Desire as Belief

Under contract with Oxford University Press. -/- The book defends desire-as-belief, according to which the word “desire” just picks out a special subset of our beliefs: beliefs about reasons. On this view, wanting to do something is just the same thing as believing that there is reason to do it. This view allows us to see how human behaviour should be explained: by appeal to our desires, which is to say, our beliefs about reasons. This view also allows us to (...) see how desires matter for rationality: because we ought to live up to our conscience. On these matters, desire-as-belief delivers a satisfying middle ground between Humean views on which our desires are all that matter, and anti-Humean views on which our desires never matter. -/- Desire-as-belief has been briefly discussed before, but is often assumed to face decisive objections. The book shows how those objections – such as objections from weakness of will, appetites, animals, and decision theory – can be overcome, in ways that are natural and that illuminate the phenomena in question. Moreover, the book shows how desire-as-belief is superior to rivals such as ethical non-cognitivism, the besire theory, and the guise of the good. (shrink)

In this paper I first argue against one attractive formulation of the motivation argument, and against one attractive formulation of noncognitivism. I do so by example: I suggest that other-regarding normative judgments do not seem to have motivational powers and do not seem to be desires. After defending these two claims, I argue that other views can accommodate the motivational role of normative judgment without facing this objection. For example, desire-as-belief theories do so, since such theories only say that some (...) normative judgments constitute desires, not that all such judgments do so. In short, I argue that, if we are seeking a theory that explains the motivational role of normative judgement, some theories are better than others insofar as they do so without committing to the claim that all normative judgements play such a motivational role. (shrink)

David Lewis describes, then attempts to refute, a simple anti-Humean theory of desire he calls ‘Desire as Belief’. Lewis’ critics generally accept that his argument is sound and focus instead on trying to show that its implications are less severe than appearances suggest. In this paper I argue that Lewis’ argument is unsound. I show that it rests on an essential assumption that can be straightforwardly proven false using ideas and principles to which Lewis is himself committed.

A recent slew of arguments, if sound, would demonstrate that realism about value involves a kind of paradox-I call it the BAD paradox.More precisely, they show that if there are genuine propositions about the good, then one could maintain harmony between one’s desires and one’s beliefs about the good only on pain of violating fundamental principles of decision theory. I show. however, the BAD paradox turns out to be a version of Newcomb’s problem, and that the cognitivist about value can (...) avoid the paradox by embracing casual decision theory. (shrink)

David Lewis has argued against the thesis he calls "Desire as Belief", claiming it is incompatible with the fundamentals of evidential decision theory. I show that the argument is unsound, and demonstrate that a version of desire as belief is compatible with a version of causal decision theory.

In this paper I highlight two noteworthy features of assertions about our desires, and then highlight two ways in which they can mislead us into drawing unwarranted conclusions about desire. Some of our assertions may indicate that we are sometimes motivated independently of desire, and other assertions may suggest that there are vast divergences between our normative judgements and our desires. But I suggest that some such assertions are, in this respect, potentially misleading, and have in fact misled authors such (...) as Russ Shafer-Landau, Jack Woods, and Tim Scanlon. (shrink)

In two curiously neglected papers, David Lewis claims to reduce to absurdity the supposition (commonly labeled DAB) that (some) desires are belief-like. My aim in this paper is to explain the significance of this claim and rebut the proof.

David Lewis [1988; 1996] canvases an anti-Humean thesis about mental states: that the rational agent desires something to the extent that he or she believes it to be good. Lewis offers and refutes a decision-theoretic formulation of it, the `Desire-as- Belief Thesis'. Other authors have since added further negative results in the spirit of Lewis's. We explore ways of being anti-Humean that evade all these negative results. We begin by providing background on evidential decision theory and on Lewis's negative results. (...) We then introduce what we call the indexicality loophole: if the goodness of a proposition is indexical, partly a function of an agent's mental state, then the negative results have no purchase. Thus we propose a variant of Desire-as- Belief that exploits this loophole. We argue that a number of meta-ethical positions are committed to just such indexicality. Indeed, we show that with one central sort of evaluative beliefÐthe belief that an option is rightÐthe indexicality loophole can be exploited in various interesting ways. Moreover, on some accounts, `good' is indexical in the same way. Thus, it seems that the anti-Humean can dodge the negative results. (shrink)

