Is every truth knowable? Reply to Williamson

This paper addresses an objection raised by Timothy Williamson to the 'rest riction strategy' that I proposed, in The Taming of the True, in order to d eal with the Fitch paradox. Williamson provides a new version of a Fitch-st yle argument that purports to show that even the restricted principle of kn owability suffers the same fate as the unrestricted one. I show here that t he new argument is fallacious. The source of the fallacy is a misunderstand ing of the condition used in stating the restricted knowability principle. I also rebut Williamson's criticism of my argument for the claim that any p roposition of the form 'it is known that phi' is decidable if phi is decida ble.