According to Shelly Kagan, the moral status of an individual is determined by the extent to which the individual has (has now, might/will have, or could have had) certain psychological capacities. Roughly speaking, the greater one's relevant psychological capacities, the higher their moral status. In this paper, I offer a twofold critique of Kagan's hierarchicalism. On the one hand, I argue against the primary argument in favor of Kagan's view (the argument from distribution) by challenging the key intuition on which the argument relies, thereby reducing the appeal of Kagan's position. On the other hand, using Kagan's general methodology, I argue that a good reason to reject Kagan's account of moral status is that he fails to explain away the counterintuitive result of his theory in the case of normal variation.

In the future, when we compare the welfare of a being of one substrate (say, a human) with the welfare of another (say, an artificial intelligence system), we will be making an intersubstrate welfare comparison. In this paper, we argue that intersubstrate welfare comparisons are important, difficult, and potentially tractable. The world might soon contain a vast number of sentient or otherwise significant beings of different substrates, and moral agents will need to be able to compare their welfare levels. However, this work will be difficult, because we lack the same kinds of commonalities across substrates that we have within them. Fortunately, we might be able to make at least some intersubstrate welfare comparisons responsibly in spite of these issues. We make the case for cautious optimism and call for more research.

As biological organisms, we age and, eventually, die. However, age’s deteriorating effects may not be universal. Some theoretical entities, due to their synthetic composition, could exist independently from aging—artificial general intelligence (AGI). With adequate resource access, an AGI could theoretically be ageless and would be, in some sense, immortal. Yet, this need not be inevitable. Designers could imbue AGIs with artificial mortality via an internal shut-off point. The question, though, is, should they? Should researchers curtail an AGI’s potentially endless lifespan by deliberately making it mortal? It is this question that this article explores. First, it considers what type of AGI is under discussion before outlining how such beings could be ageless. Then, after clarifying the type of immortality under discussion and arguing that imbuing an AGI with synthetic aging would be person-affecting, the article explores four core conundrums: (i) deliberately causing a morally significant being’s death; (ii) immortality’s associated harms; (iii) concerns about immortality’s unequal assignment; and (iv) the danger of immortal AGI overlords. The article concludes that while prudence requires we create an aging AGI, in the face of the material harm such an action would constitute, this is an insufficient reason to justify doing so.

We are sometimes unsure of the moral status of our relationships with other entities. Recent case studies in this uncertainty include our relationships with artificial agents (robots, assistant AI, etc.), animals, and patients with “locked-in” syndrome. Do these entities have basic moral standing? Could they count as true friends or lovers? What should we do when we do not know the answer to these questions? An influential line of reasoning suggests that, in such cases of moral uncertainty, we need meta-moral decision rules that allow us to either minimize the risks of moral wrongdoing or improve the choice-worthiness of our actions. One particular argument adopted in this literature is the “risk asymmetry argument,” which claims that the risks associated with accepting or rejecting some moral facts may be sufficiently asymmetrical as to warrant favoring a particular practical resolution of this uncertainty. Focusing on the case study of artificial beings, this article argues that this is best understood as an ethical-epistemic challenge. The article argues that taking potential risk asymmetries seriously can help resolve disputes about the status of human–AI relationships, at least in practical terms (philosophical debates will, no doubt, continue); however, the resolution depends on a proper, empirically grounded assessment of the risks involved. Being skeptical about basic moral status, but more open to the possibility of meaningful relationships with such entities, may be the most sensible approach to take.

The possibility of consciousness in human brain organoids is sometimes viewed as determinative in terms of the moral status such entities possess, and, in turn, in terms of the research protections such entities are due. This commonsense view aligns with a prominent stance in neurology and neuroscience that consciousness admits of degrees. My paper outlines these views and provides an argument for why this picture of correlating degrees of consciousness with moral status and research protections is mistaken. I then provide an alternative account of the correlation between moral status and consciousness, and consider the epistemic ramifications for research protections of this account.

The article provides a philosophical explication of an African religious moral philosophy. Often philosophers repudiate the view that African Traditional Religions (ATR) can embody a religious moral philosophy. Theologians, on the other hand, tend to believe that ATR can, but they often do not provide a systematic account of such an ethical system. The article demonstrates that ATR can embody an under-explored moral philosophy. ATR refers to indigenous religious ideas, beliefs, and practices of the indigenous people below the Sahara. The article will invoke the metaphysical and moral concept of vitality as the basis to construct an African religious moral philosophy. (It is worth noting that this article merely constructs, but it does not defend, this ethical system.) Vitality is the spiritual energy that originates, maximally inheres and defines God, and God has since distributed it to all that exists, albeit in varying degrees. By ‘moral philosophy’, the article focuses on (1) meta-ethics (it proffers a vitality-based account of the moral terms right and wrong); (2) normative theory (it expounds on the perfectionist and deontological principles of right action); and (3) applied ethics (it invokes a vitality-based conception of moral status to explore environmental ethics and select bioethical themes).

