ sn�x{ô��æ©y� (�y - ÷ �?�°� ÷ y �+* åS?�¹{7N ��æ �¢¶Õ¯�å«�1Ô Ê5Ö�z¢Âöվ¿Ï¢×�±²®�e æ ±²µ ½|±�¾¿¨­Í»¨­¾¿¨«ì°®¹³� íÛ : / ÛSe æ Ýæ÷ y3æ ÝÃåS?�¹{7N���æ �ê®°±%¦\�æ ¾¿¨­Í ÿ ù / ï � ÷] ïÛ : / ÛSe æ Ý � y3æ ÝæåS?�¹{7NÍ6�� ��æ ç�®°± û� ÿ � ÷°ß�� ç~ÿ � ¦\�æ ï ù / � å(�1Ô Ê5ÖS�Õå¥�t®¹Ï ®Ó½|±��αȮ°Ï»³ ¡ å � ±È¶,��¼�¶Õ¯t®°èÕ®°¯ÈÀÌÂÒµ¢¶Á¨ÐÂîֶ ¼�i�� û åS?�¹{7NÍ6��J��æ �¢¶Õ¯t®°èÁ®¹¯²Àªåe��Ô Ê5Öz¨­¼ � ¦��æ ï ù / 8 i·z»³²®Ã± ¥ æL �}z¢®°ªÐ³²®Ö³²®Ã± ¥ æ½ e æ åS?�¹{7N #gæ ¦®°¯²¼�¶Á¯È¾ ®°¯È¯²¶Õ¯È³�½ÁÍ»¸É®¹¯È½Õ³�×»¯²®Ó³´¸¢®¹Âö�¸�¨«Í¢Ô¿¶ ¼ ±²µ»®�èÁ®¹Âñ²¶Õ¯ �� ( ¥}- ÷ �°�?� ÷ ¥ � * åS?�¹{7Në}�æ ú ¼ø½¿èÁ®¹Âñ²¶Õ¯ � � ��Å �µ ¨Ð³t¶Á¬�±Ò½ ¨«Í¢®¹¸ï¨«Íù�α²®¹Ï��Rz»ÂÒµ¢®ÓÂÒÑî±²¶Ì³²®°®�¨­¼( ïÛ : / ;D: - Û � Ýæ÷ y Ý�màÛ ùÕù / Ý ï � ½ÁÍ»¸¨Ç¼ø³�¶¿¶Õ×�±²Ï¢×¢± � ��å

ßÕßH�Òß � �

Page 105: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

{�µ¢®t¯Èע͢͢¨«Í¢ÔֱȨ­¾¿®�¶Á¼ ±Èµ¢¨«³Ë½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾ ¨«³�è¿ÛvÊ�Ê / � a Ê1¿ Û�ÊzݲÝ�·tµ¢®¹¯²®O¿ Û�ÊzÝ ¨Ð³¦±²µ¢®�¯²×¢Í»Í¢¨­Í»ÔÖ±²¨«¾º®t¶Á¼�±²µ¢®t®¹¯²¯È¶Á¯Ò³½ Í ¸ ®°¯Ò½Á³²×¢¯È®¹³ ¸�®¹Â°¶ê¸¢®°¯Ö¶ ¼ü±Èµ¢®¿¶Á×�±È®°¯�Âö�¸�®Õå�U˶Á¯È¯È®¹Âæ±ÈÍ¢®¹³È³t¼�¶Õª­ª«¶|·�³�¼�¯²¶Õ¾ ±²µ¢®î½ ¯ÈÔÁ×»¾º®¹Íαȳ©¸�®°èÕ®°ª«¶ÁÏx®¹¸~³²¶í¼v½ ¯Óå¤ ®�³�×¢¾¿¾î½ ¯È¨«ì°®©±²µ¢®�¸¢¨«³ÈÂÃ×»³È³²¨­¶ÕÍí·t¨­±²µï±²µ»®Ö¼�¶Áª«ª­¶|·t¨«Í¢Ô ±²µ¢®¹¶Á¯È®°¾ �

��� {�h»y|{�� �x� � �^�ÉÈ <?> � Ì�<l>�CD<9P�G325P]0�>�<?2:0�> ' G�2�GtEq032 Ô Êø÷�Â�÷²ùbÖ µ G3M^>�<HIqP�G\4b< � - 0�2:47032 Ô Ê / ÷] / ÷Èù / Ö , ' 2R2:<?IP�G°4}<�< � / c ' >JC � " ��� @×1îM\Z}ZDG3K?< � - CD03K�032�Â�<?INI[G3I�K,0�2:4�<HI[03KNM^I[<NK�4}<�P]G\4 ' 2�VÎ03; VWG3I ' >�C��ÄÃ�INM^2R2 ' 2WV ' 2> ' �F< ¿ Û�ÊzÝ 4b<�P�G°4 ' 2WV�M\Z�>�G � <HI[03KNM^I[<NKa0�2:4�ì�<?INI[G3I�KnZ5I[GA$ ' 4b<�4 � a � ì + ù @ªA:CR<H2 � CD03K�0�2dM^2503�ªÌ ' VbMRG3M�K4b<�P�G\4 ' 2WVB0�; V}G�I ' >JC^� INM^2R2 ' 2�V ' 2�> ' �ª< è¿ÛvÊ�Ê / � a Ê1¿ Û�ÊzÝ²Ý @x Ôν ¨«ÍizÕ±²µ¢®©¯²×»Í¢Í¢¨«Í¢Ô�±È¨­¾¿®¹³´Â°½ÁÍ̬x® ¨«¾¿Ï¢¯²¶|èÕ®¹¸¿·t¨­±²µÉ³²¶Á¾¿® ®�Ù�¶Á¯²±¹å ú ÍÌÏ»½Á¯�±È¨«Â°×¢ª«½Á¯°z�¢��¶ ±²±²®¹¯�Ô »}� Ö�³²µ¢¶|·�³üµ¢¶|· ±È¶ÂÃ×¢±�¸�¶|·tÍɱȵ¢®�¯È×¢ÍɱȨ­¾¿®�±È¶£áð×»³ð±~è¿ÛvÊ�Ê / � a ¿ Û�ÊzݲÝ˼�¶Á¯�³²¶Á¾¿®©¼v½ ¾¿¨«ª­¨«®¹³�¶Á¼¦Â°¶Áͻ¹½|±²®¹Í»½|±È®¹¸ïÂö�¸�®Ó³°å

ßÕßH�Òß � �

Page 106: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

« ¬®­°¯²±�³S´ h­Å

Ç��� �=5ê·¶ é u:h y sG� � �ãs Zv¸ �¤�°y3h?¹ w Z �¹s�h��º�\h è hg¹ésD�éu ��� {�h»y � ¢©Âñ²¶Á¬x®°¯ � ÍDz ���}� ß½�¾�¿�ÀPÁ�Â�¾�j�Æ

È <�P?>�M^I]<HI<Ä�Åù0}4°C^MÆ1îMR4}032 1ØPHI ' Ì�<iÄ ! <�G�I�V}<Ð1Ø0A$i$ ' 4}<NK{é¶ê¸»½ À:® ³Ë±²¶ÕÏ¢¨«Â¹³ �ßÕå~U˶Á¾ ¬»¨­Í»½ ±²¶Õ¯²¨Ð°³©Û�¯È®°èê¨Ð³�¨­±²®Ó¸»ÝNz¢¨«Í»Â°ª­×»¸¢¨­Í¢Ô¿±ð·´¶¿Í¢®°·ëÏ¢¯È¶Î¶Á¼v³�¶ ¼ ±²µ¢® Ê ¶Áµ»Í»³�¶ÕÍɬx¶Á×¢Í ¸�å� å�ç�¨Ð³ð±�¸�®ÓÂö�¸�¨«Í¢Ôº¼�¶Á¯Q�t®¹®¹¸����ê¶Õª­¶Õ¾º¶ÕÍí°¶ê¸¢®¹³¹å

Í�öªñ<Í .°���ÞÝ�ø°ö���ÒR�ÐÑ«ø<��Ô Ñ|õ���ø�ÔYøBÒYõl÷

ç�®°±�×»³�¯È®¹Â°½Áª­ª�±Èµ¢®�Í¢¶Á±²¨«¶ÁÍﶠ¼ø½ ÍþÛ�¦Î÷p�¹Ý�� ®¹¯²¯È¶Á¯[� °¶Á¯È¯²®ÓÂæ±È¨­Í¢Ô�°¶�¸�® -�ï{���� s��¹s�h�� �D��� �­!Õ' $3<H2 0�2 Ô Êø÷]Â�÷Èù�Ö , /tP�G\4b< �ÐX c(<aK?03T�>�CD0�> � ' KÐ032 Û�¦Î÷p�¹Ý�� ®¹¯²¯È¶Á¯t°¶Á¯È¯²®ÓÂæ±²¨«Í¢ÔîÂö�¸�®bX ' E(EHG�I½ ÍêÀ I[<�P�< ' $3<�4 $3<]P?>�G3I y �,Å � , X >�CD<?I[<7< )}' KN>�03>(�ªG�KN> � P]G\4b<?c(G3I]4�K Z - �?�°�?� ÷ Z � ��� KNMRP]C�>JCR03>  íÛ Z æ ÷ y ÝÕm�¦ @ú Í ¶ ±²µ»®°¯©·Ë¶Õ¯È¸¢³ ±Èµ¢®ºÂ°¶�¸�®�� °½ÁÍ Â°¶Á¯È¯²®ÓÂæ± ×»Ï ±²¶ª¦¿®¹¯²¯È¶Á¯Ò³�·t¨­±²µ ª­¨Ð³�±È³©¶ ¼�³�¨«ì°®�� åa{�µ¢®¿Í»½ ±²×¢¯Ò½ ª¦½ ª«ÔÁ¶Õ¯²¨­±²µ¢¾¿¨ÐÂÏ¢¯È¶Á¬¢ª«®°¾ ½ ¯È¨«³²¨­Í»Ôº¶Õ×�±�¶ ¼é±²µ¢® ½ ¬x¶|èÁ®Ö¸�®Ãػͻ¨Ç±È¨­¶ÕÍï¨Ð³t·tµ¢®°±²µ¢®¹¯ Ûv½ÁÍ»¸ïµ¢¶|·�ÝË·Ë®�¹½ Ííػͻ¸Ú½Áª­ª�³²×»ÂÒµÚÂö�¸�®¹·Ë¶Õ¯È¸¢³´¨«ÍÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª�±²¨«¾¿®Áå«{�µ»½ ±�¨«³ �

Ä sn�x{ô��æ©y ��Å � , z»½ÁÍï½Á¯²¬»¨Ç±È¯È½Á¯²À¿¯È®¹Â­èÕ®¹¸íèÁ®ÓÂæ±²¶Õ¯ÒÝÃåÇ w��<N¦w��¼æ x ³�®°±�Û�ª«¨«³�±ÒÝø¶ ¼�Âö�¸�®°·´¶Á¯Ò¸¢³ ÿnC - ÷ �?�?� ÷ C � ��³²×»ÂÒµº±²µ ½|±ü®°èÕ®°¯ÈÀ Âö�¸�®¹·Ë¶Õ¯È¸ Z ±Èµ»½|±Ë³È½|±È¨«³�Ø»®Ó³« íÛ Z ÷ y Ýlm`¦¨«³�¨«Í»Âê«×»¸�®Ó¸ï¨­Íï±²µ»¨«³�³²®Ã±Óå

¤ ®º·t¨«ª«ªø¯²®\¯Õ×»¨­¯È®�±Èµ»½|±�¶Á×»¯Ö½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾B® ³ ¯Èע͢͢¨«Í¢Ôí±²¨«¾º®¿¬x®¿Ï ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ª¦¨«Í~±Èµ¢® ' 23Z5M^> ³²¨­ì¹®ÁåaÏ�¶ ±²¨ÐÂȵ»½|±�¨­±¨Ð³�Ïx¶Õ³È³�¨«¬¢ª«®î±²µ»½ ± ¨­¼O�³ ³�×¢Ïx®°¯ÈÏx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª�zé±²µ»®°Í ³²×»Âҵ㽠Íã½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ¹½ Í�Í¢¶Á± ®H¦�¨Ð³ð±��d�ê¶Rzø½ÚÏ»¯²®¹¯²®\¯Õ×»¨«³²¨Ç±È®cNÈ�sBpDm�pDfAu`p�hko$Éi�9m��ihks4ªij�xkme��p9ªi�9mej|�ny¤m¥ªnj9mel�pDs>�zuBxkx7pDfnhkjRu%Ê�Ë]ÌSÍ6Î��rme�9�9s4�G�r�es4�9�Dmz��pDhkon�\�es<lnm �²Ï m�uB�9m¥�9fAuBon�4hkon��pDfnm¬ÉAuB�2uB��m�pDme�x©uBt0mex¤w!s4��p9fihkj\xkme��p9ªn�Dm4�PjDhkon�em@y¤m~meonl§ªÐɧªnj9hkoi�ÑË�wKs4��p9fnmyÒ9s8ÉfÉ0s4j9h pDmÔÓ�sBwlÕ���h � m � �TpDfnmQoǪn�]t0mz�]sBw�uB�4�9meme��mzo�pDj>�2u`pDfnme�]pDfAuBoo<ªn�\t0me�?sBw�mz�D�9s4�Dj �

ß � �Òß ��»

Page 107: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

¼�¶Á¯�±²µ¢®Ì®?¦�¨«³�±²®¹Í»Âî̶Á¼�±²µ¢¨Ð³ ½Áª­ÔÕ¶Á¯È¨Ç±Èµ¢¾ ¨Ð³�±²µ ½|±�±Èµ¢®ÉÂö�¸�®É¬ ®É½ÁÍ�Û�¦Î÷p�¹Ý�� ®¹¯²¯È¶Á¯[� ÂöÁ¯È¯È®¹Âæ±È¨­Í»ÔÉÂö�¸�®¿¼�¶Õ¯��º±²µ»½ ± ¨«³½íÏ ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ª¦¨«Í~±Èµ¢®¿¬¢ª«¶êÂÒÑÚª«®°Í»Ô ±²µ ¶ ¼Å±²µ¢®îÂö�¸�®Õå ¤ µ¢®¹Í ¸¢¶ï·´®ºÑÎÍ»¶|· ±²µ»½ ±Ö½ÁÍËÔ Êø÷]Â�÷²ùbÖ , Âö�¸�®º¨«³�½Áª«³²¶í½ÁÍÛ�¦Î÷��¹Ý�� ®°¯È¯²¶Õ¯t� Âöկ²¯È®¹Âñ²¨«Í¢Ô °¶ê¸¢®�¼�¶Á¯©³�¶Õ¾º®��©±Èµ»½|±©¨«³�Ï ¶Õª­ÀêÍ¢¶Õ¾¿¨«½Áªz¨«Í Êb� {�µ¢® Ê ¶Õµ¢Í»³²¶ÁÍƬ ¶Õעͻ¸Ú¶Õ×¢ÔÁµÎ±�±È¶í°¶Á¾¿®±²¶¿¾¿¨«Í»¸í½ ±�±²µ¢¨Ð³t³ð±Ò½ ÔÕ®Áå�Ûv{�µ¢¶Õ×¢ÔÁµiz�ÔÕ¨­èÕ®°Íɱ²µ¢®ÖÔÁ®¹Í¢®°¯Ò½ ª�³²®°ÍᲨ«¾¿®°Íαt½ ÔÕ½Á¨­Í ³ð±�Í»½ ¾¿¨«Í¢Ôº¬ ¶Õעͻ¸¢³�¬êÀɸ�¨Ð³ÈÂö|èÁ®¹¯²®¹¯°® ³Í»½Á¾º®Ó³?zζÁÍ»®�°½ÁÍî¬ ®�¼�¶Á¯ÈÔÁ¨«èÁ®°Íº¼�¶Õ¯ÅÍ¢¶Á±ËÂöվº¨«Í¢Ô�×»ÏÌ·t¨Ç±Èµî±²µ»®�¯²¨«ÔÁµÎ±ÅÍ ½ ¾¿®Áå � ¶ÕÏ ®°¼�×¢ª«ª­Àº±²µ»®�¯Î×¢®¹³�±²¨«¶ÁÍ̳�±²¨«ª«ª ¸�¶ê®¹³¯È¨­Í¢Ô¬x®°ª«ª å Ý ¤ ®�¯È®¹Â¹½ ª«ªx±²µ¢® Ê ¶Áµ¢Í ³�¶ÕÍí¬x¶Á×¢Í ¸í¬x®°ª«¶|· ���� {�h»y|{�� �D���J�½ÆÖúih � ��O\hP�¸m(h wR�R¹§É�È <?>l6 ×Ö� 03254 ä �

� @¸��2 Ô Êø÷�Â�÷²ùbÖ , /tP�G°4}< ' KB0�2 Û�¦Î÷�ÊzÝ /t<HINI]G3I4/P�G3INI[<�P?> ' 2�V / P�G°4}<�Z5I[GA$ ' 4b<�4,>JCR03>6 m "

á ß"

a�ßtá � ßtá "" á ß ä c

�t®Ó°½ ª«ª�±²µ ½|±�¨«ÍÆ°ª«½Õ³²³�·´®ÖÏ¢¯È¶|èÁ®¹¸Ì±²µ¢®�¬»¨­Í»½Á¯²Àí°½Á³²®©¶ ¼ ±²µ¢®Ö±Èµ¢®°¶Õ¯²®¹¾�z�·tµ»®°¯È® ±Èµ¢®�ÂöÕÍ»¸�¨­±²¨«¶ÁÍƶÁÍ 6 ·�½Á³

6 mß� } ßtá � ßtá � ä ~ �

��� {�úih � ��O\hP�Gmeh wR��¹&!TNRN é sv{ô¹%�°hºäí{Î{ô¹bQ_SLh é hî�"h�� Z h?¹ {7O ú Í~±²µ¢®î¹½Á³²® ¶Á¼]�q� Âö�¸�®¹³°z " Ù Ú zz³²¶·´®©Â¹½ Íɳ²¨­¾¿Ï¢ª«¨­¼�Àî±²µ¢®©¬x¶Áעͻ¸í½ ¬x¶|èÁ®Õå ú ÍïÏ»½ ¯²±²¨ÐÂÃ×»ª«½Á¯°zηˮ ÔÁ®°±Ë±Èµ»½|±´±²µ¢®ªÔ Êø÷]Â�÷Èù�Ö , ���W� °¶�¸�® ¨Ð³�½ ªÐ³�¶º½ Í~Û 6 Êø÷�ÊzÝ��®°¯È¯È¶Á¯[� °¶Á¯È¯²®ÓÂæ±²¨«Í¢Ô�°¶ê¸¢® ¼�¶Õ¯ 6 mëß´á � ßtá äêå ¡ ³�¨«Í¢Ôº±²µ»® ¼v½ÕÂæ±�±²µ ½|±t±²µ»®�¯È½ ±²®ÖÙ ¶ ¼¦³�×»Âҵƽ¿Âö�¸�®Ö¨Ð³Öß´á ä�z�±²µ»®½ ¬x¶|èÁ®©¬x¶Áעͻ¸ï³È½ Àê³Ë±Èµ»½|±t±Èµ¢®�)�ª«¨«³�±t� ¶ ¼J� Ê~¸�®ÓÂö�¸�¨«Í¢Ô¿¯È½Õ¸�¨­× ³5+ ¶ ¼é±²µ¢®�Âö�¸�®Ö¨Ð³Ößtá � Ùºå|{z¶îÂöվ¿Ï»½ ¯È®�±Èµ¢¨Ð³t·t¨Ç±Èµ±²µ»®�ª­¨Ð³�±t� ¶ ¼J�Òß�¸�®¹Â°¶ê¸¢¨­Í¢Ôî¯Ò½Á¸¢¨­×»³ Û�¶Á¯�±²µ¢®�׻ͻ½ ¾ ¬¢¨­ÔÕ×¢¶Á× ³�¸�®¹Â°¶�¸�¨­Í»Ôî¯È½Õ¸�¨­× ³ÈÝHz»¨«Í ³�×»ÂÒµÚ¹½Á³²®�·Ë® ¹½ ÍƶÁÍ»ª­Àï½ ª«ª­¶|·6 m -�~ f/ ån{�µê×»³°z»½Á³�·Ë®�·´¶Á×¢ªÐ¸ïµ¢¶ÁÏx®bz»±²µ¢® ª­¨Ð³ð±[� ¸¢®¹Âö�¸�¨«Í¢Ôî¯Ò½Á¸�¨«×»³t¨Ð³�³�±²¯È¨ÐÂæ±²ª«Àɪн ¯ÈÔÁ®¹¯�±²µ»½ÁÍï±²µ¢®�׻ͻ½ ¾ ¬¢¨­ÔÕ×¢¶Á× ³¸�®ÓÂö�¸�¨«Í¢Ô¿¯È½Õ¸�¨­× ³´¼�¶Á¯�½ ÍêÀ���®°®¹¸^���ê¶Õª­¶Õ¾¿¶ÁÍí°¶�¸�®�¶ ¼ ¯È½ ±²®Öª­®Ó³²³´±Èµ»½ ÍþßÕå�¢×»¯�±Èµ¢®°¯È¾¿¶Á¯È®bz´±²¶ãµ»¨­ÔÕµ¢ª­¨«ÔÁµÎ±Ì±Èµ¢®~¸�¨KÙ�®°¯È®°Í»Â°®bztª«®Ã±É×»³ïÂöÕÍ»³²¨«¸�®¹¯É½ Í ®?¦Î±È¯²®¹¾î½ ª ¹½Á³²®Ú·tµ¢®°Í¡·´® ª«®Ã±Ì±Èµ¢®~¯Ò½|±È®½ Ï»Ï¢¯²¶Î½ÁÂÒµíì°®°¯È¶ �

ßÕå~ª«¨­¾f r E ßtá � Ù ß Ûv³²¶ 6 Ù ß Ý

� å~ª«¨­¾f r E ßtáþÙ� ß ï � Ûv³²¶ 6 Ù ß ï � Ý

{�µê×»³©¨­Í#U´½Á³²® � Û�×¢Í ½ ¾ ¬»¨­ÔÕ×¢¶Á×»³Ö¸�®ÓÂö�¸�¨«Í¢ÔÎÝHz�½ÉÍ»®¹Âîӳ²³È½ ¯ÈÀÆÂöÁÍ ¸�¨Ç±È¨­¶ÕÍ ¼�¶Õ¯Ö³²×»Â¹Âȳ�¼�×¢ª ¸¢®¹Âö�¸�¨«Í¢Ô飼³ ±Èµ»½|±Ö±²µ»®¼�¯Ò½ÁÂæ±È¨­¶ÕÍ ¶Á¼©®¹¯²¯È¶Á¯Ò³ ¬ ®Ú¬x¶Á×¢Í ¸�®¹¸ ¼�¯È¶Á¾ ½Á¬ ¶|èÕ®ï¬êÀ�±Èµ¢®Æ¼�¯Ò½ÁÂæ±È¨­¶ÕÍ ¶Á¼©Â°¶Á¯È¯²®ÓÂæ±î¨­Í¢¼�¶Á¯È¾¿½ ±²¨«¶ÁÍ�å � ¶|·Ë®¹èÁ®°¯\züª«¨«³�±t�¸�®ÓÂö�¸�¨«Í¢Ô ³²®°®¹¾¿³Å¼�®¹½Õ³�¨«¬¢ª«® Ûv°¶Á¾ ¬¢¨­Í ½|±²¶Õ¯²¨Ð½ ª«ª«Àbzê½|±Ëª«®¹½Õ³ð±æÝø®¹èÁ®°Íî·tµ»®°Í̱ȵ¢¨Ð³Ë°¶ÁÍ»¸�¨­±²¨«¶ÁÍɨ«³Ëèꨭ¶Õª«½ ±²®¹¸*z ¨ å ®Õå=zê·tµ¢®¹Í±²µ»®Å½ ¾¿¶Á×»ÍÕ±�¶Á¼ê°¶Á¯È¯²®ÓÂæ±�¨«Í�¼�¶Á¯È¾î½|±²¨«¶ÁÍ֨г�¶|èÁ®¹¯²·tµ»®°ª«¾º®Ó¸�¬êÀ�±²µ¢®Å½Á¾¿¶Á×¢Íα�¶ ¼ê®°¯È¯È¶ÁÍ¢®¹¶Á×»³x¨«Í�¼�¶Á¯È¾î½|±²¨«¶ÁÍzå x ³z·Ë®ø·t¨«ª­ª³²®°®�¶|èÕ®°¯Å±²µ¢®ÖÂöÕ×¢¯È³²®�¶Á¼�±²µ¢®©Í¢®?¦Î±tÂöÕעϢª«®�¶Á¼zª­®ÓÂæ±È×¢¯²®Ó³?zÕ±²µ»¨«³´¬»½Á¯²¯È¨­®¹¯Ë¹½ Í̬x® ¶|èÕ®°¯ÒÂöվº®�®°èÁ®¹Íɽ ª«ÔÁ¶Õ¯²¨­±²µ»¾º¨Ð°½Áª­ª«À��¬´×�±�Ø»¯Ò³�±°z¢·´®�·t¨­ª«ªé°®°ª«®°¬¢¯Ò½|±È®Ö±²µ¢® Ê ¶Áµ»Í»³�¶ÕÍƬ ¶Õעͻ¸þÛ�®¹¯ å«å­åËÀÁ®¹³°z¢·´®�³ð±È¨­ª«ªé¸¢¶ÁÍi® ±�µ»½ èÕ®Ö½¿¬x®Ã±²±²®¹¯�·�½ Àî±²¶îÍ»½Á¾¿®±²µ»®�¬ ¶Õעͻ¸¢³ÒÝ´¬êÀÌÔÁ¨«èꨭ͢Ժ±ð·´¶î½ ª­±²®°¯ÈÍ»½ ±²®ÖÏ¢¯È¶Î¶Á¼v³´¶ ¼ ±²µ¢®�¬x¶Á×¢Í ¸�å

Í�öªñBö è­Ø°� ó�Ñ¥�b�Ð0Ô �Ð Ò�úBõÚÙ ��ú�ö�ÔR�ÐöêÝ×�7ÿ�öB÷{�µ¢®î®¹ª­®¹ÔÕ½ Í Âîͻ¸ ¬x®¹½ ×¢±ðÀ~¶ ¼t³²¶Á¾¿®¿¶ ¼´±²µ¢® ÛvÍÎ×»¾º®¹¯²¶Õ×»³ÒÝ�Ï»¯²¶ê¶ ¼v³Ö¶Á¼Ë±Èµ¢® Ê ¶Áµ¢Í»³²¶ÁÍ ¬x¶Áעͻ¸þ½Á¯²®¿Ï»½Á¯�±�¶ ¼´±²µ»®¯È®¹½Á³²¶ÁÍ�·tµêÀֱȵ¢¨«³ Ï»½Á¯�±È¨«Â°×¢ªÐ½ ¯ ¬ ¶Õעͻ¸�¨Ð³ ¶ ¼»¨«Íα²®¹¯²®Ó³ð±é±²¶©×»³°åY¬´®°ª«¶|·�·Ë®Ë·t¨­ª«ª�³�®¹®Å±ð·´¶�Í»®°·ãÏ¢¯È¶ê¶ ¼v³é¶ ¼¢±Èµ¢® Ê ¶Õµ¢Í»³²¶Áͬx¶Áעͻ¸í¼�¶Õ¯�±²µ¢®�¹½Á³²®©¶Á¼R�t®¹®¹¸����ê¶Õª­¶Õ¾º¶ÕÍï°¶�¸�®¹³¹åøç�®Ã±�× ³´Ø»¯È³�±�¯È®¹Â°½Áª­ªx±Èµ¢®�Ï¢¯È¶Á¬¢ª«®°¾ ¬ ®¹¨­Í¢Ôî°¶ÁÍ»³²¨«¸¢®°¯È®¹¸ �� q�mzjz��Û�hkj?t¼sBpDf�pDfnm¥j9hk�em¥sBwTpDfnm��esÇlnm�y�s4�Dlnj�uBonl~pDfnm�j9hk�em¥sBwTpDfnm�xkhkjDp

ß � �Òß � õ

Page 108: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

§©¨­èÕ®°ÍÌÊ~¸¢¨«³�±²¨«Í»Âæ±tÏx¶Á¨«Íαȳ\: - ÷ �°�?� ÷z: � �,Å , ½ Í ¸ÌÊ è|½ ª«×¢®Ó³�0 - ÷ �?�?�L� 0 � ��Å , z�¬x¶Á׻ͻ¸î±Èµ¢®ÖÍÎ×»¾ ¬x®°¯¶ ¼zÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³Òiﶠ¼ ¸�®°ÔÕ¯²®¹®©½ ±´¾¿¶Õ³�±lÂ5z¢³�× Âҵ̱²µ ½|±%iéÛG: æ Ý 0 æ ¼�¶Á¯t½|±�ª­®Ó½Á³�± ì è|½ ª«×¢®¹³´¶ ¼·å(�ÎÔ Ê5Ö åÏ�¶Á±²®©±²µ ½|±�·´® µ»½ èÕ®©³²µ¢¨­¼Ü±²®Ó¸É±Èµ¢®Ö¼�¶�ÂÃ×»³´±È¶º±²µ¢®ÖÍê×¢¾ ¬x®°¯t¶Á¼ ½ÁÔÁ¯È®°®°¾¿®¹ÍÕ±Ò³´¯È½ ±²µ¢®¹¯Ë±Èµ»½ Íí±²µ»®©Íê×¢¾ ¬ ®¹¯t¶ ¼ ®°¯È¯²¶Õ¯È³¹å{�µ¢¨Ð³Ö¨«³Ö½í¬ ®°±�±È®°¯�ÂÒµ¢¶Õ¨«Â°®bz�³²¨­Í»Â°® ±Èµ¢¨Ð³Ö¨«³ ±²µ»®¿³²¾î½ ª«ª­®¹¯ÖÍÎ×»¾ ¬x®°¯�½ Í»¸ µ¢®¹Í»ÂDZ�¨Ð³�½É¾¿¶Õ¯²®º¯²®°Ø»Í¢®Ó¸ Íê×¢¾ ¬x®°¯©±È¶ª«¶Î¶ÕÑɽ|±�Û ½Á³t¶ÕÏ¢Ï ¶Î³�®Ó¸Ì±È¶º±²µ¢®�Íê×¢¾ ¬ ®¹¯�¶ ¼¦¸�¨«³È½ ÔÕ¯²®¹®°¾¿®°ÍαҳÈÝÃå«¢ ×»¯t¬ ¶Õעͻ¸¢³t·t¨«ª«ª�¬ ®�¶Á¼z±Èµ¢®Ö¼�¶Á¯È¾¬)�±²µ¢®ÖÍê×¢¾ ¬x®°¯¶ ¼ø³²×»ÂÒµíÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³�¨«³t³²¾î½ ª«ª�z�Ï»¯²¶|èê¨Ð¸�®¹¸ ì Þ C � ÂêÊ¦å ¤ ®�Í¢¶|· ÔÕ¨­èÕ® ±Èµ¢®�Ï¢¯È¶ê¶ ¼v³¹å

�L±��S±���� Ü��ê�t¸Qÿ �D´��ÝD}¸ ���tà �Î���(¸w�tf�gt���[à��ê�ð�e¸ h�� �t¸�����h ���{�µ¢®©¨­Í Âê«×»³�¨«¶ÁÍD� ®?¦�°ª­× ³�¨«¶ÁÍÌÏ»¯²¨«Í»Âè«Ï¢ª«®©³²µ¢¶|·�³Ëµ¢¶|·¡±È¶ºÂ°¶Á×¢Íα´±²µ¢®ÖÍê×¢¾ ¬x®°¯�¶Á¼z®°ª«®°¾¿®°Íαҳ˨«Í̱ȵ¢®Öע͢¨«¶ÁÍí¶ ¼j� ³²®Ã±Ò³?zÔÁ¨«èÁ®¹Í ±Èµ¢®î³�¨«ì°®Ó³ ¶Á¼Ë½ ª«ª¦¨­ÍαȮ°¯È®¹³²®¹Âæ±È¨­¶ÕÍ»³¹å ¤ µ¢¨«ª­®º±²µ»® ¼�×»ª­ª¦¼�¶Õ¯²¾ ×¢ª«½ Û�Í¢¶Á±�ÔÁ¨«èÁ®°Í µ¢®°¯È®ÓÝ�ÔÁ¨«èÁ®Ó³�±Èµ¢®î³�¨«ì°®¿®?¦�½ÕÂæ±Èª­À}zÏx¶Á¯²±²¨«¶ÁÍ»³ ¶ ¼ü±Èµ¢®º¼�¶Á¯È¾ ×¢ªÐ½É½Á¯²® ÑêÍ¢¶|·tÍÚ±²¶ïÔÁ¨«èÁ® ¬ ¶Õעͻ¸¢³©¶ÕÍ ±²µ»®º³²¨­ì¹® ¶Á¼ü±²µ»® עͻ¨­¶ÕÍ�å�{�µ¢®º×¢Í¢¨«¶ÁÍ~¬x¶Á׻ͻ¸~¨Ð³©½³²¨­¾¿Ï¢ª«® èÕ®°¯Ò³�¨«¶ÁÍÉ·tµ¢¨«Âҵﳲ½ À�³ü±²µ»½ ±´±Èµ¢®Ö³�¨«ì°®©¶ ¼�±Èµ¢®©×¢Í¢¨«¶ÁÍɨг 03>«�ªG�KN> ±²µ»®Ö³²×¢¾ ¶Á¼�±²µ¢®Ö³²¨­ì¹®¹³´¶ ¼�±Èµ¢®©¨­Í»¸¢¨­èê¨Ð¸�×»½ ª³²®Ã±È³¹åüç�¶ê¶ÕÑΨ«Í¢Ô¿½|±�³²¨­ì¹®¹³�¶Á¼éÏ»½Á¨­¯È·t¨«³²®Ö¨­ÍαȮ°¯Ò³�®ÓÂæ±²¨«¶ÁÍ ³ËÔÕ¨­èÕ®¹³´±Èµ¢®�ª­¶|·´®°¯�¬x¶Á×¢Í ¸í¬x®°ª«¶|· �

gÖy3h+Neh�OÓs��ÓsvhP� �D��� 6¸Æ�� {�!Tå ¸ � Z é wRO¹s�h��bQ,P � Z é w�OÓsvhP�ËgÖy sD� Z s�N é {�É�% G�In032îT � KNMRÌHKH<?>�K û - ÷ �?�?� ÷ û � G�E(KHG��F<\«2 ' >�<�M^2 ' $3<HI�K?<%Þ X >�CD<eEHG3;J;=G�c ' 2WV ' 2:<�ã?MR03; ' >STÐCDG�;=4�K<Äßßßßßß�àM J -

û Mßßßßßß Þ Y^

M J -� û M � á ^

- ] M � ^ M � ] Y ßßß û M ��á û M � ßßß �ê�ëAì0írîiï ðzì7ñ ü¯È¶|èÁ®£ ü¯È¶ÁÏx¶Õ³²¨Ç±È¨­¶ÕÍ~ß � å ¡ åÏ�¶|·�z�·´®º³²µ¢¶|· µ¢¶|·à±È¶ï½ÁϢϢª«Àï±²µ¢® ú ͻ°ª­×»³²¨«¶ÁÍ^� í ¦¢Âê«×»³²¨­¶ÕÍù ü¯È¨­Í Âè«Ï¢ª­® ±²¶ï¶Á×¢¯©Ï¢¯È¶Á¬¢ª«®°¾Æå��ê×¢Ï»Ï ¶Î³�®�i - ÷ �?�°� ÷$i �½ ¯È®Ö¸�®°ÔÕ¯²®¹®£ÂÉÏ ¶Õª­ÀêÍ¢¶Õ¾º¨Ð½ ªÐ³Ë±²µ»½ ±�½ ÔÁ¯È®°® ·t¨Ç±Èµï±²µ¢®ÖÔÁ¨«èÁ®¹ÍÉÏx¶Á¨«Íαȳ´¶ÁÍƽ|±tª«®¹½Á³�± ì Ï¢ªÐ½Á°®¹³¹å ¤ ®�¸�®ÃØ Í¢® û M z V �ÎÔ �NÖ½Á³´¼�¶Õª­ª«¶|·�³ �

û M ÿ åe��Ô Ê5Ö½��i M Û�: æ Ý 0 æ � �¤ ®�Í¢¶ ±È® ±Èµ»½|± û M ® ³�³È½|±È¨«³�¼�Àî±Èµ¢®Ö¼�¶Áª«ª­¶|·t¨«Í¢ÔºÏ¢¯È¶ÁÏx®°¯²±²¨«®¹³ �

ñ �¢¶Á¯t®¹èÁ®¹¯²À V ��Ô Ê5ÖSz½� û M ��Þ ì � ¬´À̵êÀêÏ ¶Á±²µ¢®Ó³�¨Ð³¹åñ ßßß â �M J - û M ßßß m Ê � ¢ ¬êèꨭ¶Õ×»³°z¢³�¨«Í»Âî֮ӽÁÂÒµ û M �&Ô Ê5Ö åñ �¢¶Á¯©®°èÕ®°¯ÈÀ︢¨«³�±²¨«Í»Âæ± V - ÷ V / z(� û M ��ã û M � �Ømý � ��¨­Í»Â°®Di M � Û�: æ Ý i M � Û�: æ Ýt¼�¶Õ¯ ®¹èÁ®°¯ÈÀBåq� û M ��ã û M � z�½ÁÍ»¸±ð·Ë¶¿¸�¨Ð³ð±È¨­Í»Âñ ¸�®¹ÔÁ¯È®°®�ÂÉÏx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³´¾¿½ Àí½ ÔÁ¯È®°®©¶ÁÍÚ½ ±�¾¿¶Î³ð±qÂï¸�¨Ð³ð±È¨­Í»Âñ�®°ª«®°¾¿®°Íαҳt¶ ¼·Å , å

�¢¯È¶Á¾ ±Èµ¢® ½Á¬ ¶|èÕ®bz�½ÁÍ»¸ ±Èµ¢® ¨«Í»Â°ª­×»³²¨«¶ÁÍ^� ®H¦¢Âê«×»³²¨­¶ÕÍ¡Ï¢¯È¨­Í»Â°¨­Ï»ª­®}z ½ Í ¸ ±²µ¢® ¼v½ÁÂñí±Èµ»½|±ï±²µ»®°¯È® ½ ¯È®GH �/ J Ï ½ ¨«¯È³É¶ ¼¨«ÍձȮ°¯Ò³�®ÓÂæ±È¨­¶ÕÍ»³´±²¶îÂöÕÍ»³²¨«¸�®¹¯°z�·´®Öµ»½ èÁ® �

Ê Þ4�>ç ì á�a �� c ç\ � Ûðß � å­ß Ý�¢×»¯�±Èµ¢®°¯\z�¬êÀɾ¿¶ÁÍ¢¶Á±²¶ÕÍ¢¨«Â°¨Ç±ðÀ}z�·Ë®�½ÕÂæ±²× ½ ª«ª­À̵ ½ èÁ®

Ú(� � m4� Ê Þ<� � ç ì á a �?�� c ç\ � Ûðß � å � Ý

ß � �Òß � �

Page 109: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

Û ú ¼é±²µ¢®¹¯²®�½Á¯²®D��Ïx¶Áª«ÀÎÍ»¶Á¾¿¨«½Áª«³´·t¨­±²µÆ½ ÔÕ¯²®¹®°¾¿®°Íα˶Á¼ ì zê±Èµ¢®°Íƽ ¯È®©½Áª«³²¶��?�im4��Ïx¶Áª«ÀêÍ¢¶Á¾¿¨Ð½ ªÐ³´·t¨Ç±Èµï½ÁÔÁ¯È®°®°¾¿®¹ÍÕ± ì å Ý{�µ¢®Ö¼�¶Õª­ª«¶|·t¨­Í»Ô עͻ¯²®¹¾¿½Á¯²Ñ|½Á¬¢ª­®�½ÁÍ»¸Ì±È®¹¸�¨«¶Á× ³�ª­®¹¾º¾î½ºØ»Í»¨«³²µ¢®¹³�¶¼Ù ±²µ»®�Ï¢¯²¶ê¶Á¼ ��Å{�� �"!��^���=# 1îM\Z}ZDG3K?< Êø÷�Â�÷ ì�03I]<ÕZRG�K ' > ' $�< ' 2R>�<�V}<?I�K£K�MRP�CB>�CD0�>Lìn8 � � ÂêÊ @FA5CR<H2 Ê + �?�Tç ì á H �]ä/ J ç°Â EHG�I� � �å / �âwæ @gÖy3hih:j çz®Ã±>F�ÛG:xÝ � / : / á H ì a � / J : a Êøå|Ï�¶Á±²®©±²µ»½ ± / �â + � � m / �â a ßÕå|¬ËÀÌ°¶ÁÍêèÁ®?¦�¨Ç±ðÀ¿¶ ¼gF�Ûzç ÝË·´® µ»½ èÕ®F�Û � � Ýnm ¾î½3¦�ç¼F�H / �â J ÷eF�H / �â a ß J�èIé¬ê,ëuìsí6î�ïQë%ð4ñFì�ðcò²óYð4ñ F�H^ô4õö ÷ ø J=ìYùIú F3H^ô4õö J�ìsí6ë<ùQë[î2ì�ð4ûýü�ësé¬þ'ûýíAÿÔð��

F��������� �� �� ô� ô ÷ � � � � a � a �� � � �� �� ÷ � ô ÷ � � ô� ÷ �� �� ô � ¡$ÿNû�ùQî ���� � � ô � ����cë��{ð����Àë=ñFìfüsë��

� ������ � ø �� � ��� � � ô� � ô ÷ � � � � � ��� � � � � � �� ! � ô � ! �� � � � ô ÷ ! � � ô ÷ � � © ÷ ���� � ÷ � ô � ��� � ô� � ô� ! � ô � ���� � ÷ ��� � ô ÷ � � ©� � ô� � ô � ��� � � ÷ ��� � ô ÷ � � ©� � ô � ¡%ÿ6û�ùQî ���� � � ô � � ��� � � ÷ ��� ÷ � ��� ÷ ��� ���

êë#"@ósù$"&%�ïFúºë'� û ð4ñ´ð6ñQë'(FíAÿNðcòIó�ïQùFú�é)#*,+�-�.�+�/10�2�354 !7658�9&:<;�=�65:$>@?BA �@C$DFE�0�D HG õDJI,K >5L�9&MF9ON�MF9PN�>RQS=T?U> ô4õö ;�=�VXW�:Y=�QZ6@N�V[? i =]\_^�9a`�MF9H9PN�>RQS=T?U> >bL�N�>c?�N�>d6e?b\HWf[A�gihkj �Yl f im�bCnD i�po D G frq � 6 \ �cs � �� ��it�cósð6ë¾ð4ñFì�ð�ð4ñQû�ÿÑòIó�ïQùFú¹ìsÿ'�Àë�%u%Tì�ÿ=ð6ñQë�ùFë&�{ðuósùQë¿ìsí6ëwvÔïFÿNð#�Àë^ì�xüsë[íAÿ6ûýó�ùFÿ=ó�yÀð6ñQë�ò²ósïFùFúîsû�üsë[ù¹û�ù{zwñQë[ó�|í4ë�} ø � é � é<~Uósð6ñ�ì�����%u�îsë^ùQë[íAì�%u%u�ªð6ó�"[óºúºë^ÿ^é<�%ó��Uë^üsë^íw�Àë>ìsí6ëwvÔïFÿNðyÿF�Ië�"@û ì�%�ûJ�^ûýùFî©ð6ñQë>ìsí6î�ï�}¾ë[ù2ð4ÿ<ð4óªð6ñFë"[ì�ÿNë$ó�y��²ó�%u�{ùQó�}¾û ì�% ÿ���ð6óZxsë^ë���ð4ñQë$ùFóYð4ìYð6û�ósù>ÿ6ûu}Z��%ýë�é'êëcvÔïFÿÔð í4ë��²ë^ìYðTð6ñFë�}�ñQë^í6ë%ð6óyîsû�üsë�ySïQí6ð6ñFë[íwûýù2ð4ïQû ð4ûýó�ùû�ù�ð4ó_� ñFì�ð ð4ñQë��´ìYí4ë%ð4íF�{û�ùQîyð6óS�Qí4ó�üsë��{ìsùFú>ð6ó�ûu%J%�ïFÿNð6íAì�ð6ë<ð4ñQëuÿNûu}_��%�ë��Qí6ó{ó�y�ð6ë�"AñQùQûe�2ïQë^ÿ^é���7�d�7��� Ü����]�����i���Áhw�����R���i���� ïQíÀÿNë�"@ósùIú_�Qí6ó{ó�y ó�y�ð6ñQë�F��ósñQùIÿNó�ù�|d%�ûuxsë ò²ósïQùFú���îsó{ë^ÿTü{û�ì�î�í4ì��Qñ¾ð6ñFë[ósí �sé'êë�}¾óºúºë�%Ið6ñQë¡�Qí4ósò�%�ë�}�îsíAì��Fñ�|ð6ñFë[ósí4ë@ð4ûu"^ì�%u%J�bìsÿ¢ySó�%u%�ó��cÿ��

ø � | ø ��£

Page 110: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

¤ û�üsë[ù¹ì´í6ë�"@ë^ûýü�ë^úÄü�ë�"@ð6ósí . ìYùFú¥"@óºúºë��Uó�í4úQÿ'¦ K�E ����� E ¦ � �ÀëS"@ósùIÿÔð4í6ï�"@ð=ì´òQûu�FìsíNð4û ð4ë�îsíAì��Qñ¥§¨� ûýð6ñ¹ü�ë[í6ð6ë&�ÿ6ë@ð Õª©« ìYùIú>ëÐúºîsëÐÿwòIë^ûýùQî¿ì¾ÿ6ïQòFÿ6ë@ð ó�y Õp¬­« ìsÿ¢ySó�%J%�ó��cÿ��® +�¯d° � +r.T°�± ¦ +�²�³ Õ � j �Yl ��"@ó�í6í4ë^ÿF�²ósùFúºû�ùQîÑð6ó¾ð6ñFë � "@ó{ó�í4úºû�ùFìYð6ë^ÿÀó�ylð4ñQë�í6ë�"@ë^ûýü�ë^ú¿ü�ë�"@ð6ósíÐé´ ± u *Y° � +r.T°�± ¦ +�²�³ « � j � l "@ó�í6í4ë^ÿF�Ió�ùFúºû�ùQî ð6óyð6ñQë � "@óºúºë��Uó�í4úFÿ¢¦ K E ����� E ¦ � éµw¶éu +�²�³ zwñQë[í4ë=û�ÿcìsùbëÐúºîsë=ò²ë@ð·�Àë[ë^ùgch Õ ìsùFúZ¸Ph « ûº¹¼» D � � ¦�½ D ézwñQë��Qí4ó��²ë[í6ð6û�ë^ÿÀó�ylð4ñQë��Qí4ósò�%�ë�} ìYð ñFìYùFúbð4í4ìsùFÿ]% ì�ð4ë<ð6ó¾îsíAì��Qñbð6ñFë[ósí4ë@ð4ûu"w�Qí4ó��²ë[í6ð6û�ë^ÿwì�ÿ¢ySó�%u%ýó��cÿ��¾ ±@²�°�¿�À ¦ +ÂÁ,.�-�Ác+�.T°HÃij z7�Uó<"@óºúºë��Uó�í4úQÿw"[ìsù�Å ð�ìsîsí4ë[ëB� û ð4ñ,ëÐì�"Añósð6ñQë^í=ósù ûýùIúºûu"[ë^ÿ^éÇÆ�ù¥�FìYí6ð6ûe"@ï�%�ìsí%ð4ñQû�ÿûJ}_��%�ûýëÐÿuð4ñFì�ð ð·�Uó¼"@ó{ósíAúºû�ùFì�ð4ë^ÿÇ"^ìYù�Å ðyìsîsí4ë[ëS� ûýð6ñ . ó�ù�ð6ñFëbÿ4ì�}¾ë>ÿ6ïQòFÿ6ë@ð ó�y û�ùFúºûe"@ë^ÿ^é¼zwñ{ïFÿÑð6ñFëîsíAì��QñO§¼úºó{ë^ÿÀùQósðR"@ósù2ðAìYû�ùOÈOÉ�Ê ô �2ð6ñQë�"@ó�}_��%ýë[ð6ë<òQûu�FìYí6ð6ûýð6ë=îsíAì��FñP� û ð4ñ üsë^íNð4ûu"[ë^ÿUósù¿ð4ñQë'%ýë�y¶ðcìYùFú �üsë[í6ð6ûe"@ëÐÿÀósùbð6ñQë�í4ûýî�ñ2ð��Qìsÿ ì¾ÿ6ïQòQî�í4ì��QñoéË u .�+�+r/Ì+rÀY°BÁm.�-$ÁÍ+r.T° Ãij zwñQë�ìsîsí4ë[ë�}¾ë^ù�ðwò²ë@ð·�Àë[ë[ù­"@óºúºë��Uó�í4úFÿÀìsùFú . ûJ}_��%�û�ë^ÿÀð6ñIì�ðcë[ü�ë[í ��üsë^íNð4ë&�¿ósùbð6ñFëí6û�îsñ2ð û�ÿ$ìsúTvNì�"@ë^ù�ðwð4ó>ì�ðR%�ë^ì�ÿÔð � üsë^íNð4ûu"[ë^ÿ ó�ùbð4ñQë#%�ë&y¶ðÐéÀþFósícÿ6ûJ}_��%�ûu"[û ð·�´û�ùbð4ñQëÑìsùFì�%u�ºÿNû ÿ7�Uë�� ûu%u%oð6ñFí6ó��ìT�ÀìT�¿ÿ6ó�}¾ë=ë^úºî�ë^ÿwû�ù´ð6ñQëuî�í4ì��Qñ��Qÿ6ó�ìsÿwð4ó�îsë@ð í4ûýî�ñ2ðcüsë[í6ð6ûe"@ëÐÿUð6ó�ñFìfü�ë=úQë[îsí4ë[ë=ë��ºì�"8ð %J� � é¢�cósð6ûe"@ë=ð6ñFëîsíAì��Qñ´ÿÔð4ûJ%u%�úºó{ë^ÿwùFóYðcñFìfü�ë<ìsùr�ÈOÉ�Ê ô ì�y¶ð4ë[íwð4ñQû�ÿ%úºë�%�ë@ð4ûýó�ùoéêëS� ûJ%u%�ÿNë^ëyð6ñFìYð�ð6ñQëÐÿNë_�Qí4ó��²ë[í6ð6û�ë^ÿw� ûu%J%Tì�%J%�ó�� ïFÿ<ð4óª"@ó�ù�"&%�ïFúºëyð6ñIì�ð=ð6ñQë�î�í4ì��Qñ,úQó2ëÐÿNù�Å ðuñFìfü�ëÑð4ó{ó<}�ìsùr�üsë^íNð4ûu"[ë^ÿ�ósù�ð4ñQëTí4ûýî�ñ2ð � ÿ6óRάû ÿ��4ÿ]}�ì�%u%e���fìsÿ'úºë^ÿ6ûýí4ë^ú é,Ϻï�"Añuò²ósïQùFúFÿlìsí6ëÍ"^ì�%u%ýëÐú­�HÐ ìsí4ìsù�x{ûýë�� ûu"��¬òIó�ïQùFúQÿ �cì�y¶ð6ë[íì_Ñ�ó�%�û�ÿ6ñ<}¾ìYð6ñQë�}�ì�ð6ûe"@û ìYù­Ò�ì��^ûJ}¾û�ë[í ��Ð�ìYíAìYù�x{û�ë�� ûe"&�w� ñQó�ÿÔð4ïFúºû�ë^ú©ÿNï$"AñOySó�í6òQû úQúºë^ùªÿNïQòFîsíAì��Qñ�Qí6ó�ò�%�ë�}�ÿ[é® +�/Ó/Ì¿{0�2�3uÔÖÕ \ZN­×&6 ;�N�MU>d65>a9Ç`�MFNH;�L<§ � ��ØREF«ZE Ù HÚ7Û 65>5L¥f Ø f � � N�:n^­f « f � Î Ú L�NT?ÇMU6º`TL�>w^�9a`�M 9 9 � N�:n^:n=ÇÈOÉ�Ê ô Ú Î � � � � ÷ � ô ÷ �� ;YMF=�8�6@^�9H^ � ô s �� �Ü .�-�-n¯ êëÇ�Qí4ó�üsëuð6ñQëZ%ýë�}_}¾ìbïFÿ6ûýùFîbìP�Fí6ó�òFìYòQûu%�û�ÿNð6ûe"Ñìsí6î�ï�}¾ë[ù2ð^éwÝoë@ð�Þ D úQë[ùQósð6ëuð4ñQë¾úºë[î�í6ë^ëÑó�y¬ð4ñQëZg?ð4ñüsë^íNð4ë&�>û�ù Ø éi�cósð6ë=ð4ñFì�ð¡ß D Þ D � Î7à � éÝoë[ð,á D úºë[ùQósð6ë$ð6ñQë'�Qí4ósòIìYòQûu%ýûýð·����� ñQë^ù¿ð·�Àó úºû ÿNð6û�ù�"8ð ë�%�ë�}¾ë^ù�ðAÿĸ K ìsùFúB¸ ô ìYí4ë��Qûe"HxsëÐú¿ïQùFûºySó�íF}_%u�¿ì�ðwí4ìsùFúºó�}ySí4ó�} « �ºð4ñFì�ðcò²óYð4ñS¸ D ìsùFúS¸ ô ìsí6ë=ìsú�vNì�"@ë^ù2ðÀð4óSgAé'êë�ñFìfü�ë��

á D � âdã .ô$äâæåôHä � Þ ôD ÷ Þ DÎ ô ÷ Î ��có��ç"[ósùFÿ6û úºë[íÑð6ñQëbë&���Ië�"8ð4ë^ú�ù{ï�} òIë^í ó�y�"@ó�}Z}¾ó�ù�ùQë[û�îsñ{ò²ósïQíAÿ�ð4ñFì�ð¾úºû ÿÔð4ûýù�"@ðyë�%ýë�}¾ë[ù2ð4ÿ'¸ K ìsùFú�¸ ô ñFìfü�ë� ñQë^ùbð4ñQë��´ìYí4ë¡�Fûu"Hx�ë^úbïQùQûJySósí }Z%u�bìYð í4ìsùFúºó�}çySí6ó�} « éizwñQû�ÿ��2ïFìsù2ð6ûýð·�¿û�ÿcîsû�üsë[ù´ò��è D á D � øÎ ô ÷ Î õè DJI,K � Þ ôD ÷ Þ D �Ï{û�ù�"@ë=ð4ñQû ÿR�2ïFìYù2ð6ûýð·�¿ò²ë@ð6ð6ë[í%òIë�%�ë^ÿ4ÿÀð6ñFìsù ���Uë=î�ë@ð

øÎ ô ÷ Î õè DJI,K � Þ ôD ÷ Þ D � �

ø � | øsø �

Page 111: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

zwñQëcùFósù�|/ð6í4ûýü{û ì�%�"[ó�}_�Ió�ùQë[ù2ð�û�ù¾ð6ñQë%ûýùQë��2ïFì�%�û ð·�yìYò²ó�üsëwû ÿcß ãHéê éëÏ{ïFò�vÔë�"@ð�ð6ó�ð4ñQë�"[ósùFúºûýð6û�ósùyð4ñFì�ð7ß D Þ D � Î � �ð6ñFû�ÿc��ïIìYù2ð6ûýð·�Ñû ÿi}¾û�ùQûJ}¾ûu�[ëÐú_� ñQë[ù¿ì�%J%ºð4ñQë�Þ D Å ÿ�ìsí6ë ë���ïIì�%�zwñQû ÿ�û ÿÄ�Qí4ó�üsëÐÿ�ü{û�ì�ì�ÿNð4ìsùFúQìYíAúyûýùFë��2ïFì�%�ûýð·�Çx{ùQó�� ùìsÿÀð4ñQëBìÀìYï$"Añr�r|·Ï�"Añ��ÀìsíNð �%û�ùQë��2ïFì�%ýûýð·�séUþQósícìsù���ð·�Uó¾í4ë^ì�%�üsë�"@ð6ó�í4ÿ ¿ � í@î KTE ����� E î õ�ï ìYùFú<ð � í�ñ K�E ����� E ñ õ�ï �ð6ñFëSìÀìsï�"Añ���|·Ï�"Añ��wìYí6ðF��û�ùQë��2ïFì�%ýûýð·�ªÿ6ìT�ºÿ ð4ñFì�ð í ¿ E ð ï ô � �Fò ¿ ò ô à ò ð ò ô é'ó�����%u�{ûýùQî´ûýð$ð4ó ¿ �ôí Þ K�E ����� E Þ õ$ïìYùIúOð �õí ø E ����� E ø ï ���Àë=îsë[ð �aß õDuImK Þ D ô � � ß õDuImK Þ ôD éizwñ{ïFÿwð4ñQë�û�ùQë��2ïFì�%ýûýð·�>ìYò²ó�üsë<ò²ë�"@ó�}¾ë^ÿ��ø�ö õè DJImK Þ Db÷ ô ÷ è D Þ D � � Î ô ÷ Î �ø Î ô � ô� ÷ Î � � � Î ô ÷ Î �ø Î#ù � ô� ÷ �ú � � ÷ �zwñ{ïFÿ7�Àë�ñFìfüsë Î � � � � ÷ � ô ÷ �� �Qí4ó�ü{û�úQë^ú � ô s �� �

)#*,+�-�.�+�/10�2�35ûçü 658�9&:S;�=�65:�>�?¡A �bC D E » D UG õDuImK >bL�9�MF9ÇN�MF9ÇN�>iQS=T?U> õ�ý öaþ ÉUÿö é þ É õ ;�=�VXW�:Y=�QZ6@N�V[?iáÌ=]\�^�9a`�M 9 9ZN�>ÍQ_=�?H> >bL�N�>i?�N�>d6e?b\HWf[A�gih{j �Yl fHá �@C D i� o D G f�q � 6 \ �¢s � ��it������� � �������������������� �"!$#&%'���������êëcùQó��p}¾ó�üsëwósù¾ð4ó�ð6ñQë$ì�%�îsósí4ûýð6ñ�}¾ûe"wüsë[íAÿ6ûýó�ùFÿ�ó�y�zwñQë^ósí4ë�}�ÿ ø � é (=ìsùFú ø � é*)ºé�êë%ÿÔðAì�ð4ë ð6ñQë��Qí6ó�ò�%�ë�}¼ùQë&�{ð^é

® ±@²�° ¶ + ¦ - ¶ ±�À,+k-n¯ ´ +�+ ¶.- / -10@-n/Ó-nÀ ¦ - ¶ +�²�³24365,798;: Ñ�ósû�ù2ðw�IìYû�í4ÿZA �bC D E o D f$g�h j �Yl G � ûýð6ñ¹ë^ì�"Añ¼�Fìsûýí=ò²ë[û�ùQîÄúºû ÿÔð4ûýù$"8ðÑìYùIú¼�IìYíAì�}¾ë@ð4ë[íAÿ ìYùFú � é< 3=8�>?: ó %ýû ÿNð%ó�y¬ì�%u%��²ó�%u�2ùFó�}¾û�ì�%�ÿëáªó�y�úQë[îsí4ë[ë�ìYðR}yó2ÿÔð ð4ñFì�ð%ÿ4ì�ð4û�ÿ]yb�Çá �bC D Í� o D ySó�í%ì�ðR%�ë^ì�ÿÔð� ü�ì�%�ïQë^ÿwó�y,gch¥j �Yl é� ïQí�î�ó�ì�%ºû�ÿ�ð4óuîsë[ðTì�ÿNó�%ýïQð6û�ósùyð6ñFìYðÍ�Àósí x{ÿë�Fí6ó�ü{û úºë^ú �cs � �� � ÿ6óuìsÿ�ð4ó�}¾ìYð "AñPzwñQë^ósí4ë�} ø � é@) é,zlóºúQìT�#�Àë� ûu%J%�ÿ6ë@ð6ðF%�ë'ySósí%ìsù�� � �BA � � �� éÍzwñQëuì�%ýî�ósí4û ð4ñ�} û ÿ ì�"8ð4ïFì�%u%u�O�Qí4ë@ð6ð·�>ÿNûu}_��%�ësé�êë�}¾óYð6û�ü�ì�ð4ë�û ð%ò��P%�ó{ó�x{û�ùQîì�ðcìyð4ó��P�Qí4ósò�%�ë�}©é���7�DC7�]� E ���m�GF����?HJI·�,KÏ{ï����Ió2ÿNë<ð6ñFëw}¾ëÐÿ6ÿ4ìYî�ë¡�²ó�%u�{ùQó�}¾û ì�% û�ÿ ìB�²ó�%u�2ùFó�}¾û�ì�%�á K ìYùFú>ð6ñFë<ë^í6í4ósíAÿUûýù´ósïQí7�²ósû�ù2ð7�IìYû�í4ÿwì�"@ð6ïFì�%J%u�O"[ó�}¾ëySí4ó�} ìÄÿNë�"@ó�ùFúk�Ió�%J�{ùQó�}¾û�ì�%�á ô éªÆ]ðÑû ÿÇ"&%�ë^ìsíuð4ñFì�ðÑó�ïQí ì�%ýî�ósí4û ð4ñ�} ÿ6ñQó�ï�%�ú¹ó�ïºðF�Fïºðyì�ÿÑìYùIÿ]�Àë[íAÿ7á K ìYùFú­á ô� ì�ÿ6ÿ6ï�}¾û�ùQî¾òIósð6ñ<�Ió�%J�{ùQó�}yû ì�% ÿ ìYí4ë<í6ë��Qí6ëÐÿNë^ù2ð6ë^ú>ó�y¶ð4ë[ù´ë[ùQó�ïQîsñ éi�có��"úQóZ�Àë�"@ó�}yë=ï��­� ûýð6ñ©ìYù©ì�%�îsó�í6ûýð6ñ�}� ñQó2ÿNë¾ósïQðF�Qïºð û�ÿÂ� zwñQë¿ìYùIÿ]�Àë[í=û ÿ�á K�� à �ML á ô � à �ON�zwñQëP~Àó{ó�%�ë^ìYù �ML ûýùð4ñQë>ÿNð4ì�ð4ë�}¾ë[ù2ðÑÿ6ë[ë�}¾ÿ�ð6óªò²ëñFìsí4ú¹ð4ó¼"^ì��ºð4ïQí6ë©ì�%�îsë^òQíAìYûe"[ì�%u%u�séÄêë´ìYðNð4ë�}_�ºð¾ð6ó¥"[ì��Qð6ïQí4ë¿ð4ñQû�ÿyò��¹ûýù2ð4í6óºúºï�"[ûýùFîÌ> Û =¿ü�ìYí4û ìYò�%�ë^ÿ C ìsùFú oí4ë��Qí4ë^ÿ6ë[ù2ð6û�ùQî©ð4ñQë¿ð·�Àóª"@ó{ósíAúºû�ùFì�ð4ë^ÿ�ó�y ð6ñQë�FìYû�íAÿ=ð6ñFìYðyìsí6ë�î�ûýü�ë[ù¹ð6óïFÿÑìsùFú�ùQósð6ûe"@û�ùQîªð6ñIì�ð ûýðÑû ÿÑëÐìsÿF�Äð4ó"@ó�}¾ë<ï��<� ûýð6ñªìsù©ì�%ýî�ë[òQíAìYûe"#M 9&VJN�>�6@=�:¿ë&����% ìYû�ùQû�ùQî�ì�%u% ð6ñQë�î�ûýü�ë[ù<�Ió�ûýù2ðAÿ[é

ø � | øsø�ø

Page 112: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

zwñQë�î�ûýü�ë[ùbÿ6ë@ðcó�y,�²ósû�ù2ð4ÿ ÿ4ì�ð4û�ÿ]yb�Y� � o D ÷ á K �bC D ] à � o D ÷ á ô �bC D Fi� ���� Æ�ù>óYð6ñFë[íÍ�ÀósíAúQÿ���} ï�% ð4ûJ��%ýûe"[ìYð6û�ósùO"^ì��ºð4ïQí6ëÐÿ¬ð4ñQë �ML ó�y�ð·�Uó�í4ë�% ì�ð4ûýó�ùFÿ émÆ�ùIúºë[ëÐú�ûºy��Àë¡"^ìYù_(FùIú¾ð·�UóÇ�Ió�%J�{ùQó�|}¾û�ì�%�ÿ,á K ìsùFúÇá ô ÿ6ï�"Añ>ð6ñFìYðÀð4ñQë�ìYò²ó�üsëcí4ë�% ì�ð4ûýó�ù>û ÿwÿ6ìYð6û ÿ·(FëÐú¿ò��¿ì�%u%Y�FìYû�íAÿUó�y��²ósû�ù�ðAÿ��{ð4ñQë[ù�Uë'"@ó�ï�% ú>ó�ïºðF�QïQðá K ìYùFúSá ô ìsÿ%ósïQí$ÿNó�%ýïºð4ûýó�ù�� ìYùFú´ð4ñQû�ÿ��Uó�ï�% úªÿNë^ë�}�ÿ ð4ó¿òIë îsó{óºú©ë[ùQó�ïQîsñ�é � ê,ëB� ûJ%u%,�Qí6ó�ü�ë'%�ìYð6ë[í%ð6ñFìYð%ð4ñQû�ÿ�Àósï�% úÄÿ6ïQPP"@ë�� òQïQð=ùFó��Ö�Àë ð6ïQí4ùªð6óbð6ñFëB}¾ósí4ëuûu}_�Ió�íNðAìYù2ð'�2ïQëÐÿÔð4ûýó�ùoé zwñQë_�2ïQë^ÿNð6û�ósùÄû ÿ��²ñFó�� úºóO�ÀëÇ(IùFúÿ6ï�"Añ�²ó�%u�{ùQó�}¾û ì�% ÿ�NzlóÂ(FùFú­á K ìYùFú­á ô �,�Uë>ë&���FìYùIúð6ñQëO�2ïFì�úºíAì�ð6ûe"¾ë&���Qí4ë^ÿ4ÿ6ûýó�ùìsòIó�ü�ë���ìYùFú¹ÿ6ë[ë�ð4ñFì�ðuð4ñQë[í4ëP} ïFÿÔð ë&�ºû�ÿNðuð·�Àó�²ó�%u�2ùFó�}¾û�ì�%�ÿ�§ �bC ìYùFú�R �bC ÿ6ï�"Añ>ð4ñFì�ð ð4ñQë'ySó�%u%�ó�� ûýùQîS"[ósùFúºûýð6û�ósùIÿwñQó�% ú��ø écþQósí ë^üsë^íF�Sgch¥j �Yl � o ôD ÷ § �@C$D æo D � R �@C$D Í� � é� éRzwñQë[í4ë=ë&�ºû�ÿNð��Ió�%J�{ùQó�}¾û�ì�%�ÿëá K ìsùFúZá ô ÿ6ï�"Añbð6ñFìYðS § �@C Í� á K �bC � á ô �@C éS R �bC c� á K��@C à·á ô �bC éT écúºë[î � § � ìYùFú©úºë^î � R � �� éó%ÿ=û�ù¥�Qí6ë^ü{ûýó�ïFÿ¡"^ìsÿ6ë^ÿ � ë�é îIéJ�oð6ñQë¾êë�%e"Añ�|a~Àë^íF%�ë�x�ì�}_�ì�%�îsósí4ûýð6ñ�} ���Àëyûýî�ùQósí4ëB"[ósùFúºûýð6û�ósùIÿ<ð6ñFìYð�ÿ6ë[ë�}¨ð6ó©ò²ëñFìsí4ú¾ð4óÑë^ù�ySósíH"@ë%ìsùFú�ñQó��Ië%ð6ñQë<í4ë^ÿNðUÿNï9PS"[ë%ð4ó#(FùIú¾ð6ñQë=ÿ6ó�%�ïºð6û�ósù¿ìsùr���wìT�sémÆ�ù¿ð6ñFë$ìYò²ó�üsë$ÿNë[ðUó�y�"[ósùFúQû ð4ûýó�ùFÿ��� ø ìYùFú � T ìYí4ëyëÐìsÿF�©ð6óªë^ù�ySósíH"@ë � �ÀëS� ûJ%u%�ÿ6ë[ë¿ÿ6ó´ÿ6ñQósí6ðF%u� �oòFïºðB"@ó�ùFúºûýð6û�ósù � � û ÿ�ùQósðVUPÏ{ó­�ÀëZ� ûu%u%�ó�}¾ûýð"@ó�ùFúºûýð6û�ósù � � ìsùFúB%ýó{ó�x#ySósíħCìYùFúWR ÿ4ì�ð4û�ÿ]yb�{ûýùFî$ð4ñQë í4ë�}�ìYû�ùQû�ùQîw"[ósùFúQû ð4ûýó�ùFÿ[é,zwñQû ÿÄ}¾óYð6û�ü�ì�ð4ë^ÿ'ð6ñFëcySó�%J%�ó�� û�ùQîì�%�îsó�í6ûýð6ñ�}´é

