According to the doctrine of infallibility, one is permitted to believe p if one knows that necessarily, one would be right if one believed that p. This plausible principle—made famous in Descartes’ cogito—is false. There are some self-fulfilling, higher-order propositions one can’t be wrong about but shouldn’t believe anyway: believing them would immediately make one's overall doxastic state worse.

ABSTRACT Self-fulfilling beliefs are, in at least some cases, a kind of belief that is rational to form and hold in the absence of evidence. The rationality of such beliefs have significant implications for a range of debates in epistemology. Most startlingly, it undermines the idea that having sufficient evidence for the truth of is necessary for it to be rational to believe that. The rationality of self-fulfilling beliefs is here defended against the idea that their rationality is incompatible with (...) a compelling closure principle. (shrink)

A number of philosophers have claimed that non-evidential considerations cannot play a role in doxastic deliberation as motivating reasons to believe a proposition. This claim, interesting in its own right, naturally lends itself to use in a range of arguments for a wide array of substantive philosophical theses. I argue, by way of a counterexample, that the claim to which all these arguments appeal is false. I then consider, and reply to, seven objections to my counterexample. Finally, as a way (...) of softening the blow, I show how the counterexample itself suggests a plausible diagnosis of why this claim has seemed so plausible to so many. (shrink)

A number of philosophers have claimed that non-evidential considerations cannot play a role in doxastic deliberation as motivating reasons to believe a proposition. This claim, interesting in its own right, naturally lends itself to use in a range of arguments for a wide array of substantive philosophical theses. I argue, by way of a counterexample, that the claim to which all these arguments appeal is false. I then consider, and reply to, seven objections to my counterexample. Finally, as a way (...) of softening the blow, I show how the counterexample itself suggests a plausible diagnosis of why this claim has seemed so plausible to so many. (shrink)

There are convincing counter-examples to the widely accepted thesis that we cannot believe at will. For it seems possible that the truth of a proposition depend on whether or not one believes it. I call such scenarios cases of Truth Depends on Belief and I argue that they meet the main criteria for believing at will that we find in the literature. I reply to five objections that one might level against the thesis that TDB cases show that believing at (...) will is possible, namely that mind-reading is impossible, in TDB cases, one's belief is caused by one's desire, in TDB scenarios, one chooses not a belief but something else, TDB cases are reducible to Feldman cases, and that if truth depends on belief, we are on the road to a regress. Of course, TDB scenarios hardly, if ever, occur in real life. For three reasons, they are nonetheless important. First, they show that the thesis that it is conceptually impossible to believe at will is simply false. Second, they provide us with an imp.. (shrink)

In this paper, I defend the view that only practical reasons are normative reasons for belief. This requires viewing beliefs as the predictable results of our actions. I will show how this fits with our intuitions about mental autonomy. The remainder of the paper consists in a defense against a series of objections that may be expected against this position. The paper concludes with a metaphilosophical explanation about our conflicting intuitions regarding the normativity of rationality.

In this paper, I argue against the view that epistemic reasons are normative reasons for belief. I begin by responding to some of the most widespread arguments in favor of the normativity of epistemic reasons before advancing two arguments against this thesis. The first is supported by an analysis of what it means to “have” some evidence for p. The second is supported by the claim that beliefs, if they are to be considered as states, cannot have epistemic reasons as (...) normative reasons. (shrink)

The ethics of belief is concerned with the question what we should believe. According to evidentialism, one should believe something if and only if one has adequate evidence for what one believes. According to classic pragmatism, other features besides evidence, such as practical reasons, can make it the case that one should believe something. According to a new kind of pragmatism, some epistemic notions may depend on one’s practical interests, even if what one should believe is independent of one’s practical (...) reasons. In this paper I recount and briefly assess the debate between evidentialism and pragmatism. (shrink)

Some propositions are not likely to be true overall, but are likely to be true if you believe them. Appealing to the platitude that belief aims at truth, it has become increasingly popular to defend the view that such propositions are epistemically rational to believe. However, I argue that this view runs into trouble when we consider the connection between what’s epistemically rational to believe and what’s practically rational to do. I conclude by discussing how rejecting the view bears on (...) three other epistemological issues. First, we’re able to uncover a flaw in a common argument for permissivism. Second, we can generate a problem for prominent versions of epistemic consequentialism. Finally, we can better understand the connection between epistemic rationality and truth: epistemic rationality is a guide to true propositions rather than true beliefs. (shrink)

