There is serious debate to be had here, not because of any hostility to MMT (indeed I personally regard MMT with sympathy as a more radical form of Post Keynesianism), but in the spirit of constructive criticism.Read it at Social Democracy for the 21st Century
Some Serious Criticism of MMT
by "Lord Keynes"
About that the post of Sergio Cesaratto, “The Spurious Victory of MMT,” at Naked Keynesianism, linked to recently here at MNE.
Lord Keynes provides a Bill Mitchell quote that addresses this objection.