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...

This paper provides a brief introduction to post-Keynesian economics. Post-Keynesians are sceptical of the usefulness of the equilibrium method, and favour an approach based on path-determined models with, due to the influence of uncertainty on economic decisions, an important role assigned to...