I must say, I'm more than a little perplexed by what sent Bob Novak over the edge on CNN today (see post below).

Watching it a few times, what Carville said just wasn't anything out of the ordinary given the sort of verbal fisticuffs Novak normally deals in. On first blush, the fact that host Ed Henry was about to ask Novak questions about the Plame case suggests that maybe he was looking for an excuse to duck out. But that doesn't really make sense either. After all, Novak's been BSing (shall we say) about the Plame case for two years now. Why stop now?

Clearly, the sort of stuff that leads a veteran reporter like Novak to flip out on camera and march off the set doesn't necessarily work by linear, logical reasoning. He did march off, after all. So something must have been eating at him. And the Plame saga (broadly speaking) must be the dominant issue in the guy's life at the moment. But I still don't think I've seen an adequate explanation or even a solid theory.

(ed.note: Got a theory? We're discussing them here.)