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
Ergo Proxy two DVD box collection on September 25, 2012 and August 22, 2012 respectively. In Australia and New Zealand, the "Ergo Proxy" DVDs were distributed by Madman Entertainment, the first volume released in March 2007. The first volume of "Ergo Proxy" was released in the UK by MVM Films on August 6, 2007. The English dub of "Ergo Proxy" aired on ABC2 (the national digital public television channel) from July 3, 2007 to December 4, 2007. In Canada, the English dub aired as part of Anime Current, an Anime Television block, on pay-TV digital channel G4 Canada from July 26, 2007