The new Palin profile in Vanity Fair. Haven’t read it yet, just bumped across a significant passage. A rival candidate for governor speaks:

Andrew Halcro later remembered that he and Palin once compared notes about their many encounters, and she said, “Andrew, I watch you at these debates with no notes, no papers, and yet when asked questions, you spout off facts, figures, and policies, and I’m amazed. But then I look out into the audience and I ask myself, Does any of this really matter?”

 If true, very suggestive for a point raised in comments here. We were talking about Palin’s notorious scoffing at a research project involving fruit flies. Billjac  said the governor didn’t care whether or not her point was true. Looks like he has some good ammunition for his claim.
update, Andrew Sullivan makes this point about Palin’s lying:

the same classic pattern of categorically denying things that are categorically and patently and verifiably true. This is not, as this blog noted in the campaign, the typical political lie, the Clintonian parsing of truth or lying when the truth cannot easily be discovered. It is the statement that it is night when it is clearly, by universal aggreement, three o’clock in the afternoon. 

I expect that’s different from the question of whether Palin cares about the untruth or truth of her statements.