The latest information from Japan suggests that in December 2023, its inflation fell sharply for the second consecutive month and that one might conclude the inflation episode is coming to an end. The Bank of Japan made the assumption that this supply-side inflation was temporary and would subside fairly quickly once those constraints eased. And they were right. All the other central banks somehow convinced themselves that the inflation was demand-driven and have been needlessly pushing up interest rates. The experiment is nearly over and I think it is clear that the Japanese path was the sound one. At that point, the New Keynesian academics and officials should resign. After that, as it is Wednesday, we have some music to soothe our souls.