Overview of fundamental work in deontic logic.

This is a prepublication version of my book Objects and Attitudes (please cite the pbished version!). The book develops a novel semantics of attitude reports, modal sentences, and quotation based on the view that sentences semantically act as predicates of various attitudinal and modal objects, entities like claims, requests, promises, obligations, and permissions, rather than standing for abstract propositions playing the role of objects. The approach develops truthmaker semantics for attitudinal and modal objects and has a wide range of applications (...) to issues in philosophy of language, semantics, and philosophy of mind. (shrink)

Donald Davidson has prepared a new edition of his classic 1980 collection of Essays on Actions and Events, including two additional essays. In this seminal investigation of the nature of human action, Davidson argues for an ontology which includes events along with persons and other objects. Certain events are identified and explained as actions when they are viewed as caused and rationalized by reasons; these same events, when described in physical, biological, or physiological terms, may be explained by appeal to (...) natural laws. The mental and the physical thus constitute irreducibly discrete ways of explaining and understanding events and their causal relations. -/- Among the topics discussed are: freedom to act; weakness of the will; the logical form of talk about actions, intentions, and causality; the logic of practical reasoning; Hume's theory of the indirect passions; and the nature and limits of decision theory. The introduction, cross-references, and appendices emphasize the relations between the essays and explain how Davidson's views have developed. -/- . (shrink)

MEANING POSTULATES REINSTATED If I am right in agreeing with Cresswell that the "logicarrlexicaT distinction is one of degree rather than one of kind, that in turn impugns the distinction between the official truth-rules that define logical ...

Many philosophers claim that it cannot be the case that a person ought to perform an action if this person cannot perform this action. However, most of these philosophers do not give arguments for the truth of this claim. In this paper, I argue that it is plausible to interpret this claim in such a way that it is entailed by the claim that there cannot be a reason for a person to perform an action if it is impossible that (...) this person will perform this action. I then give three arguments for the truth of the latter claim, which are also arguments for the truth of the former claim as I interpret it. (shrink)

This paper develops a compositional, type-driven constraint semantic theory for a fragment of the language of subjective uncertainty. In the particular application explored here, the interpretation function of constraint semantics yields not propositions but constraints on credal states as the semantic values of declarative sentences. Constraints are richer than propositions in that constraints can straightforwardly represent assessments of the probability that the world is one way rather than another. The richness of constraints helps us model communicative acts in essentially the (...) same way that we model agents’ credences. Moreover, supplementing familiar truth-conditional theories of epistemic modals with constraint semantics helps capture contrasts between strong necessity and possibility modals, on the one hand, and weak necessity modals, on the other. (shrink)

Possible worlds semantics faces a range of difficulties for at least certain types of modals, especially deontic modals with their distinction between heavy and light permissions and obligations. This paper outlines a new semantics of modals that aims to overcome some of those difficulties. The semantics is based on an a novel ontology of modal objects, entities like obligations, permissions, needs, as well as epistemic states, abilities, and essences. Moreover, it is based on truthmaking, in the sense of Fine’s recent (...) truthmaker semantics. (shrink)

This paper presents a moral philosophical account of free riding, specifying the conditions under which failing to pay for nonrival goods is unfair. These conditions do not include the voluntary acceptance of the goods: this controversial claim is supported on the strength of a characterization of the kind of unfairness displayed in paradigm cases of free riding. Thus a "Principle of Fairness" can potentially serve as a foundation for political obligations. The paper also discusses the relation between its moral philosophical (...) account of free riding, and a game theoretic or economic account. (shrink)

An attractive approach to the semantic paradoxes holds that cases of semantic pathology give rise to indeterminacy. What attitude should a rational agent have toward a proposition that it takes to be indeterminate in this sense? Orthodoxy holds that rationality requires that an agent disbelieve such a proposition. I argue that a rational agent should be such that it is indeterminate whether it believes the proposition in question. For rational agents, indeterminacy in the objects of their attitudes will filter up (...) to the attitudes themselves. (shrink)

