If kids can’t socialize, who should parents blame? Simple: They should blame themselves. This is the argument advanced in It’s Complicated: The Social Lives of Networked Teens, by Microsoft researcher Danah Boyd. Boyd ... has spent a decade interviewing hundreds of teens about their online lives. What she has found, over and over, is that teenagers would love to socialize face-to-face with their friends. But adult society won’t let them. “Teens aren’t addicted to social media. They’re addicted to each other,” Boyd says. “They’re not allowed to hang out the way you and I did, so they’ve moved it online.

It’s true. As a teenager in the early ’80s I could roam pretty widely with my friends, as long as we were back by dark. Over the next three decades, the media began delivering a metronomic diet of horrifying but rare child-abduction stories, and parents shortened the leash on their kids. Politicians warned of incipient waves of youth wilding and superpredators (neither of which emerged). Municipalities crafted anti-loitering laws and curfews to keep young people from congregating alone. New neighborhoods had fewer public spaces. Crime rates plummeted, but moral panic soared. Meanwhile, increased competition to get into college meant well-off parents began heavily scheduling their kids’ after-school lives.