Many pressing problems are of the following kind: some collection of actions of multiple people will produce some morally significant outcome (good or bad), but each individual action in the collection seems to make no difference to the outcome. These problems pose theoretical problems (especially for act-consequentialism), and practical problems for agents trying to figure out what they ought to do. Much recent literature on such problems has focused on whether it is possible for each action in such a collection (...) to make such a tiny impact on the world that it makes no expected difference to the outcomes with which we’re concerned. I argue that even if this is impossible, there are cases in which each action makes no difference, not because it has such a tiny effect on the world, but because if it were not performed, a similar action would be. This recognition allows us to connect these problems with discussions of structural injustice. (shrink)

A de minimis risk is defined as a risk that is so small that it may be legitimately ignored when making a decision. While ignoring small risks is common in our day-to-day decision making, attempts to introduce the notion of a de minimis risk into the framework of decision theory have run up against a series of well-known difficulties. In this paper, I will develop an enriched decision theoretic framework that is capable of overcoming two major obstacles to the modelling (...) of de minimis risk. The key move is to introduce, into decision theory, a non-probabilistic conception of risk known as normic risk. (shrink)

Is there any number of people you should save from paralysis rather than saving one person from death? Is there any number of people you should save from a migraine rather than saving one person from death? Many people answer ‘yes’ and ‘no’, respectively. The aim of partially aggregative moral views is to capture and justify combinations of intuitions like these. These views contrast with fully aggregative moral views, which imply that the answer to both questions is ‘yes’, and with (...) non-aggregative moral views, which imply that the answer to both questions is ‘no’. In this paper, I review the most natural and influential ways of developing partially aggregative views and explain the main problems they face. (shrink)

Is there any number of people you should save from paralysis rather than saving one person from death? Is there any number of people you should save from a migraine rather than saving one person from death? Many people answer “yes” and “no,” respectively. The aim of partially aggregative moral views is to capture and justify combinations of intuitions like these. In this article, I develop a risk-based reductio argument that shows that there can be no adequate partially aggregative view. (...) I then argue that the only plausible response to this reductio is to accept a fully aggregative view. (shrink)

The actualism/possibilism debate in ethics is about whether counterfactuals of freedom concerning what an agent would freely do if they were in certain circumstances even partly determines that agent’s obligations. This debate arose from an argument against the coherence of utilitarianism in the deontic logic literature. In this chapter, we first trace the historical origins of this debate and then examine actualism, possibilism, and securitism through the lens of consequentialism. After examining their respective benefits and drawbacks, we argue that, contrary (...) to what has been assumed, actualism and securitism both succumb to the so-called nonratifiability problem. In making this argument, we develop this problem in detail and argue that it’s a much more serious problem than has been appreciated. We conclude by arguing that an alternative view, hybridism, is independently the most plausible position and best fits with the nature of consequentialism, partly in light of avoiding the nonratifiability problem. (shrink)

This paper discusses the inefficacy problem that arises in contexts of “collective harm.‘ These are contexts in which by acting in a certain sort of way, people collectively cause harm, or fail to prevent it, but no individual act of the relevant sort seems to itself make a difference. The inefficacy problem is that if acting in the relevant way won’t make a difference, it’s unclear why it would be wrong. Each individual can argue, “things will be just as bad (...) whether or not I act in this way, so there’s no point in doing otherwise.‘ The goal of this paper is to give an overview of some of the main responses available to the problem and to highlight central issues that arise for each type of response. In the final section, I explain what I take to be the most promising strategy and discuss the form that this strategy should take. (shrink)

One widely used method for allocating health care resources involves the use of cost-effectiveness analysis (CEA) to rank treatments in terms of quality-adjusted life-years (QALYs) gained. CEA has been criticized for discriminating against people with disabilities by valuing their lives less than those of non-disabled people. Avoiding discrimination seems to lead to the ’QALY trap’: we cannot value saving lives equally and still value raising quality of life. This paper reviews existing responses to the QALY trap and argues that all (...) are problematic. Instead, we argue that adopting a moderate form of prioritarianism avoids the QALY trap and disability discrimination. (shrink)

Consider the following claim: given the choice between saving a life and preventing any number of people from temporarily experiencing a mild headache, you should always save the life. Many moral theorists accept this claim. In doing so, they commit themselves to some form of ‘moral absolutism’: the view that there are some moral considerations that cannot be outweighed by any number of lesser moral considerations. In contexts of certainty, it is clear what moral absolutism requires of you. However, what (...) does it require of you when deciding under risk? What ought you to do when there is a chance that, say, you will not succeed in saving the life? In recent years, various critics have argued that moral absolutism cannot satisfactorily deal with risk and should, therefore, be abandoned. In this paper, we show that moral absolutism can answer its critics by drawing on—of all things—orthodox expected utility theory. (shrink)

This paper presents a new puzzle for limited aggregation. Unlike other recent puzzles, this one arises independently of the issue of rational aversion to risk. Some possible responses are laid out and explored.

