Some obligations are conditional such that act A is morally optional, but if one chooses A, one is required to do act B rather than some other less valuable act C. Such conditional obligations arise frequently in research ethics, in the philosophical literature, and in real life. They are controversial: how does a morally optional act give rise to demanding requirements to do the best? Some think that the fact that a putative obligation has a (...) class='Hi'>conditional structure, so defined, is a strike against its being a genuine obligation. I argue that conditional obligations are to be expected in a moral theory that has moral options. (shrink)

Suppose that John has a moral obligation to stop smoking given that smoking is dangerous to his health. Suppose further that smoking is dangerous to his health. Does it follow that John has a moral obligation to stop smoking? Although intuition inclines one to answer in the affirmative, recent developments in deontic logic apparently call this inference into question. The issue at hand is whether unconditional obligations are detachable from conditional obligations on the basis of purely factual (...) considerations. I believe that they are not. In the course of arguing for this position I defend a novel restricted rule of detachment which is constructed out of both factual and normative components. (shrink)

There are plenty of classic paradoxes about conditional obligations, like the duty to be gentle if one is to murder, and about “supererogatory” deeds beyond the call of duty. But little has been said about the intersection of these topics. We develop the first general account of conditional supererogation, with the power to solve familiar puzzles as well as several that we introduce. Our account, moreover, flows from two familiar ideas: that conditionals restrict quantification and that supererogation (...) emerges from a clash between justifying and requiring reasons. (shrink)

In Horton’s All or Nothing Problem, the agent has three options: a permissible act that saves no one, a wrongful act that saves only one child, or a supererogatory act that saves two children. Some may argue that if the agent is not going to save two children, she should save none rather than just one. However, this conclusion is counterintuitive. Although there are many proposed solutions to this problem, none of them provides a fully satisfactory answer. In this article, (...) I argue that it is plausible to accept the Individualist Obligation Principle according to which, the agent is morally permitted to fulfill a _prima facie_ obligation to save an individual in grave peril, provided that doing so demonstrates a substantial engagement with the individualized obligations to each individual involved. (shrink)

It seems that you can be in a position to rescue people in mortal danger and yet have no obligation to do so, because of the sacrifice to you that this would involve. At the same time, if you do save anyone, then you must not leave anyone to die whom it would cost you no additional sacrifice to save. On the basis of these claims, Theron Pummer and Joe Horton have recently defended a ‘conditional obligation of effective altruism’, (...) which requires one to give to the most cost-effective charity if one is going to make a charitable donation at all, all other things equal. Appealing to a distinction between 'thoroughgoing' and 'half-hearted' non-consequentialism, I argue that their inferences don’t go through, and moreover that this sort of argument in general is unlikely to work as a way to defend effective altruism. (shrink)

If doing good is often beyond the call of duty, instances of the All or Nothing Problem abound. I have argued elsewhere that we should solve this problem by accepting a principle that I call Optimific Altruism, which has interesting implications both for the correct account of supererogation and for our obligations to give to charity. However, Theron Pummer and Daniel Muñoz have argued that we should instead solve this problem by rejecting an inference rule that I call (...) class='Hi'>Conditional Obligation. I here recap my preferred solution and argue against this alternative. (shrink)

The crucial feature of obligation sentences to which the puzzles point is that such sentences, and evaluative sentences more generally, are defeasible. They may be warranted, given some information, only to be defeated by further information. A theory that recognizes this no longer needs to see conditional obligation as anything more than a simple combination of unary obligation and the conditional.

This paper investigates the semantic treatment of conditional obligation, explicit permission (often called positive permission), and prohibition based on models with agents and branched time. In such models branches (rather than moments) are taken as basic, and the branching provides a way to represent the indeterminism which is normally presupposed by talk of free will, responsibility, action and ability. Careful treatment of the relation between ability and responsibility avoids many common problems with accounts of conditional obligation. Recognition of (...) the generality often involved in conditional obligations makes possible a sensitive way of expressing some kinds of general prohibitions, which in turn makes it possible to account for the special role of explicit permission. (shrink)

Stewart Shapiro has objected to the epistemicist theory of vagueness on grounds that it gives counterintuitive predictions about cases involving conditional obligation. This paper details a response on the epistemicist’s behalf. I first argue that Shapiro’s own presentation of the objection is unsuccessful as an argument against epistemicism. I then reconstruct and offer two alternative arguments inspired by Shapiro’s considerations, and argue that these fail too, given the information-sensitive nature of conditional obligations.

