John Maynard Keynes who is considered to be the father of Macroeconomics by many once said "In the long-run we are all dead” to emphasize why decision-makers should not worry about long-run effects of policies. As we have also learned in this module changes in the money supply don’t have any effect on real aggregates like production in the long-run. However why do you think many countries still use monetary policies to stabilize their economy?