Underpinning this authoritative nature of prose is the taxonomy of genre. Some genres are serious and important, others are less so, and others are negligible. It is demonstrative that the western dominant culture and hegemony has as its strong basis the desire to categorise and to order. In doing so, it relies upon lists which ascribe importance from best to worst. In writing, genre is clearly a part of this urge to make lists, to give value, and to control by categorising.
Important genre is scientific writing.
It is full of factual data. It claims to be disinterested as though its practices come from outside the culture itself and are fully inclusive that is, no choices are made about what should be researched and why and who should be the subjects and who should provide the money. Pure' science is probably at the top of the genre list, women's magazines are towards the bottom. This is instructional, because the latter are full of advice about how to dress, eat, run relationships, bring up children, or make things. Clearly such everyday activities are low on the scale of importance.