# Negative meta-knowledge may be a large portion of all we know by Marvin Minsky > "Negative meta-knowledge may be a large portion of all we know." > **— Marvin Minsky**, *Jokes and their Relation to the Cognitive Unconscious (1980), excerpt candidate* Verification Status: Unverified — exact wording/source has not yet been independently confirmed against a primary source; source clue: Jokes and their Relation to the Cognitive Unconscious (1980), excerpt candidate.