The main theme of this book is that the phenomena of human beauty have their roots in evolutionary adaptations. It's a good idea, but a very weak book. I am a scientist, and my working assumption is that every feature of human behavior has its roots -- on some level -- in evolutionary adaptations. But to locate the specific adaptations that underlie a given feature is extremely difficult, and it is very easy to lapse into "just-so" stories which sound plausible but could be hogwash. Dr. Etcoff seems unaware of this pitfall. Whenever she comes across a piece of beauty trivia that can be plausibly linked to some evolutionary adaptation, she mentions it, and the book often reads like a first-year doctoral student's lit survey. But almost nowhere in the book does she consider competing explanations or counterexamples. Dr. Etcoff also has a political agenda, which is to "debunk" feminist concerns about the effect of cultural pressures on girls' and womens' self-image. She seems to think that, since our beauty impulse is wired into us by evolution, there is no room left for a critique of the way our culture instantiates those impulses. One thing that particularly offended me was her smug dismissal of the role of media images in the rise of eating disorders. Her main point is that media images can't be the sole "cause" of eating disorders, since a majority of women (who are exposed to the same images) don't develop full-blown bulimia or anorexia. Technically, she is correct, but she has missed the forest for the trees.