We present a formal argumentation system for dealing with the detachment of prioritized conditional obligations and permissions. In the presence of facts and constraints, we answer the question whether an unconditional obligation or permission is detachable by considering arguments for and against its detachment. For the evaluation of arguments in favour of detachment, we use a Dung-style argumentation-theoretical semantics. We illustrate how violations and contrary-to-duty scenarios are dealt with in our framework and pay special attention to conflict-resolution via (...) priorities. (shrink)

This paper presents a justification counterpart for dyadic deontic logic, which is often argued to be better than Standard Deontic Logic at representing conditional and contrary-to-duty obligations, such as those exemplified by the notorious Chisholm’s puzzle. We consider the alethic-deontic system (E) and present the explicit version of this system (JE) by replacing the alethic Box-modality with proof terms and the dyadic deontic Circ-modality with justification terms. The explicit representation of strong factual detachment (SFD) is given and finally (...) soundness and completeness of the system (JE) with respect to basic models and preference models is established. (shrink)

This paper examines the logic of conditional obligation, which originates from the works of Hansson, Lewis, and others. Some weakened forms of transitivity of the betterness relation are studied. These are quasi-transitivity, Suzumura consistency, acyclicity and the interval order condition. The first three do not change the logic. The axiomatic system is the same whether or not they are introduced. This holds true under a rule of interpretation in terms of maximality and strong maximality. The interval order condition gives (...) rise to a new axiom. Depending on the rule of interpretation, this one changes. With the rule of maximality, one obtains the principle known as disjunctive rationality. With the rule of strong maximality, one obtains the Spohn axiom (also known as the principle of rational monotony, or Lewis’ axiom CV). A completeness theorem further substantiates these observations. For interval order, this yields the finite model property and decidability of the calculus. (shrink)

Lou Goble proposed powerful conditional deontic logics (CDPM) that are able to deal with deontic conflicts by means of restricting the inheritance principle. One of the central problems for dyadic deontic logics is to properly treat the restricted applicability of the principle “strengthening the antecedent”. In most cases it is desirable to derive from an obligation A under condition B, that A is also obliged under condition B and C. However, there are important counterexamples. Goble proposed a weakened rational (...) monotonicity principle to tackle this problem. This solution is suboptimal as it is for some examples counter-intuitive or even leads to explosion. The paper identifies also other problems of Goble’s systems. For instance, to make optimal use of the restricted inheritance principle, in many cases the user has to manually add certain statements to the premises. An adaptive logic framework based on CDPM is proposed which is able to tackle these problems. It allows for certain rules to be applied as much as possible. In this way counter-intuitive consequences as well as explosion can be prohibited and no user interference is required. Furthermore, for non-conflicting premise sets the adaptive logics are equivalent to Goble’s dyadic version of standard deontic logic. (shrink)

The paper considers two kinds of medieval obligational disputations and the medieval genre of sophismata in relation to the kinds of inferences accepted in them. The main texts discussed are the anonymous Obligationes parisienses from the early 13th century and Richard Kilvington’s Sophismata from the early 14th century. Four different kinds of warranted transition from an antecedent to a consequent become apparent in the medieval discussions: the strong logical validity of basic propositional logic, analytic validity based on conceptual containment, merely (...) semantic impossibility of the antecedent being true without the consequent, and intuitively true counterfactual conditionals. As these different kinds of consequences are spelled out by means of obligational disputations, it appears that the genre of obligations is indeed useful for the “knowledge of consequences,” as the anonymous Obligationes parisienses claims. (shrink)

I present a novel account of unconditional obligation and of its relationship to conditional obligation and bring this account to bear upon Chisholm's puzzle concerning contrary-to duty obligation.

In this paper, we consider two different ways in which modus-ponens type reasoning with conditional obligations may be formalized. We develop necessary and sufficient conditions for the validity of each, and make some philosophical observations about the differences between the minor premises that each formalization requires. All this is done within the context of the Belnap-Perloff stit theory.

