"The Good Economist Hayek is the thinker who has mind-blowing insights into just why the competitive market system is such a marvelous societal device for coordinating our by now 7.2 billion-wide global division of labor. Few other economists imagined that Lenin’s centrally-planned economy behind the Iron Curtain was doomed to settle at a level of productivity 1/5 that of the capitalist industrial market economies outside. Hayek did so imagine. And Hayek had dazzling insights as to why. Explaining the thought of this Hayek requires not sociology or history of thought but rather appreciation, admiration, and respect for pure genius.The Bad Economist Hayek is the thinker who was certain that Keynes had to be wrong, and that the mass unemployment of the Great Depression had to have in some mysterious way been the fault of some excessively-profligate government entity (or perhaps of those people excessively clever with money–fractional-reserve bankers, and those who claim not the natural increase of flocks but rather the interest on barren gold). Why Hayek could not see with everybody else–including Milton Friedman–that the Great Depression proved that Say’s Law was false in theory, and that aggregate demand needed to be properly and delicately managed in order to make Say’s Law true in practice is largely a mystery. Nearly everyone else did: the Lionel Robbinses and the Arthur Burnses quickly marked their beliefs to market after the Great Depression and figured out how to translate what they thought into acceptable post-World War II Keynesian language. Hayek never did. My hypothesis is that the explanation is theology: For Hayek, the market could never fail. For Hayek, the market could only be failed. And the only way it could be failed was if its apostles were not pure enough."