  One way to account for the infelicity of category mistakes is to maintain that they are syntactically ill-formed. The most substantial defense of this approach appeared in Chomsky’s 1965 monograph Aspects of the Theory of  Syntax.[10]  Chomsky’s account proceeds roughly as follows. In addition to assignments of general grammatical categories such as ‘noun’ and ‘verb’, lexical items also receive what Chomsky calls ‘selectional features’. For example, even though ‘boy’ and ‘sincerity’ are both nouns, the former receives the selectional features ‘+animate’, and ‘-abstract’, while the latter receives the features ‘-animate’, and ‘+abstract’. Verbs and adjectives are also marked with selectional features, representing, for each argument place, the kinds of argument they accept. For example, the verb ‘admire’ expects a ‘+animate’ for its subject argument, thus predicting that ‘The boy admires sincerity’ is grammatical, while the category mistake ‘Sincerity admires the boy’ is not.  