•  10
    If a potential person would have a good life if he were to come into existence, can we coherently regard his coming into existence as better for him than his never coming into existence? And can we regard the situation in which he never comes into existence as worse for him? In this paper, we argue that both questions should be answered affirmatively. We also explain where prominent arguments to differing conclusions go wrong. Finally, we explore the relevance of our answers to issues in populat…Read more
  •  9
    Separability
    In Iwao Hirose & Andrew Reisner (eds.), Weighing and Reasoning: Themes from the Philosophy of John Broome, Oxford University Press Uk. pp. 61-71. 2015.
    In Broome’s _Weighing Goods_, separability of time plays an important role in establishing the utilitarian principle of distribution. However, in _Weighing Lives_, Broome rejects separability of time because it cannot accommodate the value of longevity. This chapter argues that if the value of longevity is understood as the disvalue of premature death, the disvalue of premature death can be dispersed to temporal parts of people’s life in a way consistent with separability of time. However, despi…Read more
  •  27
    Axiological Sufficientarianism
    In Carina Fourie & Annette Rid (eds.), What is Enough?: Sufficiency, Justice, and Health, Oxford University Press. pp. 51-68. 2016.
    The axiological version of sufficientarianism contends that the disvalue associated with well-being below sufficiency is to be minimized, regardless of the aggregate value of well-being at and above sufficiency. This is called the sufficientarian ethos. This chapter offers the first axiological formula of the sufficientarian ethos, which reveals the following points. The disvalue of sub-sufficiency well-being is measured by a weighted sum of shortfall from sufficiency for individuals below suffi…Read more
  •  101
    Timeslice Prioritarianism, Prudence, and Weak Pareto
    Australasian Journal of Philosophy 103 (2): 547-552. 2025.
    ABSTRACT Andrić and Herlitz (2022) object to Timeslice Prioritarianism on the basis that it violates two purportedly uncontroversial properties: prudence and Weak Pareto. We will claim that their objection does not undermine Timeslice Prioritarianism because the basis of their objection is just a straightforward implication of utilitarianism. To establish this argument, we will show that a timeslice view satisfies prudence and Weak Pareto if and only if it is utilitarianism.
  •  80
    On the social and personal value of existence
    with Andrew Reisner
    In Iwao Hirose & Andrew Reisner (eds.), Weighing and Reasoning: Themes from the Philosophy of John Broome, Oxford University Press Uk. pp. 95-109. 2015.
    If a potential person would have a good life if he were to come into existence, can we coherently regard his coming into existence as better for him than his never coming into existence? And can we regard the situation in which he never comes into existence as worse for him? In this paper, we argue that both questions should be answered affirmatively. We also explain where prominent arguments to differing conclusions go wrong. Finally, we explore the relevance of our answers to issues in populat…Read more
  •  81
    Skepticism about Value Aggregation
    In Iwao Hirose & Jonas Olson (eds.), The Oxford Handbook of Value Theory, Oxford University Press Usa. 2015.
    Critics of utilitarianism and other forms of consequentialism often reject the aggregation of goods and bads across different individuals. This chapter critically examines their arguments against interpersonal aggregation. It begins by offering a clear definition of interpersonal aggregation and elucidating its theoretical structure. Then it argues against two types of objections to aggregation. The first is the argument from counterexamples and the other is the argument from the separateness of…Read more
  •  73
    Introduction to Value Theory
    In Iwao Hirose & Jonas Olson (eds.), The Oxford Handbook of Value Theory, Oxford University Press Usa. 2015.
    This introduction characterizes and positions value theory, or axiology, as a philosophical discipline. It identifies its central issues and explains how value theory overlaps partly with other areas of moral philosophy, such as metaethics and normative etics, and how it relates other areas of philosophy. The introduction also explains how value theory branches out to disciplines outside of philosophy, especially to economic theory. The Handbook is divided into three main parts, and section I.1 …Read more
  • Shlomi Segall
    with Dan Brock, Eric Cavallero, Norman Daniels, Nir Eyal, Adi Koplovitz, Martin McIvor, David Miller, Ole Norheim, and Daniel Schwartz
    In Carl Knight & Zofia Stemplowska (eds.), Responsibility and distributive justice, Oxford University Press. 2011.
  •  280
    Value superiority
    In Iwao Hirose & Jonas Olson (eds.), The Oxford Handbook of Value Theory, Oxford University Press Usa. pp. 225-248. 2015.
    Suppose that A and B are two kinds of goods such that more of each is better than less. A is strongly superior to B if any amount of A is better than any amount of B. It is weakly superior to B if some amount of A is better than any amount of B. There are many examples of these relations in the literature, sometimes under the labels “higher goods” and “discontinuity.” The chapter gives a precise and generalized statement of Strong and Weak Superiority and discusses different ways in which these …Read more
  •  45
    The value of existence
    In Iwao Hirose & Jonas Olson (eds.), The Oxford Handbook of Value Theory, Oxford University Press Usa. pp. 424-444. 2015.
  •  177
    The Oxford Handbook of Value Theory (edited book)
    Oxford University Press USA. 2015.
    Value theory, or axiology, looks at what things are good or bad, how good or bad they are, and, most fundamentally, what it is for a thing to be good or bad. Questions about value and about what is valuable are important to moral philosophers, since most moral theories hold that we ought to promote the good. This Handbook focuses on value theory as it pertains to ethics, broadly construed, and provides a comprehensive overview of contemporary debates pertaining not only to philosophy but also to…Read more
  •  948
    The meaning of "darn it!"
    with Andrew Reisner
    In Iwao Hirose & Andrew Reisner (eds.), Weighing and Reasoning: Themes from the Philosophy of John Broome, Oxford University Press Uk. pp. 129-139. 2015.
