Reason and Explanation develops a new explanationist account of epistemic justification. Poston argues that the explanatory virtues provide a plausible account of necessary and sufficient conditions for justification. The justification of a subject's belief consists in the explanatory virtue of her entire beliefs compared with other sets of beliefs she could have. Poston's argument for coherentism involves a defense of the epistemic value of background beliefs, the development of a novel framework view of reasons, and the articulation of a mentalism (...) evidentialist account of coherentism. Poston argues against foundationalist views that ground justification in sense experience apart from supporting background beliefs. He extends the argument against foundationalism by examining a coherentist view of a priori knowledge. Finally, he articulates a compatiblist position regarding Bayesianism and inference to the best explanation. (shrink)

A belief is stored if it is in no way before the subject’s mind. The problem of stored beliefs is that of satisfactorily explaining how the stored beliefs which seem justified are indeed justified. In this paper I challenge the two main internalist attempts to solve this problem. Internalism about epistemic justification, at a minimum, states that one’s mental life alone determines what one is justified in believing. First I dispute the attempt from epistemic conservatism, which states that believing justifies (...) retaining belief. Then I defend the attempt from dispositionalism, which assigns a justifying role to dispositions, from some key objections. But by drawing on cognitive psychological research I show that, for internalism, the problem of stored beliefs remains. (shrink)

Evidentialism is a popular theory of epistemic justification, yet, as early proponents of the theory Earl Conee and Richard Feldman admit, there are many elements that must be developed before Evidentialism can provide a full account of epistemic justification, or well-founded belief. It is the aim of this book to provide the details that are lacking; here McCain moves past Evidentialism as a mere schema by putting forward and defending a full-fledged theory of epistemic justification. In this book McCain offers (...) novel approaches to several elements of well-founded belief. Key among these are an original account of what it takes to have information as evidence, an account of epistemic support in terms of explanation, and a causal account of the basing relation that is far superior to previous accounts. The result is a fully developed Evidentialist account of well-founded belief. (shrink)

Paul Silva has recently argued that doxastic justification does not have a basing requirement. An important part of his argument depends on the assumption that doxastic and moral permissibility have a parallel structure. I here reply to Silva's argument by challenging this assumption. I claim that moral permissibility is an agential notion, while doxastic permissibility is not. I then briefly explore the nature of these notions and briefly consider their implications for praise and blame.

The distinction between propositional and doxastic justification is the distinction between having justification to believe P (= propositional justification) versus having a justified belief in P (= doxastic justification). The focus of this paper is on doxastic justification and on what conditions are necessary for having it. In particular, I challenge the basing demand on doxastic justification, i.e., the idea that one can have a doxastically justified belief only if one’s belief is based on an epistemically appropriate reason. This demand (...) has been used to refute versions of coherentism and conservatism about perceptual justification as well as to defend phenomenal “conservatism” and other views besides. In what follows I argue that there is virtually no reason to think there is a basing demand on doxastic justification. I also argue that even if the basing demand were true, it would still fail to serve the dialectical purposes for which it has been employed in arguments concerning coherentism, conservatism, and phenomenal “conservatism”. I conclude by discussing the fact that knowledge has a basing demand and show why this needn’t raise the same sort of problems for coherentism and conservatism that doxastic justification’s basing demand seemed to. (shrink)

In my paper ‘Three Forms of Internalism and the New Evil Demon Problem,’ I argued that the new evil demon problem, long considered to be one of the biggest obstacles for externalism, is also a problem for virtually all internalists. In (McCain 2014a) and in his recent book (McCain 2014b), Kevin McCain provides a challenging and thought provoking reasons for thinking that many internalists do not have any such problem. In this paper, I’ll provide some replies to McCain. Of note, (...) I’ll show that a Frankfurt-style counterfactual intervener, who commonly appears in the free will literature, can also serve as a new evil demon in the epistemology literature. (shrink)

Epistemic internalism, by stressing the indispensability of the subject’s perspective, strikes many as plausible at first blush. However, many people have tended to reject the position because certain kinds of beliefs have been thought to pose special problems for epistemic internalism. For example, internalists tend to hold that so long as a justifier is available to the subject either immediately or upon introspection, it can serve to justify beliefs. Many have thought it obvious that no such view can be correct, (...) as it has been alleged that internalism cannot account for the possibility of the justification of beliefs stored in memory. -/- My aim in this paper is to offer a response that explains how memory justification is possible in a way that is consistent with epistemic internalism and an awareness condition on justification. Specifically, I will explore the plausibility of various options open to internalists, including both foundationalist and non-foundationalist approaches to the structure of justification. I intend to show that despite other difficult challenges that epistemic internalism might face, memory belief poses no special problems that the resources of internalism cannot adequately address. (shrink)

