•  4
    Jeffrey Conditionalization, the Principal Principle, the Desire as Belief Thesis, and Adams’s Thesis
    British Journal for the Philosophy of Science 64 (4): 837-850. 2013.
    I show that David Lewis’s principal principle is not preserved under Jeffrey conditionalization. Using this observation, I argue that Lewis’s reason for rejecting the desire as belief thesis and Adams’s thesis applies also to his own principal principle. 1 Introduction2 Adams’s Thesis, the Desire as Belief Thesis, and the Principal Principle3 Jeffrey Conditionalization4 The Principal Principles Not Preserved under Jeffrey Conditionalization5 Inadmissible Experiences.
  •  315
    Empirical evidence for moral Bayesianism
    with Haim Cohen and Anat Maril
    Philosophical Psychology. forthcoming.
    Many philosophers in the field of meta-ethics believe that rational degrees of confidence in moral judgments should have a probabilistic structure, in the same way as do rational degrees of belief. The current paper examines this position, termed “moral Bayesianism,” from an empirical point of view. To this end, we assessed the extent to which degrees of moral judgments obey the third axiom of the probability calculus, ifP(A∩B)=0thenP(A∪B)=P(A)+P(B), known as finite additivity, as compared to de…Read more
  •  50
    Attitudes toward risk are complicated: experimental evidence for the re-individuation approach to risk-attitudes
    with Haim Cohen, Anat Maril, and Sun Bleicher
    Philosophical Studies 179 (8): 2553-2577. 2022.
    We present experimental evidence that supports the thesis :602–625, 2015, Br J Philos Sci 70:77–102, 2019; Bradley in Decisions theory with a human face, Cambridge University Press, Cambridge, 2017; Goldschmidt and Nissan-Rozen in Synthese 198:7553–7575, 2021) that people might positively or negatively desire risky prospects conditional on only some of the prospects’ outcomes obtaining. We argue that this evidence has important normative implications for the central debate in normative decision …Read more
  •  358
    Libertarian Paternalism and Susan Hurley's Political Philosophy
    Inquiry: An Interdisciplinary Journal of Philosophy. forthcoming.
    As the use of nudges by governmental agencies becomes more common, the need for normative guidelines regarding the processes by which decisions about the implementation of specific nudges are taken becomes more acute. In order to find a justified set of such guidelines one must meet several theoretical challenges to Libertarian Paternalism that arise at the foundational level. In this paper, I identify three central challenges to Libertarian Paternalism, and suggest that Susan Hurley's political…Read more
  •  324
    Weighing and aggregating reasons under uncertainty: a trilemma
    Philosophical Studies 178 (9): 2853-2871. 2020.
    I discuss the trilemma that consists of the following three principles being inconsistent: 1. The Common Principle: if one distribution, A, necessarily brings a higher total sum of personal value that is distributed in a more egalitarian way than another distribution, B, A is more valuable than B. 2. (Weak) ex-ante Pareto: if one uncertain distribution, A, is more valuable than another uncertain distribution, B, for each patient, A is more valuable than B. 3. Pluralism about attitudes to risk…Read more
  •  77
    The intrinsic value of risky prospects
    Synthese 198 (8): 7553-7575. 2020.
    We study the representation of attitudes to risk in Jeffrey’s decision-theoretic framework suggested by Stefánsson and Bradley :602–625, 2015; Br J Philos Sci 70:77–102, 2017) and Bradley :231–248, 2016; Decisions theory with a human face, Cambridge University Press, Cambridge, 2017). We show that on this representation, the value of any prospect may be expressed as a sum of two components, the prospect’s instrumental value and the prospect’s intrinsic value. Both components have an expectationa…Read more
  •  107
    The Value of Chance and the Satisfaction of Claims
    Journal of Philosophy 116 (9): 469-493. 2019.
    A new explanation for the fairness of lotteries is presented. The explanation draws on elements of John Broome's and Richard Bradley's accounts, but is distinct from both of them. I start with Broome's idea that the fairness of lotteries has something to do with satisfying claims in a way which is proportional to their strength. I present an intuitive explication of
  •  82
    Nudging in the clinic: the ethical implications of differences in doctors’ and patients’ point of view
    with David Avitzour
    Journal of Medical Ethics 45 (3): 183-189. 2019.
    There is an extensive ethical debate regarding the justifiability of doctors nudging towards healthy behaviour and better health-related choices. One line of argument in favour of nudging is based on empirical findings, according to which a healthy majority among the public support nudges. In this paper, we show, based on an experiment we conducted, that, in health-related choices, people’s ethical attitudes to nudging are strongly affected by the point of view from which the nudge is considered…Read more
  •  71
    Is value under hypothesis value?
    Ergo: An Open Access Journal of Philosophy 5. 2018.
    In the context of two recent yet distinct philosophical debates—over choice under conditions of moral uncertainty and over transformative choices—several philosophers have implicitly adopted a thesis about how to evaluate alternatives of uncertain value. The thesis says that the value a rational agent ought to attach to an alternative under the hypothesis that the value of this alternative is x, ought to be x. I argue that while in some contexts this thesis trivially holds, in the context of the…Read more
  •  72
    I present a puzzle about the epistemic role beliefs about experts' beliefs play in a rational agent's system of beliefs. It is shown that accepting the claim that an expert's degree of belief in a proposition, A, screens off the evidential support another proposition, B, gives to A in case the expert knows and is certain about whether B is true, leads in some cases to highly unintuitive conclusions. I suggest a solution to the puzzle according to which evidential screening off is rejected, but s…Read more
  •  646
    A pragmatic argument against equal weighting
    Synthese 196 (10): 4211-4227. 2019.
