The environmental crisis challenges the adequacy of traditional moral theories, particularly in the case of act consequentialism – the view that an act is morally right if and only if it brings about the best available outcome. Although anthropogenic climate change threatens the well-being of billions of humans and trillions of non-human animals, it is difficult for an act consequentialist to condemn actions that contribute to it, as each individual action makes no difference to the probability of whether climate change (...) will occur. Or so one argument goes. This chapter examines the limits and possibilities of a consequentialist approach to climate ethics. It discusses various types of consequentialist theories applicable to the current environmental situation. It outlines outcome-based strategies to address the no-difference problem and to promote individual climate action. Finally, it considers environmental cases of evaluative uncertainty and how a consequentialist could deal with them. (shrink)

Normativity is widely regarded as the ability to make evaluative judgments based on a shared system of social norms. When normativity is viewed through the cognitively demanding lens of human morality, however, the prospect of finding social norms innonhuman animals rapidly dwindles and common causal structures are overlooked. In this paper, I develop a biofunctionalist account of social normativity and examine its implications for how we ought to conceptualize, explain, and study social norms in the wild. I propose that we (...) think of social normative systems as behavior-regulatory power structures that resolve conflicts between nested levels of selection in favor of the higher level. I argue that the best case for social norms outside of humans is not in the animals one might expect, such as primates or other large-brained vertebrates, but rather in social insects. Finally, I engage with a number of potential objections to this unorthodox proposal. (shrink)

Social norms are commonly understood as rules that dictate which behaviors are appropriate, permissible, or obligatory in different situations for members of a given community. Many researchers have sought to explain the ubiquity of social norms in human life in terms of the psychological mechanisms underlying their acquisition, conformity, and enforcement. Existing theories of the psychology of social norms appeal to a variety of constructs, from prediction-error minimization, to reinforcement learning, to shared intentionality, to domain-specific adaptations for norm acquisition. In (...) this paper, we propose a novel methodological and conceptual framework for the cognitive science of social norms that we call normative pluralism. We begin with an analysis of the explanatory aims of the cognitive science of social norms. From this analysis, we derive a recommendation for a reformed conception of its explanandum: a minimally psychological construct that we call normative regularities. Our central empirical proposal is that the psychological underpinnings of social norms are most likely realized by a heterogeneous set of cognitive, motivational, and ecological mechanisms that vary between norms and between individuals, rather than by a single type of process or distinctive norm system. This pluralistic approach, we suggest, offers a methodologically sound point of departure for a fruitful and rigorous science of social norms. (shrink)

One of the primary concerns in animal research is ensuring the welfare of laboratory animals. Modern views on animal welfare emphasize the role of animal sentience, i.e. the capacity to experience subjective states such as pleasure or suffering, as a central component of welfare. The increasing official recognition of animal sentience has had large effects on laboratory animal research. The Cambridge Declaration on Consciousness (Low et al., University of Cambridge, 2012) marked an official scientific recognition of the presence of sentience (...) in mammals, birds, and cephalopods. Animal sentience has furthermore been recognized in legislation in the European Union, UK, New Zealand and parts of Australia, with discussions underway in other parts of the world to follow suit. In this paper, we analyze this shift towards recognition of sentience in the regulation and practice in the treatment of laboratory animals and its effects on animal welfare and use. (shrink)

Plant biologists widely accept plants demonstrate capacities for intelligence. However, they disagree over the interpretive, ethical and nomenclatural questions arising from these findings: how to frame the issue and how to signify the implications. Through the trope of ‘plant neurobiology’ describing plant root systems as analogous to animal brains and nervous systems, plant intelligence is mobilised to raise the status of plants. In doing so, however, plant neurobiology accepts an anthropocentric moral extensionist framework requiring plants to anthropomorphically meet animal standards (...) to be deserving of moral respect. I argue this strategy is misguided because moral extensionism is an erroneous ontological foundation for ethics. (shrink)

We have structured our response according to five questions arising from the commentaries: (i) What is sentience? (ii) Is sentience a necessary or sufficient condition for moral standing? (iii) What methods should guide comparative cognitive research in general, and specifically in studying invertebrates? (iv) How should we balance scientific uncertainty and moral risk? (v) What practical strategies can help reduce biases and morally dismissive attitudes toward invertebrates?

