Some good points "We have but one sample of history." And it's just not a very big sample. ... But this is macroeconomics. It's hard to muster conclusive eviden

Some good points "We have but one sample of history." And it's just not a very big sample. ... But this is macroeconomics. It's hard to muster conclusive evidence, and almost impossible to generate much in the way of useful predictive ability. Main problem with the Reinhardt-Rogoff paper was it was packaged and sold as an influential talking point - over 90% debt/GDP leads to disaster - which was not at all supported by evidence.