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26The Repugnant Conclusion is an implication of some approaches to population ethics. It states, in Derek Parfit's original formulation, For any possible population of at least ten billion people, all with a very high quality of life, there must be some much larger imaginable population whose existence, if other things are equal, would be better, even though its members have lives that are barely worth living. (Parfit 1984: 388)
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50Genres of the Political: The Impolitical Comedy of ConflictIn Tilottama Rajan & Antonio Calcagno (eds.), _Roberto Esposito: New Directions in Biophilosophy_, eds. Tilottama Rajan and Antonio Calcagno, Edinburgh University Press. pp. 60-82. 2021.
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29Ethical decision-making: effects of ethical self-efficacy and uncertaintyEthics and Behavior. forthcoming.For counselors, the welfare of clients and the protection of the community are grounded in comprehension and implementation of ethical principles in practice. Counselors face increasing ethics complexity as organizational and political influences conflict with client’s self-interest. Two thought-experiments involving a Tarasoff-like dilemma were used to explore factors related to ethical decision-making by clinicians in definitive and ambiguous duty-to-warn situations. Outcomes demonstrated that…Read more
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18Personal Identity and Impersonal EthicsIn Jeff McMahan, Tim Campbell, James Goodrich & Ketan Ramakrishnan (eds.), Principles and Persons: The Legacy of Derek Parfit, Oxford University Press. pp. 55-84. 2021.On the Reductionist View, the fact of a person’s existence and that of her identity over time just consist in the holding of certain more particular facts about physical and mental events and the relations between these events. These more particular facts are impersonal—they do not presuppose or entail the existence of any person or mental subject. In _Reasons and Persons_, Derek Parfit claims that if the Reductionist View is true, then ‘it is … more plausible to focus, not on persons, but on ex…Read more
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4Animalism and the Varieties of Conjoined TwinningIn Stephan Blatti & Paul F. Snowdon (eds.), Animalism: New Essays on Persons, Animals, and Identity, Oxford University Press Uk. pp. 229-252. 2016.This chapter defends the view that we are not identical to organisms against the objection that it implies that there are two subjects of every conscious state one experiences: oneself and one’s organism. It goes on to criticize animalism—the view that each of us is identical to a human organism—by showing that it has unacceptable implications for a range of actual and hypothetical cases of conjoined twinning: dicephalus, craniopagus parasiticus, and cephalopagus. In conclusion, the chapter find…Read more
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47Survey Article: When and What Is the “Hinge of History”?Political Philosophy 2 (2). 2025.The concept of "the hinge of history" suggests a unique period in which human actions have unprecedented and potentially irreversible consequences for the long-term future of civilization. This paper critically examines the coherence and utility of this idea by assessing six candidate definitions drawn from philosophical, futurist, and activist literature, as well as proposing a novel decision-theoretic definition. Using three evaluative criteria—centering human agency, decision-relevance, and r…Read more
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430Animalism and the varieties of conjoined twinningTheoretical Medicine and Bioethics 31 (4): 285-301. 2010.We defend the view that we are not identical to organisms against the objection that it implies that there are two subjects of every conscious state one experiences: oneself and one’s organism. We then criticize animalism —the view that each of us is identical to a human organism—by showing that it has unacceptable implications for a range of actual and hypothetical cases of conjoined twinning : dicephalus, craniopagus parasiticus, and cephalopagus.
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43Review of Ingmar Persson’s Inclusive Ethics: Extending Beneficence and Egalitarian Justice. Oxford: Oxford University Press, 2017, 288 ppErasmus Journal for Philosophy and Economics 10 (2): 76-87. 2017.
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409The Parent Trap: Why Choice-Dependent Moral Theories Fail to Deliver the AsymmetryUtilitas 37 (2): 141-155. 2025.According to the asymmetry, creating a miserable person is morally impermissible but failing to create a happy person is morally permissible, other things being equal. Some attempt to underwrite the asymmetry by appealing to a choice-dependent moral theory according to which the deontic status of an act depends on whether the agent performs it. We show that all choice-dependent moral theories in the literature are vulnerable to what we call ‘The Parent Trap’. These theories imply that the presen…Read more
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3296What Should We Agree on about the Repugnant Conclusion?Utilitas 33 (4): 379-383. 2021.The Repugnant Conclusion served an important purpose in catalyzing and inspiring the pioneering stage of population ethics research. We believe, however, that the Repugnant Conclusion now receives too much focus. Avoiding the Repugnant Conclusion should no longer be the central goal driving population ethics research, despite its importance to the fundamental accomplishments of the existing literature.
