In retrospect, last week’s debunking of one of the key conclusions of Kenneth Rogoff and Carmen Reinhart about government debt looks inevitable. The whole story, from the initial lavish praise for the Harvard professors to the current harsh criticism, is a sad reminder of the power of ideology in the angry debate over economic policy.
“Go into the street, and give one man a lecture on morality, and another a shilling, and see which will respect you most.” Samuel Johnson said that in the 18th century, but the general preference for money over preaching is sufficiently strong and timeless that his wry quip remains pertinent. Most economists take Johnson’s sentiment too seriously. They assume that people always want more shillings and always resist wealth-denying morality. That is a serious error.