  Corresponding to these three kinds of semantic values are three different semantic accounts of category mistakes: according to the first (‘the meaninglessness view’), category mistakes are syntactically well-formed but meaningless; according to the second (‘the contentlessness view’) they are meaningful but lack content; according to the third (‘the truthvaluelessness view’), they are meaningful and have a content, but lack a truth-value (or at least lack one of the two standard truth-values, true and false).