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Why Are Economists So Bad at Forecasting? – TIME

Posted by Matt in July 17th, 2009

The problem is twofold. First, it’s hard to predict the future. Second, it’s really hard to predict the future when so many parts of the economy are in flux. “This has been an extraordinarily difficult period for forecasters,” says Harvard economist James Stock. “Our models aren’t really designed for predicting massive changes.” Philip Joyce, a professor of public policy and administration at George Washington University, figures that in normal times, budget projections a couple of years out tend to be pretty reliable, at five years less so and at 10 years not much at all. “But these aren’t normal times,” he says. “In recessions, even the short-term numbers aren’t very good, because a lot of the factors that go into them are based on assumptions that the economy will behave within some narrow band of reality, and the way it behaves is outside of that band.”

Why Are Economists So Bad at Forecasting? – TIME

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