 Clearly, the expected degree of truthlikeness of a proposition \(is\) epistemically accessible, and it can serve as our best empirical estimate of the objective degree of truthlikeness. Progress occurs in an inquiry when actual truthlikeness increases. And apparent progress occurs when the expected degree of truthlikeness increases. (See the entry on  scientific progress,  §2.5.) This notion of expected truthlikeness is comparable to, but sharply different from, that of epistemic probability: the supplement on  Expected Truthlikeness  discusses some instructive differences between the two concepts.