His basic argument in this book is that the computer industry has matured to the point where it can no longer just cater to the early-adopter technologists and must appeal to the masses to continue growth. Unfortunately, the industry doesn't know how to do this and continues to deliver technology for technology's sake, leading to fat computers and technology that aren't that useful or appealing to most people, and are beginning to exhaust the technologists too. He introduces some recent, but standard models of technology adoption for discussing the problems, customer-centered design in cross-disciplinary teams (marketing, engineering, and user experience) for designing products that transcend the problems (explicitly discussing Contextual Design a few times), and "information appliances," multitudes of small, task-focused technology products that will replace our big, cumbersome, general-purpose (but not great at any) PCs.
Norman's forte is definitely cognitive and experimental psychology in product design, and not being a technological or product development process visionary. I found very little new or interesting content in the book, and I don't think he articulated even some of the derived ideas very well. The whole book could have been condensed into a long magazine article. His prose is wordy and redundant, and the book is regrettfully lacking in many of the detailed case studies and examples he's used in previous books to elucidate his ideas. I want the idiosyncratic and outspoken psychologist professor back, such as he was in The Design of Everyday Things, or the powerful academic argument of Things That Make Us Smart. His short stint as a VP of HPs "Information Appliances" division, and his earlier work at Apple, was not enough to give him a deep understanding or insight into the problems of the current technology-product market.
He does make some good book recommendations, however, and I'll add my favorite articulation of the problem, that I think articulate the problem and potential solutions much better:
C. M. Christensen, _The Innovator's Dilemma: When New Technologies Cause Great Firms to Fail_, 1997. G. A. Moore, _Crossing The Chasm: Marketingand Selling High-Tech Goods to Mainstream Customers_, 1991. T. K. Landauer, _The Trouble With Computers: Usefulness, Usability, and Productivity_, 1995.