Presenting the first comprehensive, in-depth study of hyperintensionality, this book equips readers with the basic tools needed to appreciate some of current and future debates in the philosophy of language, semantics, and metaphysics. After introducing and explaining the major approaches to hyperintensionality found in the literature, the book tackles its systematic connections to normativity and offers some contributions to the current debates. The book offers undergraduate and graduate students an essential introduction to the topic, while also helping professionals in related (...) fields get up to speed on open research-level problems. (shrink)

Since at least the 1960s, deontic logicians and ethicists have worried about whether there can be normative systems that allow conflicting obligations. Surprisingly, however, little direct attention has been paid to questions about how we may reason with conflicting obligations. In this paper, I present a problem for making sense of reasoning with conflicting obligations and argue that no deontic logic can solve this problem. I then develop an account of reasoning based on the popular idea in ethics that reasons (...) explain obligations and show that it solves this problem. (shrink)

Conceptual limitations restrict our epistemic options. One cannot believe, disbelieve, or doubt what one cannot grasp. I show how, even granting an epistemic ought-implies-can principle, such restrictions might lead to epistemic dilemmas: situations where each of one’s options violates some epistemic requirement. An alternative reaction would be to take epistemic norms to be sensitive to one’s options in ways that ensure dilemmas never arise. I propose, on behalf of the dilemmist, that we treat puzzlement as a kind of epistemic residue, (...) roughly analogous with guilt, appropriate only when one has violated an epistemic requirement. Sometimes, in bumping up against the limits of one’s concepts, it is appropriate to be puzzled no matter what one believes. Puzzlement can thus play the same role in an epistemic dilemmist’s theory that guilt plays in the theories of many moral dilemmists. (shrink)

A moral dilemma is a situation in which an agent ought to do each of two actions, Both of which he cannot do. If there are genuine moral dilemmas, The ethical theorist is presented with a problem: he must reject several very plausible principles of standard deontic logic. The main reasons usually given to show that there are moral dilemmas are examined, And it is argued that they are not sufficient. Several positive arguments are then presented, Arguments which try to (...) show that an adequate moral theory must rule out the possibility of genuine dilemmas. (shrink)

One of the popular albeit controversial ideas in the last century of moral philosophy is that what we ought to do is explained by our reasons. And one of the central features of reasons that accounts for their popularity among normative theorists is that they can conflict. But I argue that the fact that reasons conflict actually also poses two closely related problems for this popular idea in moral philosophy. The first problem is a generalization of a problem in deontic (...) logic concerning the existence of conflicting obligations. The second problem arises from a tension between the fact that reasons can conflict and a model of how reasons explain ‘ought’s that has been widely accepted. Having presented each of these problems, I develop a unified solution to them that is informed by results in both ethics and deontic logic. An important implication of this solution is that we must distinguish between derivative and nonderivative reasons and revise our conception how it is that reasons explain ‘ought’s. (shrink)

Moral obligation and permissibility are usually thought to be interdefinable. Following the pattern of the duality definitions of necessity and possibility, we have that something’s being permissible could be defined as its not being obligatory to not do it. And that something’s being obligatory could be defined as its not being permissible to not do it. In this paper, I argue that neither direction of this alleged interdefinability works. Roughly, the problem is that a claim that some act is obligatory (...) or permissible entails that there is a moral law, whereas a negative claim that some act is not obligatory or not permissible does not. Nevertheless, one direction of the interdefinability can potentially be salvaged. I argue that, if we do not require the conceptual possibility of moral dilemmas, then there is a way to plausibly define obligation in terms of permissibility. I conclude that permissibility is the only feasible deontic primitive. (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)

Two groups of agents, G1 and G2, face a *moral conflict* if G1 has a moral obligation and G2 has a moral obligation, such that these obligations cannot both be fulfilled. We study moral conflicts using a multi-agent deontic logic devised to represent reasoning about sentences like "In the interest of group F of agents, group G of agents ought to see to it that phi". We provide a formal language and a consequentialist semantics. An illustration of our semantics with (...) an analysis of the Prisoner’s Dilemma follows. Next, necessary and sufficient conditions are given for (1) the possibility that a single group of agents faces a moral conflict, for (2) the possibility that two groups of agents face a moral conflict within a single moral code, and for (3) the possibility that two groups of agents face a moral conflict. (shrink)

