In partible paternity societies, child-rearing, unsurprisingly, often becomes a collaborative endeavor, with many adults looking out for a child’s well-being. Anthropologists call this collective raising of kids “cooperative breeding,” and many believe it is both the “how” and “why” not only of female multiple mating but also of the survival and success of Homo sapiens, when other hominins bit the dust. It was not the monogamous heterosexual pair bond that made us who we are today and ensured that we would endure, they argue, but the shared raising of offspring by multi-member groups and
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