Christoph Kelp

This paper highlights some connections between work on truth approximation and work in social epistemology, in particular work on peer disagreement. In some of the literature on truth approximation, questions have been addressed concerning the efficiency of research strategies for approximating the truth. So far, social aspects of research strategies have not received any attention in this context. Recent findings in the field of opinion dynamics suggest that this is a mistake. How scientists exchange and take into account information about each others’ beliefs may greatly influence the accuracy and speed with which the scientific community as a whole approximates the truth. On the other hand, social epistemologists concerned with peer disagreement have so far neglected the question of how practices of responding to disagreements with peers fare with respect to the goal of approximating the truth. Again, work on opinion dynamics shows that this may be a mistake, and that how we ought to respond to disagreements with our peers may depend on the specific purposes of our investigations.

The investigation of epistemic virtues, such as curiosity, open-mindedness, intellectual courage and intellectual humility is a growing trend in epistemology. An underexplored question in this context is: what is the relationship between these virtues and other types of virtue, such as moral or prudential virtue? This paper argues that, although there is an intuitive sense in which virtues such as intellectual courage and open-mindedness have something to do with the epistemic domain, on closer inspection it is not clear to what extent they should be understood as genuine epistemic virtues. We draw a distinction between epistemic virtues and virtues with epistemic content and provide reason to believe that the aforementioned virtues are moral virtues with epistemic content rather than bona fide epistemic virtues. The upshot is that there are far fewer epistemic virtues out there than commonly assumed.

Two different versions of epistemological disjunctivism have recently been upheld in the literature: a traditional, Justified True Belief Epistemological Disjunctivism (JTBED) and a Knowledge First Epistemological Disjunctivism (KFED). JTBED holds that factive reasons of the form “S sees that p” provide the rational support in virtue of which one has perceptual knowledge, while KFED holds that factive reasons of the form “S sees that p” just are ways of knowing that p which additionally provide justification for believing that p. We argue that both accounts remain ultimately unsatisfactory. JTBED faces two formidable problems: first, it cannot account for animal knowledge, and, second, it does not offer a satisfactory account of how we access factive reasons. Although KFED can solve these two problems, it has some problems of its own. While intuitively knowledge is logically stronger than justified belief, on KFED it turns out to be weaker: knowledge does not entail justified belief, but justified belief does entail knowledge. Nevertheless, disjunctivists are right on at least a couple of points: we standardly justify our perceptual beliefs by appealing to factive reasons such as seeing that p and so factive reasons ought to play some role in our theory of justification. In addition, KFED’s account of our access to factive reasons also is spot on. Rather than going disjunctivist, these insights can be suitably incorporated into a Knowledge First Virtue Epistemology (KFVE).

Traditionally, epistemologists have held that only truth-related factors matter in the question of whether a subject can be said to know a proposition. Various philosophers have recently departed from this doctrine by claiming that the answer to this question also depends on practical concerns. They take this move to be warranted by the fact that people’s knowledge attributions appear sensitive to contextual variation, in particular variation due to differing stakes. This paper proposes an alternative explanation of the aforementioned fact, one that allows us to stick to the orthodoxy. The alternative applies the conceptual spaces approach to the concept of knowledge. With knowledge conceived of spatially, the variability in knowledge attributions follows from recent work on identity, according to which our standards for judging things (including concepts) to be identical are context-dependent. On the proposal to be made, it depends on what is at stake in a context whether it is worth distinguishing between knowing and being at least close to knowing

Two important philosophical questions about assertion concern its nature and normativity. This article defends the optimism about the constitutive norm account of assertion and sets out a constitutivity thesis that is much more modest than that proposed by Timothy Williamson. It starts by looking at the extant objections to Williamson’s Knowledge Account of Assertion and argues that they fail to hit their target in virtue of imposing implausible conditions on engaging in norm-constituted activities. Second, it makes a similar proposal and shows how it does better than the competition. It suggests that Knowledge Norm of Assertion is not constitutive of the speech act of assertion in the same way in which rules of games are constitutive, and thus KAA comes out as too strong. The final section embarks on a rescue mission on behalf of KAA; it puts forth a weaker, functionalist constitutivity thesis. On this view, KNA is etiologically constitutively associated with the speech act of assertion, in virtue of its function of generating knowledge in hearers.

