Legal fiction
A legal fiction is a construct used in law where, in order to facilitate a specific outcome, a position is taken to be true, even if such a position is not literally true. Legal fictions can be employed by the courts or found in legislation.
Legal fictions are different from legal presumptions which assume a certain state of facts until the opposite is proved, such as the presumption of legitimacy.
The term legal fiction is sometimes used in a pejorative way. Jeremy Bentham was a famous historical critic of legal fictions. Proponents of legal fictions, particularly of their use historically, identify legal fictions as "scaffolding around a building under construction".