United States, and may sink below 0.5 percent per year between 2050 and 2100.22 Gordon’s analysis is based on a comparison of the various waves of innovation that have succeeded one another since the invention of the steam engine and introduction of electricity, and on the finding that the most recent waves—including the revolution in information technology—have a much lower growth potential than earlier waves, because they are less disruptive to modes of production and do less to improve productivity across the economy.
