But the role that Cramer and other financial journalists played was incidental. There was not much they could do, anyway. They do not have subpoena power. They cannot barge into AIG and demand to see the books, and even if they could, they would not have known what they were looking at. The financial instruments that Wall Street firms were both peddling and buying are the functional equivalent of particle physics. To this day, no one knows their true worth.

It does not take cable TV to make a bubble. CNBC played no role in the Tulip Bubble that peaked, as I recall, in 1637, or in the Great Depression of 1929-41. It is the zeitgeist that does this — the psychological version of inertia: the belief that what’s happening will continue to happen.

Stewart, too, rides the zeitgeist. The hunt is on for culprits and scapegoats, and Stewart has served up a cliche: the media.