The Animal Rights Thesis (ART) entails that nonhuman animals like pigs and cows have moral rights, including rights not to be unjustly harmed. If ART is true, it appears to imply the permissibility of killing ranchers, farmers, and zookeepers in defense of animals who will otherwise be unjustly killed. This is the Militancy Objection (MO) to ART. I consider four replies to MO and reject three of them. First, MO fails because animals lack rights, or lack rights of sufficient strength (...) to justify other-defensive killing. Second, MO fails because those who unjustly threaten animals aren't liable or, if they are liable, their liability is outweighed by other considerations (e.g., a strong presumption against vigilante killing). I then argue both of these fail. Third, MO succeeds because animal militancy is permissible. Fourth, MO fails because there aren't liability justifications for defensive killing in general (i.e., pacifism is true). I argue that there's thoroughgoing epistemic parity between the Militancy View (MV) and the Pacifist View (PV), and that two considerations favor PV over MV. First, because under conditions of uncertainty, we should believe rights-bearers retain rather than lose their rights, which PV affirms and MV denies. Second, because PV is intrinsically likelier than MV to be true since PV at worst affirms wrongful letting die and MV at worst affirms wrongful killing, the latter of which is intrinsically harder to justify than the former. (shrink)

I discuss whether "sentience" (i.e., phenomenal consciousness) comes in degrees.

—Commentary on Mikhalevich and Powell on invertebrate minds.— Whether or not arthropods are sentient, they can have moral standing. Appeals to sentience are not necessary and retard progress in human treatment of other species, including invertebrates. Other increasingly well-documented aspects of invertebrate minds are pertinent to their welfare. Even if arthropods are not sentient, they can be agents whose goals—and therefore interests—can be frustrated. This kind of agency is sufficient for moral status and requires that we consider their welfare.

Mikhalevich & Powell are to be commended for challenging the “invertebrate dogma” that invertebrates are unworthy of ethical concern. However, developing an evolutionarily inclusive ethics requires facing some of the more radical implications of rejecting hierarchical scala naturae and human-centered conceptions of the biological world. In particular, we need to question the anthropocentric assumptions that still linger in discussions like these.

Mikhalevich & Powell (2020) argue that it is wrong, both scientifically and morally, to dismiss the evidence for sentience in invertebrates. They do not offer any examples, however, of how their welfare should be considered or improved. We draw on animal welfare science to suggest some ways that would not be excessively demanding.

We welcome Mikhalevich & Powell’s (2020) (M&P) call for a more “‘inclusive”’ animal ethics, but we think their proposed shift toward a moral framework that privileges false positives over false negatives will require radically revising the paradigm assumption in animal research: that there is a clear line to be drawn between sentient beings that are part of our moral community and nonsentient beings that are not.

In their target article, Mikhalevich & Powell (M&P) argue that we should extend moral protection to arthropods. In this commentary, we show that there are some unforeseen obstacles to applying the sort of individualistic welfare-based ethics that M&P have in mind to certain arthropods, namely, insects. These obstacles have to do with the fact that there are often many more individuals involved in our dealings with insects than our ethical theories anticipate, and also with the fact that, in some sense, (...) some insects count as more than an individual and, in another sense, they sometimes count as less than an individual. (shrink)

I commend Mikhalevich & Powell for extending the discussion of cognition and its relation to moral status with their well researched and argued target article on invertebrate cognition. I have two small criticisms: that the scala naturae still retains its appeal to some in biology as well as psychology, and that drawing the line at invertebrates requires a bit more defense given the larger comparative cognitive-scientific context.

In the last two decades, there has been a blossoming literature aiming to counter the neglect of plant capacities. In their recent paper, Miguel Segundo-Ortin and Paco Calvo begin by providing an overview of the literature to then question the mistaken assumptions that led to plants being immediately rejected as candidates for sentience. However, it appears that many responses to their arguments are based on the implicit conviction that because animals have far more sophisticated cognition and agency than plants, and (...) that plants should not have the same moral status as animals, plants should not have any moral status. Put in simpler terms: it is not as bad to eat plants than to eat, say, pigs. While there are still uncertainties around comparative moral and policy implications between animals and plants, given a gradualist account of quasi-sentience and partial moral status, both of which we claim are a matter of degree, we may not have to abolish our convictions by declaring that plants have no sentience or moral status at all. Indeed, we can hold two things at the same time: that animals and plants have moral status, but animals have prima facie more moral status than plants. (shrink)

