'Demand, Supply, and Macroeconomic Models'

Paul Krugman on macroeconomic models:

Demand, Supply, and Macroeconomic Models: I’m supposed to do a presentation next week about “shifts in economic models,” which has me trying to systematize my thought about what the crisis and aftermath have and haven’t changed my understanding of macroeconomics. And it seems to me that there is an important theme here: it’s the supply side, stupid. ...