Joan Robinson and Michal Kalecki were two of the intellectual giants of twentieth century economics, whose contributions over a significant range of issues have had major impacts on economics. This paper examines the significant communications between them, concentrating on the major cross...

This paper, in honour of John King, addresses the question raised by him in his A History of Post-Keynesian since 1936, reflected in the title. Initial surveys of post-Keynesian economics defined it in term of the Keynesian, Kaleckian and Sraffian strands. However, subsequently, it has become...