Some A.I.G. employees, to take one example, had to have understood what their credit derivative division in London was doing. But more innocent optimism probably played a role, too. The human mind has a tremendous ability to rationalize, and the possibility of making millions of dollars invites some hard-core rationalization.
Either way, the bottom line is the same: given an incentive to loot, Wall Street did so. “If you think of the financial system as a whole,” Mr. Romer said, “it actually has an incentive to trigger the rare occasions in which tens or hundreds of billions of dollars come flowing out of the Treasury.”
Unfortunately, we can’t very well stop the flow of that money now. The bankers have already walked away with their profits (though many more of them deserve a subpoena to a Congressional hearing room). Allowing A.I.G. to collapse, out of spite, could cause a financial shock bigger than the one that followed the collapse of
Lehman Brothers. Modern economies can’t function without credit, which means the financial system needs to be bailed out.
