This happened in 50 years. Some days I’m amazed that life doesn’t look more like the Jetsons. At other times I’m blown away by our progress.
Figure 6 (appears on page 72 of the book): “Diffusion of the movable-type printing press over time. From Dittmar. “Information Technology and Economic Change: The Impact of the Printing Press.” The Quarterly Journal of Economics 126, no. 3 (August 1, 2011): 1133-72, by permission of Oxford University Press.