Abstract

Ramseyan decision theory is the best explication of the philosophical model of folk-psychology. Davidson contends that its basic axioms are synthetic a priori truths of human psychology. This contention admits being reduced to the claim that human agents have to be regarded as rational betters. Tversky and Kahneman challenge this claim. Consideration of the evidence indicates that theory-contradicting interpretations of human actions make frequently more cognitive sense and are more 'commonsensical' than theory-preserving interpretations. Thus, the philosophical model of folk- psychology fails in two ways: as an empirical theory of human action and as a model of our folk-psychological interpretive practices.