Paul Krugman: Easy Useless Economics

A few days ago, I read an authoritative-sounding paper in The American Economic Review, one of the leading journals in the field, arguing at length that the nation’s high unemployment rate had deep structural roots and wasn’t amenable to any quick solution. The author’s diagnosis was that the U.S. economy just wasn’t flexible enough to cope with rapid technological change. The paper was especially critical of programs like unemployment insurance, which it argued actually hurt workers because they reduced the incentive to adjust.

O.K., there’s something I didn’t tell you: The paper in question was published in June 1939. Just a few months later, World War II broke out, and the United States — though not yet at war itself — began a large military buildup, finally providing fiscal stimulus on a scale commensurate with the depth of the slump. And, in the two years after that article about the impossibility of rapid job creation was published, U.S. nonfarm employment rose 20 percent — the equivalent of creating 26 million jobs today.