 Also, there will always be possible subsets of genres of each subgenre.How far genres are subdivided is pre-determined for the sake of a default, but researchers have the option of making the divisions more general or specific according to their needs.Categorisation is also a problem, as certain texts, while deemed to belong to an interdisciplinary genre such as linguistics, include content that is subsequently categorised into either arts or science categories due to the nature of their content.