    In decision-theory, the notion of regret enters into the minimax decision-rule and has a determinate usage in this context. However, there are many alternative ways of conceiving of regret. The chapter constructs the einmalist- nicht-keinmal ('once is not never') game, in which a single sampling radically changes the expected value of the game in a way that is quite counterintuitive, as the basis for studying regret after a loss following the choice of an uncertain action. Crucially, the very lo…Read more
  •  105
    Minimally good life and the human right to health
    Developing World Bioethics 24 (1): 10-14. 2024.
    In Global Health Impact: Extending Access to Essential Medicines, Nicole Hassoun argues that the concept of a minimally good life grounds the human right to health, which in turn implies the human right to access essential medicines in developing countries. This article argues that Hassoun's argument must be revised. If the temporal unit of a minimally good life is identified, her argument faces a substantive problem, which undermines an important part of her argument. This article then proposes…Read more
  •  40
    The Americans with Disabilities Act and Health Care Allocation
    Problema. Anuario de Filosofía y Teoria Del Derecho 1 (4): 107-125. 2010.
    In this article, I will propose a theoretical argument for the prohibition of unequal treatment of disabled and non-disabled individuals in health care resource allocation. I will first consider an argument for unequal treatment, which was put forward by Singer et al, and elucidate its far-reaching scope. I will then use the same argument in order to derive an argument that would prohibit unequal treatment of disabled and non-disabled individuals in almost all cases of health care allocation.Res…Read more
  •  38
    パンデミック対策は何を目的とし、どのような基準と論理で行われるべきなのか? WHOの倫理指針の作成に携わった経験から分析。
  •  44
    The recent Covid-19 pandemic has brought a broad range of ethical problems to the forefront, raising fundamental questions about the role of government in response to such outbreaks, the scarcity and allocation of health care resources, the unequal distribution of health risks and economic impacts, and the extent to which individual freedom can be restricted. In this clear introduction to the topic Iwao Hirose explores these ethical questions and analyzes the central issues in the ethics of pand…Read more
  •  122
    In this dissertation, I discuss two distributive principles in moral philosophy: Derek Parfit's Prioritarianism and Egalitarianism. I attempt to defend a version of Egalitarianism, which I call Weighted Egalitarianism. Although Parfit claims that Egalitarianism is subject to what he calls the Levelling Down Objection, I show that my proposed Weighted Egalitarianism is not subject to the Objection, and that it gives priority to the worse off people. The real difference between the two principles …Read more
  •  156
    Reconsidering the value of equality
    Australasian Journal of Philosophy 87 (2): 301-312. 2009.
    Some people believe that the equality of people's well-being makes an outcome better, other things being constant. Call this Telic Egalitarianism. In this paper I will propose a new interpretation of Telic Egalitarianism, and compare it with the interpretation that is proposed by Derek Parfit 1995 and widely accepted by many philosophers. I will argue that my proposed interpretation is more plausible than Parfit's. One of the virtues in my interpretation is that it shows his Levelling Down Objec…Read more
  •  312
    Aggregation and numbers
    Utilitas 16 (1): 62-79. 2004.
    This article considers the reach of arguments for saving the greater number without interpersonal aggregation, and argues that interpersonal aggregation is useful to encompass the proper respect due to each separate person. I first give a precise definition of interpersonal aggregation, which many non-utilitarians try to avoid. Then, I show that consequentialism and Scanlon can justify the case for the greater number without interpersonal aggregation. However, I propose the Aggregation Approach,…Read more
  •  104
    Weighing and Reasoning: Themes from the Philosophy of John Broome (edited book)
    Oxford University Press UK. 2015.
    John Broome has made major contributions to, and radical innovations in, contemporary moral philosophy. His research combines the formal method of economics with the philosophical analysis. Broome's works stretch over formal axiology, decision theory, philosophy of economics, population axiology, the value of life, the ethics of climate change, the nature of rationality, and practical and theoretical reasoning. Weighing and Reasoning brings together fifteen original essays from leading philosoph…Read more
  •  113
    Intertemporal Distributive Judgement
    Ethical Theory and Moral Practice 8 (4): 371-386. 2005.
    This paper considers the simple two-person two-period case of distributive judgement, and argues (a) that sensible intertemporal distributive principle should consider both the distribution of people's life time well-being and the distribution of people's well-being at each period and (b) that, if (a) is correct, Egalitarianism is more acceptable than Prioritarianism since the latter must choose either one.
  •  477
    Aggregation and the Separateness of Persons
    Utilitas 25 (2): 182-205. 2013.
    Many critics of utilitarianism claim that we should reject interpersonal aggregation because aggregative principles do not take the separateness of persons seriously. In this article, I will reject this claim. I will first elucidate the theoretical structure of aggregation. I will then consider various interpretations of the notion of the separateness of persons and clarify what exactly those critics are trying to reject by appealing to the notion of the separateness of persons. I will argue tha…Read more
  •  81
    Moral Aggregation
    OUP Usa. 2014.
    This book elucidates the theoretical structure and scope of interpersonal and intra-personal aggregation--a trade-off between benefits to a group of individuals and losses to another group of individuals--and defends a form of aggregation -- formal aggregation -- that resolves a variety of outstanding problems arising from the conventional understanding of aggregation, including the Number Problem concerning the moral relevance of the number of individuals.
  •  295
    Saving the greater number without combining claims
    Analysis 61 (4): 341-342. 2001.