Quote from Ricter:
No one believes that. If you don't think government spending can create jobs, and thus demand, you're insane.
Demand for what? Bridges? I'll take three, assorted colors, please.

Seriously, even if we assume that govt spending CAN take the place of private investment, it can only do so temporarily. You guys shot your wad with a $1,000,000,000,000 "stimulus" that failed to stimulate. Now you want to double down. Who's insane?