They never wrote about it, talked about it, and, did quite the opposite – yet they knew it all along!
During the GFC, a new phenomenon emerged – the ‘We knew it all along’ syndrome, which was characterised my several mainstream New Keynesian macroeconomists coming out and claiming that some of the insights provided by Modern Monetary Theory (MMT) economists were banal and that their own theoretical framework already accommodates them. The pandemic has brought a further rush of the ‘We knew it all along’ syndrome. Apparently, mainstream macroeconomics is perfectly capable of explaining the fiscal reality the world has found itself in and there is no need to MMT, which, by assertion, is saying nothing new. These sorts of statements are not coming from Facebook or Twitter heroes who might have done a few units in economics or even acquired a degree in the discipline. They are coming from senior professors in the academy. The curious thing, which really lifts their cover, is that if you examine the academic literature you won’t find much reference to these sorts of ‘insights’ at all. What you find, and what students are taught, are a completely different set of propositions with respect to fiscal policy. So if they ‘knew it all along’ why didn’t they ever write about it? Why is their published academic work replete with conclusions that run contrary to the conclusions MMT economists make? You know the answer. These ‘knew it all along’ characters have just been caught out by the poor empirical performance of their paradigm and now they are trying to salvage their reputations and position by trying to blur history. They really should be sacked.