I’ve long thought that one of the really useful purposes of the Grammarian’s role is that it reminds us that sloppy speech is a sign of sloppy thinking. Here’s Hendrik Hertzberg using Sarah Palin’s interview with Katie Couric to make the same case in reverse in The New Yorker:
This seems to be a case of incoherence of thought leading to incoherence of syntax. Pronouns wander in search of antecedents like Arctic explorers in a blinding snowstorm. Homophones confuse the transcriber.
Check your politics at the door, and follow the link for all of Hertzberg’s analysis.