Maybe they know how much he makes....

Professor Krugman, answering critics who have criticized him for not making a personal appearance to address the Occupy Wall Street folks downtown, notes:

I’ve been granted the enormous privilege of expounding my own views twice a week in the world’s greatest newspaper. I try to make the best use of that privilege, doing all I can to get the truth across and also advocating for what I believe to be the right policies. There are, however, some restrictions that come with the privilege; one of them is not crossing the line between advocate and activist. And there are good reasons for drawing that line.

Translation:   “It would cost me my paycheck.”

First time he’s made sense that I can recall.