A common presupposition in epistemology is that the processes contributing to the generation of knowledge do not extend beyond the knower's skin. This paper challenges this presupposition. I adduce a novel kind case that causes trouble for a number of even the most promising accounts of knowledge in current literature, at least so long as the presupposition is in place. I then look at a couple of recent accounts of knowledge that drop the presupposition and expressly allow the relevant processes to extended beyond the knower's skin. While these accounts can handle the problem case, they encounter difficulties elsewhere: extension occurs too easily and so the accounts predict knowledge where they ought not. Finally, I offer a novel way of extending epistemology and argue that it can steer clear of the problems on both sides.

Duncan Pritchard has recently argued against robust virtue epistemology on the grounds that it gets caught up in a fatal double bind: There is a type of case suggesting that the central robust virtue theoretic condition on knowledge is too strong to be necessary for knowledge as well as a type of case suggesting that it is too weak to be sufficient for knowledge. He does concede to the robust virtue epistemologist that his argument will be fully convincing only if it really is a double bind the view gets caught up in, i.e. if robust virtue epistemology faces both types of case. This paper shows that Pritchard’s argument fails to fulfil its promise. I consider the two major ways of interpreting the virtue theoretic condition and argue that while it is plausible that for each interpretation of this condition one problematic type of case arises, for neither interpretation both problematic types of case arise. In consequence, by his own lights, Pritchard’s argument turns out unconvincing.

This paper critically assesses Sosa’s normative framework for performances as well as its application to epistemology. We first develop a problem for one of Sosa’s central theses in the general theory of performance normativity according to which performances attain fully desirable status if and only if they are fully apt. More specifically, we argue that given Sosa’s account of full aptness according to which a performance is fully apt only if safe from failure, this thesis can’t be true. We then embark on a rescue mission on behalf of Sosa and work towards a weakened account of full aptness. The key idea is to countenance a distinction between negligible and non-negligible types of risk and to develop an account of full aptness according to which even performances that are endangered by risk can be fully apt, so long as the risk is of a negligible type. While this alternative account of full aptness solves the problem we developed for Sosa earlier on, there is also bad news for Sosa. When applied to epistemology, the envisaged treatment of barn façade cases as cases in which the agent falls short of fully apt belief will no longer work. We show that, as a result, Sosa faces a new version of a familiar dilemma for virtue epistemology. Either he construes full aptness as strong enough to get barn façade cases right in which case his view will run right into the problem we develop. Or else he construes full aptness as weak enough to avoid this problem but then he will not be able to deal with barn façade cases in the way envisaged.

In a number of recent pieces, Duncan Pritchard has used cases with the structure of Goldman’s infamous fake barn case to argue against a promising virtue epistemological account of knowledge and a promising knowledge-based account of understanding. This paper aims to defend both of these views against Pritchard’s objections. More specifically, I outline two ways of resisting Pritchard’s objections. The first allows for knowledge in fake barn cases and explains the intuition of ignorance away. In contrast, the second response appeals to a plausible alternative account of understanding. Each of the resulting views is shown to be epistemologically viable and preferable to the alternative Pritchard’s offers.

This paper develops an account of trustworthy AI. Its central idea is that whether AIs are trustworthy is a matter of whether they live up to their function-based obligations. We argue that this account serves to advance the literature in a couple of important ways. First, it serves to provide a rationale for why a range of properties that are widely assumed in the scientific literature, as well as in policy, to be required of trustworthy AI, such as safety, justice, and explainability, are properties (often) instantiated by trustworthy AI. Second, we connect the discussion on trustworthy AI in policy, industry, and the sciences with the philosophical discussion of trustworthiness. We argue that extant accounts of trustworthiness in the philosophy literature cannot make proper sense of trustworthy AI and that our account compares favourably with its competitors on this front.

While fallibilism has been the dominant view in epistemology in recent times, the field has witnessed the rise of a new form of infallibilism. In a recent book, Jessica Brown has taken on the task of mounting a systematic defence of fallibilism against this new infallibilism. She argues that new infallibilism incurs several problematic commitments that fallibilism can avoid. In addition, the key data points that infallibilists have adduced in support of their view can be accommodated by fallibilism, giving fallibilism the upper hand. This paper develops a rejoinder on behalf of new infallibilism. It explores ways in which new infallibilists can avoid the problematic commitments Brown identifies and provides reason to think that some of the data points supporting new infallibilism cannot be as readily handled by fallibilism as Brown would have us think.