Moral equality—the idea that ‘we’ all have equal moral worth, our interests ought to count for the same, and we possess the same bundle of basic rights—is one of the most central principles of liberal thought, being regularly drawn on as a presupposition of moral and political inquiry. Perhaps because it is so often relied on as a presupposition, however, moral equality is more often assumed than argued for. When moral equality is argued for, the most common tactic is to appeal to some inherent property. As is well established, however, such property-based defenses of moral equality face two significant challenges: the problem of exclusion and the problem of inequality. In light of these challenges, in this article I put forward a new, revisionist account of moral equality. Taking inspiration from recent work in the social metaphysics of human kinds, I argue that moral equality ought to be seen as a component of a status that we confer on one another, rather than (grounded in) a property inherent in certain individuals. Conceiving of moral equality this way, I argue, side-steps both the problem of exclusion and the problem of natural equality.

In her important and well-known discussion “On the Moral and Legal Status of Abortion,” Mary Anne Warren regrets that “it is not possible to produce a satisfactory defense of a woman’s right to obtain an abortion without showing that the fetus is not a human being, in the morally relevant sense.” Unlike some more cautious philosophers, Warren thinks that we can definitively demonstrate that the fetus is not a person. In this paper, Warren’s argument is critically examined with a focus especially on the question of the foundation and the boundaries of the moral community. The fundamental thesis of the paper is that Warren’s approach is flawed for at least four reasons: (1) that being a person is not as obviously central to having full moral rights as Warren assumes, (2) that her exclusivism regarding moral status has dubious moral consequences independent of the abortion issue, (3) that it is not clear that a fetus is not a person, even on Warren’s own criteria, and (4) her criteria for personhood are themselves suspect.

Organizations have neither a right to vote nor a right to life. But we can owe them to keep our promises or show them gratitude. So we owe some things to organizations, but not everything we owe to people. What explains this? Individualistic views explain it just in terms of features of organizations’ individual members. Collectivistic views explain it just in terms of features of those organizations. Neither view works. Instead, we need to synthesize these approaches. Some individual interests are distinctively collective. Individuals have an interest in participating in successful collective action. This explains organizations’ apparently fragmented moral status.

The discussion about the moral status of novel beings tends to focus on artificial intelligence, robots, and other man-made systems. We should, however, also consider a likelier kind of novel beings: animals that are genetically modified to develop human-like cognitive capabilities. This paper focuses on the possibility of conferring human characteristics on nonhuman primates (NHPs) in the context of neuroscientific research. It first discusses the use of NHPs for neuroscientific research and then, second, describes recent developments that promise to revolutionize the field and how that may lead to NHPs attaining human-like cognitive capabilities. Third, an account of moral status is developed to ground the central claim, that making the NHP brain more human-like is unproblematic as long as the NHPs do not become persons. In conclusion, this paper discusses the implications for the moral status of cognitively enhanced NHPs, as well as the implications for other novel beings.

Embodiment is typically given insufficient weight in debates concerning the moral status of Novel Synthetic Beings (NSBs) such as sentient or sapient Artificial Intelligences (AIs). Discussion usually turns on whether AIs are conscious or self-aware, but this does not exhaust what is morally relevant. Since moral agency encompasses what a being wants to do, the means by which it enacts choices in the world is a feature of such agency. In determining the moral status of NSBs and our obligations to them, therefore, we must consider how their corporeality shapes their options, preferences, values, and is constitutive of their moral universe. Analysing AI embodiment and the coupling between cognition and world, the paper shows why determination of moral status is only sensible in terms of the whole being, rather than mental sophistication alone, and why failure to do this leads to an impoverished account of our obligations to such NSBs.

Many accounts of the morality of abortion assume that early fetuses must all have or lack moral status in virtue of developmental features that they share. Our actual attitudes toward early fetuses don’t reflect this all-or-nothing assumption. If we start with the assumption that our attitudes toward fetuses are accurately tracking their value, then we need an account of fetal moral status that can explain why it is appropriate to love some fetuses but not others. I argue that a fetus can come to have moral claims on persons who have taken up the activity of person-creation.

I defend a form of humanism on which we have reason to care about human beings that we do not have to care about other animals, and human beings have rights against us that other animals lack. Humanism respects the equal worth of those born with severe congenital cognitive disabilities. I address the charge of speciesism and explain how being human is an ethically relevant fact.

I show that an overlooked feature of our moral life—moral status—provides a route to vindicating naturalist moral realism in much the same way that the Humean theory of motivation and judgment internalism are used to undermine it. Moral status presents two explanatory burdens for metaethical views. First, a given view must provide an ecumenical explanation of moral status, which does not depend on the truth of its metaethical claims (say, that there are mind-independent facts about moral status). Second, its explanation must be consistent with persistent normative ethical disagreement about what constitutes moral status. I conclude that naturalist moral realism succeeds, while quasi-realism fails because it cannot meet the latter requirement. This argument has three results: we have a new route for metaethical vindication more generally and for naturalist moral realism in particular; quasi-realism's plausibility is undermined by an inability to explain disagreement, but not for the familiar reasons.