Ë 0X+$-$.�±b°�*m/ ¯a-$.P°�-�à Ám.�- ð 0�+�/ ³/ °�+rÁõ0$³ (FùFú­§�ìYùIú�R­ÿ6ï�"Añ>ð4ñFì�ðZYªgih{j �Yl �S o ôD ÷ § �bCnD ·o D � R �bCnD i� � �S úºë^î � § � �FìYùIúS úºë^î � R � �� ��Qí6ó�ü{û úºë^úbÿNï$"Añ´ì_�Fìsûýíwë��{û ÿNð4ÿ^é/ °�+rÁ 2�³ þFì�"8ð4ósíÀð6ñQë��²ó�%u�{ùQó�}¾û ì�% o ô ÷ § �bC æo � R �bC éiÆay�ûýð¢y�ì�"8ð4ósíAÿwûýù2ð6ó � o ÷\[ �bC F à � o ÷ � �@C ] �Qó�ïºðF�QïQð[ ìYùIú � éó%ÿ$û�ù©ð6ñQëZ"[ìsÿ6ëuó�y¬ð6ñQëuêë�%e"Añ�|æ~Àë[í %ýë�xfì�}_�Äì�%�îsósí4ûýð6ñ�}­���ÀëuñFìfü�ë=ð6ó´ìYí4îsïQë=ð4ñFì�ð$ð6ñQû ÿ$ì�%ýî�ósí4û ð4ñ�} û ÿ_9^]`_&6@9�:�>ìYùIúa_H=�MUMF9b_�>�ìYùFúS�Àë<îsóuð4ñQí4ósïQî�ñ�ð6ñQë=ïFÿ6ïFì�%²ÿNð6ë��FÿUð6ó¾úºóyÿ6óFéë~Uð·���2ð6ñQû ÿ7�FìYíAìsúQûýî�}­û ÿÀùQóYð ÿ]�²ë�"[û�ì�%²ð6óB"[óºúºûýùFîð6ñFë[ósí ���fòQïQðlíAì�ð6ñFë[íoð4ó%ì�%�îsë^òQíAìYûe"¬ì�%�îsósí4ûýð6ñ�}�ÿ���� ñQë^í6ëTósùQëÍ(FùFúQÿlósïºð'ë[ùQó�ïQîsñ�û�ù�ySó�íF}�ì�ð4ûýó�ùuìYò²ósïºð�ð6ñQëwÿNó�%ýïQð6û�ósùð6ó�ó�ïºðF%�û�ùQëÑìYùªì�%ýî�ósí4û ð4ñ�}­�QìYùFúbð6ñFë[ùÄÿ6ñQó��cÿÀð6ñFìYðcð6ñFë�ûýù�ySó�íF}�ìYð6û�ósù©û�ÿ%ÿNïQPP"[ûýë^ù�ð%ð6ó�ñFìfü�ëw�FûýùQùFë^úªúºó�� ù´ð6ñFëìYùIÿ]�Àë[í ÿ6ë��Fìsí4ìYð6ë�%u�séêëuÿÔðAìYí6ðwò��>úQë^ÿ "@í4ûýòQû�ùQîyð6ñFëuì�%�îsósí4ûýð6ñ�}¾ûe"¡"[ó�}_��%�ë&�ºû ð·�>ó�y'ð6ñQë=ð·�Àó�ÿÔð4ë��Fÿ ìsòIó�ü�ë��/ °�+rÁõ0$³ êë¡"[ìsù>ì����Qí6ó2ì�"Añ¾ð4ñQû�ÿc�Qí4ósò�%�ë�}¼ð4ñQí6ó�ïQîsñO%ýû�ùQë^ìsíUì�%ýî�ë[òQíAìQélê,ëw� û�ÿ6ñ�ð4óÇ(FùIúS�Ió�%J�{ùQó�}¾û�ì�%�ÿ¢§�ìsùFúRZ�²ó�í$íAì�ð4ñQë[í%ð6ñQë^ûýí�"[ó2ë�PP"@û�ë[ù2ð4ÿ<ÿNó¿ð6ñFìYð$ð4ñQëZ"[ósùFÿNð6íAìYû�ù2ð4ÿ%ó�ycÏ2ð4ë�� ø ìYí4ë ÿ4ì�ð4û�ÿ](Fë^úoéwzwñQëZ"@ó�ùFÿÔð4í4ìsûýù2ðAÿìYí4ëR%ýû�ùQëÐìYíwûýù>ð6ñQë'"@ó{ë�PS"[ûýë^ù2ð4ÿ � ð4ñQósïQî�ñ>ùQósð¢%�û�ùQë^ìsíUû�ù CnD Å ÿwìYùFú o D Å ÿ ìYùIú>ÿ6óÑûJy'ìÑÿ6ó�%�ïºð4ûýó�ù>ë&�ºû ÿÔðAÿ��2ósùFë"[ìYù´ò²ë'ySósïQùFú´ë�PS"[ûýë^ù2ðF%u�sé

ø � | øsø �

Page 113: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

/ °�+rÁ 2�³ zwñQû ÿ%ÿF�Ië�"@ûJ($"#"^ìsÿ6ë�û�ÿ%ë^ìsÿF�¿ð4ó�ñFìYùIú�%ýëÑòFìsÿ6ë^ú©ó�ùbð4ñQë ÿNð4ìsùFúQìsí4úySósí }Ñï�%�ìZySó�í�"@ó�}Z�Fïºð6û�ùQî¿í4ó{óYð4ÿcó�y��ïIìsúºíAì�ð4ûu" ë��2ïFìYð6û�ósùFÿ^éP�có��Àë[ü�ë[í����Uë_� ûu%J%Uì����²ë^ì�%¬ð6óÄì<}¾ósí4ë¾îsë[ùFë[íAì�%�ÿ6ó�%�ïºð6û�ósùoéSÆ]ð�ð4ïQí4ùFÿ�ósïQð�ð6ñFìYðð6ñQëbð4ì�ÿ]x�ó�yRy�ì�"@ð6ósí4û�ùQî�} ï�% ð4ûýü�ìsí6û ì�ð4ë�²ó�%u�{ùQó�}¾û ì�% ÿÑû ÿ�ÿNó�%ýü�ìsò�%ýëbüsë^íF�¹ë PP"[ûýë^ù�ð %J� ûýù`îsë[ùFë[íAì�%/éÓzwñQí6ë^ëûýùFúQë��²ë[ù2ð¡�Àósí xºÿ ûýùÄð6ñQëyë[û�îsñ2ð6û�ë^ÿ�� ¤ í4û�îsósí4û�ë[ü¼j ! T l ��Ò�ì�%ýð6ó�ySë[ùÓj ( c l ��ìYùFú�Ýoë[ùIÿÔð4í4ìªj dO( l � ìsúQúQí6ëÐÿ6ÿ6ë^ú´ð4ñQû�ÿ�Qí6ó�ò�%�ë�}©é,óÀð¬ð4ñQëcü�ë[í �#%ýëÐìsÿNð��sð6ñQë�� ÿ6ñQó�� ð4ñFì�ð�ë^üsë^íF�#�²ó�%u�{ùQó�}¾û ì�%Qû�ù¿ì'"@ó�ùFÿÔðAìYù2ð�ù{ï�}Ñò²ë[íTó�y üfìsí6û ìYò�%ýëÐÿ"[ìYù,òIë_y�ì�"8ð4ósí4ë^úÄû�ùð6ûu}¾ëS�Ió�%J�{ùQó�}yû ì�%�û�ùð6ñQë�úºë^îsí4ë[ë¾ó�yUð6ñQë¾û�ù��Qïºð#�²ó�%u�{ùQó�}¾û ì�%/é_zwñFû�ÿ=û ÿ�ÿNï9PS"[ûýë^ù2ðySósí%ó�ïQíw�QïQí �Ió2ÿNëÐÿ[é'~Àïºð<û�ù�"^ìsÿ6ëÇ�só�ï�"[ìsí6ë��nÒ�ì�% ð4ó�ySë^ùìYùFú�z�íAìYî�ë[íÇj ( £ l î�ûýü�ëÇ}Ñï$"AñÿÔð4í6ó�ùQîsë^í%í4ë^ÿ6ï�%ýð4ÿ��ë^ÿ4ÿNë^ù�ð4û�ì�%J%u��îsû�ü{ûýùFîyí4ïQùQùFûýùQîyð4ûJ}¾ë^ÿÀð4ñFì�ð%ìsí6ëw�²ó�%u�2ùFó�}¾û�ì�%�ûýù´ð4ñQëuúºë[î�í6ë^ë$ó�y�ð4ñQë��Ió�%J�{ùQó�}¾û�ì�%�ÿ#N�:n^$ð6ñFëù2ï�}Ñò²ë[íTó�y�üfìsí6û ìYò�%ýëÐÿ����Qí6ó�ü{û úºë^úZ��ósïS%�ë@ðTð4ñQë�} �Qûe"Hx ð6ñQë$í6ë��Qí6ëÐÿNë^ù2ð4ì�ð4ûýó�ù ó�y�ð6ñQë��Ió�%J�{ùQó�}yû ì�% ÿ^é,ó"ùQóYð4ëósù�ð4ñQëªúºë��²ë[ùFúQë[ù�"[ë´ó�ù�ð4ñQëO(Ië�% ú`ÿ6ûJ�^ësé{Æay$ð6ñQë(Fë�% ú`û�ÿB(FùQûýð6ëªìsùFú�ñFì�ÿ_"AñFìYíAì�"@ð6ë[í4û ÿÔð4ûu"�á � û/é ëséu��ð6ñFë(Fë�% ú¿û ÿ ìYùbë&�{ð6ë^ùFÿNû�ósùbó�y.egfPySó�í ÿNó�}yëw�Qí4ûJ}¾ë¢á ð6ñFë[ùbð6ñQë=í4ïQùQùQû�ùQî ð6ûu}yë=û ÿ¢�Ió�%J�{ùQó�}yû ì�% û�ùÇá©ìYùFú>ð6ñFë%ýó�î�ìYí4ûýð6ñ�}¼ó�yoð4ñQë¡(Fë�% ú>ÿ6ûJ�^ëséëÆ]ð�"[ìYù´ì�% ÿNó òIëw}�ìsúºë¡�QïQí4ë�%u�S�Ió�%J�{ùQó�}¾û�ì�%Iû�ù¿ð4ñQë¡%�ósî2ìYí4û ð4ñ�}�ó�yoð4ñQë¡(Fë�% úÿNûu�[ë��FûJyi�UëÑì�%J%�ó���ð6ñQëyì�%�îsósí4ûýð6ñ�} ð6ó¿ò²ëÑíAìYùFúQó�}¾ûJ�^ë^ú�é�ó�%J%'ó�y�ð6ñFû�ÿ$û�ÿ%ûýùFñQë[í4û ð4ë^ú­ySí4ó�}�ð6ñFëÑïQùFúQë[í %J�{û�ùQîì�%�îsósí4ûýð6ñ�}�ÿ¢ySósíRy�ì�"8ð4ósí4ûýùFîyïFùQûýü�ìsí6û ì�ð4ë��Ió�%J�{ùQó�}yû ì�% ÿ � ÿNë^ëPj ø d�� ø )r� � ( l ë[ð "Yé é � üsë^íwð6ñQëÑí4ìYð6û�ósùFì�%�ÿ��ºð6ñFëì�%�îsósí4ûýð6ñ�}�ÿ=í4ïQù�úºë@ð4ë[í }yû�ùQû ÿÔð4ûu"^ì�%u%J�,ûýù¹ð4ûJ}¾ëP�²ó�%u�{ùQó�}¾û ì�%¬û�ù¹ð6ñQë>ûýù��Fïºð ÿ6ûJ�^ë���ìYî�ìsûýùû�ùQñQë[í4ûýð6û�ùQî©ð6ñQë^ûýí�Ië^í]ySó�íF}�ìYù$"@ë¡ySí6ó�}�ð6ñQë�ïFùQûýü�ìsí6û ì�ð4ë'"^ìsÿ6ë��Qÿ6ó�%�üsëÐú>ò��OÝ�ë[ùFÿNð6íAì���Ý�ë[ùFÿNð6íAì��ºìYùIú<Ý�ó�ü�ìsÿF�ôj dOd l é~wì�"Hxbð6ó>ð6ñQë¾ì�%�îsó�í6ûýð6ñ�}¨ì�ð<ñFìYùIú�� ùQóYð4ûu"[ëuð6ñIì�ð#Ï2ð6ë�� ø í4ë��2ïQû�í6ëÐÿ ð4ñFì�ð�ì¿ÿ6ó�%�ïºð6û�ósùÄë��ºû�ÿNð���ìYùIú�Ï2ð6ë�� � ñFìsÿ$ìÿ6ó�%�ïºð6û�ósù´ósù�%u��ûJy�ìZ�²ó�ÿ4ÿNû�ò�%�ë¡y�ì�"8ð4ósí4ûJ�Ðì�ð6û�ósù>ë&�ºû�ÿNð4ÿ^éi~Àë�%�ó����Àë=ìsí6î�ïQë$ð6ñFìYðÀð4ñQëuÿ6ó�%�ïºð6û�ósùFÿwúºó¾ë��{û ÿNð ì�ÿ6ÿ6ï�}¾û�ùQîósïFí��Qí6ó�ò�%�ë�} û�ùFÿNð4ìYù$"@ë=û�ÿ�(QðNð4ûýùQî¾ð4ñQë��Qí4ó�}¾û ÿNëÐÿUó�ylð4ñQë=ð6ó��O�Qí6ó�ò�%�ë�}©é���7�DC7��� h¼�i������in���R�����{�;jO�kI]�i�i���·����K jH�i� ����� ���m�GF����;HJI]��KêëuìYí4îsïQë$ð6ñQë#"[ósí4í6ë�"8ð4ùQë^ÿ4ÿÀó�y�ð4ñQë=ð·�Àó¾ÿNð6ë��Fÿ û�ù©ósíAúºë[íÐél 0@¿�±�/10�2�3nm$o :n^�9�M�>bL�9'L�W ;�=�>bL�9&?H6e?B=]\�>bL�9Ç>a=�Ww;nMF=�×&VJ9�Q Ú N_?�=�Vqp�>�6@=�:�>æ=Wr$>æ9æ;\sO9�t�6e?U>@? têëuì�%�í6ëÐìsú��>ìsí6î�ïQë^ú>ð6ñFû�ÿ û�ù­}¾óYð6û�ü�ì�ð4ûýùQî¾ð4ñQëuì�%�îsó�í6ûýð6ñ�}<�Qÿ6ó_�Uë��Àósù�Å ðcí4ë^ÿNð4ìYð6ë<ð6ñQë��Fí6ó{ó�yÔé¬êë#}¾ó�üsë=ó�ù>ð4óð6ñFëB}¾ósí4ëyûJ}_�²ósí6ð4ìYù2ð'"&% ìYûu}<��� ñFûu"AñÿÔðAì�ð6ëÐÿcð4ñFì�ðuìsùr�ªÿ6ó�%�ïºð6û�ósùÄð6óÂÏ2ð6ë�� ø �²ñIìsÿ$ð6ñQë¥�Ní4û�îsñ2ð �_y�ì�"8ð4ósí4ûJ�Ðì�ð6û�ósù�ézwñQû ÿR"&% ìYûu} û ÿwûJ}_�²ósí6ð4ìsù�ðcû�ù´ð6ñFìYð û ðAÿ��Qí4ó2ó�ylî�ë[ùQë^í4ì�%ýûu�[ëÐÿUùIì�ð6ïFí4ì�%J%u��ð6óyð4ñQëÂ�NùQó�ù�|/ð6ó��P"[ì�ÿNë��Qél 0@¿�±�/10�2�3nu Õ \¡§ N�:n^�R N�MF9ON�:�W?�=�V@p�>d6@=�:�?B>æ=vr$>æ9a;wsªN�:n^wáp6e?PN�:�WÂ^�9a`�MF9H9 ;�=�VXW�:n=�QB6@N�Vi>bL�N�>wN�`�MF9H9U?Û 65>bL­>bL�9w`�658�9&:O;�=�65:�>c?�9&>7=�: � q �� � ø ;�=�65:�>�? Ú >5L�9&: o ÷ á �bC f o ô ÷ § �bC æo � R �bC t´ +�/Ó¿�.yxij L ë�"[ì�%u%Àð6ñFìYðÑð4ñQë´ìsòIó�ü�ë"�%�ìsûJ} û ÿ ìÿ]�²ë�"[û�ì�%ýûu�^ìYð6û�ósù�ó�yO�F~Àë��^ósïºð�Å ÿuð6ñQë^ósí4ë�} û�ù�ð6ñFë��% ìYùFë���zÿ6ó�}¾ë@ð4ñQûýùFîÓ�Uë,ì�%u%ýïFúQë^ú�ð4ó�ûýù"ósïQí<"@ó�üsë^í4ìsîsë©ó�yuì�%ýî�ë[òQíAìYûe"U|]îsë^ó�}¾ë@ð4íF�Ó"[ó{úQë^ÿ^é zwñQû ÿ�ð6ñFë[ósí4ë�} � y�ì�}¾ûJ%u��ó�yð6ñFë[ósí4ë�}�ÿ���í4ë^ì�%J%u� ÿ4ìT�{ÿ�ð6ñFìYðUð·�ÀóÑì�%ýî�ë[òQíAìYûe"�"@ïQí4üsëÐÿ�û�ù¿ð4ñQë���% ìYùFë¡"[ìsù¿ùQósðÀÿ6ñFìYí4ë ð6ó{óB}¾ìsù��Z�²ósû�ù2ð4ÿc� û ð4ñQósïQðÿ6ñFìYí4ûýùFîyìZ"@ó�}Z}¾ó�ù"@ó�}_�Ió�ùQë[ù2ð^é íAì�ð6ñFë[í�~Àë�%�ó����Uëw(FùIúbìB�Qí4ó2ó�yló�y�ð6ñFû�ÿ¢y�ì�"8ð ûýùbð6ñFû�ÿ ÿF�Ië�"@û ì�%�"^ìsÿ6ësé�ê,ë'� ûu%J%îsë^ùQë[íAì�%�ûu�[ë$ð6ñQë��Qí4ó{ó�y�ìB%�ûýðNðF%�ë#}¾ósí4ë��{òQïQð%ùQóYðR"[ó�}_��%�ë@ð6ë�%J���Qò���ð6ñFë�ë[ùFú´ó�ylð6ñQû ÿ�%�ë�"@ð6ïQí4ëséÜ .�-�-n¯ ~Àë&ySósí4ë��Àëuîsó�û�ù2ð6ó�ð4ñQëÇ�Qí4ó{ó�y¬ó�y�ð4ñQû�ÿ��FìYí6ð6ûe"@ï�%�ìsí�"[ì�ÿNë���%�ë@ð�Å ÿ%ÿ6ë[ëÑñQó�� �Àë#}�ìT�<�Qí6ó�ü�ë<ð6ñFìYð<ÿ6ó�}¾ë�²ó�%u�2ùFó�}¾û�ì�%oó�y�ð4ñQë#ySó�íF} o ÷ á �@C úºûýü{û úºë^ÿ$ÿNó�}¾ëuóYð4ñQë[íR�²ó�%u�{ùQó�}¾û ì�%/é�zwñQëÇ"&% ìsÿ4ÿ6ûu"^ì�%��wìT�¿ð6óbúºó�ð6ñFû�ÿ��Fû ÿ ð4óð6ñFûýù�x ó�y²ð6ñQë��²ó�%u�{ùQó�}¾û ì�%|{ �bC�E o�i�po ô ÷ § �@C æo � R �bC ìsÿ�ìw�²ó�%u�{ùQó�}¾û ì�%}{ � o� ó�ù�%u�uûýù o � û ð4ñ_"[ó{ë PP"@û�ë[ù2ð4ÿð6ñIì�ð ñFì����Ië^ù>ð4óyò²ë'ySí4ó�}~e|�$j C l éizlóB�Fí6ó�ü�ë%ð4ñFì�ðcÿ6ó�}¾ë¡�²ó�%u�{ùQó�}¾û ì�% o ÷�� úºû�ü2û úºëÐÿZ{ � o� ���Àë<ùQë[ëÐú¿ð4ó¾ÿ6ñQó��ð6ñIì�ðW{ � � B� � é�Æ�ù�ósïQíZ"[ì�ÿNë���ð4ñQû�ÿyÿ4ìT�{ÿ#�Uë´ÿNñQó�ï�% ú{"@ósùIÿNû úºë[íÑð6ñQë<�2ïFìYù2ð6ûýð·� � �@C _� { �bC�E á �@C ] �i� ñQûe"AññFì����Ië^ùFÿ<ð6ó©ò²ë¿ì<�Ió�%J�{ùQó�}yû ì�%�û�ù C ìYùFúÿNñFó��Cð6ñFìYðuû ð�û ÿ'�[ë^í6óIéZ�%ó�� ð6ñFëP��ïFë^ÿNð6û�ósùñIìsÿ<ð6ïFí6ùQëÐúû�ù2ð6ó©ósùFëìYò²ósïQð ÿ6ñQó�� û�ùQî ìZ�²ó�%u�{ùQó�}¾û ì�% ûýù C û�ÿ7�^ë[í4óFéëzwñQë�ÿÔðAìYùFúFìYíAúP}¾ë@ð4ñQóºúPySó�íwð6ñQû ÿ ÿÔð4ë��´û�ÿUð4óyò²ósïFùFú¿ð4ñQë�úºë[î�í6ë^ëó�y � ySí4ó�}¼ìYò²ó�üsë��sìYùFú�ÿ6ñQó��`ð6ñFìYð � ñFì�ÿÄ}¾ósí4ë��[ë^í6ó{ë^ÿ¬ð6ñFìsùyûýð4ÿUúºë[î�í6ë^ëséëzwñQû ÿ¬û�ÿTë&�Qì�"@ðF%u�Ç� ñFìYðÍ�Àëcúºó�òIë�%ýó���é

ø � | øsø T

Page 114: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

Ýoë[ð � �bC ¢� { �bCmE á �@C F é7~c�´û�ùFÿ]�²ë�"@ð6û�ósù����Uë�ùQósð6ë�ð4ñFì�ð � �@C û ÿcì_�²ó�%u�2ùFó�}¾û�ì�%oó�y¬úºë^îsí4ë[ë�ì�ð�}¾ó2ÿÔð �� û�ù C é�có��Ö"@ó�ùFÿNû úºë^ícìYù´ûýùFúQë&�gUÿNï�"Añbð6ñIì�ð o D � á �@C$D éTþFósí ÿNï$"Añ©ìsùgH���Àë�ñFìfüsë� �bC D � { �bC D E á �@C D ] � ~c�búºë&(FùFû ð4ûýó�ù´ó�y � � { �bC D E o D F � ~¢�<"AñQósûe"@ë<ó�yëg � � � ~¢�P�Qí4ó��²ë[í6ð·�¿ó�yk{_�Qí4ë@ð4ïQí4ùQë^úbûýùªÏ2ð4ë�� ø Ï{û�ù�"@ë o D � á �bC D ósù ì�ðm%�ë^ì�ÿÔð �� � ø �Ió�ûýù2ðAÿ����Àë�ñFìfü�ë � ñIìsÿm}yó�í6ëTí6ó{óYðAÿ�ð4ñFìYùuûýð4ÿ'úºë^îsí4ë[ë���ìsùFú=ð6ñ{ïFÿ � �bC c� � é�có����Iü{ûýë�� ûýùQî�{¼ì�ÿcìS�²ó�%u�2ùFó�}¾û�ì�%oû�ù o � ûýð6ñª"@ó{ë�PS"[ûýë^ù2ð4ÿ�ySí4ó�}Ge � j C l �$�Àëuî�ë@ð ð6ñIì�ðM{ � á �@C ]7� � �IìYùFúªÿ6óo ÷ á �@C úQûýü{û úºë^ÿ�{ � o� éÆ�ù¹ósïQí<ð4í6ëÐì�ðF}¾ë^ù�ð�ó�yUð4ñQë{�Ôð4ó��Â�Qí6ó�ò�%�ë�}S�bìsòIó�ü�ë��oü�ë[í �Â%ýûýðNð %ýëS�wìsÿ�ÿF�²ë�"@ûJ($" ð6ó©ñFìfü{û�ùQî´ð6ñQë¿ÿ6ó�%�ïºð4ûýó�ù¥"[ó�}¾ëySí4ó�}�ó�ùQë ó�y ð·�Àó��Ió�%J�{ùQó�}¾û�ì�%�ÿ^é�êë�"@ó�ï�% ú ëÐìsÿ6ûJ%u�ÑñIìYùFú�%�ë � � �²ó�%u�{ùQó�}¾û ì�% ÿ¬û�ù ð4ñQë%ÿ4ì�}¾ë��wìT�séë�cóYð4ë ñQó��Àë[üsë^íð6ñIì�ð ð6ñFëuìYùFÿF�Uë^í4ÿ¢} ïFÿÔðR"[ó�}¾ë'ySí6ó�} ì��i:$65>a9ÑÿNë[ðwó�y,�²ó�%u�{ùQó�}¾û ì�% ÿ[é� ���R�����kIWiY�Ä�r�êëªùQó��¨}¾ó�ü�ëbð4óð6ñQëÄî�ë[ùQë^í4ì�%�"[ìsÿ6ë�� � û/é ëséu�ÀùFó{%ýó�ùQîsë^í¿ÿÔð4ûu"Hx{û�ùQîk� û ð4ñ�ð6ñQë©ð4ó��Ó�Qí4ósò�%�ë�} éÖÏ{ïQí �Qí6û ÿ6ûýùQî�%J�ë[ùFósïQî�ñ����Uë'�Àósù�Å ð�"AñFìsùQîsë$ð6ñQëuì�%ýî�ósí4û ð4ñ�}­�ºìYùFú´ë[ü�ë[ùbð6ñQëuìsùFì�%u�ºÿNû ÿ¢� ûJ%u%�"AñFìsùQîsë=ó�ù�%J�O}yûu% ú�%J��U´�/�- 0�±@²�° -H¶ + ¦ - ¶ +r. - 0n³� ±��n+�À Ï{ë@ðcó�y � úºû�ÿNð6û�ù�"@ðR�FìYû�í4ÿwA �bC D E o D f gch¥j �Yl G �QìYùFú´û�ù2ð6ë[î�ë[íAÿ � ìsùFú éÜ ¿�.T¿�/Ó+r°�+r.�²�³ Î<ìsùFú�� ð4ó�òIëuÿ6ë@ð�% ì�ð6ë^í^é/ °�+rÁõ0$³ þ'ûýùIú´ìyòQû�ü�ìYí4û�ìYð6ë'�²ó�%u�2ùFó�}¾û�ì�%�{ �bCmE o� ó�y�úºë[î�í6ë^ëwÎ$û�ù o ìYùFú©úºë^îsí4ë[ë���û�ù C ÿNï$"Añ>ð4ñFì�ð��

S { �@C D E o D Í� � YngAéS {G�� � é

/ °�+rÁ 2�³ þFì�"8ð4ósí�{ �bCmE o� ìYùIúbó�ïºðF�Fïºð ð6ñQë�%�û ÿÔðcó�ym�²ó�%u�2ùFó�}¾û�ì�%�ÿëá©ó�y�úºë^îsí4ë[ë=ì�ðR}¾ó�ÿNð �Qí6ó�ü{û úºë^ú��S o ÷ á �@C f�{ �bCmE o� �FìsùFúS á �@C$D Í�po D ySósícì�ðR%�ë^ì�ÿÔð � ü�ì�%�ïQë^ÿwó�ymgÍh{j �Yl éÆ]ð�û�ÿ<ë^ü2û úºë^ù�ð=ð4ñFì�ð<ð6ñQû ÿ�ÿNð6ûu%J%Ä�Àósí xºÿ%ë�PS"[ûýë^ù2ðF%u��z Ï2ð6ë�� ø û�ÿ=ÿNð6ûu%J%�ÿ6ó�%�ü{ûýùFî´ì%ýû�ùQëÐìYí�ÿ]�ºÿNð6ë�} ìYùFú¥Ï2ð6ë�� � û�ÿy�ì�"@ð6ó�í6û�ùQî�ì'}Ñï�%ýð6û�ü�ìYí4û�ìYð6ë��²ó�%u�{ùQó�}¾û ì�%/élê°ñFìYði�Uë ùFë[ë^úyð4óuìYí4îsïQëwû ÿ�ð6ñFë�"@ó�í6í4ë�"@ð6ùQëÐÿ6ÿ^émzwñQë�}�ìsûýùS"@ó�ù�"@ë^í6ù¾û�ùð6ñFë'"[ósí4í6ë�"8ðwû�ÿUð4ñFì�ð��Àë<ñIìfüsë%ùFóyí4ë^ì�ÿNó�ù�ð6ó¾ò²ë�%�ûýë^üsë=ì¾ÿNó�%ýïºð4ûýó�ùbÿ6ñQósï�%�úbë&�ºû ÿÔð¢ySósí�Ï2ð4ë�� ø éëÆ]ðwð6ïQí4ùFÿwó�ïºðwð6ñFìYðð6ñFû�ÿ<û ÿ¡"[ó�}_��%�ë@ð6ë�%J�´ð4í6û�ü{û�ì�%.z û�ù,ì�ð4ë�"AñQùFûu"^ì�%�ÿNë^ùFÿNëOU$êëZ� ûJ%u%¬ÿNñQó��Ýð4ñFì�ð=í6ëÐì�%u%J�´ùQûe"@ëZ�Ió�%J�{ùQó�}¾û�ì�%�ÿ�(QðNð4ûýùFîð6ñFë#"@ósùIúºû ð4ûýó�ùbó�yÄÏ{ð6ë�� ø ë&�ºû ÿÔðR� ûýð6ñFósïºð%ìsùr�"@ósùIúºû ð4ûýó�ùFÿwósùbð6ñFë��Ió�ûýù2ð4ÿ � ósù�%u�>ó�ù>ð4ñQëuúºë^îsí4ë[ë=ó�y�{ éÜ .�-�Ác-$²�±b°�±@-nÀ 0�2�3�0g�ôü 658T9�:ÂN�:�W#?&9�>.� � A �@C D E o D f gÍh{j �Yl G�Ú =·\ � ;�N�65MH?�\HMF=�QBe � ¬ e � >5L�9&M 9R6e?¡NÇ:n=�:}�X��9&M =;�=�VXW�:Y=�QZ6@N�V�{ Û 65>5L>úºë[î�� � { � õ å N�:n^Ñúºë[îg� � { � Î Ú ?�p}_ LÂ>5L�N�>�{ �bC D E o D i� � \&=�MB9&8�9�MUW�gÍhkj �Yl·tÜ .�-�-n¯ �cósð6ë=ð6ñIì�ðcð4ñQë#%�ûýùQëÐìYí%ÿF�ºÿÔð4ë�} ð6ó�ò²ëÑÿNó�%ýü�ë^ú��Qð6ó_(FùFú�{¼û ÿcìOL�=�QS=F`r9&:Y=�p�?�%�ûýùQëÐìYí%ÿF�ºÿÔð4ë�} � � ñQûe"Añû ÿ#� ñ��¼�Àë¿î�ó©ð6óªð4ñQë¿ð4í6ó�ïQò�%�ë¿ó�ycìfüsó�û�úQûýùQî´ð4ñQëbì�%J%c�[ë[í4óÄÿ6ó�%�ïºð6û�ósù �¬ìYùFú¹ûýð ñFì�ÿ � Î � ø �y� �,� Î�� � ø s �"@ó{ë�PS"[ûýë^ù2ð4ÿ��QìYùFúbósù�%u� � "@ósùIÿÔð4í4ìsûýù2ð4ÿ^éiÏ{óyð6ñQë�ÿF�ºÿÔð4ë�} û ÿ_�NïFùFúºë[íAúºë[ð6ë[í }¾ûýùFë^ú��yìYùFú>ð6ñ{ïFÿcñFìsÿwìyùQósù�|?ð4í6û�ü{û�ì�%ÿ6ó�%�ïºð6û�ósùoé

ø � | øsø !

Page 115: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ó%ÿ�ì$ÿ]�²ë�"[û�ì�%r"^ìsÿ6ë��T�Uë¢"@ó�ï�%�úÑìsÿFx¡ySó�í��²ó�%u�{ùQó�}¾û ì�% ÿ�ó�yFúºë[î�í6ë^ë � � ûýù C ìsùFú o �YìYùIú#Ñ�í4ó��²ó�ÿ6û ð4ûýó�ù ø � é ø � ìsÿ4ÿNë^íNðAÿð6ñIì�ðuÿNï$"Añ,ì�Ió�%J�{ùQó�}yû ì�%,(Qð6ð6û�ùQî � �²ósû�ù2ð4ÿ=ì�%u�ÀìT�ºÿ$ë&�ºû ÿÔðAÿ[éÇ�%óYð4ûu"[ë ð4ñFì�ð��Àëyìsí6ë î�ìsûýùQû�ùQî´ï��²ósùïQùQû�üfìsí6û ì�ð4ë(QðAÿ��ºò��¿ìZ� ñQó�%�ë � � y�ì�"@ð6ósíwìYùIú¿ð4ñQû�ÿwû ÿ¢� ñQë[í4ë$ð6ñQë�"@í4ï�"[û�ì�% ì�úºü�ìYù2ð4ìsîsëw"@ó�}¾ëÐÿÍySí4ó�}©é � y,"[ósïQíAÿ6ë��2ð6ñQë'�Qí4ó{ó�y}�ì�x�ë^ÿ ûýð%ð4óYð4ì�%J%u�­"&%�ë^ìYícð6ñFìYð%ð6ñFû�ÿ�{w|a�Ió�%J�{ùQó�}yû ì�%�û�ÿ%üsë[í �>ïFù�%ýûuxsë�%J�bð6ó>òIë ïQùQûe��ïFë�%u�©ÿF�²ë�"@ûJ(FëÐúªì�ðcð4ñQû�ÿ<ÿNð4ìYî�ëz òQïQð ð6ñQû ÿ û ÿwïFÿNïIì�%u%J��ðAì�"Hx�%�ë^úbòr�´ì�%�îsë^òQí4ìsûu"�}¾ë^ìYùIÿ[éêë#� ûJ%u%��Qí4ó�üsë�ì�ÿNð6í4ósùQî�ë[íwüsë^í4ÿ6û�ósù´ó�yÍìc%�ìsûJ} ø � é £ òIë�%ýó�� � ì�"8ð4ïFì�%u%J���IÿNð4ìYð6ëuì�ÿNð6í4ósùQî�ë[íwüsë^í4ÿ6ûýó�ù´ìsùFú<%ýë[ðcð6ñFëí4ë^ìsúQë[í7�Qí4ó�üsë<û ð%ì�ÿ ìYù´ë&�ºë[íH"@û ÿNë é® +�/Ó/Ì¿{0�2�3@0n0 Õ \Z{ô6e?#N�:$WZ?&=�V@p�>d6@=�:Â>æ=�r$>æ9a;�sSN�:n^7á{6e?#N�:$W_^�9a`�MF9H9 ;�=�VºW�:n=�QZ6@N�Vm>5L�N�>cN�`�M 9 9&? Û 65>5L<>bL�9`�658T9�:S;�=�65:$>Í?�9�>7=�: �¢s � � ΢à ;�=�65:�>�? Ú >bL�9�: o ÷ á �bC f { �@C�E o� tzwñQë_�Qí4ó{ó�yTû ÿ$ð6óYðAì�%u%J�ªû úºë^ù�ð4ûu"^ì�%�ð4ó>ð4ñFì�ð�ó�yRìc%�ìsûJ} ø � é £ �Y� ûýð6ñ,ð6ñQë_}¾ûýùFósí�"AñFìYùFîsë ð6ñFìYð<ð4ñQë�úºë[î�í6ë^ëÑó�yTð6ñFë� �²ó�%u�{ùQó�}¾û ì�% � ìYùFú©ñFë[ù�"[ë�ð6ñQë ìYîsí4ë[ë�}¾ë[ù2ð í6ë���ïFûýí4ë^ú îsó�ï��©ð4ó��_ÎYé�zwñQëuí4ë^ìsúQë[ícÿ6ñQósï�% ú©üsë^í6ûJyb�¿ð4ñQëÇ"�%�ìsûJ}ð6ñFósïQî�ñ.UÑ�ïQðNð6û�ùQîPÑTí6ó��Ió2ÿNûýð6û�ósù ø � é ø � ìYùFú­Ý�ë�}_}�ì ø � é øsø ð6ó�îsë@ð4ñQë[í����Àë<î�ë@ðwð6ñFë'ySó�%u%ýó�� û�ùQîyð6ñQë^ósí4ë�}©é)#*,+�-�.�+�/10�2�3�0�2�� L�9kN�V `r=�MU65>bL�Q ´�/�- 0@±�²�° - ¶ + ¦ - ¶ +�. - 0 Û 65>5L >5L�9Â?�9�>�>d65:r`a� � � �� N�:n^ÂÎ �¡  �,�� ?�=�VX8�9&?#>5L�9�´�/ 0�±@²�° ¶ + ¦ - ¶ ±@À¢+¼Ám.�- ð 0�+r/ 65:P;�=�VXW�:n=�QB6@N�Vm>d65Q_9�;nM =�8�6@^�9H^ �cs � � ��ÍtÜ .�-�-n¯ ~¢�PÑ�í4ó��²ó�ÿ6ûýð6û�ósù ø � é ø � �{ìÑùFósù�|a�[ë^í6ó#�²ó�%u�{ùQó�}¾û ì�%.{ �@C�E o� � û ð4ñ´úQë[îg� � { � � ìsùFú>úQë[îg� � { � �úºó{ë^ÿ%ë&�ºû ÿÔðÐé7~¢�­Ýoë�}Z}�ì ø � é øsø �FÿNï$"Añ©ìP�Ió�%J�{ùQó�}yû ì�%m� ûJ%u%�ñIìfüsë o ÷ á �bC ìsÿ$ìZy�ì�"@ð6ósí��FûJy�áÄû ÿ%ìsùr�´úºë[î�í6ë^ë �²ó�%u�2ùFó�}¾û�ì�% ð6ñFìYðcñFìsÿ ìsîsí4ë[ë�}yë^ù2ðZ� � ΢à � � � �� ézwñQû ÿ¾òIó�ïQùFú`û�ÿ¾ùFóYð�ó��ºð4ûJ}�ì�%?ép�cósð6ûe"@ë´ð6ñFìYð�ð6ñQëp� �só�ñQùFÿ6ósù�ò²ósïQùIú��¼ySí6ó�} zwñQë[ó�í6ë�} ø � é*)Äósù�%u��í4ë��2ïQû�í6ëÐÿ�¢s � �� ìYùFú´ÿNó_�Àë�ìYí4ë$ó�¹ò��>ìBy�ì�"8ð4ósíwó�y � é�êë#"[ìsù´ì�"8ð6ïIì�%u%J��î�ë@ðcí4û�úbó�y'ósùQë � � y�ì�"8ð4ósí û�ù � ò��>ì_"&%�ó�ÿ6ëë&�Qì�}yû�ùFìYð6û�ósùªó�y�ð4ñQëÇ�Qí4ó{ó�y·�²ìYùFúÄúQë&(FùQû�ùQî>ìsùFúÂ"@ó�ù2ð6í4ó�%u%ýû�ùQî¾ð6ñFë úºë^îsí4ë[ëuó�y;{ }¾ó�í6ëÇ"^ìYí4ë&ySï�%u%u�sé êëÇ� ûu%J%'ÿNë^ëð6ñFû�ÿ$ì�ð ð6ñFë�òIë^îsû�ùQùQû�ùQî�ó�y�ð6ñFë�ùQë&�{ð�%�ë�"@ð6ïQí4ëséÍzwñFëuÿNë�"@ósùIú � � y�ì�"8ð6ó�í û�ÿR}yó�í6ë�ûu}_�Ió�íNðAìYù2ð^éTê,ë#� ûu%u%oîsë[ðcí6û úó�y'ð6ñFû�ÿwû�ùªìB} ï�"Añ­}¾ósí4ë<û�ù{üsó�%ýü�ë^ú>ì�%ýî�ósí4û ð4ñ�} % ì�ð6ë^í ùQë&�{ðR%�ë�"@ð6ïQí4ësé£ V¤�¥� ���"!�¦¨§�©���«ª¬�­�k���zwñQë¡(FíAÿÔð7�Qí4ó2ó�y�ó�y�ð6ñQë���ósñQùFÿ6ósù>òIó�ïQùFú � û�ù�"&%�ïFÿ6ûýó�ù�|/ë���"&%�ïFÿNû�ósù û ÿwì��]ySó�%uxr%�ósí4ë��uí6ëÐÿNï�%ýðwûýùbð6ñQë#ì7ÏO%ýûýð6ë^í4ìYð6ïQí4ë� "&yÔé�j T ø ��! � l ë@ðH"Yé éizwñQëuÿ6ë�"[ósùFú�Qí4ó{ó�yló�ylð4ñQë#��ósñQùFÿ6ósùbòIó�ïQùFú´û ÿcúºïQë<ð6óP�2ìYûux{ï�}�ìYí L ì�úºñFì�x{í4û�ÿ6ñQùFìsù¼j £�� l ézwñQë ì�%�îsó�í6ûýð6ñ�} ySó�íë%ýû ÿÔðF|]úQë�"@óºúºû�ùQî<ó�y L ë[ë^ú�|æÏ{ó�%ýó�}¾ósùB"[óºúºë^ÿ'û ÿ�ySí4ó�} ϺïFúQìYù­j ø ��£ l ék®ªó�ÿNð'ó�yFð4ñQë7xsë���û�ùFÿ6ûýî�ñ2ð4ÿ��ìYùIú>û�ù�IìYí6ð6ûe"@ï�% ìYíUð6ñQëuÿ6ó�%�ïºð4ûýó�ù¿ð6óyð4ñQë­�Ôð6ó��S�Fí6ó�ò�%ýë�}S���{û�ÿ¢ySí4ó�}�ð4ñQë��Àósí xyó�y,ó%í���Ý�ûJ�ºð4ósù�� L ïQòQû�ù�ySë�% ú��FìsùFúÏ{ïFúFìYù{j ( l éizwñQë�}�ìsûýù´ósòFÿ6ë[í4ü�ì�ð4ûýó�ùbû�ù{j ø ��£ l û ÿÀð6ñQëÂ�Nð6í4ûýü{û ì�%�û ð·�O�Qí6ó��Ió2ÿNûýð6û�ósù$����Ñ�í4ó��²ó�ÿ6û ð4ûýó�ù ø � é ø � é

ø � | øsø (

Page 116: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

¯ °²±´³«µ�¶¸· ¹»º

Ô�3nm|uYû Ë 0^+n-$.T±@°�*,/Ó± ¦v¼ ÀY°�.�- ¶¢½,¦ °�±�-$Àp°�- l - ¶ ±�À,+k)#*,+�-�.Tà � "@ð6ósò²ë[í T ø � � ��� ø¾�¿,À�Á1Â�Ã9¿�Ä,ÅÆ�9b_�>Xp�M 9&M�Ç�ȪN�^�LQp�r|p�^�N�: r�_�MU6@×H9VÇ�ÉB=�9�>a9b_bÊ�ËÂ9H9

zló{ú}ÌT�nÅ ÿUð6ó��Qûu"^ÿ��S L�Í ü{û Í �"ó�ykÎ�ûJ}_�9Ï4ó�ü Í } Í ù�ÐÑÐ4óS%ýû ÿÒÐ]|�ú Í "[ó{úQûýù9ÓZy�Ï4ó�}ç%nÌsÿÒÐ�% Í "�Ð�Ô9Ï Í éS ®ªó�źò Í ÐÕÐ Í Ï�%ýû ÿÖÐF|]ú Í "@óºúºû�ù9ÓIéS z�ó��ZÌ ÏAúQÿÑÓ Í ù Í ÏbÌ�%�ûJ�yÌ�Ð6û�ósùbó�y�ú Í "[ó{úQûýù9Ó�Ì�%×Ó�ó�Ï4ûqÐ�Ø�}�ÿ[é

�M����� #$��Ùv���Ú ���Û���.��Ü|ÝÞ������������ß Í � ûJ%u%IÿÒÐ�Ì�ÏÒÐ;à���Ï Í ü2û Í � û�ù9Ó�Ð�Ø Í %�û�ÿÒÐ]|�ú Í "�áºúºûýù}Ó¨Ì�%6Ó�á�Ï4û×ÐÕØ�} y�á�Ï L�ÍVÍ ú�|·Ïgá�%×á�}4á�ùZ"�áºú Í ÿiy�ÏÕá�}»ÐÕØ Í %6Ì�ÿÖÐi% Í " ÐÕÔ9Ï Í �y�Ï�á�}âÌyü Í ÏF�WØQû6Ó�Ø�|a% Í ü Í % � á�ÏZØ}ÌsùFú�|a�ãÌfü�����ûJym�Oá�ÔO�}Ï Í y Í Ï � Í ÏAÿF� Í "�Ð6û�ü Í éÄzZØ Í Ó�áOÌ�%Iû ÿãÐÕá¾ÿÒÐÕÏ Í ÿ4ÿ?Ð�Ø Í ÿNûu}_��%�ûu"[ûqз�á�y,ÐÕØ Í Ì�%×ÓOá�Ï4ûqÐ�Ø�}©é,zZØ Í ù� Í � ûJ%u%oúQá�ÌB"VÌ Ï Í y�Ô�%�Ìsù}Ì�%u�ºÿNû ÿ?á�y�Ð�Ø Í Ì�%6Ó�á�Ï4û×ÐÕØ�}~Ð�áyÿ Í�Í Ø9á��äÐ�á�Ó Í Ð�Ï4û�ú�á�y,á�ù Í á�yÐÕØ Í Ð·�Ñá � � y^Ì�"�Ð�á�ÏAÿãÐÕØ}Ì Ð%ÿ Í �}Ì ÏbÌ�Ð Í Ð�Ø Í Ì�%6Ó�áOÏ6û×ÐÕØ�} y�ÏÕá�}åÐÕØ Í "�á�}�àQûýù|Ì�ÐÕáOÏ6ûnÌ�%�à1á�ÔQùIúQÿ[é��C7�F�Ä�]� æ¼��� ��I]�i�i���·���JK �Í� �Ä� ��ç��kK´FMI·�z,á�Ï Í "�Ì�%u%kÐÕØ Í û�ú Í Ì�á�yZÐÕØ Í Ì�%6Ó�á�Ï4û×ÐÕØ�}­��û×Ðuû ÿ�ûJ%u%6ÔFÿÖÐ�Ï�Ì Ð6û�ü Í Ð�áª" á�èIÿNûné Í Ï¨Ì�è Í �9Ì�}_��% Í é�ß Í ��êu%J%c" á�èIÿÒêné Í Ï¨Ì�èÍ �9Ì�}Z��% Í " áOèFÿÒê ÿÒÐÕê6è9Ó"á�yÑë T �|áOê×è�ÐbìZê×è�ÐÕØ Í Ï Í Ì�% �^í Ô�"&%6êné Í Ì�è ��%6Ì�è Í_�bC$DFE o D E ë � g � ë T9î ß Í ��êu%J%1Ð�ÏF�WÐ�áB(|è}éÌ�%u%ké Í ÓOÏ ÍVÍ á�è Í �|á�%J�gè9á�}4ênÌ�%nì¡�}Ì�ì�ìÒê6è9Ó�Ð�Ø9Ï�á�Ô9ÓOØ�Ì�С% Í ÌOìÖС(}ï Í �|áOê×è�Ð�ì^é¡��á Ð Í Ð�Ø}Ì�ÐJÐÕØ Í è�Ô�}"à Í ÏbìJÌ�Ï Í "bØ}áOì Í èy�á�ÏJêJ%u%6Ô}ìÖÐ�Ï�Ì ÐÕê6á�è�áOè�%J��é¡ì Í ÏÕÐ�Ì�ê×è�%u�vÐÕØ Í Ì�à9êu%×ê×з��ÐÕáS(}è|é�é Í ÓOÏ ÍVÍ á�è Í �|á�%J�gè9á�}4ênÌ�%nì�ìÕØ9áOÔ�%6é�è}á Ð�à Í "�á�è}ìÕê6é Í Ï Í éÐÕØ Í Ø9ê×ÓOØ�|a�|áOê×è�Ð�á�y¢ÐÕØ Í Ì�%×ÓOá�Ï�êqÐ�Ø�} î ìÒê6è�" Í �Õà9Ï�ÔQÐ Í |�y�áOÏ " Í �"Ì�%×ÓOá�Ï�êqÐ�Ø�}�ì7" á�Ô�%6é�éQá4ÐÕØ}ê6ì�ê6èÂ��Ô}Ì�éQÏbÌ�Ð�êu"�ÐÕêu} Í é

ë T |bë�ëyd

Page 117: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ð

ðð ððð

ð ð

ðð

ððð

zZØ Í }�Ì ê6è�è9á Ð�ê×áOè�Ð�Ø}Ì�Ð�éQênìÒÐÕê6è9Ó�Ô9ênìÕØ Í ìãÐ�Ø9ê6ì�Ì����9Ï�áOÌ�"bØPy�Ï�á�}åÐ�Ø Í ÐÕÏbÌ�é9êqÐ�ê×áOè}Ì�%�" áQéQê6è9Ó�|XÐ�Ø Í áOÏ Í ÐÕêe"MÌ����9Ï�áOÌ�"bØ�ê6ìÐÕØ|Ì�ÐÑê6è}ìÒÐ Í Ì�é�á�yY�}Ô�%J%6ê6è9Ó"áOÔQÐÑáOÔ9Ïc"VÌ�%e" Ô�%nÌ�Ð�á�Ïbì;Ì è}é�ê×è�Ð Í ÏF�1á�%nÌ�Ð�ê×è}Ó î � Í Ì�Ï Í ìÕê×ÐÒÐÕê6è9Ó�à}Ì�"HxWÌ è}éO" á�è�Ð Í }_��%nÌ�ÐÕê6è9ÓIéß Í Ð�ÏF��Ð�áO(|è}éaÌvè9êe" Í Ì�%6Ó Í à9Ï�Ì�êu"Ç" Ô9Ï�ï Í ÐÕØ}Ì Ð'"VÌ è Í ����%nÌ ê6èaÌ�%u%¢ÐÕØ Í ë T �1á�ê6è�Ð�ì^é � è Í ìÒÔ�"bØ¥" Ô9Ï�ï Í ê6ì�éQÏbÌT��èà Í %6á���éð

ðð ððð

ð ð

ðð

ðððÞññññññ

ò ò ò ò ò ò

zZØ Í "�Ô9ÏÕï Í ÐÕÔ9Ï�è�á�ÔQÐ�Ð�á�à Í {�ó CmE o9ô?õ C}ö�÷ o ö�÷¥C|ø � o ø õ � ó^ÌOìÕìÕÔ�}Wê6è9Ó4ÐÕØ Í " Í è�ÐÕÏbÌ�%��1á�ê6è�Ð�ê6ì�ÐÕØ Í áOÏÕê6Ó�ê6èÌ è|é4ÐÕØ}Ì Ð?ÐÕØ Í �1á�ê6èOÐbìÑÌ�Ï Í ì "�Ì�% Í é�Ì����}ÏÕá��9ÏÕênÌ�Ð Í %u� ô émzZØ Í �9êe"�Ð�Ô9Ï Í Ì à1á�ï Í ênì�Ð�Ø Í ��%6á Ðãá�y.Ì�%u%1êqÐbìi� Í ÏÕá Í ì[éiìc% Í Ì Ï %J�ÐÕØ Í Ï Í Ì Ï Í Ð�Ø9Ï ÍVÍ éQênìÖÐ�ê×è$"�Ð�" á�}_�1á�è Í è�Ð�ì�Ð�á¨Ð�Ø Í ì Í Ðãá�y�Ì�%u%n� Í Ï�á Í ì^é,zZØ Í ì Í " áOÏÕÏ Í ìF�|áOè}é4ÐÕá¨ÐÕØ Í y^Ì�" ÐÕá�Ï�êu�VÌ�Ð�ê×áOèWá�y{���Ø9áOì Í y^Ì�" ÐÕáOÏ�ì�Ì�Ï Í�C�÷ o î C � o Ì è}é C ø � o ø ÷ ë�é?ßäØ9êu% Í ÐÕØ Í Ì�%×Ó Í à9ÏbÌ êe"Já�� Í ÏbÌ�ÐÕê6á�è�á�ymy^Ì�"�ÐÕáOÏÕêu�VÌ ÐÕê6á�è�ê6ìè ÍVÍ é Í é4ÐÕá­Ð Í %u%9ÐÕØ Í " á�}Z�1á�è Í è�Ð�ì î Ð�Ø Í ØgÔ�}�Ì è Í � Í éQá Í ìÕè�Å Ð?è ÍVÍ é4ÐÕØ}ê6ìc"�Ì�%e" Ô�%6Ì ÐÕê6á�è Í ê×ÐÕØ Í Ïi|,ìÕê6è�" Í Ð�Ø Í �9êe"�Ð�Ô9Ï Í"&% Í Ì�ÏF%u��éQênìÖÐ�ê×è}Ó�Ô9ênìÒØ Í ìJÐÕØ Í Ð�Ø9Ï Í�Í y^Ì�"�Ð�á�Ïbì[éBÆùè�y^Ì�"�Ш̭"&%6áOì Í %6ágá�x�Ì Ð Í �Qê6ìÒÐÕê6è9Ó<y^Ì�" ÐÕá�Ï�êu�VÌ�Ð�ê×áOèúÌ�%6Ó�áOÏÕê×ÐÕØ�}Wì¡y�áOÏ}"Ô�%qÐ�ê×ï�Ì Ï�ênÌ�Ð Í �1á�%u�gè9á�}WênÌ�%nìJÏ Í ï Í Ì�%6ì�ÐÕØ}Ì Ð­ÐÕØ Í �úÌ Ï Í à}Ì�ì Í éaá�èaÐÕØ Í Ó Í á�} Í ÐÕÏ�êu"�ê6èOÐ�Ô9ê×ÐÕê6á�èaÐÕØ}Ì Ð¨ê6ì Í ï�êné Í èOЭê6èÐÕØ Í �}êu" ÐÕÔ9Ï Í Ì à1á�ï Í zûÐ�Ø Í �Py^Ì�"�Ð�á�Ïbì7"�Ì è�à Í é Í Ï�ê×ï Í é�à��_(9ÐÕÐÕê6è9ÓS�1á�%u��è}á�}Wê6Ì�%6ìÑÐ�áB�Vá�} Í � Í Ï�á"á�yk{�ó C�E oQô Ì�è}éê×Ð�ì�%6á�"�Ì�%�è|Ì ê6Ó�Øgà|áOÏÕØ}á�áQé�é��C7�F�Ä��� ü ���]�Í�c����ýþý����i�����Ö�Ä�Jý ���ÑK��ÿK �]���i� �ÕK F¡��� � ��K ���c���z,á�Ó Í Ð�ÐÕØ Í à Í ìÒÐw�1áOì�ìÒê6à�% Í � Í ÏFy�á�Ï }WÌ�è�" Í á�ÔQÐMá�y�ÐÕØ Í Ì�%6Ó�áOÏÕê×ÐÕØ�}�Ì�à|á�ï Í î � Í è ÍVÍ é�Ð�á�à Í }Wá�Ï Í "VÌ Ï Í y�Ô�%,��êqÐ�ØÐÕØ Í é Í Ó�Ï Í�Í á�y�ÐÕØ Í �|á�%J�gè9á�}4ênÌ�%k{´ÐÕØ|Ì�С� Í �9êe"Hx é��9áOÏ Í �9Ì�}_��% Í î ��Ø Í èª� Í Ì�Ï Í Ð�ÏF�gê6è9Ó�Ð�áP(}è}éúÌP%6ê6ìÒÐJá�y�Ì�%J%é Í Ó�Ï Í�Í ë'�|á�%J�gè9á�}4ênÌ�%nì î á î ê×Ð�ê6ì�à Í ÐÒÐ Í Ï�ÐÕáS�}êu"Hxv{ á�y,Ð�Ø Í ì]}�Ì�%J% Í ìÒÐ��|á�ìÕìÕê×à�% Í Ð�á Ð�Ì�%.é Í ÓOÏ ÍVÍ î ÏbÌ�Ð�Ø Í ÏZÐ�Ø}Ì è�ÐÕØ ÍìF}WÌ�%J% Í ìÒÐ�ê×è|éQê×ïgênéQÔ}Ì�%.é Í ÓOÏ ÍVÍ ìãê×è C Ì�è}é o éÄ~ZÌ�ì Í évá�èvÐÕØ9ênìZêné Í Ì î Ì è}é<x ÍVÍ �9ê6è9Ó4ê×è­}Wê6è}é�Ð�Ø}Ì�Ð�Ì Ð�ìÒá�} Í �1á�ê6è�Ð� Í�Í è|é\Ô���ìÕÔ9à}ìÒÐÕê×ÐÕÔQÐ�ê×è}Ó�y�áOÏ o Ìúé Í Ó�Ï Í�Í�� �|á�%J�gè9á�}4ênÌ�%má�ê6è C ó^Ì è|é�ÐÕØ}Ì ÐZ� Í Ø}Ì ï Í è9áaê6é Í Ìª��Ø}Ì Ð"Ð�Ø9ê6ì�1á�%u��è}á�}Wê6Ì�%�á�ê6ì�ÓOá�ê6è9Ó�Ð�á�à Í ô î êqШênì�à Í ìÖЭÐ�á<(9Ð"Ì<�|á�%J�gè9á�}4ênÌ�%;{âÐÕØ}Ì Ð#}Wê×è9êu}WêJ� Í ì¨Ì �]� Í ê6Ó�Ø�Ð Í é���é Í ÓOÏ ÍVÍy�Ô9è�" ÐÕê6á�èoé�ß Í é Í (}è Í ÐÕØ}ê6ì�� Í ê6Ó�Ø�Ð Í é�é Í ÓOÏ ÍVÍ è Í �gÐ��¾ +��ëÀ,±b°�±�-$ÀÖ0��3�0å� L�9 ó ��K�E� ø ô |d� Í ê6Ó�Ø�Ð Í é\é Í ÓOÏ ÍVÍ =]\<N¥QS=�:Y=�QZ6@N�V C D o ½ 6e?<>5L�9�� p�N�:�>d65>�WgÍà ��K � ¸Sà � ø t� L�9�ó �rK�E� ø ô |d� Í ê6Ó�Ø�Ð Í éWé Í ÓOÏ ÍVÍ =]\¡N�;�=�VXW�:n=�QB6@N�V}{�ó CmE o9ô 6e?R>bL�9¡QSN�t�65Q4p�Q Ú =�8�9&M'N�V5VnQ_=�:n=�QZ6@N�VX?¡65:�{ Û 65>5L:n=�:}�X��9�MF=�_H=�9^]`_&6@9�:�>�? Ú =·\�>bL�9�65M¨ó � K E� ø ô � Û 9�6º`TL�>æ9 ^<^�9a`�MF9H9 t

ë T |bë�ë�)

Page 118: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ß Í è9á�� �9Ï Í ì Í è�ÐZÐÕØ Í y�Ô�%J%u��á��QÐÕêu}WêJ� Í é�Ì�%6Ó�áOÏÕê×ÐÕØ�} y�á�Ï L�ÍVÍ é�|·Ïgá�%6á�}WáOè�é Í " áQéQê6è9Ó��´�/�- 0�±@²�° -H¶ + ¦ - ¶ +r. - 2�³� ±��n+�À Ï Í Ð�á�y� �éQê6ìÒÐÕê6è�" ÐR�}Ì ê6Ï�ìwAgó CnD·E o D ô f gch¥j l G î Ì è}é�ê6è�Ð Í Ó Í Ïbì��ãÌ�è}é � éÜ ¿�.T¿�/Ó+r°�+r.�³ �þÐÕá�à Í ì Í Ð�%6Ì Ð Í Ï^é/ °�+rÁõ0$³ �¢ê×è|é�Ì4à9ê6ï�Ì Ï�ê6Ì Ð Í �1á�%u��è}á�}Wê6Ì�%�{�ó CmE o9ô á�yZóÖë E� ô |d� Í ê6Ó�Ø�Ð Í évé Í Ó�Ï Í�Í � ìÒÔ$"bØ�Ð�Ø}Ì�Ð��

S {�ó C D E o D ô?õ�� YngAéS {G�� � é/ °�+rÁ 2�³ �}Ì�"�Ð�á�Ï�{�ó CmE o9ô Ì è|éváOÔQÐF�}ÔQÐ�ÐÕØ Í %6ênìÖÐ�á�ym�1á�%u��è}á�}Wê6Ì�%6ìëá�á�yké Í Ó�Ï Í�Í Ì�ÐR}WáOìÒÐ � �9ÏÕá�ïgêné Í é��S o ÷ á,ó C ô f�{�ó CmE o9ô î Ì�è}éS á,ó C$D ô?õpo D y�á�Ï�Ì�ÐR% Í ÌOìÖÐ��ãï�Ì�%6Ô Í ìZá�ymgÍh{j l é

zZØ Í ìÒÐ�Ì�è}é9Ì Ïbé<"&%nÌ êu}Wì�ÌOé9Ì��9Ð Í éy�áOÏZÐÕØ Í "VÌ�ì Í á�ym� Í ê6Ó�Ø�Ð Í é�é Í ÓOÏ ÍVÍ ìZÌ Ï Í Ó�ê6ï Í èvà Í %6á���é;ß Í ì]xgêu�vÐ�Ø Í �9Ï�ágá�y^ì îà9ÔQÐ�Ð�Ø Í ��Ì Ï Í á�àgïgê×áOÔ}ì[éÜ .�-�Ác-$²�±b°�±@-nÀ 0��352�� =�M#N�:�W_?�9&>¢� õ A�ó C$DFE o D ô f gÍhkj l G =·\� �;�=�65:�>�?'65:�e|� ¬ e|� Ú >bL�9�MF9Ç9�t�6e?U>@?�N_:n=�:}�X��9&M =;�=�VXW�:Y=�QZ6@N�V�{ =·\¨óÒë E� ô � Û 9�6º`�L�>a9H^<^�9a`�M 9 9ZN�>cQ_=�?U> � � � ?�p}_HL­>bL�N�>k{�ó C$DFE o D ô;õ�� \&=�MBN�V5V�gÍh{j læt® +�/Ó/Ì¿{0���3��ÖÕ \'N�;�=�VXW�:Y=�QZ6@N�V|{�ó C�E oQô =]\JóÒë E�� ô � Û 9�6º`�L�>a9H^P^�9a`�MF9H9�� N�:Y^Z>5L�9c;�=�VXW�:Y=�QZ6@N�V o ÷ á¢ó C ôHÚÄÛ 65>5Lá¥L�N�8�65:r`Â^�9a`�MF9H9BN�>ÍQS=T?U> � Ú L�N�8T9BQS=�MF9Ç>5L�N�:�� _H=�QZQ_=�:���9&MF=�9&? Ú >5L�9&: o ÷ á,ó C ô ^�658�6@^�9U?M{�ó C�E o9ô tÑ;Ô9ÐÒÐÕê6è9ÓWÐ�Ø Í Ð·�Ñá�ÐÕáOÓ Í ÐÕØ Í Ï î � Í Ó Í Ð��)#*,+�-�.�+�/10��3���� �e0Q�|u"!$#B� L�9ON�V `r=�MU65>bL�Q ´�/�- 0@±�²�° - ¶ + ¦ - ¶ +r. - 2 Û 65>bL¥>bL�9Z?�9�>�>d65:r`�� õ � � � ?�=�Vº8T9&?Z>bL�9´�/ 0�±@²�° ¶ + ¦ - ¶ ±@À¢+¥Ám.�- ð 0�+r/ 65:_;�=�VºW�:n=�QZ6@N�V,>d65Q_9�;nMF=�8�6@^�9H^%� s � � � tß Í è9á�� }Wá�ï Í ÐÕá��ZÌ Ïbé9ìMÌvà Í ÐÕÐ Í Ï"Ì�%6Ó�áOÏÕê×ÐÕØ�} y�áOÏ'%×ênìÖÐF| é Í " áQéQê6è9ÓIéZ~ãÔQÐ'(}ÏbìÖÐ�� Í ÐÕÏ ��ÐÕá­}Wá Ð�ê×ï�Ì�Ð Í êqÐÐé4ßäØ��ìÕØ9á�Ô�%né � Í Ð�ÏF� ÐÕá êu}Z�}ÏÕá�ï Í ÐÕØ9ênì�Ì�%6Ó�áOÏÕê×ÐÕØ�}�N � è Í á�y¨ÐÕØ Í }�Ì ê6è }Wá Ð�ê×ï�Ì ÐÕê6á�è}ìvê6ì�ÐÕØ Í ÓOáOÌ�%�ÐÕáwÓ Í Ð�ÐÕØ Í" á�}"à9ê6è}Ì ÐÕá�Ï�ênÌ�%�Ï Í ìÕÔ�%×Ð�ìMÌ è}éaÌ�%6Ó�áOÏÕê×ÐÕØ�}Wêe"¨à1á�Ô9è|é9ìJÐÕá<}WÌ Ð "bØoé�zZØ Í Ì�%6Ó�áOÏÕê×ÐÕØ�} Ì�à|á�ï Í"Í è}é9ìMÔ��aìÕá�%6ïgê×è}Ó�ÐÕØ Í%6ê6ìÒÐ]|ùé Í "�áQéQê×è}ÓZ�}ÏÕáOà�% Í } Í �9Ì�"�ÐF%u�P��Ø Í è�ÐÕØ Í ê6è�"&%6Ô}ìÕê×áOè�| Í ��"&%6Ô}ìÕê×áOè�à1á�Ô9è}é<�ãá�Ï xQì[é¢ßäØ}Ì�ÐR� Í �ãÌ�è�ÐZè Í �gÐ�ê6ì�Ì�èÌ�%6Ó�áOÏÕê×ÐÕØ�}~ÐÕØ}Ì ÐR} ÍVÍ ÐbìZÐÕØ Í ÓOÏ�Ì��9Ø�|DÐÕØ Í á�Ï Í Ð�êu"Jà|áOÔ9è}é î ê?é Í é î ��Ø Í è&� s � � ¬é K é�M���b� ' � )(�§�!���Ù4��� ¥���.��Ü|������������! � �"!$#&%'���������~ Í y�áOÏ Í �}ÏÕá�" ÍVÍ éQê6è9ÓÓ% Í Ð�Ô}ìvà Í �ãÌ�ÏÕè Í é ÐÕØ}Ì Ð�Ð�Ø Í �ÕêJ}_�9Ï�á�ï Í } Í è�Р��ênì�áOè�%J� ê6èäÐÕØ Í ègÔ�}"à Í Ïvá�y Í ÏÕÏ�á�Ïbì�ê×Ð"�Ì�è{" á�Ï�Ï Í "�Ð *,Ì�è}é�è9á Шê6è�ÐÕØ Í Ï�Ô9è9è9ê6è9Ó�Ð�êJ} Í é � Ô9Ï­Ï�Ô9è9è9ê6è9Ó�ÐÕêu} Í ì���êu%u%?Ì�" ÐÕÔ}Ì�%J%u�úÓ Í Ð��ÑáOÏ�ì Í î à9ÔQÐ"Ï Í }�Ì ê6è�1á�%u��è}á�}Wê6Ì�%J%u��à1á�Ô9è|é Í é�é

+-,/.103254�6/087:9�; < =?>@6BA1C�,ED)A1C5F�A

ë T |bë�ëyc

Page 119: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

��C7�d�7�]� ü ���]�Í�c����ýHG���iY��ý��]���JI¼���;HMI·��Kß ÍLK ê�MNMMÌPO�Ð�Ô}ÌQM�Mu�SR}è|éÛÌ èäê6è}éQê6Ï Í O�Ð�Ï�á�Ô9Ð Í Ð�á á�Ô9ÏvêJ}_�9Ï�á�ï Í } Í è�Ð^é L Ì ÐÕØ Í Ï�ÐÕØ|Ì èÛìÕáPM6ï�ê6è9Ó�Ð�Ø Í ìÒÐ�Ì�è}é9Ì ÏbéM6ê6ìÒÐ]|ùé Í O�áQéQê×è}ÓZ�}ÏÕáOà"M Í } î KÑÍTK ê�MNM Í)U �"M×áOÏ Í Ì KãÍ ê6Ó�Ø�Ð Í éVM6ê6ìÒÐ]|ùé Í O áQéQê6è9Ó�ÌQM6Ó�á�Ï�ê×ÐÕØ�}©é

