The basic form of the exclusion problem is by now very, very familiar. 2 Start with the claim that the physical realm is causally complete: every physical thing that happens has a sufficient physical cause. Add in the claim that the mental and the physical are distinct. Toss in some claims about overdetermination, give it a stir, and voilá—suddenly it looks as though the mental never causes anything, at least nothing physical. As it is often put, the physical does all (...) the work, and there is nothing left for the mental to do. (shrink)

Questions about the relative priorities of mind and language suffer from a double obscurity. First, it is often not clear which mental and linguistic facts are in question: we can ask about the relationship between any of the semantic or syntactic properties of public languages and the judgments, intentions, beliefs, or other propositional attitudes of speakers of those languages. Second, there is an obscurity about what 'priority' comes to here.We can approach the first problem by way of the second. Often, (...) talk about one class of facts being prior to another is glossed in terms of the claim that we can give an account of the latter in terms of the former. This gloss might seem to be a small advance, since it is .. (shrink)

This is a reply by the author to the contributors to a symposium on the book, The Range of Reasons (Oxford University Press, 2021).

Epicurus famously argued that death cannot be bad for a person because only painful experiences or something that brings about them can be bad for people, but when a person dies, she cannot experience anything at all, let alone pain. If, as Epicurus argued, death is not something bad for us, then presumably, we have no reason to fear it. In contrast with Epicurus, however, contemporary philosophers of death generally subscribe to the deprivation account of the badness of death, which (...) allows that death can be comparatively bad for the one who dies. Still, many deprivation theorists believe that death, as merely comparatively bad, is not a fitting object of fear. Some of them argue that our attitudes would be unfitting if they respond to comparative value; while others contend that fear is not the kind of attitude that tracks comparative value. In this paper, I critically assess these arguments by deprivation theorists, and argue that, contrary to what these theorists claim, their arguments do not entail that death does not merit fear. (shrink)

Philosophers often identify needing something with requiring it to avoid harm. This view of need is roughly accurate, but no adequate analysis of the relevant sort of requirement has been given, and the relevant notion of harm has not been clarified. Further, the harm-avoidance picture must be broadened, because we also need what is required to reduce danger. I offer two analyses of need (one probabilistic) to address these shortcomings. The analyses are at a high level of generality and accommodate (...) our ordinary notion of need as well as narrower conceptions. I also explain why the only extant, detailed modal account of need, David Wiggins’s (1987/1998), is inadequate. My analyses imply that to have a need for something is to have the (expected) quality of one’s life depend counterfactually on it in a certain way. The analyses shed some light on need’s distinctive normative significance. (shrink)

At the core of the recent debate over moral debunking arguments is a disagreement between explanationist and modalist approaches. Explanationists think that the lack of an explanatory connection between our moral beliefs and the moral truths, given a non-naturalist realist conception of morality, is a reason to reject non-naturalism. Modalists disagree. They say that, given non-naturalism, our beliefs have the appropriate modal features with respect to truth -- in particular they are safe and sensitive -- so there is no problem. (...) -/- There is something of a stand-off here. I argue, though, that by looking at the role explanatory and modal factors have to play in theory choice more generally, and, in particular, by considering the practice of theory choice in science, we can see that the explanationist is right. The lack of an explanatory connection between our moral beliefs and the moral truths is a reason to reject non-naturalist realism about morality. (shrink)

The actualism/possibilism debate in ethics is traditionally formulated in terms of whether true counterfactuals of freedom about the future (true subjunctive conditionals concerning what someone would freely do in the future if they were in certain circumstances) even partly determine an agent's present moral obligations. But the very assumption that there are true counterfactuals of freedom about the future conflicts with the idea that freedom requires a metaphysically open future. We develop probabilism as a solution to the actualism/possibilism debate, a (...) solution that accommodates an open future requirement for freedom. We argue that probabilism resolves the conflicting intuitions that arise between actualists and possibilists and maintains certain distinct advantages over actualism and possibilism. (shrink)

Christian List has recently presented a compatibilist libertarian solution to the free will and determinism problem. He proposes the admixture of libertarianism, which endorses agential alternative possibilities, with physical determinism, which endorses the necessity of physical effects. In this paper, we argue that List's innovative proposal ultimately fails.

