Meet the 28-year-old Student Who Exposed Two Harvard Professors Whose Shoddy Research Drove Global Austerity
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When you fix R&R's problematic methodology and coding errors, you get a very different result that – guess what? – does not support austerity and shows that countries can most certainly cross the phony debt-to-GDP “threshold” and grow.
In their newly released paper, " Does High Public Debt Consistently Stifle Economic Growth? A Critique of Reinhart and Rogoff” Herndon, Ash and Pollin show that "when properly calculated, the average real GDP growth rate for countries carrying a public-debt-to-GDP ratio of over 90 percent is actually 2.2 percent, not -0:1 percent as published in Reinhart and Rogoff. That is, contrary to RR, average GDP growth at public debt/GDP ratios over 90 percent is not dramatically different than when debt/GDP ratios are lower."
Herndon, Ash, and Pollin have set off a firestorm, with those who long suspected that R&R's work was crap shouting hallelujah and defenders scrambling to figure out a way to support deficit hysteria despite the body blow to their theory.
Bottom line: The foundation of the entire global push for austerity and debt reduction in the last several years has been based on a screwup in an Excel spreadsheet and poorly constructed data.
Reinhart and Rogoff are on the defensive. As Mathew O'Brien at The Atlantic put it, "this is the academic's version of the dream where you're naked in public." They have screwed up royally. They have also done a great deal of damage to the world. As Paul Krugman has observed, their replies to their critics have thus far only compounded the confusion. They need to come clean, stop talking like their mistakes are minor, and own up to the enormity of their errors. And a big round of applause goes to the folks at U Mass Amherst for getting to the bottom of this insanity.