contrapositive

THAT LIAR LETTERMAN Atrios is following a flap about a clip David Letterman aired on his Tuesday night show. During the day today, CNN reported twice that the White House had called Letterman's clip doctored footage--before later retracting that characterization of the White House's position.

Hmm...

Meanwhile, Letterman says that his source confirms that the White House did indeed talk to CNN about the clip.

Who do you believe?

UPDATE: CNN is maintaining that they never heard from the White House about the clip. But the network doesn't seem to be offering any account of how an "incorrect" characterization of the White House's position snuck its way into the mouths of two different anchors...