- Humans are a cultural species. Our brains and psychology are specialized for acquiring, storing, and organizing information gleaned from the minds and behaviors of others. Our cultural learning abilities directly reprogram our minds, recalibrate our preferences, and adapt our perceptions. As we’ll see, culture has devised many tricks for burrowing into our biology to alter our brains, hormones, and behavior.
- Social norms are assembled into institutions by cultural evolution. As powerful norm-learners, we can acquire a wide range of arbitrary social norms; however, the easiest norms to acquire and internalize tap deeply into aspects of our evolved psychology. I’ve highlighted a few aspects of our evolved psychology, including those related to kin-based altruism, incest aversion, pair-bonding, interdependence, and tribal affiliation.
- Institutions usually remain inscrutable to those operating within them—like water to fish. Because cultural evolution generally operates slowly, subtly, and outside conscious awareness, people rarely understand how or why their institutions work or even that they “do” anything. People’s explicit theories about their own institutions are generally post hoc and often wrong.
Joseph Patrick Henrich, The WEIRDest people in the world: How the west became psychologically peculiar and particularly prosperous, New York, 2020, p. 93