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  1. Climate Change and Decision Theory.Andrea S. Asker & H. Orri Stefánsson - 2023 - In Pellegrino Gianfranco & Marcello Di Paola (eds.), Handbook of Philosophy of Climate Change. Springer Nature. pp. 267-286.
    Many people are worried about the harmful effects of climate change but nevertheless enjoy some activities that contribute to the emission of greenhouse gas (driving, flying, eating meat, etc.), the main cause of climate change. How should such people make choices between engaging in and refraining from enjoyable greenhouse-gas-emitting activities? In this chapter, we look at the answer provided by decision theory. Some scholars think that the right answer is given by interactive decision theory, or game theory; and moreover think (...)
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  2. Probability, normalcy and the right against risk imposition.Martin Smith - forthcoming - Journal of Ethics and Social Philosophy.
    Many philosophers accept that, as well as having a right that others not harm us, we also have a right that others not subject us to a risk of harm. And yet, when we attempt to spell out precisely what this ‘right against risk imposition’ involves, we encounter a series of notorious puzzles. Existing attempts to deal with these puzzles have tended to focus on the nature of rights – but I propose an approach that focusses instead on the nature (...)
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  3. In defence of Pigou-Dalton for chances.Stefánsson H. Orri - 2023 - Utilitas 35 (4):292-311.
    I defend a weak version of the Pigou-Dalton principle for chances. The principle says that it is better to increase the survival chance of a person who is more likely to die rather than a person who is less likely to die, assuming that the two people do not differ in any other morally relevant respect. The principle justifies plausible moral judgements that standard ex post views, such as prioritarianism and rank-dependent egalitarianism, cannot accommodate. However, the principle can be justified (...)
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  4. How a pure risk of harm can itself be a harm: A reply to Rowe.H. Orri Stefánsson - forthcoming - Analysis.
    Argues that given an appropriate understanding of objective probabilities, pure objective risk of harm can itself be a harm.
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  5. An objection to the modal account of risk.Martin Smith - 2023 - Synthese 201 (5):1-9.
    In a recent paper in this journal Duncan Pritchard responds to an objection to the modal account of risk pressed by Ebert, Smith and Durbach ( 2020 ). In this paper, I expand upon the objection and argue that it still stands. I go on to consider a more general question raised by this exchange – whether risk is ‘objective’, or whether it is something that varies from one perspective to another.
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  6. Ignore risk; Maximize expected moral value.Michael Zhao - 2021 - Noûs 57 (1):144-161.
    Many philosophers assume that, when making moral decisions under uncertainty, we should choose the option that has the greatest expected moral value, regardless of how risky it is. But their arguments for maximizing expected moral value do not support it over rival, risk-averse approaches. In this paper, I present a novel argument for maximizing expected value: when we think about larger series of decisions that each decision is a part of, all but the most risk-averse agents would prefer that we (...)
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Existential Risk
  1. High Risk, Low Reward: A Challenge to the Astronomical Value of Existential Risk Mitigation.David Thorstad - 2023 - Philosophy and Public Affairs 51 (4):373-412.
    Philosophy &Public Affairs, Volume 51, Issue 4, Page 373-412, Fall 2023.
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  2. Three mistakes in the moral mathematics of existential risk.David Thorstad - manuscript
    Longtermists have recently argued that it is overwhelmingly important to do what we can to mitigate existential risks to humanity. I consider three mistakes that are often made in calculating the value of existential risk mitigation: focusing on cumulative risk rather than period risk; ignoring background risk; and neglecting population dynamics. I show how correcting these mistakes pushes the value of existential risk mitigation substantially below leading estimates, potentially low enough to threaten the normative case for existential risk mitigation. I (...)
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  3. The argument for near-term human disempowerment through AI.Leonard Dung - manuscript
    Many researchers and intellectuals warn about extreme risks from artificial intelligence. However, these warnings typically came without systematic arguments in support. This paper provides an argument that AI will lead to the permanent disempowerment of humanity, e.g. human extinction, by 2100. It rests on four substantive premises which it motivates and defends: First, the speed of advances in AI capability, as well as the capability level current systems have already reached, suggest that it is practically possible to build AI systems (...)
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  4. Protecting Future Generations by Enhancing Current Generations.Parker Crutchfield - forthcoming - In Fabrice Jotterand & Marcello Ienca (eds.), The Routledge Handbook of the Ethics of Human Enhancement. New York: Routledge.
