In my view, Marx has trapped himself. He has been primed to expect a deeper layer of real reality underneath mere appearances. And he has chosen the … - J. Bradford DeLong

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.<p>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.

[W]e have crossed a great divide, between what we used to do in all of previous human history and what we do now. Utopia, it is true, this is not. I imagine Bellamy would be at once impressed and disappointed.
The economic historian helps explain why. ...With our increasing wealth, what used to be necessities become matters of little concern ...conveniences turn into necessities. Luxuries turn into conveniences. And we humans envision and then create new luxuries. ...He saw humanity on a hedonic treadmill: "...the triumph of economic growth is not a triumph of humanity over material wants; rather, it is a triumph of material wants over humanity." ...[T]his hedonic treadmill is one powerful reason why, even when all went very well, we only slouched rather than galloped toward utopia.

Economists’ instincts are that uncertainty about current prices, future prices, and the real meaning of nominal trade-offs between the present and the future; distortions introduced by the failure of government finance to be inflation-neutral; windfall redistributions; and the focusing of attention not on preferences, factors of production, and technologies but on predicting the future evolution of nominal magnitudes must degrade the functioning of the price system and reduce the effectiveness of the market economy at providing consumer utility. The cumulative jump in the price level as a result of the inflation of the 1970s may have been very expensive to the United States in terms of the associated reduction in human welfare.