In his original semantics for counterfactuals, David Lewis presupposed that the ordering of worlds relevant to the evaluation of a counterfactual admitted no incomparability between worlds. He later came to abandon this assumption. But the approach to incomparability he endorsed makes counterintuitive predictions about a class of examples circumscribed in this paper. The same underlying problem is present in the theories of modals and conditionals developed by Bas van Fraassen, Frank Veltman, and Angelika Kratzer. I show how to reformulate all (...) these theories in terms of lower bounds on partial preorders, conceived of as maximal antichains, and I show that treating lower bounds as cutsets does strictly better at capturing our intuitions about the semantics of modals, counterfactuals, and deontic conditionals. (shrink)

A standard principle in ethics is that moral obligation entails ability, or that “ought implies can”. A strong case has been made that this principle is not well motivated in moral psychology. This paper presents an analogous case against the theoretical motivation for the principle. The principle is in tension with several foundational areas of ethical theorizing, including research on apologies, excuses, promises, moral dilemmas, moral language, disability, and moral agency. Across each of these areas, accepting the principle that obligation (...) entails ability creates a theoretical problem that is more easily solved by rejecting it rather than accepting it. I conclude that the motivation for the principle is weak and that “ought implies can” should be rejected in ethics on theoretical grounds. (shrink)

On the face of it, normative conflicts are commonplace. Yet standard deontic logic declares them to be logically impossible. That prompts the question, What are the proper principles of normative reasoning if such conflicts are possible? This paper examines several alternatives that have been proposed for a logic of 'ought' that can accommodate normative conflicts, and finds all of them unsatisfactory as measured against three criteria of adequacy. It then introduces a new logic that does meet all three criteria, and (...) so allows for the possibility of genuine normative conflicts. (shrink)

Conditional pacifism is the view that war is morally justified if and only if it satisfies the condition of not causing serious harm or death to innocent persons. Modern war cannot satisfy this condition, and is thus always unjustified. The main response to this position is that the moral presumption against harming or killing innocents is overridden in certain cases by the moral presumption against allowing innocents to be harmed or killed. That is, as harmful as modern war is, it (...) can be morally justified as a lesser evil when it alone can prevent great harm to innocents. This paper proposes that extreme cases in which only war can prevent great harm to innocents may be morally tragic. In some cases it may be both wrong to wage war to prevent great harm and wrong to fail to prevent that great harm. (shrink)

We present the inconsistency-adaptive deontic logic DP r , a nonmonotonic logic for dealing with conflicts between normative statements. On the one hand, this logic does not lead to explosion in view of normative conflicts such as O A ∧ O ∼A, O A ∧ P ∼A or even O A ∧ ∼O A. On the other hand, DP r still verifies all intuitively reliable inferences valid in Standard Deontic Logic (SDL). DP r interprets a given premise set ‘as normally (...) as possible’ with respect to SDL. Whereas some SDL-rules are verified unconditionally by DP r , others are verified conditionally. The latter are applicable unless they rely on formulas that turn out to behave inconsistently in view of the premises. This dynamic process is mirrored by the proof theory of DP r. (shrink)

A number of Christian theologians and philosophers have been critical of overly moralizing approaches to the doctrine of sin, but nearly all Christian thinkers maintain that moral fault is necessary or sufficient for sin to obtain. Call this the “Moral Consensus.” I begin by clarifying the relevance of impurities to the biblical cataloguing of sins. I then present four extensional problems for the Moral Consensus on sin, based on the biblical catalogue of sins: (1) moral over-demandingness, (2) agential unfairness, (3) (...) moral repugnance, and (4) moral atrocity. Next, I survey several partial solutions to these problems, suggested by the recent philosophical literature. Then I evaluate two largely unexplored solutions: (a) genuine sin dilemmas and (b) defeasible sinfulness. I argue that (a) creates more problems than it solves and that, while (b) is well-motivated and solves or eases each of the above problems, (b) leaves many biblical ordinances about sin morally misleading, creating (5) a pedagogical problem of evil. I conclude by arguing that (5) places hefty explanatory burdens on those who would appeal to (b) to resolve the four extensional problems discussed in this paper. So Christian thinkers may need to consider a more radical separation of sin and moral fault. (shrink)