    We present a minimal pragmatic restriction on the interpretation of the weights in the “Equal Weight View” regarding peer disagreement and show that the view cannot respect it. Based on this result we argue against the view. The restriction is the following one: if an agent, $$\hbox {i}$$ i, assigns an equal or higher weight to another agent, $$\hbox {j}$$ j,, he must be willing—in exchange for a positive and certain payment—to accept an offer to let a completely rational and sympathetic $$\hbox…Read more
  •  449
    The paper discusses the notion of reasoning with comparative moral judgements (i.e judgements of the form “act a is morally superior to act b”) from the point of view of several meta-ethical positions. Using a simple formal result, it is argued that only a version of moral cognitivism that is committed to the claim that moral beliefs come in degrees can give a normatively plausible account of such reasoning. Some implications of accepting such a version of moral cognitivism are discussed.
  •  114
    It is well known that there is a conflict between three intuitive principles for the evaluation of risky prospects in distributional contexts, Ex-Post Egalitarianism, Ex-Ante Pareto and Dominance. In this paper, I return to Peter Diamond’s suggestion that we reject Dominance as a principle of rationality in distributional contexts and present a new argument in support of this position. The argument is based on an observation regarding the right way for a distributor to weigh reasons for actions.…Read more
  •  33
    Can an irrational agent reason himself to rationality?
    Working Papers- The Choice Group. 2010.
    When an agent that accepts transitivity of preferences as a principle of rationality finds himself expressing intransitive preferences, he has to change some of his expressed preferences so that transitivity will be restored. When such an agent also believes in the existence of some independent betterness relation among the alternatives over which he forms his preferences, it is reasonable to demand that the way he changes his intransitive expressed preferences will be sensitive to his beliefs r…Read more
  •  11
    I argue for the falsity of what I call the "Admissibility of Historical Information Thesis". According to the AHIT propositions that describe past events are always admissible with respect to propositions that describe future events. I first demonstrate that this demand has some counter-intuitive implications and then argue that the source of the counter-intuitiveness is a wrong understanding of the concept of chance. I also discuss the relation between the failure of the AHIT and the existence …Read more
  •  59
    Doing the best one can: a new justification for the use of lotteries
    Erasmus Journal for Philosophy and Economics 5 (1): 45-72. 2012.
    : In some cases in which rational and moral agents experience moral uncertainty, they are unable to assign exact degrees of moral value—in a non-arbitrary way—to some of the different acts available to them, and so are unable to choose with certainty the best act. This article presents a new justification for the use of lotteries in this kind of situation. It is argued that sometimes the only rational thing for a morally motivated agent to do here is to use a lottery
  •  233
    I show that David Lewis’s principal principle is not preserved under Jeffrey conditionalization. Using this observation, I argue that Lewis’s reason for rejecting the desire as belief thesis and Adams’s thesis applies also to his own principal principle. 1 Introduction2 Adams’s Thesis, the Desire as Belief Thesis, and the Principal Principle3 Jeffrey Conditionalization4 The Principal Principles Not Preserved under Jeffrey Conditionalization5 Inadmissible Experiences
  •  39
    On the Inadmissibility of Some Historical Information
    Philosophy and Phenomenological Research 97 (2): 479-493. 2017.
    I argue—from a Humean perspective—for the falsity of what I call the “Admissibility of Historical Information Thesis”. According to the AHIT, propositions that describe past events are always admissible with respect to propositions that describe future events. I first demonstrate that this thesis has some counter-intuitive implications and argue that a Humean can explain the intuitive attractiveness of the AHIT by arguing that it results from a wrong understanding of the concept of chance. I the…Read more
  •  91
    Newcomb meets Gettier
    Synthese 194 (12): 4799-4814. 2017.
    I show that accepting Moss’s claim that features of a rational agent’s credence function can constitute knowledge, together with the claim that a rational agent should only act on the basis of reasons that he knows, predicts and explains evidential decision theory’s failure to recommend the right choice for the Newcomb problem. The Newcomb problem can be seen, in light of Moss’s suggestion, as a manifestation of a Gettier case in the domain of choice. This serves as strong evidence for both Moss…Read more
  •  178
    Against Moral Hedging
    Economics and Philosophy (3): 1-21. 2015.
    It has been argued by several philosophers that a morally motivated rational agent who has to make decisions under conditions of moral uncertainty ought to maximize expected moral value in his choices, where the expectation is calculated relative to the agent's moral uncertainty. I present a counter-example to this thesis and to a larger family of decision rules for choice under conditions of moral uncertainty. Based on this counter-example, I argue against the thesis and suggest a reason for it…Read more
  •  99
    A triviality result for the “Desire by Necessity” thesis
    Synthese 192 (8): 2535-2556. 2015.
    A triviality result for what Lewis called “the Desire by Necessity Thesis” and Broome : 265–267, 1991) called “the Desire as Expectation Thesis” is presented. The result shows that this thesis and three other reasonable conditions can be jointly satisfied only in trivial cases. Some meta-ethical implications of the result are discussed. The discussion also highlights several issues regarding Lewis ’ original triviality result for “the Desire as Belief Thesis” that have not been properly understo…Read more