One culture, however, is different from the others, and that’s modern WEIRD (“Western, educated, industrialized, rich, democratic”) culture. Dealing in the sweeping statistical generalizations that are the stock-in-trade of cultural evolutionary theorists—these are folks who say “people” but mean “populations”—Henrich draws the contrasts this way: Westerners are hyper-individualistic and hyper-mobile, whereas just about everyone else in the world was and still is enmeshed in family and more likely to stay put. Westerners obsess more about personal accomplishments and success than about meeting family obligations (which is not to say that other cultures don’t prize accomplishment, just that it comes with the package of family obligations). Westerners identify more as members of voluntary social groups—dentists, artists, Republicans, Democrats, supporters of a Green Party—than of extended clans.