WYX ±^+[ZY° X�¶ ´�X�Xr¶Û/ -|0�-]\Ì-$À ® ±�²�° - ¾^Xr¦ - ¶ ±@À¢+ ÜT_ - ð 0 X \�³24365,798;: ¬éQênìÒÐÕê6è`O�Ð �1á�ê6è�Ð�ì ó CYK�E o K ô E ó C ø E o ø ô E)a)aba�E ó C]c:d o c ô K ê×ÐÕØeO�á�Ï�Ï Í ì]�1á�è}é9ê×è9Ó´ê6èOÐ Í Ó Í ÏKÑÍ ê×ÓOØOÐbìgf K d f ø d)a)abaBd f c ó^ìF� Í O êNR Í é�ê6è�Ô9è}Ì Ï � ô î é Í Ó�Ï Í�Í à1á�Ô9è}é � î Ì è}é�Ì è�Ì ÓOÏ ÍVÍ } Í è�Ð�à|áOÔ9è}éh ó K Ø}ê�ObØ�Ï Í �"MnÌPO Í ìÑÐÕØ Í �|Ì ÏbÌ�} Í Ð Í Ï��Ñê6è�ÐÕØ Í �}Ï Í ï�ê6á�Ô|ìc�}ÏÕáOà"M Í }GìÒÐ�Ì�Ð Í } Í è�Ð ô é2ji:kml �¢ê×è|é�ÌQM�M.é Í ÓOÏ ÍVÍT� �1áPMu��è}á�}Wê6ÌPM6ìëá�ìÕÔ`ObØvÐÕØ}Ì Ð ß�n/o f ý � ê ÿ I � ê f n s hz,á}Wá Ð�ê×ï�Ì Ð Í ÐÕØ9ênìw�9ÏÕáOà"M Í } î M Í ÐMÔ}ìMè9á�Ð Í ÐÕØ}Ì ÐJÐ�Ø9ênì�ê6ìJê×èaÐÕØ Í ìF�9ê6ÏÕê×ÐMá�y;ÐÕØ Í_¤ ®qp$ó^Ó Í è Í ÏbÌQM6êJ� Í é­}Wê6è9êJ}�Ô�}éQênìÖÐbÌ è`O Í ô é Í O áQéQê6è9Ó­�9ÏÕáOà"M Í }$á�y��9áOÏÕè Í �Ìj (�( l éZzZØ Í }�Ì�ê×è�éQêJ¹ Í Ï Í è`O Í ì�à Í ê×è9Ó�Ð�Ø}Ì�Ð�óÖë ô �9áOÏÕè Í �YÅ ìw�9Ï�á�à"M Í }Ì�ì�ìÕá�O�ê6Ì Ð Í évÌk�F� Í è}ÌQM×з��� K êqÐ�Ø Í ÌPObØ<�}Ì�ê×Ï"ósr n d o n ô Ì�è}évÐÕØ Í ÓOáOÌPM K ÌOìZÐÕájR}è|é­�|á�MJ�gè9á�}4ênÌQMnìZÐ�Ø}Ì�ÐR}Wê6è9êJ}Wêu� Í éÐÕØ Í ÐÕá�Ð�ÌPMc� Í è}ÌPMqÐ�ê Í ì î Ì�è}éÛó � ô �}á�Ï�è Í �YÅ ì#�9Ï�á�à`M Í } Í)U � Í O�Ð Í é�ÐÕØ Í r n Å ì¨Ð�á�à Í éQênìÒÐÕê6è`O�Ð�Ì è}é KãÍVK á�è�Å ÐÐé¼ó�ìê6è�ÐÕØ Í OVÌ�ì Í á�y?ÐÕØ Í_¤ ®qpåÌPM×ÓOá�Ï�êqÐ�Ø�} á�yt�}á�Ï�è Í � î ÌvìÕáPM6ÔQÐ�ê×áOè�ÐÕávÐÕØ ÍjKãÍ ê6Ó�Ø�Ð Í é L ÏLM×ênìÒÐ]|ùé Í O�ágé9ê×è9Ó<�9Ï�á�à"M Í }Ø}ÌOìZÐÕØ Í �|á�Ð Í è�Ð�ê6ÌPM�ÐÕá�êu}_�9Ï�á�ï Í ÐÕØ Í é Í O áQéQê6è9Ó�á�yuO�á�è`OVÌ�Ð Í è}Ì Ð Í é&O�ágé Í ì�Ì�è}é�ê×è}é Í�Í é�ì Í ï Í ÏbÌQM��}Ì�� Í Ï�ì�é9á'vÖÔ}ìÖÐÐÕØ}ê6ì#j vOd î d TQî cPv l ézZØ Í }�Ì ê6èvÐ Í ObØ}è9ê�OVÌQM�Ï Í ìÕÔ"M×Ð�ÐÕáQé9ÌT� K ê�MNM�à Í ÐÕØ Í y�áPM�M×á K ê6è9Ó`w®xX \y\Ì¿{z��m|~}�� L"��M��?��t��~�����wN��`��VXW��:��Q��@N�VB�/�5Qj��N�V `���M����bL�Q��-�%�)��V����T�bL"� Û �)�º`�L�$�H^?�Mr­V��~���D�]^P�b_���^Q���r`��YM���×��VN��Q Ú �YM���� �@^P�H^jh s�� � � ß cn ImK â�� ês� Kø äóãÐMÌ��Ô9ê�OHx�Ó�M6Ì�è`O Í Ð�Ø Í M Í }_}�ÌP}�ÌT��è9á�ÐMì Í�Í }$ìÕÔ9Ï �9ÏÕênìÕê×è9ÓIéRÆùè}é ÍVÍ é�êJy KãÍ ì Í ÐMÌPMNM,ÐÕØ Í f n Å ì�ÐÕáaë î ÐÕØ Í è�ÐÕØ ÍM Í }_}�Ì­ê6ìÑêné Í è�ÐÕê~O�ÌPM9Ð�áBzZØ Í á�Ï Í }Gë T é vFéëz�á�ì ÍVÍ ÐÕØ}Ì Ð?Ð�Ø Í M Í }_}�̨ênì?éQáOê×è}Ó"ìÒá�} Í ÐÕØ}ê×è9Ó�éQ꺹 Í Ï Í è�Ð î è9á�ÐÕê~O Í ÐÕØ}Ì ÐÐÕØ Í M Í }_}�̨Ø}ÌOìÑÌÇ� Í O Ô"M6ênÌ Ïãà Í Ø}Ì ïgê×áOÔ9Ï K ê×ÐÕØvÏ Í ì]� Í O Ð?ÐÕá"ÐÕØ ÍgKãÍ ê6Ó�Ø�Ð�ìxf n Å ì�z ê×Ðãênì?è}á Ðg� _HN�VN�T���`��N�M��@NQ�`�/é � èÐÕØ Í á�è Í Ø}Ì è}é�êJy KãÍ Ð�Ì�x Í ÌQM�M.Ð�Ø Í%KãÍ ê6Ó�Ø�Ðbì î f n Å ì�Ì�ì KÑÍ MNM¢Ì�ì�h î Ì è}é�ì�ÌT�vé9á�Ô9à"M Í Ð�Ø Í } î ÐÕØ Í è�ÐÕØ Í ìÒá�M×Ô9ÐÕê6á�èì Í Ð�á�yc�1áPMu�gè9á�}WênÌQMnìJé9á Í ì�è9á Ð�ObØ}Ì�è9Ó Í é#��á KãÍ ï Í Ï î Ð�Ø Í M Í }Z}�Ì}�ÌT��è9á Ð�Ó�Ô}Ì�Ï�Ì�è�Ð Í�Í ÐÕá�R}è}éúÐÕØ Í ìÕáPM6ÔQÐÕê6á�è|ìK ê×ÐÕØ�Ð�Ø Í ìF}�ÌQM�M Í Ï KÑÍ ê×ÓOØ�Ð�ì î à9ÔQТ}Wê×ÓOØOÐãà Í Ì à"M Í Ð�á¨Ó�Ô}Ì�Ï�Ì�è�Ð Í�Í Ð�á�R}è}é�ÌQM�M|ìÕáPM6ÔQÐÕê6á�è}ì K êqÐ�Ø�ÐÕØ Í M6Ì�ÏÕÓ Í Ï KãÍ ê6Ó�Ø�ÐÐéÆùè}é ÍVÍ é�ì Í ÐÕÐÕê6è9Ó�ÌQM�M KãÍ ê6Ó�Ø�Ð�ì�ÐÕá � î Ì è|é�ì Í ÐÕÐÕê6è9Ó�h õ � d � aÓOê×ï Í ì�Ô}ìJÌjM×ênìÒÐ�á�y;ÌQM�M��1áPMu�gè9á�}WênÌQMnìZÐÕØ|Ì�ÐJÌ�Ó�Ï Í�ÍÌ è�Ô9è KÑÍ ê×ÓOØOÐ Í é�ì Í Ðãá�yB �éQênìÖÐ�ê×è]O�Ðc�|Ì ê6Ï�ì?ê×è � �ø � ­�|áOê×è�Ðbì[éiÏ Í è}éQê6è9Ó%f n Å ì;ÐÕá�ê×èR|è9êqз��ÓOê×ï Í ì�Ô|ì;Ð�Ø Í Ï Í ìÕÔ"M×Ð KãÍK Ì è�Ð7y�á�ÏZÐÕØ}ê6ì�ì Í O ÐÕê6á�è î ÌOì7�9Ï�á�ï Í èvà Í M×á K y�á�Ï }�ÌQM�MJ��é�?Z X - _�X \�z�B|eÔ�� �@��}�!-# � L"��M����Õt��~���s��N��`��VXW��:��Q��@N�VB�/�5Qj���$���)��V��1�?�5L`�R´�/ 0@±�²�° ¶EX�¦ - ¶ ±@À¢+ªÁ _ - ð 0 X \ ����`��VXW��:��Q��@N�VE���5Q����YM���� �@^P�H^�� s � � tÜT_ -�-n¯ Ïgê6è`O Í �Jê6ì�Ì èaê×è�Ð Í Ó Í Ï î KãÍ Ø|Ì ï Í �'q � � � ��� BëséÇÏ Í Ð�f K õ à�à�à õ f c õ f õ � � ó^ê?é Í é î MnÌ Ï�Ó ÍÍ è}á�Ô9ÓOØ�ÐÕØ}Ì Ð¨ìÒá�} Í M6Ì Ð Í ÏJê6è Í ��Ô}ÌPM×ê×ÐÕê Í ìTOVÌ èúà Í Ø}Ì è}é"M Í é ô Ì è}éLh õ �ià1f´Ì�è}é�Ì����"Mu��ÐÕØ Í ÌQM6Ó�áOÏÕê×ÐÕØ�}ôy�Ï�á�}Ý Í }_}WÌúë T é (QéRÆayÑÌP�1áPMu�gè9á�}WênÌQM$áaÌ ÓOÏ ÍVÍ ì K ê×ÐÕØúÐÕØ Í �1á�ê6èOÐ�ì Í ÐJáOèq���|áOê×è�Ðbì î ÐÕØ Í èúê×Ð�ì KãÍ ê6Ó�Ø�Ð Í é�Ì Ó�Ï Í�Í } Í è�ÐênìMÌ ÐgM Í ÌOìÖÐT�-f Ì�è}é�Ý Í }_}�Ìúë T é*(�ÓOÔ}Ì ÏbÌ è�Ð ÍVÍ ì�ÐÕØ}Ì ÐJÐ�Ø9ê6ì'�1áPMu�gè9á�}WênÌQM K êNM�Mkà Í ê6è`O¡M6Ô}é Í é�ê6èúÐ�Ø Í á�ÔQР�9ÔQÐ�M×ênìÒÐ�9Ï�á�ïgê6é Í é��-f s   � f"ó¢f£ Ûë ô î á�Ïvê×èäá�ÐÕØ Í Ï K á�Ïbé9ì î �9Ï�á�ïgê6é Í é�� s   � óÖët Ûë � f ô�õ � �   Kø éõÆ ÐO�Ì�èúà ÍWÍ Ì�ìÕê�MJ��ï Í ÏÕêNR Í é�ÐÕØ|Ì�Ð � �   KøL¤ � � � ��  릥§��Ì è|éúìÕá�Ð�Ø Í O á�è|éQêqÐ�ê×áOè}ìMÏ Í ��Ô9ê×Ï Í éÂy�á�Ï­Ì����`MJ�gê6è9ÓÝ Í }_}Z}Þë T é (�Ì Ï Í ê×è}é Í�Í é�ì�Ì�Ð�ê6ì5R Í éoézZØgÔ}ìãÐÕá¦O�á�è`O)M×Ô|é Í á�Ô9Ï�ÓOáOÌQM�ê×Ð�ìÒÔ9P�O Í ìãÐ�á�à9Ô9ê�M6évÐÕØ Í ÌQM6Ó�á�Ï�ê×ÐÕØ�}åÐ�Ø}Ì�ÐRÝ Í }_}�Ì�ë T é*(�O¡MnÌ êu}WìãÐ�á Í¡U ênìÖÐÐé

ë T |bë�ë £

Page 120: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

��C7�d�7��� EäI·�i�Í���æ����K� Ô9Ï�à}ÌOìÒê~O¢�9Ï�á�à"M Í }´Ì�Ð�ÐÕØ}ê6ì;ìÒÐ�Ì�Ó Í ênì¢ÐÕáTR}ÓOÔ9Ï Í áOÔQÐ;Ø9á K Ð�á�}�Ì�x Í ìÕá�} Í ÌQM6Ó Í à9Ï�Ì�ê�Oãì Í è}ì Í á�y1ÐÕØ Í�KãÍ ê6Ó�Ø�Ðbì¢ÐÕØ}Ì ÐÌ Ï Í Ó�ê6ï Í èúÐÕá�Ô}ì^é_Æ8é Í é î Ø}á K ÐÕá­}WáQéQêJyb��ÐÕØ Í é Í R}è9ê×ÐÕê6á�è�á�yÑÐÕØ Í {'|d�1áPMu�gè9á�}WênÌQMkìÒá�ÐÕØ|Ì�Ð��|áOê×è�Ðbì K êqÐ�بMnÌ Ï�Ó Í ÏKãÍ ê6Ó�Ø�Ð�ì8O�á�è}ìÒÐÕÏbÌ ê6è�Ð;êqÐi}Wá�Ï Í ÐÕØ|Ì è4ÐÕØ Í �|áOê×è�Ð�ì K êqÐ�Ø�ì]}�ÌQM�M Í Ï KãÍ ê6Ó�Ø�Ð î á�ÏkÐÕá�}�Ì�x Í ê×ÐtO¡M Í Ì�ÏkÐÕØ}Ì Ðã{¨�ÒÏ Í ìF� Í O�Ð�ì ��1á�ê6èOÐbì�á�yuMnÌ Ï�Ó Í Ï KãÍ ê6Ó�Ø�ÐR}Wá�Ï Í ÐÕØ}Ì�è�ÐÕØ Í �1á�ê6è�Ð�ì�á�ykìF}�ÌQM�M Í Ï KÑÍ ê×ÓOØ�Ð^éió¸è}Ì ÐÕÔ9ÏbÌQM�êné Í Ì î êJy KÑÍ OVÌ è­}�Ì�x Í Ì�èr�y�á�Ï }�ÌQM¢ì Í è}ì Í á�y;ê×Ð î ê6ì�ÐÕáO}WÌ�x Í Ð�Ø Í �1áPMu�gè9á�}WênÌQM¢Ó�áWÐ�Ø9ÏÕáOÔ9Ó�Ø��|áOê×è�Ð�ìJÌ�ì�}WÌ�è��vÐ�êJ} Í ìJÌOì�ÐÕØ Í ê6Ï KãÍ ê6Ó�Ø�Ð^é�ÏQá{~ìÕØ9á�Ô"Mné­�}ÌOìÕìZÐ�Ø9Ï�á�Ô9ÓOØ�ÌS�|áOê×è�Ð K ê×ÐÕØ KÑÍ ê×ÓOØOÐ � Ð K ê�O Í î K Ø9êNM Í ê×ÐJìÕØ9á�Ô`M6é­�}ÌOìÕì�ÐÕØ9Ï�á�Ô}Ó�Ø�ÌS�1á�ê6èOÐMá�y KãÍ ê6Ó�Ø�Ðë � î Ð Í èvÐ�êJ} Í ì�UÝ Í Ð�Ô}ì�R}ÏbìÖÐ�ì Í�Í Ì è Í¡U Ì�}_�"M Í á�y K Ø|Ì�Ð�êqÐ�} Í Ì�è}ìãÐÕá4Ø}Ì ï Í ÌjO Ô}ÏÕï Í �}ÌOìÕìÕê6è9Ó"Ð�Ø9Ï�á�Ô9ÓOØ�ÐÕØ Í �1á�ê6è�Ð"ó � d �Oô Ð K ê~O Í é

©©©©©©ò ò ò ò ò ò

ª�«&¬�­ª�«^®�­

zZØ ÍãÍ ��Ô}Ì ÐÕê6á�è"á�y9ÐÕØ}ê6ìuO Ô}ÏÕï Í ênì�ó o ÷ � r ô ó o ÷?¯ r ô�õ�� î á�Ï o ø|÷ ó �   ¯ ô r o   � ¯ r ø õ�� é�Æùè�ÐÕÔ}êqÐ�ê×ï Í Mu� î ê×ТênìuO¡M Í Ì�ÏK Ø}Ì ÐÑê×Т} Í Ì�è}ìÍy�á�ÏÑÌ�O Ô9Ï�ï Í ÐÕáZ�}Ì�ì�ì�Ð�Ø9ÏÕáOÔ9Ó�Ø�ÐÕØ Í á�Ï�ê×ÓOê×èWÐ K ê~O Í î Ì�è}éWÐ�Ø}Ì�ÐãÐÕØ ÍJÍ¡U Ì�}_�"M Í Ì�à|á�ï Í ê6è}é Í�Í é�éQá Í ììÕáFé�ó�è}ÌQMu��ÐÕê~O�ÌQM�Mu� î ÐÕØ9ênì�}�ÌT��à Í�Í¡U �"MnÌ ê6è Í é�ê×è�Ð Í Ï }�ì�á�y�Ð�Ø Í �|Ì ÏÕÐÕênÌQM,é Í Ï�ê×ï�Ì�Ð�ê×ï Í ì�á�yÑ{~Ì�ÐWó � d �Oô é���á KãÍ ï Í Ï îìÕê×è`O Í�KãÍ Ì Ï Í�K á�Ï x�ê6è9Ó¨á�ï Í ÏtR}è9ê×Ð Í R Í Mné9ìZá�y��|á�Ð Í èOÐ�ê6ÌPMNMu��ìF}WÌPMNM:ObØ}Ì�Ï�Ì�O�Ð Í ÏÕênìÒÐÕê~O î ÐÕØ Í �}Ì ÏÕÐÕênÌQM�é Í ÏÕê6ï�Ì�Ð�ê×ï Í ìc}WÌT�è9á�ÐÑà Í ê6è�y�á�Ï }�Ì�ÐÕê6ï Í�Í è9áOÔ9Ó�ØoéiÏgá KÑÍ Å M�M|é Í ìO Ï�ê×à Í Ð�Ø Í ÌPM×Ó Í à9ÏbÌ ê~O�é Í R|è9êqÐ�ê×áOèoéiz,á"Ó�Ô Í ì�ì�ÐÕØ}ê6ìãé Í R|è9êqÐ�ê×áOè î M Í ÐÑÔ}ìM6á�á�x�Ì Ð�Ð K á_y^Ì�}WêNM6ênÌ Ï Í)U Ì�}_�"M Í ì^éãß Í xgè9á K§K Ø}Ì Ð�êqÐw} Í Ì è|ì7y�á�ÏM̦O Ô9Ï�ï Í Ð�áP�}ÌOìÕì�ÐÕØ9Ï�á�Ô9ÓOØ\ó � d �Oô áOè`O Í |Ñê×Ð} Í Ì�è}ìkÐÕØ|Ì�Ð�ÐÕØ Í O á Í P¦O�ê Í èOÐ;á�y�ÐÕØ Í O�á�è}ìÒÐ�Ì�èOÐ�Ð Í Ï } }�Ô}ìÖÐÑà Í � Í Ï�áFé,Æùè�Ð�Ø Í�Í)U Ì�}_�"M Í Ì�à|á�ï Í î K Ø Í Ï Í Ð�Ø Í O�Ô9ÏÕï Í�}ÌOìÕì Í ì�ÐÕØ9Ï�á�Ô}Ó�Ø�Ð�Ø Í á�Ï�ê×ÓOê×èúÐ K ê�O Í î Ð�Ø Í O áOè}ìÖÐbÌ è�Ð�Ð Í Ï } Ì�ì KãÍ M�M�Ì�ìJÐÕØ Í }Wá�è}á�}Wê6ÌPM6ìMá�yãé Í Ó�Ï Í�Í áOè Í ó�ê/é Í é î rÌ è|é o9ô Ø}Ì ï Í � Í Ï�á�Ì�ìgO á Í P¦O ê Í è�Ðbì[é�p Í éQÔ`O ê6è9Óy�ÏÕá�}$ÐÕØ Í ì Í OVÌ�ì Í ì î KÑÍ Ó�Ô Í ìÕì�ÐÕØ|Ì�ШÌO�1áPMu�gè9á�}WênÌQM;{ �|Ì�ì�ì Í ìÐÕØ}ÏÕáOÔ9Ó�Ø�ó � d �Oô Ì Ð�M Í Ì�ìÒÐ7»"ÐÕêu} Í ì�êJy,Ð�Ø Í }Wá�è9á�}Wê6ÌPM6ìZá�y�ÐÕá�Ð�ÌPM�é Í ÓOÏ ÍVÍ M Í ì�ìãÐÕØ|Ì è­»"Ø}Ì ï Í ÌB� Í Ï�á�O�á Í P¦O ê Í è�Ð^é°�á K Ø9á K O�Ì�è KÑÍ�Í)U Ð Í è|é�ÐÕØ Í é Í R}è}êqÐ�ê×áOè�ÐÕáúÌ�è Ì Ï�à9êqÐ�Ï�Ì�ÏF���|áOê×è�Ðvó � d�¯ ô�± e � ¬ e � N zZØ Í è|Ì�ÐÕÔ}Ï�ÌPM K ÌT�ÐÕávéQá�ÐÕØ}ê6ìJê6ì�ÐÕá�ìÒØ9êJy=Ð�Ð�Ø Í ìF�QìÖÐ Í } ìÒá�ÐÕØ}Ì Ð�ó � d5¯ ô à Í O á�} Í ì�Ð�Ø Í áOÏÕê6Ó�ê6èoé�zZØgÔ}ì KãÍ Ì�ÏÕÏ�ê×ï Í Ì�Ð�Ð�Ø Í y�á�MNM6á K ê6è9Ó² �X�3�]�����s�Q�Fé�ó^ß Í ìÒÐÕÏ Í ì�ì�Ð�Ø}Ì�Ð�è9á�ÐÕØ9ê6è9Ó�ê6ìMà Í ê6è9Ó­�9ÏÕá�ï Í é�ìÕáOy^Ì�Ï�| KãÍ Ì�Ï Í vÖÔ}ìÒÐ�ÓOÔ Í ì�ìÕê×è9Ó�Ì�é Í R}è9ê×ÐÕê6á�èB*�M6Ì Ð Í ÏKãÍgK ê�M�M.è Í�Í évÐÕá_�9Ï�á�ï Í ÐÕØ}Ì Ð�ÐÕØ9ênì�ÌPO ÐÕÔ}ÌPMNMu� K á�Ï xQì�U ô¾^X �ëÀ,±b°�±�-$À�z�B|5û�³ �`��´�µ��[��¶��s·�´Z{�ó¢r d5¸ ô �`·1���)���&�¢¹�º�� pP» ¹��¢¹"�j�"�Q���`�4ó � d5¯ ô ·��%´��·����R»�����¶����&� ¼�·�´�´��¢¹"�_��b�X]`_¡�s�)�`�����½¼�¶����[�Q¶��s·Q´@�j�5¼%�-���-·�´ ² �$»Pº�����´N�¡�����¹`·��­»¨�5¼%�¢¹"���`��´�µ��:��¶��s·�´�{?¾�Ê ¿.ó¢r d5¸ ô-ÀbÁ$Âõ {�ó¢r�  � d�¸   ¯ ô·�º�M� �)º��PÃßäê×ÐÕØ�ÐÕØ Í Ì à1á�ï Í é Í R|è9êqÐ�ê×áOè�ê6è4Ø}Ì è}é î KÑÍ è9á K é Í ìO Ï�ê×à Í Ð�Ø Í áPÄQÐ�êNÅWê�Æ Í é�ÌPM×ÓOá�Ï�êqÐ�Ø"Å�Ç�á�Ï KÑÍ ê×ÓOØ�Ð Í é%Ä|á�MNÈgè9á�ÅWê6ÌPMR9ÐÕÐÕê6è9Ó`w´�/�- 0�±@²�° -H¶�X�¦ - ¶�X�_y- ��³� ±�� X À Ï Í Ð¨áPÇ� `éQênìÖÐ�ê×è`O Ð%Ä}Ì�ê×Ïbì�É�ósr n d5¸ n ô)Ê Ë?±�Ì :Í/Î î ê6è�Ð Í Ó Í Ï KãÍ ê6Ó�Ø�ÐbìTf�Ï d)aba)aBd f c Ì�è}é�Ì è�ê×è�Ð Í Ó Í Ï¨é Í ÓOÏ ÍVÍà|áOÔ9è}é � éÜ ¿ _ ¿`\ X ° X�_ ³ �þÐÕá�à Í ì Í Ð�M6Ì Ð Í Ï^é

ë T�Ð ë � �

Page 121: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

/ ° X ÁÑz$³ �¢ê×è|é�Ì4à9ê6ï�Ì Ï�ê6Ì Ð Í Ä1áPM�È�è}áPÅWê6ÌPM�{�ó¢r d5¸ ô áQÇZóÖë d� ô Ð KãÍ ê6Ó�Ø�Ð Í évé Í Ó�Ï Í�Í � ìÒÔ]ObØ�Ð�Ø}Ì�Ð wS �9áOÏ Í ï Í ÏÈ Ëx±{Ì :Í î ÐÕØ Í Ä|á�MNÈgè9á�Å4ênÌQM�{JÄ}ÌOìÕì Í ìÑÐ�Ø9ÏÕáOÔ9Ó�ØvÐÕØ Í Ä|áOê×è�Ð"ó¢r n d�¸ n ô Ì Ð�M Í Ì�ìÒÐ�f n ÐÕê�Å Í ì[éS {G�� � é/ ° X Á�Ò�³ �}Ì�O�Ð�á�Ï�{�ó¢r d5¸ ô Ì è|éváOÔQÐ�Ä}ÔQÐ�ÐÕØ Í M6ênìÖÐ�áPÇ�Ä1áPM�È�è}áPÅWê6ÌPM6ìëá�áPÇké Í Ó�Ï Í�Í Ì�Ð�ÅWáOìÒÐ � Ä9ÏÕá�ïgêné Í éBwS ¸"÷ á,ósr ô�Ê {�ó¢r d5¸ ô î Ì�è}éS á,ósr n ô?õ ¸ n Ç�á�Ï�Ì�Ð�M Í ÌOìÖÐ��ãï�ÌQM6Ô Í ìZáPÇ Ëx±{Ì :Í/é

Ó,á�ì ÍVÍ ÐÕØ}Ì Ð¨ÐÕØ Í è Í)K ÌQM6Ó�áOÏÕê×ÐÕØ"ÅÞìÖÐ�êNM�M?Ï�Ô9è}ì­ê6è�ÐÕê�Å Í Ä1áPM�È�è}áPÅWê6ÌPM�ê×è ß cn�Ô Ï f n Ì�è}é�� î KãÍ è ÍVÍ é�ÐÕá�ìÕØ9á KÐÕØ|Ì�Ð_ÏgÐ Í Ä ë�ênì�ìÕáPM6ï�Ì à"M Í ê6è�ìÕáLÅ"Ô]ObØ\ÐÕê�Å Í éÕÓZØ Í O�ÏÕê×ÐÕê~O�ÌPMxÄ}Ì�ÏÒÐ4áQÇ�ÐÕØ}ê6ì�ê6ì"ÐÕá�ìÒØ}á K ÐÕØ}Ì Ð"ÐÕØ Í O�á�è}éQê×ÐÕê6á�è|ìà Í ê6è9Ó Í èÇ�á�Ï�O Í é�Ø Í Ï Í Ì Ï Í ìÒÐÕê�MNMEM6ê×è Í Ì ÏMÌ è}é�Ø9á�ÅWá�Ó Í è9á�Ô|ì[é�°�á Ð Í ÐÕØ}Ì Ð�Ð�Ø Í O�á�è}éQê×ÐÕê6á�è�à Í ê6è9Ó Í èÇ�áOÏO Í é^Ç�á�Ï�{ÐÕájÄ}ÌOìÕìãÐ�Ø9Ï�á�Ô9ÓOØ�ÐÕØ Í á�Ï�ê×ÓOê×è�Å"Ô"M×ÐÕê�Ä"M Í ÐÕê�Å Í ì%·�º��M×ê6è Í Ì�Ï�Ì è}évØ9á�Å4áOÓ Í è9á�Ô}ì^é¢ßäØ}Ì�Ð KãÍ è Í�Í é�Ð�á Í ìÖÐbÌ à"M6ênìÒØ�ê6ìÐÕØ|Ì�ÐZÐÕØ Í ìÕØ9êNÇ=ÐÕê6è9ÓWáQÇ,Ì�Ä|á�MNÈgè9á�ÅWê6ÌPM[M Í ÌOé9ìÑÐÕá�O á Í P�O�ê Í è�Ð�ìÑÐÕØ}Ì Ð�Ì Ï Í M6ê×è Í Ì ÏZê6è�Ð�Ø Í O á Í P¦O ê Í è�ÐbìÑáPÇ¢{¾é3ÓZØ9ênìãê6ìÍ ìÒÐ�Ì�à"M6ê6ìÕØ Í évà Í M6á K éÜT_ -�Ác-$²�±b°�±@-nÀÖz�B|nm�� ¹`��_�� �^]`_¡�s�)�`���%�½¼T�¢¹"���"�Q´�µ��[�Q¶��s·Q´1{?¾�Ê ¿�ó¢r d5¸ ô-ÀbÁ$Âõ {�ó¢r%  � d5¸   ¯ ô ·Qº���´����[��·�º����q�¢¹"�_��b�X]`_¡�s�)�`���%�½¼�{¦ÃÜT_ -�-n¯ ß Í¦K ê�M�MxÄ9Ï�á�ï Í ÐÕØ}ê6ì"à�ÈaÓ�ê6ïgê×è9Ó�Ð�Ø Í O á Í P�O�ê Í è�Ð�ì¨áPÇ�{%¾�Ê ¿ Í¡U Ä"M6ê�O�êqÐMNÈ�é^ÓZØ}ê6ì­ênì�×ÖÔ|ìÖÐ�Ì�è�á�ÏbéQê×è|Ì ÏÈO�ÌPM�O�Ô"MnÌ�ÐÕê6á�è�éwß Í Ó Í Ð4Ð�Ø Í O á Í P¦O�ê Í èOÐ�áPÇgr n ¸ ½ ê6èä{ ¾�Ê ¿ ÍbØ Ô}ÌPM6ì ß nNÙsÚ[n Ê ½ Ù¢Ú ½ â n Ùn ä â ½ Ù½ ä � n Ù þ n ¯ ½ Ù þ ½bÛ n Ù ½ Ù K Ø Í Ï Í{�ósr d5¸ ô;õ ß�n Ê ½ Û n ½)r n ¸ ½ é°�á K�KãÍ OVÌ è�ÓOá"Ì à1á�Ô9Ð?ÐÕØ Í Ä9Ï�ágáQÇ.ê6è�á�Ô}ÏÑÔ}ìÕÔ}ÌPM]Å�Ì è}è Í ÏÐé,ß Í ìÖÐbÌ ÏÕÐ K ê×ÐÕØ�Ð�Ø Í áOà}ì Í Ï�ï Ì ÐÕê6á�èWÐ�Ø}Ì�Ð�̨è9áOè Ð Æ Í Ï�áÄ1áPM�È�è}áPÅWê6ÌPM.éQá Í ì Í)U ênìÒÐ î Ä9Ï�á�ïgê6é Í é KãÍ Ä9ê~O�Ü��þÐÕáWà Í M6Ì�ÏÕÓ ÍJÍ è9á�Ô9ÓOØoéÜT_ -�Ác-$²�±b°�±@-nÀÖz�B|nu�� ��º^·��`µL�)���p`�)�1_����5¼ ² �~���/���1_)�t�"�Q���`����ó¢r�Ï d�¸ Ï ô d)a)aba�d ósr c d�¸ c ôj± e � ¬ e � Ú ·Q� ² �[�Q�}��[�$»�·��/���1�����]�$�$»Pº�·�´ Û �¡��»1¹�����f Ï dba)a)amd f c Ú �¢¹"�)º��j�Õt��~�����?·V�[�Q�}�X� �)º��g�`��´�µ��:��¶��s·�´.{Ý�5¼"óÖë d� ô � Û �¡��»1¹��-� ²&² �$»Qº��·���¶��1��� � � � ß cnNÔ Ï â�� ê¢� Ïø ä �bp}_�¹&�¢¹"·Q�¢{J�`·1���)�¡�T�¢¹�º��pP»1¹�ó¢r n d5¸ n ô ·���´N��·1����f n �/��¶j�¡�3¼¡��º��)�1�)º�µ Ëx±ÕÌ :Í-ÃÜT_ -�-n¯ í Ì�ObØ&O�á�è}é9êqÐ�ê×áOè�áQÇkÐÕØ Í Ç�á�ÏÅ${ÞÅ"Ô}ìÒÐ�Ä}ÌOìÕì�ÐÕØ9Ï�á�Ô9ÓOØ\ó¢r n d�¸ n ô Ì�Ð�M Í ÌOìÖÐ�f n ÐÕê�Å Í ì î ÐÕÔ}ÏÕè}ìJê6èOÐ�á�ÐÕØ ÍO áOè}éQê×ÐÕê6á�èWÐ�Ø}Ì�Ð â�� ê � Ïø ä O�á Í P¦O ê Í è�Ð�ì?áQÇ�{ � ê Ê � ê Å�Ô}ìÒÐ?à Í Æ Í ÏÕáIémÆùèWÐ�Ô9ÏÕèWÐ�Ø Í ì Í Ð�Ô9Ï�è�ê×è�ÐÕá â�� ê � Ïø ä Ø}áPÅWá�Ó Í è9áOÔ}ìM6ê×è Í Ì Ï�O áOè}éQê×ÐÕê6á�è}ìÑá�è�ÐÕØ Í O á Í P¦O�ê Í èOÐbì?áPÇ¢{âó^à�È_Ñ?ÏÕá�Ä|á�ìÒê×ÐÕê6á�èúë T é c ô éEÓZØgÔ}ìãÌQM�M�ê×è�ÌQM�M KãÍ Ø}Ì ï Í ß cn�Ô Ï â/� ês� Ïø äØ9á�Å4áOÓ Í è9á�Ô}ìtM6ê×è Í Ì Ï�O áOè}ìÖÐ�Ï�Ì�ê×è�Ðbì[éëóÿìÒê�ÅjÄ"M Í OVÌQM~O Ô"MnÌ�Ð�ê×áOè�ìÒØ}á K ì;Ð�Ø}Ì�ÐZÐÕØ Í ègÔ"Å�à Í ÏZáQÇ�O�á Í P¦O ê Í è�Ð�ìãáQÇZóÖë d� ô ÐKãÍ ê6Ó�Ø�Ð Í é�é Í ÓOÏ ÍVÍ Ì�ÐgÅWáOìÒÐ � � � ß cn�Ô Ï â/� ê � Ïø ä ênì�Å4áOÏ Í ÐÕØ}Ì�è¥ß cnNÔ Ï â�� ê � Ïø ä Ì è}é�Ð�ØgÔ}ìJÌ�è9á�è Ð Æ Í Ï�á�ìÒá�M×Ô9ÐÕê6á�èÐÕá4Ð�Ø Í Ø9áPÅWáOÓ Í è}á�Ô}ì�M6ê×è Í Ì Ï�ì�ÈQìÖÐ Í Å Í)U ê6ìÒÐ�ì^éÏgájÇ^Ì�Ï KÑÍ Ø}Ì ï Í Ä}ÏÕá�ï Í é�ÐÕØ}Ì Ð�Å"Ô"M×ÐÕê�Ä"M6ê�O�êqÐ�ê Í ì�O�Ì�èvà Í Ø}Ì�è}éM Í é�étßÑÔ9Ð KÑÍ Ø}Ì ï Í è�Å Ð�Ï Í M6Ì Ð Í é�ê×Ð�ÐÕáWÐ�Ø Í Ä9Ï�á�à"M Í ÅÌ�Ð�Ø}Ì�è}é Ð K Ø�ÈvéQá Í ì�Å�ÌPÜ�ê6è9Ó�{YÄ}Ì�ì�ìãÐÕØ9Ï�á�Ô}Ó�Ø�Ì�Ä1á�ê6è�Ð�f n ÐÕê�Å Í ì î Ø Í M�Ä KÑÍ ê×ÓOØOÐZÐ�Ø9ê6ì�Ä|áOê×è�Ð�f n ÐÕê�Å Í ìbNß Í ìÖÐbÌ ÏÕÐãÐ�ájÄ9ÏÕá�ï Í Ð�Ø9ênì�à Í M×á K w®xX \y\Ì¿{z��m|szQ�ÖÕ ¼"{�ósr d�¸ ô �"·����¡�¡�V�¢¹�º�� pP» ¹£·��"�Q���`�­ó � d5¯ ô ·Q��´N��·�����fà����¶�����·Q� ² á��~��·Q�`µj�`��´�µ��[��¶��s·�´��p}_¹���¹`·��ná,ó � ô;õ ¯ Ú �¢¹"�)�úó¢r ÷ � ô � ² ��� � ² �¡�%�¢¹"���"�Q´�µ��[�Q¶��s·Q´`á�ó¢r ô ÀbÁ$Âõ {�ó¢r d á,ósr ôÕô Ã

ë T�Ð ë � ë

Page 122: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ÜT_ -�-n¯ �¢ê×ÏbìÒÐ�à�ÈwÐ�Ï�Ì�è}ì�M6Ì ÐÕê6á�è î KãÍqK ê�MNMJÐÕÔ9Ï�èäÐ�Ø9ê6ìvê6èOÐ�áwÌ Ø Ô Í ìÖÐ�ê×áOèÛÌ à1á�ÔQÐ�ó � d �Oô é Ý Í Ð�{?¾�Ê ¿.ó¢r d5¸ ôúõ{�ósr&  � d�¸   ¯ ô é Ý Í Ð'á[¾�Ê ¿�ó¢r ô�õ á¢ó¢r&  � ô ÷�¯ épÏgê6è`O Í á,ó �Oô�õe� î KãÍ Ø}Ì ï Í r`é9ê×ïgêné Í ì'á:¾�Ê ¿.ó¢r ô épÝ Í Ðá�¾�Ê ¿�ósr ô?õ {?¾�Ê ¿.ó¢r d á[¾�Ê ¿�ó¢r ôÒôÑõ {�ó¢r?  � d á,ósr�  � ôÒôÑõ á�ó¢r�  � ô é3ÓZØ�Ô|ìMósr ÷ � ô � é9ê×ïgêné Í ìtá�ó¢r ô êNÇ¢Ì�è}é�á�è`MNÈêNÇ�r � éQê×ïgêné Í ì�á�ó¢r?  � ô?õ á�¾�Ê ¿.ó¢r ô éiÆùè�á Ð�Ø Í Ï K á�Ïbé9ì KÑÍgK ê6ìÕØvÐÕáWìÒØ9á K ÐÕØ}Ì ÐãÐ�Ø Í ÅWá�è9á�Å4ênÌQMnìÑáQÇ¢é Í Ó�Ï Í�Í M Í ì�ìÐÕØ|Ì è�fÛê6èjá�¾�Ê ¿WØ}Ì ï Í Æ Í Ï�á?O á Í P�O�ê Í è�Ð^éußÑÔ9Ð;ÐÕØ9ênìÑê6ì;ì�Ègè�Ð�ÌPO ÐÕê~O�ÌPMNM�ȨÐ�ÏÕÔ Í é;{?¾�Ê ¿WØ}ÌOì�è9á­Ð Í ÏÅWì?áQÇ�ÐÕá�Ð�ÌPM}é Í ÓOÏ ÍVÍM Í ì�ì�Ð�Ø}Ì èqf Ì è}é KãÍ Ì�Ï Í ìÒÔ9à|ìÖÐ�êqÐ�ÔQÐÕê6è9Ó¦Ç�áOÏ ¸ Ì�Ä1áPM�Ègè9áPÅWênÌQMná[¾�Ê ¿.ó¢r ô ÐÕØ|Ì�ÐJênìJêqÐbì Í M�ÇÑ̦Å"ÔQÐM×ê�Ä"M Í áPÇ3r�é�ÓZØgÔ}ìÌQM�M�Ð Í Ï�Å�ì�Ø|Ì ï Í é Í ÓOÏ ÍVÍ Ì Ð�M Í Ì�ìÒÐ�fÑéÓZØ Í Ï Í ìÒÐ;áQÇ K Ø}Ì Ð KãÍ�K Ì�è�Ð;ê6ì?è9á K ìÒÐÕÏbÌ ê6Ó�Ø�Ð�Ç�á�Ï K Ì�Ï�é�é�ß Í�K ê�M�M|ìÕØ9á K ÐÕØ}Ì Ð?ê�Ç:Ç�áOÏÑìÕáPÅ Í é Í ÓOÏ ÍVÍ�� Ä|á�MNÈgè9á�ÅWê6ÌPMá î Ð�Ø Í�KãÍ ê6Ó�Ø�Ð�ìZáPÇ�Ä1á�ê6èOÐbì¨ó¢r n d�¸ n ô K Ø Í Ï Í á¢ó¢r n ô?õ ¸ n ìÕÔ"ÅâÐ�á�ÅWáOÏ Í ÐÕØ|Ì èvÐÕØ Í óÒë d� ô Ð KÑÍ ê×ÓOØOÐ Í évé Í ÓOÏ ÍVÍ áPÇk{ îÐÕØ Í è ¸"÷ á,ósr ô Å�Ô}ìÖÐ�éQê6ïgê6é Í {¾é®xX \y\Ì¿{z��m|sz[z Æm�)�9{�ó¢r d5¸ ô ×���·��`µ3�"�Q´�µ��[�Q¶��s·Q´]�½¼ãóÖë d� ô � Û �¡��»1¹��-� ²�² �$»Pº����k���¢¹"·Q�:�¡·Q���~����������¹`��_�Q� ² �����s�Q�"��½¼Ñr[�$�-��sPÃ�r|p �P�`�1�)��á��~��· ² �/»Pº���� � �`��´�µ��:��¶��s·�´"��p}_�¹���¹`·�� ß�â�n¢ãä c1å o f ý � ê ÿ Ô � êsæ f nxç � Ú �¢¹"�)� ¸¢÷ á¢ó¢r ô ² ��� � ² �¡�{�ósr d5¸ ô ÃÜT_ -�-n¯ Ý Í Ð8á�ósr ô?õ {�ó¢r d á¢ó¢r ôÕô é3ÓZØ Í èjá"Ø}ÌOì;é Í ÓOÏ ÍVÍ Ì�Ð3ÅWáOìÒÐÑ�ªé¢ß Í�K ênìÒØ4ÐÕá�ìÒØ9á K ÐÕØ|Ì�Ð8á�ênì�êné Í è�Ð�ê�OVÌQM�MNÈÆ Í ÏÕáIéE�}á�ÏãÌ?ObØ}Ì è}Ó Í�KãÍ�K á�è�Å ÐãéQá¨ÐÕØ9ênì?à�È�ìÕØ9á K ê×è}Ó�ÐÕØ}Ì Ðãê×ÐÑØ}ÌOì3ÅWá�Ï Í Æ Í Ï�á Í ì�Ð�Ø}Ì è��åà}ÔQÐãà�ÈWìÒØ}á K ê×è9Ó¨ÐÕØ}Ì ÐÌ�Ä1áPM�Ègè9áPÅWênÌQM1áQÇ.é Í ÓOÏ ÍVÍ Ó�Ï Í Ì Ð Í Ï�ÐÕØ}Ì�è��âéQê6ïgê6é Í ìÑêqÐ�ó^Ì è|éWÐÕØ9ênì�O�Ì è�Ø|ÌQÄ"Ä Í è�áOè"M�È�Ð�á­ÐÕØ Í Æ Í Ï�á�Ä|á�MNÈgè9á�Å4ênÌQM ô éÝ Í Ð�� õ É Ë¦±ÞÌ :Í Ê ¸ n õ á¢ó¢r n ô Î2éS°�á�Ð Í R}ÏbìÖÐ4ÐÕØ}Ì ÐjÇ�á�Ï Ë d ¸ ± � î r n �õ r ½ ìÒê6è`O Í á�ÐÕØ Í Ï K ênì Í^KãÍ�K á�Ô"MnéØ}Ì ï Í?¸ n õ á¢ó¢r n ô�õ á¢ó¢r ½ ô�õ ¸ ½ Ì�è}é�ÐÕØgÔ}ì4ó¢r n d5¸ n ô�õ ó¢r ½ d5¸ ½ ô ég° Í¡U ÐJè}á Ð Í ÐÕØ}Ì Ð�Ç�áOÏ Í ï Í ÏÈ Ë�± � î KãÍ Ø}Ì ï Íó¢r ÷ r n ô � ê éQê6ïgê6é Í ìgá�ó¢r ô ó^à�È�Ý Í Å�Å�Ì�ë T é×ë � éZÑ;ÔQÐÕÐÕê6è9Ó�ÐÕØ Í ì Í Ð�á�Ó Í ÐÕØ Í Ï î KÑÍ Ó Í Ð�è nsã�é ósr ÷ r n ô � ê éQê×ïgêné Í ìá�ó¢r ô é�ó�ê Í Ï Í%KãÍ Ì�Ï Í Ô|ìÒê6è9Ó�Ð�Ø Í Ç^Ì�O�Ð�Ð�Ø}Ì�ÐJÐÕØ Í r n Å ìMÌ Ï Í éQênìÖÐ�ê×è]O�Ð^é L�Í ÌPMNM�È K Ø}Ì�Ð KÑÍ ìÕØ9áOÔ"M6é�á�à}ì Í Ï�ï Í R}ÏbìÒÐ�ê6ìÐÕØ|Ì�ÐãÐÕØ Í M Í Ì�ìÒÐ�O�áPÅjÅWá�è¦Å�Ô"MqÐ�êNÄ`M Í áQÇ.Ð�Ø Í ó¢r ÷ r n ô � ê Å ìãéQê×ïgêné Í ìtá é8ÓZØ Í èvÔ}ìÒê6è9Ó"ÐÕØ Í éQênìÖÐ�ê×è`O ÐÕè Í ìÕìãáPÇ�ÐÕØ Í r n Å ìKãÍ ìÕØ9áOÔ"M6é�O¡MnÌ ê�ÅåÐÕØ|Ì�ÐZÐÕØ Í Ä}ÏÕáQéQÔ`O Ð�éQê×ïgêné Í ìtá é3ßãÔQÐZÐÕØ9ênì K áOÔ"Mné�Ï ÍbØ Ô9ê6Ï Í é Í R}è9ê6è9ÓjM Í Ì�ìÒÐ�O�áPÅjÅWá�è^Å"Ô"M×ÐÕê�Ä"M ÍÍ Ð�OYé ô °�á KÞKÑÍ Ì Ï Í éQá�è Í ìÕê6è`O Í ÐÕØ Í Ä|á�MNÈgè9á�Å4ênÌQM è nsã�é ósr ÷ r n ô � ê Ø}Ì�ì¨é Í Ó�Ï Í�ÍPß â5nsãä c1å o f ý � ê ÿ Ô � ê æ f nTç � îÐÕØgÔ}ì�È�ê Í MnéQê6è9Ó4ÐÕØ}Ì Ð�á � � éß Í ÅWÌ1È�è}á K Ø}Ì ï Í Ì^Ä9Ï�ágáQÇ?áPÇ¢Ý Í ÅjÅWÌ�ë T é*( K ê×ÐÕØ�ÐÕØ Í ÌPM×ÓOá�Ï�êqÐ�Ø"Å é Í ì�O�ÏÕê6à Í é Í¡U Ä"M6ê�O�êqÐMNÈ î Ì�ì­ìÕÔ"ÅjÅ�Ì Ï�êNÆ Í éà Í M6á K w�?Z X - _�X \�z�B|�zÒ��b���:}!$#B� ¹"�%·Q´ »���º����¢¹�¶�´�/�- 0@±�²�° - ¶EXr¦ - ¶EX�_y- � Û ���¢¹��¢¹"�g�)�)���/����»�� õ � � � ß cn�Ô Ï â � ê � Ïø ä�)��´����¡�Ý��¹`��WJX ±X+]ZY° X�¶ ´�/ 0@±@²�° ¶�X�¦ - ¶ ±�À,+ Á _ - ð 0 X \ ���ë�`��´�µ��:��¶��s·�´§����¶��ì�[º��Q�b� ² � ² h ç� � ��ß cn�Ô Ï â � ês� Ïø ä ÃL�Í O�ÌQM�M|ÐÕØ}Ì ÐZÌOì;Ð�Ø9ê6ì�O�á�è`O)M×Ô}é Í ì?ÐÕØ Í Ä9Ï�á�áPÇ.áQÇ�ÓZØ Í á�Ï Í Å ë T é d K Ø9ê~ObئÅ�Ì1È4à Í O á�è|ìÒêné Í Ï Í é�ÐÕØ Í Å�Ì ê6è�ÐÕØ Í á�Ï Í ÅáQÇ¢ÐÕØ}ê6ì�M Í O ÐÕÔ9Ï Í é�M����� í��JÚ~¦­!����ÝîÞ�J����!�¦¨¥�)ï�¦M�k �4� ���ÛÝÞ������������ð' ¥ ���"!;��k©�(û�ß Í è9á K Å4á�ï Í ÐÕá K Ì Ïbé9ì�Ì èäÌ à|ìÖÐ�Ï�Ì�O�ÐÕê6á�è áQÇ�Ð�Ø Í ÌQM6Ó�áOÏÕê×ÐÕØ`Å Ì à1á�ï Í é ß Í ÅWá ÐÕê6ï�Ì�Ð Í à�È�O áOè}ìÒêné Í ÏÕê6è9Ó�ÐÕØ Íé Í O áQéQê6è9Ó%Ä9Ï�á�à`M Í ÅñÇ�á�ÏZÌ�Ç^Ì ê6ÏMNÈ�éQêJ¹ Í Ï Í è�Ð�O�ágé Í z ÐÕØ Í ìÑØ9ê6è Í ì Í�L�Í Å�Ì�ê×è}é Í ÏRìÑágé Í zòM Í O�Ð�Ô9Ï Í ékß Í ÌQM6Ï Í Ì�é"Èé Í R}è Í évÐ�Ø9ê6ì�O áQé Í ê×è�Ì�Ä9Ï Í ïgê6á�Ô}ì�M Í O ÐÕÔ9Ï Í ékß Í ìÖÐbÌ ÏÕÐZà�ÈvÏ Í O�ÌQM�M6ê×è9Ó�ÐÕØ Í é Í R}è}êqÐ�ê×áOèoé

ë T�Ð ë ���

Page 123: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ó�C�ôDC�ô5ó h¨õ�ö�÷�ømù�ø�ú�ø�KÞûuö�÷�ý�øBüÛh¨ýZý�ømùyû8÷JýþG�ø�i:ý�ý�ö�÷�ÿß Í ìÖÐbÌ ÏÕÐ K ê×ÐÕØ�Ð�Ø Í O¡MnÌ�ì�ìÒê~O�ÌPM��HìÑØ9ê6è Í ì Í­L�Í Å�Ì�ê×è}é Í Ï�ÓZØ Í á�Ï Í Å��Qé�?Z X - _�X \�z�B|�z���� l Z��@À X��bX�VX \Ó¿�@À�� X�_ �?Z X - _�X \ � l � ��#b# Æ��)��á Ï d á ø d)a)abaBd áYÉ_×�E�"�������/���������]�$�$»��¡º���¢¹"·���·Qº����`·���º Û �~�)��º�¡´N·Q�������)´�µ��[º���¶��bà � ¹`�¡� Ú ��¹`��¶j·��kì L Ó��¢¹"·Q���$·yÊP�¡� � ±���� �-����¹`� � �-�Dp �[´N� í ��ó$ÅWáQéá:Ï ô dba)a)amd ��ó�ÅWágé�á É ô ï Ú#Û ¹"�)º��SÈ õ è Én�Ô Ï á n Ú �~�^·k×)� �)�b_¡�/�s���:à � pº���¹`�¡º�¶���º�� Ú ��¹`�¡º��·�º��%�`��´�µ��:��¶��s·�´��/��¶j�·�´ »��Qº�����¹¶%�?�-��_���¶��1p�-�'ì L Óì·�� Û �¡´�´�·������s�����`���)º��¡� ÃÆùè\á Ð�Ø Í Ï K á�Ïbé9ì î � ±�� � ênìTÇ�Ô"M�M�È�ì�Ä Í O êNR Í é�ÓOê×ï Í è�êqÐbì¨Ï Í ìÕê6é9Ô Í ìTÅWáQéQÔ"M6áPá:Ï d)aba)a�a á É é^ÓZØ Í ì L ÓÞO�áQé Í ê6ìà}ÌOì Í é�áOè4ÐÕØ Í áOà}ì Í ÏÕï�Ì ÐÕê6á�è�ÐÕØ}Ì Ð?ì5Ä Í O�ê�Ç¢Ègê6è9Ó�� ±� � ÅWáQéQÔ"M6á¨ÌgM6Ì�ÏÕÓ Í è�Ô`Å"à Í Ï;áPÇ1Ï Í MnÌ�Ð�ê×ï Í M�È?Ä9Ï�êNÅ Í ê6èOÐ Í Ó Í Ïbìó¢MnÌ Ï�Ó Í Ï;Ð�Ø}Ì èvÐÕØ Í ÅWê×è}êNÅ�Ô"ÅâÏ ÍbØ Ô9ê6Ï Í é ô ÓOê×ï Í ìãÌ"Ï Í éQÔ}è}é9Ì è�ÐãÏ Í Ä9Ï Í ì Í è�Ð�Ì�Ð�ê×áOè�áQÇ��,ékß Í Ç�áOÏ�Å�ÌQM6ê�Æ Í Ð�Ø9ênìZè Í¡U Ð^éÝ Í Ð�á Ï ¤ á ø ¤ aba)a ¤ á c à Í Ä9Ï�êNÅ Í ì î Ì è}éÕM Í ÐZÈ õ è ÉnNÔ Ï á n Ì è}é�� õ è cn�Ô Ï á n K Ø Í Ï Í�� ¤ ¬é�ÓZØ Í è îí ��ó¢ÅWáQé�á Ï ô dba)abaBd ��ó¢ÅWáQéTá c ô ï ênì�Ì�Ï Í éQÔ9è}é9Ì�è�Ð&�)�1_�� ² ����»váQÇ��é�ÆùèSÄ}Ì ÏÕÐÕê~O Ô"MnÌ Ï î Ó�ê6ï Í èwÌ è�È � á�ÔQÐ4áQÇ�ÐÕØ Í �Ä|á�ìÕìÕê6à"M Í Ï Í ìÒênéQÔ Í ì î KÑÍ OVÌ è\Ï Í O�á�ï Í Ï��²Ô9è9ê Ø Ô Í M�Èsé­Æ Ð?Ç�á�MNM6á K ì�ÐÕØ|Ì�Ð"Ð�Ø Í�Í è`O áQéQê6è9Ó�áPÇ�Ì�è�È�Ð K á�Å Í ìÕì�Ì Ó ÍÅ"Ô|ìÖÐJé9ê�� Í Ï�ê6è�Ì�Ð�M Í Ì�ìÒÐ �4÷ ë�Ä1áOìÕê×ÐÕê6á�è}ì î ìÕáWÐÕØ9ênì Í è`O áQéQê6è9Ó¦Ègê Í Mné9ì�Ì��Vós d�:d ÷y�   ë ô O�áQé Í �Fé�ÓZØ9ênì�O�ágé ÍÅWá Ð�ê×ï�Ì�Ð Í ìãÐ�Ø Í è}Ì�Ð�Ô9ÏbÌQM;ó¢M6ênìÖÐ Ð ô é Í O�ágé9ê×è9Ó�Ä}ÏÕáOà"M Í Å©é� � i��]l�7 �"! ê×ï Í è_á Ï ¤ a)aba ¤ á c î � ¤ �Ì è}é�ÌjO áQé ÍbK áOÏ�é�O á�Ï�Ï Í ì�Ä|áOè}éQê6è9Ó"Ð�áWÐÕØ Í Ï Í ìÕênéQÔ Í ì í$# Ï d)a)abaBd # c ï é% k�&(' �¢ê6è}é�Ì)� ± É � d ë dba)a)a:d è Én�Ô Ï á n ÷ ëQέìÒÔ`ObØ�Ð�Ø}Ì�Ð���ó½ÅWáQé�á n ô?õ�# n Ç�á�Ï�Å�Ì è�È�ï�ÌPM×Ô Í ì�áQÇ Ë é

l � �+*,� �.- -0/�X�1 -2���43,+ ÜT_ - ð 0 X \6524365,798;: á Ï ¤ a)aba ¤ á c î ê×è�Ð Í Ó Í Ï'È î Ì�ï Í O�ÐÕáOÏ­áQÇãÏ Í ìÒênéQÔ Í ì í7# Ï d)aba)a�d # c ï î Ì è|éaÌ�è�Ì�Ó�Ï Í�Í Å Í èOÐÄ}Ì ÏbÌQÅ Í Ð Í Ï��8é2ji:kml �¢ê6è}é�Ì?M×ênìÖÐãáQÇ.ÌQM�M8� ±9� � ìÕÔ`ObØ�Ð�Ø}Ì�Ð î ��ó¡ÅWáQé�á n ô;õ6# n Ç�á�ÏãÌ�ÐxM Í ÌOìÖÐ��¢ï�ÌPM×Ô Í ì?áPÇ Ëx±ÕÌ :Í]é: Ô9Ï�Ä`M6Ì�è�ÐÕá�Ó Í ÐJÌ�é Í O áQéQê6è9Ó�ÌPM×ÓOá�Ï�êqÐ�Ø"ÅìÇ�áOÏ�ÐÕØ}ê6ì�Ä9Ï�á�à"M Í Åþê6ì�à�ÈvÐÕØ Í Ç�áPM�M6á K ê×è9Ó�ì ÍbØ Ô Í è`O Í áPÇ;ìÖÐ Í Ä}ìbw��¢ê6Ï�ìÒÐ îKãÍgK ê�M�M:R}è}é�Ì�O�áPÅjÅWá�èvÓ Í è Í ÏbÌQM6êNÆyÌ�ÐÕê6á�è�áQÇ�Ð�Ø Í­L�Í�Í é Ð ÏgáPM6áPÅWá�è�Ì è}éÂì L ÓÖO�ágé Í ìb*"° Í¡U Ð î KÑÍTK ê�MNM;��M×êNÇ=Ð<�4á�Ô}ÏÌQM6Ó�áOÏÕê×ÐÕØ`ÅÝÇ�á�Ï�é Í O�ágé9ê×è9ÓqÇ�á�Ï L Ï�é Í O áQéQê6è9Ó�Ð�á�ÐÕØ9ênì�O áPÅjÅWá�è�Ó Í è Í Ï�ÌPM×ê�ÆVÌ ÐÕê6á�èoé^ÓZØ9ê6ì K áOè2= Ð Ø Ô}êqÐ Í Ó�ê6ï Í Ô}ìÌ è�ÌQM6Ó�áOÏÕê×ÐÕØ"Å Ç�áOÏJÐ�Ø Í O á�Å�ÅWáOèúÓ Í è Í ÏbÌQM6ê�ÆVÌ�Ð�ê×áOè î à9ÔQÐ¨Ì èaá�ÔQÐM×ê6è Í áQÇãá�è Í é%�¢ê×è}ÌPMNM�È î KãÍ�K êNM�M;ì5Ä Í O�ê6ÌPM×ê�Æ Í ÐÕØ Í�ÕÌPM×ÓOá�Ï�êqÐ�Ø"Å���ÐÕá�Ð�Ø Í O�ÌOì Í áPÇcì L ÓÑO�áQé Í ì�Ì�è}é�ÐÕØ Í èqÄ9Ï�á�ï Í ê×Ð�ì Í P¦O ê Í è`O)È�Ì�è}é�O áOÏÕÏ Í O ÐÕè Í ìÕì^étÓ,áQé9Ì1È KãÍ?K ê�MNMÅWá�ï Í ÐÕá K Ì Ïbé9ìÑÐÕØ Í R|Ï�ìÒÐ�áQÇ,ÐÕØ Í ì Í ìÒÐ Í Ä}ì[éó�C�ôDC�ô4> EäI½ÿ3ø�H�ü"ûÑú�ø � ö½øo�ÓZØ Í ìÑØ9ê6è Í ì Í�L�Í Å�Ì ê6è}é Í Ï�ìÑágé Í ì�Ì è|é�ÐÕØ Í�L�Í�Í é Ð Ïgá�M×á�ÅWá�è­ìÑáQé Í ì�ÅWÌ1È�à Í ïgê ÍbKÑÍ é�Ì�ì Í)U ÌPÅjÄ"M Í ìãáQÇ¢Ì�ÅWá�Ï ÍÓ Í è Í ÏbÌQM8O)M6ÌOìÕì�áPÇ Í Ï�Ï�á�Ï Ð O�á�Ï�Ï Í O�ÐÕê6è9Ó¦O�ágé Í ì�à}ÌOì Í é?�Õê6é Í ÌQMnì@�vê6èÕO�áPÅjÅ"Ô9Ð�Ì�Ð�ê×ï Í ÏÕê6è9ÓOì^é4ß Í ìÒÐ�Ì�ÏÒЭà�È�Ï Í O�ÌPMNM6ê6è9ÓìÕáPÅ Í áQÇ¢ÐÕØ Í ×ÒÌ�ÏÕÓOá�èoé

S ó�O�áPÅjÅ"ÔQÐbÌ�Ð�ê×ï Í ÏÕê6è9Ó)Aÿê6ìãÌ è ���`�-�/»Pº�·Q´ ² ��¶�·����WêNÇ�êqÐ�éQá Í ìÑè9á�Ð�O�á�è�Ð�Ì�ê×è�Ì�è�È�Æ Í Ï�á"éQê6ïgê6ìÕá�Ïbì î ê/é Í é î ÐÕØ Í Ï ÍéQáWè9á Ð Í¡U ênìÖÐ�è}á�è Ð Æ Í ÏÕá Í M Í Å Í è�Ðbì î d ñ�± A ìÒÔ`ObØvÐÕØ|Ì�Ð î à ñãõÖ� éS ó�èS� ² ��·�´CB�ê×è�Ì�Ï�ê×è}ÓDA~ênìMÌ�ìÕÔ9à}ì Í Ð�áQÇEA O)M×á�ì Í é�Ô9è}é Í Ï­Ì�é9éQê×ÐÕê6á�è�Ì è}éúÓ Í è Í ÏbÌQMEÅ"Ô"M×ÐÕê�Ä"M6ê�OVÌ�Ð�ê×áOèwó�à�ÈÌ è�È Í M Í Å Í è�Ð�ê6èFA ô î ê/é Í é î Ç�áOÏ�Ì è�È î d ñ�± B�Ì è}é #�± A î ê×Ð�ê6ì�ÐÕØ Í O�ÌOì Í Ð�Ø}Ì�Ð î   ñ d îG#�± BFé

ë T�Ð ë � T

Page 124: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

HÖé Í ÌQMnìÑê6è�O�áPÅjÅ"Ô9Ð�Ì�Ð�ê×ï Í Ï�ê6è9ÓOìãÌ Ï Í è9ê~O Í áOà× Í O Ð�ìÑÐÕá K áOÏ�Ü K ê×ÐÕØoé3�¢ê6Ï�ìÒÐ î Ð�Ø Í ÈVOVÌQÄQÐ�Ô9Ï Í Ð�Ø Í ��ÅWágé9Ô"M×áG�¨á�Ä Í Ï�Ì ÐÐÕê6á�è óXÌ�ì�Ç�á�ÏÅWÌPM×ê�Æ Í é�ê×è�ÐÕØ Í è Í¡U ÐMé Í R}è9ê×ÐÕê6á�è ô é�ÓZØ Í O�áPM�M Í O�Ð�ê×áOè�áQÇ;êné Í ÌPM6ì�ê6èúÌ�Ï�ê6è9Ó�ênì�ê6èOÐ Í Ï Í ìÒÐÕê6è9Ó�Ð�á�ìÖÐ�Ô}éÈìÕê×è`O Í ÐÕØ Í ÈvÌ Ï Í O¡M6áOì Í évÔ9è}é Í Ï�ìÒá�Å Í è|Ì�ÐÕÔ}Ï�ÌPM;ó^Ì è|é�ìÕáPÅ Í ì�M×ê6Ó�Ø�Ð�M�ÈVO�á�è`O�á�O Ð Í é ô áPÄ Í ÏbÌ�ÐÕê6á�è|ì[éS Ý Í Ð�B4à Í Ì è�êné Í ÌQM1áQÇ,Ì"ÏÕê6è9ÓIAyé8ÓZØ Í O áOì Í Ðbì?áPÇ�ÐÕØ Í Ì�é}éQêqÐ�ê×ï Í ìÕÔ9à9ÓOÏÕáOÔ"Ä�áQÇJB � áPÇJA � Ì Ï Í ÐÕØ Í ìÕÔ9à}ì Í Ð�ìî  FB d îj± AyéuÓZØ Í ì Í Ð?áQÇBO�áOì Í Ð�ì,A � B�Ç�áOÏ�Å�ì;Ì­ÓOÏÕáOÔ"Ä K êqÐ�Ø�Ì­Ï�ê×è}Ó¨ìÖÐ�ÏÕÔ`O ÐÕÔ9Ï Í ê6è9Ø Í ÏÕê×Ð Í é�Ç�ÏÕá�ÅKAyéuÓZØ9ê6ìÏÕê6è9Ó4ê6ì�Ügè9á K è�Ì�ìãÐ�Ø Í ��p`���/�s�¡�]�xº�����»­áQÇLA¸á�ï Í ÏÑÐ�Ø Í êné Í ÌPM2BFé

