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Robots and Inequality: A Skeptic’s Take

Monday, March 20, 2017 23:27
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Douglas Campbell:

Robots and Inequality: A Skeptic’s Take: Paul Krugman presents “Robot Geometry” based on Ryan Avent‘s “Productivity Paradox”. It’s more-or-less the skill-biased technological change hypothesis, repackaged. Technology makes workers more productive, which reduces demand for workers, as their effective supply increases. Workers still need to work, with a bad safety net, so they end up moving to low-productivity sectors with lower wages. Meanwhile, the low wages in these sectors makes it inefficient to invest in new technology.

My question: Are Reagan-Thatcher countries the only ones with robots? My image, perhaps it is wrong, is that plenty of robots operate in Japan and Germany too, and both countries are roughly just as technologically advanced as the US. But Japan and Germany haven’t seen the same increase in inequality as the US and other Anglo countries after 1980 (graphs below). What can explain the dramatic differences in inequality across countries? Fairly blunt changes in labor market institutions, that’s what. This goes back to Peter Temin’s “Treaty of Detroit” paper and the oddly ignored series of papers by Piketty, Saez and coauthors which argues that changes in top marginal tax rates can largely explain the evolution of the Top 1% share of income across countries. (Actually, it goes back further — people who work in Public Economics had “always” known that pre-tax income is sensitive to tax rates…) They also show that the story of inequality is really a story of incomes at the very top — changes in other parts of the income distribution are far less dramatic. This evidence also is not suggestive of a story in which inequality is about the returns to skills, or computer usage, or the rise of trade with China. …



Source: http://economistsview.typepad.com/economistsview/2017/03/robots-and-inequality-a-skeptics-take.html

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