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127Frick’s Defense of the Procreation AsymmetryJournal of Moral Philosophy 22 (1-2): 125-150. 2025.The Procreation Asymmetry, in strongest form, states (roughly) that while we have no reason to create happy people, we do have reason not to create unhappy people. Despite its popularity among non-utilitarian philosophers, it has been surprisingly difficult to give an adequate theoretical defense of this asymmetry. However, in a recent paper, Johann Frick attempts to provide a unified account of the asymmetry that avoids the problems with previous attempts. One of Frick’s novel claims is that a …Read more
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73Axiological Retributivism and the Desert Neutrality ParadoxPhilosophies 7 (4): 80. 2022.According to axiological retributivism, people can deserve what is bad for them and an outcome in which someone gets what she deserves, even if it is bad for her, can thereby have intrinsic positive value. A question seldom asked is how axiological retributivism should deal with comparisons of outcomes that differ with respect to the number and identities of deserving agents. Attempting to answer this question exposes a problem for axiological retributivism that parallels a well-known problem in…Read more
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85Universal Procreation Rights and Future GenerationsJournal of Applied Philosophy 42 (1): 82-95. 2025.It is often acknowledged that public policies can constrain people's procreative opportunities, in some cases even infringing their procreative rights. However, a topic that is not often discussed is how the procreative choices of one generation can affect the procreative opportunities of later generations. In this article, we argue that the demographic fact that childbearing above the replacement fertility level is eventually unsustainable supports two constraints on universal procreation right…Read more
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147Transformative experience and the shark problemPhilosophical Studies 177 (11): 3549-3565. 2020.In her ground-breaking and highly influential book Transformative Experience, L.A. Paul makes two claims: (1) one cannot evaluate and compare certain experiential outcomes (e.g. being a parent and being a non-parent) unless one can grasp what these outcomes are like; and (2) one can evaluate and compare certain intuitively horrible outcomes (e.g. being eaten alive by sharks) as bad and worse than certain other outcomes even if one cannot grasp what these intuitively horrible outcomes are like. W…Read more
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123Correction to: Transformative experience and the shark problemPhilosophical Studies 177 (11): 3567-3568. 2020.In the original publication of the article.
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37Principles and Persons: The Legacy of Derek Parfit (edited book)Oxford University Press. 2021.This book is a collection of essays, most of which appear here for the first time, that were written in honour of the legendary moral philosopher, Derek Parfit. The essays are mainly concerned with issues that Parfit addressed in his book, Reasons and Persons. They include the relevance of personal identity to ethics, the rationality of different attitudes to time, the nature of well-being, the varieties of consequentialism, reasons for action, aggregation in ethics, causal overdetermination, eg…Read more
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75Ethics and Existence: The Legacy of Derek Parfit (edited book)Oxford University Press. 2022.Derek Parfit, who died in 2017, is widely believed to have been the best moral philosopher in well over a century. The twenty new essays in this book were written in his honour and have all been inspired by his work - in particular, his work in an area of moral philosophy known as 'population ethics', which is concerned with moral issues raised by causing people to exist. Until Parfit began writing about these issues in the 1970s, there was almost no discussion of them in the entire history of p…Read more
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168The Oxford Handbook of Population Ethics (edited book)Oxford University Press. 2022.This handbook presents up-to-date theoretical analyses of problems associated with the moral standing of future people in current decision-making. Future people pose an especially hard problem for our current decision-making, since their number and their identities are not fixed but depend on the choices the present generation makes. Do we make the world better by creating more people with good lives? What do we owe future generations in terms of justice? Such questions are not only philosophica…Read more
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15Healthcare rationing and the badness of death : should newborns count for less?In Espen Gamlund & Carl Tollef Solberg (eds.), Saving People from the Harm of Death, Oxford University Press. pp. 255-266. 2019.According to Jeff McMahan, health care professionals ought to save an individual, A, from dying as a young adult (e.g., at age 30) rather than save some other individual, B, from dying as a newborn, even if the latter intervention would give B twice as many years of full-quality life as the former intervention would give A. Call this claim _Young Adults over Newborns_. In this chapter, I argue that if we accept Young Adults over Newborns, then we must reject at least one of three other more plau…Read more
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95DALYs and the Minimally Good LifePublic Health Ethics 15 (2): 119-123. 2022.Nicole Hassoun’s book Global Health Impact: Extending Access to Essential Medicines has three parts. Part 1 is about the right to health, Part 2 offers a concrete proposal for how to promote the ability of people in the developing world to live minimally good lives and Part 3 is concerned with consumer responsibility as it relates to global health. I argue that there is a philosophical tension between the respective projects of Parts 1 and 2. The project of Part 1 reflects a sufficientarian idea…Read more
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93Persson's Merely Possible PersonsUtilitas 32 (4): 479-487. 2020.All else being equal, creating a miserable person makes the world worse, and creating an ecstatic person makes it better. Such claims are easily justified if it can be better, or worse, for a person to exist than not to exist. But that seems to require that things can be better, or worse, for a person even in a world in which she does not exist. Ingmar Persson defends this seemingly paradoxical claim in his latest book, Inclusive Ethics. He argues that persons that never exist are merely possibl…Read more
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80Persons, Interests, and Justice, by Nils HoltugMind 126 (502): 643-647. 2017.Persons, Interests, and Justice, by Nils Holtug. New York: Oxford University Press, 2010. Pp. vi + 352.
Timothy Campbell
Institute for Futures Studies
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Institute for Futures StudiesResearcher
Areas of Specialization
| Applied Ethics |
| Meta-Ethics |
| Normative Ethics |
Areas of Interest
| Metaphysics |
| Applied Ethics |
| Meta-Ethics |
| Normative Ethics |
PhilPapers Editorships
| Persons |