ÓZØ Í�Ø Ô}á ÐÕê Í è�ÐMÏÕê6è9ÓMA � B�áQÇ?Ì�Ï�ê6è9ÓDA á�ï Í Ï�Ì è�êné Í ÌQMNB¦Ç�áOÏ�Å�ì�Ð�Ø Í à|Ì�ìÕê6ì�áQÇ?̦ÅWáQéQÔ"MnÌ ÏJÏ Í éQÔ`O ÐÕê6á�èoé�ÓZØ}ê6ìJê6ìÐÕØ Í Ï Í éQÔ]O�ÐÕê6á�è�ÐÕØ}Ì Ð�Å�ÌQÄ|ìÑÌ�è Í M Í Å Í è�Р A ÐÕá¨Ð�Ø Í O áOì Í Ð î  OBIé3ê�á KãÍ ï Í Ï î KÑÍ ó Í ì�Ä Í O ênÌQM�M�ÈWÐÕØ Í O áPÅjÄ9Ô9Ð Í ÏìO ê Í è�ÐÕênìÖÐbì�ÌQÅWá�è9Ó�Ô}ì ô Ì Ï Í Ô}ì Í é�ÐÕá�ÐÕØ}ê×è"Ügê6è9Ó�Ì à1á�ÔQÐTÅWáQéQÔ"MnÌ Ï­Ï Í éQÔ`O ÐÕê6á�è}ìMê6è�ì�M6ê×ÓOØOÐMNÈ�é9ê�� Í Ï Í è�Ð�M6Ì�è9Ó�Ô|Ì Ó Í é�¢ê×ÏbìÒÐ î ÓOê×ï Í è�Ì è�ê6é Í ÌQMEB î KÑÍ Ô}ìÕÔ}ÌQM�M�ÈLÄ9ê~O�ÜúÌ�ì Í Ð)PRQSAâáQÇZÏ Í Ä9Ï Í ì Í è�Ð�Ì�Ð�ê×ï Í ì�Ç�á�Ï�Ð�Ø Í¦Ø Ô9á Ð�ê Í è�ШÏÕê6è9ÓFA � B îê/é Í é î Ç�á�Ï Í ï Í ÏÈ îq± A î ÐÕØ Í Ï Í�Í¡U ênìÖÐbì Í)U Ì�O�ÐMNÈ�á�è Í ñ%± PBìÕÔ`ObØ�Ð�Ø}Ì�Ð ñ?±kî  TBFéT°�á�Ð Í ÐÕØ}Ì ÐJÐ�Ø Í áOè Í Ð ÐÕá Ð áOè ÍO áOÏÕÏ Í ì�Ä1á�è}é Í è`O Í à Í Ð KãÍ�Í èA � B�Ì�è}éPÛÓ�ê6ï Í ìZÌ�Ï�ê6è9Ó�ìÖÐ�ÏÕÔ`O ÐÕÔ9Ï Í ÐÕáMP$é3ê�Ì ïgê6è9Ó�Ä9ê�O�Ü Í é�ìÒÔ]ObØ�Ì�ì Í Ð î KÑÍ Ô}ì Í Ìì�M×ê6Ó�Ø�Ð�M�È�éQê�� Í Ï Í è�Ð�è9á ÐbÌ�Ð�ê×áOè î ó$ÅWáQéUB ô î á�Ït×ÖÔ}ìÖÐ î ó$B ô î ÐÕá�é Í è9á�Ð Í ÐÕØ Í4Í M Í Å Í è�Ð ñ?± PBìÒÔ`ObØ�ÐÕØ}Ì Ð ñ%±¼î  TBFéH$Ç;B�ê6ìMÐ�Ø Í êné Í ÌPM�Ó Í è Í ÏbÌ�Ð Í éaà�ÈaÌ�ìÕê6è9ÓPM ÍWÍ M Í Å Í è�ÐRá ± A ó^ê?é Í é î B õ ÉFá #¨Ê# ± A�Î ô î ÐÕØ Í è�ÐÕØ9ênì­ÓOê×ï Í ìMÐÕØ ÍÇ^ÌQÅWê�M×ênÌ Ï¨ó5ÅWágé�á ô áPÄ Í ÏbÌ�Ð�ê×áOèoéÓZØ Í ObØ}á�ê~O Í áQÇ�Ï Í Ä9Ï Í�Í ì Í è�Ð�Ì�Ð�ê×ï Í ì­éQá Í ì­è9á Ð4ÌQM×Ð Í Ï¨ÐÕØ Í ÌQM6Ó Í à}Ï�Ì�Ô9è}é Í Ï�è Í Ì ÐÕØoéªÏgá KãͦK ê�MNMÑáQÇ=Ð Í è{M Í Ì ï Í Ð�Ø9ê6ìObØ9áOê�O Í Ô9è}ì�Ä Í O êNR Í éoégê�á KÑÍ ï Í Ï�Ï Í Ä9Ï Í ì Í è�Ð�Ì�Ð�ê×áOè}ì�Ì�Ï Í ÌPM K Ì1ÈQì�ê�Å�Ä1á�ÏÕÐ�Ì�è�Ð�ÐÕá�_���¶��1p�-·��/�s���FéWV�è`M Í ìÕì KÑÍ R U Ìì Í ÐXP Ì è}é�Ï Í Ä9Ï Í ì Í è�ÐbÌ�ÐÕê6á�è|ìÑáPÇ Í M Í Å Í è�Ð�ì�ê6èYP î O�áPÅjÄ9ÔQÐbÌ�ÐÕê6á�è|ÌQM�ÌOì5Ä Í O Ð�ì�O�Ì�èÕ�[����à Í O)M6Ì�ÏÕêNR Í é�é;ß Í è9á K ÓOáá�èvÐÕá�á�ÐÕØ Í Ï�Ä9Ï�áPÄ Í ÏÕÐÕê Í ìãáQÇkê6é Í ÌQMnì^éÜT_ -Zc- � � - �@-83Öz�B|�z�� Æ��¡�CBq·�� ²\[ ×�g� ² ��·�´@���½¼T·%º�����»XAjà � ¹"�)�&��¹`�¡��ºãìÒÔ"Å Ú ² �)�[�Q�$� ² Bx  [ Ú ê6è�Ð Í Ïbì Í O�Ð�ê×áOè Ú² �)�[�Q�$� ² BW] [ Ú ·Q� ² �[º� ² p}_¡� Ú ² �¡�:���-� ² B [ ·Q� ²�² �^�x�[� ² �$�­×��WB [ õ É ßÖn î n ñ n Ê�î n ± B d ñ n ± [ Î Ú ·Qº���·�´��¡�� ² ��·Q´@���½¼�A�Ãó�C�ôDC�ôXC ^Oý�øBû�II_&ü"ü`ý3ü�`�h¨ý3ü"ü"ø�i8a"ö�÷�ÿ~h ý�ý�ømùß Í è9á K é Í ì�O�ÏÕê6à Í Ø}á K ÐÕØ Í M6Ì�è9Ó�Ô}Ì�Ó Í áQÇkê6é Í ÌQMnì�O�Ì�èvà Í Ô}ì Í é�ÐÕá�é Í R}è Í­Í ÏÕÏ�á�Ï Ð O�á�Ï�Ï Í O�Ð�ê×è9Ó?O�áQé Í ì^é/^X �N3�� - ��-b3�z�B|�z}�³ ��êné Í ÌPM Í Ï�ÏÕáOÏ Ð O áOÏÕÏ Í O ÐÕê6è9Ó¦O áQé Í Rà�~�?»Q�����)� ×)µ�·Q�y���`�-�$»Qº·�´ ² ��¶�·����YA Ú ·^�)����p`�¡��_��½¼^ � ² ��·�´��FB Ï dba)a)a�d B c QcAed½·Q� ² ·���)�y_¡�s·Q�$� ² �¡�)���Õ�½¼¨º��-�[º���)�)�`�-·��/���1�¡�FP Ï d)aba)a�d P cGf Ú ·�� ² ·ÕÅ Í ì�ìÕÌ�Ó Íì�Ä}ÌPO ÍMg QSA�à � ¹"��_�·��:���`�^_�·Q´t�¡��_�� ² ����»�¼bp�1_)���s�Q��¼¡��º"Rà¶�·�[�j�¢¹"�¦¶j�¡���)·)»���� ± g �-�&�¢¹"�j�)����p`�¡��_�í ��ó$B Ï ô d)a)abaBd ��ó$B c ô ï Ãh á�Å Í áQÇkÐÕØ Í Ä9Ï Í ïgê×áOÔ}ì�ObØ9áOê�O Í áQÇ�è9á ÐbÌ�Ð�ê×áOè�ÅWÌ1Èvà Í O á�Å Í O¡M Í Ì Ï Í Ï�è}á K wEV�ìÕÔ}ÌPMNM�ÈFP Ï õ à�à�à õ P c õ P Ì�è}éÐÕØ Í è�Ð�Ø Í O�ágé Í Å�ÌQÄ}ì g ÐÕá9P c égßãÔQÐJênì�á�ÐÕØ Í Ï�O�ÌOì Í ìXP n = ì�Å�Ì1Èvà Í éQêi� Í Ï Í è�Ð4óXÌ�ì�ê6è�Ð�Ø Í OVÌ�ì Í áQÇ�Ð�Ø Í ì L ÓO áQé Í ô é&�9áOÏ?Ä9ÏbÌPO�Ð�ê�OVÌQM�Ô}ì�Ì Ó Í P n = ì­à Í ÐÒÐ Í Ï�à Í R|è9êqÐ Í é&ê�á KãÍ ï Í Ï�ÐÕØ Í Å�Ì�ÐÕØ Í Å�Ì�Ð�ê�OVì¨éQá Í ì­è}á Ð Í èÇ�á�Ï�O Í ìÕÔ`ObØÌ�Ï Í ìÒÐÕÏ�ê~O�ÐÕê6á�è�é�ß Í è9á K ì ÍVÍ Ø9á K¸L�ÍVÍ é Ð h á�M×á�Å4áOèqO áQé Í ì�Ì è|é¼ì L ÓÑO áQé Í ìMÌ Ï Í à1á Ð�Øúì5Ä Í O�ê6ÌPMEOVÌ�ì Í ì�áPÇ;ê6é Í ÌQMÍ Ï�Ï�á�Ï Ð O�á�Ï�Ï Í O�ÐÕê6è9Ó%O�áQé Í ì^é

ë�é¡ìÑØ9ê×è Í ì ÍWL�Í Å�Ì ê6è}é Í ÏBìÑágé Í ì^éjÓZØ}ê6ì?O�á�Ï�Ï Í ì5Ä1á�è|é9ì�Ð�ájA õR� î B Ï õ á:Ï � d)a)aba�d B c õ á c � î Ì è}é g õÉ � d ë dba)a)a[d èlkn�Ô Ï á n ÷ ëQÎ2é�ÓZØ Í Ï Í Ä9Ï Í ì Í è�Ð�Ì ÐÕê6ï Í ì Í ÐWP n Ï Í Ä9Ï Í ì Í è�ÐÕê6è9Ó � � á n � ênì�Ð�Ø Í è}Ì ÐÕÔ9ÏbÌQM�á�è Í î ê/é Í é îP n õ6� f ê õ É � dba)a)a:d á n ÷ ëQÎ2é� é L�Í�Í é Ð h áPM6áPÅWá�è<ìÑáQé Í ì[é8ÓZØ9ênì�O áOÏÕÏ Í ì�Ä|áOè}é9ì?ÐÕámA õ e}� Ì r"Í î B Ï õ ó¢r ÷ � Ï ô d)a)abaBd B c õ ó¢r ÷ � c ô K Ø Í Ï Í� Ï d)a)aba�d � c Ì�Ï Í Ð�Ø Í éQênìÒÐÕê6è`O�Ð Í M Í Å Í è�Ð�ì�áQÇãe � ÐÕØ|Ì�Ð KãÍ Ä}ê�O�Ü�Ð�á Í ï�ÌQM6Ô}Ì�Ð Í ÐÕØ Í Ä1áPM�Ègè9áPÅWênÌQM/é g ê6ì

ë T�Ð ë � v

Page 125: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ÐÕØ Í ì Í Ð­áQÇxÄ1áPM�Ègè9áPÅWênÌQMnì�ê6èlA~áPÇÑé Í Ó�Ï Í�Í M Í ìÕìJÐÕØ|Ì è � é%ÓZØ Í ObØ9á�ê~O Í áQÇ?Ï Í Ä}Ï Í ì Í èOÐbÌ�Ð�ê×ï Í ì�ênì­Ì Ó�Ì ê6è�ÐÕØ Íè}Ì�Ð�Ô9Ï�ÌPM�á�è Í�K ê×ÐÕØYP Ï õ à�à�à õ P c õ e|� î K Ø Í Ï Í e}��ìÖÐbÌ è}é}ì�Ç�á�Ï�Ð�Ø Í ì Í Ð�áPÇké Í Ó�Ï Í�Í Æ Í ÏÕájÄ1áPM�Ègè9áPÅWênÌQMnìê×èAyéHùè�Ð�Ø Í è Í¡U Ð�M Í O ÐÕÔ9Ï Í�KãÍ�K ê�M�M�ì Í�Í Ø9á K ÐÕá�M×êNÇ=ÐZá�Ô9ÏZé Í O�áQéQê×è}Ó�ÌQM6Ó�áOÏÕê×ÐÕØ`Å�óXì ô Ì è}é�ÐÕØ Í èvì�Ä Í O ênÌQM6êNÆ Í ÐÕØ Í Å~ÐÕá�Ó Í ÐÌWé Í O�áQéQê×è}ÓWÌPM×ÓOá�Ï�êqÐ�Ø"Å Ç�áOÏZÐÕØ Í ì L Ó�O áQé Í é£ V¤�¥� ���"!�¦¨§�©��� ���­�k���ÓZØ Í áPÄ9ÐÕê�Å4ê�Æ Í éúï Í ÏbìÒê6á�èaáQÇÑÐÕØ Í�L�ÍVÍ é Ð h áPM6áPÅWáOèaé Í O áQéQê6è9Ó�ÌQM6Ó�á�Ï�ê×ÐÕØ"Å Ð�Ø}Ì�Ð K á�ÏÜ Í é�ê�ÇãÐÕØ Í Ì�Ó�Ï Í�Í Å Í èOÐTÄ}Ì ÐÏbÌQÅ Í Ð Í Ïx� ç � � � �ênìxÇ�Ï�áPÅ Ì ë �on Í/éió�O�Ì�Ï Í Ç�Ô"M1Ì�è}ÌQM�ÈQìÒênì;áPÇ.ÐÕØ}ê6ìãÌQM6Ó�áOÏÕê×ÐÕØ"ÅÞÇ�áOÏ Í ï Í ÏÈjObØ9á�ê~O Í áQÇ�ÏbÌ�Ð Í ê6ìãÓOê×ï Í èê6è Ì ë�ë � Í/é3ÓZØ Í êNÅjÄ9Ï�á�ï Í é�ÌQM6Ó�áOÏÕê×ÐÕØ`Å K áOÏ�Ügê6è9Ó4ê�Çu� ç � � úênì�éQÔ Í Ð�á ! Ô9Ï�Ô}ì K ÌQÅWê.Ì�è}é h Ô}é9Ì è Ì v�( Í]éìÑØ9ê6è Í ì Í Ï Í Å�Ì ê6è}é Í Ï�O áQé Í ìZØ|Ì ï Í à ÍVÍ è�ìÒÐÕÔ}é9ê Í éVÇ�áOÏ�ÌjM×áOè9Ó4ÐÕê�Å Í è9á K é í Ì�Ï�M�ȦÄ}ÌPÄ Í Ï�ìZáOè�ÐÕØ9ênì�O áQé Í ê6è`O)M×Ô}é ÍÐÕØ}áOì Í áQÇ�óJì5Å�ÔQÐÕØ�Ì�è}é�ß�M×ágá�Å Ì n Í�Ì è}éWß�Ì�ÐbìÒáOè Ì ë � ë�Í]é í ï Í è�ìÕáPÅ Í à1á�á�ÜQì;Ø}Ì ï Í à ÍVÍ è K Ï�êqÐÕÐ Í è�á�èWÐ�Ø9ê6ì?ÐÕá�Ä9ê~Oó^ì Í�Íqp Ï�ênìÒØ9è|Ì Í Ð"ÌQM/é Ì dQv�ÍÑÌ�è}é h áQé Í ÏbìÒÐÕÏbÌ è}é Í Ð�ÌPM?é Ì ë � )bÍ ô é L�Í Ç Í Ï Í è`O Í ìTÇ�áOϨé Í O�ágé9ê×è9Ó�ÌPM×ÓOá�Ï�êqÐ�Ø"Å�ì�Ç�á�Ï­Ð�Ø9ê6ìO áQé Í ê×è`O)M×Ô|é Í Ì )�d îgT n î �P� î v�v�Í/ékß Í�K ê�MNM1éQênì�O�Ô}ìÕì;ÐÕØ Í ê×Ï�O áOè�ÐÕÏ�ê×à9Ô9ÐÕê6á�è}ì�ê6è�Ç�Ô9ÏÕÐÕØ Í ÏZé Í ÐbÌ ê�M}ê6è�ÐÕØ Í è Í¡U ÐxM Í O ÐÕÔ9Ï Í é�9áOÏ�è9á K î KãÍ Å Í èOÐ�ê×áOè�ÐÕØ}Ì Ð�ÐÕØ Í Ç�áOÏ�Å�ÌQM6ê�ÆVÌ�Ð�ê×áOè�áPÇ �Òêné Í ÌQM Í Ï�Ï�á�Ï Ð O�á�Ï�Ï Í O�ÐÕê6è9Ó%O�áQé Í ì<�4ê6ì�Ç�Ï�áPÅ Ì vPvQÍ/é

ë T�Ð ë � (

Page 126: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

¯ °²±´³«µ�¶¸· ¹sr

t |nm|uYûOu�0^+n- _ � - ZE\v� 1v¼ 3 -)_ -2� ½�1w- ��-b3 - - l -J���43,+Õ�?Z X - _yx °�á�ï Í Å�à Í Ï�( î � ��� ë¾�¿,À�Á1Â�Ã9¿�Ä2zÆm�b_)�Xpº�¡º�Ç�Èq· ² ¹Qp�r|p ² ·�� r�_)º��@×�yÇ�{�·Q�`�s�)´8|�º�� ² ·

Ó,áPÄ9ê~O�ì�Ç�áOÏZÐÕáQé9Ì1È:wS HÖé Í ÌPMBO áQé Í ìS ó�à}ìÒÐÕÏbÌPO Ð�M6ênìÖÐ Ð é Í O áQéQê6è9ÓS p Í O áQéQê6è9ÓWáQÇÍì L Ó�O áQé Í ì

��}���� ~�����¦¨¥v�B!�!��"!,Ü2�~�"!�!����ã��������´�������� Í Ð�Ô}ìZÏ Í O�ÌPMNM�Ð�Ø Í Ç�áPM�M6á K ê×è9ÓWé Í R}è9ê×ÐÕê6á�è�áQÇ�Ì è�ê6é Í ÌQM Í Ï�ÏÕáOÏ Ð O áOÏÕÏ Í O ÐÕê6è9Ó?O áQé Í Ç�Ï�áPÅåÐ�Ø Í MnÌ�ìÒÐ�M Í O ÐÕÔ9Ï Í é/^X �N3�� - ��-b3�z��m|�z�³ ��êné Í ÌPM Í Ï�ÏÕáOÏ Ð O áOÏÕÏ Í O ÐÕê6è9Ó�O áQé Í R �~��»Q�����)�?�¡µ{·������`�-�$»Qº·�´ ² �Q¶j·Q����AI�?· �)����p`�¡��_��½¼^ � ² ��·�´��FB Ï dba)a)a�d B c QcAed½·Q� ² ·���)�y_¡�s·Q�$� ² �¡�)���Õ�½¼¨º��-�[º���)�)�`�-·��/���1�¡�FP�Ï d)aba)a�d P c f ��·�� ² ·ÕÅ Í ì�ìÕÌ�Ó Íì�Ä}ÌPO ÍMg QSA�à � ¹"��_�·��:���`�^_�·Q´t�¡��_�� ² ����»�¼bp�1_)���s�Q��¼¡��º"Rà¶�·�[�j�¢¹"�¦¶j�¡���)·)»���� ± g �-�&�¢¹"�j�)����p`�¡��_�í ��ó$B Ï ô d)a)abaBd ��ó$B c ô ï Ãß Í�K ê�MNMZìÕØ9á K ÐÕá�Ì à}ìÒÐÕÏbÌPO Ð"ÐÕØ Í M6ê6ìÒÐ Ð é Í O�áQéQê×è}ÓaÌQM6Ó�áOÏÕê×ÐÕØ`ÅàÇ�áOÏ L�ÍVÍ é Ð h á�M×á�Å4áOèSO áQé Í ì"ê6è\Ð�Ø9ê6ì�Ç�ÏbÌQÅ Í)K á�ÏÜ îÌ è|é�Ð�Ø Í è�ÌPÄ"Ä"M�È�ê×Ð�ÐÕáWÐ�Ø Í ì L Ó§O áQé Í ì[éx�¢ê6Ï�ìÒÐ�M Í Ðbì�Ï Í O�ÌPMNM.Ø}á K L�ÍVÍ é Ð h áPM6áPÅWáOè�Ì�è}éªì L Ó�O�ágé Í ì�R9ÐJê×è�Ð�Ø9ê6ìÇ�ÏbÌQÅ Í)K á�ÏÜ éú�øBø�ý;`���ýÑI½ý?KÞýx÷ i:ý�ý�ømùß Í ìÕÌ K Ø9á K Ð�á Í)U Ä9Ï Í ìÕì L�ÍVÍ é Ð h á�M×á�Å4áOè^O�áQé Í ìZê6è�ÐÕØ9ênì�Ç�ÏbÌQÅ Í)K á�ÏÜ:w

S ÓZØ Í ÏÕê6è9Ó�A õ e � Ì r"Í]é

ëbv Ð ë � d

Page 127: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

S ÓZØ Í ê6é Í ÌQMnìmB Ï dba)aba�d B c à Í ê×è}Ó�ÓOê×ï Í èwà�È�B n õ ó¢r ÷ � n ô î K Ø Í Ï Í ó¢r ÷ � n ô Ï Í Ä}Ï Í ì Í èOÐbì�ÐÕØ Í êné Í ÌPM�áQÇÄ|á�MNÈgè9á�Å4ênÌQMnìãÐÕØ|Ì�ÐJÌ�Ï Í Å"Ô`MqÐ�êNÄ"M Í ì�áQÇ8r ÷ � n î ê/é Í é î ó¢r ÷ � n ôÑõ É<�,ósr ôN� ó¢r ÷ � n ô�Ê �,ósr ô�± e|� Ì r"Í/Î�étÓZØ ÍØ Ô}á ÐÕê Í è�Ð�Ï�ê×è9Ó�A � B nJ�õ e|� K Ø Í Ï Í Ð�Ø Í Ï Í Ä9Ï Í ì Í è�Ð�Ì ÐÕê6ï Í ìãÌ Ï Í ÐÕØ Í ì Í Ð�áPÇ�Ä1áPM�Ègè9áPÅWênÌQMnìZáQÇ¢é Í Ó�Ï Í�Í Æ Í Ï�áFéS ÓZØ Í Å Í ìÕì�Ì Ó Í ì�Ä}Ì�O Í�g Q�A¸ênìãÐÕØ Í ì Í Ð�áPÇEÄ1áPM�Ègè9áPÅWênÌQMnìãáQÇ�é Í ÓOÏ ÍVÍ M Í ì�ìãÐÕØ}Ì�è � é

ÓZØ Í Ë ÐÕØ O�ágá�ÏbéQê×è|Ì�Ð Í áQÇ;Ð�Ø ÍWÍ è`O�áQéQê×è}Ó�áQÇãÌVÅ Í ì�ì�Ì Ó Í Ä|á�MNÈgè9á�ÅWê6ÌPM�� ênì�Ð�Ø Í Ô9è9ê Ø Ô Í Ä1áPM�Ègè9áPÅWênÌQM�� n ó¢r ô áQÇé Í Ó�Ï Í�Í Æ Í ÏÕá�Ð�Ø}Ì�Ð"ênì?O�á�è�Ð�Ì�ê×è Í é�ê×è�Ð�Ø Í O á�ì Í Ð���ósr ô  §É@�,ósr ôE� ósr ÷ � n ô�Ê � n ± e|��Î î K Ø9ê~ObØ�ÐÕÔ9Ï�è}ì"á�ÔQЭÐ�áà Í Ð�Ø Í O áOè}ìÖÐbÌ è�ÐE��ó � n ô é3ÓZØgÔ}ìÑÐÕØ9ênì�é Í R}è9ê×ÐÕê6á�è�ê6ì�O áOè}ìÕê6ìÒÐ Í èOÐ K ê×ÐÕØ�á�Ô9ÏZÔ}ìÕÔ}ÌQM�é Í R}è9ê×ÐÕê6á�è�áQÇ L�Í�Í é Ð h á�M×á�ÅWá�èO áQé Í ì[éh ú�æ h ý�ý�ømùHùè�ÐÕØ Í OVÌ�ì Í áPÇ,Ð�Ø Í ì L Ó�O�áQé Í ì KãÍ Ø}Ì ï Í w

S A¸ê6ìT�¢¹"��ê×è�Ð Í Ó�ÏbÌQM.éQá�Å�Ì ê6è î ê?é Í é î Ð�Ø Í ê×è�Ð Í Ó Í Ï�ì^éS BbÏ dba)a)amd B c Ì Ï Í Ð�Ø Í êné Í ÌPM6ì���Ï � dba)a)a�d � c � K Ø Í Ï Í �:Ï dba)aba�d � c Ì Ï Í �Ï Í MnÌ�ÐÕê6ï Í MNÈ�Ä}ÏÕê�Å Í ê6è�Ð Í Ó Í Ïbì î K êqÐ�ØP n à Í ê×è9Ó � f ê ÐÕØ Í ì Í Ð�áPÇ,è9áOè Ð è Í Ó�Ì�ÐÕê6ï Í ê6èOÐ Í Ó Í ÏbìZáQÇ,ï�ÌPM×Ô Í M Í ì�ìãÐÕØ|Ì èm� n éS ÓZØ Í Å Í ìÕì�Ì Ó Í ì�Ä}Ì�O Íqg Q � î ê6ìMÐ�Ø Í ì Í Ð g õ É � d ë d)a�a�aNd<�$÷ ëPÎ�ó K Ø Í Ï Í Ç�á�Ï?O�á�ègï Í è9ê Í è`O Í�KãÍ Ä}ê�O�Ü� õ è knNÔ Ï � n ô é: è`O Í Ì�ÓOÌ�ê×è�Ì�Å Í ìÕì�Ì Ó Í � ±9� � ê6ì�Å�ÌPÄ"Ä Í évÐÕá4ÐÕØ Í ï Í O ÐÕá�Ï í � ó½ÅWáQé�� Ï ô dba)a)amd �«ó½ÅWáQé�� c ô ï é

��ö���ø�û8÷Jý$ý�ö5ùoaû8÷�i:ø�ý;j�öÕý�øBû�I�øBü"ü`ý3ü�` i:ýxü"ü"ø�i8a"ö5÷�ÿ i:ý�ý�ømùßäØ9ê�M Í ÐÕØ Í Ì à|ìÖÐ�Ï�Ì�O�ÐÕê6á�è�ìÕá�Ç^Ì�ÏJé Í ì�O�ÏÕê6à Í ì�Ø}á K Ð�á�O�á�è}ìÒÐÕÏ�Ô`O�Ð�ÐÕØ Í ê6é Í ÌQM Í Ï�ÏÕáOÏ Ð O áOÏÕÏ Í O ÐÕê6è9ÓjO áQé Í ì î êqÐ�éQá Í ìÕè2= ÐìÕØ Í é¨M6ê×ÓOØOЭáOèaÐ�Ø Í ÅWê×è}êNÅ�Ô"Å&é9ê6ìÒÐ�Ì�è`O Í áQÇãÐÕØ Í O áQé Í ì%O á�è|ìÖÐ�ÏÕÔ`O Ð Í é�Ð�Ø9ê6ì K Ì1È�éjê Í Ï Í�KÑÍ ÓOê×ï Í Ì�è�ê×èÇ�áOÏ�Å�ÌPMéQênì�O�Ô}ì�ìÒê6á�è4áQÇ.ÌMè9á Ð�ê×áOè4ÐÕØ}Ì Ð?ê6ì;Ô}ì Í é�ÐÕá�Ä9Ï�á�ï Í éQênìÖÐbÌ è`O Í Ä9Ï�áPÄ Í ÏÕÐÕê Í ì�ó^ÌOì;ÌQMnìÕá�ì�Ä Í O êNÇ¢È�é Í O áQéQê6è9Ó¨ÌPM×ÓOá�Ï�êqÐ�Ø"Å�ì ô éÓ,á"Ì Ï�Ó�Ô Í Ì à1á�ÔQÐÑé9ê6ìÒÐ�Ì�è`O Í Ä9ÏÕá�Ä Í ÏÒÐ�ê Í ì î KÑÍ Ì�ì�ìÒáO ênÌ�Ð Í�K ê×ÐÕØ Í M Í Å Í è�Ð�ì;áPÇ�ÐÕØ Í ÏÕê6è9Ó î ÌF��ìÒê�Æ Í �Qé í é ÓFé,ÐÕØ Í ìÒê�Æ Í áQÇÌ èWê6è�Ð Í Ó Í Ï K ê�M�M|ìÕêNÅjÄ"M�È�à Í ê×Ð�ìÑÌ à}ìÕáPM6ÔQÐ Í ï�ÌPM×Ô Í *�Ð�Ø Í ìÕêNÆ Í áQÇ.ÌTÄ1áPM�È�è}áPÅWê6ÌPM9áQÇ.é Í Ó�Ï Í�Í�� á�ï Í Ïke|� K ê�MNM|à Í Û k � Ï îÍ Ð�OYé�Hùè�Ó Í è Í ÏbÌQM¢Ð�Ø Í ìÒê�Æ Í Ç�Ô9è]O�ÐÕê6á�èÕÅ�Ô}ìÖÐ"ì�Ì�Ð�ê6ì5Ç¢ÈúìÕáPÅ Í Ì U ê6áPÅ�ì�ìÒÔ`ObØ�Ì�ì­ìÕê�Æ Í ó î   ñ ô ¥ ìÕêNÆ Í ó îgô  `ìÕê�Æ Í ó ñ ô *Ì è|é�ìÕê�Æ Í ó î�ñ�ô¨õ ìÒê�Æ Í ó îQô ìÕê�Æ Í ó ñ ô Í Ð�OYé^ê Í Ï Í�KãÍ�K á�èJ= ШÓOá�á�ï Í ÏMÐÕØ}ê6ì�O á�è]O Í Ä9ШÏÕê6Ó�áOÏÕáOÔ}ì5M�Èvz'ÐÕØ}á�Ô9ÓOØ�ê×Ð%O�Ì�èà Í éQáOè Í Ì vPvQÍ]é�Hùè}ìÒÐ Í Ì�é KãÍ?K ê�MNMEÜ ÍVÍ Ä�ÐÕØ}ê6ì�Ä9Ï�áPÄ Í ÏÕнÈvê6èqÅWê×è|é�M×ágá�ì Í MNÈ�Ì è}é�à Í O�áPÅ Í Ä}Ï Í O ênì Í ê6è�ÐÕØ Í O�ÌOì Í áQÇL�ÍVÍ é Ð h áPM6áPÅWáOè&O�áQé Í ìJÌ è}é�ì L Ó§O áQé Í ì[é;Hùè�Ð�Ø Í Ï�ê×ÓOá�Ï�á�Ô}ì�OVÌ�ì Í î áOè Í ÌPM6ìÕá�Ì�ì�ìÒáO�ê6Ì Ð Í ì�Ì�ìÒê�Æ Í?K ê×ÐÕØúê6é Í ÌQMnì�ê6èA»z Ð�Ø Í ìÕêNÆ Í áPÇLBvà Í ê6è9Ó�Ð�Ø Í ìÕêNÆ Í áQÇ�Ð�Ø Í ì�Å�ÌQM�M Í ìÖÐJè9á�è Ð Æ Í ÏÕá Í M Í Å Í è�ÐJê6èOBIé�H$Ç;ÐÕØ Í ìÕêNÆ Í áQÇ�Ð�Ø Í êné Í ÌPM,ÌPM6ìÕáì�Ì�ÐÕênì5R Í ì�ìÕáPÅ Í ìÒê�Æ Í Ì U ê6áPÅ�ì î ÐÕØ Í è&Å4ê6è9ê�Å"Ô"Å�éQênìÖÐbÌ è`O Í áPÇ,Ð�Ø Í O áQé Í OVÌ è�à Í­Í ìÖÐbÌ à"M6ênìÒØ Í é¦Ç�áOÏ�Å�ÌPMNM�Èsé��}��b� ' ¤����¢!�¦­�ã������ ��©��«#$�����vÜ.%��4¥ ��(û��� ���������������¦¨¥ ���"!;b��©�(ß Í ìÖÐbÌ ÏÕÐkà�È�Ï Í O�ÌQM�M6ê×è9ÓJÐÕØ Í ó�R}ÏbìÒÐ ô M6ê6ìÒÐ Ð é Í O�áQéQê×è}Ó�ÌPM×ÓOá�Ï�êqÐ�Ø"ÅÑÇ�áOÏ;é Í O�ágé9ê×è9Ó L�ÍVÍ é Ð h á�M×á�Å4áOè�O�áQé Í ì�Ì�è}éWì5M6á K MNÈÐÕÏbÌ è|ì5MnÌ�Ð�ê×è9Ó�ê×Ð"ìÒá�ê×Ð"ìÕá�Ô9è}é}ì�M×ê�Ü Í Ì�Ó Í è Í ÏÕê~OWé Í O�ágé9ê×è9Ó�ÌPM×ÓOá�Ï�êqÐ�Ø"ÅþÇ�áOÏ­ê6é Í ÌQM Í ÏÕÏ�á�Ï�O�á�Ï�Ï Í O�ÐÕê6è9Ó&O áQé Í ì[éVÓZØ ÍÐ�Ì�à"M Í à Í M×á K ê6ìZà Í ìÒÐ�Ï Í Ì�évÏÕá K Ð à�È Ð Ï�á K é

ëbv Ð ë � )

Page 128: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

L�h é Í O�áQé Í Ï ó�à}ìÒÐÕÏbÌPO ÐÕê6á�è� ��� X 3,5 � Ï d)aba)a�d � c BbÏ d)a)aba�d B c¸ Ï dba)abaBd5¸ c Ëx± e � ¸ Ï dba)aba�d5¸ c î K ê×ÐÕØ ¸ n ± P n� �$3��E5 ó�M�M8Ä|á�MNÈgè9á�ÅWê6ÌPM6ì���áQÇãé Í Ó�Ï Í�Í M Í ìÕìJÐ�Ø}Ì è �ìÒÔ]ObØ­ÐÕØ}Ì Ð�,ósr n ô Ç�áOÏmÅ�Ì è�ÈMï ÌPM×Ô Í ì.áPÇ Ëx±ÕÌ :Í

ó�M�M�Å Í ì�ìÕÌ�Ó Í ìE� ± g ìÕÔ`ObØvÐÕØ}Ì Ð��¬ó�ÅWágéB n ô?õ ¸ n Ç�áOÏ�Å�Ì è�È�ï�ÌQM6Ô Í ìZáPÇ Ë é/2-bX ZÑzb5 �¢ê×è}é�{�ó¢r d�¸ ô�± e|� Ì r d5¸ Í,ìÕÔ`ObØvÐÕØ}Ì Ð h ê6è`O Í A õ e|� Ì r"Í î ê×Ð�Å�ÌQÜ Í ì"ì Í è|ì Í ÐÕáúê6è ÐÐ Í Ï�Ä9Ï Í ÐT�¢� Ì r d5¸ Í�ÌOìvA Ì ¸ Í�Ì�è}é´ÐÕØgÔ}ì ÐÕØ Íì Í è�Ð Í è]O Í áOè�ÐÕØ Í M Í Ç=Ð�Ð�Ï�Ì�è}ì�M6Ì Ð Í ì�ÐÕá����¢ê×è|é{�ó ¸ ô�± A Ì ¸ Í,ìÕÔ`ObØvÐÕØ}Ì Ð<�{ è9á�è Ð Æ Í ÏÕá ��{ è9á�è Ð Æ Í Ï�áo�é Í Óg�QóX{ ô ì5Å�ÌQM�M �Õé Í ÓO�QóD{ ô ì5Å�ÌPMNM��é Í Ó � óD{ ô ì�ÅWÌPMNM °�á�ÐÕê~O Í Ð�Ø}Ì�ÐmA�ê6ì"è9á Ð4è Í O Í ì�ìÕÌ�ÏÕê�MNÈ�Ì�Ï�ê×è}Óá�ï Í Ï,ìÕáPÅ Í ï�Ì Ï�ênÌ à"M Í * ìÕá KãÍ OVÌ è2= ТÔ|ì Í é Í Ó � *ê×è|ìÖÐ Í Ì�é KãÍ ìÕØ9á�Ô`M6éBÌ�ì�Ü ÐÕØ}Ì Ð�Ð�Ø Í O á Í P ÐO ê Í è�Ð�ì�áQÇ?{´à Í ì5Å�ÌPMNM/é�ÓZØ�Ô|ì KãÍ Ó Í Ðq�HìÑá ÐÍ P¦O ê Í è�Ðbì�áQÇ�{»Ø}Ì ï Í ì5Å�ÌQM�M.ìÕêNÆ Í �Qé{�ó � n d5¸ n ô?õ�� Ç�áOÏ�ÌQM�M Ë ÓZØ9ênì"ênì"Ì�M6ê×ÐÒÐ�M Í ÐÕÏ�ê�O�Ügê Í Ï�z à9ÔQÐ4Ó�Ô Í ìÕìÕê×è}ÓÐÕØ}Ì Ð � n ê6ìúìÒá�Å Í Ø9á K Ï Í M6Ì Ð Í é ÐÕásB n Ì è|é¸ n Ï Í Å�Ì ê6è}ì�ÌOì�êqÐ�ênì î KãÍ O á�Å Í Ô`Ä K êqÐ�Ø��{�ó ¸ n ô�± B n Ç�á�ϨÌPMNM Ë ��z'ÐÕØ}ê6ì­ÓOÔ Í ì�ì�O�Ì�èà Í ï Í Ï�ê�R Í é�ÐÕáWà Í Ï�ê6Ó�Ø�Ð^é

/2-bX Z�ÒC5 �}Ì�O�ÐÕáOÏ {'Ì�è}é�Ï Í Ä|áOÏÒÐäÌQM�M�Ä1áPM�È�è}áPÅWê6ÌPM6ì�,ósr ô�± g ìÕÔ`ObØvÐÕØ}Ì Ð ¸"÷ �,ósr ô éQê6ïgê6é Í ì�{ ÓZØ Í Ð�Ï�Ì�è}ì5MnÌ�Ð�ê×áOè�ì ÍVÍ Å�ì�á�àgïgê6á�Ô}ìbw\��}ÌPO ÐÕáOÏ{~Ì è}é�Ï Í Ä1á�ÏÕÐ�ÌQM�MmÅ Í ìÕì�Ì Ó Í ì;� ± g ìÒÔ]Obظ¨÷ � é9ê×ïgêné Í ì�{¾é �¨ÓZØ Í êNÅjÄ1á�ÏÕÐ�Ì è�ÐZÐÕØ}ê×è9ÓÐÕáaè9á Ð Í ê6ì"ÐÕØ|Ì�Ð�ê×Ð�ênì4Ì&Ç�á�ÏÕÐÕÔ9è|Ì�Ð Í O áOê×è`O�ê Ðé Í è]O Í ÐÕØ}Ì ÐMÐ�Ø9ênì�ê6ì�ÌPO ÐÕÔ}ÌPMNM�È KÑÍ MNM Ð é Í R}è Í é�éHùèqÄ}Ì�ÏÒÐ�ê�O�Ô"M6Ì�Ï�A Ì ¸ Í,ênì�Ì�Ô9è9ê Ø Ô Í Ç^ÌPO ÐÕáOÏÕê�ÆVÌ ÐÐÕê6á�è�éQá�Å�Ì ê6è�ó^Ô"ÄQÐ�á?Å"Ô"M×ÐÕê�Ä"M6ê�OVÌ�Ð�ê×áOè}ì�à�È Í M ÐÍ Å Í è�ÐbìÑáPÇJA ô é�ósÓZØ9ênìãè Í�Í é�è9á�ÐÑØ}Ì ï Í à Í�Í èÐÕØ Í OVÌ�ì Í ê�Ç�A KãÍ Ï Í è9á Ð�Ì�èwê6è�Ð Í ÓOÏ�ÌPM�éQá ÐÅ�Ì ê6è î á�Ï�ìÕá KÑÍ à Í M6ê Í ï Í é ôß Í ìÒÔ"ÅjÅ�Ì Ï�ê�Æ Í ÐÕØ Í Ï Í ìÕÔ"M×ÐÕê6è9Ó��ÒØ9ê6Ó�Ø Ð M Í ï Í M.ÌQM6Ó�áOÏÕê×ÐÕØ`Åm�%Ç�á�Ï�é Í O áQéQê6è9ÓWêné Í ÌPMmO áQé Í ìZà Í M×á K éLHùè�ÐÕØ Í­Í¡U Ä"MnÌ è}Ì ÐÐÕê6á�è î KãÍ Å�ÌPÜ Í ÌMì�M6ê×ÓOØOÐ;ì�ÈgèOÐbÌPO ÐÕê~O�ObØ|Ì è9Ó Í w2Hùè}ìÒÐ Í Ì�é�áQÇ�ìÕÌ1Ègê6è9Ó�{�ó ¸ n ô�± B n î KÑÍ é Í R}è Í ÌMè Í)K ê6é Í ÌQM [ n QTA Ì ¸ ÍO áOè}ìÕê6ìÒÐÕê6è9Ó�áPÇ3Ä|á�MNÈgè9á�ÅWê6ÌPM6ì�{âìÕÔ`ObØ�Ð�Ø}Ì�Ш{�ó ¸ n ôT± B n é�H ÐTOVÌ è�à Í ï Í Ï�ê�R Í é�Ð�Ø}Ì�Ð [ n ê6ìt×ÖÔ}ìÒÐJÐ�Ø Í ìÒÔ"Å$áPÇ;ÐÕØ Íêné Í ÌPM6ìEB n ó�ïgê ÍbKÑÍ é�Ì�ìãÌ è�êné Í ÌPM|áPÇJA Ì ¸ Í ô Ì è|é�ó ¸J÷�¸ n ô ékßäØ9ê�M Í ÐÕØ Í ObØ}Ì�è9Ó Í ênìãì5Ègè�Ð�Ì�O�ÐÕê~O î ê×ÐãÌQM�M6á K ì;Ô}ì?ÐÕá"Ð�ÌQÜ ÍÌ�Ç Í)KBÍ¡U ÐÕÏbÌWìÖÐ Í Ä}ìZê6è�ÐÕØ Í ì Í è}á Ð Í ì­ó K Ø9ê~ObØ KÑÍ éQênéQè2= Ð�Å�Ì è|Ì Ó Í ê6èvÐ�Ø Í M Í O�Ð�Ô9Ï Í ô é¼ � X�� 0�*,� �.- -0/�X�1 -2� X�_ 5� ��� X 3,5 \Ï Í M6Ì ÐÕê6ï Í MNÈ^Ä9Ï�êNÅ Í Ï î ê6é Í ÌQMnì B Ï d)aba)aBa B c ê6èúÌ�ÏÕê6è9ÓMA î Ì¦Å Í ì�ì�Ì Ó Í ì�Ä}Ì�O Í)g QsA~Ì è}éq Í M Í Å Í è�Ð�ì

+����10540�@6���4�Ay���%40��0L�/0���4,/> �¡0�� ���y��>¡ �0E> ¢ ��£X� « �¤�¥

ëbv Ð ë � c

Page 129: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

¸ Ï dba)a)a�d�¸Pc ± Ayé¦ 3 � Z X�1 �s� X �TZ �"_y� \ XG-bX�_§� 5 ¨ Ì�è}é�© î K Ø9á�ì Í ObØ}á�ê~O Í ì­é Í Ä Í è}é\áOè�ÐÕØ Í ÏÕê6è9ÓjA î ê×Ð�ì�ìÒê�Æ Í ìÖÐ�ÏÕÔ`O ÐÕÔ9Ï Í î ÐÕØ ÍÅ Í ìÕì�Ì Ó Í ì�Ä}Ì�O Í�g î Í Ð�OYé/2-bX Z �25 p Í R}è Í êné Í ÌQMnì [�Ï dba)a)a�d [ c Q�A Ì ¸ Í�Ð�á�à Í [ n õ ó4B n ô  Ûó ¸�÷¨¸ n ô é/2-bX ZÑzb5 �¢ê×è|é�è9á�è Ð Æ Í Ï�á�{ ± A Ì ¸ Í�ìÕÔ`ObØ�ÐÕØ|Ì�Ðãé Í Ó�óX{ ô ¥ ¨ Ì è}é Í ï Í Ï�ÈjO á Í P�O�ê Í è�ÐÑáQÇ,{¸ê6ìÑØ}Ì�ìãìÕêNÆ Í Ì�Ð�ÅWáOìÒЩ´ìÕÔ`ObØ�ÐÕØ|Ì�ÐJ{ ± ] cn�Ô Ï [ n é/2-bX Z�ÒC5 �}Ì�O�Ð�á�Ï�{´Ì è}évá�ÔQÐÄ9ÔQÐ�ÌPMNMC� ± g ìÒÔ`ObØvÐÕØ|Ì�Ð ¸"÷ � éQê6ïgê6é Í ì�{¾éÓ,á4ì�Ä Í O êNÇ¢È�ÐÕØ Í Ä}Ì�Ï�ÌPÅ Í Ð Í Ï�ì î Ì è}é�ÐÕá�ìÒØ}á K Ø9á K ÐÕáWÌPObØ}ê Í ï Í Ð�Ø Í ìÖÐ Í Ä}ìZÌ�à|á�ï Í�Í � Í O ÐÕê6ï Í MNÈ î KãÍ è Í�Í é�Ð�á�Ügè9á KÅWá�Ï Í Ì�à|áOÔQÐ"Ð�Ø Í Ï�ê6è9ÓYAyé{ß Í M6á KÞKãÍ Ó�ê6ï Í Ì�è Í¡U ÌPÅ�Ä`M Í áQÇ�Ø9á K KãÍ OVÌ èwÌPÄ"Ä"M�È�ÐÕØ Í Ì à1á�ï Í ìÒÐÕÏ�Ô`O ÐÕÔ9Ï Í Ð�áÓ Í Ð�ÌÂì L ÓÑM6ê6ìÒÐ Ð é Í O�áQé Í ÏÐé¨ß Í�K ê�MNM;ìÒÐÕê�M�M Í è}éúÔ"Ä�é9á�ê6è9ÓvÌ�M×á�ЭáQÇ K á�ÏÜ�ÐÕá^Ä9ÏÕá�ï Í O�á�Ï�Ï Í O�ÐÕè Í ì�ì�Ì è|éúÌ è|ÌQM�È�Æ Íà1á�Ô9è}é}ì[éqßãÔQÐ"à Í Ç�áOÏ Í Ó�á�ê6è9Ó�áOè�ÐÕá�Ð�Ø Í O�ÌOì Í áQÇZÐÕØ Í ì L Ó O�áQé Í ì î M Í Ðbì"é Í ì�O�ÏÕê6à Í Ìª�5ÅWê6è9á�Ï0�vÐ K ê6ìÒÐ"Ð�á�ÐÕØ ÍÌ à1á�ï Í ÌQM6Ó�áOÏÕê×ÐÕØ`Å´é h Ô"Ä"Ä1áOì Í ÐÕØ Í êné Í ÌPM6ìLB Ï dba)a)a�d B c Ø}Ì�é�è9á Ð�à Í�Í è�Ï Í MnÌ�Ð�ê×ï Í M�È�Ä9ÏÕê�Å Í NvßäØ}Ì Ð K áOÔ"M6é¨ÐÕØ Í Ï�ê6Ó�Ø�Ðé Í R}è9ê×ÐÕê6á�è�Ø}Ì ï Í à ÍVÍ è|NyÓZØ Í á�è Í Ä"MnÌPO Í�K Ø Í Ï Í?KÑÍ Ô}ì Í ÐÕØ Í Ï Í MnÌ�Ð�ê×ï Í Ä9Ï�êNÅ�ÌQM6ê×нÈ�ó^áQÇ [ = ì�à9ÔQÐ�Ð�Ø Í È�ê6è9Ø Í Ï�ê×ÐJê×ÐÇ�Ï�áPÅþÐÕØ Í Ï Í M6Ì ÐÕê6ï Í Ä9Ï�ê�ÅWÌPM×ê×нÈ�áQÇkÐÕØ Í B= ì ô ênì�ê6èúìÕÌ1Ègê6è9ÓWÐÕØ Í {åìÕØ9á�Ô`M6é&M6ê Í ê×è�Ð�Ø Í ê6è�Ð Í Ï�ì Í O ÐÕê6á�è�áQÇ�Ð�Ø Í êné Í ÌQMnì[ Ï d)a)abaBd [�c é)H$ÇZÏ Í MnÌ�ÐÕê6ï Í Ä9Ï�êNÅ�ÌPM×ê×нÈúéQá Í ìÕè2= ШØ9áPMné î KãÍ ìÒØ}á�Ô"Mné¨Ä9ÏÕáOà}Ì à`MNÈ�Ï Í ï Í ÏÕÐJÐ�á K Ø|Ì�Ð"ì Í�Í Å�ìMÐ�á�à Í ÐÕØ ÍÅWá�Ï Í O�á�Ï�Ï Í O�ÐJìÒÐ�Ì Ð Í Å Í èOÐJÐÕávê×è}ìÕênìÖÐ�á�è�z ê/é Í é î {åìÕØ9áOÔ"M6éLM×ê Í ê6è�Ð�Ø Í �[º�� ² p}_)�,áPÇ [ Ï d)a)aba�d [�c égÓZØgÔ}ì KÑÍ Ó Í ÐÐÕØ Í Ç�áPM�M×á K ê6è9ÓjÅWágé9ê�R Í é�ÌQM6Ó�á�Ï�ê×ÐÕØ"ÅñÇ�áOÏ�é Í O�ágé9ê×è9ÓWêné Í ÌPMmO áQé Í ì[é¼ � X�� 0�*,� �.- -0/�X�1 -2� X�_y- Ò25� ��� X 3,5 aêné Í ÌQMnì;BbÏ dba)a)ama B c ê6è�Ì4Ï�ê×è}ÓmA î Ì�Å Í ì�ì�Ì Ó Í ì�Ä}ÌPO Í�g Q�A Ì è}é� Í M Í Å Í è�Ð�ì ¸ Ï d)aba)a�d�¸ c ± Ayé¦ 3 � Z X�1 �s� X �TZ �"_y� \ XG-bX�_§� 5 ¨ Ì�è}é�© î K Ø9á�ì Í ObØ}á�ê~O Í ì­é Í Ä Í è}é\áOè�ÐÕØ Í ÏÕê6è9ÓjA î ê×Ð�ì�ìÒê�Æ Í ìÖÐ�ÏÕÔ`O ÐÕÔ9Ï Í î ÐÕØ ÍÅ Í ìÕì�Ì Ó Í ì�Ä}Ì�O Í�g î Í Ð�OYé/2-bX Z �25 p Í R}è Í êné Í ÌQMnì [�Ï dba)a)a�d [ c Q�A Ì ¸ Í�Ð�á�à Í [ n õ ó4B n ô  Ûó ¸�÷¨¸ n ô é/2-bX ZÑzb5 �¢ê×è|é�è9á�è Ð Æ Í Ï�á�{ ± A Ì ¸ Í�ìÕÔ`ObØ�ÐÕØ|Ì�Ðãé Í Ó�óX{ ô ¥ ¨ Ì è}é Í ï Í Ï�ÈjO á Í P�O�ê Í è�ÐÑáQÇ,{¸ê6ìÑØ}Ì�ìãìÕêNÆ Í Ì�Ð�ÅWáOìÒЩ´ìÕÔ`ObØ�ÐÕØ|Ì�ÐJ{ ± è cn�Ô Ï [ n é/2-bX Z�ÒC5 �}Ì�O�Ð�á�Ï�{´Ì è}évá�ÔQÐÄ9ÔQÐ�ÌPMNMC� ± g ìÒÔ`ObØvÐÕØ|Ì�Ð ¸"÷ � éQê6ïgê6é Í ì�{¾éh á K Ø}Ì�ÐWéQá Í ì�ÐÕØ9ênìY�5ÅWê×è}á�ÏjObØ}Ì è9Ó Í ��à9Ô`È\Ô}ì�Nþß Í M�M î êqÐ4ÐÕÔ9Ï�è}ì�á�ÔQÐ KãÍ Ó Í Ð"Ð�Ø Í�KãÍ ê6Ó�Ø�Ð Í é{M6ê6ìÒÐ Ð é Í O áQéQê6è9ÓÌQM6Ó�áOÏÕê×ÐÕØ`Å êNÅjÅ Í é9ê6Ì Ð Í M�Èsé h ê×è]O Í�KãÍ éQá�è2= Ð?Å�ÌQÜ Í Ì�è�È�Ï Í ìÖÐ�ÏÕê~O�Ð�ê×áOè}ì�á�è�Ð�Ø Í B n = ì î KãÍ O�Ì�è�Ï Í Ä Í Ì Ð Í ÌPObØ�á�è Íf n Ð�êNÅ Í ì�êNÇ?è ÍVÍ é Í é�é�ÓZØ Í ObØ}Ì�è9Ó Í�K ê�MNMkà Í ê6è�ÐÕØ Í Ì�è}ÌQM�ÈQìÒênì î ê×è K Ø9ê~ObØ KÑÍ è Í�Í é�ÐÕá�Ì Ï�Ó�Ô Í Ð�Ø}Ì�ÐgM×á K Ð é Í Ó�Ï Í�ÍÄ1áPM�È�è}áPÅWê6ÌPM6ìãáPÇ¢ì�ÅWÌPMNM�é Í Ó�Ï Í�Í ìÖÐ�êNM�M Í¡U ênìÖÐZê6è�Ð�Ø Í ê6é Í ÌQM è cnNÔ Ï [ n ékß Í éQênéQè2= Ð�Ì Ï�Ó�Ô Í ÐÕØ9ênìZÓ Í è Í Ï�ê~O�ÌQM�M�È Í ï Í è�ê6èÐÕØ Í ìÒê�ÅjÄ"M Í Ï�O�ÌOì Í *Qß Í O Í ÏÕÐ�Ì ê6è"M�È K á�è2= Ð�éQáWêqÐ�è}á K UußãÔQÐ�ê6è�ì5Ä Í O�ê�R[O Í)U ÌQÅjÄ"M Í ìZê×Ð�O�Ì è�à Í éQá�è Í Uß Í è9á K ì�Ä Í O ênÌQM6êNÆ Í ÐÕØ Í ìÕêNÅjÄ"M Í Ï�ÌPM×ÓOá�Ï�êqÐ�Ø"ÅGÌ�à|á�ï Í Ç�áOÏZÐÕØ Í OVÌ�ì Í áPÇÄì L Ó�O áQé Í ì�Ì�è}é�Ì è}ÌPMNÈ�Æ Í ê×Ð^é��}���� ÝÞ������������e�´#Ñí ���������ÓZØ Í ÌPM×ÓOá�Ï�êqÐ�Ø"ÅâÌ à1á�ï Í î ÌPÄ"Ä"M6ê Í évÐÕá4ÐÕØ Í OVÌ�ì Í áQÇÍì L Ó�O áQé Í ì î à Í O�áPÅ Í ìãÐ�Ø Í Ç�áPM�M6á K ê×è9Ó]wl � � - � X�1 -2���$3¢+ - zb5

ëbv Ð ë � n

Page 130: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� ��� X 3,5 úÏ Í MnÌ�Ð�ê×ï Í M�È�Ä9ÏÕê�Å Í ê×è�Ð Í Ó Í Ï�ì í � Ï ¤ �.�(� ¤ � c ï î Ï Í ìÒênéQÔ Í ì í7# Ï d)aba)a�d # c ï K ê×ÐÕØ # n ±� f ê î Ì�è}é¦Ä}Ì�Ï�ÌPÅ ÐÍ Ð Í Ï�ì � Ì è|é��8é� - � 0 : Ô9Ð�Ä9ÔQÐ�ÌPMNMJ� ±9��� î K Ø Í Ï ÍW� õ è knNÔ Ï � n î ìÒÔ]ObØ�Ð�Ø}Ì�Ð�� õª# n ó5ÅWágé � n ô é«��"_y� \ XG-bX�_§� 5 © î�¨ é/2-bX ZÑzb5 �¢ê×è|é�{ ±F�?Ì ¸ Í}ìÕÔ`ObØvÐÕØ}Ì Ðbw

S {G�� � éS é Í Ó1óD{ ô ¥ ¨ éS ìÑá Í P¦O ê Í è�ÐbìZáQÇ;{ Ì�Ï Í Ì�Ð�ÅWáOìÒÐ�©~ê6è�Ì�à}ìÒá�M×Ô9Ð Í ï�ÌQM6Ô Í éS {�ó # n ô?õ�� ó½ÅWáQé�� n ô Ç�á�Ï Í ï Í Ï�È Ëx±ÕÌ :Í]é/2-bX Z�ÒC5 �}Ì�O�Ð�á�Ï�{~Ì è|évÏ Í Ä1á�ÏÕÐ�ÌQM�M�ê6è�Ð Í Ó Í Ïbì��ÞìÕÔ`ObØ�ÐÕØ|Ì�Ð ¸4÷ �ÞéQê6ïgê6é Í ì�{~Ì è|éD� õ?# n ó-ÅWágé � n ô Ç�á�Ï�Ì ÐM Í Ì�ìÒÐ��Ñï�ÌQM6Ô Í ì�áPÇ Ët±¨Ì :Í/é

ÓZØ Í O áOè}éQê×ÐÕê6á�è}ì;{�ó # n ô;õÖ� óPÅWágé,� n ô Ì Ï Í è9á�Ð;ìÒá�è9ê~O Í ÐÕá­é Í ÌQM K ê×ÐÕØoé h á î KãÍ ÅWáQéQêNǢȭÐÕØ Í Å»Ð�á­Ì è ÍbØ Ô9ê6ï ÌPM Í è�ÐÇ�á�ÏÅ K Ø}ê�ObØ�ênì Í ÌOìÒê Í ÏkÐ�á"é Í ÌQM K ê×ÐÕØBwN� Í ÐE� õ è cn�Ô Ï � n Ì è}éjM Í ÐEA à Í ÐÕØ Í Ô}è9ê Ø Ô Í�Í M Í Å Í è�Ð;áQÇ ��¬ ìÕÌ ÐÕênì½Ç¢Ègê6è9ÓA õª# n ó5ÅWágé � n ô Ç�áOÏ Í ï Í ÏÈ Ë3±{Ì :Í?óXÌ�ìZÓOÔ}Ì ÏbÌ è�Ð ÍVÍ é�ÐÕá Í¡U ênìÖÐ�à�È�Ð�Ø Í ì L ÓäÐ�Ø Í áOÏ Í Å ô é3°�á�Ð Í ÐÕØ|Ì�Ð{�ó # n ô?õ�� ó½ÅWáQé�� n ô d Y Ëx±¨Ì :Í d ø {�ó$A ô;õÖ� ó½ÅWáQé2� ô aÓZØgÔ}ì¨áOÔ9ϨÓOáOÌQM?ê×è h Ð Í ÄÛë�ênì­Ð�á�R}è}é\ÌqÄ|á�MNÈgè9á�Å4ênÌQM K êqÐ�Ø�ì5Å�ÌPMNM�O á Í P¦O ê Í è�Ðbì�ÐÕØ}Ì Ð�ênì�Æ Í ÏÕá�ÅWáQéQÔ"M6áO� Ì Ð×ÖÔ}ìÒÐ�á�è Í Ä|áOê×è�ÐÐé�ß ÍTK ê�MNM.ìÕØ9á K à Í M6á K ÐÕØ|Ì�ÐãÐÕØ9ênì�Ä9Ï�á�à"M Í ÅìOVÌ è�à Í Ï Í éQÔ`O Í é�ÐÕáWÌO��ìÒØ9áOÏÒÐ Í ìÒÐÑï Í O�Ð�á�Ï�Ä9Ï�á�à"M Í Åó h�­ ® ô �Wê×è�ê6è�Ð Í Ó Í Ï�MnÌ�ÐÒÐ�ê�O Í ì^é�ß Í é Í R}è Í\h�­ ® à Í M×á K é

/ Z,- _y- XG�.-m¯�XG1�- - _D«T_ - ð 0 X \ � /2¯D« #§5 ó�Ä"Ä}ÏÕá U ê�ÅWÌ ÐÕê6á�è�ï Í Ï�ìÕê×áOè K ê×ÐÕØ�Ä|Ì ÏbÌQÅ Í Ð Í Ï � w � �F°�  24365,798;: HùèOÐ Í Ó Í Ï²± ³� VÅ�Ì�Ð�ÏÕê U)´ á�ï Í Ï¢ÐÕØ Í ê×è�Ð Í Ó Í Ï�ì î ê6è�Ð Í Ó Í Ï�à1á�Ô9è|é�µ î K ê×ÐÕØ4Ð�Ø Í Ä9Ï�áPÅWênì Í ÐÕØ|Ì�ÐÐÕØ Í Ï Í�Í¡U ênìÖÐbì�Ì4ï Í O ÐÕáOÏ;¶2· ±F��¸ ìÕÔ`ObØ�Ð�Ø}Ì�Ð ò ¶2· ´­ò ¥Tµ � � ó$± ô é< 3=8�>?: ó"¶ ±F� ¸ ìÕÔ`ObØvÐÕØ}Ì Ð ò ¶ ´­ò ¥Tµ%éÓZØ Í ì Í Ð�áQÇ?ï Í O�Ð�á�Ïbì�¶ ´ Ç�áOÏ�Å Ì�èaê6è�Ð Í Ó Í Ï9�5MnÌ�ÐÕÐÕê~O Í ��ê6èl± Ð éQêNÅ Í è}ìÒê6á�è|ÌQMkì5Ä}Ì�O Í é%ÓZØ Í Ð�ÌOì5Ü�áPÇ3R}è}éQê6è9Ó�ìÕØ9á�ÏÕÐï Í O�Ð�á�Ïbì�ê6èaìÕÔ`ObØLMnÌ�ÐÕÐÕê~O Í ìJênì�ÌVO)M6ÌOìÕìÕê�OVÌQMkÌ è}é KÑÍ MNM Ð ìÖÐ�Ô}éQê Í éqÄ}ÏÕáOà"M Í Å©é�H Ð K Ì�ì�M6á�è9Ó^O á�èQ× Í O�Ð�Ô9Ï Í é�Ð�ávà Í ° ® ÐØ}Ì�Ï�é�ÐÕá�ìÒá�M×ï ÍJÍ)U ÌPO�ÐMNÈ î ê?é Í é î K Ø Í è � ó �*ô?õ ë�é8�,ê6è}ÌPMNM�È î ê6è�Ì4à9Ï Í ÌPÜ�ÐÕØ9Ï�á�Ô9ÓOØ�Ï Í ìÕÔ"MqÐ î ìÒØ9á K èvÐÕá4à Í Ð�ÏÕÔ Í Ô}è}é Í ÏÏbÌ è}éQá�ÅWêNÆ Í éaÏ Í éQÔ`O�Ð�ê×áOè}ì�à�È�ó8×ùÐbÌ ê Ì T Í]é h Ô9à|ì Í Ø Ô Í è�Ð�M�Èú®�ê~O)O�ê6Ì�è`O ê6á Ì c}ë�ÍÑìÕØ9á KÑÍ é�Ð�Ø}Ì�ЭÐ�Ø Í ÌQÄ"Ä}ÏÕá U ê�ÅWÌ ÐÕê6á�èï Í Ï�ìÕê6á�è K êqÐ�Ø � ó �*ô�õ � ¤ � � ê6ìMÌQMnìÒᦰ ® Ð Ø}Ì Ïbé�Ô9è}é Í ÏMÏ�Ì�è}éQáPÅWê�Æ Í é�Ï Í éQÔ`O�Ð�ê×áOè}ì^é�°�á�Ð Í Ð�Ø}Ì�ÐJÐÕØ Í Ä9Ï�á�à"M Í Åà Í O á�Å Í ì?Ä1á Ð Í è�ÐÕênÌQM�M�È Í ÌOìÒê Í Ï�Ì�ì � à Í O á�Å Í ì�MnÌ Ï�Ó Í ÏÐé�ß Í Ì�Ï Í ê6è�Ð Í Ï Í ìÖÐ Í é�ê×è{Ä1áOìÕê×ÐÕê6ï Í Ï Í ìÕÔ"M×Ð�ì^é<óâì Í ÅWê6è}ÌQMÏ Í ìÕÔ"MqÐ�à�È�� Í è}ìÒÐÕÏbÌ î � Í è}ìÒÐÕÏbÌ î Ì è}év��á�ï�Ì�ì�Æ Ì dOd1ÍZìÕØ9á KãÍ é�Ð�Ø}Ì�Ð�ÐÕØ9ênì%Ä}ÏÕáOà"M Í ÅÞênì"ÐÕÏbÌPO�ÐbÌ à"M Í Ç�áOÏ�ìÕáPÅ Í R}è}êqÐ ÍÇ�Ô9è`O ÐÕê6á�è � ó �*ô ó�ê/é Í é î � ó4± ô ¤6¹ Ç�áOÏ Í ï Í Ï�Èq± ô é3ÓZØ Í ê6Ï�ÐÕØ Í á�Ï Í ÅâênìZÓ�ê6ï Í èvà Í M6á K é�?Z X - _�X \�z��m|�Ò£� � t8t !-# � ¹"��rEºU|��[º��o�¡´��¡¶¼»8���¢¹�·���[º��VtP��¶�·��/�s���{�"·Qº�·�¶��¡�-�)º � ó$± ôWõ � ¸ �~�¦�)��´���·��)´N�q����`��´�µ��:��¶��s·�´E����¶��?��� ��¹`�?´��¡��»Q�¢¹q�5¼T��¹`�?���Q�1p�-Ãß Í è9á K ìÕØ9á K Ø}á K ÐÕá�R}è|é�Ì�Ä1áPM�Ègè9áPÅWênÌQM.Ì�ìZÏ ÍbØ Ô9ê6Ï Í évê×è h Ð Í Ä�ë î Ô}ìÕê6è9Ó�ÓZØ Í áOÏ Í Å ë)vIé � é* X \y\ � z���|��ôü ���1�)�&�����¡�������]�$�$»��¡º���AÝ·Q� ² � ·�� ² · ² �$»Qº����m����p� ² ¨ ·Q� ² _��b�X]`_¡�s�)�`������p� ² ©q��·��[�Q�}�� �¡º���`��´�µ��:��¶��s·�´9{��5¼ ² �$»Pº�����·��E¶j����� ¨ ·Q� ² _��b�X]`_¡�s�)�`����·��u¶��1���C©����&·��¡�¡�Q´@p�-�g�1·Q´@p`���¡·Q���~�¢¼�µ�����»­{�ó$A ô;õ� ó)ÅWáQéE� ô _�·Q�F���E¼¡��p� ² ���%�`��´�µ��[��¶��s·�´��/��¶��)d/�����g·Q� ² ¨ f �[º��� � ² � ² ��p}_¹�·��"�Q´�µ��[�Q¶��s·Q´C»8����¹�_�� �^]`_¡�s�)�`���·���¶��1����© � ó ¨ �§½ ô ��t��~���s�)Ã

ëbv Ð ë T �

Page 131: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

«T_ -�-8¾ ß Í%K ê�MNM¢ì Í ÐJÔ"Äú̦M6Ì ÐÒÐÕê~O Í Ó Í è Í ÏbÌ�Ð Í é�à�ÈvÐ�Ø Í Å�Ì ÐÕÏ�ê UF´ ìÕÔ`ObØ�ÐÕØ|Ì�ÐMìÕØ9áOÏÒÐ�ï Í O ÐÕá�Ïbì�ê6è�ÐÕØ}ê6ì�M6Ì ÐÒÐ�ê�O ÍO áOÏÕÏ Í ì�Ä1á�è}é�Ð�á�Ä1áPM�Ègè9áPÅWênÌQMnì¢{ ìÒÔ]ObبÐÕØ|Ì�Ð?{�ó$A ô;õ�� ó�ÅWáQé � ô éuÓZØ Í ê6è�ÐÕÔ9ê×ÐÕê6á�è4à Í Ø9ê6è}é K Ø�È�Ð�Ø9ênì�ìÒØ9áOÔ"Mné¨à ÍÇ Í ÌOìÒê6à"M Í ê6ì¢Ð�Ø Í Ç�áPM�M×á K ê6è9Ó�ÌQM×Ð Í ÏÕè}Ì Ð Í ObØ}Ì ÏbÌPO Ð Í ÏÕê�ÆVÌ ÐÕê6á�è¨áPÇ1ÌgM6Ì ÐÒÐ�ê�O Í wmó�MnÌ�ÐÕÐÕê~O Í ê6è � ¸ ê6ì�Ì�ìÕÔ9à}ì Í Ð²µ�Q � ¸ ÐÕØ}Ì Ðênì�O¡M6áOì Í évÔ9è}é Í Ï�ì�OVÌQMnÌ Ï�Å"Ô`MqÐ�êNÄ"M6ê~O�Ì�Ð�ê×áOè�Ì è}é�Ì�é9é9êqÐ�ê×áOè î ê/é Í é î êNÇN¶ d x ± µ`Ì è}éF¿ ±F� ÐÕØ Í èF¿¶ d ¶V �x ± µcéLH$ÇKãÍ O�á�è}ìÕêné Í ÏãÐÕØ Í ì Í Ð�áPÇEO á Í P�O�ê Í è�ÐZï Í O ÐÕá�Ïbì í ÛÁÀ d)aba)a�d Û ½ áQÇEÄ|á�MNÈgè9á�Å4ênÌQMnì�{ ìÕÔ`ObØ�ÐÕØ}Ì ÐJ{�ó$A ô;õ�� ó�ÅWágé�� ô îÐÕØ Í è�ê6è}é Í�Í é�ìÒÔ]ObØ�Ì�ì Í Ð�ênì�O)M×á�ì Í é�Ô9è}é Í Ï�Ì�é9é9êqÐ�ê×áOè�Ì�è}é�ìO�ÌQMnÌ Ï�Å�Ô"MqÐ�êNÄ`M×ê~O�Ì ÐÕê6á�èoé�ÓZØgÔ}ì KãÍ ì ÍVÍ ÐÕØ}Ì Ð�ÐÕØ Í ì Í ÐáQÇ�ìÕÔ`ObØ�ï Í O ÐÕáOÏ�ìgÇ�áOÏ�Å�ì­Ì&MnÌ�ÐÒÐ�ê�O Í ê×è � ½ � Ï Ì�è}é�êqШênì­áOè"MNÈ�Ì&Å�Ì�ÐÒÐ Í Ï¨áPÇ�Ä Í Ïbì Í ï Í Ï�Ì�è`O Í ÐÕá&R|è}é\Ì è Í¡U Ä"M6ê~O ê×Ðà}ÌOìÒênì[é8ß Í M6á KÖKãÍ Ó�ê6ï Í Ì è Í¡U Ä"M6ê~O ê×Ð�à}Ì�ìÕê6ì î Ô}ìÕê×è}ÓWÐÕØ Í Ç^Ì�O�Ð�ÐÕØ|Ì�Ð�Ì è�È�ìÕÔ`ObØ&Ä|á�MNÈgè9á�ÅWê6ÌPMBO�Ì è�à Í­Í¡U Ä9Ï Í ì�ì Í évÌOì�,ósr ô ó¢r ÷ A ô  v � � î K Ø Í Ï Í �,ósr ô Ø}ÌOì�é Í ÓOÏ ÍVÍ Ì�Ð�ÅWáOìÒÐ ¨ ÷ ëséÍìÑá�è|ìÒêné Í ÏZÐ�Ø Í ó ¨  Ûë ô ³�ó ¨  äë ô ÅWÌ ÐÕÏ�ê U

´ õÃÄÄÄÄÄÄÄÅ

� � � � a)a)a �÷ A ë � � a)a)a �� ÷ A ë � a)a)a �� � ÷ A ë a)a)a �ééé ééé ééé ééé é é é ééé� � � a)aba ÷ A ë

