Skepticism and justification

Synthese - This paper discusses the skeptical argument presented by Keith Lehrer in his paper ‘Why Not Scepticism?’. It is argued that Lehrer's argument depends on unacceptable...     

Discursive justification and skepticism

In this paper, I consider how a general epistemic norm of action that I have proposed in earlier work should be specified in order to govern certain types of acts: assertive speech acts. More specifically, I argue that the epistemic norm of assertion is structurally similar to the epistemic norm of action. First, I argue that the notion of warrant operative in the epistemic norm of a central type of assertion is an internalist one that I call ??discursive justification.?? This type of warrant is internalist insofar as it requires that the agent is capable of articulating reasons for her belief. The idea, roughly, is that when one asserts that p, one is supposed to be in a position to give reasons for believing that p. Bonjour??s reliable clairvoyant Norman, for example, is not in an epistemic position to make assertions regarding the president??s whereabouts??even if Norman knows the president??s whereabouts. In conclusion, I briefly consider whether a type of skeptical argument??often labeled Agrippa??s Trilemma??is motivated, at least in part, by the fact that responses to it violate the relevant epistemic norm of assertion.     

Infinitism and probabilistic justification

According to infinitism, beliefs can be justified by an infinite chain of reasons. So far, infinitism has rarely been taken seriously and often even dismissed as inconsistent. However, Peijnenburg and Atkinson have recently argued that beliefs can indeed be justified by an infinite chain of reasons, if justification is understood probabilistically. In the following, I will discuss the formal result that has led to this conclusion. I will then introduce three probabilistic explications of justification and examine to which extent they support Peijnenburg’s and Atkinson’s claim.     

Elusive epistemological justification

What does it take for some epistemological thinking to be epistemically justified? Indeed, is that outcome even possible? This paper argues that it is not possible: no epistemological thinking can ever be epistemically justified. A vicious infinite regress of epistemological reflection is the price that would have to be paid for having some such justification. Clearly, that price would be too high.     

Epistemic justification and epistemic luck

Among epistemologists, it is not uncommon to relate various forms of epistemic luck to the vexed debate between internalists and externalists. But there are many internalism/externalism debates in epistemology, and it is not always clear how these debates relate to each other. In the present paper I investigate the relation between epistemic luck and prominent internalist and externalist accounts of epistemic justification. I argue that the dichotomy between internalist and externalist concepts of justification can be characterized in terms of epistemic luck. Whereas externalist theories of justification are incompatible with veritic luck but not with reflective luck, the converse is true for internalist theories of justification. These results are found to explain and cohere with some recent findings from elsewhere in epistemology, and support a surprising picture of justification, on which internalism and externalism are complementary rather than contradictory positions.     

Epistemic justification and psychological realism

The main thesis of this paper is that it is not possible to determine the nature of epistemic justification apart from scientific psychological investigation. I call this view the strong thesis of methodological psychologism. Two sub-theses provide the primary support for this claim. The first sub-thesis is that no account of epistemic justification is correct which requires for the possession of at least one justified belief a psychological capacity which humans do not have. That is, the correct account of epistemic justification must be psychologically realistic. The second sub-thesis is that it is not possible to determine whether an account of epistemic justification is psychologically realistic apart from scientific psychological investigation. After defending these subtheses, I point out some interesting consequences of the overall thesis which present a challenge to traditional epistemology.