The biggest policy mistake of the last decade

In the great economic battle of the past decade, the winner is the tried and true — in a rout. After the 2008 financial crisis, old-fashioned Keynesians offered a simple fix: Stimulate the economy. With idle capacity and unemployed workers, nations could restore economic production at essentially zero real cost. It helped the U.S. in the Great Depression and it could help the U.S. in the Great Recession too. But during and immediately after the crisis, neoliberal and conservative forces...