Pharmacological cognitive enhancements nontherapeutically improve cognitive functioning, though recent critics have challenged their use by claiming that cognitive success, aided by the use of cognitive enhancement, is less valuable than otherwise. We criticize two recent responses to this objection, due to Carter and Pritchard and Wang, and propose a different response on behalf of proponents of cognitive enhancement that is shown to be more promising.

Knowledge defeat occurs when a subject knows that _p_, gains a defeater for her belief, and thereby loses her knowledge without necessarily losing her belief. It’s far from obvious that externalists can accommodate putative cases of knowledge defeat since a belief that satisfies the externalist conditions for knowledge can satisfy those conditions even if the subject later gains a defeater for her belief. I’ll argue that virtue reliabilists can accommodate defeat intuitions via a new kind of error theory. I argue (...) that in cases where the subject holds dogmatically onto her belief in the face of an apparent defeater, her belief never qualified as knowledge, since the belief was not gained via an exercise of her epistemic virtues. In cases where the subject suspends her judgment upon receiving the putative defeater her original belief might have qualified as knowledge, but crucially, in such cases knowledge is lost due to loss of belief, rather than due to the epistemic force of the defeater. Therefore, knowledge defeat isn’t a genuine phenomenon even though there are no cases where a subject knows what she originally believed after receiving the putative defeater. (shrink)

Philosophy and Phenomenological Research, EarlyView.

Norman forms the belief that the president is in New York by way of a clairvoyance faculty he doesn’t know he has. Many agree that his belief is unjustified but disagree about why it is unjustified. I argue that the lack of justification cannot be explained by a higher-level evidence requirement on justification, but it can be explained by a no-defeater requirement. I then explain how you can use cognitive faculties you don’t know you have. Lastly, I use lessons from (...) the foregoing to compare Norman’s belief, formed by clairvoyance, with Sally’s theistic belief, formed by a sensus divinitatis. (shrink)

The Hypothesis of Extended Cognition holds that the mind need not be constrained within biological boundaries. However, conditions must be provided to set a principled outer limit on cognitive extension, or implausibly many cases will be implicated. I argue that, for the case of extended beliefs at least, such conditions must pay attention to a mental state's causal history, in addition to its current functional poise. Extended resources can house an individual's beliefs, I propose, only if she has taken responsibility (...) for their sources in a suitable way. (shrink)

A belief is reflectively lucky if it is a matter of luck that the belief is true, given what a subject is aware of on reflection alone. Various epistemologists have argued that any adequate theory of knowledge should eliminate reflective luck, but doing so has proven difficult. This article distinguishes between two kinds of reflective luck arguments in the literature: local arguments and global arguments. It argues that local arguments are best interpreted as demanding, not that one be reflectively aware (...) of the reliability of the sources of one’s beliefs, but that one’s beliefs be attributable to one as one’s own. The article then argues that global arguments make illegitimate demands, because they require that we be ultimately answerable for our beliefs. In the end, the article argues that epistemologists should shift their focus away from reflective luck and toward the conditions under which beliefs are attributable to cognitive agents. (shrink)

In this paper, I defend the claim, made by G. E. M. Anscombe and J. L. Austin, that you can insult someone by refusing her testimony. I argue that refusing someone’s testimony can manifest doubt about her credibility, which in the relevant cases is offensive to her, given that she presupposed her credibility by telling what she did. I conclude by sketching three applications of my conclusion: to the issue of valuable false belief, to the issue of testimonial injustice, and (...) to the issue of skepticism about testimonial knowledge. (shrink)

Credit theories of knowledge have to explain the conditions under which beliefs are attributable to cognitive agents. The most promising way to explain these conditions is to offer an account of cognitive agency that is a plausible development of the uncontroversial notion that we are believing subjects. This article develops and defends a Structuralist model of cognitive agency.

Some of the most well-known arguments against epistemic externalism come in the form of thought experiments involving subjects who acquire beliefs through anomolous means such as clairvoyance. These thought experiments purport to provide counterexamples to the reliabilist conception of justification: their subjects are intuitively epistemically unjustified, yet meet reliabilist externalist criteria for justification. In this article, I address a recent defence of externalism due to Daniel Breyer, who argues that externalists need not consider such subjects justified, since they fail to (...) own those beliefs in a way required for epistemic evaluability. I argue that the concept of belief ownership Breyer adopts leaves his account open to related counterexamples, and suggest a modification, drawing on analogies between these cases and cases of delusions, such as thought insertion. I will argue that a concept of authorship developed in the literature on delusions better grounds the sense of attribution required for epistemic evaluability. (shrink)

Does inferential justification require the subject to be aware that her premises support her conclusion? Externalists tend to answer “no” and internalists tend to answer “yes”. In fact, internalists often hold the strong higher-level requirement that an argument justifies its conclusion only if the subject justifiably believes that her premises support her conclusion. I argue for a middle ground. Against most externalists, I argue that inferential justification requires that one be aware that her premises support her conclusion. Against many internalists, (...) I argue that this higher-level awareness needn’t be doxastic or justified. I also argue that the required higher-level awareness needn’t be caused in some appropriate way, e.g. by a reliable or properly functioning faculty. I suspect that this weaker higher-level requirement is overlooked because, at first glance, it seems absurd to allow nondoxastic, unjustified, and unreliably-caused higher-level awareness to contribute to inferential justification. One of the central goals of this paper is to explain how such weak awareness can make an essential contribution to inferential justification. (shrink)

According to credit theories of knowledge, S knows that p only if S deserves credit for truly believing that p. This article argues that any adequate credit theory has to explain the conditions under which beliefs are attributable to subjects. It then presents a general account of these conditions and defends two models of cognitive agency. Finally, the article explains how an agent-based approach rescues the credit theory from an apparent counterexample. The article's defense of the credit theory is qualified, (...) however, for one lesson that emerges is that credit theories are theories of subjective justification, not theories of knowledge. (shrink)

In chapter 4 of Autonomous Knowledge: Radical Enhancement, Autonomy and the Future of Knowing (OUP, 2021), Carter takes on the question of whether there is an epistemic autonomy condition on know-how, e.g. one that might rule out cases of radical performance enhancement as genuine cases of know-how. In this paper, I examine Carter’s proposal and identify an asymmetry in the way his epistemic autonomy condition is applied to enhanced and non-enhanced instances of know-how. In particular, it seems that either an (...) autonomy condition is required for all forms of knowledge-how or it is not. If it is, then a potential worry is that young children do not manifest their know-how when doing things that we would normally be inclined to say they know how to do. If it is not, then young children do manifest some forms of non-enhanced know-how. While Carter chooses the second option, I argue that it is better to choose the first one, that is, to claim that all know-how needs to be epistemically autonomous along the lines he has described. I also show how this does not exclude young children from knowing how to do things. (shrink)