Behind all the back and forth over the Stimulus Bill is a simple fact: the debate in Washington is rapidly moving away from any recognition that the US economy — and the global economy, for that matter — is in free-fall. The range of outcomes stretches from severe recession to something closer to a replay of the Great Depression, though that label is perhaps better seen as a placeholder for ‘catastrophic economic collapse’ since the underlying place of the US economy in the world economy is very different from what it was in 1929. This reality was palpable in the political debate until as recently as a few weeks ago. But Republicans are using a strategy of conscious denial to push it off the stage.

Take stock of the last few weeks and you can almost visualize the two conversations — path toward economic calamity and debate over Stimulus Bill — diverging.

The other key into the current debate is that the Republican position is ominously similar to their position on global warming or, for that matter, evolution. The discussion of what to do on the Democratic side tracks more or less with textbook macroeconomics, while Republican argument track either with tax cut monomania or rhetorical claptrap intended to confuse. It’s true that macro-economics doesn’t make controlled experiments possible. And economists can’t speak to these issues with certainty. But in most areas of our lives, when faced with dire potential consequences, we put our stock with scientific or professional consensus where it exists, as it does here. Only in cases where it goes against Republican political interests or economic interests of money-backers do we prefer the schemes of yahoos and cranks to people who study the stuff for a living.

Of course, at some level, why would Republicans be trying to drive the country off a cliff? Well, not pretty to say, but they see it in their political interests. Yes, the DeMints and Coburns just don’t believe in government at all or have genuinely held if crankish economic views. But a successful Stimulus Bill would be devastating politically for the Republican party. And they know it. If the GOP successfully bottles this up or kills it with a death of a thousand cuts, Democrats will have a good argument amongst themselves that Republicans were responsible for creating the carnage that followed. But the satisfaction will have to be amongst themselves since as a political matter it will be irrelevant. The public will be entirely within its rights to blame Democrats for any failure of government action that happened while Democrats held the White House and sizable majorities in both houses of Congress.