This paper compares Marx's economics with those by Sraffa, Keynes, Kalecki and Minsky. The paper takes an "ex post" view on the matter and rather looks at the output side of the respective authors, but not at the input side. This means no attempt is made at studying in a systematic way, if and...

1. Introduction -- 2. Keynes’s Theory in the Making -- 3. How Did Keynes Transform His Theory from the Tract into the Treatise? -- 4. How, and for How Long Did Keynes Maintain The Treatise Theory? -- 5. The Turning Point in Keynes’s Theoretical Development -- 6. Keynes as a Planner and...