Lachmann and the wilderness: On Lachmann's radical subjectivism

Abstract

This paper deals with the question why in the 1940s and 1950s Ludwig Lachmann (1906–1990) failed to revive Austrian economics. Lake Keynes and Hayek, Lachmann pointed out that expectations, and hence knowledge, are important determinants of (cyclical fluctuations in) investment and economic activity. He thereby emphasized that the process of knowledge acquisition is indeterminate and open‐ended. This indeterminateness is difficult to reconcile with neoclassical attempts to provide economics with internally consistent microfoundations. This fundamental difference between his and the neoclassical research agenda explains Lachmann's failure to revive Austrian economics.