In this paper I present an argument for the claim that you ought to do something only if you may believe that you ought to do it. More exactly, I defend the following principle about normative reasons: An agent A has decisive reason to φ only if she also has sufficient reason to believe that she has decisive reason to φ. I argue that this principle follows from the plausible assumption that it must be possible for an agent (...) to respond correctly to her reasons. In conclusion, I discuss some implications of this argument (given that some other standard assumptions about reasons hold). One such implication is that we are always in a position to be justified in believing all truths about what we have decisive reason (or ought) to do. (shrink)

Most philosophers believe that a person can have an obligation only insofar as she is able to fulfil it, a principle generally referred to as “Ought Implies Can”. Arguably, this principle reflects something basic about the ordinary concept of obligation. However, in a paper published recently in this journal, Wesley Buckwalter and John Turri presented evidence for the conclusion that ordinary people in fact reject that principle. With a series of studies, they claimed to have demonstrated that, in people’s (...) judgements, obligations persist irrespective of whether those who hold them have the ability to fulfil them. We argue in this paper that due to some problems in their design, Buckwalter & Turri’s conclusions may not be war- ranted. We present the results of a series of studies demonstrating the problems with their design and showing that, with an improved design, people judge that obligation depends on ability after all. (shrink)

Those who want to deny the ‘ought implies can’ principle often turn to weakened views to explain ‘ought implies can’ phenomena. The two most common versions of such views are that ‘ought’ presupposes ‘can’, and that ‘ought’ conversationally implicates ‘can’. This paper will reject both views, and in doing so, present a case against any pragmatic view of ‘ought implies can’. Unlike much of the literature, I won't rely on counterexamples, but instead will argue that (...) each of these views fails on its own terms. ‘Ought’ and ‘can’ do not obey the negation test for presupposition, and they do not obey the calculability or the cancelability tests for conversational implicature. I diagnose these failures as partly a result of the importance of the contrapositive of ‘ought implies can’. I end with a final argument emphasizing the role the principle plays in moral thinking, and the fact that no pragmatic account can do it justice. (shrink)

Can epistemology require the impossible? Many philosophers believe the answer is ‘no’; if an epistemological theory generates a requirement that it would be impossible to satisfy, then, no matter how attractive the theory is, it is false. This view seems to depend on the idea that ought implies can in epistemology, at least in some sense. How should we understand this principle? In this paper, I introduce and explore a strong version of an epistemic ought implies can principle (...) whereby an epistemic ought implies a psychological can. I outline a novel way to understand this principle—one which takes it in a contextualist spirit—and argue that it can meet two serious challenges that often lead philosophers to reject similar principles. The challenges are making the notion of ‘psychological ability’ sufficiently clear and avoiding an excessive permissiveness which diminishes the normative force of epistemic requirements. The upshot is that a strong epistemic ought implies can principle is more plausible than many philosophers think. (shrink)

In this paper, I present the results of an experimental study on intuitions about moral obligation (ought) and ability (can). Many philosophers accept as an axiom the principle known as “Ought Implies Can” (OIC). If the truth of OIC is intuitive, such that it is accepted by many philosophers as an axiom, then we would expect people to judge that agents who are unable to perform an action are not morally obligated to perform that action. The results of (...) my experimental study show that participants were more inclined to judge that an agent ought to perform an action than that the agent can perform the action. Overall, participants said that an agent ought to perform an action even when they said that the agent cannot do it. I discuss the implications of these results for the debate over OIC. (shrink)

The moral principle that Ought Implies Can (“OIC”) is often assumed without argument in normative discourse. Is this assumption defensible? Some would argue that it is not, as there are many purported counterexamples against it in the literature. However, OIC is not so much a single principle as rather a family of them. In this paper, I will argue that, while not every OIC-type principle is defensible, at least one of them may be. I defend the cognate moral principle (...) that Ought Implies Can or Could Have (“OICCH”). I first show that it is able to circumvent the traditional counterexamples to OIC. And then I show that OICCH is even more plausible than some of the best alternative OIC-type principles to date. The upshot of this paper is that those who find OIC compelling should consider accepting OICCH instead. (shrink)