    It is plausible that current generations owe something to future generations. One possibility is that we have a duty to not harm them. Another possibility is that we have a duty to protect them. In either case, however, to satisfy the duties to future generations from environmental or political degradation, we need to engage in widespread collective action. But, as we are, we have a limited ability to do so, in part because we lack the self-discipline necessary for successful collective (...)
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  5. The epistemic challenge to longtermism.Christian Tarsney - 2023 - Synthese 201 (6):1-37.
    Longtermists claim that what we ought to do is mainly determined by how our actions might affect the very long-run future. A natural objection to longtermism is that these effects may be nearly impossible to predict — perhaps so close to impossible that, despite the astronomical importance of the far future, the expected value of our present actions is mainly determined by near-term considerations. This paper aims to precisify and evaluate one version of this epistemic objection to longtermism. To that (...)
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  6. Longtermism and social risk-taking.H. Orri Stefánsson - forthcoming - In Jacob Barrett, Hilary Greaves & David Thorstad (eds.), Essays on Longtermism. Oxford University Press.
    A social planner who evaluates risky public policies in light of the other risks with which their society will be faced should judge favourably some such policies even though they would deem them too risky when considered in isolation. I suggest that a longtermist would—or at least should—evaluate risky polices in light of their prediction about future risks; hence, longtermism supports social risk-taking. I consider two formal versions of this argument, discuss the conditions needed for the argument to be valid, (...)
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  7. Human Extinction from a Thomist Perspective.Stefan Riedener - 2022 - In Dominic Roser, Stefan Riedener & Markus Huppenbauer (eds.), Effective Altruism and Religion Synergies, Tensions, Dialogue. Baden-Baden, Germany: Nomos. pp. 187-210.
    “Existential risks” are risks that threaten the destruction of humanity’s long-term potential: risks of nuclear wars, pandemics, supervolcano eruptions, and so on. On standard utilitarianism, it seems, the reduction of such risks should be a key global priority today. Many effective altruists agree with this verdict. But how should the importance of these risks be assessed on a Christian moral theory? In this paper, I begin to answer this question – taking Thomas Aquinas as a reference, and the risks of (...)
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  8. Existential risk from AI and orthogonality: Can we have it both ways?Vincent C. Müller & Michael Cannon - 2021 - Ratio 35 (1):25-36.
    The standard argument to the conclusion that artificial intelligence (AI) constitutes an existential risk for the human species uses two premises: (1) AI may reach superintelligent levels, at which point we humans lose control (the ‘singularity claim’); (2) Any level of intelligence can go along with any goal (the ‘orthogonality thesis’). We find that the singularity claim requires a notion of ‘general intelligence’, while the orthogonality thesis requires a notion of ‘instrumental intelligence’. If this interpretation is correct, they cannot be (...)
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  9. Should longtermists recommend hastening extinction rather than delaying it?Richard Pettigrew - forthcoming - The Monist.
    Longtermism is the view that the most urgent global priorities, and those to which we should devote the largest portion of our resources, are those that focus on (i) ensuring a long future for humanity, and perhaps sentient or intelligent life more generally, and (ii) improving the quality of the lives that inhabit that long future. While it is by no means the only one, the argument most commonly given for this conclusion is that these interventions have greater expected goodness (...)
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  10. Human Extinction, Narrative Ending, and Meaning of Life.Brooke Alan Trisel - 2016 - Journal of Philosophy of Life 6 (1):1-22.
    Some people think that the inevitability of human extinction renders life meaningless. Joshua Seachris has argued that naturalism can be conceptualized as a meta-narrative and that it narrates across important questions of human life, including what is the meaning of life and how life will end. How a narrative ends is important, Seachris argues. In the absence of God, and with knowledge that human extinction is a certainty, is there any way that humanity could be meaningful and have a good (...)
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  11. Existential Risks: Exploring a Robust Risk Reduction Strategy.Karim Jebari - 2015 - Science and Engineering Ethics 21 (3):541-554.
    A small but growing number of studies have aimed to understand, assess and reduce existential risks, or risks that threaten the continued existence of mankind. However, most attention has been focused on known and tangible risks. This paper proposes a heuristic for reducing the risk of black swan extinction events. These events are, as the name suggests, stochastic and unforeseen when they happen. Decision theory based on a fixed model of possible outcomes cannot properly deal with this kind of event. (...)
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  12. Human extinction and the value of our efforts.Brooke Alan Trisel - 2004 - Philosophical Forum 35 (3):371–391.
