Performative contradiction

A performative contradiction (German: performativer Widerspruch) arises when the making of an utterance rests on necessary presuppositions that contradict the proposition asserted in the utterance. The term was coined by Jürgen Habermas and Karl-Otto Apel, who attribute the first elaboration of the concept to Jaakko Hintikka, in his analysis of Descartes' cogito ergo sum argument.