Scepticism about ought simpliciter is the view that there is no such thing as what one ought simpliciter to do. Instead, practical deliberation is governed by a plurality of normative standpoints, each authoritative from their own perspective but none authoritative simpliciter. This paper aims to resist such scepticism. After setting out the challenge in general terms, I argue that scepticism can be resisted by rejecting a key assumption in the sceptic’s argument. This is the assumption that standpoint-relative (...) class='Hi'>ought judgments bring with them a commitment to act in accordance with those judgments. Instead, I propose an alternative account of our normative concepts according to which only ought simpliciter judgments commit one to acting in accordance with those judgments. In addition to answering the sceptical challenge, the proposal offers an independently motivated account of what makes a concept normatively authoritative. (shrink)

There are many different oughts. There is a moral ought, a prudential ought, an epistemic ought, the legal ought, the ought of etiquette, and so on. These oughts can prescribe incompatible actions. What I morally ought to do may be different from what I self-interestedly ought to do. Philosophers have claimed that these conflicts are resolved by an authoritative ought, or by facts about what one ought to do simpliciter or all-things-considered. (...) However, the only coherent notion of an ought simpliciter has preposterous first-order normative commitments. It is more reasonable to reject the ought simpliciter in favor of the form of normative pluralism advocated in (Tiffany 2007). (shrink)

There are two central kinds of epistemological mistakes: believing things you shouldn’t, and failing to believe things that you should. The knowledge-first program offers a canonical explanation for the former: if you believe something without knowing it, you violate the norm to believe only that which you know. But the explanation does not extend in any plausible way to a story about what’s wrong with suspending judgment when one ought to believe. In this paper I explore prospects for a (...) knowledge-centering account of positive epistemic norms that describe epistemic duties to believe. (shrink)

I defend the following version of the ought-implies-can principle: (OIC) by virtue of conceptual necessity, an agent at a given time has an (objective, pro tanto) obligation to do only what the agent at that time has the ability and opportunity to do. In short, obligations correspond to ability plus opportunity. My argument has three premises: (1) obligations correspond to reasons for action; (2) reasons for action correspond to potential actions; (3) potential actions correspond to ability plus opportunity. In (...) the bulk of the paper I address six objections to OIC: three objections based on putative counterexamples, and three objections based on arguments to the effect that OIC conflicts with the is/ought thesis, the possibility of hard determinism, and the denial of the Principle of Alternate Possibilities. (shrink)

I report the results of a follow-up study, designed to address concerns raised by Kurthy and Lawford-Smith in response to my original study on intuitions about moral obligation (ought) and ability (can). Like the results of the original study, the results of the follow-up study do not support the hypothesis that OIC is intuitive. The results of both studies suggest that OIC is probably not a principle of ordinary moral cognition. As I have argued in my paper, I take (...) this to mean that OIC can no longer be taken as axiomatic. It must be argued for without appealing to intuitions. (shrink)

This paper aims to contribute to the current debate about the status of the “Ought Implies Can” principle and the growing body of empirical evidence that undermines it. We report the results of an experimental study which show that people judge that agents ought to perform an action even when they also judge that those agents cannot do it and that such “ought” judgments exhibit an actor-observer effect. Because of this actor-observer effect on “ought” judgments and (...) the Duhem-Quine thesis, talk of an “empirical refutation” of OIC is empirically and methodologically unwarranted. What the empirical fact that people attribute moral obligations to unable agents shows is that OIC is not intuitive, not that OIC has been refuted. (shrink)

In this paper, I demonstrate that Kant's commitment to an asymmetry between the control conditions for praise and blame is explained by his endorsement of the principle Ought Implies Can (OIC). I argue that Kant accepts only a relatively weak version of OIC and that he is hence committed only to a relatively weak requirement of alternate possibilities for moral blame. This suggests that whether we are transcendentally free is irrelevant to questions about moral permissibility and moral blameworthiness.