In this paper I try to undermine complacency with a predominant conception of desire, for the sake of refocusing attention on a philosophical problem. The predominant conception holds that to have a desire is to occupy an evaluative outlook, a perspective from which the agent 'sees' the world in practically salient terms. I argue that it is not clear what this theory is a theory of, because the concept of desire at its center is deeply ambiguous. Understood as a theory (...) of desire in what I call the "placeholder" sense, the evaluative outlook theory is at bottom a theory of action explanation. So construed, its claim is relatively uncontroversial, and falls far short of being a full theory of action explanation. Understood as a theory of desire in what I call the "substantive" sense, it does not even go so far as to acknowledge the central problem such a theory has to answer. That problem is how we can be passive (in a particular sense) with respect to our own motivation. (shrink)

Desires matter. What are desires? Many believe that desire is a motivational state: desiring is being disposed to act. This conception aligns with the functionalist approach to desire and the standard account of desire's role in explaining action. According to a second influential approach, however, desire is first and foremost an evaluation: desiring is representing something as good. After all, we seem to desire things under the guise of the good. Which understanding of desire is more accurate? Is the guise (...) of the good even right to assume? Should we adopt an alternative picture that emphasizes desire's deontic nature? What do neuroscientific studies suggest? Essays in the first section of the volume are devoted to these questions, and to the puzzle of desire's essence. In the second part of the volume, essays investigate some implications that the various conceptions of desire have on a number of fundamental issues. For example, why are inconsistent desires problematic? What is desire's role in practical deliberation? How do we know what we want? This volume will contribute to the emergence of a fruitful debate on a neglected, albeit crucial, dimension of the mind. (shrink)

Desire has not been at the center of recent preoccupations in the philosophy of mind. Consequently, the literature settled into several dogmas. The first part of this introduction presents these dogmas and invites readers to scrutinize them. The main dogma is that desires are motivational states. This approach contrasts with the other dominant conception: desires are positive evaluations. But there are at least four other dogmas: the world should conform to our desires (world-to-mind direction of fit), desires involve a positive (...) evaluation (the “guise of the good”), we cannot desire what we think is actual (the “death of desire” principle), and, in neuroscience, the idea that the reward system is the key to understanding desire. The second part of the introduction summarizes the contributions to this volume. The hope is to contribute to the emergence of a fruitful debate on this neglected, albeit crucial, aspect of the mind. (shrink)

Famous results by David Lewis show that plausible-sounding constraints on the probabilities of conditionals or evaluative claims lead to unacceptable results, by standard probabilistic reasoning. Existing presentations of these results rely on stronger assumptions than they really need. When we strip these arguments down to a minimal core, we can see both how certain replies miss the mark, and also how to devise parallel arguments for other domains, including epistemic “might,” probability claims, claims about comparative value, and so on. A (...) popular reply to Lewis's results is to claim that conditional claims, or claims about subjective value, lack truth conditions. For this strategy to have a chance of success, it needs to give up basic structural principles about how epistemic states can be updated—in a way that is strikingly parallel to the commitments of the project of dynamic semantics. (shrink)

The authors argue against direction of fit accounts of the distinction between belief and desire.

How many attitudes must be posited at the level of reductive bedrock in order to reductively explain all the rest? Motivational Humeans hold that at least two attitudes are indispensable, belief and desire. Desire-As-Belief theorists beg to differ. They hold that the belief attitude can do the all the work the desire attitude is supposed to do, because desires are in fact nothing but beliefs of a certain kind. If this is correct it has major implications both for the philosophy (...) of mind, with regards the problem of naturalizing the propositional attitudes, and for metaethics, with regards Michael Smith’s ‘moral problem’. This paper defends a version of Desire-As-Belief, and shows that it is immune to several major objections commonly levelled against such theories. (shrink)

