Liberals vs Conservatives

James K. Galbraith has pinpointed the defining elements in his piece in the Washington Monthly

The deepest belief of the modern economist is that the economy is a self-stabilizing system. This means that, even if nothing is done, normal rates of employment and production will someday return. Practically all modern economists believe this, often without thinking much about it. (Federal Reserve Chairman Ben Bernanke said it reflexively in a major speech in London in January: "The global economy will recover." He did not say how he knew.) The difference between conservatives and liberals is over whether policy can usefully speed things up. Conservatives say no, liberals say yes, and on this point Obama’s economists lean left. Hence the priority they gave, in their first days, to the stimulus package.