A Pew survey found that 32% of teens say social media is more positive than negative. But when asked the same question about other teenagers, the numbers actually flip. "I don't know exactly what's going on there," says John Sutter.
What does social media do to our self-esteem? How is envy affecting our politics? And should you go to your high school reunion?
Take the Seven Deadly Sins survey: freakonomics.com/nsq-sins/