These are, as it turns out, not easy questions, and Dennett's treatment of them reflects this. He explores various hypotheses for religion's existence and desirability slowly and carefully, but with incredible skill and precision. What religion is at base, and what function it serves, are necessary to determining our attitude towards it, and some of the answers Dennett has come up with are shocking and counterintuitive, but supported by a lot of evidence (some of it admittedly circumstantial). This book was not intended to be the last word on the subject; it was intended to foster inquiry, and I hope it's just the first of its kind. However, while Dennett's tone is mild, and his respect and compassion for religious believers is evident, his logic and methods are in their way more destructive to religion than those fostered by the other "four horsemen". Their work has been more like a broad swipe with a cleaver, while Dennett is much more like a surgeon expertly wielding a scalpel. They've been questioning Oz's orders while Dennett has shown us the first glimpse of the man behind the curtain.
Besides its fantastic and mind-opening exploration of the roots of religious sentiment, and how it affects us today, Dennett's book is a wealth of small details and strangely interconnected accounts of various human and natural phenomena. Music, art, religion, language, history, and yes, evolution, are all mightily entangled and far from removing the wonder of this tapestry, Dennett's exploration has only whetted my thirst for knowledge about it. While the ideas presented are not simple, Dennett has written the book as clearly as possible to make it readable by a large audience. As a result of course, the usual postmodernist and theologician suspects will claim that Dennett doesn't really get the vast complexity of the nonsense they regularly spout; which may be correct since I'm fairly sure they don't get it either. He gives such arguments a fair hearing in the book before disposing handily of them.
Ultimately, you either care what's true, or you don't. This book is for those that do, and are willing to ask some tough questions that may take a while to answer accurately. It's also highly readable and fascinating.
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