 Among the critics of McCarthy 's approach were his colleagues across the country at MIT . Marvin Minsky , Seymour Papert and Roger Schank were trying to solve problems like " story understanding " and " object recognition " that required a machine to think like a person . In order to use ordinary concepts like " chair " or " restaurant " they had to make all the same illogical assumptions that people normally made . Unfortunately , imprecise concepts like these are hard to represent in logic . Gerald Sussman observed that " using precise language to describe essentially imprecise concepts doesn 't make them any more precise . " Schank described their " anti @-@ logic " approaches as " scruffy " , as opposed to the " neat " paradigms used by McCarthy , Kowalski , Feigenbaum , Newell and Simon . 
 Among the critics of McCarthy <a href='null_genetive' title='1'><mark>'s</mark></a>approach <a href='uninflect' title='2'><mark>were</mark></a> his colleagues across the country at MIT . Marvin Minsky , Seymour Papert and Roger Schank <a href='uninflect' title='3'><mark>were</mark></a> trying to solve problems like " story understanding " and " object recognition " <a href='null_relcl' title='4'><mark>that</mark></a>required a machine to think like a person . In order to use ordinary concepts like " chair " or " restaurant " they had to make all the same illogical assumptions <a href='null_relcl' title='5'><mark>that</mark></a>people normally made . Unfortunately , imprecise concepts like these <a href='drop_aux' title='6'><mark>are</mark></a>hard to represent in logic . Gerald Sussman observed that " using precise language to describe essentially imprecise concepts doesn 't make them any more precise . " Schank described their " anti @-@ logic " approaches as " scruffy " , as opposed to the " neat " paradigms used by McCarthy , Kowalski , Feigenbaum , Newell and Simon . 
Among da critics of McCarthy  approach was his colleagues across the country at MIT . Marvin Minsky , Seymour Papert and Roger Schank was tryna solve problems like " story understanding " and " object recognition " required a machine to think like a person . In order to use ordinary concepts like " chair " or " restaurant " they had to make all the same illogical assumptions people normally made . Unfortunately , imprecise concepts like these hard to represent in logic . Gerald Sussman observed dat " usin precise language to describe essentially imprecise concepts doesn 't make em any more precise . " Schank described their " anti @-@ logic " approaches as " scruffy " , as opposed to the " neat " paradigms used by McCarthy , Kowalski , Feigenbaum , Newell and Simon .