l. There is an antinomy in Hare's thought between Ought-Implies-Can and No-Indicatives-from-Imperatives. It cannot be resolved by drawing a distinction between implication and entailment. 2. Luther resolved this antinomy in the l6th century, but to understand his solution, we need to understand his problem. He thought the necessity of Divine foreknowledge removed contingency from human acts, thus making it impossible for sinners to do otherwise than sin. 3. Erasmus objected (on behalf of Free Will) that this violates Ought-Implies-Can (...) which he supported with Hare-style ordinary language arguments. 4. Luther a) pointed out the antinomy and b) resolved it by undermining the prescriptivist arguments for Ought-Implies-Can. 5. We can reinforce Luther's argument with an example due to David Lewis. 6. Whatever its merits as a moral principle, Ought-Implies-Can is not a logical truth and should not be included in deontic logics. Most deontic logics, and maybe the discipline itself, should therefore be abandoned. 7. Could it be that Ought-Conversationally-Implies-Can? Yes - in some contexts. But a) even if these contexts are central to the evolution of Ought, the implication is not built into the semantics of the word; b) nor is the parallel implication built into the semantics of orders; and c) in some cases Ought conversationally implies Can, only because Ought-Implies-Can is a background moral belief. d) Points a) and b) suggest a criticism of prescriptivism - that Oughts do not entail imperatives but that the relation is one of conversational implicature. 8. If Ought-Implies-Can is treated as a moral principle, Erasmus' argument for Free Will can be revived (given his Christian assumptions). But it does not 'prove' Pelagianism as Luther supposed. A semi-Pelagian alternative is available. (shrink)

This paper concerns the semantic difference between strong and weak neces-sity modals. First we identify a number of explananda: their well-known in-tuitive difference in strength between ‘must’ and ‘ought’ as well as differ-ences in connections to probabilistic considerations and acts of requiring and recommending. Here we argue that important extant analyses of the se-mantic differences, though tailored to account for some of these aspects, fail to account for all. We proceed to suggest that the difference between ’ought’ and (...) ’must’ lies in how they relate to scalar and binary standards. Briefly put, must(φ) says that among the relevant alternatives, φ is selected by the relevant binary standard, whereas ought(φ) says that among the relevant al-ternatives, φ is selected by the relevant scale. Given independently plausi-ble assumptions about how standards are provided by context, this ex-plains the relevant differences discussed. (shrink)

Sometimes it is indeterminate what an agent morally ought do. This generates a Decision Ought Challenge—to give moral guidance to agents in such a scenario. This article is a field guide to the options for a theory of the decision ought for cases of indeterminacy. Three categories of view are evaluated, and the best representative for each is identified.

In the classic Miners case, an agent subjectively ought to do what they know is objectively wrong. This case shows that the subjective and objective ‘oughts’ are somewhat independent. But there remains a powerful intuition that the guidance of objective ‘oughts’ is more authoritative—so long as we know what they tell us. We argue that this intuition must be given up in light of a monotonicity principle, which undercuts the rationale for saying that objective ‘oughts’ are an authoritative guide (...) for agents and advisors. (shrink)

Stew Cohen is a sceptic when it comes to epistemic obligations to gather evidence. On his view, epistemic requirements to update on evidence relevant to p only get off the ground insofar as one is already attending to whether p. In this paper, I do two things: first, I put forth two worries for Cohen's scepticism, having to do with restrictions on 'ought implies can', and the nature of the evidential having relation. Second, I defend an account of epistemic (...) obligations to attend, on which the corresponding epistemic norms drop out of epistemic functions. (shrink)

I argue that there is a surprising asymmetry in the way that the demands of epistemic normativity are constrained by one’s abilities: positive requirements to believe things obey an ought-implies-can principle, but negative requirements to not believe things do not.

