Having re-read Heller's article of 1975 (AER 65(1): 1-26), I noticed a strong similarity between the present reflections after the Lehman crash and the long repeated debate during the decade from 1965 to 1975. The latter ended with no serious accepted lessons and this fact may be one of the causes which lead economics to the path that Paul Krugman judged "most work in macroeconomics in the past 30 years has been useless at best and harmful at worst.”(Cited in Economist June 11th 2009. The original statement was expressed a bit differently. See the video, LSE, 2009, around the 14th minute). It may be a good time to re-consider what was wrong and right with economics of that time and what kind of lessons we can draw from the discussion. Without this kind of deep reflections on economics, we risk repeating another 30 years which is useless at best and harmful at worst. What is your opinion on the present state of economics?

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