Wray comments on the debate between Keen and Krugman over Minsky, and procedes to elucidate Minsky. Wray was a Phd student of Minsky and is regarded as an expert in Minsky's work. Minsky's work is an an essential building block of MMT macro, along with Godley and Lerner. Many people seem to associate MMT with the influence of Godley and Lerner while being largely unaware of Minsky's influence. It was Minsky who proposed a job guarantee, for example, although the MMT JG is substantially different from Minsky's.
I think it is fair to say that without understanding Minsky's contribution it is impossible to approach MMT as a macro theory, in that Minsky's contributions to understanding the role of money & banking, as well as finance (and financial instability in particular), are crucial elements in the development of MMT macro theory. Unfortunately, most of this work is in professional publications rather than on the blogs, so many people familiar with MMT chiefly through the blogs miss the important role of Minsky's contributions in MMT macro. Professor Wray sets out to correct that in this series that summarizes his previously published work.
WHY MINSKY MATTERS: Part One
by L. Randall Wray | Professor of Economics, UMKC