One colleague writing in the Quarterly Review of Biology equated her hypothesis that female primates benefited from mating with multiple males with “parapsychology.” Others made it more personal, accusing her of projecting. “So, Sarah, put another way, you’re saying you’re horny, right?” one colleague inquired. (Hrdy called this “one of the more mortifying moments of my life.”) But her work also opened the floodgates for more research that challenged the status quo.