Presuppose

[Sarah]

To suppose beforehand; to imply as antecedent; to take forgranted; to assume; as, creation presupposes a creator.Each [kind of knowledge] presupposes many necessary things learned inother sciences, and known beforehand. Hooker.

[Michiko]

to accept that something is true before it has been proved:

[Agnes]

(of an action, process, or argument) require as a precondition of possibility or coherence.