It is my Friday lay day and that means brevity, even if that is a relative concept. I have received several E-mails lately about claims that Modern Monetary Theory (MMT) economists are zealots who overstate their case and are nothing much more than Keynesians with some fancy jargon. It is lovely how complete strangers feel it is their place to write abusive E-mails to you as if you are some sort of inanimate object. But that is not the point here. Several of these E-mails noted that a prominent Australian economist had largely dismissed MMT, despite his progressive leanings, because “it doesn’t change the basic equation that, in the long run, public expenditure is paid for by taxes”. Apparently, this criticism was made in the context of the Russian problems at present, which I may or may not deal with in another blog, depending on whether I get time to research a few things. The Russian situation is not central to my research at present and I do not have a lot of time to really delve into it. But what about this “long run” failing of MMT?