THE AMBIGUITY OF KNOWABILITY
Barteld P. Kooi · The Review of Symbolic Logic · 2016
Abstract In this paper it is shown that the Verification Thesis (all truths are knowable) is only susceptible to Fitch’s Paradox if one conflates the de re and de dicto interpretation of knowability. A formalisation shows that if one treats knowability as a complex second-order predicate, then the paradox falls apart.