unless 're going sort embrace real metaphysics skeptic live life mean fun want want sort sort conventional way living thinking also understanding criteria um ride beyond radical skepticism think something 're proposing yeah 's 'm proposing perform think good reason skeptic give take seriously propositional contradiction take seriously performative contradiction propositional contradiction 's contradiction two propositions performative contradiction 's contradiction propositions assert behavior whether 's reflective behavior practical behavior privilege like privilege pay attention think whitehead right take performative contradiction seriously james made argument william james seriously propositional contradiction burden proof skeptic care first second pointed even pyro even pyro could n't live kind complete skepticism even though extremely virtuous man yeah 's 's 's interesting point 's 's great point uh hope one day get talk spinoz context performatively showing atheism could done virtuously 's 's 's interesting point yeah 're going reject propositional contradiction also reject perform contradiction yeah 's well taken especially think 've argued elsewhere even series propositional knowing yes relations propositional knowing procedural perspectival participatory