Andrew notes that the birthers ranks have thinned substantially, proving Fallows (and myself!) wrong:

Here we have a wonderful real-world test: if 'actual knowledge' mattered, the number of people who thought Obama was foreign-born would approach zero by next week -- with exceptions for illiterates, the mentally disabled, paranoid schizophrenics, etc. My guess is that the figures will barely change

We all know the Jim is never wrong, so much as as he either "totally right" or "somewhat less totally right."  It's been said before, but birther ratings probably bear some relationship to approval ratings. I'm not sure how much of this is "actual knowledge" and how much of it is "dude murked Bin Laden." This is a good week for the president. May he have many more. 

As for me, I perpetually stand corrected. 

And, I think this kid is the same age as my son...