Why is gauge symmetry so important in modern physics, given that one must eliminate it when interpreting what the theory represents? In this paper we discuss the sense in which gauge symmetry can be fruitfully applied to constrain the space of possible dynamical models in such a way that forces and charges are appropriately coupled. We review the most well-known application of this kind, known as the 'gauge argument' or 'gauge principle', discuss its difficulties, and then reconstruct the gauge argument (...) as a valid theorem in quantum theory. We then present what we take to be a better and more general gauge argument, based on Noether's second theorem in classical Lagrangian field theory, and argue that this provides a more appropriate framework for understanding how gauge symmetry helps to constrain the dynamics of physical theories. (shrink)

The problem of explanatory asymmetry remains a serious challenge for non-causal accounts of explanation. This paper proposes a novel solution, and it does so by appealing to the theoretical context in which an explanation is offered. The paper develops the problem of explanatory asymmetry for non-causal dependency accounts of explanation, focusing specifically on Alexander Reutlinger’s Counterfactual Theory of Explanation and recent work by Marc Lange and Lina Jansson. It defends the idea that nomological possibility with respect to a global theory (...) is the right constraint on explanation, and it shows how this breaks the apparent symmetry in counterfactual dependence that is the source of the problem. This solution appeals to theoretical context, and the paper develops and defends the version of contextualism in explanation that is required. (shrink)

I defend the view that individual agents have instrumental moral reasons for and against contributing to collective actions. I distinguish three versions of this view found in the literature and argue that only one withstands scrutiny: the version on which each individual contribution to a collective action is a cause of the latter’s large-scale outcomes. The central difficulty with this view is its apparent incompatibility with leading theories of causation. Against these theories I motivate a general structural principle about causation (...) which enables instrumentalism to deliver the intuitively correct verdicts about individual agents’ moral reasons in cases of collective action. (shrink)

Causal eliminativists maintain that all causal talk is false. The prospects for such a view seem to be stymied by an indispensability argument, charging that any agent must distinguish between effective and ineffective strategies, and that such a distinction must commit that agent to causal notions. However, this argument has been under-explored. The contributions of this paper are twofold: first, I provide a thorough explication of the indispensability argument and the various ways it might be defended. Second, I point to (...) an important limitation in the argument and suggest that it does not give us sufficient reason to reject eliminativism. In support of this last claim, I show that the distinction between effective and ineffective strategies could perfectly well be grounded in a counterfactual rather than a causal decision theory and argue that there are fully adequate explanations of how we could come to make the requisite counterfactual judgments that need not invoke causal concepts. (shrink)

The modal account of luck is the predominant account of luck in epistemology and ethics. In the first half of this paper, I discuss three possible interpretations of the modal account and raise objections to each. I then raise an objection to all plausible versions of the modal account, that is, that whether an event is lucky or the extent to which it is a matter of luck will depend on what initial conditions or features of the event one holds (...) constant across nearby possible worlds. However, there is often reasonable disagreement about what the relevant initial conditions of an event are, and the modal account of luck has no means of determining which description of the event is correct. As such, the modal account is subject to a kind of reference class problem, and the view cannot actually tell us the extent to which certain events are a matter of luck. (shrink)

The proper function of the heart is pumping the blood. According to what we call the type etiological view, this is because previous tokens of the type HEART were selected for pumping the blood. Nanay :412–431, 2010) argues that the type etiological view is viciously circular. He claims that the only plausible accounts of trait type individuation use proper functions, such that whenever the type etiological view is supplemented with a plausible account of trait type individuation, the result is a (...) view that uses proper functions to explain proper functions. We refine this objection, and argue that Nanay at most establishes a potentially benign definitional circularity. However, we show that the type etiological view’s reliance on types nevertheless generates a vicious regress. Hence the type etiological view is false. We reject dispositional and modal alternatives to the type etiological view for the reason that they either cannot accommodate malfunction, or do so at the cost of proliferation; and then formulate a novel token etiological view that overcomes both problems because it makes no reference to trait types. (shrink)

