How to Tell If Someone Is Hitting You

A dominance hierarchy is a social structure where some people are allowed to hit you, and you're not allowed to hit back. It is defined by a sustained, institutionalized asymmetry of aggressive-submissive interactions. This skewed distribution of aggression enables a skewed distribution of resources and opportunities. Modern history has ostensibly been an epic conflict between different political ideas, but from this biological perspective, it has been awfully monolithic: mostly a conflict be...