A type of transcendental argument for libertarian free will maintains that if acting freely requires the availability of alternative possibilities, and determinism holds, then one is not justified in asserting that there is no free will. More precisely: if an agent A is to be justified in asserting a proposition P (e.g. "there is no free will"), then A must also be able to assert not-P. Thus, if A is unable to assert not-P, due to determinism, then A is not (...) justified in asserting P. While such arguments often appeal to principles with wide appeal, such as the principle that ‘ought’ implies ‘can’, they also require a commitment to principles that seem far less compelling, e.g. the principle that ‘ought’ implies ‘able not to’ or the principle that having an obligation entails being responsible. It is argued here that these further principles are dubious, and that it will be difficult to construct a valid transcendental argument without them. (shrink)

This paper develops a typology of moral problems in business. The cross-classification of two fundamental dimensions of ethical conduct: judgment and motivation, is employed to distinguish four types of moral problems: genuine dilemmas, compliance problems, moral laxity, and no-problem problems. Actual cases are brought to illustrate each type of problem, and corresponding coping strategies are presented. The paper highlights the need to design a dynamic strategy that will take into account the relationships among different types of ethical problems. In its (...) capacities as both an analytical tool for identifying and clarifying an ethical problem and a strategic tool for handling it, the typology has direct implications for developing ethical awareness, assigning accountability, and unfolding typical rationalizations in business activity. (shrink)

“No one can serve two masters.” This Bible quotation highlights an irreducible contradiction, which echoes numerous organizational settings. This article considers the under-explored ethical implications of paradoxical injunctions created by such a contradiction at the managerial level. Contradictory organizational constraints turn into paradoxant systems , where the organization structurally settles paradoxical injunctions which challenge managerial ethics in practice. We then ask what managerial responsibility means in such contexts and find that managers have then to reshape their practice as a situated (...) construction through constant mediation between different “masters” and bricolage (i.e., tinkering with concepts). An ethnographic case study of an anti-money laundering service in an investment bank illuminates this phenomenon from a practice perspective. The possibility to enact an actual ethical practice within the contradictory organization relies on a new role of the manager. This implies drawing on an approach of responsible management as an enactment of ethics in practice which is situated within the framework of a new conception of both the organization, as a structurally “paradoxant system,” and the manager as a mediator in charge of enacting coherence. (shrink)

In Capitalism, Alienation and Critique Asger Sørensen offers a wide-ranging argument for the classical Critical Theory of the Frankfurt School, thus endorsing the dialectical approach of the original founders (Horkheimer, Adorno, Marcuse) and criticizing suggested revisions of later generations (Habermas, Honneth). Being situated within the horizon of the late 20th century Cultural Marxism, the main issue is the critique of capitalism, emphasizing experiences of injustice, ideology and alienation, and in particular exploring two fundamental subject matters within this horizon, namely economy (...) and dialectics. Apart from in-depth discussions of classical political economy and Hegelian dialectics, the explorative and inclusive argument also takes issues with Émile Durkheim’s theory of value, the general economy of Georges Bataille and the dialectics of Mao Zedong. -/- - See below External Links to the book's homepage at the publisher Brill and to the Introduction. - See also External Links to a Youtubevideo from a seminar on the book in Belgrade, November 2019 and two Author Meet Critics sections from 2020 and 2021. (shrink)

The set with the following members is inconsistent: F-Lesson: A person can be blameworthy for performing an action even though she cannot refrain from performing it. Equivalence: ‘Ought not’ is equivalent to ‘impermissible.’ OIC: ‘Ought’ implies ‘can’ and ‘ought not’ implies ‘can refrain from.’ BRI: Necessarily, one is morally blameworthy for doing something only if it is overall morally impermissible for one to do it. Since Equivalence seems unassailable, one can escape the inconsistency by renouncing any one of the other (...) members. I first argue against BRI and then motivate a replacement for it that ties blameworthiness to belief in impermissibility. (shrink)