According to David Albert, there are certain situations where we can cause events that lie in our past. In response to a well-known objection that we never observe backward causation, he argues that there are good reasons why we can’t tell when it obtains. However, I identify another difficulty with Albert’s view: at face value, it has the unattractive consequence that backward causation is not just possible, but rife. In this article, I show how this implication can be blocked. I (...) then use my analysis to defend Albert’s account from a second well-known objection, namely, that it allows us to control the past. (shrink)

It is commonly thought that that the best system account of lawhood ((Mill (1843), Ramsey (1978)[fp. 1928], Lewis (1973)) makes available a nice explanation for why laws are ‘distinctively appropriate targets of scientific inquiry’ (Hall, 2015). The explanation takes the following general form: laws are especially valuable for agents like us because they efficiently encode a lot of valuable (non-nomic) information in a tractable format. The goal of this paper is to challenge this style of explanation: I argue that the (...) general principle it presupposes is in conflict with our best account of practical rationality. After considering and rejecting a number of proposals for dissolving the tension, I conclude that BSA proponents may need to scale back the explanatory ambitions of their theory; in particular, they may need to give up the hope of non-circular explanations of the value of nomic information. I end by outlining some challenges for the humean world-view that results after this shift. (shrink)

Philosophy and Phenomenological Research, Volume 103, Issue 3, Page 687-709, November 2021.

David Lewis aimed to give an account of causation, and in particular, a semantics for the counterfactuals to which his account appeals, that is compatible with backwards causation and time travel. I will argue that he failed, but not for the reasons that have been offered to date, specifically by Collins, Hall and Paul and by Wasserman. This is significant not the least because Lewis’ theory of causation was the most influential theory over the last quarter of the 20th century; (...) and moreover, Lewis’ spirited defence of time travel in the 1970s has shaped philosophers’ approach to time travel to this day. (shrink)

David Lewis’s attempt to defuse grandfather paradoxes consistently without special restrictions on the ability of time travelers to act in the past is controversial. Kadri Vihvelin uses the case of possible autoinfanticide—killing one’s infant self—to argue on Lewisian grounds that Lewis is wrong, since all counterfactual attempts at autoinfanticide would fail. I present a new defense of Lewis against Vihvelin premised on the possibility of personal _reinstatement_, where a person who dies prematurely is replicated from information collected from a previous (...) live scan. I argue on Lewisian grounds that in a Vihvelin case where Suzy does not attempt to kill Baby Suzy, Vihvelin has not shown that Suzy would have failed had she tried to kill Baby Suzy. For, Baby Suzy might have been reinstated. Hence, even granting Vihvelin’s own assumptions, a Lewisian can assert that Suzy can kill Baby Suzy. Reinstatement does not require a “big” miracle; so autoinfanticide is no biggie. (shrink)

Before a fair, indeterministic coin is tossed, Lucky, who is causally isolated from the coin-tossing mechanism, declines to bet on heads. The coin lands heads. The consensus is that the following counterfactual is true: (M:) If Lucky had bet heads, he would have won the bet. It is also widely believed that to rule (M) true, any plausible semantics for counterfactuals must invoke causal independence. But if that’s so, the hope of giving a reductive analysis of causation in terms of (...) counterfactuals is undermined. Here I argue that there is compelling reason to question the assumption that (M) is true. (shrink)

Does ‘remembering that p’ entail ‘knowing that p’? The widely-accepted epistemic theory of memory answers affirmatively. This paper purports to reveal the tension between ETM and the prevailing anti-luck epistemology. Central to my argument is the fact that we often ‘vaguely remember’ a fact, of which one plausible interpretation is that our true memory-based beliefs formed in this way could easily have been false. Drawing on prominent theories of misremembering in philosophy of psychology, I will construct cases where the subject (...) vaguely remembers that p while fails to meet the safety condition, which imply either that ETM is false or that safety is unnecessary for knowledge. The conclusion reached in this paper will be a conditional: if veritic epistemic luck is incompatible with knowledge, then ‘remembering that p’ does not entail ‘knowing that p’. (shrink)

Philosophy and Phenomenological Research, EarlyView.

