Robert J. Gordon, an economist at Northwestern University, has recently published an important new book, The Rise and Fall of American Growth, which argues that the U.S. has entered a new age of stagnation in which our hopes for an ever more prosperous future will largely evaporate. While Gordon’s argument is often characterized as being the opposite of the one I have made in my two books about the impact of advancing automation technology on the job market (most recently, Rise of the Robots), there are many areas in which I think we would agree.