The – Washington Consensus – has been out in full force this week with the US Federal Reserve and the RBA increasing interest rates further despite all the indications that inflation peaked months ago and its downward trajectory has had little if anything to do with the ridiculous interest rate rises since early 2022. Both banks, along with most other central banks, are just thumbing through the New Keynesian textbook to get their direction and pretending to be capable of assessing the situation correctly. Neither the textbooks nor the assessments are remotely accurate and unnecessary pain is just being inflicted on low income mortgage holders. But the public barely know that there is a grand global experiment being conducted by central banks which allow us to reflect on the veracity of competing economic theories and approaches. Most central banks are hiking rates at present as a reflection of the dominance of the New Keynesian prioritisation of monetary policy as a counter-stabilising, anti-inflationary policy tool over fiscal policy. One central bank is not following suit – the Bank of Japan. The BOJ has not shifted rates, is maintaining its yield curve control policy and the government is expanding fiscal policy. The diametric opposite to the New Keynesian approach. We now have enough data to assess the relative merits of the two approaches. Japan has lower inflation, no currency crisis and its citizens are better off as a result of the monetary-fiscal policy initiatives.