What does logic tells us how about we ought to reason? If P entails Q, and I believe P, should I believe Q? I will argue that we should embed the issue in an independently motivated contextualist semantics for ‘ought’, with parameters for a standard and set of propositions. With the contextualist machinery in hand, we can defend a strong principle expressing how agents ought to reason while accommodating conflicting intuitions. I then show how our judgments about (...) blame and guidance can be handled by this machinery. (shrink)

This is a short response to Sybille Schmidt's paper (in the same volume) "Is There an Ethics of Forgetting?". The response starts out by admitting that forgetting is an essential function of human existence, that it serves, as it were, an important evolutionary function: that it is good, since it contributes to our well-being, to have the ability to forget. But this does not give us as answer, affirmative or not, to Schmidt’s title question: “Is There an Ethics of Forgetting?” (...) The main impediment to answering this question, certainly to answering it in the affirmative, seems to be a problem that Schmidt mentions but does not in the end tackle head on: the question whether we can willfully forget – or, for that matter, remember – our own or others' past deeds. For if we cannot forget even what we will to forget, then, by the so-called "ought implies can" principle, no obligations (or even permissions) arise for us to forget (or remember) anything. The rest of the response spells out four possible ways of tackling this problem, ultimately arguing that, given the advances in medicine, it might well become possible - and to some extent it is already possible - to forget what we will to forget. (shrink)

Book Information The Is-Ought Problem: An Investigation in Philosophical Logic. By Gerhard Schurz. Kluwer. Dordrecht. 1997. Pp. x + 332. £92.25.

The moral error theory generally does not receive good press in metaethics. This paper adds to the bad news. In contrast to other critics, though, I do not attack error theorists’ characteristic thesis that no moral assertion is ever true. Instead, I develop a new counter-argument which questions error theorists’ ability to defend their claim that moral utterances are meaningful assertions. More precisely: Moral error theorists lack a convincing account of the meaning of deontic moral assertions, or so I will (...) argue. (shrink)

The is-ought gap is Hume’s claim that we can’t get an ‘ought’ from just ‘is’s. Prior (“The Autonomy of Ethics,” 1960) showed that its most straightforward formulation, a staple of introductory philosophy classes, fails. Many authors attempt to resurrect the claim by restricting its domain syntactically or by reformulating it in terms of models of deontic logic. Those attempts prove to be complex, incomplete, or incorrect. I provide a simple reformulation of the is-ought gap that closely fits (...) Hume’s description of it. My formulation of the gap avoids the proposed counterexamples from Prior and offers a natural explanation of why they seem compelling. Moreover, I show that my formulation of the gap is guaranteed by standard theories of the semantics of normative terms, and that provides a more general reason to accept it. (shrink)

According to typical ought-implies-can principles, if you have an obligation to vaccinate me tomorrow, then you can vaccinate me tomorrow. Such principles are uninformative about conditional obligations: what if you only have an obligation to vaccinate me tomorrow if you synthesize a vaccine today? Then maybe you cannot vaccinate me tomorrow ; what you can do instead, I propose, is make it the case that the conditional obligation is not violated. More generally, I propose the ought-implies-can-obey principle: an (...) agent has an obligation only at times at which the agent can obey the obligation. I also propose another principle, which captures the idea that ‘ought’ implies ‘can avoid’. I defend both principles mainly by arguing that they help explain why agents lose obligations, including conditional ones. (shrink)

This paper focuses on the Enkratic principle of rationality, according to which rationality requires that if an agent sincerely and with conviction believes she ought to X, then X-ing is a goal in her plan. We analyze the logical structure of Enkrasia and its implications for deontic logic. To do so, we elaborate on the distinction between basic and derived oughts, and provide a multi-modal neighborhood logic with three characteristic operators: a non-normal operator for basic oughts, a non-normal operator (...) for goals in plans, and a normal operator for derived oughts. We prove two completeness theorems for the resulting logic, and provide a dynamic extension of the logic by means of product updates. We illustrate how this setting informs deontic logic by considering issues related to the filtering of inconsistent oughts, the restricted validity of deontic closure, and the stability of oughts and goals under dynamics. (shrink)

