Look: you know how much I love the guy, and you know how much of a high-information viewer I am, and I can see the logic of some of Obama's meandering, weak, professorial arguments. But this was a disaster for the president for the key people he needs to reach, and his effete, wonkish lectures may have jolted a lot of independents into giving Romney a second look.
Obama looked tired, even bored; he kept looking down; he had no crisp statements of passion or argument; he wasn't there. He was entirely defensive, which may have been the strategy. But it was the wrong strategy. At the wrong moment.
The person with authority on that stage was Romney—offered it by one of the lamest moderators ever, and seized with relish. This was Romney the salesman. And my gut tells me he sold a few voters on a change tonight. It's beyond depressing. But it's true.