  Other definitions suffer from not being sufficiently theoretically neutral, relying on specific controversial accounts of category mistakes. For example, one might try to define category mistakes as sentences that are syntactically well-formed but meaningless. But as we shall see both parts of this proposed definition depend on controversial assumptions about the nature of category mistakes: that they are syntactically well-formed (cf. §3.1) and that they are meaningless (cf. §3.2.1). Moreover, even if we are willing to eschew theoretical neutrality, note that most of the accounts discussed do not offer an obvious way to distinguish category mistakes from other linguistic phenomena. For example, according to the truthvaluelessness view (§3.2.3) category mistakes are contentful but truth-valueless but, at least according to many philosophers, so are some instances of vague sentences such as ‘John is tall’. And according to the presuppositional approach (§3.4), category mistakes suffer from a presupposition failure, but then so do sentences that are not category mistakes such as ‘The king of France is bald’.