If I had been running things 13 months ago, the United States Treasury and Federal Reserve would have let Lehman and AIG fail – but I would have discounted their debt for cash at face value, provided that the debt also came with sufficient equity warrants. That would have preserved the functioning of the system while severely punishing the banking and shadow-banking systems’ equity holders, and today nobody would be claiming that their risk management practices were adequate and did not need reform.