In a sense, Modern Monetary Theory has won. This is not because policy measures are necessarily in line with what MMT adherents would prescribe. Rather, the debate over economic policy, in particular fiscal policy, is happening on MMT terms. MMTers argue that the constraint on government spending is inflation and real resources -- not credit risk -- and that's exactly how even the critics of the stimulus bill have attacked it, that it will be inflationary. So how has the debate around fiscal policy changed so much over the last several years? Much of the credit goes to Stephanie Kelton, the MMT economist and author of the best-selling book The Deficit Myth. On this episode, we talk about their success.