Remember Friday March 14 2008: it was the day the dream of global free- market capitalism died. For three decades we have moved towards market-driven financial systems. By its decision to rescue Bear Stearns, the Federal Reserve, the institution responsible for monetary policy in the US, chief protagonist of free-market capitalism, declared this era over. It showed in deeds its agreement with the remark by Joseph Ackermann, chief executive of Deutsche Bank, that "I no longer believe in the market's self-healing power". Deregulation has reached its limits.

Mine is not a judgment on whether the Fed was right to rescue Bear Stearns from bankruptcy. I do not know whether the risks justified the decisions not only to act as lender of last resort to an investment bank but to take credit risk on the Fed's books. But the officials involved are serious people. They must have had reasons for their decisions. They can surely point to the dangers of the times - a crisis that Alan Greenspan, former chairman of the Federal Reserve, calls "the most wrenching since the end of the second world war" (this page, March 3) - and the role of Bear Stearns in these fragile markets.