Sex - just what is it all about? Don't other species just get on with it? What are the conflicts and jealousy, pain and disappointments, really all about? The 2010 book SEX AT DAWN tells us that this modern misery is due to our belief in a false evolutionary story about human pair-bonding and nuclear family units. Christopher Ryan and Cacilda Jetha claim that their evidence shows that before 10,000 years ago sexual constraints did not exist, paternity was not an issue, and men and women engaged in fairly free and casual bonobo-like sexual activity. Our ancestors, they argue, not only shared...