This is an excellent book to describe all thinkable crosssections of Silicon Valley through interviews in the social science methods and through writing by prominent figures in Silicon Valley. The only drawback I found is that the book has too rich contents for a reader to read through casually. I strongly recommend this book to those serious readers who are engaged in Silicon Valley, associated with venture businesses, interested in mechanisms and histories of Silicon Valley, or interested in business models.
The book has a big reference table to illustrate how different Silicon Valley entrepreneurs are from small business owners and traditional entrepreneurs, and describes four distinct types of entrepreneurs in Silicon Valley. The book also enumerates ten reasons why Silicon Valley has been prosperous.
This is really a good book for a reader to learn what Silicon Valley is like.

Practically useful for entrepreneurs, venture capitalists and professionals.