This is a terrific book that gives you a general overview of how integral theories can be applied to various aspects of life like politics and business. Since the integral field is only in it's infancy, the book contains only overviews. So I have no clue why the ignorant idiot in the other review called the book "blah blah blah". The book is superb as are all Ken Wilber books.
If you want a good background to his works, read "Brief History of Everything", if you want to know about practicing it in your personal life, read "One Taste", if you want to know how to approach problems in relation to science and religion, read "Marriage of Sense and Soul". TOE gives you a good idea, a vision of what Integral business, integral politics etc. will look like, so it's a very visionary book. If you are seriously interested in applying integral theory, checkout the Integral Institute, (http://www.integralinstitute.org)
In short, I believe, Ken Wilber is a genius and like Deepak Chopra says, we must read all his books, because he is a tremendous gift to the world. Most critics of his work seem to be ignorant, so they post reviews like one of them in this list. I believe we all need a heavy dose of Ken Wilber, and only people passionately committed to the Path of Ignorance will ignore his work!
History will no doubt record Ken Wilber as one of the greatest philosphers of all time. In this and over a dozen other books, he brings together philosophy, psychology, theology, the hard sciences (physics, biology, etc) and the broad sciences (sociology, political theory, linguistics, etc) into a single coherent vision that enables the contemplative thinker to make sense of what is going on in the world today. This book in particular offers a clear framework that enables meaning to be found both in your own cultural context as well as the domain of international politics where multiple cultures of different degrees of complexity are forced to interact on the emerging stage of global techno-commerce. He also offers a clear vision of the perils facing humanity unless we can quickly evolve a more inclusive and compassionate stance to other humans and all life of earth. A "must read" if you are interested in lending a hand to help humanity evolve into a new age of global consciusness. Also required reading if you wish to evolve personal practices that lead to authentic trnasformation into higher and deeper realms of personal peace and empowerment.