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" "So why did spatial issues remain a blind spot for the economic profession? It was not a historical accident: there was something about spatial economics that made it inherently unfriendly terrain for the kind of modeling mainstream economists know how to do. That something was, as you might well guess, the problem of in the face of increasing returns, a problem that is even more acute in than in . In development the crucial role that high assigned to increasing returns was a hypothesis crucial to that doctrine, but not necessarily crucial to understanding development in general. One could do meaningful theorizing about developing countries, albeit not in the grand tradition, without sacrificing the convenient assumptions of constant returns and perfect competition. In spatial economics, however, you really cannot get started at all without finding a way to deal with scale economies and oligopolistic firms.
Paul Robin Krugman (born February 28, 1953) is an American New Keynesian economist, Professor of Economics and International Affairs at the Woodrow Wilson School of Public and International Affairs at Princeton University, Centenary Professor at the London School of Economics, and a former op-ed columnist for The New York Times.
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As is often the case with major disputes in economics, the argument over fiscal policy went on for years, with some critics of fiscal policy still defending their position when this book went to press. It seems fair, however, to say that among economists a more or less Keynesian view of the effects of fiscal policy came to prevail. Careful statistical studies at the International Monetary Fund and else where showed that austerity policies have historically been followed by contraction, not expansion. Recent experience, in which countries like Spain and Greece that were forced into severe austerity also experienced severe slumps, seemed to confirm that observation. Furthermore, it was clear that those who had predicted a sharp rise in U.S. interest rates due to budget deficits, leading to conventional crowding out, had been wrong: U.S. long-term interest rates remained near record lows even during the years from 2009 to 2012, when the government ran very large deficits.
In a way, the worst sin of the conservatives was that of hypocrisy. They proclaimed growth as their objective, offered it as the answer to all problems, all while following policies that actually inhibited that growth at least a bit. At the end of the day, however, the most striking fact is how little happened to U.S. long-term growth, good or bad, on their watch.
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The legend of King Midas has been generally misunderstood. Most people think the curse that turned everything the old miser touched into gold, leaving him unable to eat or drink, was a lesson in the perils of avarice. But Midas’s true sin was his failure to understand monetary economics. What the gods were really telling him is that gold is just a metal. If it sometimes seems to be more, that is only because society has found it convenient to use gold as a medium of exchange—a bridge between other, truly desirable, objects. There are other possible mediums of exchange, and it is silly to imagine that this pretty, but only moderately useful, substance has some irreplaceable significance.