|Propositional knowledge, philosophy: the knowledge of whether certain propositions are true or false in contrast to a knowledge-how or possessing an ability. A problem with propositional knowledge are indexical theorems because the determination of the truth value (true or false) is context-dependent and situation-dependent here. See also propositions, opacity, example of the two omniscient Gods._____________Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments.