According to libertarian economists Tyler Cowen and Richard Fink, Rothbard wrote that the term evenly rotating economy (ERE) can be used to analyze complexity in a world of change. The words ERE had been introduced by Mises as an alternative nomenclature for the mainstream economic method of static equilibrium and general equilibrium analysis. Cowen and Fink found "serious inconsistencies in both the nature of the ERE and its suggested uses". With the sole exception of Rothbard, no other economist adopted Mises' term and the concept continued to be called "equilibrium analysis".