Neither kin selection nor reciprocal altruism can explain large-scale human cooperation.

Evidence

The rise of large cooperative groups is, therefore, a double conundrum. With ever-greater chances of encountering strangers, genetic relatedness subsides geometrically, and without extra safeguards, reciprocal altruism also rapidly reverts to selfishness. Neither kin selection nor reciprocal altruism can explain the rise of large cooperative societies. — Norenzayan, Ara, Big gods - how religion transformed…, 37

Categorization

• XREF: Directly feeds the analytical bridge to Baumard’s partner-choice model of religion, which the reader aims to test against Silence.