While many mainstream economists have been coming out to defend their reputations against the growing awareness that Modern Monetary Theory (MMT) presents a direct challenge to their hegemony, some of the mainstream haven’t responded at all and continue to confirm what the standard mainstream macroeconomics is about and how far removed from MMT it really is. The MMT critics claim that there is nothing new in MMT (‘we knew it all along’) in one breathe, and then ‘MMT is crazy dangerous’ in another, without seemingly realising how conflicted that juxtaposition is. But when leading mainstreamers, who are not engaging with the public MMT discussion going on, publish their Op Ed pieces, we gain an insight into what the mainstream is really about despite all the attempts by other mainstreamers to co-opt as much of MMT as they can while still claiming it is crazy. A recent Op Ed article in the Wall Street Journal (March 20, 2019) – The Debt Crisis Is Coming Soon – by Harvard economics professor Martin Feldstein – is a great demonstration of the DNA of mainstream macroeconomics. MMT presents a diametrically opposed view to this standard mainstream analysis. There is no correspondence possible between the two positions.