Fitch's paradox and truthmaking: Why Jago's argument remains ineffective

Abstract

Recently, there have been several attempts to use the kind of reasoning found in Fitch’s knowability paradox to argue for rather sweeping metaphysical claims: Jago (2020) uses such reasoning to argue that every truth has a truthmaker, and Loss (2021) does so to argue that every fact is grounded. This strategy has been criticized by Trueman (2021), who points out that the same kind of reasoning could be used to establish entirely opposite conclusions. In response, Jago (2021) has offered a revised argument that is meant to avoid Trueman’s objection. I argue that this revised argument is in fact undermined by an objection quite similar to Trueman’s.