How are justified belief and rational belief related? Some philosophers think that justified belief and rational belief come to the same thing. Others take it that justification is a matter of how well a particular belief is supported by the evidence, while rational belief is a matter of how well a belief coheres with a person’s other beliefs. In this paper, I defend the view that justification is a dimension of rationality, a view that can make sense of both of (...) these conflicting accounts. When it modifies belief, ‘rational’ is a multidimensional adjective, as there are multiple dimensions along which a belief can be rational. I will argue that one of these dimensions is justification, an account that can not only explain why philosophers give diverging theories of the relationship between justified belief and rational belief, but can also reveal why rational belief and justified belief are closely related despite being distinct. (shrink)

Susanna Rinard aims to show that it is possible to rationally persuade an external world skeptic to reject external world skepticism. She offers an argument meant to convince a skeptic who accepts her views on “several orthogonal issues in epistemology” to give up their external world skepticism. While I agree with Rinard that it is possible to reason with a skeptic, I argue that Rinard overlooks a variety of good epistemic grounds a skeptic could appeal to in rejecting her argument (...) and its conclusion. More specifically, I argue that the external world skeptic can resist Rinard’s conclusion by (1) distinguishing between skepticism about knowledge and skepticism about justification, (2) by prioritizing obtaining accurate beliefs (maximizing true beliefs and minimizing false beliefs) over being rational, or (3) by treating suspension of judgment as the default rational doxastic attitude. (shrink)

In this paper, I explore how the ideal rationality-based account of propositional justification impacts our understanding of the relation between propositional and doxastic justification. The ideal rationality-based account sits uncomfortably with the widely accepted claim that propositional justification is necessary for doxastic justification. In particular, the combination of the necessity claim and the ideal rationality-based account of propositional justification entails that some plausible doxastic attitudes are doxastically unjustified and thereby severs epistemic justification from connections with epistemic responsibility and the competent (...) formation of beliefs. Thus, those who endorse both the necessity claim and the ideal rationality-based account of propositional justification will be forced to give up either their account of propositional justification or the necessity claim. I argue that there is good reason to give up the ideal rationality-based account of propositional justification instead of the necessity claim. This result indicates that an adequate account of propositional justification should be sensitive to the agent’s cognitive capacities. If propositional justification should be understood in this way, then the widely accepted explanation of doxastic justification in terms of propositional justification is not promising either. This is because an agent’s cognitive capacities and limitations play a prominent role in understanding propositional justification. Instead, I argue that, at the explanatory level, propositional justification relies on doxastic justification. (shrink)