ideas have been attacked by evolutionary psychologists blinded by Bateman and even the Vatican, which once sent a ‘hostile’ envoy to a conference she gave on the meaning of sexual intercourse. Others chose to simply belittle the Harvard scientist and her work. Hrdy recalls one male colleague’s ‘mortifying’ response to her theory: ‘So, Sarah, put it another way – you’re horny, right?’ A wave of supporting evidence has now seen Hrdy’s theory of paternity confusion incorporated into mainstream academic thinking.