According to the Asymmetry, it is wrong to bring a miserable child into existence but permissible not to bring a happy child into existence. When it comes to procreation, we don’t have complete procreative liberty. But we do have some discretion. The Asymmetry seems highly intuitive. But a plausible account of the Asymmetry has been surprisingly difficult to provide, and it may well be that most moral philosophers – or at least most consequentialists – think that all reasonable efforts to (...) provide such an account have by now been exhausted. In this paper, I argue that, despite the difficulties, the Asymmetry is too important to be set aside. I also note a handful of accounts of the Asymmetry that have been proposed and why they fail. It seems, for example, that it will not do to say that some people matter morally and others don’t, or that a person matters morally in some worlds but not others. My own conclusion is that, while we are bound to say all people matter morally – you, me and the merely possible – we are not bound to say that all their losses– or all ours– matter morally. We can instead distinguish between morally significant and insignificant losses, with the distinction between the two being a matter of where the loss is incurred in relation to the person who incurs it. This way of looking at things – which I call Variabilism– provides the basis for a plausible account of the Asymmetry. The availability of such an account suggests, I think, that our prospects for rescuing the Asymmetry are bright. (shrink)

The Asymmetry consists of two claims. (A) That a possible person's life would be abjectly miserable –less than worth living – counts against bringing that person into existence. But (B) that a distinct possible person's life would be worth living or even well worth living does not count in favour of bringing that person into existence. In recent years, the view that the two halves of the Asymmetry are jointly untenable has become increasingly entrenched. If we say all persons matter (...) morally whether they exist or not and on that basis try to explain the first half of the Asymmetry, we lose the second half of the Asymmetry. If we say that some persons do not matter morally and some do and on that basis try to explain the second half of the Asymmetry, we lose the first half of the Asymmetry – or else find ourselves with a principle that is either inconsistent or otherwise deeply troubled in some way that has nothing to do with the content of the Asymmetry itself. In this article, I propose an alternative approach to the Asymmetry which I will call Variabilism. By understanding each and every person, whether existing or not, to matter morally but variably– such that the moral significance of any loss incurred by any person is considered to depend, not on who incurs that loss and whether that person matters morally, but rather on where that loss is incurred in relation to the person who incurs it – we can both nicely ground the two halves of the Asymmetry and avoid the conceptual difficulties that have plagued competing approaches. (shrink)

Sparrow (2022) argues persuasively that prenatal gene editing (PGE) will be identity-affecting in the foreseeable future. While he focuses on genetic enhancement, his argument also applies to genet...

The wrongful disability problem arises whenever a disability-causing, and therefore (presumptively) wrongful, procreative act is a necessary condition for the existence of a person whose life is otherwise worth living. It is a problem because it seems to involve no harm, and therefore no wrongful treatment, vis-à-vis that person. This essay defends the nonconsequentialist, rights-based, account of the wrong-making features of wrongful disability. It distinguishes between the person-affecting restriction, roughly the idea that wrongdoing is always the wronging of some person, (...) and the harm principle, the idea that all wrongings are harmings. It argues, first, that the harm principle should be rejected, in light of offending intuitions in salient examples. Rejection of the harm principle is not only independently plausible, but also paves the way for a nonconsequentialist diagnosis of wrongful disability. This diagnosis conceives of wrongdoing as a failure to express adequate respect for the humanity or personhood inherent in the person created. The paper defends a theory of humanity-respecting rights that accommodates plausible intuitions about satisficing and fairness, without resorting to consequentialist premises that lead to well-known impossibility results and paradoxes. (shrink)

Arrhenius’s impossibility theorems purport to demonstrate that no population axiology can satisfy each of a small number of intuitively compelling adequacy conditions. However, it has recently been pointed out that each theorem depends on a dubious assumption: Finite Fine-Grainedness. This assumption states that there exists a finite sequence of slight welfare differences between any two welfare levels. Denying Finite Fine-Grainedness makes room for a lexical population axiology which satisfies all of the compelling adequacy conditions in each theorem. Therefore, Arrhenius’s theorems (...) fail to prove that there is no satisfactory population axiology. In this paper, I argue that Arrhenius’s theorems can be repurposed. Since all of our population-affecting actions have a non-zero probability of bringing about more than one distinct population, it is population prospect axiologies that are of practical relevance, and amended versions of Arrhenius’s theorems demonstrate that there is no satisfactory population prospect axiology. These impossibility theorems do not depend on Finite Fine-Grainedness, so lexical views do not escape them. (shrink)

