The market v the real economy

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STOCKMARKET HISTORY is packed with drama: the 1929 crash; Black Monday in 1987, when share prices lost 20% in a day; the dotcom mania in 1999. With such precedents, nothing should come as a surprise, but the past eight weeks have been remarkable, nonetheless. A gut-wrenching sell-off in shares has been followed by a delirious rally in America. Between February 19th and March 23rd, the S&P 500 index lost a third of its value. With barely a pause it has since rocketed, recovering more than half its loss. The catalyst was news that the Federal Reserve would buy corporate bonds, helping big firms finance their debts. Investors shifted from panic to optimism without missing a beat.

This rosy view from Wall Street should make you uneasy (see article). It contrasts with markets elsewhere. Shares in Britain and continental Europe, for example, have recovered more...