Danny Boyle's film Yesterday is a contemporary morality play in which the main character, Jack Malik, a failing singer-songwriter, is magically sent to a different possible world in which the Beatles never existed. Possessing his memory of the Beatles’ catalogue in the new possible world, he is now in sole possession of an extremely valuable artifact. Recording and performing the songs of the Beatles and passing them off as his own, he becomes rich, famous, and deeply unhappy. Once he confesses (...) his wrong-doing, however, he is redeemed and his life becomes wonderful. The presupposition that underlays the plot is that in claiming authorship of the songs of the Beatles in a world in which the Beatles never existed, he is acting immorally. But on what theoretical grounds can this intuitive judgment be justified? Can one plagiarize work for which there is no author in one's world? Saul Kripke, in Naming and Necessity, dubs terms that refer in all possible worlds to be “rigid designators” and considers the metaphysics necessary to support them. In this case, it is not reference but moral responsibility that is invariant under changes of possible world and so we must ask a similar question for “rigid obligators.” We argue that a virtue ethics approach is the only way to support the foundational moral intuition. (shrink)

Why do we have records of the past and not the future? Entropic explanations for this ‘record asymmetry’ have been popular ever since Boltzmann. Foremost amongst these is Albert and Loewer’s account, which explains the record asymmetry using a low-entropy initial macrostate plus an initial probability distribution. However, the details of how this initial state underpins the record asymmetry are not fully specified. In this paper I attempt to plug this explanatory gap in two steps. First, I suggest the record (...) asymmetry is more immediately explained by the ‘fork asymmetry’, which their picture omits. Second, by relating the fork asymmetry to an initial state that’s metaphysically similar to theirs, I clarify how this ultimately underpins the record asymmetry. (shrink)

This paper is on the problem of profligate omissions. The problem is that counterfactual definitions of causation identify as a cause anything that could have prevented an effect but that did not actually occur, which is a highly counterintuitive result. Many solutions of this problem appeal to normative, epistemic, pragmatic, or metaphysical considerations. These existing solutions are in some sense substantive. In contrast, this paper concentrates on the semantics of counterfactuals. I propose to replace Strong Centering with Weak Centering. This (...) allows that the actual world is not the only world that is closest to the actual world. As a result, some counterfactuals that would otherwise have been true, turn out to be false. When these counterfactuals concern causation, fewer causal claims are true. In addition to describing steps towards solving the problem of profligate omissions, the proposal captures an abstraction that is shared by many of the existing solutions: depending on how the distance ordering underlying the Weak Centering condition is constructed and interpreted, some of these existing solutions can be recovered. (shrink)

In this paper, I examine J. Carroll's “Mirror Argument” against the Humean conception of law and H. Beebee's response to this argument. I will first show that Beebee's criticism is quite plausible if it is refined slightly. Then, I will propose a revised version of the Mirror Argument which is immune to criticisms like that of Beebee's. According to the Humean conception of law, I will argue, we should accept the existence of counterfactual dependence relation where there should not be (...) such relation. (shrink)

This article takes stock of the regularity theory of causation. It considers three challenges to the theory: the problem of joint effects, the problems of redundant causation, and omission‐involving causation. The former is often cited as a special, and especially challenging, problem for regularity theories. But the force of this problem has been greatly overstated. The threat to regularity theories instead comes from the latter two.

