But, as I said, we live in a golden age of economic debunkery. The doctrine of expansionary austerity collapsed as evidence on the actual effects of austerity came in, with officials at the International Monetary Fund even admitting that they had severely underestimated the harm austerity does. The debt-scare doctrine collapsed once independent economists reviewed the data. And now the policy-uncertainty claim has gone the same way.

Actually, this happened in two stages. Soon after it became famous, the proposed measure of uncertainty was shown to be almost comically flawed; for example, it relied in part on press mentions of “economic policy uncertainty,” which meant that the index automatically surged once that phrase became a Republican talking point. Then the index itself plunged, back to levels not seen since 2008, but the economy didn’t take off. It turns out that uncertainty wasn’t the problem.

The truth is that we understand perfectly well why recovery has been slow, and confidence has nothing to do with it. What we’re looking at, instead, is the normal aftermath of a debt-fueled asset bubble; the sluggish U.S. recovery since 2009 is more or less in line with many historical examples, running all the way back to the Panic of 1893. Furthermore, the recovery has been hobbled by spending cuts — cuts that were motivated by what we now know was completely wrongheaded deficit panic.

And the policy moral is clear: We need to stop talking about spending cuts and start talking about job-creating spending increases instead. Yes, I know that the politics of doing the right thing will be very hard. But, as far as the economics goes, the only thing we have to fear is fear-mongering itself.

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Correction: In my column on Monday, I somehow misstated the Republican plan on food stamps, which was for a doubling of planned cuts — a significant cut but not, as I said, a halving of benefits.