How Harmful Is Social Media?There’s a general sense that it’s bad for society—which may be right. But studies offer surprisingly few easy answers. In April, the social psychologist Jonathan Haidt published an essay in The Atlantic in which he sought to explain, as the piece’s title had it, “Why the Past 10 Years of American Life Have Been Uniquely Stupid.” Anyone familiar with Haidt’s work in the past half decade could have