Causal models show promise as a foundation for the semantics of counterfactual sentences. However, current approaches face limitations compared to the alternative similarity theory: they only apply to a limited subset of counterfactuals and the connection to counterfactual logic is not straightforward. This paper addresses these difficulties using exogenous interventions, where causal interventions change the values of exogenous variables rather than structural equations. This model accommodates judgments about backtracking counterfactuals, extends to logically complex counterfactuals, and validates familiar principles of counterfactual (...) logic. This combines the interventionist intuitions of the causal approach with the logical advantages of the similarity approach. (shrink)

As is well-known, David Lewis’ counterfactual theory of causation is subject to serious counterexamples in ‘exceptional’ cases. What has not received due attention in the literature so far is that Lewis’ theory fails to provide necessary and sufficient conditions for causation in ‘ordinary’ cases, too. In particular, the theory suffers from the ‘problem of large causes’. It is argued that this problem may be fixed by imposing a minimization constraint, whilst this solution brings along substantial costs as well. In particular, (...) a precise formulation of minimization requires defining an ‘essential part of an event’ and/or an ‘essential subevent’. Although the possibility of such a definition is ultimately left open, some doubts are raised on whether the counterfactualists’ resources are fit for this purpose, and whether the challenge can be met without substantially departing from Lewis’ intention, which was to provide a reductive account of causation. (shrink)

The same method that creates adversarial examples to fool image-classifiers can be used to generate counterfactual explanations that explain algorithmic decisions. This observation has led researchers to consider CEs as AEs by another name. We argue that the relationship to the true label and the tolerance with respect to proximity are two properties that formally distinguish CEs and AEs. Based on these arguments, we introduce CEs, AEs, and related concepts mathematically in a common framework. Furthermore, we show connections between current (...) methods for generating CEs and AEs, and estimate that the fields will merge more and more as the number of common use-cases grows. (shrink)

The same method that creates adversarial examples to fool image-classifiers can be used to generate counterfactual explanations that explain algorithmic decisions. This observation has led researchers to consider CEs as AEs by another name. We argue that the relationship to the true label and the tolerance with respect to proximity are two properties that formally distinguish CEs and AEs. Based on these arguments, we introduce CEs, AEs, and related concepts mathematically in a common framework. Furthermore, we show connections between current (...) methods for generating CEs and AEs, and estimate that the fields will merge more and more as the number of common use-cases grows. (shrink)

The last several decades of research on counterfactual conditionals in the fields of philosophy and linguistics have yielded a predominant paradigm according to which the notion of similarity plays the starring role. Roughly, a counterfactual of the form A > C is true iff the closest A-worlds are all C-worlds, where the closeness of a world is a function of its similarity, in a certain sense, to the actual world. I argue that this is deeply misguided. In some cases we (...) may only care about the closest A-worlds, but quite often we care about some broader variety of A-worlds varying in closeness. After presenting several problem cases for the similarity-based paradigm, some new and some known, I propose an alternative paradigm for the semantics of counterfactuals, which introduces the notion of A-scenarios, understood roughly as different ways of making A true. According to this view, A > C is true iff all the contextually relevant ways of making A true also make C true. I then more carefully spell out a working view that formalizes this idea with greater precision, and explore the consequences of that version of the view. (shrink)

We argue that explanations appealing to logical impossibilities are genuine explanations. Our defense is based on a certain picture of impossibility. Namely, that there are impossibilities and that the impossibilities have structure. Assuming this broad picture of impossibility we defend the genuineness of explanations that appeal to logical impossibilities against three objections. First, that such explanations are at odds with the perceived conceptual connection between explanation and counterfactual dependence. Second, that there are no genuinely contrastive why-questions that involve logical impossibilities (...) and, third, that explanations appealing to logical impossibilities rule nothing out. (shrink)

The sentences that contain empty definite descriptions are sometimes perceived to be truth-valueless and sometimes perceived to be false. Strawson offered an account of this phenomenon. However, his proposal is empirically inadequate, as shown by von Fintel. von Fintel proposes an alternative account based on a mechanism of belief revision. In this paper, I argue that sentences with multiple failing presuppositions pose a problem for von Fintel’s account. Furthermore, I discuss two variants of von Fintel’s theory proposed by Elbourne to (...) see whether they fare any better than the original. The second variant yields an incorrect prediction for the cases at hand. However, the first variant can account for the problematic examples if the false presuppositions are processed in turn. I will propose a revision of this variant that enforces distinct applications of the mechanism for each presupposition. (shrink)

