It's a new warning about the impact of artificial intelligence on jobs with a blunt opening: "Most people I know in the A.I. industry think the median person is screwed, and they have no idea what to do about it," writes Jasmine Sun in a New York Times essay. Sun, who lives in San Francisco and writes about Silicon Valley, notes that the term "underclass" gained traction in the 1960s to describe workers displaced by automation. Today, she writes, a new fear is emerging that a "permanent underclass" is in the offing. Sun makes clear that most economists and experts in artificial intelligence don't expect this worst-case scenario to unfold, but the "persistence" of the idea raises red flags for her: