Last thing. Mea culpa, mea culpa. MIT and Wharton and University of Chicago created the financial engineering instruments, which, like Samson and Delilah, blinded every CEO -- they didn't realize the kind of leverage they were doing and they didn't understand when they were really creating a real profit or a fictitious one.
Well, I'd say, and this is probably a change from what I would have said when I was younger: Have a very healthy respect for the study of economic history, because that's the raw material out of which any of your conjectures or testings will come. And I think the recent period has illustrated that. The governor of the Bank of England seems to have forgotten or not known that there was no bank insurance in England, so when Northern Rock got a run, he was surprised. Well, he shouldn't have been.
But history doesn't tell its own story. You've got to bring to it all the statistical testings that are possible. And we have a lot more information now than we used to.