According to a widely shared generic conception of inferential justification-'the standard conception'-an agent is inferentially justified in believing that p only if she has antecedently justified beliefs in all the non-redundant premises of a good argument for p. This conception tends to serve as the starting-point in contemporary debates about the nature and scope of inferential justification: as neutral common ground between various competing, more specific, conceptions. But it's a deeply problematic starting-point. This paper explores three questions that haven't been given the attention they deserve, that complicate the application of the standard conception to cases, and that reveal it to be underspecified at the core-in ways that aren't resolved but inherited by more specific (extant) versions of it. The goal isn't to answer the questions, but to articulate them, explain what turns on them, and invite a critical re-examination of the standard conception.
Keywords Epistemology • Inferential justification • Logical form • Argument • Inference[K]nowledge and justification are inferentially transmissible only if the underlying argument is good. If we start with false or unjustified premises or we unreasonably infer a conclusion from them (i.e. infer it invalidly or in an inductively inadmissible way) it's not to be expected that a belief based on the argument in question constitutes knowledge or is even justified. (Audi 2011, 199.) On a widely shared generic conception of inferential justification-henceforth 'the standard conception'-an agent is inferentially justified in believing that p only if she has antecedently justified beliefs in all the non-redundant premises of a good argument for p. This paper explores three questions that haven't been given the attention they deserve, that complicate the application of the standard conception to cases, and that reveal it to be underspecified at the core-in ways not resolved, but inherited, by more B Anna-Sara Malmgren