Theory, Knowledge and Science Commons^™

Assertion And Its Many Norms, John N. Williams

Research Collection School of Social Sciences

Timothy Williamson offers the ordinary practice, the lottery and the Moorean argument for the ‘knowledge account’ that assertion is the only speech-act that is governed by the single ‘knowledge rule’ or norm, that one must know its content. I show that the emptiness of the knowledge account renders mysterious why breaking the knowledge rule should be a source of criticism. I then argue that focussing exclusively on the sincerity of the speech-act of letting one know engenders a category mistake about the nature of constraints on assertion. For Williamson and those in his tradition, assertion alls under purely epistemic norms. …