Conditional logics were originally developed for the purpose of modeling intuitively correct modes of reasoning involving conditional—especially counterfactual—expressions in natural language. While the debate over the logic of conditionals is as old as propositional logic, it was the development of worlds semantics for modal logic in the past century that catalyzed the rapid maturation of the field. Moreover, like modal logic, conditional logic has subsequently found a wide array of uses, from the traditional (e.g. counterfactuals) to the (...) exotic (e.g. conditional obligation). Despite the close connections between conditional and modal logic, both the technical development and philosophical exploitation of the latter has outstripped that of the former, with the result that noticeable lacunae exist in the literature on conditional logic. My dissertation addresses a number of these underdeveloped frontiers, producing new technical insights and philosophical applications. -/- I contribute to the solution of a problem posed by Priest of finding sound and complete labeled tableaux for systems of conditional logic from Lewis' V-family. To develop these tableaux, I draw on previous work on labeled tableaux for modal and conditional logic; errors and shortcomings in recent work on this problem are identified and corrected. While modal logic has by now been thoroughly studied in non-classical contexts, e.g. intuitionistic and relevant logic, the literature on conditional logic is still overwhelmingly classical. Another contribution of my dissertation is a thorough analysis of intuitionistic conditional logic, in which I utilize both algebraic and worlds semantics, and investigate how several novel embedding results might shed light on the philosophical interpretation of both intuitionistic logic and conditional logic extensions thereof. -/- My dissertation examines deontic and connexive conditional logic as well as the underappreciated history of connexive notions in the analysis of conditional obligation. The possibility of interpreting deontic modal logics in such systems (via embedding results) serves as an important theoretical guide. A philosophically motivated proscription on impossible obligations is shown to correspond to, and justify, certain (weak) connexive theses. Finally, I contribute to the intensifying debate over counterpossibles, counterfactuals with impossible antecedents, and take—in contrast to Lewis and Williamson—a non-vacuous line. Thus, in my view, a counterpossible like "If there had been a counterexample to the law of the excluded middle, Brouwer would not have been vindicated" is false, not (vacuously) true, although it has an impossible antecedent. I exploit impossible (non-normal) worlds—originally developed to model non-normal modal logics—to provide non-vacuous semantics for counterpossibles. I buttress the case for non-vacuous semantics by making recourse to both novel technical results and theoretical considerations. (shrink)

The principal aim of this book is to develop and defend an analysis of the concept of moral obligation. The analysis is neutral regarding competing substantive theories of obligation, whether consequentialist or deontological in character. What it seeks to do is generate solutions to a range of philosophical problems concerning obligation and its application. Amongst these problems are deontic paradoxes, the supersession of obligation, conditional obligation, prima facie obligation, actualism and possibilism, dilemmas, supererogation, and cooperation. By virtue of its (...) normative neutrality, the analysis provides a theoretical framework within which competing theories of obligation can be developed and assessed. This study is a major contribution to metaethics that will be of particular interest to all philosophers concerned with normative ethical theory. (shrink)

Family obligation, which has an exceptionally high salience in traditional Chinese society, continues to be significant in contemporary China. In family relations in particular sentiments and practices morphologically similar to those associated with xiao remains intact in so far as an enduring set of expectations concerning age-based obligation continues to structure behavior toward others. Researchers pursuing the theme of “individualization” in Chinese society, on the other hand, argue that family obligations and filial sentiments have substantially weakened. The present paper (...) will show that under conditions of cultural and social change in China filial behavior through family obligation continues to play an important role even though the conventions associated with the relevant expectations, attitudes and emotions have undergone significant change. The paper argues that the culture-system develops not merely through an internal dynamic and that family obligation must be understood in terms of the social and material context in which it operates and the nature of the motivations and imagery of the people that practice it. (shrink)

We show that Carmo and Jones’ condition 5 conflicts with the other conditions on their models for contrary-to-duty obligations. We then propose a resolution to the conflict.

When Derek Parfit in Reasons and Persons, examined whether the Non-Identity Problem could be solved with the Impersonal Total Principle, he assumed perfect equality in the future population outcomes under his consideration. His thinking was that this assumption could not distort his reasoning, but would make it more simple and clear. He then reasoned that the best future population outcome, according to the Impersonal Total Principle, would be an enormous population, whose members have lives only barely worth living, as a (...) slight lowering in quality of life, according to the principle, can always be more than compensated for by an increase in the number of future people. He found this result impossible to believe and dubbed it the Repugnant Conclusion, concluding that his attempts had ended in failures and that the Non-Identity Problem continues to undermine our beliefs of our obligations to the future. The purpose of this paper is to examine the implications of the Impersonal Total Principle in real-world circumstances where the inevitability of inequality is taken into account. What, if anything, will this imply regarding the Repugnant Conclusion, the indirect version of the Non-Identity Problem and our abilities to ground our moral responsibilities to posterity in an ethical theory? (shrink)

The purpose of this note is to examine the notion of obligations to future generations, a notion that finds increasing use in discussions of social policies and programs, particularly as concerns population distribution and control and environment control. Thus, it may be claimed, the solution of problems in these areas is not merely a matter of enhancing our own good, improving our own conditions of life, but is also a matter of discharging an obligation to future generations.

