  Even if one accepts that category mistakes are contentful, uses of category mistakes in fiction have significant implications for the philosophy of language. For example, Nolan (2015) argues that fictions involving personified abstract entities (e.g., fiction in which Death is a character) entail that fictions routinely feature substantive impossible contents. This observation is important because it presents a challenge for accounts of contents which take them to be as coarse grained as possible worlds, as on such accounts there is  only one impossible  proposition.[33]