Recently a well-known magazine published an article entitled ‘Moral Specialist.’ This article recounts the activities of Russell McIntyre, described by the authors as a theologian and philosopher who specializes in bioethics. McIntyre is routinely consulted by physicians for help in solving ethical problems. He is asked for moral advice on such matters as abortion, euthanasia, and sterilization for teenagers. McIntyre even wears an electronic ‘beeper’ so that when untimely moral quandaries arise he can easily be reached. McIntyre says that ultimately (...) such moral decisions should be made by the people involved — the physician, the patient, and the family. However, he claims that there are still many gray areas in bioethics ‘where it is best to call in an expert for consultation.’. (shrink)

This paper develops the first deontic logic in the context of paraconsistent logics.

Not so long ago it was fashionable to claim that it is not the moral philosopher's business to say what things are good or what actions we should perform. This view is succinctly stated by A. J. Ayer:There is a distinction, which is not always sufficiently marked, between the activity of a moralist, who sets out to elaborate a moral code, or to encourage its observance, and that of a moral philosopher, whose concern is not primarily to make moral judgments (...) but to analyse their nature.On the other hand, in direct opposition to this, recently many philosophers actively moralize, in the sense that they argue for substantive normative ethical positions. In doing this they tend to assume but not to explore seriously two views: that the notion of moral expertise is unproblematic, and that moral philosophers in particular are moral experts. My aim in this paper is to promote the exploration of these questions. is logically prior to. Nevertheless I begin with discussing ; for puzzles about expertise in morals naturally emerge when one examines the credentials of candidates for the job. (shrink)

In this paper, using Mark Schroeder’s (2008a) expressivist semantic framework for normative language as a case study, I will identify difficulties that even an expressivist semantic theory capable of addressing the Frege-Geach problem will encounter in handling the logical possibility of moral dilemmas. To this end, I will draw on a classical puzzle formulated by McConnell (1978) that the logical possibility of moral dilemmas conflicts with some of the prima facie plausible axioms of the standard deontic logic, which include obligation (...) implies permission. On the tentative assumption that proponents of ethical expressivism should be generally committed to securing the logical possibility of moral dilemmas in their semantic theories, I will explore whether and how expressivists can successfully invalidate obligation implies permission within the framework developed by Schroeder. The case study eventually reveals that this can indeed be a hard task for expressivists. Generalizing from the case study, I will suggest that the source of the difficulty ultimately lies in the mentalist assumption of the expressivist semantic project that the logico-semantic relations exhibited by normative sentences should be modeled in terms of the psychological attitudes that speakers express by uttering them. My final goal will be to show that the difficulty expressivists face in dealing with the logical possibility of moral dilemmas is a reflection of the more general problem that their commitment to the mentalist assumption prevents them from flexibly adopting or dropping axioms in their semantic theories to get the right technical results. (shrink)

In this paper, we investigate the ‘ought implies can’ thesis, focusing on explanations and interpretations of OIC, with a view to clarifying its uses and relevance to legal philosophy. We first review various issues concerning the semantics and pragmatics of OIC; then we consider how OIC may be incorporated in Hartian and Kelsenian theories of the law. Along the way we also propose a taxonomy of OIC-related claims.

In my response, I initially defend my preference for classical Critical Theory, emphasizing its continued relevance in capitalist modernity, stressing that the epistemological approach does not imply dogmatism with regards to scientific theory or Historical Materialism, just as it does not imply closure with regards to political democracy. When it comes to the dialectics of the classics, I also defend an epistemological approach, arguing that the dialectics aiming for truth implies critique and negativity. However, confronted with the duality of transcendental (...) ideas and historical relativity, I express my confidence in human intuition. Following Hegel, determinate negation must sublate the intuitively conceived universality to a new conception that contains the result of the negation. Finally, I do not see how the conceptual aporias of general economy can be solved by the current political degrowth project. Still, politics is what we need more of, namely social democracy. (shrink)

