How Did Economists Get It So Wrong?
Escrito por Imprensa, postado em 30 dEurope/London setembro dEurope/London 2009 
By PAUL KRUGMAN
I. MISTAKING BEAUTY FOR TRUTH
It’s hard to believe now, but not long ago economists were congratulating themselves over the success of their field. Those successes – or so they believed – were both theoretical and practical, leading to a golden era for the profession. On the theoretical side, they thought that they had resolved their internal disputes. Thus, in a 2008 paper titled “The State of Macro” (that is, macroeconomics, the study of big-picture issues like recessions), Olivier Blanchard of M.I.T., now the chief economist at the International Monetary Fund, declared that “the state of macro is good.” The battles of yesteryear, he said, were over, and there had been a “broad convergence of vision.” And in the real world, economists believed they had things under control: the “central problem of depression-prevention has been solved,” declared Robert Lucas of the University of Chicago in his 2003 presidential address to the American Economic Association. Read more…
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