Review of the first edition only: This book may be useful as a parading of the cast of artificial intelligence (AI) characters in 1980, when it was first written but it does not do much for me today. Exuberant, hopeful, bright--sure, but so what? The material seems insensitive to the deep philosophical stakes of its surface skim of Turing's hardy question: machines be considered intelligent, and how and why? Maybe that's the later engineers' fault, not McCorduck's. (This edition can't tell us the difference.) Still there's some useful material gathered here--names, chronologies, testimonies, interviews, etc., and the fact that so many of the themes are right on--information and entropy; Turing and binary difference; Simon and processing; von Neumann, IBM, and games, etc., etc.--suggests that this volume, however breezy, registers the currents of thought in the 1980s that continue to trickle down into the popular understanding of AI. Again, the revised version might redeem its barely bearable lightness, but this edition seems like it should only interest the relatively few historians who want to document the popular imagination of AI in the 1980s.