Æ�ÇÇÇÇÇÇÇÈa

ß Í M Í Ì ï Í êqÐ?ÐÕá�ÐÕØ Í Ï Í Ì�é Í ÏkÐÕá­ï Í ÏÕêNǢȭÐ�Ø}Ì�Ð;Ð�Ø Í ì Í Ð;áQÇ�ï Í O�Ð�á�Ïbì í ÛÁÀ d)aba)aBd Û ½ ï Ð�Ø}Ì�Ð�O�Ì è4à Í�Í¡U Ä9Ï Í ì�ì Í é�ÌOìN¶ ´ Ç�áO϶ ±� ½ � Ï ê6ì;ÐÕØ Í ì Í ÐÑáQÇBO�á Í P¦O ê Í è�Ð�ì?áQÇ�ÌQM�M`Ä1áPM�Ègè9áPÅWênÌQMnìÑ{�ó ¸ ô;õ?É ½ nNÔ À Û n ¸ n ìÒÔ]ObØ�ÐÕØ}Ì Ðã{�ó4A ô;õÖ� óbÅWágéE� ô éß�È�ÓZØ Í áOÏ Í Å ëbvFé � î Ì�ï Í O�Ð�á�Ï�áPÇ ¨ ø Ð è9á�ÏÅ î Ì�è}é�Ð�Ø�Ô|ì¢ÌPMNM�O á Í P¦O�ê Í èOÐbì î Ì Ð�ÅWáOìÒÐ�©�O�Ì�è­à Í Ç�á�Ô9è|é­ê×è�Ä|á�MNÈgè9á�ÅWê6ÌPMÐÕê�Å Í ê×èvÐÕØ9ênì�MnÌ�ÐÒÐ�ê�O Í î Ä9Ï�á�ïgê6é Í é�Ì�ï Í O�Ð�á�ÏãáQÇ ¨ ø è9áOÏ�ÅâÌ Ð�ÅWá�ìÖÐ�© � �y½ � Ï Í¡U ê6ìÒÐ�ìãê6è�Ð�Ø9ênì�M6Ì ÐÒÐÕê~O Í éLHùè�Ð�Ô9Ï�èvìÕÔ`ObØ̨ï Í O ÐÕá�ÏZéQá Í ì Í)U ênìÒÐtÄ9Ï�á�ïgê6é Í é�Ì�ï Í O ÐÕáOÏÑÌQM�M�áQÇ K Ø}áOì Í O ágáOÏ�éQê6è}Ì Ð Í ìÑÌ Ï Í Ì Ð�ÅWáOìÒÐ;© � óÕó ¨  �ë ô �y½ � Ï ô Í¡U ênìÖÐbì[ékê6èÐÕØ}ê6ì�MnÌ�ÐÕÐÕê~O Í é3ÓZØ Í M Í ÅjÅWÌ4ênìZÐÕØgÔ}ì�Ä}ÏÕá�ï Í èoéß Í è}á K ÅWá�ï Í Ð�á K Ì�Ï�é}ì­ÐÕØ Í�Í P¦O ê Í è`O)È\áQÇ�Ð�Ø Í ì Í O á�è|é�ìÒÐ Í Ä�é : è`O Í Ì�ÓOÌ ê6è\Ð�Ø9ê6ì�Ç�á�MNM6á K ì�Ç�ÏÕá�Å ÐÕØ Í ì�ÌQÅ Íì Í ÅWê×è|ÌQM K á�ÏÜ�áPÇ;� Í è}ìÒÐÕÏbÌ î � Í è}ìÖÐ�Ï�Ì î Ì�è}é��.á�ï�ÌOì5Æ Ì d�d1Í�Å Í è�ÐÕê6á�è Í é\Ì à1á�ï Í î à9ÔQÐWÌPO�Ð�Ô}ÌQM�M�Èúênì"Ì�O á�ÅjÄ"M Í Ð Í MNÈéQêi� Í Ï Í è�Ð�Ï Í ìÒÔ"M×Ð K êqÐ�Ø9ê6èvÐ�Ø9ênì K áOÏ�Ü�ó K Ø9ê~ObØ�Ô|ì Í ìãÐÕØ Í ÌPM×ÓOá�Ï�êqÐ�Ø"Å Ç�Ï�áPÅ�ÓZØ Í á�Ï Í Å ëbvFé � ÌOì�ÌWìÒÔ9à}ÏÕáOÔQÐÕê6è Í ô é�?Z X - _�X \�z��m|��¨ü �����¡�S·��"�Q´�µ��[�Q¶��s·Q´,{ ±v�?Ì ¸ Ít�5¼ ² �$»Qº�� ¨ »8���¢¹^�����)���J_��b�X] _)�s�)�`���<�Ñ{&_�·�������¼¡·O_¡�-��º� ²�����)º?���`�-�$»��)º��)d$¶�� ² p´N�V��¹`�x¼¡·O_¡�-��º��×� ·��/�s���{�½¼?��¹`�?´N��· ² ����»��-�¡º�¶ f ���L�/��¶j���"�Q´�µ��[�Q¶��s·Q´���� ¨ ·�� ² �)Ãó�ì�Ì^O áOè}ì Í Ø Ô Í è`O Í�KãÍ Ø}Ì ï Í ÐÕØ}Ì Ð h Ð Í Ä � áPÇ;ÐÕØ Í ÌPM×ÓOá�Ï�êqÐ�Ø"Å$Ì à1á�ï Í O�Ì è�ÌQMnìÒávà ÍWÍ)UgÍ O ÔQÐ Í éúê×è¨Ä|á�MNÈgè9á�ÅWê6ÌPMÐÕê�Å Í é»ß Í áOè"MNÈ è ÍVÍ é`Ð�á�ìÒØ}á K Ð�Ø}Ì�Ð�Ì\Ó�ágáQéäìÒá�M×Ô9ÐÕê6á�è Í¡U ênìÖÐbì�Ð�á h Ð Í Ä»ëúÌ�è}é ÐÕØ Í èÛÏ Í Ì�ìÕá�è`Ì à1á�Ô9Ð�ÐÕØ ÍÄ}Ì�Ï�ÌPÅ Í Ð Í Ï�ìtÇ�á�Ï K Ø}ê�ObØvÐÕØ Í é Í O áQéQê6è9Ó�ÌPM×ÓOá�Ï�êqÐ�Ø"Å K áOÏ�ÜQì^éHùèvÐÕØ Í è Í)U Ð�M Í ÅjÅ�Ì KÑÍ Ä9Ï�á�ï Í ÐÕØ}Ì Ð�Ì"ï Í ÏÈ�ìÒØ9áOÏÒÐ�ìÕáPM6ÔQÐÕê6á�è�ÐÕá h Ð Í Ä�ë Í)U ênìÒÐ�ì î Ì è}é�ÐÕØgÔ}ì�ÓZØ Í á�Ï Í Å$ëbvFé � O�Ì�èR}è}é�Ì�ÅWáQé Í ÏbÌ�Ð Í M�È�ìÒØ}á�ÏÕÐ�ìÕáPM6ÔQÐ�ê×áOèoé* X \y\ � z���|~}�³ �`��´�µ��:��¶��s·�´1{��)·��/�~�¢¼�µ�����»V��¹`�¨_���� ² ���/�s���"�%�5¼�r[�$�-��sm»8���¢¹�_��b�X]`_¡�s�)�`�����5¼�·��¡�¡�Q´@p�-����·�´@p`�·���¶��1����© · ¥�� Ï�Ê ½ ��t��~���s�)ëT_ -�-8¾ ìÑáOè}ìÒêné Í Ï�Ð�Ø Í Ç�Ô9è`O�Ð�ê×áOè [ w � ½ � ÏË Ù ° ��¬ Ó�ê6ï Í èúà�È [ ó Û(À d)aba)a�d Û ½ ôJõ É ½ n�Ô À Û n A n ó/ÅWáQéU� ô é%ÓZØ ÍÏbÌ è9Ó Í áPÇ [ ê6ìER}è}êqÐ Í Ì è}é4Ø}ÌOì�ì5Å�ÌQM�M Í Ï8O�Ì�Ï�éQê6è}ÌPM×ê×нȭÐÕØ|Ì è�ÐÕØ Í éQá�Å�Ì ê6è�ó^ê?é Í é î � ¤ ó$© · ô ½ � Ï ô éuÓZØgÔ}ìkÐÕØ Í Ï Í Å�Ô}ìÒÐÍ¡U ênìÖÐMéQê6ìÒÐÕê6è`O Ð�ï Í O�ÐÕáOÏ�ì;� d ð ±j� ½ � ÏË Ù ìÕÔ`ObØ�ÐÕØ}Ì Ð [ ó$� ôZõ [ óbð ô éZß Í O áOè`O¡M6Ô}é Í Ð�Ø}Ì�Ð [ ó$� ÷ ð ôZõ�� ó-ÅWáQéC� ô éÓZØgÔ}ì KÑÍ Ø}Ì ï Í Ì�è9áOè Ð Æ Í Ï�á¦Ä1áPM�È�è}áPÅWê6ÌPMk{�ó ¸ ô�õSÉ ½ nNÔ À ó î n ÷ ñ n ô ¸ n ìÒÔ`ObØ�ÐÕØ}Ì Ð­{�ó4A ô�õÑ� ó$ÅWáQéU� ô é h ê6è`O Íî n d ñ n ±� Ë Ù î KÑÍ Ø}Ì ï Í Ê î n ÷ ñ n Ê ¥T© · é° Í)U Ð î KãÍ Ä9ÏÕá�ï Í Ð�Ø Í Ô}ìÕÔ}ÌQM�è Í¡U Ð�M Í ÅjÅWÌ�zûÐ�Ø}Ì�Ð�Ì�è�È�ìÒá�M×Ô9ÐÕê6á�èvÐÕá h Ð Í Ä�ë­ìÒÔQP¦O Í ì^é

ëbv Ð ë T ë

Page 132: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

* X \y\ � z���| t � ��º�º��¡´�·��/���1�)´�µ��[º���¶��V���`�-�/»��)º��E� Ï ¤ �(�.� ¤ � c ��´N�)�E� õ è cn�Ô Ï � n ��·�� ²mÌ õ èOÍ nNÔ Ï � n Ã�΢¼{�ó ¸ ô �~�¦·Q�`µ��`��´�µ��:��¶��s·�´��½¼ ² �$»Qº���� ¨ »8����¹�_� �X] _)�s�¡�]�s�V·Q��¶��1���E© ��p}_¹{��¹`·��ã{�ó$A ô­õ � ó�ÅWágéb� ô �T·�� ²�e¥ � �~��·Q�`µ¦���]�$�$»��¡ºT��p}_�¹&�¢¹"·Q��� õ A ó-ÅWáQé�� n ô ¼¡��º�����·�´@p`�¡���½¼ Ë ·Q� ² ó ¨  Ûë ô © � ½ ¤ Ì �3�¢¹"�)� ¸4÷ �² ��� � ² �¡�M{�ó ¸ ô ëT_ -�-8¾ ÓZØ Í M Í ÅjÅWÌ�ÐÕÔ}ÏÕè}ìMáOÔQÐ�Ð�ávà Í Ø|Ì Ïbé Í ÏJÐÕá�ìÖÐbÌ�Ð Í ÐÕØ|Ì è�Ð�áVÄ9Ï�á�ï Í UX� Í Ð¨� õ É Ë�Ê � õ A�ó$ÅWáQéG� n ô Î�é� Í Ð Ì · õ è nsã�é � n é3°�á Ð Í Ð�Ø}Ì�Ð Ì ·2Ï Ì é8ß�È�Ð�Ø Í O áOè}éQê×ÐÕê6á�è}ìZáOè�{ î KãÍ Ø}Ì ï Í Ç�áOÏ Í ï Í Ï�È Ët± � î{�ó$� ô ó½ÅWáQé�� n ô?õ {�ó4A ô ó½ÅWáQé�� n ô;õÖ� ó½ÅWáQé�� n ô aß Í O áOè`O¡M6Ô}é Í ÐÕØ|Ì�Ð�{�ó$� ô�õ � ó~ÅWáQé Ì · ô é�ßãÔQÐ�áOè�Ð�Ø Í á Ð�Ø Í Ï�Ø|Ì è}é KãÍ Ø}Ì ï Í Ê {�ó7� ô)Ê ¥ É ½ nNÔ À © � n ¥ó ¨  Bë ô © � ½ ¤ Ì ¥ Ì · éPìÑáPÅ"à}ê×è9ê6è9ÓvÐÕØ Í Ð K á^O�á�è}é9êqÐ�ê×áOè}ì î KãÍ Ó Í Ð"{�ó$� ôMõJ� î Ì�è}é�Ð�Ø�Ô|ì ¸�÷ �«éQê×ïgêné Í ì{�ó ¸ ô é

°�á KHKÑÍ ì Í�Í Å«ÐÕá�Ø}Ì ï Í ÌPMNM�ÐÕØ Í ê6è9Ó�Ï Í é9ê Í èOÐbì"z ÌQM�M KÑÍ è ÍVÍ é ênì4ÐÕáÕR}è}é áOÔQÐ K Ø}Ì�Ð�Ð�Ø Í ÈwÏ Í ÌQM�MNÈ{Å Í Ì�è ÐÐÕØ Í ègÔ"Å�à Í Ï�áPÇ�Ä}Ì ÏbÌQÅ Í Ð Í ÏbìWÐ}á K ê6è9Ó�Ì Ï�á�Ô9è}é ê6ì�ØgÔ9Ó Í Ì è}é\ê×ÐWê6ì4è9á�Ð�O¡M Í Ì�Ï�êNÇJÌPMNMÑÐÕØ Í Ì à1á�ï Í O áPÅ�à9ê6è Í Ð�áÓ�ê6ï Í Ì è�È Í ÏÕÏ�á�Ï Ð O á�Ï�Ï Í O�Ð�ê×áOè.U�Ó�á¦Å�ÌPÜ Í ì Í è}ì Í áPÇ�ÐÕØ Í Ì à1á�ï Í î M Í Ð�ìJÔ}ì�ÐÕÏÈ�Ô}ìÒê6è9Ó�Ì�è�ê6è}ÌQÄ"Ä}ÏÕá�Ä9ÏÕênÌ�Ð Í ObØ9á�ê~O Í áQÇÄ}Ì�Ï�ÌPÅ Í Ð Í Ï�ì^é�� Í ÐZÔ}ìãìÒÔ"Ä`Ä|á�ì Í � Ï õ � ø õÑ�(�(�gõ � c õ ��é�ó@ó�Ø Í Å�U�ß Í Ð�Ø9ênìÑênìZìÒá�Å Í)K Ø}Ì ÐÑê6è`O áOè}ìÒênìÒÐ Í è�Ð K êqÐ�ØÐÕØ Í Ø�È�Ä|á�ÐÕØ Í ìÒênì.Ð�Ø}Ì�Ð8� n = ì,Ì Ï Í Ï Í MnÌ�Ð�ê×ï Í M�È�Ä9Ï�êNÅ Í é�ßãÔQТÐÕØ9ênì�ênì�ÐÕØ Í à Í ìÖÐ K Ì1È�ÐÕáJÓ Í ÐkÌ�ì Í è}ì Í áPÇQÐÕØ Í ê6é Í ÌQé ô ÓZØ Í è� õ � c î Ì õ � Í î � õ � k é��¢ê U ìÕáPÅ Í ¨ é�ß Í OVÌ èúÌPÄ"Ä"M�È9� Í ÅjÅ�Ì�ë)vIé (4êNÇ KÑÍ M Í ÐX© · õ � Ï�Ê ½ õ � c Ê ½ î Ì�è}éÐÕØ Í èM� Í ÅjÅ�Ì�ë)vIé T OVÌ è�à Í ÌQÄ`Ä"M×ê Í é�ê�ÇJ©SÒ �y½ � c Ê ½ éL� Í ÅjÅWÌ�ë)vFé d�O�Ì�èWÐÕØ Í è�à Í ÌQÄ`Ä"M×ê Í é�ê�Ç?ó ¨  �ë ô © � ½ ¤ Ì îK Ø9ê~ObØäê6ì KÑÍ MNM�ÌPÄ"Ä9Ï�á U êNÅ�Ì�Ð Í éwà�ÈY� c Ê ½ � k ½ ¤ � Í é h á K ê×ÐÕØÛÌPMNM�ÐÕØ Í ì Í áOÔQÐÕÏbÌ Ó Í áOÔ}ì�ÌQÄ"Ä}ÏÕá U ê�ÅWÌ ÐÕê6á�è}ìWÌ�è}éÌ�ì�ìÕÔ"ÅjÄQÐÕê6á�è}ì î KÑÍ ì Í�Í�KÑÍ Ì Ï Í ê6èaÌ�ìÒê×ÐÕÔ|Ì�ÐÕê6á�è�ìÒê�ÅWêNMnÌ ÏJÐÕá�Ð�Ø Í4L�Í�Í é Ð h á�M×á�ÅWá�èúé Í O áQéQê6è9Ó&O�Ì�ì Í Ð K á^M Í O�ÐÕÔ}Ï Í ìà}Ì�O�Ü[wMß Í OVÌ è�é Í O�ágé Í Ä}ÏÕá�ïgêné Í éL � ¨   � ¨ ¤ �8éjÓZØ ÍWÍ¡U Ä9Ï Í ì�ìÒê6á�èúá�èaÐÕØ Í �mê h ênìTÅWê×è}êNÅWê�Æ Í é�à�È�ì Í ÐÒÐ�ê×è}Ó¨ õ   � � Ì è}é�Ð�Ø9ênì�Ó�ê6ï Í ìJé Í O�áQéQê×è}ÓVÇ�Ï�áPÅ � � � Ì Ó�Ï Í�Í Å Í è�Ð�ì^égÓZØ Í Ç�á�MNM6á K ê×è}Ó�ÐÕØ Í á�Ï Í Å ênì K Ø}Ì�Ð�O�Ì�èúà Íá�à9Ð�Ì ê6è Í éÕÇ�ÏÕá�Å&ÌúÏÕê6Ó�áOÏÕáOÔ}ì¨Ì�è}ÌQM�ÈQìÒênì­áQÇ�Ð�Ø Í Ì à1á�ï Í Ì�Ç=Ð Í ÏWìÒá�Å Í ÅWê×è}á�Ï"á�ÄQÐÕê�ÅWêNÆyÌ�Ð�ê×áOè}ì¨ê6è Ð�Ø Í à1á�Ô9è|é9ì"áOèÐÕØ Í O á Í P�O�ê Í è�Ð�ì�áQÇ�ÐÕØ Í Ä1áPM�È�è}áPÅWê6ÌPM6ì î Ì è}é ê6ì�Ä9Ï�á�ï Í è�à�È ! áPMnéQÏ Í ê~ObØ î L á�è î Ì�è}é h Ô}é}Ì è Ì T n Í]é ÓZØ Í Å�Ì ê6èéQêi� Í Ï Í è`O Í ênì�Ì   M×áOÓ2� c � M6á�ÓC��Ï�Ç^ÌPO ÐÕá�Ï�ê6è�ÐÕØ Í ÌQÅWá�Ô9è�Ð�áQÇ�Ì ÓOÏ ÍVÍ Å Í è�ÐbìÑÏ ÍbØ Ô9ê6Ï Í é�é8ÓZØ9ênì�O á�Å Í ìZÔ"Ä�à Í O�Ì�Ô}ì ÍÐÕØ Í � n = ì�Ì�Ï Í î Ô9èÇ�á�ÏÕÐÕÔ}è}Ì�Ð Í M�È î è9á�Ð�ÌQM�M ÍbØ Ô}ÌQM/é�?Z X - _�X \�z��m|5û£� ���1u!-# � ¹"�)º��?��t��~���s��·�´��~���D� ² �b_�� ² �¡ºE¼¡��º)Ó�� � _�� ² �¡���¢¹"·Q�8�Q�&�����1p�3·Q�^���`���$·Q�1_�� »8����¹Vº��)´@�·��/�����¡´�µ��[º���¶��T���]�$�$»��¡º��J� Ï dba)a)amd � c �3·�� ² ���b¼¡��º�¶�·��/�s�����"·Qº�·�¶��¡�-�)º � ·�� ² ·b»Qº��)¶��¡�]�[�"·Qº�·�¶��¡�-�)ºt�0�uº��b_������¡º��·�´�´�¶j�¡���)·)»�����»8���¢¹L·b»Qº����)¶j�)�`�����[º��Q�b� ² � ² � ç   � � gM6á�ÓC� c � M6á�Ó2� Ï ���j�`��´�µ��:��¶��s·�´E����¶�� ÃV�ìÕê6è9Ó�Ð�Ø Í êné Í ÌOì�áPÇ3Å"Ô"M×ÐÕê�Ä"M6ê�O�êqÐ�ê Í ì�áOè Í O�Ì�è�ó^ÌPMNÅWá�ìÖÐ ô Ó Í ÐJÏ�ê6é�áPÇkÐÕØ Í Ç^ÌPO�Ð�á�Ï � � ê×è�ÐÕØ Í Ì à1á�ï Í Ì ÓOÏ ÍVÍ Å Í è�Ð *Ì è|é�ÐÕØ9ênì K Ì�ì"éQá�è Í à�ÈÕßãá�è Í Ø Ì ��� Í]éqßÑáOè Í Ø\Ô|ì Í ì­ÐÕØ Í ì�ÌQÅ Í Å"Ô`MqÐ�êNÄ"M6ê~O ê×ÐÕê Í ì�á�è Í Ì�ObØ{O ágá�ÏbéQê6è}Ì�Ð Í éFV�ìÕê×è}ÓÅ"Ô`MqÐ�êNÄ"M6ê~O ê×ÐÕê Í ì�Ð�Ø}Ì�Ð;ï�Ì�Ï�È4Ì�ì�ÌgÇ�Ô9è`O ÐÕê6á�èWáQÇ�Ð�Ø Í � n = ì î ÓOê×ï Í ì�Ç�Ô9ÏÕÐÕØ Í Ï?ê�ÅjÄ9ÏÕá�ï Í Å Í è�Ðbì¢Ì�è}é4á�è Í OVÌ èWè9á K é Í O�ágé ÍÇ�Ï�áPÅ � ç   óÒët �Ô ô � Í Ï�ÏÕáOÏ�ê6è�ÐÕê�Å Í Ä1áPM�Ègè9áPÅWênÌQM�ê6è�ë � Ô î Ì è}é�M6á�ÓJ� c éTÓZØ9ê6ì�R}è}ÌPM,Ï Í ìÕÔ"M×Ð K Ì�ì�Ó�ê6ï Í è�à�È! Ô9Ï�Ô}ì K ÌPÅ4ê î h Ì�Ø}Ì ê î Ì è}é h Ô}é}Ì è Ì v�v�Í]é£ V¤�¥� ���"!�¦¨§�©��� ���­�k���ß Í è Í ï Í Ï�Å Í è�ÐÕê6á�è Í é�Ì�è�Ô9è}ÌPÅ"à9ê6Ó�Ô9áOÔ}ì�é Í O áQéQê6è9Ó�ÌQM6Ó�á�Ï�ê×ÐÕØ"ÅHÇ�á�Ï#ì L Ó O áQé Í ì î à9ÔQÐ�á�è Í O Í ÏÒÐbÌ ê6è"MNÈ Í¡U ênìÖÐbì[éÓZØ Í R}ÏbìÖÐ;ìÕÔ`ObØ�ÌPM×ÓOá�Ï�êqÐ�Ø"Å K Ì�ì¢Ó�ê6ï Í è"à�È"®�Ì�è}é Í M6à}Ì�Ô"Å Ì )�d1Í]é h Ô9Ï�Ä}ÏÕênìÒê6è9Ó�MNÈ�Ð�Ø9ê6ì�ÌPM×ÓOá�Ï�êqÐ�Ø"Å»éQá Í ì¢è9á�Ð;é Í O�ágé ÍÔ"ÄvÐÕáWØ}ÌPM�Ç,ÐÕØ Í ÅWê×è}êNÅ�Ô"ÅGéQênìÖÐbÌ è`O Í î Ì Ð�M Í ÌOìÖÐ�è9á�Ðãê6è�Ä1áPM�Ègè9áPÅWênÌQM1ÐÕê�Å Í éxÓ,á4Ó Í Ð�ÌWé Í O�áQé Í Ï�é Í O áQéQê6è9Ó�Ô`Ä�Ð�áØ}ÌPM�Ç�Ð�Ø Í ÅWê6è9ê�Å"Ô"Å$éQênìÖÐbÌ è`O Í î á�è Í è Í�Í é9ì�ÐÕá�O�áPÅ�à9ê×è Í ÐÕØ9ênì�ÌQM6Ó�áOÏÕê×ÐÕØ"Å K ê×ÐÕØúÌ ! ®qp é Í O áQé Í Ï^é ø ÓZØ9ênì K ÌOìéQáOè Í à�È Ì v�v�Í]éÕ<Ö . >@6[2½CØ×y�¡��ÙQ0E4LÚ�C)C.�GÛb.10540� ,�.(�ÁÛ)F�CØ�/D�CØ× ,�¥ Ö .10NÜ�4�Ay� 0��¡Ù140×y y40�¡Ú�CØ�/> ,�.y {>@6]Fm.�4,8�¡CØ×�F�CØ×y�¡�;Ú�0-,�> ¢��¡CØ×�6/0-,8Ý «YÞ 40ÙQC@�¡04�Ay�;�1>@2/D�0���CØ�b,/>¡ �40�§ÙQCØ×1Ay� 6:C�A�,/. 0�2½C)0�ß�25>@0½A¡,/6�C0¢P,�.10E2½C�A16s,$4�A¡,B4�Ay�;�10�ÚØ��050mC�A10m,/0��à ¨>@A�,/. 0Ná�â��QCØ� �bA1CØ �>�40��¥ ã:CØ ;�y× ,�0B,/.10

ëbv Ð ë T �

Page 133: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ÓZØ Í R}Ï�ìÒÐ�M6ênìÖÐ Ð é Í O áQéQê6è9ÓúÌPM×ÓOá�Ï�êqÐ�Ø"ÅeÇ�áOÏ_ì L Ó O áQé Í ì K Ì�ì�éQÔ Í Ð�á ! á�M6éQÏ Í ê~ObØ Í ÐWÌQM/é Ì v � Í/é¨ßÑáOè Í Ø Ì �P� ÍZÌ�è}é! Ô9Ï�Ô}ì K ÌPÅ4ê Í ÐWÌQM/é Ì vPv�ÍZê�Å�Ä}ÏÕá�ï Í é�ÐÕØ Í�Í Ï�Ï�á�Ï Ð O�á�Ï�Ï Í O�ÐÕê6á�èaà|áOÔ9è}é9ì4ìÕÔ9à}ì ÍbØ Ô Í è�ÐMNÈ�é ! Ô9Ï�Ô}ì K ÌPÅ4ê Í ÐWÌQM/é Ì vPv�ÍÌQMnìÕáWé Í ï Í M×á�Ä Í é�Ð�Ø Í Å�ÌPObØ9ê6è Í Ï�È�áPÇ¢êné Í ÌPMBO áQé Í ì[é

A(×y �ÙQ0���C0¢`0��4�/CØ��6:,/.1>@6m40�¡Ú�CØ��> ,/.y S254�AX��052½C��¡0��2¢i�/CØ W¥ Ö .10½Ag6�.1C�F&.1C�F�,�C��1C�4�äNÜ�åO�@>@D�0u40�¡Ú�CØ�/> ,�.y �æL4�A�40� �b6/>@6�,/C��/0½2½C@�¡0��¢i�/CØ 6ç�=Xè%<yé4ê0ë�0��4�/CØ�/6�¥

ëbv Ð ë TOT

Page 134: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

¯ °²±´³«µ�¶¸· ¹íì

t |nm|uYûOu�0^+n- _ � - ZE\v� 1v¼ 3 -)_ -2� ½�1w- ��-b3 - - l -J���43,+Õ�?Z X - _yx hQÍ ÄQÐ Í Å"à Í ÏM( î � ��� ë¾�¿,À�Á1Â�Ã9¿�ÄNîÆm�b_)�Xpº�¡º�Ç�Èq· ² ¹Qp�r|p ² ·�� r�_¡º��$���yÇIÓ8�Q�"���-·��`�/���[�MÓ3·�º�·Q¶j·Q�`�~�

�Wï���� ~.�4�¢!����jð��ã�k �4�ÓZØ9ênì�M Í O�Ð�Ô9Ï Í O á�ï Í Ï�ì�Ð�Ø Í é Í O áQéQê6è9Ó\áQÇ L�Í�Í é Ð ®�Ô"M�M Í Ï<ìÑáQé Í ì^é : ï Í ÏWÐÕØ Í È Í Ì�Ï�ì î Ð�Ø Í ì Í O áQé Í ì�Ø}Ì ï Í à Í�Í èÏ Í Ä Í Ì�Ð Í é�Ð�Ì Ï�Ó Í Ð�ìJáQÇÑé Í O áQéQê6è9Ó�ÌQM6Ó�áOÏÕê×ÐÕØ"Å�ì î K ê×ÐÕبÅ�Ì è�È�ìÕÔ`O)O Í ì�ì½Ç�Ô"MkÌQÄ`Ä9ÏÕá�ÌPObØ Í ì[éWHùèLÇ^ÌPO�Ð î ÐÕØ Í áOè Í áPÇ;ÐÕØ ÍÐ K á�Ä}ÌQÄ Í ÏbìZÐÕØ|Ì�Ð�M Í é�Ð�áWÐÕØ Í O Ô9Ï�Ï Í è�Ð�è}ÌQÅ Í áPÇ¢Ð�Ø Í ì Í O�ágé Í ì�Ï Í ÌPMNM�È�áOè"MNÈ�Ó�ê6ï Í ì�Ì è�ÌPM×ÓOá�Ï�êqÐ�Ø"ÅìÇ�áOÏ�é Í O�áQéQê×è}Óó^Ì�è}é¨éQá Í ìÒè2= ÐEO�á�è}ìÒÐÕÏ�Ô`O Ð�O áQé Í ì î Ä Í Ïkì Í ô é,®�Ô`ObبáQÇgÐ�Ø9ê6ì K á�ÏÜJênìmOVÌ Ï�ÏÕê Í é�áOÔQÐ�ê6è­ÐÕØ Í O áQéQê6è9Ó�Ð�Ø Í áOÏ�ÈgM6êqÐ Í ÏbÌ�ÐÕÔ}Ï Í éH ÐgO�Ô"M�Å4ê6è}Ì Ð Í ì�ê×è�Ì�é Í O�ágé9ê×è9ÓvÌQM6Ó�á�Ï�ê×ÐÕØ"ÅGÐÕØ}Ì ÐgO�Ì�è�é Í O�áQé Í"L�ÍVÍ é Ð ®�Ô"M�M Í Ï�O�ágé Í ì�Ô`Ä�ÐÕá�Ø}ÌPM�Ç�Ð�Ø Í ÅWê6è9êNÅ�Ô"ÅéQênìÖÐbÌ è`O Í î Ç�á�ÏV�)�1�)º�µ�ObØ}á�ê~O Í áQÇ�Ä}Ì ÏbÌQÅ Í Ð Í Ïbì[éSó�è Í M Í ÓOÌ�èOЭé Í ì�O�ÏÕê�ÄQÐÕê6á�è�áQÇãÐÕØ}ê6ì¨ÌPM×ÓOá�Ï�êqÐ�Ø"Å$ênì�Ó�ê6ï Í è�ê6èÕÓZØ Íê�Ì�è}éQà1ágáPܨáPÇ�ìÑáQéQê6è9Ó�ÓZØ Í áOÏ�È Ì c�cQÍ9ê×è4Ð�Ø Í ObØ}ÌQÄ9Ð Í Ï�áOèZó�M×Ó Í à9ÏbÌ ê~O !MÍ áPÅ Í ÐÕÏÈZìÑáQé Í ì�à�È%ê ñ Ø9á�M6éQÐ î ï�Ì è���ê×è�Ð îÌ è|é ®kÍ M�M×ê�Ü�Ì�Ì�è Ì ( � Í]éMß Í�K áOè2= ÐTO á�ï Í Ï�Ð�Ø Í ê6Ï�ÌQM6Ó�á�Ï�ê×ÐÕØ"Å�ÐÕáQé9Ì1È î à}ÔQЭê�ÇÑ®úÌ�éQØgÔ�Ó Í Ð�ì�ÐÕØ Í�Í è Í Ï�ÓPÈ î Ø Í ÅWê×ÓOØ�ÐÌ�é}évÌ K Ï�êqÐ Í Ô"Ä�á�è�Ð�Ø Í ê6Ï�ÌQM6Ó�áOÏÕê×ÐÕØ"ÅâÐÕá4ÐÕØ Í ì Í M Í O ÐÕÔ9Ï Í è9á Ð Í ì�ìÕáPÅ Í Ð�êNÅ Í ìÕágá�èoéHùè}ìÒÐ Í Ì�é�ÐÕáQé9Ì1ÈU= ì�M Í O ÐÕÔ9Ï Í�K ê�M�M�Ç�á�O�Ô}ìWá�è£M×ênìÒÐ Ð é Í O�ágé9ê×è9Ó\ÌPM×ÓOá�Ï�êqÐ�Ø"Å�ì?Ç�áOÏ L�Í�Í é Ð ®�Ô`MNM Í Ï¦O�ágé Í ì^é�V�è`M×ê�Ü Í ÐÕØ ÍÌQM6Ó�áOÏÕê×ÐÕØ`ÅWìjÅ Í èOÐ�ê×áOè Í é`Ì�à|á�ï Í î ÐÕØ Í ì Í éQá\è}á Ð K á�ÏÜÕÇ�á�Ï �)���¡º�µ�ObØ9áOê�O Í áQÇTÄ}Ì ÏbÌQÅ Í Ð Í Ïbì[é�ê�á KãÍ ï Í ÏWê�Ç�ÐÕØ ÍÌQM�Ä9Ø}Ì�à Í ÐÑìÕêNÆ Í Û ê6ìÑìÒÔ9P�O�ê Í è�Ð�M�È�MnÌ Ï�Ó Í î O á�ÅjÄ}Ì Ï Í é�ÐÕá"ÐÕØ Í é Í ÓOÏ ÍVÍ áQÇ�ÐÕØ Í Ä1áPM�È�è}áPÅWê6ÌPM6ì;ê×è�Ð�Ø Í Å Í ìÕì�Ì Ó Í ì5Ä}Ì�O Í îÐÕØ Í ì Í ÌQM6Ó�á�Ï�ê×ÐÕØ"Å�ì K áOÏ�Ü�ï Í ÏÈ KÑÍ MNM,Ì è}é�é Í O�áQé Í Å"Ô`ObØ^ÅWá�Ï Í ÐÕØ}Ì�è�Ø|ÌQMNÇ�ÐÕØ Í­Í Ï�ÏÕáOÏ�ì^éHùè ÌOé9éQê×ÐÕê6á�è ÐÕáwÐÕØ Í Ì à}êNM6êqнÈ`Ð�á�O á�Ï�Ï Í O�Ð^Å�Ì è�È Í Ï�ÏÕáOÏ�ì î ÐÕØ Í ì Í ÌPM×ÓOá�Ï�êqÐ�Ø"Å�ìvÌ�Ï Í ìÒê6Ó�è9êNR]OVÌ è�Ð�ê6èÛÐ�Ø}Ì�Ð�Ð�Ø Í ÈÄ"MnÌ1È Í é�Ì­ìÕê×ÓOè9êNR]O�Ì�èOÐ�Ï�áPM Í ê×èjÅ�Ì è�È�é Í ï Í M×á�Ä"Å Í è�Ð�ìkê6è�O á�Å�Ä`M Í)U ê×нȭÐ�Ø Í áOÏ�È�á�ï Í Ï¢Ð�Ø Í Ä}Ì�ìÒÐ�Ð K á�é Í O�ÌOé Í ì^é í é ÓFé î�.ê�ÄQÐ�á�è Ì ) � ÍQìÕØ9á KãÍ éMÐ�Ø}Ì�ТÐÕØ Í �5Ä Í ÏÅ�Ì è Í è�Ð,áQÇ1Ì�Å�Ì�Ð�ÏÕê U�K ÌOì�Ø}Ì�Ï�é­ÐÕáTO áPÅjÄ9Ô9Ð Í á�è¨ÏbÌ è}é9áPŧÅ�Ì�ÐÕÏ�ê~O Í ì<�Qé�ÓZØ9ê6ìÏ Í ìÕÔ"MqÐ K Ì�ì¢Ì�O áOè}ì ÍbØ Ô Í è]O Í áPÇ|ÌMìÒê�ÅjÄ"M Í Ô9è}ÌPÅ"à9ê6Ó�Ô}á�Ô}ì¢é Í O�áQéQê×è}ÓMÌPM×ÓOá�Ï�êqÐ�Ø"Å�Ç�á�Ï L�Í�Í é Ð ®�Ô"MNM Í Ï8O�ágé Í ì,êNÅjÄ"M6ê�O�êqÐê6è¨ß Í Ì ï Í Ï�Ì è}é � Í ê×Ó Í ègà}Ì Ô`Å Ì ë T Í/éjÓZØ Í é Í O áQéQê6è9Ó�ÌPM×ÓOá�Ï�êqÐ�Ø"Å Ç�á�Ï L�ÍVÍ é Ð ®�Ô"M�M Í Ï�O áQé Í ìMÌPM6ìÕá^Ä"M6Ì1È Í éaÌ�Ï�áPM Íê6è�Ï Í ìÕÔ"M×Ð�ì�ìÕØ9á K ê6è9ÓY�@H ® õ ®Eh ® ó�ì í Ì ) � î n�n Í�� î ��®FH ® õ ®�h�® ó�ì í Ì ë � Í��WÌ è}é�ÐÕØ Í � ® ì ® ÓZØ Í á�Ï Í Å Ì ) î d1Í��QéÓZØ Í Ï Í ênì�ÌQMnìÒá�Ì�ì Í Ø Ô Í è`O Í áPÇ|Ï Í ìÕÔ"M×Ð�ì�ìÕØ9á K ê×è}Ó�Ä9Ï�á�ÓOÏ Í ìÕìÕê6ï Í M�È KÑÍ ÌQÜ Í ÏuO áPÅjÄ"M Í¡U ê×Ð½È Ð Ð�Ø Í áOÏ Í ÐÕê~OtO�á�è}éQê×ÐÕê6á�è|ì¢ÐÕØ}Ì ÐK á�Ô"Mné�ìÕÔQP¦O Í ÐÕávìÕØ9á K �ß ®E® õ ® � Ì c�( î ë�ë î (9ë�Í/é?ÓZØ Í ì Í Ï Í ìÕÔ"MqÐbì�OVÌ èúÌPM6ìÕá�à Í ìÒê�ÅjÄ"M×êNR Í éúÌ è|é�áPÄ9ÐÕê�Å4ê�Æ Í éà�È�Ô}ìÕê×è}Ó�M×ênìÖÐ Ð é Í O áQé Í Ï�ìtÇ�áOÏ L�Í�Í é Ð ®�Ô"MNM Í Ï�O�áQé Í ì Ì ë�ë � Í/éÓZØ Í ÌQM6Ó�áOÏÕê×ÐÕØ"Åÿê6è"Ð�áQé9Ì1ÈU= ì�M Í O�Ð�Ô9Ï Í�K ê�MNMgà Í é Í Ï�ê×ï Í é¨ÌOì¢ÌJìÒê�ÅjÄ"M Í ÌPM×ÓOá�Ï�êqÐ�Ø"ÅBÐÕØ}Ì Ð Í)U Ä"M×áOêqÐbìkìÒá�Å Í ÏbÌ è}éQá�ÅWè Í ì�ìÄ9Ï�áPÄ Í ÏÕÐÕê Í ì,áQÇ��5M6ê×è Í ì@��ê×è�eò � î Ï�Ì ÐÕØ Í Ï¢ÐÕØ}Ì�è�Ì è�Ȩì Í Ï�ê×áOÔ}ì¢ÌQM6Ó Í à}Ï�Ì�ê�O8Ä}ÏÕá�Ä Í ÏÒÐ�ê Í ì[éEÓZØ Í á�è"M�ȨÌQM6Ó Í à9Ï�Ì�ê�O Í M Í Å Í è�Ð�ì

ë ( Ð ë T v

Page 135: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

K ê�MNM�à Í é Í O�áQéQê×è}ÓWÌPM×ÓOá�Ï�êqÐ�Ø"Å�ìtÇ�á�Ï L�Í�Í é Ð h áPM6áPÅWá�è&O áQé Í ìZÌ è}é KÑÍ = M�M�×ÖÔ}ìÒÐ�Ì�éQá�ÄQÐZÐÕØ Í ÅþÌOìãÌ4à"MnÌPO�Ü�à|á U Ç�Ï�áPÅÄ9Ï Í ïgê6á�Ô}ìtM Í O�Ð�Ô9Ï Í ékß Í = M�M.é Í ìO Ï�ê6à Í ÐÕØ Í ÌQM6Ó�áOÏÕê×ÐÕØ"Å~ê6è�Ð K á�ìÒÐ Í Ä}ì Ð R|Ï�ìÒÐ KãÍ Ó�ê6ï Í Ì�è�ÌQM6Ó�áOÏÕê×ÐÕØ`Å Ð�Ø}Ì�Ð�é Í O áQé Í ìÇ�Ï�áPÅ Ì�ì5Å�ÌQM�M?ègÔ"Å�à Í Ï"áPÇ Í ÏÕÏ�á�Ïbì�ó¢Å�Ô`ObØ{M Í ìÕì¨ÐÕØ}Ì�è\Ø}ÌQMNÇZÐÕØ Í Å4ê6è9ê�Å"Ô"ŬéQênìÒÐ�Ì è]O Í ô é�ÓZØ Í è KãÍ ×ÖÔ"ÅjÄ\Ð�á�ÌM6ê6ìÒÐ Ð é Í O�áQé Í Ï�Ï Í O�á�ï Í Ï�ê6è9Ó?Ç�Ï�áPÅìMnÌ Ï�Ó Í ègÔ"Å"à Í Ï�áPÇ Í ÏÕÏ�á�ÏbìMó�Ô9è}é Í Ï�Ð�Ø Í Ì à1á�ï Í Ð Å Í è�Ð�ê×áOè Í é�O�Ì ï Í Ì�ÐZáQÇ ÛWó ¨ ô é� Í Ð�Ô}ì�R}ÏbìÖÐ�Ï Í OVÌQM�M|Ð�Ø Í é Í R}è9ê×ÐÕê6á�è�áQÇ L�Í�Í é Ð ®�Ô"MNM Í Ï�O�áQé Í ì­ó¢R}Ï�ìÒÐ�O á�ï Í Ï Í é�ê6è&M Í O�Ð�Ô9Ï Í vWá�è hgÍ ÄQÐ Í Å"à Í Ï¨ë n ÐÕØ î� ��� ë ô é L�Í OVÌQM�M�ÐÕØ}Ì Ð�ÐÕØ Í ì Í Ì Ï Í ÐÕØ Í Ó Í è Í Ï�ÌPM×ê�ÆVÌ ÐÕê6á�è�áPÇ L�Í�Í é Ð h á�M×á�ÅWá�è�O�áQé Í ìãÐ�á�Å�Ô"M×ÐÕê6ï Ì�ÏÕênÌ�Ð Í Ä|á�MNÈgè9á�Å4ênÌQMnì^é/^X �N3�� - ��-b3�z"}�|�zÕ� �VX�X � -0ô»½ 0^0 X�_ l -2� XG� #¨³ ����� ² � È�p´�´N�¡º�_�� ² �Ø� L ® ò õ ¸ õ � �?�~�^�¢¹"��_�� ² �j»�¹"�1�)�a_� ² ���»x��º ² �%·�º��j�)�1·Q´@p`·��/�s���`�%�½¼;���-�1·Qº��s·��-���"�Q´�µ��[�Q¶��s·Q´@���½¼��-���-·�´ ² �$»Qº���·���¶��1����±�������)º%·�´�´E�)´N�)¶j�)�`��������e � ÃÓZØ Í�L ® ò�õ ¸ õ ��O áQé Í ênì­Ì&M6ê×è Í Ì Ï?O�ágé Í�K ê×ÐÕØÕ õ Û ò î � õ÷ö ò � ¸¸"ø î Ì�è}é K ê×ÐÕØ�Ï Í MnÌ�Ð�ê×ï Í é9ê6ìÒÐ�Ì�è`O Í�ù ë ÷ ¸ ��ú îK Ø Í è±¦¥ Û é3ÓZØ Í ÓOáOÌQM�áPÇ�ÐÕáQé9Ì1ÈU= ì�M Í O�Ð�Ô9Ï Í Ð�á4ÓOê×ï Í M×ênìÖÐ Ð é Í O áQéQê6è9Ó�ÌQM6Ó�áOÏÕê×ÐÕØ`ÅWìÑÐ�Ø}Ì�Ð K á�ÏÜ�Ä9ÏÕá�ïgêné Í é9±Iû Û é�9áOÏ�Ð�ágé}Ì1È8= ì�M Í O ÐÕÔ9Ï Í ê×ÐJênì�O�á�ègï Í è9ê Í è�Ð�ÐÕá�ÐÕØ9ê6è"Ü�áQÇ�Ð�Ø9ê6ì�Ð�ÌOì5Ü�Ì�ìJÌ��½Ç�Ô}è`O�Ð�ê×áOè�Ï Í O áOè}ìÖÐ�ÏÕÔ]O�ÐÕê6á�è�ÐbÌ�ì�Ü��WÏ�Ì ÐÕØ Í ÏÐÕØ|Ì è�Ð�Ø}Ì�Ð�áQÇ�Ð�Ø Í ÐbÌ�ì�ÜváPÇ;Ï Í O áOè}ìÖÐ�ÏÕÔ]O�ÐÕê6è9Ó�Ì�ï Í O�ÐÕáOÏ�áOÏJìÒÐÕÏ�ê×è9ÓvÏ Í Ä9Ï Í ì Í è�ÐÕê6è9ÓWÐÕØ Í O�ágé Í)K á�Ïbé�é�ß Í�K ê�MNM,ÐÕØgÔ}ìÐÕØ}ê×è"ÜaáQÇãÐÕØ Í Ï Í O Í ê6ï Í é K á�Ïbéúà Í ê6è9Ó�Ó�ê6ï Í èaà�ÈúìÕáPÅ Í Ç�Ô9è`O ÐÕê6á�è [ w1eò � ° e � î Ì�è}éúáOÔ9Ï­Ó�á�ÌQMkênì�ÐÕá�áOÔQÐ�Ä9Ô9ÐÌ�M×ênìÖÐ�áQÇZÌQM�Mkè Í Ì�ÏÕà�È�O áQé ÍbK áOÏ�é9ì î K Ø Í Ï Í Ð�Ø Í O áQé ÍbK áOÏ�é9ìJÌ Ï Í ÌPM6ìÕá�ÓOê×ï Í è�à�È&Ç�Ô9è]O�ÐÕê6á�è|ì��yw9eò � ° e � é¨ß ÍK ê�MNM?ÌPM6ìÕá Í¡U Ð Í è}é�Ð�Ø Í Ï Í MnÌ�ÐÕê6ï Í ê�ÌPÅjÅ4ê6è9Ó�éQênìÖÐbÌ è`O Í ÐÕá�ÌQÄ`Ä"MNÈ�ÐÕá^Ç�Ô9è`O ÐÕê6á�è}ì^é�ÓZØ�Ô|ì KÑÍ Ø}Ì ï Í Ð�Ø Í éQênìÖÐbÌ è`O Íà Í Ð KãÍ�Í è^Ç�Ô9è]O�ÐÕê6á�è|ì [ Ì�è}é�á�ÐÕáWà Í�ü ó [ d á ô?õ ® Ï@ý ã§þ(ÿ � Ì [ ó¢r ô �õ á�ósr ô Í]ét°�á Ð Í Ð�Ø}Ì�Ð�ÐÕØ9ênì�ênìE×ÖÔ}ìÖÐ�ÐÕØ Í ìÒÐ�Ì�è}é9Ì Ïbéê�ÌPÅjÅ4ê6è9Óúé9ê6ìÒÐ�Ì�è`O Í è}á�ÏÅWÌPM×ê�Æ Í é�ìÒá�ÌOì�ÐÕá�à Í à Í Ð KãÍ�Í è � Ì è}é`ë î êNÇ [ Ì è}é¨áaÌ�Ï Í ê6è�Ð Í Ï�Ä9Ï Í Ð Í é\ÌOì¨ìÖÐ�ÏÕê6è9Ó�ìÏbÌ�ÐÕØ Í ÏZÐÕØ|Ì è�Ç�Ô9è`O�Ð�ê×áOè}ì^é

�VX�X � -0ô»½ 0X0 X�_m/�X�1 -J���43,+�524365,798;: : Ï�Ì�O¡M Í Ì�O)O Í ì�ìZÐÕá�Ì�Ç�Ô}è`O�Ð�ê×áOè [ w�eò � ° e|� î Ì�é Í Ó�Ï Í�Í Ä}Ì�Ï�ÌPÅ Í Ð Í Ï�±�Ì è|é�Ì�éQênìÕÌ�Ó�Ï Í�Í ÐÅ Í è�Ð�Ä|Ì ÏbÌQÅ Í Ð Í Ï ü é% k�&.'ã: óåósM×ênìÖÐ�áPÇ¢ÌPMNM ô é Í ÓOÏ ÍVÍ ±¦Ä|á�MNÈgè9á�Å4ênÌQMnìN��w�eò � ° e � ìÒÔ]ObØ�Ð�Ø}Ì�Ð ü ó [ d � ô ¥ ü é°�á�Ð Í ÐÕØ}Ì Ð KãÍ Ø|Ì ï Í èJ= ÐWì5Ä Í O�ê�R Í é\Ï Í Ä9Ï Í ì Í è�Ð�Ì ÐÕê6á�è\áPÇ�ÐÕØ Í á�Ô9Ð�Ä9ÔQÐjÄ1áPM�È�è}áPÅWê6ÌPM��£Ä9Ï Í O ênì Í M�ÈséÕÓZØ Í è|Ì�ÐÕÔ}Ï�ÌPMÏ Í Ä9Ï Í ì Í è�Ð�Ì ÐÕê6á�è ÅWÌ1Èúà Í Ð�Ø Í O á Í P¦O�ê Í èOÐbì�áQÇN��é¦ê�á KÑÍ ï Í Ï î Ó�ê6ï Í èúÐ�Ø}Ì�Шê6è�Ð Í Ï�Ä1áPMnÌ�Ð�ê×áOèaênì­Ì�ìÒê�ÅjÄ"M Í ÐbÌ�ì�Ü î ê×ÐK á�Ô"Mné¨à ÍZÍbØ Ô}ÌQM�M�È­Ô}ì Í Ç�Ô"MgÐÕá�Ø}Ì ï Í �WÏ Í Ä9Ï Í ì Í è�Ð Í é¨Ì�ìkÌ�Ð�Ì�à"M Í áPÇ}ï�ÌQM6Ô Í ì^éEÓZØ Í MnÌ�ÐÕÐ Í Ï¢Ï Í Ä}Ï Í ì Í èOÐbÌ�Ð�ê×áOè%O Í ÏÒÐbÌ ê6è"MNÈÌQM�M6á K ìÑáOè Í ÐÕá¦O�áPÅjÄ9ÔQÐ Í ÐÕØ Í Ç�áOÏ�Å Í Ï�Ï Í Ä9Ï Í ì Í è�Ð�Ì�Ð�ê×áOè�ê6è�ÐÕê�Å Í Ä1áPM�È.ó Û ò ô étê�á KãÍ ï Í ÏZá�Ô9Ï�ÌPM×ÓOá�Ï�êqÐ�Ø"Å�ì K êNM�M.à ÍÅWá�Ï Í è}Ì ÐÕÔ9ÏbÌQM�ê×è"ÐÕØ Í M6Ì ÐÒÐ Í Ï¢Ï Í Ä9Ï Í ì Í è�Ð�Ì�Ð�ê×áOèB*�Ì è}é"ÌQMnìÒáMìÒê6Ó�è9êNR]OVÌ è�Ð�M�È�ÅWáOÏ ÍÑÍ P¦O ê Í è�Ð^é�Hùè?Ç^Ì�O�Ð KãÍxK ê�M�M�Ä9Ï�áQéQÔ`O ÍÏbÌ è}éQá�ÅWêNÆ Í éWÌQM6Ó�áOÏÕê×ÐÕØ"Å�ì¢Ð�Ø}Ì�Ð�O áPÅjÄ9Ô9Ð Í �¢ó$� ô Ç�áOÏÑÌ�è�È�ï Í O�ÐÕáOϲ� ± eò � ê6èWÐÕê�Å Í Ä|á�MNÈ.ó$� d ± d Û ô ékßäØ Í èq±IÒª�ÐÕØ}ê6ìÑê6ìÑï�Ì�ìÒÐ�M�ÈjÅ4áOÏ Í�Í P¦O ê Í è�Ð?Ð�Ø}Ì�Ð�Ä|á�MNÈ.ó Û ò ô é3ÓZØ Í ÅWáQé Í M|è ÍVÍ é9ì�O�Ì�Ï Í Ç�Ô"M Ð Í ìÕØ9ê×è}Ó"á�Ô9Ðb*�à9ÔQÐ KÑÍ�K á�èJ= ÐZéQá�ìÕáÏ�ê×ÓOØOÐMÌ K Ì1È�é�Hùè|ìÖÐ Í Ì�é KãÍ?K ê�MNMEM Í ÐJê×Ð Í ï�á�M×ï Í Ì è}é�Ð�Ø Í ì�Ä Í è}é�ìÕáPÅ Í Ð�êNÅ Í Ï Í ï�ê Í)K ê6è9ÓWÐ�Ø Í R}è|ÌQMmÅWáQé Í M¢Ì Ð�ÐÕØ ÍÍ è|éváPÇ�Ð�Ø Í ì Í è9á Ð Í ì^é�Wï��b� ÝÞ�������������� !���( Ù���!�� ¥���Ú ��!�!���!ß Í ìÒÐ�Ì�ÏÒÐ K êqÐ�Ø�é Í ìO Ï�ê×à9ê6è9Ó�Ì è Í)U ÐÕÏ Í Å Í M�È�ìÒê�ÅjÄ"M Í ÏbÌ è}é9áPÅWêNÆ Í é�ÌPM×ÓOá�Ï�êqÐ�Ø"Å�ÐÕØ}Ì Ð­Ï Í O á�ï Í Ï�ì�Ç�ÏÕá�Å$ï Í ÏÈ&M×ê×ÐÒÐM ÍÍ Ï�Ï�á�Ï ü é8ÓZØ Í ÌQÅWá�Ô}èOÐ�áPÇ Í ÏÕÏ�á�Ï K ê�MNM]O Í ÏÕÐ�Ì�ê×è`MNȨà Í ì�Å�ÌQM�M Í è9áOÔ9Ó�Ø4ÐÕá�Ä}ÔQÐ?Ô}ì�ê6è4ÐÕØ Í OVÌ�ì Í áQÇ1ÐÕØ Í Ô}è}ÌQÅ�à9ê×ÓOÔ9á�Ô|ìé Í O áQéQê6è9Ó�Ä9Ï�á�à"M Í Å©é h á�ÐÕØ Í Ä|á�MNÈgè9á�ÅWê6ÌPM2�\ÐÕØ|Ì�Ð"ênì ü Ð O¡M6áOì Í ÐÕá [ ê6ì"Ô9è9ê Ø Ô Í é : Ô9Ï"ÌPM×ÓOá�Ï�êqÐ�Ø"Å K ê�MNM?ÐÕÏÈ�Ð�áÓ�Ô Í ì�ìkÐÕØ Í ï�ÌQM6Ô Í �,ó4� ô î à�È�M6ágáPÜgê6è9Ó¨Ì�Ð [ áOè�Ì­ì5Å�ÌQM�M}ÏbÌ è|éQáPÅ´ìÕÌPÅ�Ä`M Í áPÇ�ï ÌPM×Ô Í ì^éEÓZØ Í ÐÕÏ�ê�O�Ü4ê6ì?ê×è�Ä}ê�O�Ügê6è9Ó­ÐÕØ ÍÏ�ê×ÓOØOÐ��ÕÏ�Ì�è}éQáPÅâì�ÌQÅjÄ"M Í �Fékß Í�K ê�MNMmM×ágáPÜvÌ�Ð [ áOè�Ìl��M×ê6è Í �4ê6è�e�ò � é�ß Í é Í R|è Í ÐÕØ Í è}á ÐÕê6á�è�áQÇ�Ì�M×ê6è Í è Í)U Ð^é

ë ( Ð ë T (

Page 136: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ó���ôà>�ô5ó �%ö�÷�ømùyö�÷���/^X �N3�� - ��-b3�z"}�|�Òþ� ¹`�%´����[��eò � �¢¹�º��pP»1¹q·g�`�����]���v»8����¹&��´���`��ð��~����¹`���)�)���5¼��"�Q���`����Ǩ�� õ w õ ɤ�? {�æð Ê � ± e|�Î a°�á�Ð Í Ð�Ø}Ì�Ð�êNÇÄð õ ��î Ð�Ø Í è�Ð�Ø Í M×ê6è Í ¨ � õ O á�è|ìÒênìÖÐbìZáQÇ;Ì�ìÕê×è9Ó�M Í Ä1á�ê6è�Ð î Í Mnì Í ê×Ð�O áOè}ìÕê6ìÒÐ�ìZáPÇ Í)U ÌPO�ÐMNÈ Û é9ê6ìÒÐÕê6è`O�ÐÄ1á�ê6èOÐbì�áPÇ�e�ò � é�ßäØ}êNM Í ê×Ð�ÅWê×ÓOØ�Ð�à Í Ð Í Å�Ä9ÐÕê6è9Ó�Ð�á�ìÒê�ÅjÄ"M�È�Ï�Ô"M Í á�Ô9ÐJÌQM�MmM6ê×è Í ì K ê×ÐÕØ�ð õ � Ì�ì�Ô9è9ê6èOÐ Í Ï Í ìÒÐÕê6è9Ó îKãÍ�K áOè2= ÐMéQá�ìÕá î Ç�áOÏ�Ï Í Ì�ìÕá�è|ì?Ð�á�à Í O¡MnÌ Ï�ê�R Í é&MnÌ�Ð Í Ï^é�ê�á KãÍ ï Í Ï KãÍ?K êNM�M�Ï Í Ç Í Ï�ÐÕá�ÐÕØ Í Å�ÌOì ² �$»��¡�:�¡º·��-��M6ê×è Í ì î×ÖÔ}ìÒÐ�ÐÕá�Ä9Ô9Ð�ÐÕØ Í ÅGê6èvÐ�Ø Í ê6Ï�Ä"MnÌPO Í éHùè\Ð�Ø Í é Í R}è9ê×ÐÕê6á�è�Ì�à|á�ï Í î KÑÍ ÐÕØ9áOÔ9Ó�Ø�Ð�áPÇZÐÕØ Í M×ê6è Í ÌOì"Ì�è\Ô9è9á�Ïbé Í Ï Í é\ì Í Ð"áQÇ�Ä1á�ê6è�Ð�ì^éLê�á KãÍ ï Í Ï¨ê×Ð�ênì"ÌPM6ìÕáÔ}ì Í Ç�Ô"M�ÐÕá�ÐÕØ9ê6è"ÜwáQÇ�Ð�Ø Í Å Ì�ì�Ì �5Ä|Ì ÏbÌQÅ Í Ð Í Ï�êNÆ Í é �aì Í ÐWáPÇ�Ä1á�ê6è�Ð�ì^é`®�á�Ï Í Ä}Ï Í O ênì Í MNÈ î ̨M×ê6è Í ênì�Ì Ç�Ô9è`O�Ð�ê×áOè¨�� õ w�e|� ° e�ò � î ÓOê×ï Í è�à�È ¨�� õ ós� ô?õ �% y�æðUéÓZØ Í Ð K á�Ï Í Ä9Ï Í ì Í è�ÐbÌ�ÐÕê6á�è|ìZØ}Ì ï Í Ð�Ø Í ê6ÏJÌOéQï�Ì è�Ð�Ì�Ó Í ì^é h�K êqÐ�ObØ9ê6è9Ó�à Í Ð KãÍ�Í è�Ð�Ø Í Å ênì Í ï Í è&Ç�Ô}ÏÒÐ�Ø Í ÏJà Í è Í R]O�ê6ÌPM îÌ�ì KãÍ%K ê�MNM;ì Í�Í ÐÕá K Ì Ïbé9ì�ÐÕØ ÍWÍ è|é�áQÇ?ÐÕØ9ênìTM Í O�Ð�Ô9Ï Í é­ßäØ9ê�M Í ì K êqÐ�ObØ9ê×è}Ó î á�è Í ìÕØ9á�Ô"MnéqÜ Í�Í Äúê6èLÅWê×è|é�Ð�Ø}Ì�Ð�ÐÕØ ÍÄ}Ì�Ï�ÌPÅ Í Ð Í ÏÕê�ÆVÌ ÐÕê6á�è�ì�Ä Í O êNR Í ìMÐ�Ø Í ì Í Ð­Ô9è}ê Ø Ô Í MNÈ:*.Ø9á KãÍ ï Í Ï�ÐÕØ Í ì Í Ð­éQá Í ìMè9á Шì�Ä Í O êNÇ¢È�ÐÕØ Í Ä}Ì�Ï�ÌPÅ Í Ð Í ÏÕê�ÆVÌ ÐÕê6á�èÔ9è9ê Ø Ô Í M�Èsé;Hùè�Ä|Ì ÏÕÐÕê~O Ô"MnÌ Ï�Ð�Ø Í M6ê×è Í ì ¨�� õ Ì è}é ¨�� � Í�� õ Í é Ì Ï Í ÐÕØ Í ì�ÌQÅ Í Ç�á�Ï�� Ï d � ø ± e|��ê�Ç8� ø �õ§� é�ÓZØ9ênì K ê�MNMà Í Ô}ì Í Ç�Ô"M�Ð�á4Ô|ì�M6Ì Ð Í Ï^éß Í ìÖÐbÌ ÏÕÐ;à�È4é Í ì�O�ÏÕê6à9ê6è9ÓMÐÕØ Í è9ê�O Í Ä9Ï�áPÄ Í ÏÕÐÕê Í ì�áPÇ[M6ê6è Í ì^é8ÓZØ Í R}ÏbìÖÐ;è}ê�O Í Ä9Ï�áPÄ Í ÏÕнȨáQÇ.ÌTM6ê×è Í ê6ì?êqÐbì;ÏbÌ è}éQá�ÅWè Í ì�ìÄ9Ï�áPÄ Í ÏÕнÈsékß Í R}Ï�ìÒÐ�é Í R|è Í ÐÕØ Í è}á ÐÕê6á�è�áQÇ�Ì4Ï�Ì�è}éQá�ÅìM×ê6è Í Ì è|é�Ì4ÏbÌ è}é9áPÅìM6ê×è Í ÐÕØ9Ï�á�Ô9ÓOØvÌjÄ1á�ê6è�Ð;� ± eò � é/^X �N3�� - ��-b3�z"}�|~��� ��º?·��`�����]��� ± eò � �3·�º�·�� ² ��¶ ´����:���¢¹�º�� pP» ¹m�Õ�~�T�¢¹"��º·�� ² ��¶H�1·Qº��s·��)´N� ¨ � õ »�¹"�)º���ð�~���[�^_bÊP� ² p�`� ¼¡�Qº�¶�´�µ�¼�º���¶ eò � à ³ º�·�� ² ��¶ ´����:�?����eò � �~���¢¹"�%º�·�� ² �Q¶ ��·�º��s·o�¡´�� ¨�� õ »�¹"�)º��)��Q��¹M�S·Q� ² ð·�º��_�¹"���¡�)�¨��� ² �-�`�¡� ² �)�`�/´�µ�·�� ² p�]� ¼¡��º�¶�´�µ�·��tº�·�� ² �Q¶§¼�º��¶ eò � ÃÓZØ Í Ç�á�MNM6á K ê×è}Ó�Ä9Ï�áPÄ1áOìÕê×ÐÕê6á�è Í¡U Ä"MnÌ ê6è}ìãÐÕØ Í è}ê�O Í ÐÕê Í ìZáPÇ¢ÏbÌ è|éQáPÅìM6ê6è Í ì^é«T_ -Zc- � � - �@-83Öz"}�|��§³ º·�� ² ��¶H´����[�?��¹º���pP»1¹�e ò � �~��·�_���´�´N�b_)���s�Q�¨�5¼3�`·���ºØ»8�~�)�%��� ² �$�`�¡� ² �)�`�B�"�Q���`��������e ò � ÃÎ)Ã�� Ãi�E¼¡�QºT� Ï �õ � ø ± e|� ����¹`�g�`�����`��� ¨�� õ ó¢� Ï ô ·Q� ² ¨�� õ ó¢� ø ô ·�º�� ² �~���/º��$� p�-� ² ��� ² �$�`�¡� ² �)�`�/´�µ ·Q� ² p�]� ¼¡��º�¶�´�µ¼�º��Q¶ eò � à � pº��¢¹"�)º�¶j�Qº��Á�`¼¡��º%�)�1�)º�µ��S�)�1�)º�µ��[�Q�}�X� �¡º���"�Q���`����� ·¦º�·�� ² �Q¶H´����:���¢¹�º�� pP» ¹Weò � �~�%·jº·�� ² ��¶�`�����`�-à Î)Ã�� Ãi��¼¡�QºL�¡���¡º�µL� ± e � ÷ É � Îo�?��¹`�j�`�����]� ¨ � õ ós� ô �~� ² �~���/º��$� p�-� ² p�]� ¼¡��º�¶�´�µ{���\eò � �I»�¹`�¡� ðH�~�² �~���/º��$� p�-� ² p�]� ¼¡��º�¶�´�µ¦����eò � Ã�VX \ �"_ xL5 °�á�Ð Í ÐÕØ}Ì Ð�ÐÕØ Í Ä9Ï�áPÄ1áOìÕê×ÐÕê6á�è�Ì à1á�ï Í Ï Í M×ê Í ì�á�è�Ð�Ø Í Ç^Ì�O�ÐJÐÕØ}Ì Ð KãÍ ÌQM�M6á K M6ê6è Í ìJÐÕávà Í é Í Ó Í è Í Ï�Ì Ð Í îÍ Mnì Í ê×Ð K á�Ô"Mné�è}á Ð�à Í ÐÕÏ�Ô Í é«T_ -�-8¾ ® Ï�á�áPÇ.ÐÕáWà Í Ì�é9é Í é�é° Í)U Ð KãÍ Ä1á�ê6è�ÐMáOÔQÐJÐ�Ø Í è9ê�O Í ÌPM×Ó Í à9ÏbÌ ê~O�Ä9Ï�áPÄ Í ÏÕÐÕê Í ìJáQÇ�Ð�Ø Í M×ê6è Í éTÓZØ}ê6ìMè9á�ÐÕê6á�èúÌPMNM6Ô}é Í ì�Ð�á�Ð�Ø Í Ï Í ìÒÐÕÏ�ê~O�ÐÕê6á�è|ìáQÇmÇ�Ô9è`O�Ð�ê×áOè}ìãÐÕá�M6ê×è Í ì[é8°�á Ð Í Ð�Ø}Ì�Ð K Ø Í èvÐÕØ Í M6ê×è Í ênìãïgê ÍbKÑÍ é�Ì�ìãÌ%Ç�Ô9è`O�Ð�ê×áOè ¨ w�e � ° eò � î Ð�Ø Í èvêqÐ�O á�ÅjÄ|á�ì Í ìè}Ì ÐÕÔ9ÏbÌQM�MNÈ K ê×ÐÕØ ÌqÇ�Ô9è]O�ÐÕê6á�è [ wkeò � ° e � ÐÕáaÓ�ê6ï Í Ì?�ÒÔ9è}ê×ï�Ì Ï�ênÌ�Ð Í Ç�Ô9è`O ÐÕê6á�è� [ Ê ½ wke � ° e � î ÓOê×ï Í è à�È[ Ê ½ ó¢� ô�õ [ ó ¨ ó¢� ôÒô é�ÓZØ Í Ç�áPM�M×á K ê6è9Ó^Ä9ÏÕá�Ä|á�ìÒê×ÐÕê6á�è�Ì�ì�ì Í ÏÕÐ�ìJÐÕØ}Ì Ð­Ï Í ìÖÐ�ÏÕê~O�Ð�ê×áOè}ìMáQÇãÌPM×Ó Í à9ÏbÌ ê~O�ÌPMNM�È�è9ê~O Í Ç�Ô9è`O ÐÕê6á�è}ìÓ�ê6ï Í ÌPM×Ó Í à9ÏbÌ ê~O�ÌPMNM�ÈWè9ê�O Í Ç�Ô9è`O ÐÕê6á�è}ì^é«T_ -Zc- � � - �@-83Öz"}�|�}�� ��º^�¡���¡º�µ ² �$»Pº����I±L�`��´�µ��:��¶��s·�´U��w�e ò � ° e|�£·Q� ² �¡���¡º�µ ´����[� ¨ w.e|� ° e ò � �g�¢¹"�¼bp�1_)�/�s���\� Ê ½ �~�?·�p�`����·�º��s·Q�$���`��´�µ��:��¶��s·�´8�½¼ ² �/»Pº�����·���¶j������±[Ã

