Performative contradiction are performative contradictions in this context. Habermas claims that post-modernism's epistemological relativism suffers from a performative contradiction. Hans-Hermann Hoppe claims in his theory of argumentation ethics that arguing for any political position other than free-market anarchism results in a performative contradiction. Jaakko Hintikka more rigorously fleshed out the notion of performative contradiction in analyzing Descartes' famous "cogito ergo sum" argument, concluding that "cogito ergo sum" relies on performance rather than logical inference. Performative contradiction A performative contradiction () arises when the propositional content of a statement contradicts the presuppositions of asserting it. An example of a performative contradiction is the
Mr. Cogito Departure"). Two Cogito-related texts may be found there. The first one, dedicated to Władysław Walczykiewicz, is entitled "From Mr. Cogito on the Set Topic: Friends Depart" and bears the weight of nostalgic memories of the old times and companions gone. The second poem – "The Calendars of Mr. Cogito" – has a similar atmosphere. Written for Zbigniew Zapasiewicz, it mentions the feelings accompanying Mr. Cogito, who flicks through his old pocket calendars and finds the forgotten names and notes, covered with the mist of time. "Epilogue of the Storm" was released in 1998 and happened to be the last poetry