In December 1965 a paper by Hubert Dreyfus revived the old game of generating curious arguments for and against Artificial Intelligence. Dreyfus hit top form in September 1967 with an explanation in the Review of Metaphysics of the philosophically interesting difficulties encountered in constructing robots. The best of these is that a mechanical arm controlled by a digital computer could not reasonably be expected to move fast enough to play ping-pong.