 Pinning the anxieties of 18- to 25-year-olds on social media and smartphones may be a stretch, but Jonathan Haidt was not alone. He was riding a wave in the spirit of our age. Remember, every generation of parents is horrified by the new technologies of kids. Plato was horrified by a newfangled thing called writing. The town fathers of London were horrified by Shakespeare, and archbishops in America were horrified by the birth of swing music.