The asymmetry is the view in population ethics that, while we ought to avoid creating additional bad lives, there is no requirement to create additional good ones. The question is how to embed this intuitively compelling view in a more complete normative theory, and in particular one that treats uncertainty in a plausible way. While arguing against existing approaches, I present new and general principles for thinking about welfarist choice under uncertainty. Together, these reduce arbitrary choices to uncertainty-free ones, regardless (...) of how the latter should be made. I illustrate these principles by developing two theories of the asymmetry, reflecting different views about the non-identity problem. In doing so, I clarify some other major choice-points, presenting new arguments that creating additional good lives can justify (but not require) doing harm. Finally, I consider what the developed theories have to say about the importance of extinction risk and the long-run future. (shrink)

This paper considers two objections based in axiological considerations against the position that whether a given outcome, or possible future or world, is morally worse than a second world may depend in part on what is going on at a third world. Such a wide-angled approach to determining worseness is critical to the solution I have previously proposed in connection with the nonidentity problem. I argue that both objections fail.

The American Journal of Bioethics, Volume 12, Issue 8, Page 38-39, August 2012.

ABSTRACT Suppose that, for every possible event and person who would exist whether or not the event were to occur, there is a well-being level that the person would occupy if the event were to occur, and a well-being level that the person would occupy if the event were not to occur. Do facts about such connections between events and well-being levels always suffice to determine whether an event would harm or benefit a person? Many seemingly attractive accounts of harm (...) and benefit entail an affirmative answer to this question, including the widely held Counterfactual Comparative Account (CCA). In this paper, however, we argue that all such accounts will be unsuccessful. (shrink)

According to the standard version of the counterfactual comparative account of harm, an event is overall harmful for an individual if and only if she would have been on balance better off if it had not occurred. This view faces the “preemption problem.” In the recent literature, there are various ingenious attempts to deal with this problem, some of which involve slight additions to, or modifications of, the counterfactual comparative account. We argue, however, that none of these attempts work, and (...) that the preemption problem continues to haunt the counterfactual comparative account. (shrink)

Because harm is an important notion in ethics, it’s worth investigating what it amounts to. The counterfactual comparative account of harm, commonly thought to be the most promising account of harm, analyzes harm by comparing what actually happened with what would have happened in some counterfactual situation. But it faces the preemption problem, a problem so serious that it has driven some to suggest we abandon the counterfactual comparative account and maybe even abandon the notion of harm altogether. This paper (...) defends a version of the counterfactual comparative account that solves the preemption problem, a version called the “worse than nothing account.” It says that you harm someone just in case you leave them worse off than if you’d done nothing at all. (shrink)

Harm is one of the central concepts of ethics so it would be good to offer an account of it. Many accounts appeal to a baseline: they say that you harm someone if you leave them worse off than in the baseline case. In this paper, I draw some lessons regarding what counts as an appropriate baseline and explore what these general lessons reveal about the nature of harm. In the process of so doing, I argue that a certain rarely-discussed (...) account of harm -- the worse than nothing account of harm -- does a particularly good job at identifying a baseline. This account says you harm someone if you leave them worse off than if you had done nothing to them. (shrink)

Suppose that Depletion will reduce the well-being of future people. Many of us would like to say that Depletion is wrong because of the harm to future people. However, it can easily be made to seem that Depletion is actually harmless – this is the non-identity problem. I discuss a particularly ingenious attempt by Melinda Roberts to attribute a harm to Depletion. I will argue that the magnitude of Roberts's harm is off target by many orders of magnitude: it is (...) just too tiny to explain the intuitive wrong of Depletion. (shrink)

Der Beitrag setzt sich kritisch mit dem Prinzip des prokreativen Wohltuns von Julian Savulescu und seinen Implikationen für den Umgang mit der Präimplantationsdiagnostik auseinander. PB fordert angehende Eltern dazu auf, aus mehreren möglichen zukünftigen Kindern dasjenige auszuwählen, dessen Leben voraussichtlich am besten verlaufen wird. Paare mit Kinderwunsch sind danach zumindest unter bestimmten Umständen moralisch verpflichtet, eine PID in Anspruch zu nehmen, um die Weitergabe genetisch bedingter Krankheiten zu verhindern. Die Auswahl von Embryonen im Rahmen einer PID kann jedoch nur dann (...) mit dem Wohlergehen des zukünftigen Kindes begründet werden, wenn man die entsprechende Wohltunspflicht mit Savulescu und Kahane als „unpersönliche“ moralische Pflicht versteht. PB wirft daher die Frage nach der Relevanz unpersönlicher Erwägungen für Entscheidungen über Fortpflanzung und Familiengründung auf. Gegen Savulescu und Kahane argumentiere ich dafür, reproduktive Verantwortung als einen integralen Aspekt elterlicher Verantwortung und damit als personenbezogene Verantwortung zu deuten, und verteidige diese Konzeption reproduktiver Verantwortung gegen Einwände, die sich aus einem von Savulescu und Kahane konstruierten hypothetischen Szenario – dem Röteln-Beispiel – ergeben. (shrink)

