Three significant changes to the macroeconomic policy regime in advanced economies, compared to the post-global financial crisis period, have unfolded in the last two years. First, fears of a chronic insufficiency of aggregate demand as a growth deterrent prevailing after the 2008 global financial crisis, have been superseded by supply-side shocks and inflation. Second, as a result of the first change, the era of abundant and cheap liquidity provided by central banks has given way t ...