The uniqueness thesis claims that, given a body of evidence, one of these attitudes is the rationally justified one.
Attitude is described by credence, which is the degree of belief in a certain proposition, also referred to as subjective bayesian probability”.
[4] On the other hand, it is obviously true for a belief that results from deductive reasoning under truth conducive conception.
Kopec and Titlebaum describe the controversy over this thesis as follows: “The debates over Uniqueness raise a number of very puzzling issues.
And, similarly, why is it so very difficult for permissivists to devise a counterexample that can convince Uniqueness defenders to abandon it?