Hume seems to contend that you can’t get an ought from an is. Searle professed to prove otherwise, deriving a conclusion about obligations from a premise about promises. Since (as Schurz and I have shown) you can’t derive a substantive ought from an is by logic alone, Searle is best construed as claiming that there are analytic bridge principles linking premises about promises to conclusions about obligations. But we can no more derive a moral obligation to pay up (...) from the fact that a promise has been made than we can derive a duty to fight a duel from the fact that a challenge has been issued – just conclusions about what we ought to do according to the rules of the relevant games. Hume suggests bridge principles that would take us from the rules of the games to conclusions about duties, but these principles are false. My argument features an obstreperous earl, an anarchist philosopher and a dueling Prime Minister. (shrink)

It is almost an epistemological platitude that the goal of inquiry is to pursue truth-acquisition and falsity-avoidance. But further reflection on this dual goal of inquiry reveals that the two (sub)goals are in tension because they are inversely proportionate: the more we satisfy the one (sub)goal the less we satisfy the other and vice versa. I elaborate the inverse proportionality point in some detail and bring out its puzzling implications about the normative question of what one ought to believe. (...) As I argue, given the tension between the two (sub)goals, the problem of the correct regulation of belief-fixation pops to the surface. Call this ‘the James problem’ in tribute to William James who first drew attention to the problem. As a response ‘to the James Problem’, I sketch the contours of a solution to the problem that involves the rather neglected epistemic concepts of understanding and wisdom and links these concepts with the goal of eudaimonia (or living well). The resultant theory constitutes an approach to epistemic normativity that makes little use of the traditional epistemic concepts of truth and knowledge that have historically dominated the field of epistemology. (shrink)

Die meisten Philosophen stimmen darin überein, dass Kant sich dem Prinzip „Sollen impliziert Können“, bzw. „ought implies can“ (OIC), verschrieben hat. Allerdings sind sich nur wenige darüber einig, wie die Bedeutung von OIC zu verstehen ist. Außerhalb der Kant-Wissenschaft gibt es Debatten über die Bedeutung von „sollen“, die Bedeutung von „impliziert“ und die Bedeutung von „können“ in diesem Prinzip. Innerhalb der Kant-Forschung besteht kein Konsens darüber, was Kant zu diesen Themen dachte. In diesem Artikel versuche ich, diese Situation zu (...) verbessern. In Abschnitt I überprüfe ich die Sekundärliteratur zu Kants Engagement für OIC und erkläre, wo die Interpretation meiner Meinung nach schief geht. In Abschnitt II untersuche ich einige der direkten Textbeweise dafür, dass Kant eine bestimmte Version von OIC zugeschrieben wird. In Abschnitt III lege ich dar, was meiner Meinung nach die wichtigsten doktrinären Gründe dafür sind, Kant diese Version von OIC zuzuschreiben. (shrink)

n ‘Modern Moral Philosophy’ Anscombe argues that the moral ‘ought’ should be abandoned as the senseless survivor from a defunct conceptual scheme. I argue 1) That even if the moral ‘ought’ derives its meaning from a Divine Law conception of ethics it does not follow that it cannot sensibly survive the Death of God. 2) That anyway Anscombe is mistaken since ancestors of the emphatic moral ‘ought’ predate the system of Christian Divine Law from which the moral (...) ‘ought’ supposedly derives its meaning (Cicero in particular subscribed to something like the modern conception of a duty which seems to be a generalization of the duties attendant on particular roles). 3) That if the moral ‘ought’ derived its meaning from embodying Gods’ commands then the two should have been equated in the minds of true believers. This was not the case. 4) That Anscombe is absurdly wrong in supposing that Protestant moralists had abandoned a Divine Law conception of ethics. 5) That the virtue-based ought-free Aristotelian alternative suggested by Anscombe is unworkable since the basic idea is that it pays in terms of human flourishing to be good (which means inter alia being just). Since it is pretty obvious that there are plenty of good people who don’t flourish and flourishing people who are not good, the neo-Aristotelian program has gradually undergone a degenerating problem-shift: either the pay-off is deferred to the hereafter or being good is incorporated into the pay-off. 6) That there is a certain amount of sophistry in selling the neo-Aristotelian virtues. Since the unjust person is simply somebody who is NOT systematically just, you cannot prove that it pays to be just by arguing that it is a mistake to be systematically UNjust. So too for many of the other virtues. (shrink)

Normative pluralists claim that there cannot be facts about what agents ought or “ought simpliciter” to do when an agent’s reasons from different normative systems (e.g. morality, prudence, aesthetics, etc.) don’t all support the same action. Moral philosophers have embraced the normative pluralist’s claim since at least Sidgwick appeared to do so toward the end of the 19th century. I cast doubt on the normative pluralist’s claim by highlighting some of its implausible normative-cum-metaphysical consequences.

Deontological evidentialism is the claim that S ought to form or maintain S’s beliefs in accordance with S’s evidence. A promising argument for this view turns on the premise that consideration c is a normative reason for S to form or maintain a belief that p only if c is evidence that p is true. In this paper, I discuss the surprising relation between a recently influential argument for this key premise and the principle that ought implies can. (...) I argue that anyone who antecedently accepts or rejects this principle already has a reason to resist either this argument’s premises or its role in support of deontological evidentialism. (shrink)

Morality, it is commonly argued, cannot be extreme in the demands it makes of us, because “ought” implies “can”, and normal human psychology places limits on the extent to which most of us are capable of devoting our lives to the service of others. To evaluate this argument, we need to distinguish different uses of “ought” and “can”. Having distinguished these uses, we find that there is more than one defensible version of the principle that “ought” implies (...) “can”. However, these distinctions can also be deployed to show that the attempt to argue from this principle to the conclusion that morality cannot be extremely demanding fails. (shrink)

Are John Rawls’s most noticeable methodological contributions, reflective equilibrium and the original position, consistent with each other? I draw attention to a worry that they stand in inconsistent relationships to the claim that ought implies can: it can only be the case that we ought to do something if we can do it.

Knows-knows principles in epistemology say that if you know some proposition, then you are in a position to know that you know it. This paper examines the viability of analogous principles in ethics, which I call ought-ought principles. Several epistemologists have recently offered new defences of KK principles and of other related principles, and there has recently been an increased interest in examining analogies between ethics and epistemology, and so it seems natural to examine whether defences of KK (...) and related principles carry over to OO principles. In this paper, I introduce two OO principles, and I show how some arguments in favour of KK carry over to them. Then I show how these OO principles can be used to shed light on a much-discussed case in ethics, that of Professor Procrastinate. (shrink)

Positing group level obligations has come under attack from concerns relating to agency as a necessary requirement for obligation bearing. Roughly stated, the worry is that since only agents can have moral obligations, and groups are not agents, groups cannot have moral obligations. The intuition behind this constraint is itself based on the ability requirement of 'ought implies can': in order for a group to have an obligation it must have the ability to perform an action, but only agents (...) can have abilities. This paper argues that from accounts of shared agency we can develop a concept of joint ability, undermining the problem of agency for group obligations. (shrink)

In 1935, the Nazi government introduced what came to be known as the abrogation of the pro- hibition of analogy. This measure, a feature of the new penal law, required judges to stray from the letter of the written law and to consider instead whether an action was worthy of pun- ishment according to the ‘sound perception of the people’ and the ‘underlying principle’ of existing criminal statutes. In discussions of Nazi law, an almost unanimous conclusion is that a system (...) of criminal law ought not to contain legislation of this sort. This conclusion is often based on how the abro- gation relates to the normative claim that the law ought to be predictable. In particular, it has been argued that since the law ought to be predictable, and since this type of analogy legis- lation implied, caused or contributed to the diminution of the law’s predictability, this type of legislation ought to be prohibited. In this paper, we argue that this argument is not entirely correct. While we believe that the law ought to be predictable and that there is evidence for the claim that the Nazis’ intro- duction of analogical reasoning implied, caused, or contributed to a diminution of predictability, this fact is logically too weak to ground the conclusion that necessarily a penal system ought not to contain legislation of this kind. Despite the undeniable wickedness of the Nazi penal system, this type of analogical reasoning can be made consistent with the pre- dictability of the law. We argue that consistency of this sort depends on whether the use of analogy is supplemented by certain contextual background conditions. The occurrence of these conditions blocks an inference from the fact that the law ought to be predictable to the conclusion that a penal system ought not to allow for this type of analogical reasoning. (shrink)

The late Jerry Cohen struggled to reconcile his egalitarian political principles with his personal style of life. His efforts were inconclusive, but instructive. This comment locates the core of Cohen’s discomfort in an abstract principle that connects what we morally ought to be compelled to do and what we have a duty to do anyway. The connection the principle states is more general and much tighter than Cohen and others, e.g. Thomas Nagel, have seen. Our principles of justice always (...) put our personal integrity to the test, unless those principles are designed not to. But to craft principles with an view to avoiding that test is, as Cohen argued, itself to undermine both justice and our integrity. (shrink)

Defenders of the Kantian maxim, i.e. ‘ought’ implies ‘can’, defend the maxim taking the term “implication” in the sense of ‘entailment’. But if it is granted that “implication” means entailment, then it can be shown that the Kantian maxim that ‘ought’ implies ‘can’ is false. Sinnott-Armstrong attempts to prove the falsity of the maxim by his argument from Self-Imposed Impossibility in which he offers his famous example of Adams. But Sinnott-Armstrong’s example of Adams appears to be not strong (...) enough to prove the falsity of the maxim; it is a subject to be captured by a version of the maxim, namely the Maxim-KT. That is why two new examples of the argument from Self-Imposed Impossibility are presented in this paper which are stronger and are able to prove the falsity of the Kantian maxim. (shrink)

This paper presents the strongest version of a non-perdurantist four-dimensionalism: a theory according to which persisting objects are four-dimensionally extended in space-time, but not in virtue of having maximal temporal parts. The aims of considering such a view are twofold. First, to evaluate whether such an account could provide a plausible middle ground between the two main competitor accounts of persistence: three-dimensionalism and perdurantist four-dimensionalism. Second, to see what light such a theory sheds on the debate between these two competitor (...) theories. I conclude that despite prima facie reasons to suppose that non-perdurantist four-dimensionalism might be a credible alternative to either other account of persistence, ultimately the view is unsuccessful. The reasons for its failure illuminate the sometimes stagnant debate between three-dimensionalists and perdurantists, providing new reasons to prefer a perdurantist metaphysics. (shrink)

In 2002, Bernard Williams delivered a lecture that revisited the arguments of his article 'Ought and moral obligation', published in his Moral Luck. The lecture attributed to the earlier article the thesis that there are no ‘personal’ or (as I put it) ‘owned’ oughts. It also rejected this thesis. This paper explains the idea of an owned ought, and supports Williams’s lecture in asserting that there are owned oughts. It also examines the question of how accurately Williams’s later (...) lecture interprets his earlier article. (shrink)

Kripke’s thesis that meaning is normative is typically interpreted, following Boghossian, as the thesis that meaningful expressions allow of true or warranted use. I argue for an alternative interpretation centered on Wittgenstein’s conception of the normativity involved in “knowing how to go on” in one’s use of an expression. Meaning is normative for Kripke because it justifies claims, not to be saying something true, but to be going on as one ought from prevous uses of the expression. I argue (...) that this represents a distortion of Wittgenstein’s conception of the normativity of meaning, and that Wittgenstein’s conception is preferable. (shrink)

This paper argues that the innovation of an ordering source parameter in the standard Lewis-Kratzer semantics for modals was a mistake, at least for English auxiliaries like ‘ought’, and that a simpler dyadic semantics (as proposed in my earlier work) provides a superior account of normative uses of modals. I programmatically investigate problems arising from (i) instrumental conditionals, (ii) gradability and “weak necessity”, (iii) information-sensitivity, and (iv) conflicts, and show how the simpler semantics provides intuitive solutions given three basic (...) moves: (1) an end-relational analysis of normative modality, (2) a “most” analysis of “weak necessity”, and (3) well-motivated appeals to pragmatics. I conclude with metasemantic observations about the desiderata for a semantics for ‘ought’. (shrink)

