Capital is Not Back: On Thomas Piketty’s ‘Capital in the 21st Century’
Yves here. This article pokes at a topic near and dear to my heart, which is the generally reverential treatment of Thomas Piketty’s Capital in the 21st Century. It appears to be a classic example of the cognitive bias called halo effect, in which people have a tendency to see things as all good or all bad. Because there is a lot to recommend Piketty’s work, for instance, the fact that it is exceptionally written, that it has made inequality into one of the hottest topics in economics, and that Piketty has done an admirable and exhaustive job of finding and analyzing the returns on certain types of income producing assets are all highly commendable.
But as readers may know, one of my pet peeves is that Piketty has made a very strong claim, in the form of his formula r>g, or the rate of return on capital (which he also calls “profit”) exceeds the growth rate of the economy, when his data falls short of what would be necessary to prove that assertion.
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