Seven years on from the great financial crisis and despite central banks being seen by many as ‘the only game in town’, there has been a renewed push for monetary policy to experiment even further. One of the latest proposals is the revival of Milton Friedman’s ‘helicopter money’. But have all the implications of what many see as central banks’ ‘nuclear option’ been fully appreciated? This column argues that this is not the case. Realising the benefits that its proponents claim exist would require giving up on interest rate policy forever.