This thesis addresses the problem of the analysis of knowledge. The persistent failure of analyses of knowledge in terms of necessary and sufficient conditions is used to motivate exploring alternative approaches to the analytical problem. In parallel to a similar development in the theory of truth, in which the persistent failure to provide a satisfactory answer to the question as to what the nature of truth is has led to the exploration of deflationary and minimalist approaches to the theory of truth, the prospects for deflationary and minimalist approaches to the theory of knowledge are investigated. While it is argued that deflationary approaches are ultimately unsatisfactory, a minimalist approach to epistemology, which characterises the concept of knowledge by a set of platitudes about knowledge, is defended. The first version of a minimalist framework for the theory of knowledge is developed. Two more substantive developments of the minimalist framework are discussed. In the first development a safety condition on knowledge is derived from the minimalist framework. Problems for this development are discussed and solved. In the second development, an ability condition is derived from the minimalist framework. Reason is provided to believe that, arguably, the ability condition can avoid the problems that beset traditional analyses of knowledge. It is also shown that even if this argument fails, minimalist approaches to epistemology may serve to provide a functional definition of knowledge. Reason is thus provided to believe that minimalist approaches to epistemology can make progress towards addressing the problem of the analysis of knowledge

According to the achievement account of the value of knowledge, knowledge is finally valuable because it is a species of a finally valuable genus, achievement. The achievement account is said to solve Pritchard's tertiary value problem, the problem of showing that knowledge enjoys a different kind of value than mere true belief. This paper argues, first, that AA fails to solve TVP, and, second, that Pritchard's motivations for TVP are inadequate. They do, however, motivate a weaker value problem, one that can be solved by showing that knowledge is weakly superior to mere true belief. Finally, third, we argue that knowledge does enjoy this form of weak superiority. Since this argument rests on AA's key species-genus claim, AA can retain the upper hand in the debate.

Virtue epistemological accounts of knowledge claim that knowledge is a species of a broader normative category, to wit of success from ability. Fake Barn cases pose a difficult problem for such accounts. In structurally analogous but non-epistemic cases, the agents attain the relevant success from ability. If knowledge is just another form of success from ability, the pressure is on to treat Fake Barn cases as cases of knowledge. The challenge virtue epistemology faces is to explain the intuitive lack of knowledge in Fake Barn cases, whilst holding on to the core claim that knowledge is success from ability. Ernest Sosa's version of virtue epistemology promises to rise to this challenge. Sosa distinguishes two types of knowledge, animal knowledge and reflective knowledge. He argues that while animal knowledge is present in Fake Barn cases, reflective knowledge is absent and ventures to explain the intuition of ignorance by the absence of reflective knowledge. This paper argues that Sosa's treatment of Fake Barn cases fails as it commits Sosa to a number of highly counterintuitive results elsewhere in epistemology.

This paper develops a novel, bifocal account of trustworthiness according to which both trustworthinesssimpliciter(as in ‘Ann is trustworthy’) and trustworthiness tophi(as in ‘Ann is trustworthy when it comes to keeping your secrets’) are analysed in terms of dispositions to fulfil one's obligations. We also offer a systematic account of the relation between the two types of trustworthiness, an account of degrees of trustworthiness and comparative trustworthiness, as well as a view of permissible trustworthiness attribution.

Virtue epistemology is one of the most flourishing research programmes in contemporary epistemology. Its defining thesis is that properties of agents and groups are the primary focus of epistemic theorising. Within virtue epistemology two key strands can be distinguished: virtue reliabilism, which focuses on agent properties that are strongly truth-conducive, such as perceptual and inferential abilities of agents; and virtue responsibilism, which focuses on intellectual virtues in the sense of character traits of agents, such as open-mindedness and intellectual courage. This volume brings together ten new essays on virtue epistemology, with contributions to both of its key strands, written by leading authors in the field. It will advance the state of the art and provide readers with a valuable overview of what virtue epistemology has achieved.