It was front page news in the Wall Street Journal. For three long hours last week, there was no trading on the Chicago Board Options Exchange, the home of S&P 500 stock index options and the Vix volatility index. The Journal quoted a trader: “It was very, very unnerving”. Risks went unhedged. Experts worried about the effect of a more grievous software fault on an even more important exchange. What would happen then?
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.
Monetary policy these days is complicated, ineffective, and quite possibly immoral. The complexity is inevitable; there is no simple way to ensure that the supply of money and credit is appropriate in a large modern economy. The ineffectiveness is evident: central bankers let that supply grow too fast before the 2008 financial crisis, and have unable to return monetary conditions to normal since then.
“It has been computed by some political arithmetician that if every man and woman would work for four hours each day on something useful, that labour would produce sufficient to procure all the necessaries and comforts of life … and the rest of the 24 hours might be leisure and happiness.”
What is the right size for pensions? That question can be approached in two ways: “then” and “now”. Pensions, and other economic arrangements to support elderly people, may be considered repayments for what they did back then, when they were young. Alternatively, these payments may be considered as a share of output right now. In rich countries, the two approaches are in conflict. The “then” logic, which is based on promises made long ago, supports higher pension payments than the “now” logic, which is mindful of rapidly ageing populations. Politicians struggle to find acceptable compromises between the two approaches.