Paul Krugman has announced it: Hayek is not important, and his views have been "discredited," although he did win the Nobel in 1974 for those "discredited" views.
Now, Krugman did not mention Hayek's Nobel, claiming instead that the only reason Hayek was well-known was for The Road to Serfdom which, of course, was nothing more than a right-wing screed, at least according to Krugman. He also says that in the early 1930s, Hayek "made a fool of himself" and that "his ideas vanished from the professional discussion."
Contra Krugman, Keynes did not do anything more than to rewrite Mandeville's "Fable of the Bees," claiming that the less savings that occurs in an economy, the better the economy will perform. (Capital, as we all know, simply appears like magic.) As for the Austrian Theory of the Business Cycle, Krugman constantly refers to it as a "Hangover Theory," which it is not, and then claims Austrians are saying that artificial expansion of credit leads to "overinvestment" when, in truth, Austrians say there is "malinvestment," which is much different.
Let us not forget that Krugman is claiming that this "liquidity trap" which he claims is in play also means that there is no opportunity cost to more government borrowing, and that when governments print money, they actually are creating more wealth. That is the real meaning of Keynesianism.