It is usually admitted that an ideally rational economic agent must be endowed with perfect deductive abilities applied to correct and consistent beliefs and preferences. Since such requirements must exclude change in taste as well as learning, omniscience and even science of the future would be...

The radical apriorism of Mises and Rothbard has frequently been violently criticized. Without attempting to rehabilitate this excessive thesis, the paper will revisit the intuition, originating in Kant, from which apriorism was developed. Taking as an example the "law" of diminishing marginal...