“No one ever went broke overestimating snob appeal. It’s one of the most marketable vicarious pleasures. And it colors writing well beyond Cinderella fiction. Biographers are often drawn to elite subjects. Chick-lit heroines are perennially obsessed with status. The coming-of-age memoir gets more attention if its narrator learned about life at a socially prestigious school. And a diet book has more cachet if it cautions against too many tartes aux pommes rather than too many Twinkies.”