I wrote this morning’s column partly because I had a hunch that the Obama people might be thinking too small on stimulus. Now I have more than a hunch – I’ve heard an unreliable rumor! So let’s talk about stimulus math, as I see it.

Actually, before I get to the math, some concepts. Nearly every forecast now says that, in the absence of strong policy action, real GDP will fall far below potential output in the near future. In normal times, that would be a reason to cut interest rates. But interest rates can’t be cut in any meaningful sense. Fiscal policy is the only game in town. Continue reading