Presupposition

Presupposition is a concept in linguistics and philosophy of language that refers to the implicit assumptions or background beliefs that are taken for granted in a statement or utterance. When someone makes a statement, certain information is often presupposed, meaning that it is assumed to be true for the statement to make sense, even if it's not explicitly stated. For example, consider the sentence: "John stopped smoking." This statement presupposes that John used to smoke.