I can totally see why Robert Sapolsky gave this his mark of approval. It's irreverent, funny as hell and stinking brilliant! Sure, the blunt, streetwise, Brooklyn guy narrative voice boarders on shtick at times. That being said, it has a important function, to playfully broach the "offensive" (to some) subject matter that is the hallmark of evolutionary psychology (e.g. sex -including homosex- and aggression). Of course the material covered in this book (which I will not summarize), goes far beyond sex and aggression. It always remains grounded in the fundamental evolutionary principles of survival and reproduction. Darwin's dangerous idea clarifies and unifies every domain of science to which it is legitimately applied, with the side benefit that it threatens and offends those among us (conservative and liberal alike) that still cling too tired, romantic notions that human beings are somehow above or outside of the laws that govern the behavior of every other living thing. Maybe there's something wrong with me but I just can't get enough of this stuff. I love this book!