... but eventually the evidence that our brains are simply more complex versions of the brains of our animal cousins will be overwhelming. At that point, denials that EP can explain 'why we are the way we are' will sound just like denials that evolution exists at all. Many people have a good reason to reject the ideas that Wright presents so clearly. First, it renders much of sociology and traditional psychology obsolete. Ouch. Second, it posits that humans have inherent behavioral tendencies, which can differ (often substantially) between men and women. Ouch again. A scientist should always be asking 'why'. Wright's book summarizes the answers that a new science is offering.