Slower growth in ageing economies is not inevitable

FOR THE first time in history, the Earth has more people over the age of 65 than under the age of five. In another two decades the ratio will be two-to-one, according to a recent analysis by Torsten Sløk of Deutsche Bank. The trend has economists worried about everything from soaring pension costs to “secular stagnation”—the chronically weak growth that comes from having too few investment opportunities to absorb available savings. The world’s greying is inevitable. But its negative effects on growth are not. If older societies grow more slowly, that may be because they prefer familiarity to dynamism.