The idea of a universal basic income (UBI) is certainly an intriguing one, and has been gaining traction. Swiss voters just turned it down. But it is still alive in Finland, in the Netherlands, in Alaska, in Oakland, CA, and in parts of Canada.

Advocates of a UBI include Charles Murray on the right and Anthony Atkinson on the left. This surprising alliance alone makes it interesting, and it is a reasonable response to a growing pool of Americans made jobless by the march of technology and...