Sentience, as the capacity to feel pleasure and pain, is often understood as a property of an organism, and the main problem is to determine whether an organism possesses this property or not. This is not just an armchair worry. Sentient ethics grounds its normative prescriptions on sentience, so assessing if an organism possesses sentience is crucial for ethical reasoning and behaviour. Assessing if it is the case is far from simple and there is no stable agreement about it. This (...) is the problem of sentience. In this paper, I argue that there is a problem intrinsic to the problem of sentience. I call it the “metaproblem of sentience”. I claim that the assumptions that underlie the concept of sentience are what create the “problem of sentience”. In the first part of the paper, I list and describe these assumptions and show how they create the problem of sentience in sentient ethics. In the second part, I offer enactive and pragmatist tools, namely real doubt (Peirce, In: Kloesel C (ed) Writings of Charles S. Peirce: A Chronological Edition, vol. 3. Bloomington: Indiana University Press, 1986) and loving epistemology (De jaegher, Phenomenol Cogn Sci 20:847–870. https://doi.org/10.1007/s11097-019-09634-5, 2019), for tackling the problem of sentience. I advance a participatory account of sentience and show of relevance of the transcendental argument (Weber and Varela, Phenomenol Cogn Sci, 1:97–125, 2002; Weber, Natur als Bedeutung: Versuch Einer Semiotischen Ästhetik Des Lebendigen. Königshausen & Neumann, 2003; Thompson, Mind in life: Biology, Phenomenology, and the sciences of mind. Harvard University Press, 2007) in ethical discourse. My own contribution is that the transcendental argument should be understood in a relational manner, from the experience of participatory sentience. So it is not just that life can be known only by life. Life can be cared for only by life. So, as in sentient ethics, it is out of my concern for sentient begins that I need to care for them. But, distinct from sentient ethics, may approach to participatory sentience would push to known sentience from how I care for sentient begins, from how I engage with them, from how I take part in their life. I conclude by stressing the significance of a participatory ethics of sentience. (shrink)

Entry for the Stanford Encylcopedia of Philosophy.

Feinberg and Mallatt, in their presentation of neurobiological naturalism, have suggested that visual consciousness was acquired by early vertebrates and inherited by a wide range of descendants, and that its neural basis has shifted to nonhomologous nervous structures during evolution. However, their evolutionary scenario of visual consciousness relies on the assumption that visual consciousness is closely linked with survival, which is not commonly accepted in current consciousness research. We suggest an alternative idea that visual consciousness is linked to a specific (...) class of agency, consequently justifying their phylogenetic claim. We also examine the implication of their phylogenetic claim: visual consciousness is homologous across vertebrates, but its neural basis is not. This apparent incongruence illustrates a general phenomenon of homology, and that the resulting hierarchical view of visual consciousness and its neural basis can be straightforwardly accommodated by neurobiological naturalism. Throughout these discussions, we aim to address the potential theoretical issues in neurobiological naturalism and refine the picture illustrated by Feinberg and Mallatt regarding phylogenetic distribution and trajectories of visual consciousness. (shrink)

This paper argues that existing human-animal relations contribute to the pressing socio-ecological crises of our time, and therefore, they should be discussed in the context of Sustainable Development. This holds true even from a purely anthropocentric perspective, as these crises are threats to humans. However, sentient nonhuman animals possess interests as well and should be included in the moral community. Therefore, ignoring their interests in Sustainable Development is falling short. Furthermore, the paper argues that the anthropocentric perspective of Sustainable Development (...) is flawed because the normative foundations of Sustainable Development (intra- and intergenerational justice) can be convincingly applied to nonhuman animals. According to approaches of interspecies justice, the normative foundations of Sustainable Development not merely can but should be applied to nonhuman animals. The paper argues for including nonhuman animals into the scope of justice and, therefore, in a theory of Sustainable Development. What such inclusion means at the practical level is examined in the last section of the paper, which investigates a field of application important for transforming societies into more sustainable ones, namely energy systems. This last section discusses how more sustainable, more animal-friendly energy systems would look like. (shrink)

To provide a theoretical basis for the common view that moral status comes in degrees, many philosophers endorse ‘two-factor’ accounts of the foundations of moral status. These accounts postulate one or more properties which endow individuals with moral status, and one or more other properties which increase the moral status of those who possess them. Critical assessment of two-factor accounts has focused on their implications, especially for humans who lack the properties thought to increase individuals’ moral status. Unfortunately, this approach (...) has led to an impasse. To try to break it, the present manuscript instead assesses the assumption on which two-factor accounts are based, namely, possession of one or more properties, what I call ‘moral status enhancing’ properties, increases their possessors’ moral status. I argue that two challenges, the problem of relevance and the need for a threshold, reveal that there are no moral status enhancing properties, hence, no degrees of moral status among those who matter morally. (shrink)

As mariculture—the cultivation of aquatic organisms in marine environment—intensifies to meet the demands of sustainable blue growth and national policies, novel ethical challenges will arise. In the context of ethics, primary concerns over aquaculture and mariculture tend to stay within differing value-based perspectives focused on benefits to human and non-human subjects, specifically animal welfare and animal rights. Nonetheless, the burgeoning field of feminist blue humanities provides ethical considerations that extend beyond animal subjects (including humans), often because of its concerns with (...) new materialist, posthumanist, and other relations-based theories. This article examines feminist blue humanities and the contributions it may bring to understanding contemporary and future ethical challenges posed by mariculture and its intensification, especially the cultivation of low-trophic organisms. By offering an overview of feminist blue humanities, this article explores some of its particularities by drawing out three major ethical concerns facing contemporary mariculture, specifically material reconfigurations, radical alteration of the lives of low-trophic species through industrialization and increases in maricultural waste products. (shrink)