Richard Grossman, show us the regression statistics

He claims that economists writing op eds should have regression statistics to back up their claims, then he makes this claim:

Had government spending not increased dramatically, the Great Recession would have morphed into a rerun of the Great Depression.

So, I ask, show me the regression statistics.

This economy is only the second time in modern history (post 1920) that we have suffered such a severe depression. Economists try to extrapolate events from 1930 into 2008. Economists are simply not that good, and Richard Grossman makes the same error as the op ed economists he complains about.

We have no proof that hysterical bankers will shut down the economy.  More likely, though unproven, is that the hysterical bankers would have been  fired and replaced with less hysterical bankers.

There is one thing we know for sure,  mass hysteria seldom lasts more than a few weeks.