Is Every Truth Knowable? Reply to Williamson

This paper addresses an objection raised by Timothy Williamson to the ‘restriction strategy’ that I proposed, in The Taming of The True , in order to deal with the Fitch paradox. Williamson provides a newversion of a Fitch‐style argument that purports to show that even the restricted principle of knowability suffers the same fate as the unrestricted one. I show here that the new argument is fallacious. The source of the fallacy is a misunderstanding of the condition used in stating the restricted knowability principle. I also rebut WilliamsonÕs criticism of my argument for the claim that any proposition of the form ‘it is known thatφ’ is decidable if φ is decidable