"And the biggest question mark of all is whether, at long last, robots and artificial intelligence really will make large numbers of people completely unemployable. If human labor is less needed in the future, that in principle is excellent news: a paradise of robotic servants awaits us. But our economies have always relied on the idea that people provide for themselves by selling their labor. If the robots make that impossible, then societies will simply come apart unless we reinvent the welfare state. Not all economists think that’s worth worrying about just yet. But those who do are reviving an idea that dates back to Thomas More’s 1516 book Utopia: a universal basic income. The idea still seems utopian, in the sense of fantastically unrealistic. Could we really imagine a world in which everyone gets a regular cash handout, enough to meet their basic needs, no questions asked? Some evidence suggests it’s worth considering. From 1974 to 1979, the idea was tried in a small Canadian town, Dauphin, in Manitoba. For five years, thousands of Dauphin’s poorest residents got monthly checks funded jointly by the provincial and federal governments. And it turns out that guaranteeing people an income had interesting effects. Fewer teenagers dropped out of school. Fewer people were hospitalized with mental health problems. And hardly anyone gave up work. New trials are under way to see if the same thing happens elsewhere. It would, of course, be enormously expensive. Suppose you gave every American adult $12,000 a year. That would cost 70 percent of the entire federal budget. It seems impossibly radical. But then, impossibly radical things do sometimes happen, and quickly. In the 1920s, not a single U.S. state offered old-age pensions; by 1935, Frances Perkins had rolled out Social Security across the nation."