Does the desirability of a proposition depend on whether it is true? Not according to the Invariance assumption, held by several notable philosophers. The Invariance assumption plays an important role in David Lewis’ famous arguments against the so-called Desire-as-Belief thesis (DAB), an anti-Humean thesis according to which a rational agent desires a proposition exactly to the degree that she believes the proposition to be desirable. But the assumption is of interest independently of Lewis’ arguments, for instance since both Richard Jeffrey (...) and James Joyce make the assumption (or, strictly speaking, accept a thesis that implies Invariance) in their influential books on decision theory. The main claim to be defended in this paper is that Invariance is incompatible with certain assumptions of decision theory. I show that the assumption fails on the most common interpretations of desirability and/or choice-worthiness found in decision theory. I moreover show that Invariance is inconsistent with Richard Jeffrey’s decision theory, on which Lewis’ arguments against DAB are based. Finally, I show that Invariance contradicts how we in general do and should think about conditional desirability. (shrink)

The Desire-as-Belief thesis (DAB) states that any rational person desires a proposition exactly to the degree that she believes or expects the proposition to be good. Many people take David Lewis to have shown the thesis to be inconsistent with Bayesian decision theory. However, as we show, Lewis's argument was based on an Invariance condition that itself is inconsistent with the (standard formulation of the) version of Bayesian decision theory that he assumed in his arguments against DAB. The aim of (...) this paper is to explore what impact the rejection of Invariance has on the DAB thesis. Without assuming Invariance, we first refute all versions of DAB that entail that there are only two levels of goodness. We next consider two theses according to which rational desires are intimately connected to expectations of (multi-levelled) goodness, and show that these are consistent with Bayesian decision theory as long as we assume that the contents of 'value propositions' are not fixed. We explain why this conclusion is independently plausible, and show how to construct such propositions. (shrink)

According to the doctrine of the guise of the good, all that is desired is seen by the subject as good to some extent. As a claim about action, the idea is that intentional action, or acting for a reason, is action that is seen as good by the agent. I explore the thesis' main attractions: it provides an account of intentional behavior as something that makes sense to the agent, it paves the way for various views in meta-ethics and (...) normative ethics, and it offers a unified account of practical and theoretical reason. In response to common objections, I examine points of current debate: what is it for something to appear as good? Is value or normative reasons the basic concept at work? How to explain akrasia, perversity in action, and expressive action? I conclude with an overview of alternatives to the guise of the good. (shrink)

"My boat was moored beside an old bathing 'ghat' of the river, almost in ruins. The sun had set,"...https://youtu.be/VAhd2GNf1js. (http://philpapers.org/profile/112741).

[ https://plus.google.com/108060242686103906748/posts/cwvdB6mK3J6 ]"As Literature germinates within me, my words are-“Literature is something, that I need to be acclaimed for, I need to know more...it’s my life that has given me birth, my way of thoughts that I am visualizing in the perspective of all dimensions, my frailties, my faults...my every comprehensive discussion even after my death, my spiritualism, my haunting towards the ecology of the cosmic world, and the way that I have brought up at my elbows to enhance myself (...) more in the bloom of dissolved doomed tragedy of a human life! It is indeed ravenous…but we the beings to run through this midst of life, as I need to pace up with at every inception and the idealistic phenomenal moments…!”. . (http://philpapers.org/profile/112741.). (shrink)

Evaluativism about desire, the view that desires just are, or necessarily involve, positive evaluations of their objects, currently enjoys widespread popularity in many philosophical circles. This chapter argues that evaluativism, in both of its doxastic and perceptual versions, overstates and mischaracterises the connection between desires and evaluations. Whereas doxastic evaluativism implausibly rules out cases where someone has a desire, despite evaluating its object negatively, being uncertain about its value, or having no doxastic attitude whatsoever towards its evaluative status at all, (...) perceptual evaluativism cannot even properly apply to the large class of standing desires. It is also argued that evaluativism about desire is not even well-motivated in the first place: the theory is supposed to solve a particular puzzle about the role desires play in the explanation of action, yet, in fact, it does not offer any help whatsoever in dealing with the relevant puzzle. (shrink)