We argue for three main claims. First, the sentence ‘A and B ought to φ and ψ’ can express what we a call a joint-ought claim: the claim that the plurality A and B ought to φ and ψ respectively. Second, the truth-value of this joint-ought claim can differ from the truth-value of the pair of claims ‘A ought to φ’ and ‘B ought to ψ.’ This is because what A and B jointly (...) class='Hi'>ought to do can diverge from what they individually ought to do: it may be true that A and B jointly ought to φ and ψ respectively, yet false that A ought to φ and false that B ought to ψ; and vice-versa. Third, either of two prominent semantic analyses of ‘ought’ – Mark Schroeder’s relational semantics, and Angelika Kratzer’s modal semantics – can model joint-ought claims and this difference in truth-value. (shrink)

Examining the moral sense theories of Francis Hutcheson, David Hume, and Adam Smith from the perspective of the is-ought problem, this essay shows that the moral sense or moral sentiments in those theories alone cannot identify appropriate morals. According to one interpretation, Hume's or Smith's theory is just a description of human nature. In this case, it does not answer the question of how we ought to live. According to another interpretation, it has some normative implications. In this (...) case, it draws normative claims from human nature. Anyway, the sentiments of anger, resentment, vengeance, superiority, sympathy, and benevolence show that drawing norms from human nature is sometimes morally problematic. The changeability of the moral sense and moral sentiments in Hume's and Smith's theories supports this idea. Hutcheson's theory is morally more appropriate because it bases morality on disinterested benevolence. Yet disinterested benevolence is not enough for morality. There are no sentiments the presence of which alone makes any action moral. (shrink)

The transformative power of artificial intelligence (AI) is coming to philosophy—the only question is the degree to which philosophers will harness it. In this paper, we argue that the application of AI tools to philosophy could have an impact on the field comparable to the advent of writing, and that it is likely that philosophical progress will significantly increase as a consequence of AI. The role of philosophers in this story is not merely to use AI but also to help (...) develop it and theorize about it. In fact, we argue that philosophers have a prima facie obligation to spend significant effort in doing so, at least insofar as they should spend effort philosophizing. (shrink)

What ought you believe? According to a traditional view, it depends on your evidence: you ought to believe (only) what your evidence supports. Recently, however, some have claimed that what you ought to believe depends not on your evidence but simply on what is true: you ought to believe (only) the truth. In this paper, we present and defend two arguments against this latter view. We also explore some of the parallels between this debate in epistemology, (...) and the debate in ethics about whether how you ought to act depends on your epistemic position, or on all the facts. (shrink)

I defend the view that a reason for someone to do something is just a reason why she ought to do it. This simple view has been thought incompatible with the existence of reasons to do things that we may refrain from doing or even ought not to do. For it is widely assumed that there are reasons why we ought to do something only if we ought to do it. I present several counterexamples to this (...) principle and reject some ways of understanding "ought" so that the principle is compatible with my examples. I conclude with a hypothesis for when and why the principle should be expected to fail. (shrink)

Some philosophers think that there is a gap between is and ought which necessarily makes normative enquiry a different kind of thing than empirical science. This position gains support from our ability to explicate our inferential practices in a way that makes it impermissible to move from descriptive premises to a normative conclusion. But we can also explicate them in a way that allows such moves. So there is no categorical answer as to whether there is or is not (...) a gap. The question of an is-ought gap is a practical and strategic matter rather than a logical one, and it may properly be answered in different ways for different questions or at different times. (shrink)

Every adequate semantics for conditionals and deontic ought must offer a solution to the miners paradox about conditional obligations. Kolodny and MacFarlane have recently argued that such a semantics must reject the validity of modus ponens. I demonstrate that rejecting the validity of modus ponens is inessential for an adequate solution to the paradox.