(Okay, I'll bite). Von Mises was the mentor of Hayek. You know, the one who won the Nobel Price?
F.A. Hayek... he has also led the way in attacking the mathematical models and the planning pretensions of the would-be "scientists," and in integrating economics into a wider libertarian social philosophy.
Perhaps one reason is the evident and galloping breakdown of orthodox Keynesian "macroeconomics," which leads even the most hidebound economists to at least consider alternative theories and solutions.
Everybody is drowning in debt, but hey let's just print more and we'll all get wealthy.