Online research in philosophy

A number of epistemologists have defended a necessary condition for knowledge that has come to be labeled as the “safety” condition. Timothy Williamson, Duncan Pritchard, and Ernest Sosa are the foremost defenders of safety. According to these authors an agent S knows a true proposition P only if S could not easily have falsely believed P. Disagreement arises, however, with respect to how they capture the notion of a safe belief.

This article is a treatment of the different presentations and defenses of the safety condition for knowledge. Special attention is first paid to an elucidation of the various aspects or features of the safety condition. Following a short demonstration of the manner in which the safety condition handles some rather tough Gettier-like cases in the literature, some problems facing safety conclude this article.

This paper surveys attempts in the recent literature to offer a modal condition on knowledge as a way of resolving the problem of scepticism. In particular, safety-based and sensitivity-based theories of knowledge are considered in detail, along with the anti-sceptical prospects of an explicitly anti-luck epistemology.

That believing truly as a matter of luck does not generally constitute knowing has become epistemic commonplace. Accounts of knowledge incorporating this anti-luck idea frequently rely on one or another of a safety or sensitivity condition. Sensitivity-based accounts of knowledge have a well-known problem with necessary truths, to wit, that any believed necessary truth trivially counts as knowledge on such accounts. In this paper, we argue that safety-based accounts similarly trivialize knowledge of necessary truths and that two ways of responding to this problem for safety, issuing from work by Williamson and Pritchard, are of dubious success.

Duncan Pritchard’s book (Epistemic Luck, Oxford University Press, 2005) concerns the interplay between two disturbing kinds of epistemic luck, termed “reflective” and “veritic,” and two types of arguments for skepticism, one based on a closure principle for knowledge and the other on an underdetermination thesis about the quality of our evidence for the everyday propositions we believe. Pritchard defends the view that a safety-based account of knowledge can answer the closure argument and provide an account of how veritic epistemic luck is eliminated. He also argues that reflective epistemic luck cannot be eliminated, and that even though it is the sort of luck with which the underdetermination argument is concerned, the fact that this type of luck cannot be eliminated doesn’t undermine knowledge. Instead, it undermines the assertibility of our knowledge, at least in skeptical contexts. So when the skeptic challenges the idea that we know using the underdetermination principle, we have no legitimate response to offer, and it is this fundamental fact of epistemic life that Pritchard terms our inevitable epistemic angst.

This paper explores the prospects for safety-based theories of knowledge in the light of some recent objections.

This essay extends my side of a discussion begun earlier with Duncan Pritchard, the recent author of Epistemic Luck.Pritchard’s work contributes significantly to improving the “diagnostic appeal” of a neo-Moorean philosophical response to radical scepticism. While agreeing with Pritchard in many respects, the paper questions the need for his concession to the sceptic that the neo-Moorean is capable at best of recovering “‘brute’ externalist knowledge”. The paper discusses and directly responds to a dilemma that Pritchard poses for virtue epistemologies (VE). It also takes issue with Pritchard’s “merely safety-based” alternative. Ultimately, however, the criticisms made here of Pritchard’s dilemma and its underlying contrast of “anti-luck” and “virtue” epistemologies are intended to help realize his own aspirations for a better diagnosis of radical scepticism to inform a still better neo-Moorean response.

There is some consensus that for S to know that p, it cannot be merely a matter of luck that S’s belief that p is true. This consideration has led Duncan Pritchard and others to propose a safety condition on knowledge. In this paper, we argue that the safety condition is not a proper formulation of the intuition that knowledge excludes luck. We suggest an alternative proposal in the same spirit as safety, and find it lacking as well.

Duncan Pritchard has, in the years following his (2005) defence of a safety-based account of knowledge in Epistemic Luck, abjured his (2005) view that knowledge can be analysed exclusively in terms of a modal safety condition. He has since (2007; 2009; 2010) opted for an account according to which two distinct conditions function with equal importance and weight within an analysis of knowledge: an anti-luck condition (safety) and an ability condition-the latter being a condition aimed at preserving what Pritchard now takes to be a fundamental insight about knowledge: that it arises from cognitive ability (Greco (2010); Sosa (2007; 2009). Pritchard calls his new view anti-luck virtue epistemology (ALVE). A key premise in Pritchard’s argument for ALVE is what I call the independence thesis; thethesis that satisfying neither the anti-luck condition nor the ability condition entails that the other is satisfied. Pritchard’s argument for the independence thesis relies crucially upon the case he makes for thinking that cognitive achievements are compatible with knowledge-undermining environmental luck–that is, the sort of luck widely thought to undermine knowledge in standard barn facade cases. In the first part of this paper, I outline the key steps in Pritchard’s argument for anti-luck virtue epistemology and highlight how it is that the compatibility of cognitive achievement and knowledgeundermining environmental luck is indispensible to the argument’s success. The second part of this paper aims to show that this compatibility premise crucial to Pritchard’s argument is incorrect.

There is some consensus that for S to know that p, it cannot be merely a matter of luck that S's belief that p is true. This consideration has led Duncan Pritchard and others to propose a safety condition on knowledge. In this paper, we argue that the safety condition is not a proper formulation of the intuition that knowledge excludes luck. We suggest an alternative proposal in the same spirit as safety, and find it lacking as well.

The safety analysis of knowledge, due to Duncan Pritchard, has it that for all contingent propositions, p, S knows that p iff S believes that p, p is true, and (the “safety principle”) in most nearby worlds in which S forms his belief in the same way as in the actual world, S believes that p only if p is true. Among the other virtues claimed by Pritchard for this view is its supposed ability to solve a version of the lottery puzzle. In this paper, I argue that the safety analysis of knowledge in fact fails to solve the lottery puzzle. I also argue that a revised version of the safety principle recently put forward by Pritchard fares no better.