Is there a prima facie obligation to produce additional individuals whose lives would be worth living? In his paper ‘Is it Good to Make Happy People?’, Stuart Rachels argues not only that there is, but, also, that precisely as much weight should be assigned to the quality of life that would be enjoyed by such potential persons, if they were to be actualized, as to the quality of life enjoyed by actually existing persons. In response, I shall argue, first, that (...) Rachels’ view is exposed to very serious objections, and secondly, that his arguments in support of his position involve a crucial assumption, which cannot be sustained, concerning the relation between, on the one hand, propositions about good‐making and bad‐making properties, and, on the other, propositions about right‐making and wrong‐making ones. I shall then argue that there is a very plausible position concerning the conditions under which an action can be morally wrong which entails the following asymmetry: there is a prima facie obligation not to bring into existence individuals whose lives are not worth living, but there is no corresponding obligation to create additional individuals whose lives would be worth living. (shrink)

The principle of fairness is a moral principle which states that individuals are under an obligation to contribute towards beneficial cooperative projects. It has been appealed to in arguing that citizens are obligated to pay for public goods that their government supplies. Yet the principle has faced a number of powerful objections, most notably those of Robert Nozick. In responding to some of these objections, proponents of the principle have placed a number of conditions on its application. However, by doing (...) so, they have reduced the number of public goods that the principle can explain obligations to contribute towards, and consequently limited its relevance to questions of political obligation. I argue here that a more permissive version of the principle, with fewer conditions on its application, will perform equally well in responding to Nozick's objections. This opens up the possibility of a theory of political obligation that relies more heavily on the principle of fairness than has previously been thought possible. (shrink)

Conditional promises and threats are speech acts that are used to manipulate other people's behaviour. Studies on human reasoning typically use propositional logic to analyse what people infer from such inducements. While this approach is sufficient to uncover conceptual features of inducements, it fails to explain them. To overcome this limitation, we propose a multilevel analysis integrating motivational, linguistic, deontic, behavioural, and emotional aspects. Commonalities and differences between conditional promises and threats on various levels were examined in two (...) experiments. The first shows that both types of inducements are understood as being complementary on the linguistic level, but not reversible, due to the specific temporal order of their actions. In addition, it gives a first assessment of emotional reactions. The second experiment investigated the novel question of whether complementary promises and threats, despite semantic differences, both imply an obligation to cooperate on the deontic level. The data corroborate this hypothesis, and they support various appraisal-theoretical assumptions on the elicitation of emotions. They also reveal that content affects not only the attribution of emotions, but also the deontic interpretation. (shrink)

Many roles are situated within organizations. The occupants of these roles often confront a dilemma between (i) the occupancy conditions, performance conditions, and functions of the role, as bestowed upon the role by the organization’s decision-making procedures, and (ii) the occupancy conditions, performance conditions, and function that the role should ideally have. This chapter argues that this dilemma should be resolved in favour of (ii). Yet this does not require forgoing role-based considerations in favour of extra-role considerations. Instead, we should (...) conceptualize organizationally specified roles as being one token of an underlying role-type. The underlying role-type provides the organizational role-token with its fundamental occupancy conditions, performance conditions, and function. When the token is a poor instance of its type, organizational role-occupants have obligations—grounded in the fundamental aspects of the role—to challenge this. These are role obligations that call upon one to alter one’s role obligations. (shrink)

The preventative paradigm of preconception care is receiving increasing attention, yet its boundaries remain vague in three respects: temporally; agentially; and instrumentally. Crucially, it remains unclear just who is to be considered a ‘potential parent’, how soon they should take up preconception responsibilities, and how weighty their responsibilities should be.

If group members aim to fulfill a collective obligation, they must act in such a way that the composition of their individual actions amounts to a group action that fulfills the collective obligation. We study a strong sense of joint action in which the members of a group design and then publicly adopt a group plan that coordinates the individual actions of the group members. We characterize the conditions under which a group plan successfully coordinates the group members' individual actions, (...) and study how the public adoption of a plan changes the context in which individual agents make a decision about what to do. (shrink)