It only took about 6 decades or so. And, in between, there has been denial, fiction, and diversions. But here we are 2022 and work that was explicit in the 1960s is now being recognised by the central bank of the largest economy. In fact, the foundations of this new acceptance goes back to the C19th and was developed by you know who – K. Marx. Then a socialist in the 1940s wrote a path breaking article further building the foundations. And then a group of Marxist economists brought the ideas together as a coherent theory of inflation early 1970s as a counter to the growing Monetarist fiction that inflationary pressures were ultimately the product of irresponsible government policy designed to reduce unemployment below some ‘natural rate’. I am referring here to a Finance and Economics Discussion Series (FEDS) working paper – Who Killed the Phillips Curve? A Murder Mystery – published on May 20, 2022 by the Board of Governors of the US Federal Reserve System. I suppose it is progress but along the way – over those 6 decades – there have been a lot of casualties of the fiction central banks created in denial of these findings.