Two principles in epistemology are apparent examples of the close connection between rationality and truth. First, adding a disjunct to what it is rational to believe yields a proposition that’s also rational to believe. Second, what’s likely if believed is rational to believe. While these principles are accepted by many, it turns out that they clash. In light of this clash, we must relinquish the second principle. Reflecting on its rationale, though, reveals that there are two distinct ways to understand (...) the connection between rationality and truth. Rationality is fundamentally a guide to the belief-independent truth, rather than a guide to acquiring true beliefs. And this in turn has important implications for current discussions of permissivism, epistemic reasons, and epistemic consequentialism. (shrink)

One response to the preface paradox—the paradox that arises when each claim in a book is justified for the author and yet in the preface the author avers that errors remain—counsels against the preface belief. It is this line of thought that poses a problem for any view that places a high value on intellectual humility. If we become suspicious of preface beliefs, it will be a challenge to explain how expressions of fallibility and intellectual humility are appropriate, whether voiced (...) verbally or encoded mentally. Moreover, banning expressions of intellectual humility is especially disturbing in our context, for such a preface claim is just the sort of expression of intellectual humility that is supposed to provide a barrier to the costly damage that can be done by zealous faith found in various forms of fundamentalism. The goal is thus to find a way to express humility without engendering paradox. (shrink)

God, by definition, is all-powerful, all-good, all-wise, and all-knowing. Therein lies a problem for the theist, of course, for every one of these attributes has been the subject of fierce debate. In this paper I want to return to the debate by introducing a new problem for the idea that anyone could have the kind of perfect knowledge God is supposed to have. What distinguishes my problem from others is that the sort of knowledge it focuses on is self-knowledge, hence (...) knowledge of a particularly intimate kind. My claim is that God cannot have infallible knowledge of at least some of his own perfections, in particular his being all-wise or ideally rational. Such ignorance is not only inconsistent with the usual conception of God's omniscience, given that whatever knowledge God possesses is traditionally thought to be be a priori and infallible, but, more importantly, is inconsistent with the fundamental idea that God at least knows infallibly or incorrigibly that he has what it takes to be God: qualities such as omnibenevolence, omnipotence, and supreme wisdom. In short, my claim is that God must have a deep “blindspot” about his own nature, something which is inconsistent with a traditional picture of that nature. (shrink)

Neste artigo examino a possibilidade de agência no domínio epistêmico – a visão compartilhada por muitos filósofos de que possamos ser ativos, ao invés de passivos, em relação às nossas crenças e manifestações de conhecimento. Concluo que a noção de agência epistêmica é plausível apenas em sentido indireto, referindo-se as diferentes ações que realizamos com intuito de melhorar nossos compromissos epistêmicos. Trata-se de um tipo de agência prática, como qualquer agência, mas que não nos autoriza a pensar que possamos estar (...) agindo de alguma maneira quando cremos ou conhecemos. (shrink)

The purpose of this paper is to challenge what is often called the “Uniqueness” thesis. According to this thesis, given one’s total evidence, there is a unique rational doxastic attitude that one can take to any proposition. It is sensible for defenders of Uniqueness to commit to an accompanying principle that: when some agent A has equal epistemic reason both to believe that p and to believe that not p, the unique epistemically rational doxastic attitude for A to adopt with (...) respect to whether p is the suspension of judgment. In this paper, I offer a case wherein the agent has equal epistemic reason both to believe that p and to believe that not p, but the agent is not epistemically required to suspend judgment about whether p. Furthermore, the case is such that there seems to be no uniquely rational attitude for the agent to adopt. (shrink)

Bayesian epistemology tells us with great precision how we should move from prior to posterior beliefs in light of new evidence or information, but says little about where our prior beliefs come from. It offers few resources to describe some prior beliefs as rational or well-justified, and others as irrational or unreasonable. A different strand of epistemology takes the central epistemological question to be not how to change one’s beliefs in light of new evidence, but what reasons justify a given (...) set of beliefs in the first place. We offer an account of rational belief formation that closes some of the gap between Bayesianism and its reason-based alternative, formalizing the idea that an agent can have reasons for his or her (prior) beliefs, in addition to evidence or information in the ordinary Bayesian sense. Our analysis of reasons for belief is part of a larger programme of research on the role of reasons in rational agency (Dietrich and List, Nous, 2012a, in press; Int J Game Theory, 2012b, in press). (shrink)

