“It's difficult to be rigorous about whether a machine really 'knows', 'thinks', etc., because we're hard put to define these things. We understand human mental processes only slightly better than a fish understands swimming.”

—  John McCarthy

" The Little Thoughts of Thinking Machines http://www-formal.stanford.edu/jmc/little.html", Psychology Today, December 1983, pp. 46–49. Reprinted in Formalizing Common Sense: Papers By John McCarthy, 1990, ISBN 0893915351
1980s

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John McCarthy 12
American computer scientist and cognitive scientist 1927–2011

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