The dominant model for explaining the world relies on a binary system: observations are categorized as either A or B, black or white, being or non-being. In short, this model adheres to a strict dualism rooted in the two-valued logic introduced by Aristotle. But how can we account for contradictory, opposing, or non-binary phenomena – particularly in architecture? Early efforts to translate this question into architectural discourse can be found in the work of Doris and Ralph Thut, who in turn draw on Gotthard Günther’s concept of a many-valued — or polycontextural — logic. This study applies these ideas to a fundamental architectural element: the door.