Haji argues that determinism threatens deontic morality, not via a threat to moral responsibility, but directly, because of the principle that ‘ought’ implies ‘can’. Haji’s argument requires not only that we embrace an ‘ought’ implies ‘can’ principle, but also that we adopt the principle that ‘ought’ implies ‘able not to’. I argue that we have little reason to adopt the latter principle, and examine whether deontic morality might be destroyed on the basis of the more commonly embraced ‘ought’ implies ‘can’ (...) principle alone. I argue that despite what look like initially compelling reasons why we might suppose that this weaker conclusion is similarly destructive to deontic morality, we actually have good reason to doubt that it has any practical relevance for moral deliberation at all. (shrink)

The principle of fairness holds that individuals (beneficiaries) who benefit from a cooperative scheme of others (cooperators) have an obligation to do their share in return for their benefit. The original proponent of this principle, H. L. A. Hart suggests ‘mutuality of restrictions’ as a moral basis because it is fair to mutually restrict the freedom of both beneficiaries and cooperators; so called the fairness obligation. This paper explores ‘mutuality of restrictions’, which is interpreted as a right-based and an equality-based (...) justification of the fairness obligation. It is not argued whether both ways of justifying the obligation makes a success, but that they are in need of presupposing that there is a duty for beneficiaries to do their share in return for their benefit. This suggests turning to a duty-based justification of the fairness obligation. (shrink)

Standard dyadic deontic logic (as well as standard deontic logic) has recently come under attack by moral philosophers who maintain that the axioms of standard dyadic deontic logic are biased against moral theories which generate moral conflicts. Since moral theories which generate conflicts are at least logically tenable, it is argued, standard dyadic deontic logic should be modified so that the set of logically possible moral theories includes those which generate such conflicts. I argue that (1) there are only certain (...) types of moral conflicts which are interesting, and which have worried moral theorists, (2) the modification of standard dyadic deontic logic along the lines suggested by those who defend the possibility of moral conflicts makes possible only uninteresting types of moral conflicts, and (3) the general strategy of piecemeal modification standard dyadic deontic logic is misguided: the possibility of interesting moral conflicts cannot be achieved in that way. (shrink)

A moral dilemma is a situation where an agent’s obligations conflict. Debate in this area focuses on the question of whether genuine moral dilemmas exist. This question involves considering not only the nature and significance of dilemmas, but also the connections between dilemmas, the logic of obligation and moral emotions.

Neste artigo fazemos uma discussão conceitual acerca da ferramenta de escolha por nós apresentada no trabalho “Solving Normative Conflicts using Preference Relations”, isto é, explicitamos a racionalidade subjacente a tal ferramenta, bem como as consequências práticas de sua aceitação.

Moral dilemmas are a feature of moral life that make us vulnerable to tragic failures. But while all moral dilemmas involve unavoidable moral failure and leave a moral remainder, they do not all involve dirty hands. Recognizing that Thomas Nagel’s ideas about the availability of both agent-relative and agent-neutral perspectives from which to ask moral questions formed the backdrop to Michael Walzer’s work on dirty hands fifty years ago, this paper tries to explain why, when we must take both perspectives—thus (...) being an agent who meanwhile considers overriding the responsibilities of our particular agency—we risk dirtying our hands. The answer to a question about what ought to happen (as judged from an agent-neutral perspective) and the answer to a question about what one ought to do (as judged from an agent-relative perspective) are utterly incomparable because they are answers to two different questions, making any all-things-considered decision, when these answers conflict, unintelligible. If we decide to act on an agent-neutral reason to violate a conflicting agent-relative requirement, then despite our not having clearly made a wrong decision, our chosen action may be unthinkable. It is with the dirt of acting as an administrator of what ought to happen—as a kind of non-agent, when agency is urgently called for—that we do the unthinkable. The paper concludes that this combination of unintelligibility and unthinkability, when brought on by being an agent who steps outside of our own agency, is the mark of a dirty hands dilemma. (shrink)