    Some people feel distressed reflecting on human extinction. Some people even claim that our efforts and lives would be empty and pointless if humanity becomes extinct, even if this will not occur for millions of years. In this essay, I will attempt to demonstrate that this claim is false. The desire for long-lastingness or quasi-immortality is often unwittingly adopted as a standard for judging whether our efforts are significant. If we accomplish our goals and then later in life conclude that (...)
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Moral Risk
  1. The Rules of Rescue: Cost, Distance, and Effective Altruism, by Theron Pummer. [REVIEW]Daniel Muñoz - forthcoming - Mind:fzad043.
    A lovingly critical review focused on issues of risk, aggregation, autonomy, and supererogation.
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  2. Chance, consent, and COVID-19.Ryan Doody - 2023 - In Evandro Barbosa (ed.), Moral Challenges in a Pandemic Age. Routledge. pp. 204-224.
    Are mandatory lockdown measures, which place restrictions on one’s freedom to move and assemble, justifiable? Offhand, such measures appear to compromise important rights to secure goals of public health. Proponents of such measures think the trade-off is worth it; opponents think it isn’t. However, one might think that casting the debate in these terms concedes too much to the opponents. Mandatory lockdown measures don’t infringe important rights because no one has a right to impose a risk of grievous harm on (...)
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  3. The Abolition of Phenomena: a Voyage among the Zombies.Katalin Balog - 2023 - Klesis 55.
    Illusionism claims that we are not conscious, that there is nothing it is like, in the usual sense of the word, to feel sad, or to smell lavender. According to Illusionists, we are, in a technical sense, zombies. Instead of arguing for the falsity of Illusionism directly, I will explain why the main philosophical motivations for it are mistaken – and I trust the rest will be taken care of by the extreme implausibility of the view. I want to spread (...)
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  4. Circumstantial and Constitutive Moral Luck in Kant's Moral Philosophy.Robert J. Hartman - forthcoming - European Journal of Philosophy.
    The received view of Kant’s moral philosophy is that it precludes all moral luck. But I offer a plausible interpretation according to which Kant embraces moral luck in circumstance and constitution. I interpret the unconditioned nature of transcendental freedom as a person’s ability to do the right thing no matter how she is inclined by her circumstantial and constitutive luck. I argue that various passages about degrees of difficulty relating to circumstantial and constitutive luck provide a reason to accept a (...)
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  5. Don't Risk Homicide: Abortion After 10 Weeks Gestation.Matthew Braddock - forthcoming - Journal of Medicine and Philosophy.
    When an abortion is performed, someone dies. Are we killing an innocent human person? Widespread disagreement exists. However, it’s not necessary to establish personhood in order to establish the wrongness of abortion: a substantial chance of personhood is enough. We defend The Don’t Risk Homicide Argument: abortions are wrong after 10 weeks gestation because they substantially and unjustifiably risk homicide, the unjust killing of an innocent person. Why 10 weeks? Because the cumulative evidence establishes a substantial chance (a more than (...)
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Risk in Decision Theory
  1. A trilemma for the lexical utility model of the precautionary principle.H. Orri Stefánsson - forthcoming - Philosophical Studies.
    Bartha and DesRoches (2021) and Steel and Bartha (2023) argue that we should understand the precautionary principle as the injunction to maximise lexical utilities. They show that the lexical utility model has important pragmatic advantages. Moreover, the model has the theoretical advantage of satisfying all axioms of expected utility theory except continuity. In this paper I raise a trilemma for any attempt at modelling the precautionary principle with lexical utilities: it permits choice cycles or leads to paralysis or implies that (...)
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  2. Fairness and risk attitudes.Richard Bradley & Stefánsson H. Orri - 2023 - Philosophical Studies 180 (10-11):3179-3204.
    According to a common judgement, a social planner should often use a lottery to decide which of two people should receive a good. This judgement undermines one of the best-known arguments for utilitarianism, due to John C. Harsanyi, and more generally undermines axiomatic arguments for utilitarianism and similar views. In this paper we ask which combinations of views about (a) the social planner’s attitude to risk and inequality, and (b) the subjects’ attitudes to risk are consistent with the aforementioned judgement. (...)
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  3. Risk-taking and tie-breaking.Ryan Doody - 2023 - Philosophical Studies 180 (7):2079-2104.
    When you are indifferent between two options, it’s rationally permissible to take either. One way to decide between two such options is to flip a fair coin, taking one option if it lands heads and the other if it lands tails. Is it rationally permissible to employ such a tie-breaking procedure? Intuitively, yes. However, if you are genuinely risk-averse—in particular, if you adhere to risk-weighted expected utility theory (Buchak in Risk and rationality, Oxford University Press, 2013) and have a strictly (...)
