The latest jobs report is good. Does Trump have anything to do with this? Not likely. But even if you assume that the lone-two-three punches of the tax cut, relaxation of environmental and health regulations, and military buildup have given the economy a steroidal stimulus (purely Keynesian, by the way), the steroids are dangerous and short-lived. They come with a growing budget deficit, widening inequality, failure to invest in the nation’s infrastructure and schools, environmental devastation, and pending trade wars with the rest of the world.