In the February issue of Quadrant, Steven Kates laments the resurrection of Keynes, and warns his readers not to fall for the doctrines of a man who denied one of the key laws of economics. According to Kates, Say’s Law
is a proposition that since 1936 every economist has been explicitly taught to reject as the most certain obstacle to clear thinking and sound policy. Economists have thus been taught to ignore the one principle most necessary for understanding the causes of recessions and their cures. Worse still, they have been taught to apply the very measures to remedy downturns that are most likely, from the classical perspective, to push them into an even steeper downward spiral.[3]
Anyone who takes the trouble to follow up Footnote 3 will find Kates’s thesis unravelling immediately:
3. It might be hard for non-economists to appreciate just how deeply felt the rejection of Says Law is. Such attitudes are, however, not universal. Schumpeter, in full knowledge of what Keynes had written, was himself still able to write Says Law is obviously true. It is neither trivial nor unimportant. ([1954] 1986: 617)
‘Deeply felt’ apparently refers to the economist’s sense of despair that such a hard won insight as Say’s Law was jettisoned at the instigation of this wrongheaded Cambridge demagogue. Schumpeter is presented as a bastion of sanity and a beacon of hope that truth will prevail.
However, it turns out that Schumpeter’s first sentence, when rendered completely, is actually ‘As stated, Say’s Law is obviously true.’ Like every other serious scholar of economic thought — that is, the ones who don’t have an axe to grind — Schumpeter recognises that Say’s Law covers a cluster of distinct but interrelated propositions which the early classical economists, including Say, Malthus, Ricardo and James Mill, tended to muddle, one with the other, in the most excruciating fashion. This particular section of his History of Economic Analysis is devoted to unpicking the tangle and isolating the proposition that constituted a genuine insight — that is, both true and non-trivial.
Next Schumpeter considers Keynes. And guess what? It turns out that ‘Keynes, of course, never meant to contradict the proposition that has been called Say’s Law above. (p.623)’ So what is Kates playing at? (Continued)