Greater public awareness of the occurrence of sexual assault has led to the creation of mobile phone apps designed to facilitate consent between sexual partners. These apps exhibit serious practical shortcomings in realistic contexts; however, in this paper I consider the hypothetical case in which these practical shortcomings are absent. The prospect of this viable consent app creates an interesting challenge for consequentialism – one that is comparable to the objection that the theory justifies killing innocent persons to prevent large (...) numbers of less serious harms like experiencing brief, painful headaches. I outline and reject the most straightforward way for consequentialists to address this challenge, and I argue that the empirical calculations at stake reveal something rarely appreciated: consequentialists ought to sometimes favour reinforcing deontological constraints in common-sense morality rather than seeking to undermine them. (shrink)

It has been suggested that understanding our obligations to address large-scale moral problems such as global poverty and the threat of severe climate change as fundamentally collective can allow us to insist that a great deal must be done about these problems while denying that there are very demanding obligations, applying to either individuals or collectives, to contribute to addressing them. I argue that this strategy for limiting demandingness fails because those who endorse collective obligations to address large-scale moral problems (...) have no grounds for denying that the relevant collectives are obligated to do what is impartially best. Specifically, I argue that appeals to the claim that collective obligations to do what is impartially best would be objectionably demanding cannot succeed, for two reasons. The first is that demandingness complaints cannot be aggregated across the individual members of a collective. And the second is that demandingness complaints cannot plausibly be asserted on behalf of collectives themselves. I conclude by suggesting some reasons to think that collective obligations to address large-scale problems will tend to imply demanding individual obligations. (shrink)

Joshua Greene and Peter Singer argue, on the basis of empirical evidence, that deontological moral judgments result from emotional reactions while dispassionate reasoning leads to consequentialist judgments. Given that there are good reasons to doubt these emotionally driven intuitions, they argue that we should reject Kantian ethics. I argue that the evidence does not support the claim that consequentialism is inherently more reason-based or less emotion-based than Kantian ethics. This is partly because the experiments employ a functional definition of ‘deontological’ (...) that is so broad as to include any non-consequentialist theory, including virtue ethics, divine command theory, and even rule-utilitarianism. Thus the experiments failed to capture the reasons behind the judgments. Also, the results of the experiments are partly due to the extensive use of moral dilemmas like the footbridge version of the trolley scenario. The options in these dilemmas involve different levels of moral thinking. The consequ.. (shrink)

John Harsanyi has offered an argument grounded in Bayesian decision theory that purports to show that John Rawls's original position analysis leads directly to utilitarian conclusions. After explaining why a prominent Rawlsian line of response to Harsanyi's argument fails, I argue that a seemingly innocuous Bayesian rationality assumption, the continuity axiom, is at the heart of a fundamental disagreement between Harsanyi and Rawls. The most natural way for a Rawlsian to respond to Harsanyi's line of analysis, I argue, is to (...) reject continuity. I then argue that this Rawlsian response fails as a defence of the difference principle, and I raise some concerns about whether it makes sense to posit the discontinuities needed to support the other elements of Rawls's view, although I suggest that Rawls may be able to invoke discontinuity to vindicate part of his first principle of justice. (shrink)

Can all goods or bads be broken down into smaller and smaller pieces? Can all goods or bads be added together with some other good or bad to get a larger amount? Further, how does moral significance track the disaggregation and the aggregation of moral goods and bads? In Part 1, I examine the limits placed on aggregation by moderate deontological moral theories. This paper focuses in particular on the work of Judith Thomson and T.M. Scanlon as well as on (...) some of my own past work on the question of aggregation in the context of overriding rights. In Part 2, I examine consequentialist criticism that harms and benefits can be broken down into smaller pieces than the deontological theory allows and the argument that the moderate deontological view is too permissive since it allows aggregation of benefits within a single person's life. In Part 3 I suggest how a moderate deontological moral theory might respond to the criticisms. I cast my answer in terms of the existence of lumpy goods and bads. I argue that consequentialist critics of deontology are wrong to insist that all goods and bads can be disaggregated and aggregated at will. Instead, I offer the suggestion that most, or many, goods and bads come in morally significant lumps. That said, it will not always be obvious what those lumps are. Determining the texture of moral value is a substantive project in normative ethics. All I have hoped to do in this paper is suggest that two standard positions on how to group moral value are mistaken and give hope that we need not adopt one of the two. Part 4 of the paper responds to an objection and sets the stage for further work in value theory. (shrink)

