The younger generations seem increasingly crazed. A worrying proportion of the young sympathises with those who launch terror attacks against Israel, supports the immediate elimination of fossil fuels or demands the wiping out of gender distinctions. All these positions are troubling in themselves, but they also reflect a deeper malady – a mostly apolitical breakdown of social norms, personal interaction, literacy and logical thinking. No single issue has catalysed Gen Z, as the Vietnam War did for the Baby Boomer generation. Boomers were angry but did not generally despair about their futures, which turned out reasonably well, buoyed by the...