ssets either through a giant fund, or, more likely, a federally supported bad bank designed to buy up troubled investments. But in that case, taxpayers might well be the losers: They would have all of the banks’ worst assets and none of their performing loans. And unless a deal is worked out to take a larger share of the banks whose bad loans are shuffled off to the government, the taxpayers would not have the chance to benefit by selling the shares back to private investors.

Moreover, cleaning up the banks’ bad assets, without extracting a heavy price for the bank managers, shareholders and their lenders, is exactly what Mr. Summers and Mr. Geithner warned against during the Asian financial crisis.

“We told the Asians that they had to be willing to let banks and companies fail,” said Jeffrey Garten, a professor at the Yale School of Management and a top official in the Clinton administration. “We warned that there was great moral hazard if governments just bailed them out.”

“And now,” he said, “we are doing the polar opposite of our advice.”null