In this chapter, I argue for the thesis that phenomenal consciousness is the basis of epistemic justification. More precisely, I argue for the thesis of phenomenal mentalism, according to which epistemic facts about which doxastic attitudes one has justification to hold are determined by non-epistemic facts about one’s phenomenally individuated mental states. I begin by providing intuitive motivations for phenomenal mentalism and then proceed to sketch a more theoretical line of argument according to which phenomenal mentalism provides the best explanation (...) of the independently motivated thesis of access internalism. The result is a theory of epistemic justification that brings intuition and theory into reflective equilibrium. (shrink)

The new evil demon problem is often considered to be a serious obstacle for externalist theories of epistemic justification. In this paper, I aim to show that the new evil demon problem also afflicts the two most prominent forms of internalism: moderate internalism and historical internalism. Since virtually all internalists accept at least one of these two forms, it follows that virtually all internalists face the NEDP. My secondary thesis is that many epistemologists – including both internalists and externalists – (...) face a dilemma. The only form of internalism that is immune to the NEDP, strong internalism, is a very radical and revisionary view – a large number of epistemologists would have to significantly revise their views about justification in order to accept it. Hence, either epistemologists must accept a theory that is susceptible to the NEDP or accept a very radical and revisionary view. (shrink)

For most of their respective existences, reliabilism and evidentialism (that is, process reliabilism and mentalist evidentialism) have been rivals. They are generally viewed as incompatible, even antithetical, theories of justification.1 But a few people are beginning to re-think this notion. Perhaps an ideal theory would be a hybrid of the two, combining the best elements of each theory. Juan Comesana (forthcoming) takes this point of view and constructs a position called “Evidentialist Reliabilism.” He tries to show how each theory can (...) profit by borrowing elements from the other. Comesana concentrates on reliabilism’s problems and how it might be improved by infusions from evidentialism. This paper follows a similar tack. My emphasis, however, is the reverse of Comesana’s. I highlight problems for evidentialism and show how it could benefit by incorporating reliabilist themes. I am not sanguine that evidentialists will see it my way. They might even view my proposals as an insidious attempt to convert evidentialists to reliabilism. Well, I won’t debate the best way to formulate this paper’s recipe. At any rate, it began with the idea (which anteceded my reading of Comesana) of creating a synthesis of reliabilism and evidentialism. It retains significant strands of that idea, although the synthesis theme does not pervade the entire paper. What is mentalist evidentialism? Its original formulation was succinct. (shrink)

Evidentialism holds that the justified attitudes are determined entirely by the person's evidence. This book is a collection of essays, mostly jointly authored, that support and apply evidentialism.

In this companion volume to Warrant: The Current Debate, Plantinga develops an original approach to the question of epistemic warrant; that is what turns true belief into knowledge. He argues that what is crucial to warrant is the proper functioning of one's cognitive faculties in the right kind of cognitive environment.

The Evidence Thesis is the intuitively plausible principle that in order to know that p one must base her belief that p on adequate evidence. Despite the plausibility of this principle, Andrew Moon (2012) has recently argued that the principle is false. Moon’s argument consists of presenting what he takes to be a clear instance of knowledge and arguing that the subject in the case does not have this knowledge on the basis of any evidence. I argue that Moon’s example (...) fails to be a genuine counterexample to the Evidence Thesis. (shrink)

I advocate Time-Slice Rationality, the thesis that the relationship between two time-slices of the same person is not importantly different, for purposes of rational evaluation, from the relationship between time-slices of distinct persons. The locus of rationality, so to speak, is the time-slice rather than the temporally extended agent. This claim is motivated by consideration of puzzle cases for personal identity over time and by a very moderate form of internalism about rationality. Time-Slice Rationality conflicts with two proposed principles of (...) rationality, Conditionalization and Reflection. Conditionalization is a diachronic norm saying how your current degrees of belief should fit with your old ones, while Reflection is a norm enjoining you to defer to the degrees of belief that you expect to have in the future. But they are independently problematic and should be replaced by improved, time-slice-centric principles. Conditionalization should be replaced by a synchronic norm saying what degrees of belief you ought to have given your current evidence and Reflection should be replaced by a norm which instructs you to defer to the degrees of belief of agents you take to be experts. These replacement principles do all the work that the old principles were supposed to do while avoiding their problems. In this way, Time-Slice Rationality puts the theory of rationality on firmer foundations and yields better norms than alternative, non-time-slice-centric approaches. (shrink)

In this paper, I present counterexamples to the evidence thesis, the thesis that S knows that p at t only if S believes that p on the basis of evidence at t. The outline of my paper is as follows. In section 1, I explain the evidence thesis and make clear what a successful counterexample to the evidence thesis will look like. In section 2, I show that instances of non-occurrent knowledge are counterexamples to the evidence thesis. At the end (...) of section 2, I consider the primary thesis of my paper — that the evidence thesis is false — to be successfully defended. In section 3, I consider three variations of the evidence thesis. The first variation restricts the evidence thesis to occurrent knowledge; the second requires for knowledge that one’s belief could be based on evidence; and the third requires for knowledge that the belief was based on evidence at a suitable prior time. The secondary thesis of this paper is that these variations are also subject to serious objections. (shrink)

