The Federal Reserve’s decision to lower interest rates by half a percentage point, announced on September 18th, is momentous for two reasons. As the first cut by America’s central bank since it lifted rates to quell inflation, it marks the start of a monetary-easing cycle. It also represents a bet by the Fed that inflation will soon be yesterday’s problem and that action is needed to support the labour market. For the first time since 2005, one of the Fed’s governors in Washington, DC, dissented from the decision. Michelle Bowman preferred to cut rates by a quarter-point.