Michael De Fitch's paradox of knowability and empirical negation

UConn Logic Colloquium, 9 February 2024 Michael De (Utrecht) “Fitch's paradox of knowability and empirical negation“ I propose a natural intuitionistic solution to Fitch’s paradox of knowability that does not rely on restricting the verificationist principle that all truths are knowable. The proposal turns on an understanding of negation that is applicable to empirical discourse, which is essential to making sense of verificationism in the first place.