ë ( Ð ë T d

Page 137: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

! ê6ï Í è�ÌTM6ê6è Í ¨ w�e|� ° eò � KÑÍ ì�Ì1ȨÐ�Ø}Ì�ÐãÌ�Ä|áOê×è�Ð�� ± eò � ´��s�¡�káOè4ÐÕØ Í M×ê6è Í ¨ ê�Ç�Ð�Ø Í Ï Í�Í)U ênìÒÐ�ì8� ± e9�"ìÒÔ]ObØWÐÕØ}Ì Ð� õ ¨ ó¢� ô é�H$Ç�ÐÕØ Í M×ê6è Í ênìJè9á ÐJé Í Ó Í è Í ÏbÌ�Ð Í î ÐÕØ Í èúìÒÔ]ObØ�Ì���ê6ì�Ô9è9ê Ø Ô Í êNÇ;êqÐ Í¡U ê6ìÒÐ�ì^é�H$ÇkÐÕØ Í M6ê×è Í ê6ìJé Í Ó Í è Í Ï�Ì Ð Í îÐÕØ Í è Í ï Í Ï�È&� K á�ÏÜQì î Ì�è}é KãÍ�K ê�M�Mké Í Ç^Ì Ô`MqÐ�ÐÕá^� õJ� ê6è OVÌ�ì Í áPÇÑÌQÅ�à9ê×ÓOÔ9ê×ÐÕê Í ì^é h Ä Í O êNR]O�ÌPMNM�È î ê�Ç��^M6ê Í ìMá�è ¨ îÐÕØ Í è KÑÍ M Í Ð ¨ þ Ï ó�� ô?õ �ÑìÕÔ`ObØ�ÐÕØ}Ì Ð�� õ ¨ ós� ô î êNÇ ¨ ê6ìZè}á Ð�é Í Ó Í è Í ÏbÌ�Ð Í î Ì è}é ¨ þ Ï ó�� ôãõ�� á Ð�Ø Í Ï K ênì Í éV�è}ê×ï�Ì Ï�ênÌ�Ð Í Ç�Ô9è`O�Ð�ê×áOè}ìMé Í R}è Í é�áOè�M×ê6è Í ìJÌ Ï�ê6ì Í è}Ì ÐÕÔ9ÏbÌQM�M�È�ê6è�ÐÕØ9ênì�M Í O�ÐÕÔ}Ï Í é ! ê×ï Í èúÌ�Ô}è9ê×ï�Ì�ÏÕênÌ�Ð Í Ä|á�MNÈgè9á�ÅWê6ÌPM� Ì�è}é�Ì�M6ê6è Í ¨ w�e|� ° eò � î KãÍ�K ê�MNMBM Í Ð � ½�� � é Í è9á�Ð Í ÐÕØ Í Ä}Ì ÏÕÐÕênÌQM:Ç�Ô}è`O�Ð�ê×áOè�Ç�Ï�áPÅ ¨ ó^ïgê ÍbKÑÍ évÌOì�ÌWìÒÔ9à|ì Í Ð�áQÇeò � ô ÐÕáWe|��Ó�ê6ï Í è�Ì�ì�Ç�áPM�M×á K ìbw � ½�� � É��Î õ � ó ¨ þ Ï ó�� ôÒô éEH$ÇkÐÕØ Í M×ê6è Í ¨ ênì�O¡M Í Ì�Ï�Ç�ÏÕá�ÅHO áOè�Ð Í¡U Ð KãÍ�K êNM�M�á�ÅWêqÐ�ê×Ð îÌ è|é�Ô}ì Í ÐÕØ Í è9á ÐbÌ�ÐÕê6á�è � É��Î�Ð�áWé Í è9á�Ð Í � ½ � � É��Î2éó���ôà>�ô4> æ õ�ø�û�I5ÿ3ý3ü`ö�aõJK: Ô9ÏxR}Ï�ìÒÐÑÌPM×ÓOá�Ï�êqÐ�Ø"Å Ç�áOÏÑé Í O áQéQê6è9Ó L�Í�Í é Ð ®�Ô"M�M Í ÏtO áQé Í ì;ênì?Ì�è Í M Í Å Í è�Ð�Ì�Ï�ÈjO áOè}ì ÍbØ Ô Í è]O Í áQÇ�Ð�Ø Í Ð K á�Ä9Ï�áPÄ Í Ï ÐÐÕê Í ì�áQÇ,ÏbÌ è|éQáPÅìM6ê6è Í ì�ê6èveò � Å Í è�ÐÕê6á�è Í é�Ì à1á�ï Í éãó�ÓZØ Í M6Ì ÐÒÐ Í Ï�Ä9Ï�áPÄ Í ÏÕнÈ�ênì�ÌPO�Ð�Ô}ÌQM�M�È�ÌjÄ9Ï�áPÄ Í ÏÕнÈ�áQÇ�ÌQM�M�M×ê6è Í ìÌ è|é�Ø Í è`O Í ÌPM6ìÕá�Ì�Ä9ÏÕá�Ä Í ÏÒнÈ�áPÇ¢ÏbÌ è|éQáPÅ M6ê×è Í ì^é ôó�ì�è}á Ð Í é Í Ì ÏM×ê Í ÏMê×ЭìÕÔQP¦O Í ìMÐÕá�O áOè}ìÒÐÕÏ�Ô`O�Ð­Ì è�ÌQM6Ó�áOÏÕê×ÐÕØ"Å�Ð�Ø}Ì�Ð?O á�ÅjÄ9ÔQÐ Í ì��,ó4� ô î Ó�ê6ï Í èaá�ÏbÌPO)M Í ÌPO)O Í ì�ìJÐÕá�ÌÇ�Ô9è`O ÐÕê6á�è [ w�eò � ° e � Ð�Ø}Ì�Ð�ênìZï Í Ï�È�O¡M6áOì Í Ð�á�Ì4é Í Ó�Ï Í�Í ±�Ä1áPM�Ègè9áPÅWênÌQM��&w�eò � ° e � éHùèÕÇ^ÌPO Ð�ê×Ð Í ï Í è ìÕÔQP¦O Í ì­ÐÕáúÓ�ê6ï Í Ì�ÏbÌ è}é9áPÅWêNÆ Í é�ÌQM6Ó�áOÏÕê×ÐÕØ`Å ÐÕØ|Ì�Ð�O�áPÅjÄ9ÔQÐ Í ì¨ÐÕØ9ênì¨ï�ÌQM6Ô Í¦K ê×ÐÕØSÄ9ÏÕáOà}Ì à}êNM6êqнÈÓ�Ï Í Ì Ð Í Ï�ÐÕØ}Ì�è î ìÕÌ1È î � � T9î á�ï Í Ï�êqÐbì�ê6è�Ð Í Ï�è}ÌPM�O áOê×è�Ð�áOì�ì Í ì[é L�Í Ä Í ÐÕê×ÐÕê6á�èqÇ�áPM�M×á KãÍ é�à�È�̦Ä"M6Ô9ÏbÌQM6êqнÈvï�á Ð Í ìÕÔQP¦O Í ìÐÕáaÏ Í éQÔ`O Í ÐÕØ}ê6ì Í Ï�ÏÕáOÏ?Ä9Ï�á�à}Ì�à9ê�M×ê×нÈsé : è]O Í Ð�Ø Í�Í ÏÕÏ�á�Ï%Ä9ÏÕáOà}Ì à}êNM6êqнÈ�Ï Í éQÔ]O Í ì¨ÐÕá�ìÕÌ1ȨM Í ìÕì¨ÐÕØ}Ì�è Ï� Û þ ò î ÐÕØ Í èÏ Í Ä Í Ì�Ð�ê×è}Ó�Ð�Ø9ênìZÐÕÏ�ê6ÌPM:Ç�á�Ï Í ï Í ÏȦObØ9áOê�O Í áPÇN�^Ä9Ï�áQéQÔ`O Í ìãÐÕØ Í O á�Ï�Ï Í O�Ð�O áQé ÍbK áOÏ�é K êqÐ�Ø&Ä9ÏÕáOà}Ì à}êNM6êqнÈvÌ�Ð�M Í Ì�ìÒÐ ø� éÓZØ Í à}ÌOìÒê~O4ê6é Í Ì�ÐÕá�O�áPÅjÄ9ÔQÐ Í �,ó$� ô ê6ì­ÐÕá&Ç�áO Ô}ì�áOè^×ÖÔ}ìÖÐ"Ì�ÏbÌ è|éQáPÅÝM6ê6è Í ¨ Ð�Ø9ÏÕáOÔ9Ó�Ø��\Ì è|é�Ð�á�Ï Í O á�è|ìÖÐ�ÏÕÔ`O ÐÐÕØ Í Ç�Ô}è`O�Ð�ê×áOèY� Ê ½ é�ß�È ® Ï�áPÄ1áOìÕêqÐ�ê×áOèäëy(ºé*(�Ð�Ø9ênìWê6ìWÌaÔ9è9ê6ï Ì�ÏÕênÌ�Ð Í Ä1áPM�Ègè9áPÅWênÌQMZáQÇMé Í ÓOÏ ÍVÍ ±]*ZÌ�è}éwà}Ì�ì Í é\áOè® Ï�áPÄ1áOìÕê×ÐÕê6á�è�ëy(Qé v KÑÍ Ü�è}á K ÐÕØ}Ì Ð�� Ê ½ Ì è}é [ Ê ½ Ø}Ì ï Í ÓOágágé�Ì Ó�Ï Í�Í Å Í è�Ð^é h á�� Ê ½ O�Ì�è î Ø9áPÄ Í Ç�Ô"M�M�È î à Í Ï Í O�á�ï Í Ï Í éÍ P¦O�ê Í èOÐMNÈ�Ì è|éváOè`O Í Ð�Ø9ênì�ênì�éQáOè Í î ÌQM�M KÑÍ è Í�Í é�Ð�á�éQá�ênì�áOÔQÐ�Ä9Ô9Ð,� ½ ɤ�:Î2étß Í M6á K�KãÍ é Í ì�O�ÏÕê6à Í Ì è}é�Ì è|ÌQM�È�Æ ÍÐÕØ Í Å4á�ìÖÐ Í M Í Å Í è�Ð�Ì�Ï�È�Ç�áOÏ�Å áQÇ1ÐÕØ9ênì;ÌQM6Ó�áOÏÕê×ÐÕØ`Å´é�Hùè4ÐÕØ9ênìuÇ�áOÏ�ŸÐ�Ø Í ÌPM×ÓOá�Ï�êqÐ�Ø"Ÿá�è"M�È"è Í�Í é}ì Û Ï ±E  � ÐÕá K á�ÏÜ éê�á KãÍ ï Í ÏãÐÕØ Í ÌQÅWá�Ô9è�Ð�áQÇ Í Ï�ÏÕáOÏZêqÐ K ê�MNM�O á�Ï�Ï Í O�ÐZênì Ø Ô}êqÐ Í ì5Å�ÌQM�M/é�ß Í�K ê�MNM K áOÏÕÏÈ�Ì à1á�ÔQÐ�Ð�Ø}Ì�Ð�MnÌ�Ð Í ÏZÐÕØ}á�Ô9ÓOØoé/ �s\�Zk0 X9�Mô � X�1 -J� X�_ 5� ��� X 3,5 : Ï�Ì�O¡M Í Ì�O)O Í ì�ìãÐÕá [ w eò � ° e � é ® á�ê6èOÐ�� ± e ò � Ì è|é�Ä|Ì ÏbÌQÅ Í Ð Í Ï;±Fé«T_ -]\�� � X 5 ÓZØ Í Ï Í�Í¡U ê6ìÒÐ�ì�ÌWé Í Ó�Ï Í�Í ±�Ä1áPM�Ègè9áPÅWênÌQM���w�e ò � ° e}��ìÒÔ]ObØ�Ð�Ø}Ì�Ð ü õ ü ó�� d [ ô ¥ Ï� ý ¸ � Ï ÿ é� - � 0�5 : ÔQÐ�Ä}ÔQв�,ó4� ô é/2-bX ZÑzb5 ® ê~O�ÜSð��eò � Ì�Ð�Ï�Ì�è}éQá�ÅGÌ è}é�M Í Ð ¨ õ ¨�� õ é/2-bX Z�ÒC5 � Í Ð � Ï d)aba)a�d � ¸ � Ï à Í éQênìÖÐ�ê×è`O Ð Í M Í Å Í è�ÐbìZáQÇ¢e|� ÷ É � Î2éE�}á�Ï Ëx±ÕÌ ±g Ûë¡Í î M Í Ð ¯ n õ [ ó$�?  � n ð ô é/2-bX ZÖ��� Hùè�Ð Í Ï�Ä1áPMnÌ�Ð Í ÐÕá{R}è|éäÌ é Í ÓOÏ ÍVÍ ± Ô9è}ê×ï�Ì Ï�ênÌ�Ð Í Ä1áPM�Ègè9áPÅWênÌQM � ìÒÔ]ObØ`ÐÕØ}Ì Ð � ó � n ô�õ ¯ n Ç�á�Ï Í ï Í Ï�È

Ë3±{Ì ±� Ûë¡Í]é/2-bX Z��J5 : ÔQÐÄ9ÔQÐ � ó �Oô é°�á�Ð Í ÐÕØ|Ì�Ð h Ð Í Ä � Ì�à|á�ï Í Ï ÍbØ Ô9ê6Ï Í ì Û ç ±%  ë�é�ß ÍjK êNM�M;ìÒØ}á K à Í M×á K ÐÕØ}Ì ÐMÐ�Ø9ênì�Ï Í Ø Ô}ê×Ï Í Å Í è�ЭìÒÔ9P�O Í ìgÇ�áOÏO áOÏÕÏ Í O ÐÕè Í ìÕì î Ä9Ï�á�ï�êné Í é�ÐÕØ Í­Í Ï�ÏÕáOÏãênì�ì�ÅWÌPMNM Í è9áOÔ9Ó�Øoé* X \y\ � z}B| t o � ² �)º��¢¹"�L·1����p¶��:���s�Q� ü õ ü ó [ d � ô ¥ Ï� ý ¸ � Ï ÿ �¢¹"� ·�´ »���º����¢¹�¶«/ �s\�Zk0 X��Mô � X�1 -2� X�_��p���1p���N�,ó$� ô »8���¢¹��:º�����·��)��´����/µ^·Q�x´N��·1��� ø � Ã

ë ( Ð ë T )

Page 138: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

«T_ -�-8¾ ß Í é Í R}è Í ±% Bël�Òà}ÌOé � Í ï Í èOÐbì�© n á�ï Í ÏJÐÕØ Í ÏbÌ è}é9áPÅeObØ9áOê�O Í áPÇcðÀé�ß Í ìÕØ9á K ÐÕØ|Ì�ШêNÇÑè9áOè Í áQÇÐÕØ Í ì Í¨Í ï Í è�Ð�ì�áObO Ô9Ïbì î ÐÕØ Í è�ÐÕØ Í ÌPM×ÓOá�Ï�êqÐ�Ø"ÅHO�á�Ï�Ï Í O�ÐMNÈ�áOÔQÐ�Ä}ÔQÐ�ì,�,ó$� ô é�ÓZØ Í è KÑÍ ìÕØ9á K ÐÕØ}Ì Ð�ÐÕØ Í Ä9ÏÕáOà}Ì à}êNM6êqнÈÐÕØ|Ì�ÐÑè}á�è Í áPÇ�ÐÕØ Í ì ÍJÍ ï Í è�Ð�ì;áObO Ô9Ïbì�ênìÑÌ ÐxM Í Ì�ìÒÐ�ë ÷ ó4±x �ë ô ü é8ÓZØ Í M Í ÅjÅ�ÌTÇ�áPM�M6á K ì�á�è`O Í ÐÕØ Í Ì à1á�ï Í ênìãìÒØ9á K è�éß Í é Í R}è Í ÐÕØ Í­Í ï Í èOÐ�© n ÐÕá�à Í Ð�Ø Í O�ÌOì Í � ¯ n �õ � Ê ½ ó � n ô �Féx°�á�Ð Í ÐÕØ|Ì�Ð�êNÇkè}á�è Í áPÇ,Ð�Ø Í ì Í­Í ï Í è�Ð�ìZáO)O�Ô9Ï î ÐÕØ Í èKãÍ Ügè9á K ÐÕØ Í ï�ÌPM×Ô Í áQÇ.Ð�Ø Í Ç�Ô9è`O�Ð�ê×áOèI� Ê ½ ó �*ô Ì Ð�±� �ëMé9ê6ìÒÐÕê6è`O�ÐZï�ÌQM6Ô Í ìãê6è�e|�Qé3�9Ô9ÏÕÐÕØ Í Ï î à�È ® Ï�áPÄ1áOìÕêqÐ�ê×áOè�ëy(Qé ( î� Ê ½ ê6ì�Ì�Ä1áPM�È�è}áPÅWê6ÌPM�áQÇké Í ÓOÏ ÍVÍ Ì Ð�ÅWá�ìÖÐ;±Fé3ÓZØgÔ}ì î ÐÕØ Í Ä|á�MNÈgè9á�Å4ênÌQM � Ç�áOÔ9è}évê×è h Ð Í Ä T �~�?ÐÕØ Í Ç�Ô9è]O�ÐÕê6á�è)� Ê ½ éÓZØgÔ}ìÑÐÕØ Í ï�ÌQM6Ô Í á�Ô9Ð�Ä9ÔQÐ�ê6è h Ð Í Ä^v4ê6ì�� Ê ½ ó �Oô;õ �,ó ¨ ó �OôÕô;õ �¢ó$� ô éLH ÐZÐÕØgÔ}ì�ìÕÔQP¦O Í ìÑÐ�á�à1á�Ô9è|é�Ð�Ø Í Ä9ÏÕáOà}Ì à}êNM6êqнÈáQÇ¢ÐÕØ Í à}Ì�é Í ï Í è�Ð�ì^é°�á�Ð Í ÐÕØ|Ì�Ð�© n Ø}ÌQÄ"Ä Í è|ìZê�Ç�Ì è}évá�è`MNÈ�êNÇ [ ó ¨ ó � n ôÒô �õ �,ó ¨ ó � n ôÒô é3ß�È ® Ï�áPÄ1áOìÕêqÐ�ê×áOèúë (ºé v î KÑÍ Ø}Ì ï Í Ð�Ø}Ì�Ð ¨ ó � n ô ê6ìÌ�Ï�Ì�è}éQáPÅñÄ1á�ê6è�ÐãáPÇ�e ò � Ì è|é�ÐÕØgÔ}ìÑÐ�Ø Í Ä9ÏÕáOà}Ì à}êNM6êqнÈ4Ð�Ø}Ì�Ð [ éQá Í ìãè9á�ÐZÌ�Ó�Ï Í�Í�K êqÐ�ØI��Ì�ÐãÐÕØ9ênì�Ä|áOê×è�Ð�ênì Í)U ÌPO�ÐMNÈü ó [ d � ô é�ÓZØgÔ}ì KãÍ Ø}Ì ï Í ÐÕØ}Ì Ð�ÐÕØ Í Ä9Ï�á�à}Ì�à9êNM6ê×нÈváPÇL© n ênì ü é�ßtÈvÐÕØ Í Ô9è9ê6á�è�à1á�Ô}è}é î ÐÕØ Í Ä9ÏÕáOà}Ì à}êNM6êqнÈvÐÕØ|Ì�ÐJÌ ÐM Í Ì�ìÒÐ�á�è Í áQÇ¢ÐÕØ Í à|Ì�é Í ï Í è�Ð�ìZáO)O�Ô9Ïbì�ê6ì�Ì�Ð�ÅWáOìÒÐ"ó$±T Ûë ô ü é�ÓZØ Í Ä9Ï�á�à}Ì�à9êNM6ê×нÈ�ÐÕØ}Ì Ð�è9áOè Í áQÇ¢ÐÕØ Í ÅþáObO Ô9ÏbìZê6ìÌ�Ð�ÅWáOìÒШë ÷ ó$±g Ûë ô ü é3ÓZØ9ênì�O á�è]O¡M6Ô}é Í ìãÐ�Ø Í Ä9Ï�ágáQÇÔé°�á�Ð Í ÐÕØ|Ì�ÐkÐÕØ Í ÌPM×ÓOá�Ï�êqÐ�Ø"Ÿê6ì Ø Ô9ê×Ð ÍZÍ P�O�ê Í è�Ð,z ê×Ð�ÏÕÔ}è}ìkê×è�ÐÕê�Å Í Ä|á�MNÈ.ó$� d ± ô î K Ø9ê�M Í Ð�Ø Í O áQé Í)K á�Ïbé¨Ø|Ì�ìEM Í è9Ó Ð�Øö ò � ¸¸ ø K Ø9ê~ObØ&O�á�Ô"Mné�à Í"Í¡U Ä|áOè Í è�Ð�ê6ÌPMNM�ÈVMnÌ Ï�Ó Í Ï^é : Ç8O áOÔ9Ï�ì Í î ê×ÐJéQá Í ì�è9á Ð�Ï Í O�á�ï Í ÏZÌPMNM.ÐÕØ Í O�áQé Í)K á�Ïbé�Ì Ð�á�è`O Íz ÐÕØ9ênì�ênìMìÕê�Å�Ä`MNÈ�ê�ÅjÄ|á�ìÕìÕê6à"M Í ê6èúÐ�Ø9ê6ìgÅ�Ô`ObØ�Ð�êNÅ Í *,à9ÔQЭê×Ð�OVÌ èaÏ Í O á�ï Í ÏJÌ�è�È�O�á�áOÏ�é9ê×è}Ì Ð Í áQÇ?Ð�Ø Í O áQé Í)K á�Ïbéê6è�ìÕÔ`ObØvÐÕê�Å Í é�ßäØ Í è KãÍ Ç�á�ÏÅ�ÌQM�MNÈ�é Í ìO Ï�ê×à Í ÐÕØ Í ÅWáQé Í M�ê6è K Ø9ê~ObØ�Ð�Ø Í ÌQM6Ó�áOÏÕê×ÐÕØ"Å K á�ÏÜQì î KãÍTK êNM�M�Ç�áO Ô}ìZáOèÐÕØ Í ì Í ÌOì5Ä Í O Ð�ì�Ì�è}é­Ð�Ø Í è�Ç�á�ÏÅ�ÌQM�MNȨé Í ìO Ï�ê×à Í Ð�Ø Í Ï Í ìÕÔ"MqÐká�à9Ð�Ì ê6è Í é�ìÕá�Ç^Ì�Ï^éu�9áOÏkè9á K î KãÍtK ê�MNM9ì�Ì�Ð�ê6ì5ǢȨáOÔ9Ï�ì Í M6ï Í ìK ê×ÐÕØ�×ÖÔ}ìÒÐ�Ì è�ê×è"Ç�á�ÏÅWÌPM�Ô9è}é Í Ï�ìÒÐ�Ì�è}éQê6è9ÓWáQÇ,ÐÕØ Í Ï Í ìÕÔ"M×Ð^é�Wï���� ~B( §�!��JÙv����û�k©��«��!�!��"!,Ü|���"!�!����ã�k �4� ��¦¨§�¦¨¤��¥Vb���ß Í è9á K é Í ìO Ï�ê×à Í êné Í ÌOìkÐÕØ}Ì ÐtO�Ì�èWà Í ÌPÄ"Ä"M6ê Í é4ÐÕá­ê�ÅjÄ9ÏÕá�ïgê6è9ÓMÐÕØ Í�Í Ï�ÏÕáOÏ Ð O áOÏÕÏ Í O ÐÕê6á�è%OVÌQÄ}Ì�à9êNM6ê×нȨáQÇ�ÐÕØ Í ìÒê�ÅjÄ"M ÍÌQM6Ó�áOÏÕê×ÐÕØ`Å�é Í ì�O�ÏÕê6à Í é�ê6è�ÐÕØ Í Ä9Ï Í ïgê×áOÔ}ì�ì Í O ÐÕê6á�èoé�ÓZØ Í"Í ÏÕÏ�á�Ï Ð O�á�Ï�Ï Í O�Ð�ê×áOè�O�ÌPÄ}Ì à}êNM6êqнÈ&O á�Å Í ì�Ì ÐMÌ�Ä}ÏÕê~O Í w�ÓZØ ÍÏ ÍbØ Ô9ê6Ï Í Å Í è�ÐZáOè�Ð�Ø Í R Í M6é�ìÕêNÆ Í è}á K Ó�á Í ìZÔ"Ä î Ì�è}é�Ð�Ø Í ÌQM6Ó�áOÏÕê×ÐÕØ`ÅWìãÓ Í Ð�ì�M×ê6Ó�Ø�Ð�M�ȦÅWá�Ï Í O á�Å�Ä`M×ê~O�Ì Ð Í éoéÓ,á�ÅWá Ð�ê×ï�Ì Ð Í ÐÕØ Í à}ÌOìÒê~O�ê6é Í Ì�à Í Ø9ê×è|é�Ð�Ø Í êNÅjÄ9Ï�á�ï Í Å Í è�Ð î M Í Ð­Ô}ìTM6á�á�Ü�à}ÌPO�Ü�Ð�á�Ð�Ø Í Ï Í Ì�ìÕá�è K Ø�È�Ð�Ø ÍWÍ Ï�ÏÕáOÏO áOÏÕÏ Í O ÐÕê6á�è¦OVÌQÄ}Ì�à9êNM6ê×Ð½È K Ì�ìãìÒá%M×á K ó A óÖë � ± ôÕô ê6è�Ð�Ø Í ÌPM×ÓOá�Ï�êqÐ�Ø"Å´áQÇ.Ð�Ø Í MnÌ�ìÒÐãì Í O ÐÕê6á�èoéuÓZØ Í Ï Í Ì�ìÕá�è KãÍ M6áOìÒÐãìÕáÅ"Ô]ObØ K ÌOì�ÐÕØ|Ì�Ð KãÍ Ï ÍbØ Ô9ê6Ï Í é�ÐÕØ}Ì Ð ±T  ë Ø Ô Í ÏÕê Í ì�á�è�Ì�ÏbÌ è|éQáPÅHM×ê6è Í Ð�Ø9Ï�á�Ô9ÓOØ�úìÒØ9áOÔ"Mnéy·�´�´}à Í"Í ÏÕÏ�á�Ï Ð Ç�Ï ÍVÍ éÓ,áMê�ÅjÄ9Ï�á�ï Í ÐÕØ Í Ä Í Ï�Ç�á�ÏÅ�Ì è`O Í î KãÍ�K êNM�M"Å�ÌQÜ Í Ì�Ç Í)K Å4áOÏ Í�Ø Ô Í ÏÕê Í ì î à9ÔQÐ?ÐÕØ Í èWÌPMNM6á K Ç�áOÏkÐÕØ Í Ä1áOì�ìÕê×à9ê�M6êqнÈ"ÐÕØ}Ì ÐÌjÇ ÍbK Ì è}ì KÑÍ Ï�ì�Ì Ï Í ê×è`O�á�Ï�Ï Í O�ÐÐé�ÓZØ Í Ä1áPM�È�è}áPÅWê6ÌPM� Ê ½ K ê�M�M�Ð�Ø Í è�à Í Ð�Ø Í Ä1áPM�Ègè9áPÅWênÌQM.Ð�Ø}Ì�Ð9�ÒÔ}ìÕÔ}ÌPMNM�È���Ì Ó�Ï Í�Í ìK ê×ÐÕØ�ÐÕØ ÍVØ Ô Í Ï�ê Í é�ï ÌPM×Ô Í ìMz'Ð�Ø9ênì?Ä1áPM�È�è}áPÅWê6ÌPMxO�Ì�è�à Í Ç�áOÔ9è}é�à�ÈaÌ L�ÍVÍ é Ð h á�M×á�Å4áOè\é Í O�ágé9ê×è9Ó�ìÒÐ Í Äoé�ÓZØ ÍègÔ"Å"à Í ÏMáQÇ Ø Ô Í Ï�ê Í ì�ÐÕØ|Ì�ÐMÐÕØ Í ÌQM6Ó�áOÏÕê×ÐÕØ"Å Å�ÌQÜ Í ì�O�Ì èúà Í ï�Ì Ï�ê Í é�é Í Ä Í è|éQê×è}ÓváOè�ÐÕØ Í ÏbÌ�Ð Í áQÇ Í ÏÕÏ�á�Ï KÑÍ�K ê6ìÕØÐÕá�O áOÏÕÏ Í O Ð î ÐÕØ Í ÏÕÔ}è�ÐÕê�Å Í�KãÍ é Í ìÒê6Ï Í î Ì è}éWÐ�Ø Í R Í Mné�ìÕêNÆ Í ékß Í�K ê�MNM�ì Í ÐãÐÕØ9ênì?ègÔ"Å�à Í Ï î ìÕáPÅ Í)K Ø|Ì�ÐãÌ�ÏÕà}êqÐ�Ï�Ì�ÏÕê�MNÈ îÐÕá�(}ó$±g Ûë ô Ì�è}é�é Í ÅWá�è|ìÖÐ�Ï�Ì Ð Í ÐÕØ Í­Í � Í O�ÐÐé�ß Í Ð�Ø�Ô|ì�Ó Í ÐãÐ�Ø Í ÌQM6Ó�áOÏÕê×ÐÕØ`Ååà Í M×á K w¼ \�Z _ -g� X � �Mô � X�1 -2� X�_ 5� ��� X 3,5 : Ï�Ì�O¡M Í Ì�O)O Í ì�ìãÐÕá [ w eò � ° e � é ® á�ê6èOÐ�� ± e ò � Ì è|é�Ä|Ì ÏbÌQÅ Í Ð Í Ï;±Fé«T_ -]\�� � X 5 ÓZØ Í Ï Í�Í¡U ê6ìÒÐ�ì�ÌWé Í Ó�Ï Í�Í ±�Ä1áPM�Ègè9áPÅWênÌQM���w�e ò � ° e}��ìÒÔ]ObØ�Ð�Ø}Ì�Ð ü õ ü ó�� d [ ô ¥ øÏ�� é� - � 0�5 : ÔQÐ�Ä}ÔQв�,ó4� ô é/2-bX ZÑzb5 ® ê~O�ÜSð��eò � Ì�Ð�Ï�Ì�è}éQá�ÅGÌ è}é�M Í Ð ¨ õ ¨�� õ é/2-bX Z�ÒC5 � Í Ð � Ï d)aba)aBd � � ý ¸ � Ï ÿ à Í éQê6ìÒÐÕê6è`O Ð Í M Í Å Í èOÐbì;áPÇ1e � ÷ É � Î2é��9áOÏ Ë3±{Ì (9ó4±8 �ë ô Í î M Í Ð ¯ n õ [ ó$��  � n ð ô é

ë ( Ð ë T c

Page 139: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

/2-bX ZÖ��� �¢ê×è|é�Ì�é Í Ó�Ï Í�Í ±�Ô}è9ê×ï�Ì�ÏÕênÌ�Ð Í Ä1áPM�Ègè9áPÅWênÌQM � ìÒÔ`ObØvÐÕØ|Ì�Ð � ó � n ô?õ ¯ n Ç�á�Ï�Ì Ð�M Í Ì�ìÒÐ T ó$±T äë ô ObØ9á�ê~O Í ìáQÇ Ët±¨Ì (9ó4±g Ûë ô Í/é/2-bX Z��J5 : ÔQÐÄ9ÔQÐ � ó �Oô éó�M�MZìÖÐ Í Ä}ì¨Ì�à|á�ï Í Ì Ï Í�Í P¦O ê Í è�ÐÐéFHùè{Ä}Ì ÏÕÐÕê~O Ô"MnÌ Ï î h Ð Í Ä T O�Ì è\à Í�Í)UQÍ O Ô9Ð Í é�ê6è{Ä1áPM�È.ó$± ô ÐÕê�Å Í à�ÈaÔ|ìÒê6è9ÓúÌ�è�ÈÔ9è}ÌPÅ"à9ê6Ó�Ô}á�Ô}ì;é Í O áQéQê6è9Ó4ÌQM6Ó�á�Ï�ê×ÐÕØ"ÅYÇ�á�Ï;Ð�Ø Í Ä}ÏÕáOà"M Í Å´ìÕÔ`ObØ�ÌOì�ÐÕØ Í ß Í M�ObØ Ð ß Í ÏM Í Ü�ÌQÅjÄ�ÌQM6Ó�áOÏÕê×ÐÕØ`Å é Í ì�O�ÏÕê6à Í éê6è�Ì�Ä9Ï Í ïgê6á�Ô}ì�M Í O ÐÕÔ9Ï Í ékß Í ÐÕØgÔ}ì�Ó Í ÐZÐÕØ Í Ç�áPM�M×á K ê6è9ÓjÄ9Ï�áPÄ1áOìÕêqÐ�ê×áOèoé«T_ -Zc- � � - �@-83Öz"}�|5û ¼ \�Z _ -g� X � �Dô � X�1 -2� X�_^º�p�`������Ä|á�MNÈ.ó4± d � ô ����¶�� Ã* X \y\ � z}B|6m o � ² �)º��¢¹"�?·����bp¶��[�/�s��� ü õ ü ó [ d � ô ¥ øÏ�� �¢¹"�?·Q´ »��Qº�����¹¶~/ �s\�Zk0 X��Dô � X�1 -2� X�_�� p����p�s��,ó4� ô »8���¢¹j�[º��o�·o�¡��´�����µ&·��x´��·���� ø � ëT_ -�-8¾ óJìWê×è�ÐÕØ Í Ä9Ï�ágáQÇ�áPÇ � Í Å�Å�Ìwëy(Qé d KÑÍ é Í R|è Í î Ç�á�Ï Í ï Í ÏÈ ËV±ÞÌ (9ó4±�  ë ô Í î © n ÐÕá�à Í Ð�Ø Í�Í ï Í è�Ð� ¯ n �õ � Ê ½ ó � n ô �Qé�°�á Ð Í ÐÕØ}Ì Ð?Ç�á�Ï Í ï Í Ï�È Ë ÐÕØ Í Ä}ÏÕáOà}Ì à9ê�M6êqнÈaáQÇ;© n ênì Í)U Ì�O�ÐMNÈ ü é�°�á K M Í ÐI© à Í ÐÕØ Í�Í ï Í è�ÐÐÕØ|Ì�ÐI© n ênì­ÐÕÏ�Ô Í Ç�áOÏ%ÅWá�Ï Í ÐÕØ}Ì�è � ó$±� ÿë ô ObØ}á�ê~O Í ì¨áQÇ Ë é^ÓZØ Í Ä}ÏÕáOà}Ì à9ê�M6êqнÈúÐÕØ}Ì ÐI©$áO)O�Ô9Ï�ì%O�Ì è�à Í Ô"Ä"Ä Í Ïà1á�Ô9è}é Í é î Ô|ìÒê6è9Ó�®�Ì ÏÜ�á�ïU= ì�ê6è ÍbØ Ô}ÌPM×ê×Ð½È î à�È ü! óD(9ó$±% ÿë ôÒô � ó � ó$±? Bë ôÒô ¥´ë � T é�ÓZØgÔ}ì K êqÐ�Ø Ä}ÏÕáOà}Ì à9ê�M6êqнÈ�Ì ÐM Í Ì�ìÒÐ � � T Ïbém© éQá Í ì;è9á�ÐÑáO)O�Ô9Ï^éu°�á K�KãÍ è9á�Ð Í Ð�Ø}Ì�Ðãê�ÇJ© éQá Í ì?è9á Ðãá�ObO Ô9Ï î ÐÕØ Í è�� Ê ½ Ì ÓOÏ ÍVÍ ì K ê×ÐÕØ�ÐÕØ Í Ä|áOê×è�Ð�ìÉ�ó � n d5¯ n ôÞÊ�Ë�±£Ì óX(9ó4±T  ë ô Í/Î"á�è T ó$±� Ûë ô Ä1á�ê6è�Ð�ì�Ì�è}é�Ø Í è`O Í ê6ì�ÐÕØ Í Ô9è9ê Ø Ô Í ìÕáPM6ÔQÐÕê6á�è�ê6è h Ð Í Ä T é�ÓZØgÔ}ì�ê6èh Ð Í Ä&v KÑÍ áOÔQÐ�Ä9Ô9в� Ê ½ ó ��ô?õ �¢ó$� ô K ê×ÐÕØ&Ä9Ï�á�à|Ì à9ê�M×ê×нÈ�Ì�Ð�M Í ÌOìÖÐ � � T éÓZØ Í êné Í ÌOìZê×è�Ð�Ø Í ÌQM6Ó�áOÏÕê×ÐÕØ`ÅâÌ à1á�ï Í O�Ì�èvà Í Ä9Ô}ìÕØ Í é�Ç�Ô9ÏÕÐÕØ Í Ï�Ð�á�Ó Í Ð�Ì�è�ÌPM×ÓOá�Ï�êqÐ�Ø"Å�O�á�Ï�Ï Í O�ÐÕê6è9ÓWÌQM�ÅWáOìÒÐ Ïø áQÇÍ Ï�Ï�á�ÏZÐÕØ}á�Ô9ÓOØvÐ�Ø9ênì�Ï ÍbØ Ô9ê6Ï Í ì�ìÒá�Å Í�K á�ÏÜúóXÌ è}é^Ç�Ô9ÏÕÐÕØ Í Ï�Ï Í ìÒÐÕÏ�ê�O ÐÕê6á�è}ìZáOè�ÐÕØ Í ÏbÌ�Ð�ê×á�áPÇ Û Ð�áq± ô é�ê�á KÑÍ ï Í Ï î KãÍK á�è2= Ð�é Í ìO Ï�ê×à Í ÐÕØ Í é Í ÐbÌ ê�M6ì^éNHùè}ìÖÐ Í ÌOé KãÍ ÅWá�ï Í á�è�ÐÕá4ÐÕØ Í Ð�Ì�ì�Ü�áPÇEM6ê6ìÒÐ Ð é Í O áQéQê6è9ÓFé�Wï���} ' ���.� ÝÞ������������ 'Þ¥ ���"!;b��©�(® Ì ÏÕÐ�áQÇ¢ÐÕØ Í Ï Í Ì�ìÕá�è K Ø�È�ÐÕØ Í ÌQM6Ó�á�Ï�ê×ÐÕØ"Å�ì�Ç�Ï�áPÅâÐ�Ø Í Ä9Ï Í ïgê6á�Ô}ì�ì Í O ÐÕê6á�è�O áOÔ"Mnévè}á Ð�O áOÏÕÏ Í O ÐZÐÕágá�Å�Ì è�È Í ÏÕÏ�á�Ïbìênì­ÐÕØ|Ì�ШÐ�Ø Í È�è Í ï Í Ï Í)U Ä"M×áOêqÐ Í é�Ð�Ø Í Ì à}êNM6êqнÈúÐÕáqM6ênìÖÐ Ð é Í O áQé Í Ð�Ø Í�L�ÍVÍ é Ð h á�M×á�Å4áOè¨O�áQé Í ìvó�ê6è h Ð Í Äyv ô éDH$Ç KãÍéQêné î KãÍgK á�Ô`M6é�à Í Ì à`M Í ÐÕá�R}è|éVÄ1áPM�Ègè9áPÅWênÌQMnì K ê×ÐÕØ^Å"Ô]ObØ�ì�Å�ÌQM�M Í ÏZÌ�Ó�Ï Í�Í Å Í è�Ð K ê×ÐÕØ [ á�è�Ì è�È�Ó�ê6ï Í èVM6ê×è Í ¨ éê�á KãÍ ï Í Ï?ÐÕØ9ênìZéQá Í ìÕè2= Ð�ìÕÔQP¦O Í ÐÕáWìÒá�M×ï Í ÐÕØ Í M6ênìÖÐ Ð é Í O áQéQê6è9Ó%Ä}ÏÕáOà"M Í ÅñÇ�á�Ï L�Í�Í é Ð ®�Ô"M�M Í Ï�O�áQé Í ì^ékßäØ}Ì�Ð�ìÒØ}á�Ô"MnéKãÍ éQá K ê×ÐÕØ�Ì�M6ê6ìÒÐ�áPÇkÔ}è9ê×ï�Ì�ÏÕênÌ�Ð Í Ä|á�MNÈgè9á�Å4ênÌQMnìZÐ�Ø}Ì�ÐJÌ�Ó�Ï Í�ÍTK ê×ÐÕØ [ á�è ¨ N¨ê�á K éQá KãÍ R}è|é�á�ÔQÐ K Ø}ê�ObØ�á�è Íênì�ÐÕØ Í Ä|á�MNÈgè9á�ÅWê6ÌPM��$�8�ONYHùè&Ç^ÌPO Ð î O�áPÅ Í ÐÕá�ÐÕØ9ê6è"Ü�áQÇ�êqÐ î K Ø|Ì�Ð�ênì²�1NlHùè�Ä}Ï Í ï�ê6á�Ô|ì�ì Í O�ÐÕê6á�è|ì²� K Ì�ì�Ô9è}ê Ø Ô Í MNÈì�Ä Í O êNR Í é�Ì�ìJÐ�Ø Í è Í Ì�Ï Í ìÖÐTÄ1áPM�È�è}áPÅWê6ÌPM�ósO�ágé Í)K á�Ïbé ô Ð�á�ÐÕØ Í Ç�Ô9è]O�ÐÕê6á�è [ ó=ÐÕØ Í Ï Í O Í ê6ï Í é�ï Í O�Ð�á�Ï ô éj°�á K ÐÕØ}Ì ÐKãÍ Ì Ï Í Ø}áPÄ9ê6è9Ó�ÐÕá�Ä Í Ï�Ç�á�ÏÅeM6ênìÖÐ Ð é Í O áQéQê6è9Ó î ÐÕØ Í Ï Í ênì¨Ì&M6ê6ìÒШáQÇ�Ä1áPM�È�è}áPÅWê6ÌPM6ì­ÐÕØ}Ì Ð%O á�Ô`M6é�Ø}Ì ï Í Ð�Ø Í é Í ìÒê6Ï Í éÌ ÓOÏ ÍVÍ Å Í è�ÐÐé�H Ð�ì Í�Í ÅWìÑÐ�Ø}Ì�Ð KãÍ OVÌ è�è9ájM×áOè9Ó Í ÏZÔ}ì Í Ð�Ø Í �ÒÏ Í O áOè}ìÒÐÕÏ�Ô`O�Ð�ê×áOè¦Ä9Ï�á�à"M Í Å���ósO á�ÅjÄ9ÔQÐ Í Ð�Ø Í ï�ÌQM6Ô Í áQÇÐÕØ Í è Í Ì�Ï Í ìÖÐ�Ä1áPM�È�è}áPÅWê6ÌPM.Ì�Ð�ìÕáPÅ Í R UQÍ é^Ä|áOê×è�Ð�� ± eò � ô Ð�á�ìÒá�M×ï Í Ð�Ø Í é Í O áQéQê6è9ÓjÄ9ÏÕáOà"M Í Å©éÓ,Ô9ÏÕè|ìJáOÔQЭá�è Í O�Ì�èaì�ÌQM6ï�Ì Ó Í ÐÕØ9ênìTÄ}Ì ÐÕØaÌQÇ=Ð Í Ï¨ÌQM�M?é%ÓZØ Í�K Ì1È KÑÍ = M�M�éQávÐÕØ9ênì�ê6ì�à�È&Ç�áO Ô|ìÕìÕê×è}ÓváOèúá�è Í áPÇ?ÐÕØ Íì�Ä Í O êNR]O�Ä|á�MNÈgè9á�Å4ênÌQMnì���ÐÕØ}Ì Ð¨ê6ìTO¡M6áOì Í ÐÕá [ î Ì è|éúà�È�ÓOê×ïgê6è9Ó�Ì�ì�Å�ÌQM�M;ÌQÅWá�Ô9è�Ð�áQÇZÌ�é9éQê×ÐÕê6á�è|ÌQM�ê6èÇ�á�ÏÅ�Ì�ÐÕê6á�è îO�ÌPMNM Í é�· ² �b�^_�� î Ð�Ø}Ì�ШìÕÔQP¦O Í ìMÐÕá�ì5Ä Í O�ê�Ç¢ÈúêqЭÔ9è9ê Ø Ô Í M�ÈséWß ÍjK êNM�MkÐÕØ Í è�Ó�ê6ï Í ÌvÏ Í O�á�è}ìÒÐÕÏ�Ô`O ÐÕê6á�èqÄ9Ï�áO Í éQÔ9Ï Í Ð�áO á�ÅjÄ9ÔQÐ Í ì��,ó4� ô Ó�ê6ï Í èY��éjß�È�ï�Ì ÏÈ�ê6è9ÓvÐÕØ Í ÌOéQïgê�O Í î KãÍ = MNM¢Ð�Ø Í è�à Í Ì�à"M Í Ð�á�O áPÅjÄ9Ô9Ð Í ÌQM�MkÐÕØ Í Ä1áPM�Ègè9áPÅWênÌQMnìO¡M6áOì Í ÐÕá [ éh á K Ø}Ì Ð?ênì�ÐÕØ Í Ì�éQïgê~O Í Ð�Ø}Ì�Ð KãÍ = M�M}Ô}ì Í ÐÕá"ì�Ä Í O êNÇ¢ÈX�1N9H Ð;Ð�Ô9ÏÕè|ì;á�Ô9Ð�ÐÕØ Í ï�ÌPM×Ô Í áQÇ���Ì�Ð?áOè Í î Ï�Ì�è}éQá�Å�M�È�ObØ}áOì Í èÄ1á�ê6èOÐ¢ð ± eò � î ì�Ä Í O êNR Í ì?ê×ÐÑÔ9è}ê Ø Ô Í MNÈ î Ä}ÏÕá�ïgêné Í é Û ênìtM6Ì�ÏÕÓ Í�Í è9áOÔ9Ó�Ø�Ï Í MnÌ�Ð�ê×ï Í Ð�á ü Ì è|éq±FéÄóJìÑÔ|ìÒÔ}ÌPM î K Ø Í è�ê×Ð

ë ( Ð ë T n

Page 140: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

O á�Å Í ìZÐ�á¦M×ênìÒÐ Ð é Í O�ágé9ê×è9Ó�êqÐMê6ì�Å4áOÏ Í ê6èÇ�áOÏ�Å�Ì�Ð�ê×ï Í ÐÕá�Ç�áO�Ô}ì�áOè�ÐÕØ Í ÌQÅWá�Ô9è�Ð�áPÇ;Ì Ó�Ï Í�Í Å Í è�Ð�Ï�Ì ÐÕØ Í Ï�ÐÕØ}Ì�è�ÐÕØ ÍÌQÅWáOÔ9è�ÐZáPÇké9ê6ì�Ì ÓOÏ ÍVÍ Å Í è�ÐZà Í Ð KÑÍVÍ è [ Ì�è}évÐÕØ Í Ä1áPM�Ègè9áPÅWênÌQM���é3p Í R|è Í#" ó [ d á ô?õ ® Ï ý%$ þ ÿ � Ì [ ó¢r ôÑõ á�ó¢r ô Í.Ð�áà Í Ð�Ø Í ·)»Pº����¡¶��)�`��à Í Ð KÑÍVÍ è [ Ì è}éVá é¢ß Í ìÖÐbÌ ÏÕÐ K ê×ÐÕØ�ÐÕØ Í Ç�á�MNM6á K ê×è}Ó4ìÕêNÅjÄ"M Í Ä9ÏÕá�Ä|á�ìÒê×ÐÕê6á�è�ÐÕØ}Ì Ð�Ä}ÏÕá�ï Í ì?ÐÕØ}Ì ÐÐÕØ Í ï ÌPM×Ô Í áPÇkÌ�Ä1áPM�Ègè9áPÅWênÌQM.Ì�Ð�Ì4ÏbÌ è}é9áPÅ Ä1á�ê6èOÐ�ì�Ä Í O êNR Í ì�êqÐ�Ô}è9ê Ø Ô Í MNÈ î Ó�ê6ï Í èvÌWè Í Ì Ï�à�ÈjÇ�Ô9è`O�Ð�ê×áOè [ é«T_ -Zc- � � - �@-83Öz"}�|nu Æ��)�8� Ï dba)a)a�d � c ���j·V´��~�����5¼%·�´�´8���-�1·Qº��s·��-� ² �$»Qº��X±V�`��´�µ��:��¶��s·�´@�������¡º�e|�L�)·��/�~�¢¼�µ�����»" ó [ d á ô Ï " À ÃEÎs¼ " Ï   � ± � Û �E�¢¹"�)�� ¥ � � " ·Q� ² »8���¢¹?�[º��o�·o�¡��´�����µV·Q�3´N��·1����ë ÷ ö c ø ø ó ¸ � ô Ï ë ÷ ø ¸& é � �����)ºg�¢¹"�_�¹"���^_��j�½¼'� ± eò � �����~�T�¢¹"�4_�·1�)�%��¹`·�����¹`���)��� p`�)�1_����½¼%�)´N�)¶j�)�`��� í � Ï ó�� ô d)aba)aBd � c ó�� ô ï ·�º��·Q´�´ ² �~���/���1_)�$ëT_ -�-8¾ ÓZØ Í R}ÏbìÒÐ%Ä}Ì ÏÕШáQÇZÐ�Ø Í Ä9Ï�áPÄ1áOìÕê×ÐÕê6á�è î O¡MnÌ ê�ÅWê×è9Ó� §¥ � � " ênì�×ÖÔ|ìÖÐ4Ï Í O�ÌQM�M6ê×è9Ó�Ð�Ø Í)( á�Ø9è|ìÒáOè�à1á�Ô}è}éÇ�Ï�áPÅâÌ�Ä9Ï Í ïgê×áOÔ}ì�M Í O�ÐÕÔ}Ï Í éuÓZØ Í ì Í O�á�è}éVÄ}Ì ÏÕÐtÇ�á�MNM6á K ìtÇ�ÏÕá�ÅâÌ è�ÌQÄ"Ä"M6ê~O�Ì�Ð�ê×áOè�áPÇ.ÐÕØ Í Ô9è}ê×áOèvà1á�Ô9è|é�Ð�á"Ð�Ø Í ö c ø øÄ1áOì�ìÒê6à"M Í �Õà}Ì�é� Í ï Í è�ÐbìX© n+* î ëV¥ Ë ¤-, ¥Ñ î K Ø Í Ï Í © n.* ê6ìMÐ�Ø ÍWÍ ï Í è�Ð9�4� n ó�� ô­õ � * ó�� ô �Qéj°�á�Ð Í ÐÕØ}Ì Ð\© n+*áO)O�Ô9Ï�ì K ê×ÐÕØ&Ä9Ï�á�à|Ì à9ê�M×ê×нÈ�Ì�Ð�ÅWá�ìÖÐ�± � Û ó�à�È�ÐÕØ Í � h ObØ K Ì ÏÕÐ�ÆW� Í ÅjÅ�Ì�� ô éh á�ÐÕØ9ênì�ÅWá ÐÕê6ï�Ì�Ð Í ì?ÐÕØ Í Ä"MnÌ è�áPÇ.ÐÕØ Í è Í)U ÐZÌPM×ÓOá�Ï�êqÐ�Ø"Å©é¢ß ÍgK êNM�M�Ì�ì�ìÒÔ"Å Í ÐÕØ}Ì Ð KãÍ Ì�Ï Í Ó�ê6ï Í è�á�è Í Ô}ì Í Ç�Ô"M:Ä9ê Í O ÍáQÇ�ê6èÇ�á�ÏÅ�Ì�Ð�ê×áOè�z è}ÌPÅ Í MNÈaÐÕØ Í ï�ÌQM6Ô Í áPÇN�wÌ�Ð�áOè Í ó�ÏbÌ è|éQáPÅjM�ȨObØ9á�ì Í è ô Ä1á�ê6è�Ð/� ± eò � é h Ì1È9�,ó�� ô�õ10 é°�á K ìÕÔ"Ä"Ä1áOì Í�KãÍ�K ênìÒØ�ÐÕá�Ï Í O�á�è}ìÒÐÕÏ�Ô`O ÐMÐ�Ø Í ï�ÌQM6Ô Í áQÇN� Ì�Ð�� ± eò � é�ß Í¦K ê�MNM Í¡UQÍ O�ÔQÐ Í Ð�Ø Í ÌQM6Ó�áOÏÕê×ÐÕØ"Å áQÇÐÕØ Í Ä9Ï Í ïgê6á�Ô}ìJì Í O�Ð�ê×áOè}ìJÌ�è}é�Ä9ê~O�Ü�̦M6ê×è Í ¨ Ð�Ø9ÏÕáOÔ9Ó�Øj�oé h Ô"Ä"Ä1áOì Í%KãÍ Ì Ï Í Ç�áOÏÒÐ�Ô9è}Ì Ð Í"Í è9á�Ô}Ó�Ø�Ð�Ø}Ì�Ð!�VM6ê Í ì�áOè¨ é;Hùè�Ð�Ø9ê6ìgO�ÌOì Í î ÓOê×ï Í è�Ì�M6ê6ìÒÐJáPÇ8Ä|á�MNÈgè9á�Å4ênÌQMnì � Ï dba)abaBd �]c ÐÕØ}Ì ÐJØ}Ì ï Í è9á�è Ð ÐÕÏ�ê6ï�ênÌQM¢Ì ÓOÏ ÍVÍ Å Í è�Ð K ê×ÐÕØ [ á�è ¨ îKãÍ O�Ì è�é Í Ð Í Ï�ÅWê6è Í?K Ø9ê~ObØ�á�è Í ê6ìL� Ê ½ à�È^O áOè}ìÒêné Í ÏÕê6è9ÓWÐÕØ Í ï�ÌQM6Ô Í ì � n É��Î2étê�áPÄ Í Ç�Ô"M�MNÈ�Ð�Ø Í È�Ì Ï Í ÌQM�M�éQêi� Í Ï Í è�ÐÌ è|é�Ð�Ø Í è�ÐÕØ Í Ä|á�MNÈgè9á�Å4ênÌQM � n Ç�á�Ï K Ø9ê~ObØ � n É��"Î õ20 ênìN� Ê ½ é � n ɤ��Î�ênìãÐÕØ Í è�ÐÕØ Í ï�ÌPM×Ô ÍTKãÍ Ì Ï Í ì Í�Í Ü�ê6è9ÓIéuÓZØ Íá�è`MNÈVOVÌ�Ð�ObØvênìãÐÕØ}Ì Ð�Ì�ÏbÌ è|éQáPÅìM6ê6è ÍTK êNM�M.è9ájM6á�è9Ó Í Ï K áOÏ�Ü Ð ê×Ð�ê6ìZï Í ÏÈ�Ô9è"M6ê�Ü Í M�È�Ð�á�Ä|Ì�ì�ì?Ð�Ø9Ï�á�Ô9ÓOØ3�Fé�ß Í�K ê�MNMR U ÐÕØ}ê6ìÑà�ÈWé Í Ð Í Ï�ÅWê6è9ênìÖÐ�ê�OVÌQM�MNÈjÄ9ê~O�Ügê×è9Ó¨ÐÕØ Í M×ê6è Í ÐÕØ}Ì ÐtÄ}ÌOìÕì Í ì;ÐÕØ9Ï�á�Ô9ÓOØ4�9U3ÓZØ9ênìtÄ"M6Ì�è�ênì?ê�ÅjÄ"M Í Å Í è�Ð Í é�à Í M×á K îK ê×ÐÕØvìÕáPÅ Í áQÇ.Ð�Ø Í ìÒÐ Í Ä}ìÑà Í ê×è9ÓjO¡MnÌ Ï�êNR Í éjÇ�Ô}ÏÒÐ�Ø Í ÏÐé8ÓZØ Í ÌPM×ÓOá�Ï�êqÐ�Ø"Å´ê6ìãé Í ìO Ï�ê6à Í é�Ç�á�ÏZÌ�R UgÍ éVObØ9áOê�O Í áPÇ���Ì�è}éÌ�é9ï�ê~O Í 0 é3�9áOÏ�Ï Í Ì�ìÕá�è}ì?ÐÕá�à Í O¡MnÌ Ï�ê�R Í é�M6Ì Ð Í Ï î KãÍgK ê�M�M�ìÒê�ÅjÄ"M�ÈVO�ÌPMNM�Ð�Ø9ênì�Ì�ìÒÔ9à}ÏÕáOÔQÐÕê6è Í é*,� �(-�- � X�1 -2���$3¢+ �y½mð�_ - ½J- �$3 X6587 õ 9� ��� X 3,5 : Ï�Ì�O¡M Í Ì�O)O Í ì�ìãÐÕá [ Ì�è}é^Ä|áOê×è�Ð�� ± eò � é/2-bX ZÑzb5 � Í Ð�ð õ � ÷ ��Ì è|éVM Í Ð ¨ õ ¨�� õ é/2-bX Z�ÒC5 �9áOÏ � ± e � î M Í Ð ¯ ¾ õ [ ó4�%  � ð ô é/2-bX ZÖ��� �¢ê×è|éúÌQM�M�é Í ÓOÏ ÍVÍ ±�Ô9è9ê6ï�Ì Ï�ê6Ì Ð Í Ä|á�MNÈgè9á�Å4ênÌQMnì �[Ï d)a)abaBd � c ìÕÔ`ObØ�Ð�Ø}Ì�Ð � n ó � ô�õ ¯ ¾qÇ�á�Ï�Ì�ÐTM Í Ì�ìÒÐ & ø ÛObØ9á�ê~O Í ìÑáPÇ � ± e � é/2-bX Z��J5 H$Ç¢ÐÕØ Í Ï Í�Í¡U ênìÖÐbì�Ì4Ô9è9ê Ø Ô Í ê×è}é Í¡U Ët±¨Ì :Í,ìÕÔ`ObØvÐÕØ}Ì Ð � n É��Î õ:0 î á�ÔQÐÄ9ÔQÐ � n ó ��ô î Í M6ì Í á�ÔQÐÄ9ÔQÐ';%<�<>=?<]éß Í ìÒÐ�Ì�ÏÒÐ�à�È`è9á�ÐÕê~O ê6è9Ó Ð�Ø}Ì�Ð�ÌQM�M�ìÖÐ Í Ä}ì�Ì à1á�ï Í Ï�Ô9è ê×è�Ä1áPM�Ègè9áPÅWênÌQMJÐÕê�Å Í Ä9Ï�á�ïgê6é Í é`Ð�Ø Í Ä}Ì�Ï�ÌPÅ Í Ð Í Ï�ìvÌ Ï ÍÇ^Ì ï�áOÏ�Ì�à"M Í é²Hùè�Ä}Ì�ÏÒÐ�ê�O�Ô"MnÌ Ï î h Ð Í Ä T O�Ì�è�à ͨÍ)UQÍ O Ô9Ð Í é�ê6è�Ä1áPM�È�è}áPÅWê6ÌPM�ÐÕê�Å Í ÌOìÕìÕÔ"ÅWê×è}Ó & ø ç   ± � Û Ô}ìÕê6è9Ó�ÐÕØ Íê�Å�Ä}ÏÕá�ï Í éM��ê6ìÒÐ Ð é Í O áQéQê6è9Ó�ÌQM6Ó�á�Ï�ê×ÐÕØ"Å Ç�áOÏ L�Í�Í é Ð h áPM6áPÅWá�è^O áQé Í ì�Ç�ÏÕá�ÅþÌ�Ä9Ï Í ïgê×áOÔ}ì�M Í O�Ð�Ô9Ï Í é«T_ -Zc- � � - �@-83Öz"}�|�zg� ΢¼ " ç   vG± � Û ��¹`�¡�q�¢¹"�?��p�¡º��p�/���[�85'7 õ 9 º�p�"�T���L�/��¶���Ä1áPM�È.ó Û d � ô Ã@BA ;C<ED�F G�;IH h Ô9ÓOÓ Í ìÒÐZï Ì�ÏÕênÌ�Ð�ê×áOè}ìZáQÇ,ÐÕØ Í ÌPM×ÓOá�Ï�êqÐ�Ø"ÅGÌ�à|á�ï Í ìÕáWêqÐ�Ï�Ô9è}ìZê6è�ÐÕê�Å Í Ä1áPM�È.ó$± d Ï& d M6á�Ó Û ô é° Í)U Ð KãÍ Ì è}ÌPMNÈ�Æ Í ÐÕØ Í O�á�Ï�Ï Í O�Ð�è Í ì�ì�áQÇkÐ�Ø Í ÌPM×ÓOá�Ï�êqÐ�Ø"Å©éÑß Í ìÕØ9á K R}Ï�ìÒÐ�Ð�Ø}Ì�Ð�Ç�á�ÏJÌ�Ï�Ì�è}éQáPÅHÄ}Ì ê6Ï�ó�� d � ô î ÐÕØ ÍÌQM6Ó�áOÏÕê×ÐÕØ`ÅJ5 7 õ f ý 7 ÿ ênì�ï Í Ï�È%M×ê�Ü Í MNÈ­Ð�á­á�ÔQÐÄ9ÔQÐJ�¢ó$� ô ékß Í O�á�è`O)M×Ô}é Í ÐÕØ}Ì Ð�ÐÕØ Í Ï Í�Í)U ênìÒÐ�ì;ÌMï Í O�Ð�á�Ï��ó^ê×è�Ç^ÌPO Ð3ÅWáOìÒÐ

ë ( Ð ë)v �

Page 141: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

ObØ9áOê�O Í ì K á�Ô"Mné K áOÏ�Ü ô ìÕÔ`ObØ4ÐÕØ}Ì Ð�5 7 õ f ý 7Hÿ O á�Å�Ä}ÔQÐ Í ì;ÌTÇ�Ô9è`O ÐÕê6á�è�ï Í ÏÈ�O¡M6áOì Í ÐÕá���éuÓZØ9ê6ì?ê6ì?è9á Ð K Ø|Ì�Ð KãÍ�K Ì è�Ðz KÑÍ�K Ì�èOÐ�Ì èúÌPM×ÓOá�Ï�êqÐ�Ø"Å�ÐÕØ}Ì ÐMÌPM K Ì1ÈQì�O á�ÅjÄ9ÔQÐ Í ì,�légê�á KÑÍ ï Í Ï�ÐÕØ Í ÌQM6Ó�áOÏÕê×ÐÕØ`ÅWì�áQÇ�Ð�Ø Í Ä}Ï Í ï�ê6á�Ô|ì�ì Í O�Ð�ê×áOèO�Ì�èvè}á K à Í ÌQÄ"Ä"M6ê Í évÐÕá45 7 õ f ý 7Hÿ Ð�á�Ó Í Ð�ÌWÏbÌ è|éQáPÅWê�Æ Í évÌQM6Ó�áOÏÕê×ÐÕØ"ÅâÐÕØ}Ì Ð�O áPÅjÄ9Ô9Ð Í ìN�qO�á�Ï�Ï Í O�ÐMNÈ Í ï Í ÏÈ K Ø Í Ï ÍK ê×ÐÕØ�Ø9ê6Ó�Ø&Ä9Ï�á�à}Ì�à9êNM6ê×нÈsé8ÓZØgÔ}ìãÐÕØ Í Ç�á�MNM6á K ê6è9Ó�M Í ÅjÅ�Ì K ê�MNM.à Í?Ø Ô9ê×Ð Í ìÕÔQP¦O ê Í è�Ð�Ç�á�Ï�á�Ô}Ï�Ä9Ô9ÏÄ|á�ì Í ì[é* X \y\ � z}B|sz[z�� �Qº�·Q�`µ�Ô ç � �u��p �P�`�1�)� Û Ï ÏLK ý ¸ � Ï ÿ& é�M ·�� ² �y�~�?·g�`��´�µ��:��¶��s·�´�»8����¹L·)»Pº����¡¶��¡�]� " »8���¢¹ [ Ã� ¹"�)� �]¼¡�Qº%·¦º·�� ² ��¶Y�"·Q��º'� d � ± eò � ��5 7 õ f ý 7Hÿ ��p���1p���N�,ó$� ô »8���¢¹��[º����·��)��´����/µ^·���´N��·1���ãë ÷ Ô�ëT_ -�-8¾ óJìÑê6èVÄ}Ï Í ï�ê6á�Ô|ìxÄ9Ï�ágáQÇ^ì î KÑÍ é Í ìO Ï�ê6à Í ìÒá�Å Í à}ÌOé Í ï Í è�Ð�ìãÌ è|é�ÐÕØ Í è�O)M6Ì�êNÅ~Ð�Ø}Ì�Ð�êNÇ�è9áOè Í áPÇ.ÐÕØ Í à}ÌOéÍ ï Í è�Ð�ìJáO)O�Ô9Ï î Ð�Ø Í èúÐÕØ Í ÌQM6Ó�áOÏÕê×ÐÕØ`ÅN5PO õ f ý 7Hÿ áOÔQÐ�Ä}ÔQÐ�ì��,ó4� ô é : Ô}Ï�R|Ï�ìÒÐJà}ÌOé Í ï Í è�ÐW©HO�á�Ï�Ï Í ì5Ä1á�è}é}ì�ÐÕØ Í à}ÌOéÍ ï Í è�Ð�ì�áQÇuÄ9Ï Í ïgê×áOÔ}ì�Ä9Ï�á�áPÇ^ì î ê?é Í é î ÐÕá�Ä1ágá�Ï�Ì�Ó�Ï Í�Í Å Í è�ÐZà Í Ð KãÍ�Í èm��Ì è}é [ á�è ¨ é h Ä Í O�ê�R[O�ÌQM�M�ÈD©åênìZÐÕØ Í¨Í ï Í è�ÐÐÕØ|Ì�ÐY�4� Ì è}é [ Ø|Ì ï Í M Í ì�ì­ÐÕØ|Ì è " � � Ì ÓOÏ ÍVÍ Å Í è�Шá�è ¨ �Fé�ß Í è9á K é Í ìO Ï�ê×à Í Ð�Ø Í ì Í O�á�è}é�à}ÌOé Í ï Í è�Ðbwm� Í Ð� Ï d)aba)aBd �`c à Í ÌQM�M|Ô9è}ê×ï�Ì Ï�ênÌ�Ð Í Ä|á�MNÈgè9á�ÅWê6ÌPM6ì;ÐÕØ}Ì ÐãØ}Ì ï Í8" � � Ì ÓOÏ ÍVÍ Å Í è�Ð K ê×ÐÕØ [ Ê ½ éN� Í Ð�RBà Í ÐÕØ ÍJÍ ï Í è�ÐÑÐÕØ}Ì ÐÐÕØ Í Ï Í­Í¡U ê6ìÒÐ�ì�ÌjÄ}Ì ê6Ϩë�¥ Ë ¤Q, ¥� �ìÕÔ`ObØ�ÐÕØ}Ì Ð � n É��Î õ � * É��Î2é?ß Í ìÒØ9á K à Í M6á K Ð�Ø}Ì�Ð�êNÇ�è Í ê×ÐÕØ Í Ï ©~è9áOÏJRáO)O�Ô9Ï�ì î ÐÕØ Í è�Ð�Ø Í ÌQM6Ó�á�Ï�ê×ÐÕØ"Å15 7 õ f ý 7Hÿ áOÔQÐ�Ä9Ô9Ð�ìN�,ó4� ô é²�,Ì�Ð Í Ï KÑÍ Ó�ê6ï Í Ô"Ä"Ä Í ÏZà1á�Ô9è}é}ìZá�è�Ð�Ø Í Ä9Ï�á�à}Ì�à9êNM6ê×ÐÕê Í ìÑáQÇ©åÌ è|é�Ryé

l 0 � �s\ z"}B|sz"Ò Îs¼��:�¡���¢¹"�)º��½¼g��¹`�?�)�1�)�`����©Ý�QºZR �V_b_�pº��0�u�¢¹"�)�45 7 õ f ý 7Hÿ � p����p�s���,ó$� ô �������Q�1p��mëT_ -�-b¾ ÓZØ9ê6ìMênìMÏ Í M6Ì ÐÕê6ï Í M�È�ìÖÐ�Ï�Ì�ê×ÓOØOÐ�Ç�á�Ï K Ì�Ï�éoé h ê6è`O Í ÐÕØ Í�Í ï Í è�ÐW©þéQá Í ìJè}á ÐJáObO Ô9Ï î KÑÍ Ø}Ì ï ÍÐÕØ}Ì Ð?ÐÕØ Í Ä1áPM�Ègè9áPÅWênÌQMG� Ê ½ Ø}ÌOìÑÌ ÐtM Í Ì�ìÒÐ " � � Ì�Ó�Ï Í�Í Å Í èOÐ K êqÐ�Ø [ á�è�ÐÕØ Í M×ê6è Í ¨ éuÓZØgÔ}ìÑá�è Í áQÇ�Ð�Ø ÍÄ|á�MNÈgè9á�Å4ênÌQMnì � Ï dba)aba�d �]c O áPÅjÄ9Ô9Ð Í é�à�ÈR5 7 õ f ý 7Hÿ ê6è h Ð Í Ä T ê6ì�� Ê ½ é h Ì1È4ê×Ðãênì;Ð�Ø Í Ä1áPM�Ègè9áPÅWênÌQM � n éÓZØ Í è � n É��Î õ �,ó�� ô égßãÔQÐ�ìÒê6è`O Í ÐÕØ Í4Í ï Í è�ÐMR~éQêné�è9á�ÐJáO)O�Ô9Ï î KãÍ Ügè9á K ÐÕØ}Ì Ð � * É��Î��õ � n É��ÎÇ�á�Ï�Ì è�È�á Ð�Ø Í ÏZê6è}é Í)U , é3ÓZØ�Ô|ì � n ênìãÐÕØ Í Ô9è9ê Ø Ô Í Ä|á�MNÈgè9á�ÅWê6ÌPM�ì�Ì�Ð�ê6ì5Ç¢Ègê×è}Ó"Ð�Ø Í O áOè}éQê×ÐÕê6á�è�áPÇ h Ð Í ÄvWÌ�è}é�ÐÕØgÔ}ì h Ð Í Ä&vWÏ Í ìÒÔ`MqÐbìZê×è�ÐÕØ Í á�ÔQÐÄ9ÔQÐ � n ó �Oô;õ �¢ó$� ô él 0 � �s\ z"}B|sz��� ¹"���:º�����·o�¡��´����/µ��½¼��)���¡�]��©q�t�-·VÊ��¡�{�����¡º%��¹`�4_�¹"�Q�^_������½¼8�Õ·�� ² �C�t�~��·���¶��1���ö& � ëT_ -�-b¾ ÓZØ9ênìvênì�Ì�ìÕêNÅjÄ"M Í ÌQÄ"Ä`M×ê~O�Ì ÐÕê6á�èÛáPǨÐÕØ Í ìÑØ Í ÏÕè9á��¸à|áOÔ9è}é´ó^ì Í�Í R}Ï�ìÒÐ�M Í O ÐÕÔ9Ï Í ô é�ß�È® Ï�áPÄ1áOìÕêqÐ�ê×áOè�ë (ºé v î ÐÕØ Í Ä1á�ê6èOÐbìãáQÇ�ÐÕØ Í M6ê×è Í ¨ Ì�Ï Í éQê6ìÒÐÕÏ�ê6à9ÔQÐ Í é�Ô9è}ê�Ç�áOÏ�ÅjM�È4á�ï Í Ï?e�ò � Ì�è}é¦Ä|Ì ê6Ï K ênì Íê×è}é Í Ä Í è}é Í è�Ð^é : èvÌ�è�È�á�è Í Ä|áOê×è�Ð î ÐÕØ Í Ä9Ï�á�à}Ì�à9êNM6ê×нÈWÐÕØ}Ì Ð [ Ì�Ó�Ï Í�Í ì K ê×ÐÕØ)�vênì " éxÓZØ ÍMÍ¡U Ä Í O�Ð Í éè�Ô`Å"à Í Ï;áPÇ�Ì�Ó�Ï Í�Í Å Í è�Ð�ìkà Í Ð KãÍ�Í è [ Ì è|éW��á�è Û Ä}Ì ê6Ï K ê6ì Í ê×è|é Í Ä Í è}é Í è�ÐtÄ1á�ê6è�Ð�ì�ênì�Ð�Ø�Ô|ì " Û é8ÓZØ ÍÄ9ÏÕáOà}Ì à}êNM6êqнÈaÐÕØ|Ì�Ð"Ð�Ø9ênì�ègÔ"Å�à Í Ï4é Í ïgê6Ì Ð Í ì?Ç�Ï�áPÅ ê×Ð�ì Í¡U Ä Í O�ÐbÌ�ÐÕê6á�è�à�È�Ø}ÌPM�Ç�ÐÕØ Í�Í¡U Ä Í O�ÐbÌ�Ð�ê×áOè ó^ÌÏ Í Ø Ô}ê×Ï Í Å Í è�Ð�Ç�á�ÏZÐ�Ø Í­Í ï Í è�Ð�© ô ênì�à|áOÔ9è}é Í é�à�È ö& � él 0 � �s\ z"}B|sz�� � ¹"�T�[º��o��·��)��´�����µ¨�½¼��¡���)�`�ÑRI���-·VÊ��¡�S�Q�1�)ºj��¹`��_¹`���^_��^�½¼!�S·�� ² �U���~�¦·���¶��1���S ¸& é � �:�[º��� � ² � ² " ç �   ± � Û Ã«T_ -�-b¾ ÓZØ Í O¡MnÌ ê�Å K á�Ô`M6é�à Í á�àgïgê6á�Ô}ì î Ç�áPM�M6á K ê×è9Ó�ê�ÅjÅ Í éQênÌ�Ð Í M�ÈVÇ�Ï�áPÅ ® Ï�áPÄ1áOìÕêqÐ�ê×áOèaë (ºé6ë � î ê�Ç� K Ì�ì�ObØ9áOì Í è�Ð�á�à Í Ì�Ï�Ì�è}éQá�Å Ä1á�ê6è�ÐJáOèLM6ê×è Í ¨ Ì�Ç=Ð Í ÏJÐÕØ Í M6ê×è Í ê6ì�R UQÍ é�é�ßÑÔ9Ð�ÐÕØ}ê6ìMênìJè}á Ð�Ð�Ø ÍO�Ì�ì Í U : ÏZênì�êqÐ�NHùè"Ð�Ø Í�K Ì1È�Ð�Ø Í ÌQM6Ó�áOÏÕê×ÐÕØ`Ÿê6ì�é Í ì�O�ÏÕê6à Í é î �4Ì�è}éT�­Ì Ï Í ObØ9á�ì Í è%R|Ï�ìÒÐ;Ì è}é"ÐÕØ Í è ¨ ênì�é Í R}è Í é4à}Ì�ì Í éá�èvÐÕØ Í Å´é�ê�á KãÍ ï Í Ï KÑÍ O�á�Ô"Mné^Ä9ê~O�Ü ¨ Ì Ð�Ï�Ì�è}éQá�Å R}ÏbìÖÐ î Ì�ì�Ì��)�)��Ì è}évÐ�Ø Í èj��Ì è|é3��ÐÕá�à Í Ð K áÏ�Ì�è}éQáPÅ«óXéQênìÖÐ�ê×è`O Ð î Ì�ì�ìÒÔ"ÅWê6è9Ó ¨ ÐÕÔ9Ï�è}ì�áOÔQÐ�ÐÕá�à Í è9áOè Ð é Í Ó Í è Í Ï�Ì Ð Í ô Ä|áOê×è�Ðbì�á�è�êqÐ�MnÌ�Ð Í Ï^é�°�á�Ð ÍÐÕØ}Ì ÐÑÐ�Ø Í Ä1áPM�Ègè9áPÅWênÌQMnì � Ï d)a)aba�d �]c Ì Ï Í ÌPM×Ï Í ÌOéÈ KÑÍ MNM Ð é Í R}è Í é�áOè`O Í ÐÕØ Í M6ê×è Í ênì�ObØ9áOì Í è�ÌOìÑÌV�)�¡� î

