The mainstream economics profession is not saying much during the crisis apart from some of the notable interventions from conservatives and a few not-so conservative economists. In general, what can they say? Not much at all. The frameworks they use to reason with are deeply flawed and bear no relation at the macroeconomic level to the operational realities of modern monetary economies. Even the debt-deleveraging (progressives) use such stylised models which negate stock-flow consistency that their ability to capture sensible policy options are limited. This blog discusses New Keynesian theory which is a current fad among mainstream economists and which has been defended strongly by one of its adherents in a recent attack on Paul Krugman. The blog is a bit pointy.