"The only function of economic forecasting is to make astrology look respectable," John Kenneth Galbraith, an irreverent economist, once said. ... Over the period [1999-2014] there were 220 instances in which an economy grew in one year before shrinking in the next. In its April forecasts the IMF never once foresaw the contraction looming in the next year. Even in October of the year in question, the IMF predicted that a recession had begun only half the time. To be fair, an average-growth prediction also misses 100% of recessions. One model does better, though. Our random-number generator correctly forecast the start of a recession 18% of the time."
"The only function of economic forecasting is to make astrology look respectable," John Kenneth Galbraith, an irreverent economist, once said. ... Over the period [1999-2014] there were 220 instances in which an economy grew in one year before shrinking in the next. In its April forecasts the IMF never once foresaw the contraction looming in the next year. Even in October of the year in question, the IMF predicted that a recession had begun only half the time. To be fair, an average-growth prediction also misses 100% of recessions. One model does better, though. Our random-number generator correctly forecast the start of a recession 18% of the time."