Consider, for a moment, a tale of two countries. Both have suffered a severe recession and lost jobs as a result — but not on the same scale. In Country A, employment has fallen more than 5 percent, and the unemployment rate has more than doubled. In Country B, employment has fallen only half a percent, and unemployment is only slightly higher than it was before the crisis.

Paul Krugman

Don’t you think Country A might have something to learn from Country B?

This story isn’t hypothetical. Country A is the United States, where stocks are up, G.D.P. is rising, but the terrible employment situation just keeps getting worse. Country B is Germany, which took a hit to its G.D.P. when world trade collapsed, but has been remarkably...