||What is modality? The question is hard to make more precise in a theory-neutral way. The different approaches to modality encompassed within this section disagree radically over the sorts of resources that should be invoked when explaining the workings of our modal thought and talk. One widespread approach takes for granted the philosophical perspicuity of possible-worlds semantics, and then seeks to provide a metaphysical interpretation of the semantics. What kind of thing is a possible world? Are worlds linguistic entities, complex properties, fictions, concrete material objects resembling the actual world, or sui generis abstract entities? But other approaches to modality reject the possible-worlds framework, treating modal discourse as descriptive of the essential or dispositional properties of objects, or as expressive of our own inferential dispositions.