ROBERT WRIGHT is accustomed to thinking of the human mind as an intricate machine. He has long been fascinated with evolutionary psychology--a field that views the brain as a mechanism built by the genes and shaped by natural selection--and has written extensively about it, both in his 1994 book, The Moral Animal, and in a TIME cover story last August, "Twentieth Century Blues." In this week's cover story, contributor Wright examines the philosophical questions raised by "artificial intelligences" such as Deep Blue, the chess-playing computer that nearly defeated the human world champion, Garry Kasparov. In addition, Kasparov writes about the moment...
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