The paper discusses radical constructivism about episodic memory as developed by Kourken Michaelian under the name of “simulationism”, a view that equates episodic memory with mental time travel. An alternative, direct realist view is defended, which implies disjunctivism about the appearance of remembering. While admitting the importance of mental time travel as an underlying cognitive mechanism in episodic memory, as well as the prima facie reasonableness of the simulationist’s critique of disjunctivism, I formulate three arguments in defense of disjunctivism, which (...) thus appears to be a feasible alternative to radical constructivism. (shrink)

This book proposes a semantic theory of conditionals that can account for (i) the variability in usages that conditional sentences can be put; and (ii) both conditional sentences of the form ‘if p, q’ and those conditional thoughts that are expressed without using ‘if’. It presents theoretical arguments as well as empirical evidence from English and other languages in support of the thesis that an adequate study of conditionals has to go beyond an analysis of specific sentence forms or lexical (...) items. The resulting perspective on conditionals is one in which conditionality is located at a higher level than that of the sentence; namely, at the level of thought. The author argues that it is only through adopting such a perspective, and with it, a commitment to context-dependent semantics, that we can successfully represent conditional utterances as they are used and understood by ordinary language users. It will be of interest to students and scholars working on the semantics of conditionals in the fields of linguistics (especially semantics and pragmatics) and philosophy of language. (shrink)

Is the world internally connected by a web of necessary connections or is everything loose and independent? Followers of David Hume accept the latter by upholding Hume’s Dictum, according to which there are no necessary connections between distinct existences. Roughly put, anything can coexist with anything else, and anything can fail to coexist with anything else. Hume put it like this: “There is no object which implies the existence of any other if we consider these objects in themselves.” Since Hume’s (...) day, Hume’s Dictum has played a major role in philosophy, especially in contemporary metaphysics. In ruling out necessary connections, Hume’s Dictum implies that causal relations and the laws of nature are contingent. It makes other demands on our metaphysics of science as well; for example, it places restrictions on our metaphysics of counterfactuals, dispositions, and explanation. The principle has applications in other areas too. Hume’s Dictum places constraints on our theories of abstract objects and moral properties. For example, Hume’s Dictum rules out the view that moral properties are distinct from, but necessarily connected to, non-moral properties. While Hume’s Dictum is a prominent principle in metaphysics, few Humeans have defended the principle at length. It is assumed more often than it is argued for. As a result, Hume’s Dictum no longer enjoys the reputation it once did. It’s common to hear complaints about the lack of arguments in support of Hume’s Dictum. Moreover, philosophers are increasingly willing to defend views that are at odds with Hume’s Dictum. A striking example of this is the recent explosion of interest in views that take causal relations and the laws of nature to be necessary. Humeans can no longer afford to be complacent. An extended defense of Hume’s Dictum is called for, and that’s what this dissertation aims to offer. This dissertation has three parts. In the first part, I lay out some preliminaries and offer a precise formulation of Hume’s Dictum. In the second part, I develop three arguments in favor of Hume’s Dictum. In the final part, I defend Hume’s Dictum against objections. (shrink)

We propose an analysis of backward causation in terms of interventionism that can avoid several problems typically associated with backward causation. Its main advantage over other accounts is that it allows for reducing the problematic task of supporting backward causal claims to the unproblematic task of finding evidence for several ordinary forward directed causal hypotheses.