Der Beitrag setzt sich kritisch mit dem Prinzip des prokreativen Wohltuns von Julian Savulescu und seinen Implikationen für den Umgang mit der Präimplantationsdiagnostik auseinander. PB fordert angehende Eltern dazu auf, aus mehreren möglichen zukünftigen Kindern dasjenige auszuwählen, dessen Leben voraussichtlich am besten verlaufen wird. Paare mit Kinderwunsch sind danach zumindest unter bestimmten Umständen moralisch verpflichtet, eine PID in Anspruch zu nehmen, um die Weitergabe genetisch bedingter Krankheiten zu verhindern. Die Auswahl von Embryonen im Rahmen einer PID kann jedoch nur dann (...) mit dem Wohlergehen des zukünftigen Kindes begründet werden, wenn man die entsprechende Wohltunspflicht mit Savulescu und Kahane als „unpersönliche“ moralische Pflicht versteht. PB wirft daher die Frage nach der Relevanz unpersönlicher Erwägungen für Entscheidungen über Fortpflanzung und Familiengründung auf. Gegen Savulescu und Kahane argumentiere ich dafür, reproduktive Verantwortung als einen integralen Aspekt elterlicher Verantwortung und damit als personenbezogene Verantwortung zu deuten, und verteidige diese Konzeption reproduktiver Verantwortung gegen Einwände, die sich aus einem von Savulescu und Kahane konstruierten hypothetischen Szenario – dem Röteln-Beispiel – ergeben. (shrink)

Within the climate justice debate, the ‘beneficiary pays’ principle holds that those who benefit from greenhouse emissions associated with industrialization ought to pay for the costs of mitigating and adapting to their adverse effects. This principle constitutes a claim of inter-generational justice, and it is widely believed that the non-identity problem raises serious difficulties for any such claim. After briefly sketching the rationale behind ‘beneficiary pays,’ this paper offers a new way of understanding the claim that persons in developed societies (...) have benefited from industrialization. It argues that when we think of the claim in this new way, it evades the non-identity problem entirely. Some objections to this approach are then considered and rebutted. The paper concludes by comparing the present, relatively modest solution to the nonidentity problem with a much more ambitious attempt from the recent literature. (shrink)

In this paper I tried to find a harm based solution to the non-identity problem. I explore the view upon which future persons are harmed if we prevent them from having what it is required by the Principle of Utility.

In this paper we distinguish two versions of the non-identity problem: one involving positive well-being and one involving negative well-being. Intuitively, there seems to be a difference between the two versions of the problem. In the negative case it is clear that one ought to cause the better off person to exist. However, it has recently been suggested that this is not so in the positive case. We argue that such an asymmetrical treatment of the two versions should be rejected (...) and that this is evidence against views according to which it is permissible to cause the less well off person to exist in the positive non-identity case. (shrink)

This paper offers a unified explanation for the procreation asymmetry and the non-identity thesis – two of the most intractable puzzles in population ethics. According to the procreation asymmetry, there are moral reasons not to create lives that are not worth living but no moral reasons to create lives that are worth living. I explain the procreation asymmetry by arguing that there are moral reasons to prevent the bad, but no moral reasons to promote the good. Various explanations for the (...) procreation asymmetry have failed to explain the non-identity thesis: if one could create a person with a good life or a different person with a better life, one has a moral reason to create the better life. I argue that reflections on the misfortune of unfulfilled potential allow us to circumvent the non-identity problem. (shrink)

This thesis consists of a series of papers in population ethics: a subfield of normative ethics concerned with the distinctive issues that arise in cases where our actions can affect the identities or number of people of who ever exist. Each paper can be read independently of the others. In Chapter 1, I present a dilemma for Archimedean views in population axiology: roughly, those views on which adding enough good lives to a population can make that population better than any (...) other. In Chapter 2, I extend Gustaf Arrhenius’s famous impossibility theorems in population axiology into the domain of choices under risk. My risky impossibility theorems dispense with the assumption that welfare levels are finitely fine-grained, and so tell against lexical views in population axiology. In Chapter 3, I present objections to critical-level and critical-range views in population axiology. I then sketch out what I call the ‘Imprecise Exchange Rates View’ and argue that it is an attractive alternative. In Chapter 4, I address critical-level and critical-range views again. This time, I note that they are vulnerable to objections from biographical identity: identity between lives. I suggest that these objections give us reason to reject critical-level and critical-range views and embrace the Total View. In Chapter 5, I argue that objections of the same form – objections from personal identity – tell against person-affecting views in population ethics. In Chapter 6, I draw out some counterintuitive implications of two recent complaints-based theories of the procreation asymmetry. (shrink)