The beliefs involved in the placebo effect are often assumed to be self-fulfilling, that is, the truth of these beliefs would merely require the patient to hold them. Such a view is commonly shared in epistemology. Many epistemologists focused, in fact, on the self-fulfilling nature of these beliefs, which have been investigated because they raise some important counterexamples to Nozick’s “tracking theory of knowledge.” We challenge the self-fulfilling nature of placebo-based beliefs in multi-agent contexts, analyzing their deep epistemological nature and (...) the role of higher-order beliefs involved in the placebo effect. (shrink)

In this paper I hope to demonstrate two different ways of interpreting the tenets of evidentialism and show why it is important to distinguish between them. These two ways correspond to those proposed by Feldman and Adler. Feldman’s way of interpreting evidentialism makes evidentialism a principle about epistemic justification, about what we ought to believe. Adler’s, on the other hand, makes evidentialism a principle about how we come to believe, what it is, broadly speaking, rational for us to believe. Having (...) identified this difference, I consider two complaints levied against evidentialism, namely what I call the threshold problem and what I call the availability problem, and hope to show that: only an independent, bracketed justification principle of evidentialism can deal with those problems; the rationality principle of evidentialism is not in fact independent from the justification principle; the rationality principle is hard to motivate; and that in the final analysis the argument for the justification principle depends on the rationality principle. I thus conclude that although it may be convenient for evidentialists to treat these two principles as independent, such an independence cannot be maintained. (shrink)

Philosophers have recently argued that self-fulfilling beliefs constitute an important counter-example to the widely accepted theses that we ought not and cannot believe at will. Cases of self-fulfilling belief are thought to constitute a special class where we enjoy the epistemic freedom to permissibly believe for pragmatic reasons, because whatever we choose to believe will end up true. In this paper, I argue that this view fails to distinguish between the aim of acquiring a true belief and the aim of (...) believing what is true. While one cannot usually fail to establish that one will acquire a true belief without establishing the truth of the believed proposition, in the case self-fulfilling belief the two can come apart. I argue that insofar as the aim of belief has to do with determining whether the believed proposition is true, it will be both impossible and impermissible to believe for pragmatic reasons. (shrink)

This paper considers the relationship between evidence and self-fulfilling beliefs—beliefs whose propositional contents will be true just in case—and because—an agent believes them. Following Grice, many philosophers hold that believing such propositions would involve an impermissible form of bootstrapping. This paper argues that such objections get their force from a popular but problematic function-model of theoretical deliberation, and that attending to the case of self-fulfilling belief can help us see why such a model is mistaken. The paper shows that on (...) a revised model of theoretical deliberation our evidence will problematically underdetermine any appropriate doxastic attitude: when belief in a proposition is self-fulfilling, our evidence is insufficient to support belief, disbelief, or even suspended judgment toward that proposition. (shrink)

Knowledge is good, ignorance is bad. So it seems, anyway. But in this dissertation, I argue that some ignorance is epistemically valuable. Sometimes, we should suspend judgment even though by believing we would achieve knowledge. In this apology for ignorance (ignorance, that is, of a certain kind), I defend the following four theses: 1) Sometimes, we should continue inquiry in ignorance, even though we are in a position to know the answer, in order to achieve more than mere knowledge (e.g. (...) understanding) while minimizing the effects of confirmation bias. 2) It’s false that we should believe every proposition such that we are guaranteed to be right about it (and even such that we are guaranteed to know it) if we believe it. 3) Being in a position to know is the norm of assertion: importantly, this does not require belief or (thereby) knowledge, and so proper assertion can survive speaker-ignorance. 4) It can be permissible and conversationally useful to tell audiences things that it is logically impossible for them to come to know: Proper assertion can survive (necessary) audience-side ignorance. Cumulatively, this project suggests that, properly understood, ignorance has an important role to play in the good epistemic life. (shrink)

Suppose you decide or promise to do something that you have evidence is difficult to do. Should you believe that you will do it? On the one hand, if you believe that you will do it, your belief goes against the evidence—since having evidence that it’s difficult to do it constitutes evidence that it is likely that you won’t do it. On the other hand, if you don’t believe that you will do it but instead believe, as your evidence suggests, (...) that it is likely that you will fail, your decision is not serious and your promise is not sincere. This problem—I call it the Epistemological Problem of Difficult Action—is a pressing philosophical problem that each of us faces. In this paper I consider several possible responses to it. I conclude that the right response is to say that we should believe against the evidence. Cases in which we decide or promise to do something that we have evidence is difficult to do are the best counterexamples to evidentialism. (shrink)