Concessive knowledge-attributions: fallibilism and gradualism

Any knowledge-fallibilist needs to solve the conceptual problem posed by concessive knowledge-attributions (such as ‘I know that p, but possibly not-p’). These seem to challenge the coherence of knowledge-fallibilism. This paper defuses that challenge via a gradualist refinement of what Fantl and McGrath (2009) call weak epistemic fallibilism.