ë ( Ð ë)v|ë

Page 142: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

K êqÐ�Ø9á�ÔQÐTR U ê6è9Ó�ÐÕØ Í Ä}Ì�Ï�ÌPÅ Í Ð Í ÏÕê�ÆVÌ ÐÕê6á�èoévósÓZØ Í ÈúÌ Ï Í è}á ÐgR UQÍ éaê×è�Ð Í Ï�Å�ìMáQÇÑÐÕØ Í ê×Ï?O�á Í P¦O ê Í è�Ð�ìb*à9ÔQÐ4ÐÕØ Í È�Ì Ï Í R UQÍ é�Ì�ì�Ç�Ô9è]O�ÐÕê6á�è|ì%Ç�Ï�áPÅ ¨ ÐÕáae|�ºé ô ÓZØ�Ô|ì"Ð�Ø Í Ä9Ï�á�à}Ì�à9êNM6ê×Ð½È î K Ø Í è KãÍ Ä9ê~O�ÜQ�Ì�ÐJÏbÌ è|éQáPÅ á�è ¨ ÐÕØ}Ì Ð � n É��Î õ � * É��"Î%Ç�áOÏMìÕáPÅ Í é9ê6ìÒÐÕê6è`O�ÐTÄ}Ì�ê×Ï Ë d , ê6ìMÌ�ÐTÅWáOìÒÐ S ¸& é � ó^ÌPÄ"Ä"M�È�ê6è9Ó® Ï�áPÄ1áOìÕêqÐ�ê×áOèaë (ºé6ë � ê×è�Ð�Ø Í Ô9è9ê6ï�Ì Ï�ê6Ì Ð Í OVÌ�ì Í�K êqÐ�Ø�Ì Ó�Ï Í�Í Å Í è�Ð�ì Í Ð�ÐÕá " � � ô é�ÓZØ Í O)M6Ì�êNÅ�Ç�áPM�M×á K ì^é

ß Í Ì Ï Í è9á K Ï Í Ì�éÈJÐÕá�ÓPM6Ô Í ÐÕáOÓ Í Ð�Ø Í Ï�ÐÕØ Í Ä9ÏÕágáPÇgáPÇgÐÕØ Í M Í Å�Å�ÌFé�ß Í3K êNM�M�Ä9ê�O�Ü Û M6Ì�ÏÕÓ Í�Í è9áOÔ9Ó�Ø­ìÕá�ÐÕØ|Ì�Ð.Ð�Ø Í Ð K áÍ ï Í è�Ð�ì¢Ì à1á�ï Í Ø}ÌQÄ"Ä Í è K êqÐ�Ø%Ä9Ï�á�à|Ì à9ê�M×ê×нÈ�Ì�ÐuÅ4á�ìÖÐNÔ � � Í ÌPObØoéEÓZØ�Ô|ì KãÍ Ó Í Ð,ÐÕØ Í O áOè}éQê×ÐÕê6á�è Û Ï Å�Ì U É S& M d Ï�K ¸& é M Î�éÓ,á¦Å�ÌQÜ Í Ð�Ø9ênì�ìÕêNÅjÄ"M Í Ï KÑÍ ì Í Ð Û Ï Ï�K ý ¸ � Ï ÿ& é M é : è`O Í�KãÍ Ø}Ì ï Í ÐÕØ9ênì�O�á�è}éQê×ÐÕê6á�è KãÍ R}è}é�ÐÕØ}Ì Ð�ÐÕØ Í Ä9ÏÕáOà}Ì à}êNM6êqнÈÐÕØ|Ì�Ð�©~á�Ï�R áO)O Ô}Ï�ìZênì�Ì�Ð�ÅWáOìÒÐ�Ô�Ì�è}é K ê×ÐÕØ�Ð�Ø Í Ï Í Å�Ì ê6è9ê×è}Ó�Ä}ÏÕáOà}Ì à9ê�M6êqнÈU5 7 õ f ý 7Hÿ á�ÔQÐÄ9ÔQÐ�ì²�,ó$� ô é°�á KHKÑÍ é Í ì�O�ÏÕê6à Í ÐÕØ Í ÌPO ÐÕÔ}ÌPM�M6ê6ìÒÐ Ð é Í O�áQéQê×è}Ó�ÌPM×ÓOá�Ï�êqÐ�Ø"Å©é�ÓZØ Í ÌQM6Ó�á�Ï�ê×ÐÕØ"Å«ìÕêNÅjÄ"M�ÈSÄ}ê�O�ÜQì�ÌÕO á�MNM Í O ÐÕê6á�è áQÇÏbÌ è}éQá�Å Ä|áOê×è�Ð�ìV��Ï d)aba)a�d � Í = ìJÌ�è}é Í è�Ô`Å Í Ï�Ì Ð Í ì�ÌQM�MEÄ|á�ìÕìÕê×à`M Í ObØ9á�ê~O Í ì�áPÇ 0S± e � Ç�á�Ï��,ó�� n ô é�H ÐJÐÕØ Í èaÌQÄ`Ä"M×ê Í ìÐÕØ Í ÌQM6Ó�á�Ï�ê×ÐÕØ"Å ¼ \�Z _ -g� X � �Mô � X�1 -J� X�_�Ð�á�ÐÕØ Í Ç�Ô}è`O�Ð�ê×áOè}ìW5 7 ê õ 9 éV�9áOÏ Í ï Í ÏÈúé Í ÓOÏ ÍVÍ ±�Ä|á�MNÈgè9á�ÅWê6ÌPMC�ÐÕØ|Ì�ШØ}ÌOì­Ì Ó�Ï Í�Í Å Í è�Ð "¨K ê×ÐÕØ [ î á�è Í áPÇÑÐ�Ø Í ÌQM6Ó�áOÏÕê×ÐÕØ"Å�ì�Ì à1á�ï Í O�áPÅjÄ9ÔQÐ Í ì���éSó�ÓOÌ ê6è KÑÍ ìÕÔ"ÅjÅWÌ�ÏÕê�Æ Í Ð�Ø9ê6ìÇ�á�ÏÅ�ÌQM�MNÈ�à Í M×á K w�Mô *,� �(-�- � XG1 -2� X�_� ��� X 3,5 : Ï�Ì�O¡M Í ÌPObO Í ìÕìkÐ�á [ w�e ò � ° e � é ® á�ê6è�ÐE� ± e ò � î Ì ÓOÏ ÍVÍ Å Í è�ÐxÄ}Ì�Ï�ÌPÅ Í Ð Í Ï " Ì�è}é�é Í Ó�Ï Í�Í Ä}Ì�Ï�ÌPÅ Í Ð Í Ï±Fé� - � 0�5 Ó�áVÄ9ÏÕáQéQÔ]O Í Ì�M6ênìÖÐ�áPÇ�Ï�Ì�è}éQáPÅWê�Æ Í é�ÌQM6Ó�á�Ï�ê×ÐÕØ"Å�ì�O�áPÅjÄ9ÔQÐ�ê×è9Ó¦Ç�Ô9è`O�Ð�ê×áOè}ì�á Ï d)aba)aBd á c wOe ò � ° e|��ÐÕØ}Ì Ðê×è`O)M×Ô|é Í ì Í ï Í ÏÈ�é Í Ó�Ï Í�Í ±�Ä1áPM�È�è}áPÅWê6ÌPM���w�eò � ° e|� K êqÐ�Ø " Ì ÓOÏ ÍVÍ Å Í è�Ð K ê×ÐÕØ [ é/2-bX ZÑzb5 ìÑáPÅjÄ9Ô9Ð Í Ä}Ì ÏbÌQÅ Í Ð Í Ïbì�Ô õ ÏÏL� î � õ M6á�Ó ö& Ì�è}é^ õ � Û é/2-bX Z�ÒC5 ® ê~O�Ü4� Ï d)aba)a�d � Í ê×è}é Í Ä Í è}é Í è�Ð�M�ÈvÌ è|é�Ô9è}ê�Ç�áOÏ�ÅjM�ÈvÌ�Ð�ÏbÌ è}é9áPÅ Ç�Ï�áPÅåeò � é/2-bX ZÖ�25 �9áOÏ Í ï Í Ï�È Ëx±ÕÌ �$Í.Ì�è}é 0L± e � áOÔQÐ�Ä}ÔQÐÑÐ�Ø Í ÌQM6Ó�á�Ï�ê×ÐÕØ"Åå¼ \�Z _ -g� X � �Dô /�X�1 -2� X�_¨Ì�O)O Í ìÕìÕê6è9Ó­ÐÕØ Íá�ÏbÌPO¡M Í 587 ê õ 9 éÓZØ Í Ç�á�MNM6á K ê×è}Ó�M Í ÅjÅ�Ì�Ì è}ÌPMNÈ�Æ Í ìÑÐÕØ Í O�á�Ï�Ï Í O�Ð�è Í ì�ìãáQÇ�Ð�Ø Í ÌQM6Ó�áOÏÕê×ÐÕØ`Å´é* X \y\ � z}B|sz"} Ë����¢¹V�[º����·��)��´����/µ ·���´N��·1��� Ïø ����¹`�V·Q´ »��Qº�����¹¶%��_����`����º�p}_)�$� ² �)µq�Mô *,� �.- -0/�X�1 -2� X�_ ���}�_)´@p ² �����:�x¼¡�Qº��¡���)º�µg�"�Q´�µ��[�Q¶��s·Q´o�£��¹`·��3¹"·1�%·b»Qº����)¶j�)�`� " »8���¢¹ [ �:�[º��� � ² � ² Û Ï øÒö À ý ¸ � Ï ÿ& é ëT_ -�-8¾ � Í ÐL� Ï d)a)aba�d � ò à Í ÌQM�M:Ä|á�MNÈgè9á�Å4ênÌQMnìãáQÇ,é Í Ó�Ï Í�Í Ì�Ð�ÅWáOìÒÐ�±�Ð�Ø}Ì�Ð�Ø}Ì ï Í Ì ÓOÏ ÍVÍ Å Í è�ÐZÌ�Ð�M Í Ì�ìÒÐ "^K êqÐ�Ø[ é%°�á Ð Í î à�È�ÐÕØ Í Ô}ìÕÔ}ÌQM ( á�Ø}è}ìÒáOè�à1á�Ô9è}é9ê×è9Ó�Ì Ï�Ó�Ô`Å Í è�Ð î ÐÕØ|Ì�ÐW� ¥ ø& é��¢ê U Ëg±�Ì ��Í?Ì è|éqM Í Ð;� õ � n é"ß ÍÄ9Ï�á�ï Í ÐÕØ}Ì Ð­ÐÕØ ÍWÍ ï Í è�Ð�ÐÕØ}Ì Ð­è9á�è Í áPÇ?ÐÕØ Í ÌPM×ÓOá�Ï�êqÐ�Ø"Å�ìTO á�è|ìÖÐ�ÏÕÔ`O Ð Í é�à�ÈO�Mô *,� �(-�- � XG1 -2� X�_WÐ�Ô9Ï�è}ì�á�ÔQÐ�Ð�áà Í Ì�ÏbÌ è}éQá�ÅWêNÆ Í é�ÌPM×ÓOá�Ï�êqÐ�Ø"Å O áPÅjÄ9Ô9ÐÕê6è9ÓW�váO)O�Ô9Ïbì K ê×ÐÕØ^Ä9Ï�á�à}Ì�à9êNM6ê×нÈ�Ì�Ð�Å4á�ìÖÐ � þ Í ¥X& ö ó�ÐÕØ9ênìZê6è ÍbØ Ô}ÌPM×ê×нÈ�ê6ìÐÕØ Í á�è Í ÐÕØ}Ì Ð�M Í Ì�é}ì�ÐÕá�ÐÕØ Í ì Í ÐÒÐÕê6è9Ó�áPÇ3�Zê×è�Ð�Ø Í ÌPM×ÓOá�Ï�êqÐ�Ø"Å ô é�ß�È�Ð�Ø Í Ô}è9ê×áOè�à|áOÔ9è}é�ê×Ð�Ç�á�MNM6á K ìZÐ�Ø}Ì�Ð�ÌQM�M.ÐÕØ ÍÏ ÍbØ Ô9ê6Ï Í éVÄ1áPM�Ègè9áPÅWênÌQMnìãÌ�Ï Í ê6è�ÐÕØ Í áOÔQÐ�Ä9Ô9Ð�M×ênìÖÐ K ê×ÐÕØ&Ä9Ï�á�à|Ì à9ê�M×ê×нÈ�Ì�Ð�M Í ÌOìÖÐ Ïø é�¢ê U , ± Ì �$Í]é�°�á Ð Í Ð�Ø}Ì�ШÐ�Ø Í ObØ}á�ê~O Í áQÇ Û Í è|ìÒÔ9Ï Í ì¨ÐÕØ}Ì ÐI� Í ÅjÅWÌ ëy(ºé6ë�ë�OVÌ è\à Í ÌQÄ`Ä"M×ê Í é¨Ç�áOÏ\Ô õ ÏÏ�� é&ß�È� Í ÅjÅWÌ�ë (ºé6ë�ë î 5 7�Y õ f ý 7�Y O á�ÅjÄ9ÔQÐ Í ì��,ó4� · ô K êqÐ�بÄ}ÏÕáOà}Ì à9ê�M6êqнÈ�Ì Ð?M Í Ì�ìÒÐWë ÷ ÔTÇ�áOÏ­Ï�Ì�è}éQá�Å ê×è`Ä9ÔQÐ\� · é�ÓZØgÔ}ì îK ê×ÐÕØqÄ9Ï�á�à|Ì à9ê�M×ê×нÈvÌ Ð�M Í ÌOìÖÐ Ïø êqÐgÅ"Ô}ìÒÐJà Í Ð�Ø Í OVÌ�ì Í ÐÕØ}Ì ÐV� * ê6ìJìÒÔ`ObØ�ÐÕØ}Ì ÐP5 7�Y õ f ý 7�Y Ø}Ì�ìJÌ ÓOÏ ÍVÍ Å Í è�Ð�Ì�Ð�M Í Ì�ìÒÐë ÷ � Ô K ê×ÐÕØ9��é h ê6è`O Í � Ô�¥ � � ëy( î KãÍ Ø}Ì ï Í ÐÕØ|Ì�Ш¼ \�Z _ -g� X � �Mô /^X�1 -2� X�_VO á�ÅjÄ9ÔQÐ Í ì��,ó4� ô O áOÏÕÏ Í O Ð�M�È

ë ( Ð ë)v �

Page 143: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

i f(i)Oracle O

� �^+ ½m_�X z"}�|�z wNH-ÅjÄ"M6ê�O�êqÐ�Ï Í Ä9Ï Í ì Í è�ÐbÌ�ÐÕê6á�èváQÇkê×è`Ä9ÔQÐá�è Í ï Í ÏÈaê6è"Ä9ÔQÐq� K êqÐ�ØSÄ9Ï�á�à}Ì�à9ê�M×ê×нÈ\Ì�ÐjM Í Ì�ìÒÐ � � T éÕÓZØgÔ}ì K êqÐ�ØSÄ9Ï�á�à}Ì�à9ê�M×ê×нÈ\Ì�Ð�ÅWá�ìÖÐ Ïø î ÐÕØ Í ÌQM6Ó�áOÏÕê×ÐÕØ"ż \�Z _ -g� X � �Mô /^XG1 -2� X�_ K ê×ÐÕØ�á�ÏbÌPO)M Í ÌPObO Í ì�ì?ÐÕáR5 7 Y õ f ý 7 Y ÿ éQá Í ìg�:����O á�Å�Ä}ÔQÐ Í ��é8ÓZØ Í Ä9Ï�á�à}Ì�à9ê�M×ê×нÈ4ÐÕØ}Ì ÐÐÕØ}ê6ì�Ø|ÌQÄ"Ä Í è}ì�Ç�á�Ï Í ï Í ÏÈ , ±ÕÌ �$Í,ê6ìZÐ�ØgÔ}ì�Ì�Ð�ÅWáOìÒÐ � þ Í é�Wï��0ï Z��"!3(û¦¨¥\[ ������¥ ¦¨��� í~©����"!���(û�Ó,á Í è`O�ÌPÄ}ìÕÔ"M6Ì Ð Í ÐÕØ Í Ï Í ìÕÔ"M×Ð�ì�áQÇÑÐÕØ9ênìTM Í O�Ð�Ô9Ï Í ê6èaÐÕØ Í ìÒÐÕÏ�á�è9Ó Í ìÒÐgÄ1áOì�ìÒê6à"M ÍjK Ì1È î KÑÍ á�Ô9ÓOØ�ÐMÐ�á^Ç�á�ÏÅWÌPM×ê�Æ Í ÐÕØ ÍÅWáQé Í M�Ð�Ø}Ì�Эênì­à Í ê6è9Ó�é Í ï Í M6áPÄ Í éúÐÕá�Ï Í Ä9Ï Í ì Í è�Ð K áOÏ�é9ì�Ì�è}éaé Í O áQéQê6è9Ó�ÌQM6Ó�áOÏÕê×ÐÕØ`ÅWì^éjÓZØ Í Å�Ì ê6èLÇ Í Ì�ÐÕÔ}Ï ÍjKãÍK ênìÒØ�ÐÕá&Ç�áO�Ô}ì­á�è�ênì�ÐÕØ Í �Õt��/º��¡¶��V�X]`_¡�s�)�1_)µWáQÇãÐÕØ Í ÌPM×ÓOá�Ï�êqÐ�Ø"Å�ì�ê×è\ìÕáPÅ Í ��¶��:´��^_¡����ÅWáQé Í M;áPÇÑÐ�Ø Í ê6è"Ä9ÔQÐbì îá�Ô9Ð�Ä9ÔQÐbì î é Í O�ágé9ê×è9Ó�Ì�è}é^M×ênìÖÐ Ð é Í O áQéQê6è9ÓIé¢ß Í é Í ì�O�ÏÕê6à Í Ð�Ø Í ì Í ê×è�áOÏ�é Í Ï^éHùè�ê�Å�Ä`M×ê~O ê×Ðãé Í O áQéQê6è9Ó?Ä9Ï�á�à`M Í ÅWì î à1á Ð�Ø�ê6è"Ä9ÔQÐbì?Ì è|éWá�ÔQÐÄ9ÔQÐ�ì K ê�MNM|à Í Ï Í Ä9Ï Í ì Í è�Ð Í é4ê�ÅjÄ"M×ê~O ê×Ð�M�ÈséNHùè�Ä}Ì�ÏÒÐ�ê�O�Ô"MnÌ Ï îÐÕØ Í Ï Í O Í ê6ï Í é�ï Í O�Ð�á�Ï K êNM�M.à Í Ó�ê6ï Í èvà�È�Ì è�á�ÏbÌPO)M Í é,óÿï Í O�Ð�á�Ï � õ í�] Ï dba)aba�d ] c ï ± e c � ênì�ì�Ä Í O êNR Í é¨��¶��[´��^_)����´�µà�ÈaÌ�è�áOÏ�Ì�O¡M Í4^ Ç�áOϨÌ^Ç�Ô9è`O ÐÕê6á�è [ w Ì :Í ° e|�Fé ! ê6ï Í è�Ì�è�ê×è}é Í¡U Ë%±�Ì :Í;ÐÕØ Í á�ÏbÌPO)M Í Ï Í ì�Ä|áOè}é9ì K ê×ÐÕØ�ÐÕØ Íï�ÌQM6Ô Í [ ó Ëùô;õ_] n é h ê×è`O Í ÐÕØ Í ï Í O�Ð�á�Ï �?î Ð�Ø Í áOÏ�Ì�O¡M Í'^ î Ì è}é4Ð�Ø Í Ç�Ô9è]O�ÐÕê6á�è [ Ï Í Ä}Ï Í ì Í èOÐ?ÐÕØ Í ìÕÌPÅ Í ê×èÇ�áOÏ�Å�Ì ÐÕê6á�èó=Ð�Ø9á�Ô}Ó�بÐ�Ø Í È?OVÌ Ï�Ï�È­éQêi� Í Ï Í è�ÐEÅ Í Ì è9ê6è9ÓOì¢Ì�ìEO á�ÅjÄ9ÔQÐ�Ì ÐÕê6á�è}ÌPM Í è�ÐÕê×ÐÕê Í ì ô KãÍ�K êNM�MQìÕÌ ï Í á�Ô9Ïbì Í M6ï Í ì,ìÒá�Å Í ì�È�Å"à1áPMnìÌ è|é�Ô}ì Í ÐÕØ Í Ç�Ô9è`O�Ð�ê×áOè\ÐÕáaÏ Í Ä9Ï Í ì Í è�Ð"ÌQM�M;Ð�Ø9Ï ÍVÍ á�à"× Í O�Ðbì[éq�¢ê6Ó�Ô9Ï Í ë (ºé6ë�Ó�ê6ï Í ì"Ì�Ä9ê~O�ÐÕáOÏÕênÌQMÑïgê ÍbK áPÇ�êNÅjÄ"M6ê�O�êqÐê6è"Ä9ÔQÐbì[éÓZØ Í êNÅjÄ"M6ê~O ê×Ð�Ï Í Ä}Ï Í ì Í èOÐbÌ�Ð�ê×áOèÛáQÇ"áOÔQÐ�Ä}ÔQÐ�ì�Ï ÍbØ Ô9ê6Ï Í ìvìÕáPÅ Í O�Ì Ï Í é óeR}ÏbìÖÐ�Ì�ÐÕÐ Í ÅjÄQÐ�Å�Ì1Èäà Í Ð�á ìÕÔ9Ó�Ó Í ìÒÐÍ¡U Ì�O�Ð�M�È�Ð�Ø Í ìÕÌPÅ Í é Í R}è9ê×ÐÕê6á�è�Ì�ì�Ô|ì Í éLÇ�áOÏ­êNÅjÄ"M6ê~O ê×Шê×è"Ä}ÔQÐ�ì î ê/é Í é î à�È�á�ÏbÌPO)M Í ì[éjßãÔQЭÐÕØ}Ì Ð¨éQá Í ì­è9á�ШÌQÄ"Ä Í Ì�ÏÐÕávà Í O áOè}ìÖÐ�ÏÕÔ]O�ÐÕê6ï Í U�ßäØ}Ì ÐMéQá Í ìJê×Ð�Å Í Ì�è�ÐÕá�ì�Ì1È KÑÍ�K êNM�M¢ìÕê�Å�Ä`MNÈ�á�Ô9Ð�Ä9ÔQÐ�Ì�à1á U z KãÍ è ÍVÍ é�Ð�á�à Í ÅWá�Ï ÍÍ¡U Ä"M6ê~O ê×Ð^é�ê�á K éQá Í ì"Ð�Ø Í à1á U O áPÅjÄ9Ô9Ð Í êqÐbì�Ç�Ô9è`O ÐÕê6á�è}ì^é h á�Ï Í ÌPMNM�È KÑÍ ìÕØ9á�Ô"Mné à Í Ï Í Ä9Ï Í ì Í è�ÐÕê6è9Óaá�ÔQÐÄ9ÔQÐ�ìà�ÈúÌQM6Ó�áOÏÕê×ÐÕØ`ÅWìJÐ�á&O�áPÅjÄ9ÔQÐ Í ÐÕØ Í Å´é¦ßãÔQÐ�Ð�Ø Í è�êNÇÑÐ�Ø Í á�ÔQÐÄ9ÔQÐ%O áOè�Ð�Ì ê6è}ì � à9êqÐbì­áQÇãê×è"Ç�á�ÏÅWÌ ÐÕê6á�è î ÐÕØ Í è�ê×Эê6ìê�Å�Ä1áOì�ìÕê×à"M Í ÐÕá&Ä9Ï�áQéQÔ`O Í Ì�ì5Å�ÌPMNM;ÌPM×ÓOá�Ï�êqÐ�Ø"Å«ó�áPÇtM Í è9Ó�ÐÕØ�ì5Å�ÌQM�M Í ÏMÐÕØ}Ì�è � ô ÐÕØ}Ì Ð�OVÌ è�Ó�ê6ï Í á�ÔQÐ�Ð�Ø Í ì ͦ� à9ê×Ð�ìáQÇ�ê6èÇ�á�ÏÅ�Ì�Ð�ê×áOèoé4` Í Ð î KÑÍ Ø|Ì ï Í ì ÍVÍ è\Ì à1á�ï Í Ð�Ø}Ì�Шê×Ð"ênì?Ä1áOì�ìÒê6à"M Í ÐÕáúé Í O áQé Í ï Í ÏÈ Í P¦O�ê Í èOÐMNÈ î Å"Ô`ObØÕÅWá�Ï ÍÍ P¦O�ê Í èOÐMNÈ�Ð�Ø}Ì è�Ð�Ø Í Ð�êNÅ Í êqÐ K áOÔ"Mné�Ð�ÌPÜ Í Ð�á K Ï�êqÐ Í éQá K è�Ð�Ø Í áOÔQÐ�Ä}ÔQÐ^égê�á K éQêné KãÍ ÌPObØ Í ê6ï Í ÐÕØ|Ì�ÐbN ìtM6áOì ÍÍ¡U ÌPÅ4ê6è}Ì ÐÕê6á�è4Ï Í ï Í ÌPM6ì,Ð�Ø}Ì�Ð;áOÔ9Ï�á�ÔQÐÄ9ÔQÐbì KÑÍ Ï Í Ì�O�ÐÕÔ|ÌQM�MNȨà Í ê6è9Ó¨ì�Ä Í O êNR Í é4Ï Í MnÌ�Ð�ê×ï Í Ð�á�ÐÕØ Í ê6è"Ä9ÔQÐÐé h Ä Í O êNR]O�ÌPMNM�È îKãÍ Ä}ÏÕáQéQÔ`O Í évÌ è�ÌQM6Ó�á�Ï�ê×ÐÕØ"Å~Ð�ájO�áPÅjÄ9ÔQÐ Í ÐÕØ Í áOÔQÐ�Ä9Ô9ÐZï Í O ÐÕá�ÏãÐ�Ø}Ì�Ð�Å�Ì�é Í áOÏ�Ì�O¡M Í OVÌQM�M6ìÑÐÕá4Ð�Ø Í ê×è`Ä9ÔQÐ�á�ÏbÌPO)M Í éó hQÍ�Í �¢ê6Ó�Ô9Ï Í ë (ºé � é ô h ÐÕÏ�ê~O�Ð�M�È\ì5Ä Í ÌPÜgê×è9ÓaÌQM�M KãÍ é Í ì�O�ÏÕê6à Í ê6ì"ÐÕØ Í ÌPM×ÓOá�Ï�êqÐ�Ø"Åa5Þó¢Ä9ê~O�Ð�Ô9Ï Í é\ê6è£�¢ê6Ó�Ô9Ï Í ëy(Qé T ôÐÕØ|Ì�Ð î K Ø Í è�ÓOê×ï Í è�áOÏ�Ì�O¡M Í ÌPObO Í ìÕì?ÐÕá�ÐÕØ Í ê6è"Ä9ÔQÐ [ î O áPÅjÄ9Ô9Ð Í ìÑÐ�Ø Í áOÔQÐ�Ä}ÔQÐ K áOÏ�é�éuÓZØ Í ì Í Ügê×è}é�áQÇ�áOà× Í O Ð�ìãÌ Ï ÍÏ Í Ç Í Ï�Ï Í éWÐ�á4ê6èvÐÕØ Í O á�ÅjÄ9ÔQÐ Í Ï�ì�O�ê Í è`O Í M×ê×Ð Í Ï�Ì ÐÕÔ9Ï Í Ì�ì�Ä9Ï�á�à}Ì�à9êNM6ênìÖÐ�ê�OJá�ÏbÌPO)M Í ÅWÌ�ObØ9ê6è Í ìZÌ è|éVÄ"MnÌ1È�Ì4ìÒê6Ó�è9êNR]OVÌ è�ÐÏ�áPM Í ê6è�ìÒá�Å Í áPÇ�Ð�Ø Í Å�Ì�×Öá�Ï�é Í ï Í M×á�Ä"Å Í è�Ð�ìãÐ�Ø Í Ï Í éß Í è9á K Ç�áOÏ�Å�ÌQM�M�È�é Í ìO Ï�ê6à Í ÐÕØ Í êNÅjÄ"M6ê�O�êqÐ�é Í O áQéQê6è9Ó�Ä9Ï�á�à`M Í Å^w/^X �N3�� - ��-b3�z"}�|�z t � ¼ \�Z¢04� 1 � -�½ 3 � \ ð �^+ ½ - ½�� � X�1 -2���$3¢+�# � ��ºT·Ñ�¢t�� ² ¼¡·Q¶���´�µ¦�5¼M_�� ² �¡�bN�E�¢¹"�g��¶��[´��^_)���² �b_�� ² ����»?�:º����)´N�)¶ �~��Ç

ë ( Ð ë)v T

Page 144: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

i f(i)Oracle O

i f(i)Algorithm A

� ��ced _�X z"}�|�Ò w�H-ÅjÄ"Mgf~O�fgh'i�j)Äki�jml�jonIhqprh�fts%n)sQÇus%vwhÄkvwh

i f(i)Algorithm A

� ��cxd _1X z"}B|ty wuÓ{z|j!p�O}h�v|pQM~f�ÅjÄ"Mgf~O�fgh'sBvwh�Äkvkh

���1Ðq� v�v

Page 145: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

�T�t���|�� |�·�º�·Q¶j�)�$�)º��R� d Û d½·�� ² ·��`µy�Q��¹`�¡º��`·�º�·Q¶j�)�-�¡º��&��¹`·��j·�º��qº��¡´��¡��·��]� f �½¼&�¢¹"����� ² �3� ± bN���¡º�º��º�`·�º�·Q¶j�)�$�)º8� ¤X���g���� �t·�� ² ��¶��:´����)����º��$�:º��¡�¡�)�`�-·��/�s���Õ�½¼Tº��q���)���1� ² �1�q�)�$�Qº ¾ ±3� c � Ã�ji:k�le���{� ��� � �T·Q����¶��:´����)���%º��-�[º��¡�)�¡�]�$·Q���s�Q��5 �½¼��� ² �(»x��º ² 1 ± � � � ��¹S��¹`·��P�3�$1 d ¾�� ¥��o��� ¼¦� � ��¹�·��� ² �Á»x�Qº ² �����~���s�)Ã'�Q�`�q�¡� ����·�´�´�µy��5��$·� %¡�¢%·�¢#£E¤r¥ �w¦ Ëx±ÕÌ �:Í�·C¤ ²3§ �w¦ ¥ �w¦ ¢�Â�¨�� ¦ ¹k¡ Ë ¦ ¹6� §�§ º ² £E¤[· ¦ ¡ § ¼�1[Ã�U©?ªv�k«�¬2� 5�B­ Ó{zkj!i�vkn|nkfgn|®Rh�f�ÅTj#sPÇ�h�zkjW¯wjm°osw¯wjoi�f>l8¯wjo±|nkjm¯)h�sT²xj#h�zkjWl�v`ųsQÇuh�zkj!h�zkj!h�f�ÅRj!h�pPÜ%jon)h�s4°osPÅjÄkvwh�j#p¯wjml�°�i�fNÄkh�fts%n3sQÇu5´p%n|¯)h�zkj!µ�s%iqlLh Ð °mp%l�jPi�vknkn|fgnk®Th�fNÅRj#sQǶ5 ­·k­ 5¸f>l#pC¹t¹tsrµ�j�¯6h�s6²xjRi�p%n|¯ws�ÅTf�Æoj�¯~º�ftn»µ�zkft°qz»°opBl�jTfgh?żv|l�h?Äki�s?¯kv|°�jTh�z|jR°os%i�i�j�°}h#pCn|l�µ�joi½��ǾsBi#jo¿%jmi�È°�s?s%iq¯wftn|prh�j � µ�fÀh�z^Ä|i�sB²|pC²kft¹tfÀh½ÈUpCh�¹gj�p%l�h �Á ��p%l{f>l8l�h�p%n|¯kpCiq¯VǾs%i�iqpCn|¯ws�ÅRfNÆmjm¯Up%¹g®Bs%i�fÀh�z"Žl ��­Â|­ H$Çkh�zkj{pC¹t®%sBi�fgh�z`ÅÃi�vkn|l�fgn¼h�f�ÅRj�Ä���� � p%n|¯#v|l�jml # �¾� � i�p%n|¯ws�ÅŲ|fÀhql�sBn¼°�sw¯wj�l�sPÇ|¹tjonk®%h�zW�¶º�h�zkjon/fÀh¶°op%n¼²xj°�s%n?¿Bjoi�h�jm¯3ftnIh�sUp½iqpCne¯wsPÅRf�Æojm¯6p%¹g®Bs%i�fÀh�z"Å�Ä|i�sw¯wv|°ofgn|®½h�zkj/jonIh�fti�j/°�sw¯wjmµ�sBi�¯3ftn6h�f�ÅRj ^ ���~Ä��¾� � ¹ts%®�� �²�ÈTi�vknknkftnk®¼fgh ^ ��¹gsB®Æ� � h�f�ÅTj�lÆsBn4jmpB°qz4°�s?s%iq¯wftn|prh�j'pCne¯Rh�pPÜIftnk®?ŽpQ×Ls%i�fÀh½ÈT¿%s%h�jmlÆpCn|¯½sBvwh�Ä|vwh�h�fgnk®/h�z|jlLh�i�ftnk®Ul�sUsB²wh�p%fgnkj�¯ ­ HÇh!°op%nÈpC¹>l�sU²ejR°�sBnI¿Bjoi�h�j�¯�fgnIh�s)pU¯wjoh�joiÅRfgn|ftl�h�f>°/¯kjm°�sw¯wftnk®Up%¹g®Bs%i�fÀh�z"ÅNi�vkn|nkfgn|®fgn)h�f�ÅRj ^ �¾� ·%É �gÊ%� Ä���� ��� ²�ÈUl�f�żvk¹>prh�fgnk®½p%¹g¹~iqpCn|¯ksPÅ�l�h�i�fgn|®Bl{sQÇu¹gjmnk®Ch�z # ��� �}­

Ó{zkjjǾsB¹g¹tsrµ�fgn|®Uh�zkjosBi�jbÅËl�v"Žl!v"ÄÌh�zkj½vknepQż²|fg®Bvks%v|l#¯kjm°�sw¯wftnk®�i�jml�vk¹ÀhqlTǾs%iWÍ8jojm¯ ÐÇÎ v|¹g¹tjoiW°os?¯kjmlVh�zeprhWµ�js%²kh�pCftnkj�¯Uftn3h�zkf>l�¹tjm°}h�vki�j ­ÏWÐ ©?Ñ|«r©?ªÓÒkÔ~Õ�ÒwÖÅ× § º�·!Ø'¡q¡qÙrÚÇÛ �wÜEÜ ¡oÝP� § ÙB¡�Í Î ò õ ¸ õ � »¶£ ¦¾Þ Û ç � �$±¶ß ��� � ¦¾Þ ¡!à Ü á § Ý}£ ¦EÞwâäã ª Z «�Ñ?åx© � �Mô� ©G1BÑ � ©B«3£>¢/à½Ý�àr¤xÙ § â £gæ�¡�Ù3à Ü á § Ý}£ ¦EÞwâN¦¾Þ à ¦ � § Ý}Ý�¡q� ¦ ¢ � ¥ ¦ § à�¼qÝ�àB� ¦ £ § ¤ �Ï�� ¡oÝ}Ý § Ý#£E¤ ¦ £ â ¡�ÄesB¹NÈ��$�èç<±|ç�¹gsB® Û � ÃÓ{zkj)¹gf>lLh Ð ¯kjm°�sw¯wftnk®6¿Bjoiql�fts%n�°op%nQ²xjU¯wj�±enkjm¯Qp%n|pC¹ts%®Bs%v|l�¹�È ­ Ó{zkjU¹tftl�h Ð ¯wj�°�sw¯wftnk®ÈpC¹t®%sBi�fgh�z`ÅËl�zks%vk¹>¯�sBvwh�Äkvkhf�Å�Ä|¹gf>°�fghPi�j)Äki�jml�jonIhqprh�fts%nel{sQÇ�h�zkj ¨�Ð nkj�pCi�²�ÈU°�sw¯wjmµ�sBi�¯kl ­�é jWµ�ft¹t¹�²xj/l�¹gft®%zIh�¹�ÈVÅRsBi�j#i�jo¹>prêwjm¯�p%n|¯6pC¹t¹gsrµÃh�z|jpC¹t®%sBi�fgh�z`ÅÃh�sPsBvwh�Ä|vwh ¨ ·CÏ ¨ pC¹t®%s%i�fgh�z"Žlmº�µ�fgh�z¼h�zkj�°os%n|¯wfgh�fts%n¼h�z|pCh¶jo¿%jmi�È!nkj�pCi�²�È!°osw¯wjoµ�s%iq¯#²xj�i�j)Äki�jml�jonIh�jm¯��pBl�pC¹>l�s�sCh�z|joi�p%¹g®Bs%i�fÀh�z"Žlxh�z|pCh�¯ws%nJ= h�°os%i�i�j�l5Äxs%ne¯8h�s8°�sw¯wjoµ�s%iq¯kl �}­ Ó{z?v|l�µ�jsB²wh�p%fgnVh�zkj8Ǿs%¹t¹tsrµ�fgnk®�Ä|i�sB²k¹gjbÅ�ë/3©Bì 3�� - � Ñ 3 ÒkÔ~Õ�Ò?íïî ã ª Zuð4� 1 � - ð4� �.- � ©�1%Ñ ���$3uc~ñ × § Ý6à/�u�?¡�Ù�¼�à â £ Ü+ò § ¼3� § Ù%¡�¢¼bN� ¦EÞ ¡3£ â ¥ Ü £���£ ¦ Ù%¡q� § ÙC£E¤ á¥xÝ § � Ü ¡ â £>¢oó�T�t���|�� |8àrÝ�à â ¡ ¦ ¡oÝq¢R�¶ç Û dLàr¤xÙ\àr¤ ò § ¦EÞ ¡�ÝT¥|àrÝ�à â ¡ ¦ ¡�Ýq¢ ¦EÞ à ¦ àrÝ�¡�Ý�¡ Ü ¡�ôràr¤ ¦�f §Lõ ¦¾Þ ¡�� § Ù%¡3�÷öøbN�T¡�Ý}Ý § Ý¥|àrÝ�à â ¡ ¦ ¡oÝ8�Wù ���g���� ��àr¤xÙ4£ â ¥ Ü £��o£ ¦ Ý�¡Ç¥�Ý�¡�¢�¡o¤ ¦ à ¦ £ § ¤ §Lõ Ý�¡q�q¡o£Eô�¡qÙUô�¡q� ¦ § Ý ¾ ö � Ê �Æú�Rû�ü�ýe�U�{�w¦ ¥ �w¦ ¨ · à Ü á § Ý}£ ¦EÞwâ ¢!5VþCçoÿoÿmÿ~ç�5 ½�� ¢ � � ÞȦ¾Þ à ¦ õ�§ ÝT¡oô�¡oÝ ò � § Ù%¡(» § Ý�Ùm1)öÌ� ¢ � � ÞȦ¾Þ à ¦ �)�41kç ¾���� �¦¾Þ ¡oÝ�¡/¡��B£>¢ ¦ ¢Wàr¤è£E¤xÙ%¡����Æö�� ¨ ·� ¢ � � Þ�¦¾Þ à ¦ 5 ¨ »¶£ ¦¾Þ § Ý�à%� Ü ¡Rà%�q�q¡}¢q¢ ¦ § ¾ £>¢WàC¤Ìà Ü á § Ý}£ ¦EÞwâ ¦ § � § â ¥ �w¦ ¡ 1 úH n3h�jmi�½l{s �uh�z|ftl8¯kj�±|nkfgh�fts%n�ºkµ�j#°mpCn�l�v��½pCi�f��oj!s%vki�¹tf>lLh��ǯwj�°�sw¯wftnk®½pC¹t®%sBi�fgh�z�³pBl��¾s%¹t¹gsrµ8lmëÏWÐ ©?Ñ|«r©?ªÓÒkÔ~Õ�Ò��ø× § ÝVà#ØP¡�¡qÙCÚÇÛ �wÜEÜ ¡�ÝP� § Ù%¡�Í Î ò õ ¸ õ � »¶£ ¦¾Þ���� ��� À � ¸�� þ �9�� � õ�§ Ý'¢ § â ¡ 0 �! � ¦¾Þ ¡#à Ü á § Ý}£ ¦¾Þ?â�Mô *E� �.-#" � ©�1%Ñ � ©I«�£>¢ÈàQÝ�àr¤�Ù § â £gæ�¡qÙ�à Ü á § Ý}£ ¦EÞwâ ¦EÞ à ¦ � § Ý}Ý�¡q� ¦ ¢ � ¥ ¦ § à õ Ý�àB� ¦ £ § ¤ ��$ 0 ¡�Ý}Ý § Ý6£E¤ ¦ £ â ¡% s%¹�&��7�Ìç@±eç � � ú'Wï)(+* ,.-0/213-#4�5�687:92;2-#<>=?4:@BADC

é j4lLhqpCi�hWµ�fÀh�zèh�zkj4f� % ¹gf>°�fgh�Rsw¯wjo¹>lW¯wf>l�°�v|l�l�j�¯Èftn»h�z|j½¹tpBlLh¼l�jm°�h�fts%n ­FE hWf>l#z|p%i�¯Èh�s % fgnQ¯wsrµ�nèh�z|j4j�êkp%°�h% s%ftnBhVµ�zkjoi�j#h�zkjml�j�Rsw¯wjo¹>lPµ�jmi�j#±ei�l�h'ftnBh�i�sw¯wve°�jm¯ ­HG �Eh�jmn6h�zkj3&�µ�jmi�jWf� % ¹tft°ofÀh!fgnèl�sITjWh�jm°qz|nkft°mpC¹ui�j�l�v|¹Àhql

��� � �0J?�

Page 146: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

pCne¯¼h�zkjon�½p%¯kj�j�ê % ¹tft°ofÀhsBnk¹K&/²�&W¹tpCh�jmi¶µ�sBi�Lwl ­NM zkj3&/pC¹>l�sVzep�¿%j�¼vk¹gh�f % ¹tj8s%i�fg®Bfgnel�µ�fgh�z|fgn4°osO % vwh�joil�°�ftjon|°ojP l�jo¿%jmi�p%¹�µ�sBi�LwlPfgnÌh�z|jT¹>prh�jRjoft®%zIh�ftjml#l�joj3 h�s�°�sBn?¿%joi�®%j¼s%nèh�zkj�l�j�Rsw¯wjo¹>l!fgne¯wj % jon|¯kjonIh�¹�& ­QG nkjRsO�Æh�z|j±|iqlLh�µ�s%i+LwlÆh�z|prh8vel�j�¯)l�v|°qzRTsw¯wjm¹tl{f>l{h�z|prh�s �8S#pC¹gh�sO�¾jon3pCn|¯ M i�p%®%joiT� � U � ºkµ�zks½p %V% ¹gftjm¯)fgh8fgn3h�z|j!°os%nIh�joê?hs �Æp%¹g®Bjo²kiqpCf>°Wp%¹g®Bs%i�fÀh�z�½l ­HM zkftlVµ�s%i+L)joê % ¹gf>°�fgh�¹�&?�¾sw°�v|l�l�jml8sBn�h�zkj/f� % ¹tft°ofÀhTRs?¯kjo¹>l/��pCzkj3RW � pCn|¯�h�zkjmi�jm²X&°op % h�v|i�j�¯�h�z|j)j0Y½°ofgjmn|°#&�sO�Vl�jo¿BjoiqpC¹�p%¹g®Bs%i�fÀh�z�½l¼¿Bjoi+&»jo¹tjo®Bp%nIh�¹�& ­[Z i�s%v|n|¯�h�zkj3l�p Rj)h�f�Rj%ºh�zkj3fK % ¹tft°ofÀhftn % vwh�Rs?¯kjo¹{µ�pBlWftnIh�i�s?¯kv|°�j�¯�fgnIh�sè°�sw¯wftnk®Èh�zkjms%i+&è²�&[\Vs%¹>¯wi�jof>°qz\pCn|¯���jo¿?ftn]� ÂO^ � ­_E n\h�zkj)¹tp%nk®%vepC®%jUs �°�sw¯wftnk®Uh�zkjms%i+&%ºxh�zkj3&�¯wjo¿Bjo¹ts % jm¯�pU¹gf>l�h�� ¯wjm°os?¯kfgnk®3pC¹t®%sBi�fgh�z� �¾h�zkj/±|iqlLh!nks%n���h�i�ft¿?ftp%¹�¹tftl�h�� ¯wjm°osw¯wjoi`W � �¾s%iPh�z|ja'pB¯kp ½p%i�¯#°os?¯kjÆftn#h�zkj�fK % ¹tf>°�fghuftn % vwhbRsw¯wjo¹ ­BM z|j0&!pC¹>l�s'l�zksrµ�jm¯#p % srµ�joi��¾vk¹Bp %�% ¹tft°mprh�fgsBnWs �k¹tftl�h�� ¯wj�°�sw¯wftnk®h�s3h�zkj��¾s%vkn|¯|prh�fts%nelPsO��°�i+& % h�sB®%iqp % z�& ­ � é j�Rft®%zIh!h�p%¹KLÈp%²esBvwhVh�zkf>l!i�j�l�v|¹Àh!fgn»p3¹tpCh�jmiV¹tjm°�h�vki�j ­.�cZ ¹tl�s|º�pChh�z|j4l�pOTjTh�fKRj%º�l�v|°qz�Tsw¯wjm¹tl!µ�joi�jRj�ê % ¹ts%fgh�j�¯Èh�s�°qzkjm°�LÈs%i#f� % i�sr¿BjT°os%i�i�j�°}h�n|jml�lPsO� % i�sB®%iqp ½l'²�&ed�¹tv�pCne¯!S#p%nkn|p%nf� · � pCn|¯gd�¹gvV3º;��vk²�&%º{pCn|¯:Í�vk²|fgnh�¾jm¹t¯i� ·w� � ­]Z l4fgh½h�vki�nkj�¯�sBvwhmº�l�v|°qzïi�j�l�vk¹gh�lU°�s%v|¹t¯ï²xjftnBh�joi % i�j�h�j�¯UpBl�jmi�i�s%i�� °�s%i�i�jm°}h�fgsBn½pC¹t®%s%i�fgh�z�½lj�¾s%i�l�sIRj!°osw¯wjmlT� � ^ ºVkwjm°}h�fgsBn �B­  � ­8l ftn|pC¹t¹K&Bº?h�zkjH�¾vk¹t¹K�4Ð|j�¯w®%j�¯Rsw¯wjo¹'��fK % ¹tf>°�fgh/ftn % vwh¼p%n|¯Ìs%vwh % vwhmºuµ�fgh�z�¹tftl�h�� ¯wjm°osw¯wfgn|®�°op % pC²kft¹gfgh�ftjml � µ�joi�jR°os%n|l�f>¯wjoi�jm¯èfgn Z iWj�h/p%¹ ­ � � �pCne¯ Z i�sBi�pTpCn|¯2k?ve¯kpCnc� ^ � ºepCn|¯Q½p%¯wj#joê % ¹gf>°�fgh8fgn2k?v|¯|pCn�º M i�jo¿?ftl�pCn�ºkpCn|¯ ­ p%¯wzepCnc� �B��· � ­M zkj�p%¹g®Bs%i�fÀh�z�½l/zep�¿%j�pÌl�sORjmµ�z|prh4l�fK % ¹tjoi½zkf>l�h�s%i+& ­ � Z l4p%¹gµ{p�&wloºn|sCh�fts%nel½pCi�j3zepCiq¯wjoiTh�sÌh�i�pB°�j3h�z|p%npC¹t®%sBi�fgh�zVRl3W �:M zkjVl�f� % ¹gjVpC¹t®%sBi�fgh�z�m�¾s%i{¯wjm°osw¯wfgn|®¼Í�joj�¯�� Î vk¹t¹gjmi�°os?¯kjml8�¾i�sOnk?j�°}h�fts%n ���w­.· f>lƲep%l�jm¯Rs%n4p%npC¹t®%sBi�fgh�zVÅsO�od�jmp�¿Bjoi�p%n|¯ l joft®%jon?²|p%v�p� �m � ºrµ�zksBl�j�p%²kft¹gfghq&!h�s!¯wjm°osw¯wj�p%¹g¹ % s%¹�&In|sORftp%¹tl�µ{p%l % sBfgnIh�j�¯WsBvwhu²�&��f % h�s%nc� r � ­sM zkj#f� % i�sr¿Bj0RjonIh�ftntk?jm°�h�fts%n ���k­  f>l8¯wvkj!h�sQ\Vj0�Rjo¹t¹�j�hVpC¹ ­ � ÂOJ � ­sl v|i�h�zkjoi8f� % i�sr¿%j0RjmnBhqlh�s4h�zkf>l'p%¹g®Bs%i�fÀh�z��º|¯wjm°osw¯wfgn|®4pCi�²kfÀh�i�p%i�ft¹�&U°�¹tsBl�j!h�s4zepC¹K�uh�zkj:RftnkfK/v� ¯wftl�h�p%n|°�j:�¾s%i � ó ±Uµ�joi�j!®%ft¿%jmn3²�&\Vj0�Rjo¹t¹|p%n|¯)k?v|¯kp%n?� ÂB� � ­bM zkj�¹tftl�h�� ¯wjm°osw¯wfgn|®!p%¹g®Bs%i�fÀh�z�äftnFk?jm°�h�fts%n ���k­ J ftlƯwvkj{h�s�kwv|¯kpCn�º M i�jm¿If>l�pCn�ºCp%n|¯­ p%¯kz|pCn�� �B��· � ­uM zkf>l8pC¹t®%sBi�fgh�zV³l�f� % ¹gfg±|j�l8p % i�jm¿?fgsBv|l�¹gf>lLh��ǯkjm°�sw¯wftnk®½pC¹t®%sBi�fgh�zV³s � Z i�s%iqp/p%n|¯2k?v|¯kp%n�� ^ � ­

��� � �0JXv

Page 147: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

w xHy z{x�|~}��n��� ���

� � �{� i�f�L Z ®%i�jo¹t¹ º Z ¹gjoêwp%n|¯wjmi��pCiq¯h&Bºxp%n|¯�S!jon|nkj�h�ze�xjo®Bjoi ­D� %�% joiV²xs%vkn|¯|lD�¾sBiP°�sBn|l�h�pCnIh�� µ�joft®%zIh'°�sw¯wj�l ­�+�u�u���wÝ�àC¤k¢oà%� ¦ £ § ¤k¢ § ¤R�}¤ õ�§ Ý â à ¦ £ § ¤�� Þ ¡ § Ý ò º JIv ë ·C r Â��w·CÂIUB� º · O I ­� · � Z ¹�¾i�jm¯:� ­3Z zks|º��Bs%zkn � ­ a8s % °oi�sO�EhmºrpCne¯{�%j0�xi�j0&H� ­�� ¹t¹K½p%n ­ � Þ ¡u�T¡�¢q£ á ¤4àr¤�Ù��P¤�à òrÜ ¢}£>¢ §Lõ��¶§ â ¥ �w¦ ¡oÝ� Ü á § Ý}£ ¦EÞwâ ¢ ­jZ ¯k¯wf>l�sBn é jml�¹gj3&Q�Ævk²k¹tftl�zkftnk®���sO % pCn�&Bº �3U r J|­�  � Î fKL?¹tsBl Z8� h�p%f ­�M zkj3l�zksBi�h�jml�h/¿Bjm°}h�s%i % i�sB²k¹tj0aftl����u� z|p%i�¯e�¾sBi/iqpCne¯wsORf��ojm¯»i�jm¯kv|°}h�fgsBn|l ­_E ng �Ý § Ú�q¡q¡qÙr£E¤ á ¢ §�õ ¦¾Þ ¡�¡I¢ ¦EÞ �P¤e¤ � à Ü � � Û � òrâ ¥ § ¢q£ �wâ § ¤£� Þ ¡ § Ý ò §�õF�§ â ¥ �w¦ £E¤ á º % pC®Bjml � �x�`U ºV�VpC¹t¹>p%lmºM j�êkpBloº ·%Â��w·Ov¼Î p�& �3UOUI^k­� J � �'s%®Ip Z ¹gsBn�º��Bjoz|sBl�zIvep_d�i�v|°�L�ºs�BsBl�j % zg�'p%s%i�º Î s%n|f��'p%s%i�ºÆpCn|¯:Í�sBnkn�&QÍ�sCh�z ­ ��s%nelLh�i�v|°�h�fts%n�s �pBl�&� % h�sCh�f>°op%¹g¹�&�®%s?sw¯Q¹tsrµ��Çi�pCh�jUjmi�i�s%i�� °�s%i�i�jm°}h�fgn|®�°�sw¯wjmlTh�zki�s%vk®Bz % l�jov|¯ks �Çi�p%n|¯wsO ®Bi�p % z|l ­ ���u�j��kÝ�àC¤k¢oà%� ¦ £ § ¤k¢ § ¤?�}¤ õ�§ Ý â à ¦ £ § ¤�� Þ ¡ § Ý ò º ÂI^ ë � U��w�k�3v º �3UIUB·k­� � � kwfg®IpC¹ Z imº�Í�f>°qz|pCiq¯g¤�f % h�sBn�º8Í�sBnkfÀh�h)Í�vk²|fgnh�¾jm¹t¯�º8pCn|¯ Î pB¯wz?v�k?v|¯kp%n ­ Í8jm°�sBn|l�h�i�v|°}h�fgnk®Qp%¹g®Bjo²kiqpCf>°�¾v|n|°}h�fgsBn|l��¾i�sOpRfgê?j�¯�¯kprhqp ­ ���+�VÛ>¥ § � Ý}¤xà Ü § ¤ �¶§ â ¥ �w¦ £E¤ á º · ^ � ·%� ë JX^O^��w�w�B� º �`UOUIUk­� v � kkpCn � jmjo¿ Z i�s%iqpkº���pCiqlLh�jon¦¤�vkn|¯~º�Í8p � jmjo¿ Î s%hLµ�p%nkf�º Î p%¯wz?vgk?v|¯kp%n�º�p%n|¯ Î p%i�ftsck��ojm®%jm¯�& ­ �i�s?s �¿Bjoi�fÀ±x°oprh�fgsBn½pCn|¯Rh�zkj8z|p%i�¯knkjml�lsO�~p %�% i�s�êwfK½prh�fgsBn % i�sB²k¹tj0½l ­ ¥ § � Ý}¤�à Ü §Lõ ¦EÞ ¡D� � Û6º JI� � ÂB� ë � �#�w�%�B� ºÎ p�& �3UIUO^k­� r � kkpCn � jmjo¿ Z i�sBi�pRp%n|¯�k?z�/vkjo¹Nkkp��¾iqp ­ �Æi�sB²|pC²|fg¹tftl�h�f>°!°qzkjm°�L?ftnk®Rs � % i�sIsO��loë Z nkjoµø°qz|p%i�pB°}h�jmi�f��mpCh�fts%n)s ���� ­ ¥ § � Ý}¤�à Ü §�õ ¦EÞ ¡H� � Û6º J?� � ��� ë§r �x��·B· ºX�Bp%nIvepCi+& �3UOUI^k­� ^ � kkpCn � jmjo¿ Z i�s%iqp�pCn|¯ Î p%¯wz?v�k?v|¯|pCn ­IE % i�sr¿Bjm¯V¹gsrµ�� ¯wjm®%i�jojuh�j�lLh�fgnk®PpCn|¯#fgh�l�p %�% ¹gf>°opCh�fts%n|l ­ E n� �Ý § �q¡q¡qÙrÚ£E¤ á ¢ §�õ ¦¾Þ ¡?�©¨Æ¡�¤ ¦�ò Ú«ªW£E¤ ¦¾Þ �P¤e¤ � à Ü � � Û � òrâ ¥ § ¢}£ �wâ § ¤�� Þ ¡ § Ý ò §Lõ)�§ â ¥ �w¦ £E¤ á º % pC®Bjml JX^B�`��JIUI� º� ¹¬�¶p%l�s|º M j�êkp%lmº J � v/Î p�& �3UIU r ­� U � � ­­Z l�/vwh�z»pCn|¯t� ­ d�¹gs?sI ­{Z Rs?¯kvk¹tp%iVp %�% i�sBpB°qz�h�sRL%j0&6l�p��¾jm®%v|p%i�¯wftnk® ­ �+�u�u�®�kÝ�àr¤|¢�àB� ¦ £ § ¤|¢ § ¤��¤ õ�§ Ý â à ¦ £ § ¤£� Þ ¡ § Ý ò º · U ë · ^��w·w� º Î pCiq°qz �`UO^%Â|­� � � ¤�¯p%l��o¹`¯scd�p%²|pCf ºs¤�pCn|°oj l sBi�h�nksrµ#º�p%n|¯���pCiqlLh�jong¤�vkn|¯ ­ �8s%n��ǯwjoh�jmi�Rftnkftl�h�f>°�j�ê % s%nkjmnIh�f>pC¹{h�f�Rj�z|pBlhLµ�s � % i�sr¿%jmiÆftnBh�joiqp%°�h�ft¿%j % i�sCh�sw°os%¹>l ­ �§ â ¥ �w¦ à ¦ £ § ¤xà Ü �§ â ¥ Ü ¡��B£ ¦ ò º � � ��� ë Â��XJ º �3UOU|�%­� �%� � ¤�¯p%l��o¹`¯sHd{p%²|pCf ºO¤�p%n|°�j l sBi�h�nksrµ#ºO�'sBp °�8f>l�p%n�º%pCne¯ Z ¿If é ft®B¯kjoiql�sBn ­ d��j�èz|p%l�l�vk²xj�ê % sBnkjonIh�ftp%¹wh�f�Rjl�f�¼vk¹>prh�fgsBn|l#vknk¹tjml�l �j± � M�ELÎ � zep%l % v|²k¹gf>l�z|pC²k¹tj % i�s?s ��l ­ �§ â ¥ �w¦ à ¦ £ § ¤xà Ü �§ â ¥ Ü ¡��B£ ¦ ò º  � J?� ë  r �Â|�3^ º �`UOUBÂk­� ��· � ¤ ­ Z¼­ d{pBl�l�pC¹�&?®%s ­ �8jmµ v %�% joi3²esBvkn|¯wj�lF�¾sBiUjmi�i�s%i��Ç°os%i�i�j�°}h�fgnk®»°�sw¯wj�l ­  {Ý §O² Ü ¡ â ¢ §�õ ��¤ õ�§ Ý â à ¦ £ § ¤�kÝ�àC¤k¢ â £>¢q¢}£ § ¤eº � � ��� ë ÂI·`�wÂB� º �3UIvB�k­� �m � �Ps%nepC¹>¯�d�jmp�¿Bjoi{pCn|¯Q�%sIpCn l joft®%jon?²|p%v� ­ a'ft¯kfgnk®Tftn|lLhqpCn|°ojml�ftnQ/vk¹Àh�fgsBi�pB°�¹tj�³Ivkjmi�ftjml ­©E n�� ­ ��zks ��i�vkhp%n|¯ M!­ ¤�jmnk®Bp%vkjoi�ºIjm¯wfgh�sBi�lmºh {Ý § �q¡q¡qÙr£E¤ á ¢ §Lõ ¦EÞ ¡�´ ¦¾Þ �P¤|¤ � à Ü � òrâ ¥ § ¢}£ �wâ § ¤µ� Þ ¡ § Ý�¡ ¦ £��qà Ü �!¢ ¥k¡q� ¦ ¢ §�õ�§ â ¥ �w¦ ¡oÝ!���o£�¡�¤��q¡�º % pC®%j�l  r �XJI^ ºIÍ8s%vkjmn�º l iqpCne°�j%º ·B·`�k·�J�l jo²ki�v|p%i�& �`UOU ­ k % i�fgnk®Bjoi ­