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  4. Hard Choices Made Harder.Ryan Doody - 2021 - In Henrik Andersson & Anders Herlitz (eds.), Value Incommensurability: Ethics, Risk, and Decision-Making. Routledge. pp. 247-266.
    How should you evaluate your choices when you’re unsure what their outcomes will be? One popular answer is to rank your options in terms of their expected utilities. But what should you do when you think that the value of their respective outcomes might be incommensurable? In the face of incommensurable values, it no longer makes sense to speak of ranking your options according to expected utility. Are there any general principles to guide us when facing decisions of this kind? (...)
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  5. Longtermism and social risk-taking.H. Orri Stefánsson - forthcoming - In Jacob Barrett, Hilary Greaves & David Thorstad (eds.), Essays on Longtermism. Oxford University Press.
    A social planner who evaluates risky public policies in light of the other risks with which their society will be faced should judge favourably some such policies even though they would deem them too risky when considered in isolation. I suggest that a longtermist would—or at least should—evaluate risky polices in light of their prediction about future risks; hence, longtermism supports social risk-taking. I consider two formal versions of this argument, discuss the conditions needed for the argument to be valid, (...)
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  6. The Sure Thing Principle Leads to Instability.J. Dmitri Gallow - forthcoming - Philosophical Quarterly.
    Orthodox causal decision theory is unstable. Its advice changes as you make up your mind about what you will do. Several have objected to this kind of instability and explored stable alternatives. Here, I'll show that explorers in search of stability must part with a vestige of their homeland. There is no plausible stable decision theory which satisfies Savage's Sure Thing Principle. So those in search of stability must learn to live without it.
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  7. Individual Climate Risks at the Bounds of Rationality.Avram Hiller - 2023 - In Adriana Placani & Stearns Broadhead (eds.), Risk and Responsibility in Context. Routledge. pp. 249-271.
    All ordinary decisions involve some risk. If I go outside for a walk, I may trip and injure myself. But if I don’t go for a walk, I slightly increase my chances of cardiovascular disease. Typically, we disregard most small risks. When, for practical purposes, is it appropriate for one to ignore risk? This issue looms large because many activities performed by those in wealthy societies, such as driving a car, in some way risk contributing to climate harms. Are these (...)
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  8. Risk, Precaution, and Causation.Masaki Ichinose - 2022 - Tetsugaku: International Journal of the Philosophical Association of Japan 6:22-53.
    This paper aims to scrutinize how the notion of risk should be understood and applied to possibly catastrophic cases. I begin with clarifying the standard usage of the notion of risk, particularly emphasizing the conceptual relation between risk and probability. Then, I investigate how to make decisions in the case of seemingly catastrophic disasters by contrasting the precautionary principle with the preventive (prevention) principle. Finally, I examine what kind of causal thinking tends to be actually adopted when we make decisions (...)
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  9. On Choosing how to Choose.Richard Pettigrew - manuscript
    A decision theory is self-recommending if, when you ask it which decision theory you should use, it considers itself to be among the permissible options. I show that many alternatives to expected utility theory are not self-recommending, and I argue that this tells against them.
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  10. Decision theory and de minimis risk.Martin Smith - forthcoming - Erkenntnis:1-24.
    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 (...)
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Risk, Misc
  1. How to evaluate the risks of Artificial Intelligence: a proportionality-based, risk model for the AI Act.Claudio Novelli, Federico Casolari, Antonino Rotolo, Mariarosaria Taddeo & Luciano Floridi - manuscript
    The EU proposal for the Artificial Intelligence Act (AIA) defines four risk categories: unacceptable, high, limited, and minimal. However, as these categories statically depend on broad fields of application of AI systems (AIs), the risk magnitude may be wrongly estimated, and the AIA may not be enforced effectively. Our suggestion is to apply the four categories to the risk scenarios of each AIs, rather than solely to its field of application. We address this model flaw by integrating the AIA with (...)
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  2. Philosophical aspects of probabilistic seismic hazard analysis (PSHA): a critical review.Luca Zanetti & Daniele Chiffi - 2023 - Natural Hazards:1-20.
    The goal of this paper is to review and critically discuss the philosophical aspects of probabilistic seismic hazard analysis (PSHA). Given that estimates of seismic hazard are typically riddled with uncertainty, diferent epistemic values (related to the pursuit of scientifc knowledge) compete in the selection of seismic hazard models, in a context infuenced by non-epistemic values (related to practical goals and aims) as well. We frst distinguish between the diferent types of uncertainty in PSHA. We claim that epistemic and nonepistemic (...)
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