I must say I'm very disappointed with this book. I bought what I thought was going to be a serious, researched account of the evolution of religion, the reasons why societies believe in deities etc.
I was disappointed in two ways:
1. DUMBING DOWN: OR HOW WRITERS SHOULD STOP STOOPING TO PEOPLE WHO DON'T EXIST ANYWAY
What I got is a lot of unsourced material (ie: "as a famous experiment showed..." - wait what? What experiment? By whom? What year?), a lot of verbiage (every step of a train of thought is posed to allow for five different ways of saying it, each more dumbed down than the last) - which instead of making reading easier actually hinders the process. Wright apologizes for using scientific words ("is an adaptation. But enough with this scientific jargon..." - WHAT? Since when "adaptation" is scientific jargon? So instead Wright, no doubt to spare his slow readers from actually trying to think, resorts to say "we were designed to", the least rigorous and most error-inducing way to speak about evolution).
The book really lacks scientific rigor, and yet is still way too complicated for most people. So what is the point? I don't understand how you might think that anyone who doesn't understand the word "adaptation" would pick up a 500 pages long volume about evolution and religion. In the end, these kinds of book please no one: nor the sub-average reader in for a cheap and quick sensationalistic thrill nor the serious readers who wanted a book that actually brought something to the table. (This is actually a problem not just for Wright but for the great Dawkins as well - compare The Selfish Gene to his recent books and you'll see what I mean).
2. CONCENTRATION ON ABRAHAMIC GODS AND LIP SERVICE TO RELIGIOUS PEOPLE
The author lost me as soon as in the introduction he explained that he actually believed in some sort of deity. From that moment on I knew it would be impossible for him to be objective and scientific. I was proved right again and again, as he described with almost-mockery every belief outside of Abrahamic religion and then proceeded to basically explain how the world as a whole was progressing toward enlightement through the advance of Abrahamic religions, which surely shows that somehow God exists. WHAT? How do you get from there to there, I have no idea.
What Wright means by "evolution of God" is more "Oh look how our idea of God which was so primitive back then has become so refined and evolved and is going toward the greater good". This is so ethnocentric and religious that it makes me think of 19th century explorers writing about "savages". To be sure, when Wright quotes some of them, you wouldn't notice the difference between them and him, if not for the quotation marks.
Anyway, save your money, don't buy this book.