In this thesis, I discuss the aggregation problem for T. M. Scanlon’s “contractualism”. I argue that Scanlonian contractualists have the following two options when it comes to the aggregation problem. First, they can choose to limit aggregation directly via a specific version of the Relevance View, “Sequential Claims-Matching”. Second, Scanlonian contractualists can adopt a so-called “mixed solution” of which I propose a specific version. My mixed solution does not limit aggregation. Rather, it either avoids some of the counterintuitive results in (...) certain cases, or at least makes these same results look a lot less counterintuitive by putting them into perspective thanks to a plausible plurality of precisely specified values. The stakes between these two options are as follows. The first option justifies Scanlon’s intuition in one vs. many cases of which his “World Cup Case” is one example, but it comes at the cost of a seemingly quite limited range of application: any version of the Relevance View only works in cases in which we have no more than two groups of competing claimants. The second option has the exact opposite implications: my mixed solution cannot justify Scanlon’s intuition in one vs. many cases, but it could be applied to any case with any number of groups of competing claimants. In this choice between pre-theoretical intuition and feasibility, I would urge Scanlonian contractualists to choose feasibility. (shrink)

This paper discusses the ethical implications of perverse incentives with regard to autonomous driving. We define perverse incentives as a feature of an action, technology, or social policy that invites behavior which negates the primary goal of the actors initiating the action, introducing a certain technology, or implementing a social policy. As a special form of means-end-irrationality, perverse incentives are to be avoided from a prudential standpoint, as they prove to be directly self-defeating: They are not just a form of (...) unintended side effect that must be balanced against the main goal or value to be realized by an action, technology, or policy. Instead, they directly cause the primary goals of the actors—i.e., the goals that they ultimately pursue with the action, technology, or policy—to be “worse achieved”. In this paper, we elaborate on this definition and distinguish three ideal-typical phases of adverse incentives, where only in the last one the threshold for a perverse incentive is crossed. In addition, we discuss different possible relevant actors and their goals in implementing autonomous vehicles. We conclude that even if some actors do not pursue traffic safety as their primary goal, as part of a responsibility network they incur the responsibility to act on the common primary goal of the network, which we argue to be traffic safety. (shrink)

This thesis discusses the possibility of limited moral trade-offs between different people’s welfare. In chapter 2, I introduce the two central limited trade-off conditions. First, according to minimal infinite superiority, significantly benefiting one person matters more than slightly benefiting each of any number of better-off people. Second, according to minimal finite superiority, significantly benefiting many people matters more than slightly benefiting one person. I consider both axiological and deontic interpretations of these conditions. However, I explain why none of the simple (...) classic moral principles—the simple total and the maximin principles—satisfy both conditions. Furthermore, in chapter 3, I strengthen several proved impossibility results according to which no moral theory satisfies weak interpretations of these central trade-off conditions and several other seemingly plausible minimal conditions. I show that giving up structural axiological and deontic conditions is not a satisfactory solution to these paradoxes. In chapter 4, I discuss the modification of a background assumption of these impossibility results on the measurement of welfare. I show that, given a modification that allows for lexicographically ordered welfare components, a total principle can satisfy all the conditions of the impossibility results. However, I argue that such a modification is not entirely satisfactory because it does not apply in certain instances of the paradoxes. In chapter 5, I discuss a further weakening of minimal infinite superiority. However, I show that a suggested possibility result based on this modification is not valid and that further moral conditions, such as minimal finite superiority, need to be modified. Moreover, I argue that these modified conditions and the principle suggested in the possibility proof—a minimax complaint principle—do not capture the basic idea of the two central limited trade-off conditions sufficiently well. In chapter 6, I argue that other principles suggested for the task—the total claim principles—share the same fate as the simple total principles or the minimax complaint principle. In chapter 7, I propose new principles that take their structural roots from voting theory. I show that, in contrast to the other principles discussed, these principles give plausible verdicts where the other principles failed. Finally, in chapter 8, I consider possible objections levelled against this proposal, and I suggest solutions and avenues for future research. (shrink)

In recent years, tech evangelists have made headlines predicting that in the future manual driving will be outlawed. This essay will investigate the question whether a ban of human driven cars can be defended on moral grounds in a future scenario in which autonomous cars are going to be significantly safer than manually driven cars. This article will argue that in such a future scenario manually driven cars, for moral reasons, indeed should be banned from participating in regular traffic. Since (...) the moral argument for outlawing manually driven cars will likely be met by resistance by car-aficionados, in the final part of the paper, we are devising a proposal for reconciling the strong moral case for a ban of manually driven cars with the widespread fondness of manual driving. (shrink)

This essay sketches out what a utilitarian should support when considering global warming along with what measures can be recommended to political leaders for utilitarian reasons. If we estimate the utility of the great advantages that any ambitious climate policy might create in the name of poverty reduction in the present, I will show how a decision can be made in favor of a vigorous climate policy based on such estimates. My argument is independent of the truth of the claims (...) of climate sceptics. Until now, the debate has neglected the double effects of a vigorous climate policy that not only avoids risks of damages but also creates utility. In conclusion, three strategies of a climate policy legitimized by utilitarianism will be introduced: (1) Utilitarianism favors global emissions trading in comparison with a global CO2 tax. (2) Utilitarianism calls for this trade to be introduced while, at the same time, investments in renewable energies should be increased. (3) Furthermore, utilitarianism favors a policy that aims to slow down the rate of population growth. (shrink)