Shorter Mankiw

How do you tell when Krugman is lying? Either his lips are moving or he's typing.
BTW, did anyone else catch Geithner saying on Meet the Press that the number of jobs saved by the stimulus is a fact? Really Timmy? A fact? I accept that it's your best guess at the effect, that the estimate was made in good faith, etc. But it is by no means a fact. It's an estimate based on some models. No more, no less.