This paper draws a line of demarcation between fallibilism and infallibilism. Taking Cartesian Infallibilism as a guide, it advances a picture of infallibilism whereby infallible knowledge requires, among other conditions, luminosity of a truth-guaranteeing property. Some implications for contemporary theories of knowledge are explored.

In this paper I introduce a problem regarding whether there are good reasons to accept fallibilism about justified belief. According to this species of fallibilism, one can be justified in believing a proposition on the basis of reasons that do not justify certainty. Call such reasons “fallible reasons.” The problem is this: can one justifiably believe fallibilism on the basis of fallible reasons? To do so would seem to beg the question. If you are undecided as to whether you should (...) accept anything on the basis of fallible reasons, then you should also be undecided as to whether you should accept fallibilism on the basis of such reasons. In this paper I consider several possible responses to this problem. I argue that the most appealing is to grant that good but fallible reasons on behalf of fallibilism are possible, and that this shows that one’s basic rational commitments cannot be defended in a non-circular fashion. (shrink)

We are witnessing a certain tendency in epistemology to account for the anti-luck intuition in terms of risk. I.e., instead of the traditional anti-luck diagnosis of Gettier cases and fake barn cases, a new anti-risk diagnosis seems to be preferable by many. My goal in this paper is twofold: first, I contribute to motivate that drift; and second, I defend that we ought to partially resist it. An anti-risk diagnosis is valid and preferable for fake barn cases, but we still (...) need an anti-luck diagnosis for classic Gettier cases. The paper thus defends the Solomon-like result that we need both concepts—epistemic luck and epistemic risk—to deal with all the cases where knowledge is undermined. (shrink)

We are witnessing a certain tendency in epistemology to account for the anti-luck intuition in terms of risk. I.e., instead of the traditional anti-luck diagnosis of Gettier cases and fake barn cases, a new anti-risk diagnosis seems to be preferable by many. My goal in this paper is twofold: first, I contribute to motivate that drift; and second, I defend that we ought to partially resist it. An anti-risk diagnosis is valid and preferable for fake barn cases, but we still (...) need an anti-luck diagnosis for classic Gettier cases. The paper thus defends the Solomon-like result that we need both concepts—epistemic luck and epistemic risk—to deal with all the cases where knowledge is undermined. (shrink)

Do laypeople and philosophers differ in their attributions of knowledge? Starmans and Friedman maintain that laypeople differ from philosophers in taking ‘authentic evidence’ Gettier cases to be cases of knowledge. Their reply helpfully clarifies the distinction between ‘authentic evidence’ and ‘apparent evidence’. Using their sharpened presentation of this distinction, we contend that the argument of our original paper still stands.

Philosophy and Phenomenological Research, EarlyView.

This article addresses important epistemological issues raised by Barry Hallen and J. Olubi Sodipo’s pioneering philosophical fieldwork among Yoruba herbalists or masters of medicine (onisegun). More precisely, I shall primarily investigate, as well as object to, the unduly restrictive view they take on testimony in Yoruba epistemic practice. With this criticism as the starting point, but still based on the cases Hallen and Sodipo provide, I explore different ways in which an “oral culture” like Yoruba (as traditionally depicted) can rely (...) on testimony as a source of justification without succumbing to the gullible and uncritical attitude towards tradition such societies have been charged with. To this purpose, I put to use relevant developments in analytic epistemology taking place after Hallen and Sodipo published their work. (shrink)

This paper investigates some epistemic properties that distinguish understanding from knowledge. In particular, the focus is on how to spell out the notion of grasping the relationships between propositions that constitute objectual understanding: what kind of epistemic access is required for grasping to occur and to what extent is the act of grasping voluntary? A modest form of access is suggested as an answer to the first question and a largely negative answer to the second. The worry that my suggestion (...) is too permissive in crediting subjects with understanding is addressed. The results are then finally briefly contrasted to Ernest Sosa’s notion of knowing full well where one contrast precisely concerns the voluntary character of the respective epistemic states. (shrink)

Among the epistemological ideas commonly associated with the Descartes of the Meditations, at any rate, is a knowledge-infallibilism. Such an idea was seemingly a vital element in Descartes’s search for truth within that investigative setting: only a true belief gained infallibly could be knowledge, as the Meditations conceived of this. Contemporary epistemologists are less likely than Descartes was to advocate our ever seeking knowledge-infallibility, if only because most are doubtful as to its ever being available. Still, they would agree—in a (...) seemingly Cartesian spirit—that if infallible knowledge was available then it would be a stronger link to truth than fallible knowledge ever manages to be. But this paper argues that infallible knowledge lacks that supposed advantage over fallible knowledge. Indeed, we will see why we should move even further away from the epistemological model at the heart of the Meditations: we should adopt knowledge-minimalism, by conceiving of a belief’s being true as always sufficient for its being knowledge—this, for any belief. (shrink)