��� � �0J r

Page 148: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� �0J �T� ¹gµ¶&?n?d�joi�¹gj3L�pO % ­ � Ü á ¡ ² Ý�àr£�� �§ ÙC£E¤ á � Þ ¡ § Ý ò ­�Î °3\Viqp�µ]a'fg¹t¹�ºo�8joµ¸·s%i+L�º �3UIvO^k­� ��� �T� ¹gµ¶&?n2d�joi�¹gj3Lrp % ­ d�sBvkn|¯wj�¯�¯wftl�h�p%n|°�j/ß � l�s �Eh��ǯkjm°�f>l�fgsBn�Í8jojm¯h�¹k?sB¹gsIRs%n�¯wjm°os?¯kfgnk® ­ �+�u�u���wÝ�àC¤k¢}ÚàB� ¦ £ § ¤|¢ § ¤Q��¤ õ�§ Ý â à ¦ £ § ¤£� Þ ¡ § Ý ò º JI· � ÂI� ë§r J � r · º �3UIUOvk­� �3v �T� ¹gµ¶&?n3Í ­ d�joi�¹gj3L�pO % ­Nl p%°}h�s%i�fgn|® % s%¹�&In|sORftp%¹tl�sr¿%jmiƱenkfÀh�j'±ejo¹>¯kl ­uº ¡ ÜEÜ � ò ¢ ¦ ¡ â �e¡�� Þ ¤e£��qà Ü ¥ § � Ý}¤�à Ü ºJXv ë �3^I�CÂ����3^I� U º �3UOv r ­� � r �T� ¹gµ¶&?n�Í ­ d�joi�¹gj3Lrp % ­Dl pB°}h�s%i�fgnk® % sB¹K&?nksITf>pC¹>l8sr¿Bjoi8¹>pCi�®%j!±enkfÀh�jW±|jm¹t¯|l ­ ÛÈà ¦EÞ ¡ â à ¦ £��}¢ §LõQ�§ â ¥ � Ú¦ à ¦ £ § ¤eº ·�J ë»r �mÂ�� r ÂI� º �`U r ­� �3^ �T� ¹gµ¶&?nÈÍ ­ d�joi�¹tj0Lrp % º�Í�s%²xjoi�hH� ­�Î ° � ¹gftjm°oj%º�pCn|¯�a'jon�Lt� ­¼ZW­ ¿rpCn M ft¹t²esBi�® ­HG n6h�z|j¼ftnkzkjoi�jonIhVfgnh�h�i�pB°}hqpC²kft¹gfghq&#s ��°�jmi�hqpCftn/°�sw¯wftnk® % i�s%²k¹tj0½l ­ �+�u�u�°�wÝ�àC¤k¢oà%� ¦ £ § ¤k¢ § ¤��}¤ õ�§ Ý â à ¦ £ § ¤�� Þ ¡ § Ý ò º · J � ÂB� ë ÂO^OJ��ÂI^Ov º Î p�& �3U r ^k­� �3U � Í8ft°qz|p%i�¯ � ­ d�¹tp%z?vwh ­ � Þ ¡ § Ý ò àr¤xÙQ �Ý�à%� ¦ £���¡ §Lõ ��Ý}Ý § Ý �¶§ ¤ ¦ Ý § Ü �§ Ù%¡�¢ ­�Z ¯|¯wftl�s%n�� é jml�¹gj3&%º�Í�j�p%¯wftnk®eºÎ p%l�l�pB°qzIvel�joh�h�lmº �3UI^%Âk­� · � Î pCn?vkjo¹8d�¹tv� pCn|¯_kwp % pCh�z_S#p%nkn|p%n ­ �'j�l�ft®%nkftnk® % i�sB®%iqp ½l�h�z|prh#°qzkj�°�L)h�zkjoftiVµ�sBi�L ­ ¥ § � Ý}¤xà Ü §�õ¦¾Þ ¡T� � Û6º JI· � ��� ë ·OvOU��w· U|� ºX�Bp%nIvepCi+& �`UOUI�w­� ·w� � Î pCn?vkjo¹Nd�¹tv��º Î ft°qz|p%jo¹©¤�vk²�&%ºxpCn|¯�Í�sBnkfÀh�hPÍ�vk²|fgnh�¾jm¹t¯ ­ kwjo¹K�½��h�jml�h�ftnk®�¾C°�s%i�i�jm°}h�fgn|®/µ�fgh�z�p %�% ¹tft°mprh�fts%nelh�s½n?v�Rjoi�ft°mpC¹ % i�s%²k¹tj0½l ­ ¥ § � Ý}¤xà Ü §Lõ)�§ â ¥ �w¦ ¡oݼàr¤xÙ½� ò ¢ ¦ ¡ â ���o£�¡�¤���¡�¢}º J rk� ÂI� ë ��JIU��w�OUB� º �3UIU%Âk­� ·%· � �VpCn�d�s%nkjmz ­:l fgne¯wfgn|®3l�RsIs%h�zèfgnIh�jm®%jmi�lPfgn»l�zks%i�hPftnIh�joi�¿rpC¹>lVv|l�ftnk®���Í M ¯wjm°osw¯wfgn|® ­  �Ý § �q¡q¡�ÙC£E¤ á ¢ §�õ¦¾Þ ¡�¡ ¿B¤xÙ��P¤|¤ � à Ü � � Û � òrâ ¥ § ¢q£ �wâ § ¤£� Þ ¡ § Ý ò §�õ��§ â ¥ �w¦ £E¤ á º % p%®%jml ·OvB�`�k· r · º · O I ­� ·C � Í ­ � ­ d�sIl�j�pCne¯¦� ­ S ­ Í8p�&X�q��z|p%v|¯wz?vki�f ­gG n�pÌ°�¹>p%l�l/sO�Pjmi�i�s%iR°�sBi�i�jm°�h�ftnk®È²kftn|p%i�&�®Bi�sBv % °�sw¯wj�l ­��¤ õ�§ Ý â à ¦ £ § ¤»àC¤xÙ �§ ¤ ¦ Ý § Ü º  ë vO^�� r U º �`UOv ­� ·�J � �Bjoz|sBl�zIvepQd�i�v|°�L6pCn|¯ Î s%n|fu�'pCsBi ­�M zkjRz|pCiq¯wnkj�l�lPs �{¯wjm°osw¯wfgn|®3¹tftnkjmp%i!°osw¯wjml!µ�fgh�z % i�j % i�sw°�jml�l�fgnk® ­�+�u�u���wÝ�àC¤k¢oà%� ¦ £ § ¤k¢ § ¤R�}¤ õ�§ Ý â à ¦ £ § ¤�� Þ ¡ § Ý ò º ÂOv � ·%� º Î pCiq°qz �`UOU ­� ·%� � a'jonki�f:��s%zkjmn ­ � �¶§ � Ýq¢o¡Ì£E¤ �§ â ¥ �w¦ à ¦ £ § ¤�à Ü � Ü á ¡ ² Ý�àr£��2ª �wâ ² ¡oÝ!� Þ ¡ § Ý ò ­ \Viqp%¯wv|pCh�j M j�ê?hqlUftnÎ prh�z|j0½prh�ft°ml!Ò y í�ºVk % i�ftnk®Bjoi¶�¶joi�¹>pC®|º�d�jmi�¹tfgn�º �3UOUBÂk­� · v � M z|sO½p%l Î�­ ��sr¿%joiVpCn|¯t�%s�& ZW­­M zksIRpBl ­ � Ü ¡ â ¡o¤ ¦ ¢ §�õ ��¤ õ�§ Ý â à ¦ £ § ¤¸� Þ ¡ § Ý ò ­#é ft¹gj3&?�Ævk²k¹tftl�zkftnk®|º�'joµ¸·s%i+L�º �3UOU|�%­� · r � �Æzkft¹g¹tf % j:�Pjo¹>l�p%i�h�j ­8Z n6pC¹t®%jm²kiqpCf>°Pp %�% i�sBp%°qz4h�sRh�z|jWp%l�l�sw°�f>prh�fgsBnUl�°qzkj0Rjml{sO��°osw¯wfgn|®/h�zkjosBi�& ­   Þ £ Ü £ ¥x¢ØP¡}¢o¡qàrÝ�� Þ Ø'¡ ¥ § Ý ¦ ¢}ºVk?v %V% ¹ ­�� º �3U r Âk­� · ^ � Í8ft°qz|p%i�¯ Z¼­ �Pj Î ft¹t¹gs\p%n|¯:Í�f>°qz|pCiq¯g� ­ ¤�f % h�sBn ­iZ % i�s%²|p%²kfg¹tf>lLh�ft°�i�j0½pCi+LQsBn_pC¹t®%jo²|i�p%ft° % i�s%®Bi�pOh�jml�h�ftnk® ­ ��¤ õ�§ Ý â à ¦ £ § ¤2 �Ý § �q¡�¢�¢}£E¤ á�À ¡ ¦ ¦ ¡�Ýq¢}ºorw� JI� ë �`U%Â����3UI� ºI�Bvknkj �`U r ^k­� · U � E ¹�&Bpe�Pv�Rjoi�ºs�VpCnkftjo¹tj Î ft°m°�f>pCn|°ofgseºÆpCne¯ Î pB¯wz?v!k?ve¯kpCn ­ a'p%i�¯knkjml�l¼sO�Vp %�% i�s�ê?f�½prh�fgnk®Èh�zkj?Rftnkf�/v� ¯wf>lLhqpCn|°oj¼sO��p4¹tfgn|jmpCi!°�sw¯wj ­  �Ý § ��¡q¡qÙr£E¤ á ¢ §Lõ ¦EÞ ¡{Áo¢ ¦EÞ �+�u�u�J� òrâ ¥ § ¢}£ �wâ § ¤�× § � ¤�Ù%à ¦ £ § ¤k¢ §�õ�§ â ¥ �w¦ ¡oÝ!���o£�¡�¤��q¡�º % pC®%j�l J r �`�XJX^ J º �3UIUOU|­�  � E µ{pCn Î�­ �Pvkvkiql�Rp ­ �T¡�� § Ùr£E¤ á �§ Ù%¡�¢ õ Ý § â � � Ý}ôr¡�¢4àC¤xÙ � ò � Ü £�� �§ Ù%¡�¢ ­ �zV�Xh�zkjml�f>loº � ftn|¯wzksr¿Bjon� nkft¿%joiql�fÀhq&4sO� M jm°qzkn|s%¹ts%®O&Bº �3UOUBÂk­� Âk� � � i�ftjo¹ l jmfg®Bjèp%n|¯¸��pCiql�h�jon¸¤�vkn|¯ ­ÂG n2h�zkjèzepCiq¯wnkjml�l4sO�¼°�sI % vwh�ftnk®Qh�zkj % jmi�½pCn|jonIh)sO�Wi�p%n|¯wsO½pCh�i�ft°ojml ­ �§ â ¥ �w¦ à ¦ £ § ¤xà Ü �§ â ¥ Ü ¡��B£ ¦�ò º v � ·%� ë � �Ã���mÂB· º �`UOU r ­� ÂB· � Z i�nepC¹>¯ws_\!pCiq°�f>p6pCne¯ca8jon|nkfgn|®ekIh�ft°qzIh�jmnksCh�z ­tZ h�srµ�jmi¼sO� Z i�h�fgn��¹kw°qz|i�jmfgjmiWj�ê?h�jmn|l�fgsBn|lWsO�¶�¾vkn|°}h�fgsBn±ejo¹>¯kl8prh�h�p%fgnkftnk®Th�z|j:�'i�fgn��¾jo¹>¯��Ä�P¹ÄÅpB¯wvwh8²xs%vkne¯ ­ �}¤eô�¡o¤ ¦ £ § ¤�¡}¢!ÛÈà ¦¾Þ ¡ â à ¦ £��qàB¡�º ��·k� ë ·w�%�#�w·B·%· º �3UOUI�w­

��� � �0JX^

Page 149: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� Â% � Z i�nepC¹>¯ws¦\!pCiq°�f>p�pCn|¯ga'jonknkftnk®µk?h�f>°qzBh�jonks%h�z ­mG nïh�z|jÈp%l�&� % h�sCh�ft°�²ejmz|p�¿?fgsBi½s �Wl�sIRj�h�srµ�joiqlRs ��¾v|n|°}h�fgsBn)±ejo¹>¯kl�sr¿%jmi�±|nkfgh�j!±|jm¹t¯kl ­ ¥ § � Ý}¤�à Ü §Lõ ª �wâ ² ¡oÝ�� Þ ¡ § Ý ò º vk� � ·%� ë · JI^��k· r  ºI�Pjm°oj0/²ejmi �3UOUIvk­�  J � ��joh�jmiH\Vj0�Rjo¹t¹ º�Í�ft°qzepCiq¯�¤�f % h�sBn�º~Í�s%n|fÀh�h!Í�v|²kfgn��¾jo¹>¯~º Î p%¯kzIvek?v|¯kp%n�º~pCn|¯ Z ¿?f é ft®B¯kjoiql�sBn ­ k?jm¹�½�h�jml�h�ftnk®�¾C°�sBi�i�jm°�h�ftnk®£�¾s%i % s%¹�&In|sORftp%¹tlèpCn|¯Æ�¾s%i»p %�% i�s�êwf�RpCh�jc�¾v|n|°}h�fgsBn|l ­ÇE nn �Ý § ��¡q¡qÙr£E¤ á ¢ §Lõ ¦¾Þ ¡�©¨Æ¡o¤ ¦ ò � Þ £EÝ�Ù��P¤|¤ � à Ü � � Û � òrâ ¥ § ¢}£ �wâ § ¤!� Þ ¡ § Ý ò §Lõ��§ â ¥ �w¦ £E¤ á º % p%®%jml ÂI·`�XJ?· ºX�8joµ G i�¹gj�pCn|lmº¤�s%vkf>l�ftp%n|pkº v � ^RÎ p�& �`UOUk�B­� ÂB� � ��joh�jmi�\Vj0�Rjo¹t¹�p%n|¯ Î p%¯kzIv[k?ve¯kpCn ­ a8ft®%z|¹K&Ìi�j�l�ft¹tfgjmnBh¼°os%i�i�j�°}h�s%iql��¾sBi�/vk¹Àh�fg¿rp%i�f>prh�j % sB¹K&?nksITf>pC¹>l ­��¤ õ�§ Ý â à ¦ £ § ¤2 �Ý § �q¡�¢�¢}£E¤ á�À ¡ ¦ ¦ ¡�Ýq¢}º JB � J?� ë �3vOU��x� r J º�k?j % h�j0/²ejmi �3UIUB·k­� ÂOv �T� ­ � ­ \Vft¹g²xjoi�h ­¶Z °osO % p%i�f>l�sBn)sO�l�ft®%n|p%¹g¹tftnk®4pC¹ % z|p%²ejoh�l ­¶º ¡ ÜEÜ � ò ¢ ¦ ¡ â �e¡q� Þ ¤|£��qà Ü ¥ § � Ý}¤�à Ü º Âk� ë � J���B·%· º Î p�& �3UI�%·w­�  r � ÎQ­ � ­ � ­ \Vs%¹>p�& ­ �8s%h�j�l�s%n�¯wft®%fgh�pC¹�°osw¯wfgn|® ­  �Ý § �q¡q¡�ÙC£E¤ á ¢ §Lõ ¦¾Þ ¡H��Ø��{º  r?ë vB� r?ºh�Bvknkj �3UOJIUk­� ÂO^ � G ¯kjm¯¦\VsB¹t¯wi�jof>°qz\p%n|¯[¤�jms%nkf>¯ Z¼­ ¤�jo¿?ftn ­eZ z|pCiq¯�� °�sBi�j % i�j�¯wft°mprh�j)�¾s%iRpC¹t¹�sBnkj#�ǵ{p�&t�¾vkne°}h�fts%nel ­eE n {Ý § �q¡q¡qÙr£E¤ á ¢ §Lõ ¦¾Þ ¡!�¬¨Æ¡o¤ ¦ ò ×Æ£EÝq¢ ¦ �P¤|¤ � à Ü � � Û � òrâ ¥ § ¢}£ �wâ § ¤È� Þ ¡ § Ý ò §�õ��§ â ¥ �w¦ £E¤ á º % p%®%j�l·B�`�wÂB· ºhk?j�prh�h�¹gjBº é p%l�zkfgn|®Ch�sBn�º ��� � � r Î p�& �3UI^OUk­� ÂOU � G ¯kjm¯g\Vs%¹>¯wi�jmft°qz�ºs�VpCn|pÌÍ�s%n�º�p%n|¯ Î p%¯wz?v£k?v|¯kp%n ­ ��z|fgnkj�l�j�i�j0½pCftn|¯wjmi�ftnk®Ìµ�fÀh�z�jmi�i�s%iql ­ ���u�j��kÝ�àC¤k¢oà%� ¦ £ § ¤k¢ § ¤��}¤ õ�§ Ý â à ¦ £ § ¤¸� Þ ¡ § Ý ò º JXv � �%� ë �mÂB �x�mÂBÂO^ º��Bvk¹�& · O I ­ � êIh�jon|¯kjm¯6¿Bjoiql�fts%n6p %V% j�pCiqlpBl � �¶�¶� M j�°qzknkf>°opC¹�Í8j % s%i�h M Í UO^ � vB· ��Í�jo¿?f>l�fts%n JI� º�ÉhÊXÊXË�Ì�Í�Í�Î�Î�Î�Ï�Ð�Ñ�Ñ�ÑbÏ�ÒIÓ­ÔOÕ�Ê�Ö×Ô Ð Ö�ÏqØXÐhÍIÐVÑXÑXÑ ­� J � G ¯kjm¯¦\VsB¹t¯wi�jof>°qz�ºÍ�sBnkfgh�hTÍ8vk²kftnh�¾jo¹>¯~º�p%n|¯ Î pB¯wz?vµk?v|¯|pCn ­ ¤�j�pCi�nkfgn|® % sB¹K&?nksIRftp%¹tl¼µ�fÀh�zµ³Ivkjoi�ftjmlmëM z|j6zkfg®Bzk¹�&Qnks%f>l�&\°opBl�j ­ �h���VÛÙ¥ § � Ý}¤�à Ü § ¤µ�¼£>¢o��Ý�¡ ¦ ¡�ÛÈà ¦¾Þ ¡ â à ¦ £��}¢}º �m � J?� ë �CÂB���w� r ºb�8sr¿Bj0/²ejmi· O I ­� J|� � � ­ � ­ \Vs %�% p ­ ��sw¯wjml�p%l�l�sw°oftpCh�jm¯Vµ�fgh�z¼¯kfg¿?f>l�sBi�l ­  �Ý §I² Ü ¡ â ¢ §Lõ �}¤ õ�§ Ý â à ¦ £ § ¤_�kÝ�àr¤|¢ â £>¢q¢}£ § ¤eº �m � ��� ë ·B·`�·Ov º �`U rOr ­� JI· � �VpCn|fgjm¹N\Vs%i�jon|l�h�jmfgn6p%n|¯?�8jmp%¹B�xftjoi�¹gjmi ­8Z °o¹tpBl�l{sO�ujmi�i�s%i�� °�s%i�i�jm°}h�fgn|®¼°�sw¯wj�l{fgn)Ú×Ûäl�&�/²esB¹tl ­ ¥ § � Ý}¤xà ܧ�õ ¦¾Þ ¡W� § ��£�¡ ¦�ò õ�§ Ý��}¤�Ù � ¢ ¦ Ý}£�à Ü àC¤xÙ���¥%¥ Ü £�¡qÙ½ÛÈà ¦¾Þ ¡ â à ¦ £��}¢}º U ë · r �w·k�0J ºI�%vkn|j �3UOv|�%­� JB � �Pf�Rp?\Vi�fg®Bs%i�fgjm¿ ­Dl p%°�h�s%i�f��mprh�fgsBn�s � % s%¹�&?nksORf>pC¹>l8sr¿%jmi'p½±enkfÀh�jW±|jm¹t¯èpCn|¯6h�zkjTl�sB¹gvwh�fgsBn|lPs �Æl�&?l�h�j3½lsO��pC¹t®%jm²kiqpCf>°8j3³Iv|pCh�fts%n|l ­ �kÝ�àr¤|¢ Ü à ¦ ¡qÙ õ Ý § â.Ü à�¥�£>¢� r£©ª/à � � Þ ¤ ò   Þ �~¡ â £E¤xàCÝ § ô À ¡o¤|¤e£E¤ á Ý�à%Ùr¢�  § á §2Ý ¦ Ù%¡oÚÜ ¡�¤e£ ò à½ÛÈà ¦ ¡ â à ¦ £�� Þ ¡�¢�  § á § ��¤k¢ ¦ £ ¦��w¦ àT£ â ú{Þuú � ú � ¦ ¡q  Ü § ôrà���ª �|�e�?Ø!º �� r?ë · � r U º �`UO^ Je­� JOJ � �¶jmn�Lrprh�jml�pCn¦\Vvki�v|l�µ�pOTf º Z RfÀh)kwpCzepCf º�p%n|¯ Î pB¯wz?v¦k?v|¯kp%n ­ k?s �Eh��ǯwj�°�f>l�fts%nQ¯kjm°�sw¯wftnk®�sO����zkfgn|jml�jÍ8j0½pCftn|¯wjmiV°os?¯kjml ­�E nc �Ý § ��¡q¡qÙr£E¤ á ¢ §Lõ ¦EÞ ¡TÁoßr¢ ¦ ���u�u�ä� òrâ ¥ § ¢}£ �wâ § ¤è× § � ¤xÙ%à ¦ £ § ¤k¢ §�õR�¶§ â ¥ �w¦ ¡oÝ�~��£�¡o¤x�q¡oº % p%®%jml ��� U��x�3vI^ ºIÍ�jm¯wsBn|¯ws)d�jmpB°qz�ºo��pC¹tf�¾sBi�n|ftp|º ��· � �0J �8sr¿Bj0¼²xjoi · O O ­� JI� � �¶jmn�Lrprh�jml�pCn�\Vvki�v|l�µ�pOTfIpCn|¯ Î p%¯wz?v�k?v|¯|pCn ­ E % i�sr¿%j�¯!¯wjm°os?¯kfgnk®'s �kÍ�joj�¯��qk?s%¹tsORs%n#p%n|¯#pC¹t®%jm²ki�p%ft°#�®BjosITjoh�i�ft°!°os?¯kjml ­ �+�u�u���wÝ�àC¤k¢oà%� ¦ £ § ¤k¢ § ¤R�}¤ õ�§ Ý â à ¦ £ § ¤£� Þ ¡ § Ý ò º JI� ë � r � r �x� r v rwº �3UOUIUk­� JIv � �¶jmn�Lrprh�jml�pCnQ\Vvki�v|l�µ�pORfxp%n|¯ Î pB¯wz?vQk?v|¯kp%n ­ ¤�ftl�h�¯wj�°�sw¯wftnk®/p%¹g®Bs%i�fÀh�z�½l8�¾sBi�°�jmi�hqpCftnU°�sBn|°opCh�jmn|prh�jm¯°osw¯wjml ­  �Ý § ��¡q¡qÙr£E¤ á ¢ §�õ ¦¾Þ ¡_¡ ¿%¤�Ùc�P¤|¤ � à Ü � � ÛÓ� òrâ ¥ § ¢q£ �wâ § ¤p� Þ ¡ § Ý ò §Lõ[�§ â ¥ �w¦ £E¤ á º % p%®%j�l�`^k�#�x�3U º · O I ­� J r � �¶jmn�Lrprh�jml�pCn[\Vvki�v|l�µ{p Rf¶pCne¯ Î p%¯wz?vck?v|¯kp%n ­ � ê?h�jmn|l�fgsBn|lVh�s3h�z|jF�%sBzkn|l�s%n̲esBvkn|¯ ­ ÛÈàr¤ � ¢o��Ý}£ ¥ ¦ ºl jo²ki�v|p%i�& · O �%­� JI^ � Í8ft°qz|p%i�¯ é´­ a'pO�Rftnk® ­ � i�i�sBi��Pj�h�j�°}h�fgnk®6p%n|¯ � i�i�s%i{��s%i�i�j�°}h�ftnk®2��s?¯kjml ­�º ¡ ÜEÜ � ò ¢ ¦ ¡ â �|¡q� Þ ¤|£��qà Ü¥ § � Ý}¤xà Ü º · U ë �3J r ���3v º Z % i�ft¹ �`UB� ­� JIU � Z¼­ a8sw°3³Bv|jonk®Bzkj0 ­ ��sw¯wjml�°os%i�i�j�°}h�jovkiql�¯¬à jmi�i�jovkiql ­ � Þ £ á�Ý�¡�¢Fâã 8àrÝ}£>¢�ärº · ë �0J r �x��� v º �3UI� U|­

��� � �0JXU

Page 150: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� � � M sOåa�æCz|s%¹>¯?hmº©� ­ a ­ ¿�p%ne¤�fgnIh�º�pCne¯èÍ�v|v|¯_��jm¹g¹tf�L�pBpCn ­�Z ¹t®%jm²ki�p%ft°/®%jmsORj�h�i�&�°osw¯wjml ­�ç àr¤�Ù ²q§m§   §�õ�§ Ùr£E¤ á � Þ ¡ § Ý ò�è � Þ àq¥ ¦ ¡�Ý�ßO¢rº �3UIUO^k­� �w� � Í8v|l�l�jo¹t¹ E % p%®%¹tftpO�0�msTp%n|¯ Z ¿?f é ft®B¯wjmi�l�s%n ­ �µé¸d��j�:fK�uê¸i�j3³Ivkfti�jml{j�ê % s%nkjmnIh�f>pC¹�°ofgiq°�vkfgh�lmës�PjoiqpCn��¯ksORfK�mfgn|®)h�zkj ± G Í°¤�j0�½p ­  �Ý § �q¡�¡qÙC£E¤ á ¢ §�õ ¦EÞ ¡)¿Ië ¦EÞ �P¤|¤ � à Ü � � Û � òrâ ¥ § ¢}£ �wâ § ¤f� Þ ¡ § Ý ò §�õ�§ â ¥ �w¦ £E¤ á º % pC®Bjml ·%· �w·B· U º Î p�& �`UOU r ­� �%· � kwjo¹�Tjmi Î�­ �%sBzkn|l�s%n ­FZ n|joµ v %�% joi¼²xs%v|n|¯_�¾s%iWjmi�i�s%i��Ç°os%i�i�j�°}h�fgnk®)°�sw¯wjml ­ �+�u�u�ì�kÝ�àC¤k¢oà%� ¦ £ § ¤k¢ § ¤��¤ õ�§ Ý â à ¦ £ § ¤£� Þ ¡ § Ý ò º ^ ë · Â��k· rwº �`UOvB·k­� �C � kwjo¹�Tjmi Î�­ �Bs%zkn|l�s%n ­�E % i�sr¿%j�¯�p%l�&X % h�sCh�ft°!²xs%vkne¯klD�¾sBi'jmi�i�s%i��Ç°os%i�i�j�°}h�fgnk®T°�sw¯wj�l ­ �+�u�u�í�wÝ�àC¤k¢oà%�oÚ¦ £ § ¤|¢ § ¤R��¤ õ�§ Ý â à ¦ £ § ¤£� Þ ¡ § Ý ò º U ë �3UI^��k· � º �`UOv%Â|­� ��J � \ ­ �Pp�¿?f>¯ l s%i�nkj0&��Bi ­ �§ ¤x�qà ¦ ¡�¤�à ¦ ¡qÙ �§ Ù%¡�¢ ­�Î2EqM �Æi�j�l�lmºo��p /²ki�f>¯w®Bj%º Î�Z º �3UOvIvk­� �%� � \ ­ �Vp�¿If>¯ l s%i�nkj0&?�%i ­ \VjmnkjoiqpC¹tf��ojm¯?Rftnkf�¼v� ¯wf>l�h�pCne°�j/¯kjm°�sw¯wftnk® ­ ���u�j�í�kÝ�àC¤k¢oà%� ¦ £ § ¤k¢ § ¤��}¤ õ�§ Ý}Úâ à ¦ £ § ¤£� Þ ¡ § Ý ò º ��· � ·%� ë ��·%���x�mÂ|� º Z % i�fg¹ �`UOvIvk­� � v � �XæCi�n��Bv|l�h�jml�jon ­�Z °o¹tpBl�l�s �e°os%n|l�h�i�v|°�h�ft¿%j�pBl�&� % h�sCh�f>°op%¹g¹�&#®%s?sw¯Wp%¹g®Bjo²kiqpCf>°Æ°os?¯kjml ­ �+�u�u�i�kÝ�àr¤|¢oà%� ¦ £ § ¤k¢§ ¤R��¤ õ�§ Ý â à ¦ £ § ¤�� Þ ¡ § Ý ò º �3^ ë vI�%·`�hvB�Ov º �`U r ·k­� � r � �XæCi�n��Bv|lLh�jml�jon ­:G n6h�zkjT°osO % ¹tj�êwfghq&3sO�Ưwjm°osw¯wfgn|®)Í�jmjm¯��qk?s%¹tsORsBn�°�sw¯wjmlT��°os%i�i�j�l % ­ ��­ ���j�u�î�wÝ�àC¤k¢}ÚàB� ¦ £ § ¤|¢ § ¤Q��¤ õ�§ Ý â à ¦ £ § ¤£� Þ ¡ § Ý ò º ·%· � ·B� ë ·C r �w·%ÂO^ º Î pCiq°qz �`U r vk­� � ^ �T� i�f>°qz_S#p%¹Àh�s �¾jmn ­ ��sB¹K&?nksIRftp%¹� h�f�Rj/i�jm¯wve°}h�fts%nelH�¾i�sI®¼vk¹gh�ft¿rpCi�ftpCh�jTh�s�²kfK�PpCne¯Èvkn|fg¿rpCi�f>prh�jTftnBh�jo®Bi�p%¹

% s%¹�&?nksORf>pC¹¼��pB°}h�sBi�f��mpCh�fts%n ­ �h���VÛï¥ § � Ý}¤�à Ü § ¤ �§ â ¥ �w¦ £E¤ á º �0J � ·B� ë JIvOU��XJX^OU º �3UO^I�w­� � U �T� i�f>°qz�S#p%¹Àh�s �¾jon)pCn|¯Fd{p%i�i+& M iqpC®%jmi ­ ��sI % vwh�ftnk®Tµ�fÀh�z % s%¹�&In|sORftp%¹tl�®%ft¿%jmn½²�&½²k¹tpB°�L/²xs�êwjmlj�¾s%i�h�zkjmfgijm¿rpC¹tv|prh�fgsBn|loëH\Vi�j�prh�j�lLh#°�sI�TsBnȯwft¿?ftl�s%iqloº×��pB°}h�sBi�f��mpCh�fts%n�º~l�j % p%i�pCh�fts%n6sO�Æn?v�Rjoiqprh�sBi�lPpCn|¯è¯wjon|sORf�neprh�sBi�l ­ ¥ § � Ý}¤xà Ü §Lõ � òrâ ²q§ Ü £�� �¶§ â ¥ �w¦ à ¦ £ § ¤|º U � ÂI� ë  �#�?ÂI· º �3UIU ­� v � \ ­ ¤ ­ S#prh�l�½pCn�º Î ft°qzepCjo¹ ZW­×M lq��pBl�½pCn�º|pCn|¯�kwjoi�®%j�\ ­ �P¹ÄÅpB¯wvwh ­{Î s?¯kvk¹tp%i'°�v|i�¿Bjml8p%n|¯�°�sw¯wjml'µ�fÀh�zp % s%¹�&?nksORf>pC¹�°�sBn|l�h�i�v|°}h�fgsBn ­ ���u�u���wÝ�àr¤k¢oàB� ¦ £ § ¤|¢ § ¤R��¤ õ�§ Ý â à ¦ £ § ¤�� Þ ¡ § Ý ò º  ë ÂI�CÂ��wÂB�B� º �`UO^ Je­� vk� � Í'pC¹K�VS)ðsCh�h�joi ­ Z vkn|fÀ±|j�¯W¯wj�l�°oi�f % h�fts%n#sO�kpCn#joi�i�s%i�¹tsw°oprh�fgn|® % i�s?°ojm¯wv|i�jb�¾sBi�¹tfgnkj�pCiu°�sw¯wjml ­ E n� �Ý § �q¡q¡qÙr£E¤ á ¢§�õ ¦¾Þ ¡��}¤ ¦ ¡oÝ}¤xà ¦ £ § ¤�à Üuñ § Ý� r¢ Þ § ¥ § ¤�� Ü á ¡ ² Ý�àC£��VàC¤xÙ �§ â ² £E¤�à ¦ § Ý}£�à Ü �§ ÙC£E¤ á � Þ ¡ § Ý ò º % p%®%jml �B�mÂ����%� r?º�¶sBnkjml�zIh�p��¶sw¯kpkºod�v|¹g®IpCi�ftp|º �`UOUB·k­� vB· � Í'pC¹K�¶S)ðs%h�h�joi ­Ql pBlLhW®Bjonkjmi�p%¹gf��oj�¯tRftnkf�¼v� ¯wf>lLhqpCn|°oj4¯wjm°osw¯wfgn|®6s �8pC¹t®%jm²ki�p%ft°T®BjosORjoh�i+&ÈpCn|¯»Í�jmjm¯��kws%¹tsORs%n�°�sw¯wj�l ­ ���j�u�.�kÝ�àr¤|¢oà%� ¦ £ § ¤k¢ § ¤?�}¤ õ�§ Ý â à ¦ £ § ¤£� Þ ¡ § Ý ò º J?· � ÂI� ë§r ·k�Ã� r  rwº Î p�& �`UOUOv|­� v% � Í'pC¹K��S)ðs%h�h�jmi#pCn|¯ Z ¹tj�êkp%n|¯wjoiT�p%i�¯h& ­)Z ¹t®%jo²|i�p%ft°Tl�sO�Eh�� ¯wjm°oftl�fts%n»¯wjm°os?¯kfgnk®�sO��Í�jmjm¯��qk?s%¹tsORsBnè°�sw¯wj�l ­ {Ý § �q¡q¡qÙr£E¤ á ¢ §�õ ¦¾Þ ¡H¡Oò ¦EÞ �P¤|¤ � à Ü � ÜEÜ ¡oÝ ¦ § ¤ �¶§ ¤ õ ¡oÝ�¡o¤x�q¡ § ¤ �¶§ â/âT� ¤|£��qà ¦ £ § ¤ è �¶§ ¤ ¦ Ý § Ü àr¤�Ù �§ â ¥ �w¦ Ú£E¤ á º % pC®Bjml vB·B�`�hv%ÂB� º G °�h�s%²xjoi · O I ­� v J � a ­ S!i�f>l�zknepkºId ­ S!i�f>l�zkn|pkºXS ­ �Ä· ­ ¤�ftn�ºwpCn|¯)� ­ ��� ­ kwvkn ­ �§ â ¥ �w¦ à ¦ £ § ¤�à Ü ª �wâ ² ¡�Ý�� Þ ¡ § Ý ò àr¤xÙ{�¼£ á £ ¦ à Ü�x£ á ¤�à Ü  �Ý § ��¡�¢q¢}£E¤ á óQ×�àr¢ ¦ � Ü á § Ý}£ ¦¾Þ?â ¢èàr¤�Ùe��Ý}Ý § Ý �§ ¤ ¦ Ý § Ü �e¡q� Þ ¤|£«ó � ¡}¢ ­ ��ÍD�p�Æi�j�l�l E n|° ­ ºDd�s?°mpÍ'prh�sBn�º l ¹gsBi�f>¯kp|º �3UOUOJ|­� vB� � Z i � jmn�S ­ ¤�jmn|l�h�iqp ­sl p%°�h�s%i�ftnk®�¼vk¹gh�ft¿rpCi�ftpCh�j % s%¹�&In|sORftp%¹tl8sr¿%joi{±enkfÀh�j#±|jm¹t¯kl ­ ¥ § � Ý}¤xà Ü §Lõ��¶§ â ¥ �w¦ ¡oÝàC¤xÙ½� ò ¢ ¦ ¡ â ���o£�¡�¤���¡�¢}º  � ·B� ë ·CÂB���w· JI^ º Z % i�fg¹ �3UO^I�w­� vOv � Z i � jmn�S ­ ¤�jmn|lLh�i�p|º�a8jone¯wi�f�L é´­ ¤�jonelLh�i�p|º�p%n|¯:¤�¯p%l��o¹ts�¤�sr¿�¯pBl�� ­Ol pB°}h�sBi�ftnk® % s%¹�&?nksORf>pC¹>l�µ�fgh�z/i�pCh�fts%n|p%¹°os?j#Y4°�ftjonIh�l ­ ÛÈà ¦¾Þ ¡ â à ¦ £>¢o� Þ ¡{�P¤|¤�à Ü ¡o¤|º · vk� ë �k�����w�CÂOJ º �`UO^I·w­� v r � � ­VE}­ ¤�jo¿Bjon|l�zIh�jmfgn ­�ô ¤e£Eô�¡oÝq¢oà Ü ²q§ � ¤xÙ�¢ õ�§ Ý/� § ÙB¡}¢Ràr¤xÙ3Ù%¡�¢}£ á ¤|¢}º % p%®%j�l JIUOU���vOJI^k­ �¶sB¹gvVTj � s �8�¹tjml�lp%n|¯?a8vh�¼½pCnc� ^O^ � º �3UIUO^|­

��� � ���

Page 151: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� vO^ � Í8v|¯ws%¹K��¤�ft¯w¹{pCne¯[a'p%i�p%¹t¯c�'fgj�¯wjoi�jofgh�h�joi ­ �}¤ ¦ Ý § Ù � � ¦ £ § ¤ ¦ § ×Æ£E¤|£ ¦ ¡4×Æ£�¡ Ü Ùr¢�àC¤xÙ£� Þ ¡o£EÝ)��¥%¥ Ü £���à ¦ £ § ¤k¢ ­��pO¼²ki�f>¯w®%j � nkft¿%jmi�l�fghq&��i�jml�loº · n|¯3jm¯wfgh�fts%n�º �`UOUOJ|­� vOU � �Pprh�fפ�fgnkf>pC¹�pCne¯ Z ¹tj�êFkwp RsBi�sw¯wnkfgh�l�L�& ­ ¤�fgnkj�pCiÆ°osw¯wjml�pCn|¯Ul�v�XsO�~°qzepCiqp%°}h�joiql ­ �§ â ² £E¤�à ¦ § Ý}£��qàrº�� M sp %�% jmpCi �}­�»r � Í8ft°qz|p%i�¯¸¤�f % h�sBn ­ �8jmµË¯wfti�jm°}h�fgsBn|l3fgn-h�j�lLh�fgnk® ­pE nf�¼£>¢ ¦ Ý}£ ² �w¦ ¡�Ù �§ â ¥ �w¦ £E¤ á àr¤�Ù � Ý ò ¥ ¦ § á Ý�à�¥ Þwò º¿Bs%¹tv�Rj · s �����}Û�� � �´�~¡�Ý}£�¡�¢È£E¤]�¼£>¢��oÝ�¡ ¦ ¡èÛÈà ¦EÞ ¡ â à ¦ £��}¢Qàr¤�ÙÆ� Þ ¡ § Ý�¡ ¦ £���à Ü �§ â ¥ �w¦ ¡�Ýè���o£�¡o¤x�q¡�º

% pC®%j�l �3U|�Ã�w· ·k­IZ'Î k�º �3UIUk�B­�»r � � ¤�¯p%l��o¹`¯sc¤�sr¿�¯p%l�� ­¸G nïh�z|j_k?z|p%nknks%n2°mp % pB°�fghq&Qs �#p»®%iqp % z ­ ���u�j�>�wÝ�àr¤k¢oàB� ¦ £ § ¤|¢ § ¤!��¤ õ�§ Ý â à ¦ £ § ¤� Þ ¡ § Ý ò º ·B� ë �Ã� rwºh�Bp%nIvepCi+& �`U r Uk­�»r · � ��p%i�l�h�jmne¤�vkn|¯~ºN¤�pCne°�j l sBi�h�nksrµ#º©a8srµ{pCiq¯�� ­ S#pCi�¹gsO�uº�p%n|¯��8sIp ì�8f>l�pCn ­)Z ¹t®%jm²kiqpCf>°�Rj�h�zksw¯klT�¾sBiftnIh�jmi�pB°}h�ft¿%j % i�s?s ��l�&wl�h�j0½l ­ ¥ § � Ý}¤xà Ü §Lõ ¦¾Þ ¡T� � Û�º ÂOU � JI� ë ^I� U��h^OvI^ º G °�h�sB²ejmi �`UOUI·w­�»r  � kkpCvkn|¯kjoiql Î p%°3¤�p%nkj½pCn|¯c\!pCi�i�j�h�h:d�fti�L?zksO� ­ � Ü á ¡ ² Ý�à ­ ��z|jo¹>l�j�pR�Ævk²k¹tftl�zkftnk®_��sO % p%n�&%ºN� ­ · ­ º  iq¯j�¯wfgh�fts%n�º �`UO^I^k­�»r J � l�­ � ­ÌÎ p%° é fg¹t¹gf>p ½l¸pCn|¯õ�8jmfg¹g� ­tZW­ k?¹tsBpCn|j ­ � Þ ¡ö� Þ ¡ § Ý ò §Lõ ��Ý}Ý § Ý}Ú �¶§ Ý}Ý�¡q� ¦ £E¤ á �§ ÙB¡}¢ ­� ¹tl�jo¿?ftjoi#¾��'s%i�h�zh�¹a8sB¹g¹>pCn|¯�º Z Rl�h�jmi�¯|p �º �3UI^k�%­�»r � � l ¹ts%i�jon|°oj{�%j�l�l�fgj Î p%° é ft¹t¹gf>p ½l ­jZ h�zkjms%i�j0 s%n3h�zkjW¯kftl�h�i�fg²|vwh�fts%n�s ��µ�joft®%zIh�l{ftn�p½l�&wl�h�j3RpCh�f>°!°�sw¯wj ­º ¡ ÜEÜ � ò ¢ ¦ ¡ â ¢��|¡q� Þ ¤|£��qà Ü ¥ § � Ý}¤�à Ü º J?· ë§r U���U J ºI�IpCn?v|p%i�& �`UOv%Â|­�»r v � �Vp�¿?ft¯ Î�­�Î pCn|¯kjo¹t²|pCv� ­¸G n:p»°�¹>p%l�lRs �#pCi�fÀh�z�Rj�h�f>°6°�sw¯wj�l½pCn|¯ïp�¯wj�°�sw¯wftnk®�pC¹t®%s%i�fgh�z� ­ ���u�j��kÝ�àC¤k¢oà%� ¦ £ § ¤k¢ § ¤?�}¤ õ�§ Ý â à ¦ £ § ¤�� Þ ¡ § Ý ò º ·k� � ��� ë ^B����^I^ º��Bp%nIvepCi+& �`U r vk­�»rOr � · ­ E}­CÎ p%nkfgnRpCne¯�k?jmi�®Bj�\ ­ �P¹ÄÅpB¯wvwh ­ ¤�ftnkj�pCi¶°�sw¯wj�lup%n|¯�Tsw¯wv|¹tp%i°�vki�¿%j�l ­ ¥ ú � § ôm£�¡ ¦ ú Û�à ¦EÞ ú º Â ë · vk�B�Ã�·Ov JI º �3UI^B�w­�»r ^ � �Ip Rj�l¶¤ ­kÎ pBl�l�j0& ­ � Þ Ý�¡}¢ Þ § Ü Ù�Ù%¡q� § Ùr£E¤ á ­ÆÎ2EqM �i�jml�lmº���pO¼²ki�f>¯w®%jBº Î p%l�l�pB°qz?v|l�joh�hqloº � k Z º �`UOv%Â|­�»r U � �Ip Rj�lH¤ ­�Î p%l�l�j0& ­ k?zkfK�Eh��Çi�jm®%f>lLh�joi#l�&InIh�zkjml�ftl!p%n|¯_dD��aX¯wj�°�sw¯wftnk® ­ ���u�j�ì�wÝ�àr¤k¢oàB� ¦ £ § ¤|¢ § ¤_�}¤ õ�§ Ý}Úâ à ¦ £ § ¤£� Þ ¡ § Ý ò º ��� ë ��·%·`����· r?ºO�IpCn?v|p%i�& �`UOvOU|­� ^ � Í8s%²xjoi�h�� ­BÎ ° � ¹tfgj�°�j%º � v|®%jon|j8Í ­ Í8s?¯kj0Rft°qz�ºXa'srµ�p%i�¯RÍ�v�½l�j0&)�Bi ­ ºBp%n|¯F¤�¹ts�&w¯RÍ ­Bé jo¹>°qz ­ �'joµ2v % �% joiu²xs%vkn|¯|l�sBn#h�zkj�i�pCh�j�s �|p8°os?¯kjÆ¿?ftp8h�zkj��'jm¹tl�pCi�h�j0� Î p%° é ft¹t¹gf>p ½l�ftnkj`³BvepC¹tfÀh�fgj�l ­ ���u�u�÷�kÝ�àr¤|¢oà%� ¦ £ § ¤k¢§ ¤R��¤ õ�§ Ý â à ¦ £ § ¤�� Þ ¡ § Ý ò º ·C ë ��� r ���3vIv º �`U rOr ­� ^k� � �VpCn|fgjm¹gj Î f>°o°oftp%n|°�fts ­QM zkjUl�zks%i�h�j�lLh#¿%j�°}h�s%i#ftnQp�¹tpCh�h�f>°�j½f>l#z|p%i�¯èh�s�p %�% i�s�êwfK½pCh�jTh�s6µ�fgh�zkftnQl�sORj°os%n|l�h�p%nIh ­{E n[ �Ý § ��¡q¡qÙr£E¤ á ¢ §Lõ ¦¾Þ ¡)¡Ië ¦¾Þ �P¤|¤ � à Ü ���u�j�J� òrâ ¥ § ¢q£ �wâ § ¤è× § � ¤�Ù%à ¦ £ § ¤|¢ §�õR�¶§ â ¥ �w¦ ¡oÝ�~��£�¡o¤x�q¡oº % p%®%jml UI·`�hUO^ º��¶pC¹ts Z ¹gh�s|º¼��pC¹tf�¾sBi�nkf>pkº ^��x�%� �8sr¿Bj0/²ejmi �`UOUI^k­� ^B· � Í'p � jojm¿ Î s%hLµ�p%nkfÆp%n|¯��iqpC²kz|pOLrpCiWÍ8p%®%z|p�¿rpCn ­ Ø'àC¤xÙ § â £gæ�¡qÙ?� Ü á § Ý}£ ¦EÞwâ ¢ ­ ��p /²ki�ft¯w®Bj � nkft¿%jmi�l�fÀhq&�Æi�j�l�lmº �3UIUB�w­� ^% � � ­ � ­rÎ v|¹g¹tjoi ­�Z %�% ¹gf>°opCh�fts%nTs �od�s?s%¹tjmp%n/pC¹t®%jm²kiqp{h�s#l�µ�fÀhq°qzkfgn|®V°ofgiq°�vkfgh¶¯wjml�fg®Bn/p%n|¯Wh�sPjmi�i�s%i�¯wjoh�jm°�h�fts%n ­�+�u�u���wÝ�àC¤k¢oà%� ¦ £ § ¤k¢ § ¤ �§ â ¥ �w¦ ¡�Ýq¢}º  ë v��x��· º �3UB� J|­� ^ J � Í'p%l�¼v|lPÍ ­ �'fgjm¹tl�jon ­ �'j�°�sw¯wftnk®)°os%n|°mprh�jon|pCh�jm¯6°osw¯wjml'v|l�ftnk®?k?v|¯kp%n¬à lPpC¹t®%sBi�fgh�z� ­ ÛÈàr¤ � ¢o��Ý}£ ¥ ¦ ¢ � ² Úâ £ ¦ ¦ ¡qÙ õ�§ Ý�¥ � ² Ü £��qà ¦ £ § ¤eº Î p�& · O I ­� ^B� � �'sBpO.�8f>l�p%n3p%n|¯ Z ¿?f é fg®I¯wjoiql�s%n ­ a'p%i�¯wn|jml�l�¿wl{iqpCn|¯ksORnkjml�l ­ ¥ § � Ý}¤�à Ü §�õ��¶§ â ¥ �w¦ ¡oݼàr¤�ÙT� ò ¢ ¦ ¡ â�~��£�¡o¤x�q¡�¢}º JIU � ·%� ë �3JIU��x�3v r?º G °}h�sB²ejmi �3UOUOJ|­� ^Ov � Í8vkv|¯g��jo¹t¹gf�Lrp%p%n ­]G nï¯wj�°�sw¯wftnk®»¹gftnkj�pCi4°�sw¯wj�lR²�&Qjoi�i�sBi½°�s%i�i�jm°}h�fgn|® % p%fgiql ­ �Æi�j % i�ftnIhmº � ftn|¯wzksr¿Bjon� nkft¿%joiql�fÀhq&4sO� M jm°qzkn|s%¹ts%®O&Bº �3UO^I^k­

��� � ���k�

Page 152: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� ^ r � é´­Æé j�l�¹tj0&[��joh�joiql�s%n ­ � n|°�sw¯wftnk®�pCne¯Qjoi�i�s%i��Ç°os%i�i�j�°}h�fts%n % i�sw°�j�¯wvki�jml��¾s%i)d�sBl�j#����z|pCve¯wz?vki�f{°�sw¯wj�l ­�+�u�u���wÝ�àC¤k¢oà%� ¦ £ § ¤k¢ § ¤R�}¤ õ�§ Ý â à ¦ £ § ¤�� Þ ¡ § Ý ò º v ë JI� U��XJ r º �3UIv ­� ^O^ � �¶jmi�pTk ­ �ƹgj�l�l�pCne¯ é´­ ��pCi+&:a8v��×½pCn�� � ¯kl ­ ��­Vç àr¤�Ù ²q§�§   §LõT�§ Ùr£E¤ á � Þ ¡ § Ý ò âÄ¿ Þ § ÜÀ�wâ ¡�¢�ä ­ � ¹tl�jo¿?ftjoi�º�`UOUI^k­� ^OU � ÎQ­ �ƹgs%h�L?fgn ­ d�ftn|pCi+&/°osw¯wjmlƵ�fÀh�zUl % jm°ofÀ±ejm¯)RftnkfK/v�1¯wf>lLhqpCn|°oj ­ ��Ø��È�kÝ�àr¤|¢�àB� ¦ £ § ¤|¢ § ¤F��¤ õ�§ Ý â à ¦ £ § ¤� Þ ¡ § Ý ò º v ë JIJI�`��JI� º �`UOv ­� U � �IpCf�L?v�½pCi�Í8pB¯wz|p L?i�ftl�zkn|p%n ­ ��joiql�sBn|pC¹�°�sI�¼vknkf>°opCh�fts%n�º��IpCn?v|p%i�& �`UOU r ­� Uk� � E i�¿?fgn|®_k ­ Í�joj�¯ ­_Z °�¹>p%l�lWs �¶/vk¹Àh�f % ¹gj0� jmi�i�s%i��Ç°os%i�i�j�°}h�fgnk®�°�sw¯wj�l/p%n|¯Ìh�z|j3¯wj�°�sw¯wftnk®Èl�°qzkj0Rj ­ ���u�j��kÝ�àC¤k¢oà%� ¦ £ § ¤k¢ § ¤?�}¤ õ�§ Ý â à ¦ £ § ¤�� Þ ¡ § Ý ò º J ë ÂI^���JIU º �3UI��Je­� UB· � E i�¿?fgn|®_k ­ Í8jojm¯�p%n|¯¦\Vv|l�h�p�¿�k?s%¹tsORsBn ­ ��s%¹�&In|sORftp%¹Æ°�sw¯wj�l#sr¿%jmi¼°�jmi�hqpCftn»±|nkfgh�j½±ejo¹>¯kl ­ ¥ ú �h���!Û�º^ ë  O �? J º �3UOv ­� U% � Î ft°qz|p%jo¹ÆÍ8sBl�jon?²k¹tv� ­�Z ��p%l�h¼pC¹t®%sBi�fgh�z�ì�¾s%iWiqprh�fgsBn|pC¹b�¾vkne°}h�fts%n�p %�% i�s�ê?f�½prh�fgsBn|l ­FZ ¿rpCft¹tp%²k¹gj��¾i�sOÉhÊ�ÊXË�Ì�Í�ÍOÊXÉVÐXøIÖ�ù�Ï�úhÑ�ûBÏ«ü¬Ô�ÊsÏqÐXØOÒoÍ�ý�ü¼þIØIÉ�ÒoÍOÿ�������Í Ó�øIÊ�ÐVû ÍOÖ�ø�û Ð Ó���ú ÒOüDÏÄË×ûwº �8sr¿Bj0¼²xjoi �`UOUOU|­� U J � Z ¹gjoê]kwp Rs%i�sw¯wnkfgh�l�L�& ­ ��¥%¥ Ü £��qà ¦ £ § ¤|¢ §Lõ ç àrÝ â § ¤e£��2�P¤xà ÜÀò ¢q£>¢�£E¤ �§ â ² £E¤�à ¦ § Ý}£���¢»àr¤�ÙQ£E¤ �§ ÙC£E¤ á� Þ ¡ § Ý ò ­ �ÆzV�Åh�zkj�l�f>lmºV�'j % pCi�h�RjmnBh8sO� Î pCh�zkj3½prh�f>°olmº�a8jm²ki�joµ � nkft¿%jmi�l�fÀhq&Bº �3UIUO^k­� UB� � Z ¹gjoê?kwpORs%i�s?¯knkfÀhql�L�& ­8G n3h�z|j:S#pC²|pChq&BpCnel�L?ftf�¹¤�jm¿%jonel�zIh�jmfgn½²xs%v|n|¯Q�¾s%i8l % zkjoi�j % p%°�L?ftnk®|º · O O ­� UOv � Z ¹gjoêQkwp RsBi�sw¯wnkfgh�l�L�& ­©G n½h�zkjPs % h�f�¼vV sO�N�Pjo¹>l�p%i�h�jOà l¹tfgnkj�pCi % i�s%®%iqp ­ ¥ § � Ý}¤xà Ü §Lõ��¶§ â ² £E¤xà ¦ § Ý}£�à Ü� Þ ¡ § Ý ò º�� M s4p %�% j�pCi �}­� U r � Z i�n|s%¹>¯�kw°qz©ðs%n|z|pC®Bj ­ kw°qz|nkjo¹t¹gjȲejmi�j�°qzkn?vknk®»¿%sBn!LBj�h�h�joi�²ki�v|°qzkjmnBhLµ�f>°�L?¹gv|nk®%jmn ­ �P� ¦ àt��¤ õ�§ Ý â à ¦ £��qàrº� ë ��ÂOU��x�0JIJ º �3U r �%­� UO^ � � ­hM!­ kw°qz?µ�p%i�h+� ­©l p%l�h % i�sB²|pC²kft¹tftl�h�f>°Pp%¹g®Bs%i�fÀh�z�½l8�¾sBi�¿Bjoi�fÀ±x°oprh�fgsBn4s � % sB¹K&?nksITf>pC¹�f>¯wjonIh�fÀh�fgj�l ­ ¥ § � Ý}¤xà ܧ�õ ¦¾Þ ¡T� � Û6º · rw� JI� ë§r �Ã� r � rwº G °}h�s%²xjoi �`UO^ ­� UOU � Z ¯wfNk?zep Rfgi ­8E ��éi��kh� Z � � ­ ¥ § � Ý}¤�à Ü §Lõ ¦EÞ ¡H� � Û6º ÂOU � J?� ë ^OvOU���^ rOr?º G °}h�sB²ejmi �3UIUB·w­� � O � ��¹>pCve¯wj � ­ k?z|pCn|nks%n ­�Z ½prh�zkj0½prh�ft°mpC¹Ih�z|jos%i+&#s �x°�sO�/vknkf>°oprh�fgsBn ­Vº ¡ ÜEÜ � ò ¢ ¦ ¡ â �e¡�� Þ ¤e£��qà Ü ¥ § � Ý}¤�à Ü º· r?ë  r U��XJ?·C º vB·%Â��hvB� v º �`U JI^|­� � � � ��¹>pCve¯wj � ­ k?z|pCn|nks%n�º�Í�sB²ejmi�h�\ ­ \!pC¹t¹tp%®%jmimºupCn|¯ � ¹tµ¶&?nQÍ ­ d�jmi�¹tj0Lrp % ­ ¤�srµ�joi#²xs%vkne¯kl#h�s�joi�i�sBi% i�sB²|pC²kft¹tfÀhq&R�¾s%i!°�sw¯wftnk®)s%nȯwf>l�°�i�j�h�j�Rj0Rs%i+&?¹gj�l�lV°qz|pCn|nkjo¹>l ­ �}¤ õ�§ Ý â à ¦ £ § ¤�àC¤xÙ �§ ¤ ¦ Ý § Ü º � ë vI�`��� Â� �¶pCi�h E�� º �B·%·`�k�%�B· �«�¶p%i�h E�E�� º �3UIv r ­� � · � �Pft°�h�sBi�k?zksBv % ­ �'joµXpC¹t®%s%i�fgh�z�½lH�¾s%i!±en|¯wftnk®�fti�i�jm¯wve°�ft²k¹gj % s%¹�&?nksORf>pC¹>l!sr¿%joiV±|n|fÀh�j½±|jo¹>¯kl ­ ÛÈà ¦¾Þ ¡oÚâ à ¦ £���¢ §�õ)�§ â ¥ �w¦ à ¦ £ § ¤eº ��J ë JIÂB���XJOJ r?º �`UOU ­� �  � S!jmnknkjoh�zekwzIvV ­ � À § ¨¶Ú �§ â ¥ Ü ¡��B£ ¦ ò �¶§ ¤k¢ ¦ Ý � � ¦ £ § ¤ §Lõ � Ü á ¡ ² Ý�àC£���8¡ § â ¡ ¦ Ý}£�� �§ Ù%¡�¢ º ¡ ¦ ¦ ¡�Ý�� Þ àr¤¦¾Þ ¡�{£ Ü ² ¡oÝ ¦ Ú Þ àrÝq¢ Þ à â § ô º § � ¤xÙ ­ �zV�_h�zkj�l�f>lmº � nkfg¿Bjoiql�fghq&Ts �©k?s%vkh�zkjmi�nR��p%¹gfK�¾s%i�nkf>pkºX�'j�°�j0/²ejmi · O O ­� � J � S!jmnknkjoh�z é´­ k?z?v��º E ¹gf>p Z ¹tjml�zknkf�L%sr¿�º�� ­ �Pf � p�&RS!v�½pCi�ºVa8jmnknkftnk®�kIh�f>°qzIh�jmnksCh�z�ºep%n|¯R�'ftn|p�&Q�PjosB¹tp �¹tf�L�p%i ­hZ ¹tsrµ��Ç°osO % ¹tj�êwfÀhq&#p%¹g®Bs%i�fÀh�z�f�¾s%iuh�zkj�°os%n|l�h�i�v|°}h�fgsBnWs �xpC¹t®%jo²|i�p%ft°Æ®%josIRj�h�i�f>°Æ°�sw¯wj�lu²ejoh�h�jmi�h�z|p%nh�zkj�\Vft¹g²xjoi�h����Pp%i�l�z|pOTsr¿U²esBvkn|¯ ­ ���j�u�.�kÝ�àr¤|¢oà%� ¦ £ § ¤k¢ § ¤?��¤ õ�§ Ý â à ¦ £ § ¤�� Þ ¡ § Ý ò º J rw� vI� ë ·%·B·%�`�k·%· J|� ºkwj % h�j0¼²xjoi · O �%­� � � � Î pC¹gh�j�k?ftjo¿Bj0L?fgn|® ­8Z n6pC¹t®%sBi�fgh�zVÂ�¾s%i8¯wft¿?ftl�fgsBn)sO� % srµ�joi�l�jmi�ftjml ­ �§ â ¥ �w¦ £E¤ á º � ë ���CÂ������Ov º �`U r ·w­� � v � Í8ft°qz|p%i�¯�� ­ k?ftnk®%¹tj�h�s%n ­TÎ prêwf�¼v� ¯kftl�h�p%n|°�j � � nepCi+&�°�sw¯wjml ­ �+�u�u�®�kÝ�àr¤|¢oà%� ¦ £ § ¤k¢ § ¤_��¤ õ�§ Ý â à ¦ £ § ¤� Þ ¡ § Ý ò º � ë �%�3v��x�B�3^ º Z % i�ft¹ �3UIv J|­

��� � ���B·

Page 153: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� � r � ÎQ­ Z¼­ k?sw¯wjmi�l�h�iqpCn|¯�º é´­ S ­ �Bjon�L?ftn|lmº¶\ ­ ZW­ �Bvk¹g¹tftjon�º�pCne¯ l�­ � ­jM p�&?¹ts%i ­ Ø'¡�¢}£�Ù � ¡Rª �wâ ² ¡�Ý3� ò ¢ ¦ ¡ â�PÝ}£ ¦¾Þ?â ¡ ¦ £���ó'Û § Ù%¡oÝ}¤���¥%¥ Ü £��qà ¦ £ § ¤|¢W£E¤R�¼£ á £ ¦ à Ü �e£ á ¤xà Ü  �Ý § ��¡�¢q¢}£E¤ á ­uE �j�s� �Æi�j�l�lmºh�8joµ¸·s%i+L�º �3UI^Ovk­� � ^ � Î p%¯wz?vQk?ve¯kpCn ­ ���ï�o£�¡�¤ ¦ � Þ ¡q�q r£E¤ á §Lõ   § ÜÀò ¤ § â £�à Ü ¢WàC¤xÙ: �Ý §m§�õ ¢!àr¤�Ù ¦EÞ ¡ ç àCÝ�Ùr¤�¡}¢q¢ §�õ ��¥%¥xÝ § �B£ â àCÚ¦ £ § ¤t �Ý §O² Ü ¡ â ¢ ­ �zo�´h�z|jml�ftlmº � nkft¿%joiql�fÀhq&3s �s��pC¹tfK�¾s%i�nkftp½pChHd�joi+L%jm¹gj3&%º G °�h�sB²ejmi �3UIUB·k­�Z ¹tl�sUp %V% j�pCiqlpBl À ¡q� ¦�� Ý�¡�ª § ¦ ¡�¢!£E¤ �§ â ¥ �w¦ ¡�Ý!�~��£�¡o¤x�q¡oº|¿Bs%¹ ­x� O � º�k % i�fgn|®%joi�º �3UIUOv|­� � U � Î p%¯wz?v�k?v|¯kp%n ­ �Pjm°os?¯kfgnk®RsO��Í�jmjm¯��qk?sB¹gsITsBn3°osw¯wjml{²xj0&Bs%n|¯)h�z|j#joi�i�sBi�� °�sBi�i�jm°�h�fts%n½²xs%vkn|¯ ­ ¥ § � Ý}¤xà ܧ�õ)�§ â ¥ Ü ¡��B£ ¦�ò º �m � ��� ë �`^ �x�3UB º �`UOU r ­� �%� � Î p%¯wz?v_k?ve¯kpCn ­ �'j�°�sw¯wftnk®UsO�ÆÍ�joj�¯��¹kws%¹tsORs%n6°�sw¯wj�l'²xj0&Bs%n|¯3h�zkj¼jmi�i�s%i�� °�s%i�i�jm°}h�fgsBn)¯wf>p Rjoh�joi ­  �Ý § Ú�q¡q¡qÙr£E¤ á ¢ §Lõ ¦EÞ ¡{¡� ¦EÞ �P¤e¤ � à Ü � ÜEÜ ¡oÝ ¦ § ¤ �§ ¤ õ ¡�Ý�¡o¤x�q¡ § ¤ �§ âTâ/� ¤e£���à ¦ £ § ¤ è �§ ¤ ¦ Ý § Ü àr¤xÙ �§ â ¥ �w¦ £E¤ á º�`UOU r ­� �%�%� � Î p%¯wz?vekwv|¯kpCn ­ �'sCh�jmlVs%nÈp%nÈj0Y½°ofgjmnIh!l�s%¹tvwh�fts%n�h�s)h�zkjTi�pCh�fts%n|p%¹¬�¾vkne°}h�fts%nÌftnBh�joi % sB¹tpCh�fts%n % i�sB²k¹gj3 ­Z ¿rpCft¹tp%²k¹gjT�¾i�sOpÉ�Ê�ÊXË�Ì�ÍXÍOÊXÉVÐ�øOÖ�ù�Ï�ú�ÑIûbÏãü©Ô�ÊsÏ�ÐOØIÒVÍoýÄü¼þXØOÉ�ÒoÍOÿ�������Í ÓVøOÊ�Ð�ûIÍ ÖhþIÊoÔ øOÓ�þ�ú8Ï�Ëoûwº �`UOUOU|­� �%��· � Î p%¯wz?vRkwv|¯kpCn�º�¤�v|°op M i�jo¿?f>l�p%n�º?pCn|¯�kkpC¹tfg¹¼�p%¯kz|pCn ­ �Æl�jov|¯wsBi�p%n|¯wsI¸®Bjonkjmi�pCh�s%iql¶µ�fgh�zksBvwh�h�zkj ± G ͹tj0�½p ­  �Ý § ��¡q¡qÙr£E¤ á ¢ §�õ ¦EÞ ¡�¡Ißr¢ ¦ �P¤e¤ � à Ü � � Û � òrâ ¥ § ¢q£ �wâ § ¤Â� Þ ¡ § Ý ò §�õ��¶§ â ¥ �w¦ £E¤ á º % p%®%j�l�% r �w��JXv º �3UOUIUk­� �%�m � Z fKRs M ftj�h�p�¿rp%fgnkjmn ­�G n�h�zkjRnks%n|j�êwftl�h�jmn|°�jTs � % jmi��¾j�°}hW°�sw¯wj�lPsr¿Bjoi'±|nkfgh�jT±|jo¹>¯kl ­ ���+�VÛÇ¥ § � Ý}¤xà Ü §�õ��¥%¥ Ü £�¡qÙ4ÛÈà ¦EÞ ¡ â à ¦ £��}¢}º ·�J � ��� ë ^I^���UIv ºX�Bp%nIvepCi+& �3U r Âk­� �%�0J � Î ft°qz|p%jo¹ ZW­¼M lq��pBl�½pCn�º×k?jmi�®Bj�\ ­ �P¹ÄÅpB¯wvwh�ºxp%n|¯ M zksIRpBl��xftn�L ­'Î sw¯wvk¹>pCiP°�vki�¿%j�loº¼k?zkf�¼vkiqp4°�v|i�¿Bjmlmºp%n|¯�°�sw¯wj�l{²ejoh�h�jmi�h�zepCn)h�zkj{�VpCiql�z|pORsr¿I�q\Vft¹g²xjoi�h�²xs%v|n|¯ ­ ÛÈà ¦¾Þ ú ª/à%� Þ Ý}£�� Þ?¦ ¡�¤eº � U ë ·w�#�w·O^ º �`UO^I·w­� �%��� � Í�ðv|¯wft®%joi � i�²|pCnVL%j ­ Û § Ù%¡oÝ}¤ �¶§ Ùr£E¤ á � Þ ¡ § Ý ò�� �e�o¿�¢O¢Oß ­ � � l ¤º��HkV�j�¹¤ M aH�Pº Z ¿rp%fg¹>pC²k¹tj2�¾i�sOÉhÊ�ÊXË�Ì�Í�Í�úOÊXÉ×Ñ�Î�Î�Î�ÏqÐOË���úbÏ�Ñ`ÉVÍ�Ñ øOÓXÊ�ÐOÓXÊ�ÏÄË�ÉXË��OÊoÔ�Ê�úXÐ��VÑOøOØ×Ô`Ó����������Bº Î p�& ���T· O �%­� �%�3v � �Ip%°os%²kvelja ­ ¿rpCnQ¤�ftnBh ­ �8sBnkj�êwf>lLh�jon|°oj8h�zkjosBi�j3Rlj�¾s%i % jmi��¾j�°}h{joi�i�sBi�� °�sBi�i�jm°�h�ftnk®!°�sw¯wjml ­¬E nQ\ ­ d�fti�L?zksO�p%n|¯ ÎQ­ aPpC¹t¹­�%i ­ º?j�¯wfÀh�s%iqloº� �Ý § �q¡q¡�ÙC£E¤ á ¢ §�õ ¦EÞ ¡!� òrâ ¥ § ¢}£ �wâ § ¤ �§ â ¥ �w¦ ¡oÝq¢V£E¤Q� Ü á ¡ ² Ý�à4àr¤�Ù:ª �wâ ² ¡�Ý� Þ ¡ § Ý ò�è ª¼¡0¨�� § Ý�  è ßOë�´`¢Cº % pC®Bjml ^OU��hUB�k­OZ Rjoi�f>°opCn Î prh�z|j0½prh�ft°mpC¹­k?sw°�ftj�hq&%º��i�sr¿?ft¯kjon|°oj%ºBÍ E º �`U r �B­� �%� r � �Ip%°os%²kvel�a ­ ¿rpCnµ¤�ftnBh ­ ��¤ ¦ Ý § Ù � � ¦ £ § ¤ ¦ §µ�¶§ Ùr£E¤ á � Þ ¡ § Ý ò ­ \Viqp%¯wveprh�j M joê?h�l/fgn Î prh�z|j0½prh�ft°mlTí���º� M zkfti�¯ � ¯kfÀh�fgsBn � k % i�fgn|®%joi����¶joi�¹tp%®|º�d�jmi�¹tftn�º �3UIUOUk­� �%�3^ � Z ¹gjoêkpCn|¯wjmi��p%i�¯h& ­tM zkj)fgnIh�iqp%°�h�p%²kfg¹tfghq&èsO�'°�sO % vkh�ftnk®�h�zkj�RftnkfK/v� ¯wf>lLhqpCn|°oj4s �'pè°�sw¯wj ­ ���u�j��kÝ�àC¤k¢oà%� ¦ £ § ¤k¢ § ¤?�}¤ õ�§ Ý â à ¦ £ § ¤�� Þ ¡ § Ý ò º JI ë � r � r ��� r vOv ºI�8sr¿%j3¼²xjoi �3UIU r ­� �%�3U � Í ­ Í ­ �p%i�l�z|p Rsr¿ ­ � l�h�f�½prh�jÈs �#h�zkjÌnIvV¼²xjoiUsO�/l�fg®Bn|pC¹>l4ftn_joi�i�s%iU°os%i�i�j�°}h�ftnk®\°osw¯wjml ­ � §   Ü à%Ù ò�� Bà%ÙBà â £E£Bª/à �  Cº �%� rwë»r ÂOU�� r Je� º �`UB� r ­� ��· � Í8s%²xjoi�h�� ­wé pC¹�L%jmi ­ � Ü á ¡ ² Ý�àC£�� � � Ý}ôr¡}¢ ­ k % i�ftnk®%jmi����¶joi�¹>pC®|º �3U r ^|­� ��·w� � Í ­�é´­ué pCh�l�s%nQpCne¯c� ­ué´­ aPp%l�h�ftnk®Bl ­ k?jo¹K�½�Ç°qz|jm°�L%j�¯»°�sO % vkh�prh�fgsBn�v|l�fgnk®Èi�j�l�f>¯wvkj4p%i�fgh�z�Rjoh�f>° ­?E n {Ý § �q¡q¡qÙr£E¤ á ¢ §�õ ¦EÞ ¡��+�u�u��ºe¿%s%¹tv�Rj JOJ º % pC®Bjml �3UI· ���3UBÂk� ºI�'j�°�j0/²ejmi �3UIvOv|­� ��·%· � ¤�¹gs�&w¯/Í ­ré jm¹t°qz½p%n|¯ � ¹gµ¶&?nRÍ ­ d�joi�¹gj3L�pO % ­ � i�i�sBi�°os%i�i�j�°}h�fts%n/s ��pC¹t®%jo²|i�p%ft°Æ²k¹gsw°�LW°os?¯kjml ­�ô �� �à ¦ ¡o¤ ¦ª �wâ ² ¡oݶÁ è�� ¡I¡ è Á©´`¢rº¬�Pjm°oj0/²ejmi �3UO^Ivk­� ��·C �T� ¯wµ{pCiq¯�� ­~é jo¹>¯wsBn�º©�Bi ­ �%v|l�h�j�l�jmn¬à lV°os%n|l�h�i�v|°�h�fts%n P h�zkjR¹gsrµ��Çiqprh�jT°opBl�j ­ ���u�j�ì�wÝ�àr¤k¢oàB� ¦ £ § ¤|¢ § ¤��¤ õ�§ Ý â à ¦ £ § ¤£� Þ ¡ § Ý ò º �3U ë»r �%�#� r �� º �3U r Âk­� ��·�J � � ­|Î�­wé sO�mjon|°oi�p �Eh ­uM zki�jml�zksB¹t¯)¯wjm°os?¯kfgnk® ­ ��joiql�sBn|pC¹�°�sI�¼vknkf>°opCh�fts%n3fgnc�»r ^ º×k?jm°�h�fts%n ·w­.� � º �3UOvBÂk­� ��·%� � Í8ft°qz|p%i�¯ � ­ �xf %�% jo¹ ­ �i�s%²|p%²kfg¹tf>lLh�ft°�pC¹t®%sBi�fgh�z�½l©�¾s%i¶l % pCiql�j % sB¹K&?nksIRftp%¹tl ­�E n)� ô Ø Ý ���VÛ � ´3ë è¬À ¡q� ¦�� Ý�¡ª § ¦ ¡}¢#£E¤ �¶§ â ¥ �w¦ ¡oÝ!���o£�¡o¤x�q¡�º|¿%s%¹tv�Rj�r · º % pC®Bjml ·w�`v��w·B·%� º �3U r U|­

��� � ���%Â

Page 154: Ï Ð1ÿdÐ1ÿ - People | MIT CSAIL

� ��· v � �Pft°�h�sBiu� ­ �×&Bp%²k¹gsr¿ ­VZ n½jml�h�f�½prh�j�sBnTh�zkj'°osO % ¹tj�êwfghq&Ws ��°�sBn|l�h�i�v|°}h�fgnk®!²kftn|p%i�&/¹gftnkjmp%i°opBl�°mp%¯wj�°�sw¯wj�l ­ {Ý §O² Ü ¡ â ¢ §�õ �}¤ õ�§ Ý â à ¦ £ § ¤£�kÝ�àC¤k¢ â £>¢q¢}£ § ¤eº¼rk� ��� ë Â��x� º �3U r �%­

��� � ��� J