Paul Krugman: Why Economics Failed

On Wednesday, I wrapped up the class I’ve been teaching all semester: “The Great Recession: Causes and Consequences.” (Slides for the lectures are available via my blog.) And while teaching the course was fun, I found myself turning at the end to an agonizing question: Why, at the moment it was most needed and could have done the most good, did economics fail?

I don’t mean that economics was useless to policy makers. On the contrary, the discipline has had a lot to offer. While it’s true that few economists saw the crisis coming — mainly, I’d argue, because few realized how fragile our deregulated financial system had become, and how vulnerable debt-burdened families were to a plunge in housing prices — the clean little secret of recent years is that, since the fall of Lehman Brothers, basic textbook macroeconomics has performed very well.