Schaffer, Jonathan2015-12-070031-8116http://hdl.handle.net/1885/18962How should the contrastivist formulate closure? That is, given that knowledge is a ternary contrastive state Kspq (s knows that p rather than q), how does this state extend under entailment? In what follows, I will identify adequacy conditions for closure, criticize the extant invariantist and contextualist closure schemas, and provide a contrastive schema based on the idea of extending answers. I will conclude that only the contrastivist can adequately formulate closure.Closure, Contrast, and Answer200710.1007/s11098-005-4545-x2015-12-07