The difference being historians have facts to go by, and economists have dreams.

Implying economists use anything but data in developing macroeconomic forecasts is just absurd. Give it a rest.

Wait, what? Maybe the Austrian School goes by theory if that, but every other school of economics goes by facts -- including the Chicago School, Monetarists, Keynesians, New Classical, etc.

Economists' whole basis for their arguments is through empirical data and mathematical facts. Saying economists just relies on dreams is absolutely absurd and shows complete ignorance of the field.