The current set of fiscal and monetary policies pursued by central banks and states are all based on lessons drawn from the Great Depression of the 1930s. The successful (if slow and uneven) “recovery” since the 2008-09 global financial meltdown is being touted as evidence that the key determinants of success drawn from the Great Depression are still valid: the Keynesian (or neo-Keynesian) policies of massive deficit spending by central states and extreme monetary easing policies by central banks.
Are the present-day conditions identical to those of the Great Depression? If not, then how can anyone conclude that the lessons drawn from that era will be valid in an entirely different set of conditions?
We need only consider Japan’s remarkably unsuccessful 25-year pursuit of these policies to wonder if the outcomes of these sacrosanct monetary and fiscal policies are truly predictable, or whether the key determinants of macro-economic success and failure have yet to be identified.