Dissolving mysteries using logic instead of dogma.
So the book is a partially recycled "The God Delusion" but focuses completely on how we tell reality from fantasy. This book should have been part of The God Delusion. I'd say it's worth the money, especially if you are arguing with someone who tries to drop the "reality is subjective" bomb.
I've got this book on reserve at the library and just waiting for it to be available. Can't wait to read it!