Michael Bergmann seeks to motivate his externalist, proper function theory of epistemic justification by providing three objections to the mentalism and mentalist evidentialism characteristic of nonexternalists such as Richard Feldman and Earl Conee. Bergmann argues that (i) mentalism is committed to the false thesis that justification depends on mental states; (ii) mentalism is committed to the false thesis that the epistemic fittingness of an epistemic input to a belief-forming process must be due to an essential feature of that input, and, (...) relatedly, that mentalist evidentialism is committed to the false thesis that the epistemic fittingness of doxastic response B to evidence E is an essential property of B–E; and (iii) mentalist evidentialism is “unmotivated”. I object to each argument. The argument for (i) begs the question. The argument for (ii) suffers from the fact that mentalist evidentialists are not committed to the consequences claimed for them; nevertheless, I show that there is, in the neighborhood, a substantive dispute concerning the nature of doxastic epistemic fittingness. That dispute involves what I call “Necessary Fittingness”, the view that, necessarily, exactly one (at most) doxastic attitude ( belief , or disbelief , or suspension of judgment ) toward a proposition is epistemically fitting with respect to a person’s total evidence at any time. Reflection on my super-blooper epistemic design counterexamples to Bergmann’s proper function theory reveals both the plausibility of Necessary Fittingness and a good reason to deny (iii). Mentalist evidentialism is thus vindicated against the objections. (shrink)

Virtually all philosophers agree that for a belief to be epistemically justified, it must satisfy certain conditions. Perhaps it must be supported by evidence. Or perhaps it must be reliably formed. Or perhaps there are some other "good-making" features it must have. But does a belief's justification also require some sort of awareness of its good-making features? The answer to this question has been hotly contested in contemporary epistemology, creating a deep divide among its practitioners. Internalists, who tend to focus (...) on scientific or theoretical beliefs as the ideal, insist that such awareness is required for justification. Externalists, who think children's ordinary beliefs in obvious facts are paradigm cases of justified belief, say it isn't required. Michael Bergmann's book offers a decisive refutation of internalism and a sustained defense of externalism. (shrink)

In this paper I argue that internalistic foundationalist theories of the justification of memory belief are inadequate. Taking a discussion of John Pollock as a starting point, I argue against any theory that requires a memory belief to be based on a phenomenal state in order to be justified. I then consider another version of internalistic foundationalism and claim that it, too, is open to important objections. Finally, I note that both varieties of foundationalism fail to account for the epistemic (...) status of our justified nonoccurrent beliefs, and hence are drastically incomplete. (shrink)

How does a particular experience evidence a particular perceptual belief for us? As Alvin Plantinga (Warrant and Proper Function, Oxford University Press, 1993, p. 98) puts it, "[W]hat makes it the case that a particular way of being appeared to--being appeared to greenly, say--is evidence for the proposition that I see something green?" Promising, but unsuccessful, answers cite a reliable connection between our having the experience and the belief's being true, our having good reason to believe in such a connection, (...) the proper functioning of our faculties, and objective epistemic norms. A superior view, developed here, is that our experience of being appeared to greenly evidences for us that something is green because we have learned to identify green objects by experiences of that sort. Our learning to do so amounts to our adopting an epistemic norm directing us to form that belief on the basis of that experience. (shrink)

We learn a lot. Friends tell us about their lives. Books tell us about the past. We see the world. We reason and we reflect on our mental lives. As a result we come to know and to form justified beliefs about a range of topics. We also seem to keep these beliefs. How? The natural answer is: by memory. It is not too hard to understand that memory allows us to retain information. It is harder to understand exactly how (...) memory allows us to retain knowledge and reasons for our beliefs. Learning is largely a matter of acquiring reasons for changing views. But how do we keep reasons for the views we keep? The epistemology of memory concerns memory’s role in our having knowledge and justification. This branch of epistemology, unlike nearly all other branches, addresses our having knowledge and justification over time. This article reviews the major epistemic roles that philosophers have assigned to memory. Section 1 surveys the nature of memory and the various memory systems. Some philosophers think the relation knowledge bears to at least one memory system is maximally strong: remembering just is a way of knowing. Section 2 covers this strong relation. Section 3 canvases the main problems that data on human memory pose to theories of justification and the central attempts to solve these problems. Section 4 discusses the historical and contemporary responses to two main skeptical challenges about memory. (shrink)

This paper defines and defends time-slice epistemology, according to which there are no essentially diachronic norms of rationality. First I motivate and distinguish two notions of time-slice epistemology. Then I defend time-slice theories of action under indeterminacy, i.e. theories about how you should act when the outcome of your decision depends on some indeterminate claim. I raise objections to a theory of action under indeterminacy recently defended by Robbie Williams, and I propose some alternative theories in its place. Throughout this (...) discussion, I defend a more general moral about action under indeterminacy, namely that time-slice theories are supported by strong analogies with ethical theories. In particular, our understanding of agents torn between interpretations of a decision situation should be guided by our theories of agents torn between incommensurable values. (shrink)