The book is more of a guide of "how to live with men" than highlight differences between the genders in a useful manner. In an attempt to be funny, the authors repeat ad infinitum some stereotypical anecdotes about how the genders are different. Unfortunately, it's rather irritating than funny. I did not finish the book (got to right past 1/3rd) as I did not really find the first chapters of it useful. No footnotes at all did not make the science referred in the book seem less dubious.