“As Erik Brynjolfsson and Andrew McAfee point out in their book, the four key measures of an economy’s health (per capita GDP, labor productivity, the number of jobs, and median household income) all rose together for most of the Cold War years. “For more than three decades after World War II, all four went up steadily and in almost perfect lockstep,” Brynjolfsson noted in a June 2015 interview with the Harvard Business Review. “Job growth and wage growth, in other words, kept pace with gains in output and productivity. American workers not only created more wealth but also captured a proportional share of the gains.” In”