This paper examines the view that desires are beliefs about normative reasons for action. It describes the view, and briefly sketches three arguments for it. But the focus of the paper is defending the view from objections. The paper argues that the view is consistent with the distinction between the direction of fit of beliefs and desires, that it is consistent with the existence of appetites such as hunger, that it can account for counterexamples that aim to show that beliefs (...) about reasons are not sufficient for desire, such as weakness of will, and that it can account for counterexamples that aim to show that beliefs about reasons are not necessary for desire, such as addiction. The paper also shows how it is superior to the view that desires are appearances of the good. (shrink)

A triviality result for what Lewis called “the Desire by Necessity Thesis” and Broome : 265–267, 1991) called “the Desire as Expectation Thesis” is presented. The result shows that this thesis and three other reasonable conditions can be jointly satisfied only in trivial cases. Some meta-ethical implications of the result are discussed. The discussion also highlights several issues regarding Lewis ’ original triviality result for “the Desire as Belief Thesis” that have not been properly understood in the literature.

I show that David Lewis’s principal principle is not preserved under Jeffrey conditionalization. Using this observation, I argue that Lewis’s reason for rejecting the desire as belief thesis and Adams’s thesis applies also to his own principal principle. 1 Introduction2 Adams’s Thesis, the Desire as Belief Thesis, and the Principal Principle3 Jeffrey Conditionalization4 The Principal Principles Not Preserved under Jeffrey Conditionalization5 Inadmissible Experiences.

David Lewis claims that a simple sort of anti-Humeanism-that the rational agent desires something to the extent he believes it to be good-can be given a decision-theoretic formulation, which Lewis calls 'Desire as Belief' (DAB). Given the (widely held) assumption that Jeffrey conditionalising is a rationally permissible way to change one's mind in the face of new evidence, Lewis proves that DAB leads to absurdity. Thus, according to Lewis, the simple form of anti-Humeanism stands refuted. In this paper we investigate (...) whether Lewis's case against DAB can be strengthened by examining how it fares under rival versions of decision theory, including other conceptions of rational ways to change one's mind. We argue that the anti-Humean may escape Lewis's argument either by adopting a version of causal decision theory, or by claiming that the refutation only applies to hyper-idealised rational agents, or by denying that the decision-theoretic framework has the expressive capacity to formulate anti-Humeanism. (shrink)

I show the incompatibility of two theses: (a) to desire the truth of p amounts to believing a certain proposition about the value of p’s truth; (b) one cannot be said to desire the truth of p if one believes that p is true. Thesis (a), the Desire-As-Belief Thesis, has received much attention since the late 1980s. Thesis (b) is an epistemic variant of Socrates’ remark in the Symposium that one cannot desire what one already has. It turns out that (...) (a) and (b) cannot both be true if it is possible for there to exist an agent who has a desire initially, say the desire for the truth of p, and then expands the corpus of propositions she believes to include p. This result provides a new route to the denial of (a). (shrink)

Bryne & Hajek (1997) argue that Lewis’s (1988; 1996) objections to identifying desire with belief do not go through if our notion of desire is ‘causalized’ (characterized by causal, rather than evidential, decision theory). I argue that versions of the argument go through on certain assumptions about the formulation of decision theory. There is one version of causal decision theory where the original arguments cannot be formulated—the ‘imaging’ formulation that Joyce (1999) advocates. But I argue this formulation is independently objectionable. (...) If we want to maintain the desire as belief thesis, there’s no shortcut through causalization. (shrink)