The notion of risk plays a central role in economics, finance, health, psychology, law and elsewhere, and is prevalent in managing challenges and resources in day-to-day life. In recent work, Duncan Pritchard (2015, 2016) has argued against the orthodox probabilistic conception of risk on which the risk of a hypothetical scenario is determined by how probable it is, and in favour of a modal conception on which the risk of a hypothetical scenario is determined by how modally close it is. (...) In this article, we use Pritchard’s discussion as a springboard for a more wide-ranging discussion of the notion of risk. We introduce three different conceptions of risk: the standard probabilistic conception, Pritchard’s modal conception, and a normalcy conception that is new (though it has some precursors in the psychological literature on risk perception). Ultimately, we argue that the modal conception is ill-suited to the roles that a notion of risk is required to play and explore the prospects for a form of pluralism about risk, embracing both the probabilistic and the normalcy conceptions. (shrink)

David Lewis championed a counterfactual account of causation, but counterfactual accounts have a notoriously difficult time handling cases of late preemption. These are cases in which we still count one event as the cause of another although the effect does not depend on the cause in the way taken to be necessary by the account. Lewis recognized these cases, but they have been shown to be problematic even for his final analysis of causation, the Influence Account. In this paper, I (...) show how these cases led to and remain a problem for Lewis’s Influence Account, and I give a new counterfactual account available to a Lewisian that can handle late preemption cases. What is crucial to my account is that a cause not merely has counterfactual influence over its effects, but that the cause has influence of the right kind. I conclude by arguing that even if problems remain with this account, they will not be problems of late preemption, and the problems stemming from other kinds of cases will be no worse for my account than for other counterfactual accounts. (shrink)

A prominent philosophical debate concerns whether we should accept causal decision theory or evidential decision theory as our best theory of rational choice. However, instead of accepting one of these theories at the expense of the other, an alternative would be to accept that both theories play a partial role in the true account of rational choice. In this paper, I defend a pluralist account of this sort. In particular, I argue that rational permissibility is an indeterminate notion, with EDT (...) and CDT each corresponding to one sharpening of this notion. (shrink)

Do time travellers retain their normal freedom and abilities when they travel back in time? Lewis, Horwich and Sider argue that they do. Time-travelling Tim can kill his young grandfather, his younger self, or whomever else he pleases—and so, it seems can reasonably deliberate about whether to do these things. He might not succeed. But he is still just as free as a non-time traveller. I’ll disagree. The freedom of time travellers is limited by a rational constraint. Tim can’t reasonably (...) deliberate on killing his grandfather, certain that he’ll fail. If Tim follows his evidence, and appropriately self-predicts, he will be certain he won’t kill his grandfather. So if Tim is both evidentially and deliberatively rational, he can’t deliberate on killing his grandfather. This result has consequences. Firstly, it shows how evidential limits in the actual world contribute to our conception of the future as open. Secondly, it undercuts arguments against the possibility of time travel. Thirdly, it affects how we evaluate counterfactuals in time travel worlds, as well as our own. I’ll use the constraint to motivate an evidential and temporally neutral method of evaluating counterfactuals that holds fixed what a relevant deliberating agent has evidence of, independently of her decision. Using this method, an agent’s local abilities may be affected by what happens globally at other times, including the future. (shrink)

The counterfactual comparative account of harm and benefit has several virtues, but it also faces serious problems. I argue that CCA is incompatible with the prudential and moral relevance of harm and benefit. Some possible ways to revise or restrict CCA, in order to avoid this conclusion, are discussed and found wanting. Finally, I try to show that appealing to the context-sensitivity of counterfactuals, or to the alleged contrastive nature of harm and benefit, does not provide a solution.

It is right for a person to believe a proposition if and only if that proposition is true. On this view, truth is a norm for belief. Some, myself included, go further and suggest that truth is the fundamental norm for belief, relative to which other norms governing belief are derivative. Call this the truth view. In a recent paper, Clayton Littlejohn objects to the truth view on the grounds that it cannot explain why epistemic evaluation has an ‘inward-looking focus’, (...) that is, why it concerns a person’s reasons for believing. He takes this not only to undermine the truth view but also to motivate the knowledge view, associated with Timothy Williamson, according to which knowledge is the fundamental norm for belief. In this paper, I show that the truth view can account for the 'inward-looking focus' of epistemic evaluation. In doing so, I draw on some ideas from ethics, specifically, ideas about moral worth. This provides a defence of the truth view and blocks a route to the knowledge view. In addition, it also delivers an account of epistemic evaluation which reveals it to mirror - in structure, not substance - moral evaluation. (shrink)