Radical Conventionalism and Hinge Epistemology

In the paper I explore some hints one can find in an updated version of Ajdukiewicz’s radical conventionalism that may help to resolve some controversies within hinge epistemology, i.e. a family of positions that invoke Wittgenstein’s idea of groundless grounds of knowledge. In particular I put into doubt whether there is a real difference between pragmatic and transcendental justification of hinges, I reject epistemological disjunctivism, and I argue for anti-realistic reading of truth in a context determined by particular hinges while retaining the classical notion of truth as a regulative idea of knowledge that governs the possible revisions of hinges.