In this paper, I argue for two theses. First, if Christianity is true, then morality should depend on the metaphysics of the afterlife. Second, if Christianity is true, then contemporary moral theory is mistaken. The argument for the first thesis rests on two premises. If rightness depends on an act’s effects on an individual, then—at least in part—it depends on the long-term effects on him. If rightness depends—at least in part—on the long-term effects on an individual, then it depends on (...) the metaphysics of the afterlife. The argument for the second thesis rests on how heaven or hell swamp other considerations. By changing assumptions about the nature of heaven or hell, who goes there, and standard mathematics, we end up with different ethical theories. Some of these assumptions conflict with contemporary moral theory regarding killing, letting die, and saving. (shrink)

One of the standard approaches to the metaphysics of personal identity has some counter‐intuitive ethical consequences when combined with maximising consequentialism and a plausible (though not uncontroversial) doctrine about aggregation of consequences. This metaphysical doctrine is the so‐called ‘multiple occupancy’ approach to puzzles about fission and fusion. It gives rise to a new version of the ‘utility monster’ problem, particularly difficult problems about infinite utility, and a new version of a Parfit‐style ‘repugnant conclusion’. While the article focuses on maximising consequentialism (...) for simplicity, the problems demonstrated apply more widely to a range of ethical views, especially flavours of consequentialism. This article demonstrates how these problems arise, and discusses a number of options available in the light of these problems for a consequentialist tempted by a multiple occupancy metaphysics. (shrink)

The principle that rational agents should maximize expected utility or choiceworthiness is intuitively plausible in many ordinary cases of decision-making under uncertainty. But it is less plausible in cases of extreme, low-probability risk (like Pascal's Mugging), and intolerably paradoxical in cases like the St. Petersburg and Pasadena games. In this paper I show that, under certain conditions, stochastic dominance reasoning can capture most of the plausible implications of expectational reasoning while avoiding most of its pitfalls. Specifically, given sufficient background uncertainty (...) about the choiceworthiness of one's options, many expectation-maximizing gambles that do not stochastically dominate their alternatives "in a vacuum" become stochastically dominant in virtue of that background uncertainty. But, even under these conditions, stochastic dominance will not require agents to accept options whose expectational superiority depends on sufficiently small probabilities of extreme payoffs. The sort of background uncertainty on which these results depend looks unavoidable for any agent who measures the choiceworthiness of her options in part by the total amount of value in the resulting world. At least for such agents, then, stochastic dominance offers a plausible general principle of choice under uncertainty that can explain more of the apparent rational constraints on such choices than has previously been recognized. (shrink)

A common argument for atheism runs as follows: God would not create a world worse than other worlds he could have created instead. However, if God exists, he could have created a better world than this one. Therefore, God does not exist. In this paper I challenge the second premise of this argument. I argue that if God exists, our world will continue without end, with God continuing to create value-bearers, and sustaining and perfecting the value-bearers he has already created. (...) Given this, if God exists, our world—considered on the whole—is infinitely valuable. I further contend that this theistic picture makes our world's value unsurpassable. In support of this contention, I consider proposals for how infinitely valuable worlds might be improved upon, focusing on two main ways—adding value-bearers and increasing the value in present value-bearers. I argue that neither of these can improve our world. Depending on how each method is understood, either it would not improve our world, or our world is unsurpassable with respect to it. I conclude by considering the implications of my argument for the problem of evil more generally conceived. (shrink)

Assume consequentialism and assume moral properties are causally efficacious. Then, I’ll argue, a puzzle arises. These assumptions lead to denying each of two plausible metaphysical principles: that a cause cannot cause anything occurring before its ground and that a cause cannot cause anything belonging to its ground. We therefore have to reject either consequentialism or the causal efficacy of moral properties or the plausible metaphysical principles. And, I’ll show, the puzzle arises again even if we replace moral properties with the (...) non-moral properties making things right. Which component to reject is a question for another occasion: my aim here is to present the puzzle. It is a puzzle worth thinking about: no matter how we solve it, we stand to learn something, be it in normative ethics, metaethics, or metaphysics. And, I’ll suggest at the end of the paper, my arguments can be applied to other domains as well. (shrink)

Here's one piece of practical reasoning: "If I do this then a person will reap some benefits and suffer some costs. On balance, the benefits outweigh the costs. So I ought to do it." Here's another: "If I do this then one person will reap some benefits and another will suffer some costs. On balance, the benefits to the one person outweigh the costs to the other. So I ought to do it." Many influential philosophers say that there is something (...) dubious about the second piece of reasoning. They say that it makes sense to trade-off costs and benefits within lives, but not across lives. In this paper I make a case for the second piece of reasoning. My case turns on the existence of morphing sequences—sequences of possible states of affairs across which people transform smoothly into other people. (shrink)