1. I don’t think you would have accepted such laziness and sloppiness in a term paper from one of your students, so why do you accept it from yourself? What does the failure to do such basic thinking with numbers say about the extent to which anything you write can be trusted?
    — 

    Fellow Chicago University Professor Pierrehumbert of Geosciences in an open letter to Steve Levitt, Economics, author of Superfreakonomics.

    RealClimate