In “Desire as Belief” and “Desire as Belief II,” David Lewis ( 1988 , 1996 ) considers the anti-Humean position that beliefs about the good require corresponding desires, which is his way of understanding the idea that beliefs about the good are capable of motivating behavior. He translates this anti-Humean claim into decision theoretic terms and demonstrates that it leads to absurdity and contradiction. As Ruth Weintraub ( 2007 ) has shown, Lewis’ argument goes awry at the outset. His decision (...) theoretic formulation of anti-Humeanism is one that no sensible anti-Humean would endorse. My aim is to demonstrate that Lewis’ infelicitous rendering of anti-Humeanism really does undermine the force of his arguments. To accomplish this, I begin by developing a more adequate decision theoretic rendering of the anti-Humean position. After showing that my formulation of anti-Humeanism constitutes a plausible interpretation of the anti-Humean thesis, I go on to demonstrate that if we adopt this more accurate rendition of anti-Humeanism, the view is no longer susceptible to arguments like the ones Lewis has devised. I thereby provide a more robust response to Lewis’ arguments than has yet been offered, and in the process I develop a formulation of anti-Humeanism that creates the possibility for future decision theoretic arguments that, unlike Lewis’, speak directly to the plausibility of anti-Humeanism. (shrink)

Argues for the humean theory of motivation on the grounds that rejecting it requires rejecting decision theory.

Rationalizations of deliberation often make reference to two kinds of mental state, which we call belief and desire. It is worth asking whether these kinds are necessarily distinct, or whether it might be possible to construe desire as belief of a certain sort — belief, say, about what would be good. An expected value theory formalizes our notions of belief and desire, treating each as a matter of degree. In this context the thesis that desire is belief might amount to (...) the claim that the degree to which an agent desires any proposition A equals the degree to which the agent believes the proposition that A would be good. We shall write this latter proposition ‘A◦’ (pronounced ‘A halo’). The Desire-as-Belief Thesis states, then, that to each proposition A there corresponds another proposition A◦, where the probability of A◦ equals the expected value of A. (shrink)

What we believe depends on more than the purely intrinsic facts about us: facts about our environment or context also help determine the contents of our beliefs. 1 This observation has led several writers to hope that beliefs can be divided, as it were, into two components: a "core" that depends only on the individual?s intrinsic properties; and a periphery that depends on the individual?s context, including his or her history, environment, and linguistic community. Thus Jaegwon Kim suggests that "within (...) each noninternal psychological state that enters into the explanation of some action or behavior we can locate an ?internal core state? which can assume the causal-explanatory role of the noninternal state."2 In the same vein, Stephen Stich writes that "nonautonomous" states, like belief, are best viewed as "conceptually complex hybrids" made up of an autonomous component together with historical and contextual features.3 John Perry, whose term I have adopted, distinguishes between belief states, which are determined by an individual?s intrinsic properties, and objects of belief, which are not.4 And Daniel Dennett makes use of the same notion when he asks:5. (shrink)

On Hume’s account of motivation, beliefs and desires are very different kinds of propositional attitudes. Beliefs are cognitive attitudes, desires emotive ones. An agent’s belief in a proposition captures the weight he or she assigns to this proposition in his or her cognitive representation of the world. An agent’s desire for a proposition captures the degree to which he or she prefers its truth, motivating him or her to act accordingly. Although beliefs and desires are sometimes entangled, they play very (...) different roles in rational agency. In two classic papers (Lewis 1988, 1996), David Lewis discusses several challenges to this Humean picture, but ultimately rejects them. We think that his discussion of a central anti-Humean alternative – the desire-as-belief thesis – is in need of refinnement. On this thesis, the desire for proposition p is given by the belief that p is desirable. Lewis claims that ‘[e]xcept in trivial cases, [this thesis] collapses into contradiction’(Lewis 1996, p. 308). The problem, he argues, is that the thesis is inconsistent with the purportedly plausible requirement that one’s desire for a proposition should not change upon learning that the proposition is true; call this the invariance requirement. In this paper, we revisit Lewis’s argument. We show that, if one carefully distinguishes between non-evaluative and evaluative propositions, the desire-asbelief thesis can be rendered consistent with the invariance requirement. Lewis’s conclusion holds only under certain conditions: the desire-as-belief thesis conflicts with the invariance requirement if and only if there are certain correlations between non-evaluative and evaluative propositions. But when there are such correlations, we suggest, the invariance requirement loses its plausibility. Thus Lewis’s argument against the desire-as-belief thesis appears to be valid only in cases in which it is unsound. (shrink)