The golden age of low inflation and gently sinking bond yields made many a humdrum investor latching on to basic stock market indices look like a genius. We are starting to see how it made central bankers look like superheroes too.
Cast your mind back to July 2012. The eurozone’s government bond market was in a mess, with Greece at the centre and ripples lapping at any other member state seen as fiscally shaky. Generally sober people,…