Practical and scientific rationality: A Bayesian perspective on Levi's difficulty

Abstract

In ‘Practical and Scientific Rationality: A Difficulty for Levi's Epistemology,’ Wayne Backman points to genuine difficulties in Isaac Levi's epistemology, difficulties that Backman attributes to Levi's having required, and for no good reason, that a rational person adopt but one standard of possibility for all her endeavors practical and scientific. I argue that Levi's requirement has, in fact, a deep and compelling motivation that tips the scales in favor of a different diagnosis of Levi's ills — i.e., that Levi's error lies simply in his having set insufficiently high qualifications for admission into the corpus that determines a person's standard of possibility.