We used to believe that intelligence, like speech, culture, and self-awareness, made us unique. However, diluting intelligence across a variety of faculties contributes to blurring the boundary that separates man and machine. Man is better at speaking Japanese, but machines are better than man at playing chess. Perhaps one day machines will also be better at speaking Japanese. The difference between man and machine seems to be more a matter of degree than of nature, a distinction that enabled us to conceive of the idea of augmented man.