  So far, we have sketched the presuppositional account in very general terms. However, there are a variety of different ways to develop the account. A first key question is how presupposition failure affects the truth-value of a sentence. Category mistakes aside, the literature on presupposition is split between views which maintain that sentences suffering from presupposition failure are truth-valueless, and those that maintain that while presupposition failure leads to infelicity, such sentences are nevertheless truth-valued. The former approach maintains that ‘The king of France is bald’ is truth-valueless, while the latter deems it to be infelicitous but false.