One of contemporary epistemology's more important conceptual challenges is that of understanding the nature of fallibility. Part of why this matters is that it would contribute to our understanding the natures of fallible warrant and fallible knowledge. This article evaluates two candidates – and describes a shared form of failing. Each is concealedly infallibilist. This failing is all-too-representative of the difficulty of doing justice to the notion of fallibility within the notions of fallible warrant and fallible knowledge. The article ends (...) with a proposal for an improved form of conception of fallible warrant and fallible knowledge. (shrink)

We may usefully distinguish between one’s having fallible knowledge and having a fallibilist stance on some of one’s knowledge. A fallibilist stance could include a concessive knowledge-attribution. But it might also include a questioning knowledge-attribution. Attending to the idea of a QKA leads to a distinction between what we may call closed knowledge that p and open knowledge that p. All of this moves us beyond Elgin’s classic tale of the epistemic capacities of Holmes and of Watson, and towards a (...) way of resolving Kripke’s puzzle about dogmatism and knowing. (shrink)

Two of the most orthodox ideas in epistemology are fallibilism and purism. According to the fallibilist, one can know that a particular claim is true even though one’s justification for that claim is less than fully conclusive. According to the purist, knowledge does not depend on practical factors. Fallibilism and purism are widely assumed to be compatible; in fact, the combination of these views has been called the ‘ho-hum,’ obvious, traditional view of knowledge. But I will argue that fallibilism and (...) purism are incompatible. The best explanation for fallibilism requires one to reject purism, while maintaining purism should lead one to reject fallibilism. It follows that the orthodox view of knowledge is deeply mistaken. (shrink)

In this paper, I defend an epistemic requirement on fitting hopes and worries: it is fitting to hope or to worry that p only if one’s epistemic position makes it rational to suspend judgment as to whether p. This view, unlike prominent alternatives, is ecumenical; it retains its plausibility against a variety of different background views of epistemology. It also has other important theoretical virtues: it is illuminating, elegant, and extensionally adequate. Fallibilists about knowledge have special reason to be friendly (...) to my view; it can help them explain why it can be unfitting to hold on to hope and worry in the face of overwhelming evidence, and it can also help them explain the sense in which knowledge that p and hope that –p are in tension with one another. (shrink)

This article revisits Karl Popper’s falsificationist methodology with respect to three tasks. The first is to illuminate and systematize Popper’s methodological views in light of his core epistemological commitments. A second and related objective is to gauge which aspects of falsificationism should be identified as “conventionalist”—a label that Popper himself uses (albeit with qualifications) but that is compromised by and, thus, stands in need of elucidation because of Popper’s idiosyncratic understanding of conventionalism. Third, by elaborating Popper’s virtue-epistemological, dialogical model of (...) rationality, I show how Popper’s conventionalism, fallibilism, and critical rationalism form a coherent system. This system allows Popper to accord science the status of a privileged source of knowledge—without naïve appeal to authority. My systematization of Popper’s views yields an intrinsically and exegetically more satisfactory reading of Popper’s falsificationism than usual presentations. Thanks to its marked flexibility and methodological liberalism, it bypasses many standard objections but still offers sound and relevant methodological advice. With its “virtue-methodological” thrust, Popper sketches an original and promising approach to methodology, the fertility of which deserves further exploration for contemporary debates. (shrink)

This paper outlines a new type of skepticism that is both compatible with fallibilism and supported by work in psychology. In particular, I will argue that we often cannot properly trust our ability to rationally evaluate reasons, arguments, and evidence (a fundamental knowledge-seeking faculty). We humans are just too cognitively impaired to achieve even fallible knowledge, at least for many beliefs.

This paper explores two related issues concerning Locke’s account of epistemic justification for empirical knowledge. One issue concerns the degree of justification needed for empirical knowledge. Commentators almost universally take Locke to hold a fallibilist account of justification, whereas I argue that Locke accepts infallibilism. A second issue concerns the nature of justification. Many (though not all) commentators take Locke to have a thoroughly internalist conception of justification for empirical knowledge, whereas I argue that he has a (partly) externalist conception (...) of justification: it is the fact that sensation is caused by an external object that justifies our belief in the corresponding object. So, while most commentators take Locke to be a fallibilist with an internalist conception of justification for empirical knowledge, I argue he is actually an infallibilist with an externalist conception of justification. (shrink)

I present a cumulative case for the thesis that we only know propositions that are certain for us. I argue that this thesis can easily explain the truth of eight plausible claims about knowledge: -/- (1) There is a qualitative difference between knowledge and non-knowledge. (2) Knowledge is valuable in a way that non-knowledge is not. (3) Subjects in Gettier cases do not have knowledge. (4) If S knows that P, P is part of S’s evidence. (5) If S knows (...) that P, ~P is epistemically impossible for S. (6) If S knows that P, S can rationally act as if P. (7) If S knows that P, S can rationally stop inquiring whether P. (8) If S knows each of {P1, P2, … Pn}, and competently deduces Q from these propositions, S knows that Q. -/- I then argue that the skeptical costs of this thesis are outweighed by its explanatory power. (shrink)