That candidate is Andrew Yang, a well-connected New York businessman who is mounting a longer-than-long-shot bid for the White House. Mr. Yang, a former tech executive who started the nonprofit organization Venture for America, believes that automation and advanced artificial intelligence will soon make millions of jobs obsolete — yours, mine, those of our accountants and radiologists and grocery store cashiers.

He says America needs to take radical steps to prevent Great Depression-level unemployment and a total societal meltdown, including handing out trillions of dollars in cash.

Andrew Yang, a former tech executive, is mounting a longer-than-long-shot bid for the White House by warning of economic calamity ahead.