Contextualism, Skepticism, and the Gettier Problem

The contextualist epistemological theories proposed by David Lewis and othersoffer a view of knowledge which awards a central role to the contexts ofknowledge attributions. Such contexts are held to determine how strong anepistemic position must be in order to count as knowledge. Lewis has suggestedthat contextualism so construed can be used both to ward off the skeptic and tosolve the Gettier problem. A person knows P, he says, just in case her evidenceeliminates every possibility that not-P, where the domain of `every' is determinedby the context. Lewis provides a list of rules that can tell us, for a given context,which not-P possibilities must be eliminated and which can properly be ignored.But his account entails, counterintuitively, that knowledge can truly be attributedeven to a person in a Gettier situation provided only that the attributor is ignorantof the fact that the person is gettiered. It has been criticized on those grounds byS. Cohen. In this paper I shall argue that most other forms of contextualism sufferthe same fate as Lewis's. The allies of contextualism haven't yet shown us whethercontextualism can succeed in maintaining a notion of ordinary knowledge whileresisting the absurdity that knowledge can be a matter of sheer good luck. At theend of the paper I shall suggest a possible solution to the problem by showing howCohen's line of criticism leads to a modified conception of what sort of justificationa belief must have to count as knowledge in ordinary contexts.     

External World Skepticism,Confidence and Psychologism about the Problem of Priors

In this paper, I will distinguish two varieties of external world skepticism: belief and confidence skepticism. I will argue that we can defang the intuitive motivations for confidence skepticism (though not a meeker “argument from might,” which got some attention in the twentieth century literature on external world skepticism) by adopting a partially psychologistic answer to the problem of priors. And I will argue that certain recent work in the epistemology of mathematics and logic provides independent support for such psychologism.     

On the Ternary Relation and Conditionality

One of the most dominant approaches to semantics for relevant (and many paraconsistent) logics is the Routley?CMeyer semantics involving a ternary relation on points. To some (many?), this ternary relation has seemed like a technical trick devoid of an intuitively appealing philosophical story that connects it up with conditionality in general. In this paper, we respond to this worry by providing three different philosophical accounts of the ternary relation that correspond to three conceptions of conditionality. We close by briefly discussing a general conception of conditionality that may unify the three given conceptions.     

Dao and Skepticism

The Zhuangzi raises skeptical problems it does not solve. At best, it asserts that solutions are unnecessary but does not prove it. This is not a fault of the text or its author; it is the logical consequence of the arguments themselves. Philosophically speaking, The Zhuangzi raises doubts, nothing more. Whether this is a good thing or a bad thing, and what we are supposed to do about it, is something we are left to decide for ourselves.     

Skepticism and Cryptography

Cryptography is an essential component of America’s national security infrastructure. Billions of dollars are spent on cryptosystems every year, in both the public and private sector. Unfortunately, the field is rife with dubious claims, snake oil salesmen, and outright fraud. This paper highlights the importance of skepticism and critical thinking in the role of evaluating and procuring cryptosystems. We discuss our experiences in teaching future leaders about testing extraordinary cryptographic claims by asking hard questions and show examples from our own experience. We believe that the rigorous application of skepticism and critical thinking in cryptography are absolutely essential to the wise use of America’s resources and the security of the nation.

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...     

Skepticism and legal interpretation

For comments and suggestions on earlier drafts of this article, I would like to thank Kendall Walton, Edward Averill, Marcia Baron, Richard Brandt, and Walter Schaller. This paper was first developed while in residence as a visiting scholar at the University of Michigan in Ann Arbor. I wish to thank both that institution for making its resources available to me during the 1986–87 academic year, and my home institution for granting me the Developmental Leave that permitted me to pursue my research. Finally, I wish to thank Thomas W. Pogge for helping me to make several substantive clarifications in the final version of this paper.     

Skepticism and Epistemic Logic

This essay attempts to implement epistemic logic through a non-classical inference relation. Given that relation, an account of '(the individual) a knows that A' is constructed as an unfamiliar non-normal modal logic. One advantage to this approach is a new analysis of the skeptical argument.