He hasn't been wrong yet. It's just that most Americans are intellectually incapable of understanding the subltle neuance of recovey statistics.
Like the subtle nuance of global warming statistics? When the opposite of what you predict happens it proves your theory.
Nonsense. As one example, any American with even a smattering of experience in business or investment or who paid attention in economics class knows that a "stimulus" plan which is really just a promise to spend money in the future will have little to no effect on the present economic condition. How would the amount of money being spent in the economy today be directly affected by the government funding projects in 2012? (And I mean directly, not some indirect effect of investors or business people changing their plans based on expectations of the future.)
It can't be, which is one reason the "stimulus" plan failed - because it wasn't even a real stimulus plan.
Maybe there's some kind of subtle code used by liberal elitists when they are talking, but I'd say even the cashier at Walmart understands just as much or more about what is really happening in the economy. Krugman's political ideas have long since overwhelmed his scientific thinking -- he's no longer testing to see if his ideas are correct, he's just promoting them.