The term 'fifth generation' refers to the computers now being designed as part of an ambitious national project [1] at the Institute of New Generation Computer Technology (ICOT) in Tokyo. According to Kazuhiro Fuchi, direc- tor of ICOT, the project is intended to create machines and programs that can eMciently process symbolic information for artificial intelligence applications. He calls them KIPS for 'knowledge information processing systems'. The boldness of the Japanese plan and the level of public and industrial support for it ($855 million over 10 years) have attracted considerable international atten- tion, debate, and controversy. Feigenbaum and McCorduck's book will be read by almost everyone inter- ested in the Japanese 5th generation computer project. It is about what the Japanese are doing, what their plans are, and what they might realistically accomplish. It is also about the state of the art in knowledge engineering, the importance to the military of a technological edge, the alternatives for an American response, and advice about placing one's bets in research. "What are the objectives of the fifth generation project? .... Will the Japanese succeed? .... What should the American role be? " Questions like these, which surround the fifth generation project, do not yield to one-dimensional answers. Here the authors show breadth and skill at finding and weighing relevant factors. For example, they examine the Japanese strengths and weaknesses, and the technological costs and risks in three short chapters: "What's Wrong", "What's Right", and "What's Real". So what's wrong? "The science upon which these plans are laid lies at the outermost edge (and in some cases, well beyond) what computer science knows at present. The plan is risky; it contains several 'scheduled breakthroughs'". The project needs early successes to maintain momentum. Computer science education is mediocre in Japan, and there are few computer scientists to make Artificial Intelligence 22 (1984) 219-226 0004-3702/84/$3. 00© 1984,ElsevierSciencePublishersB. V. (North-Holland