The actions performed by individuals, as consumers and citizens, have aggregate negative consequences for the environment. The question asked in this paper is to what extent it is reasonable to hold individuals and institutions responsible for environmental problems. A distinction is made between backward-looking and forward-looking responsibility. Previously, individuals were not seen as being responsible for environmental problems, but an idea that is now sometimes implicitly or explicitly embraced in the public debate on environmental problems is that individuals are appropriate (...) targets for blame when they perform actions that are harmful to the environment. This idea is criticized in this paper. It is argued that instead of blaming individuals for performing actions that are not environmentally friendly we should ascribe forward-looking responsibility to individuals, a notion that focuses more on capacity and resources than causation and blameworthiness. Furthermore, it is important to emphasize that a great share of forward-looking responsibility should also be ascribed to institutional agents, primarily governments and corporations. The urge to ascribe forward-looking responsibility to institutional agents is motivated by the efficiency aim of responsibility distributions. Simply put, if responsibility is ascribed to governments and corporations there is a better chance of creating a society in which the opportunities to act in an environmentally friendly way increase. (shrink)

In contrast to medical care, which is focused on the individual patient, public health is focused on collective health. This article argues that, in order to better protect the individual, discussions of public health would benefit from incorporating the insights of virtue ethics. There are three reasons to for this. First, the collective focus may cause neglect of the effects of public health policy on the interests and rights of individuals and minorities. Second, whereas the one-on-one encounters in medical care (...) facilitate a compassionate and caring attitude, public health involves a distance between professionals and the public. Therefore, public health professionals must use imagination and care to evaluate the effects of policies on individuals. Third, the relationship between public health professionals and the people who are affected by the policies they design is characterized by power asymmetry, demanding a high level of responsibility from those who wield them. Against this background, it is argued that public health professionals should develop the virtues of responsibility, compassion and humility. The examples provided, i.e. breastfeeding information and vaccination policy, illustrate the importance of these virtues, which needed for normative as well as instrumental reasons, i.e. as a way to restore trust. (shrink)

Public health ethics is commonly analyzed within a consequentialist or rights-based perspective, but recent approaches explore public health from a virtue ethical perspective. Rozier focuses on the virtues of individual members of the public and I discuss public health professionals. MacKay emphasizes the role of the collective level, the practice and social structure of public health. The structure can be important in two ways. First, it potentially affects the cultivation of the virtues of individuals. Second, the structure itself could have (...) virtues. MacKay defends the latter notion and argues that structures become objective reality that is non-reducible to individuals. She implicitly describes public health as an actor, as having hopes and aspirations. MacKay’s account is an interesting contribution to the field. I agree with that the social structure is important but argue that it is primarily important in relation to the cultivation of individual virtues. Public health is not an agent and if it is described as such, it needs a supporting argument concerning moral group agency. I argue that there are no collectives without individuals. Future studies should focus on the links between the individual and social levels and discuss which virtues are the most important. (shrink)

Traditionally, the management of technology has focused on the stages before or after development of technology. In this approach the technology itself is conceived as the result of a deterministic enterprise; a result that is to be either rejected or embraced. However, recent insights from Science and Technology Studies (STS) have shown that there is ample room to modulate technology during development. This requires technology managers and engineering ethicists to become more involved in the technological research rather than assessing it (...) from an outsider perspective. Instead of focusing on the question whether or not to authorize, approve, or adopt a certain technology or on the question of who is to blame for potential mistakes, the guiding question in this new approach is how research is to be carried out. (shrink)

Risks, including health and technological, attract a lot of attention in modern societies, from individuals as well as policy-makers. Human beings have always had to deal with dangers, but contemporary societies conceptualise these dangers as risks, indicating that they are to some extent controllable and calculable. Conceiving of dangers in this way implies a need to analyse how we hold people responsible for risks and how we can and should take responsibility for risks. Moral Responsibility and Risk in Societycombines philosophical (...) discussion of different concepts and notions of responsibility with context-specific applications in the areas of health, technology and environment. The book consists of two parts addressing two crucial aspects of risks and responsibility: holding agents responsible, i.e. ascribing and distributing responsibility for risks and taking responsibility for risk. More specifically, the book discusses the values of fairness and efficacy in responsibility distributions and makes distinctions between backward-looking and forward-looking responsibility as well as individual and collective responsibility. Additionally, it analyses what it means to take responsibility for technological risks, conceptualizing this kind of responsibility as a virtue, and furthermore, explores the notion of responsible risk communication and the implications for adult-child relationships. This book will be of great interest to students and scholars of environmental ethics, bioethics, public health ethics, engineering ethics, philosophy of risk and moral philosophy. (shrink)

The COVID-19 pandemic during 2020–2022 raised ethical questions concerning the balance between individual autonomy and the protection of the population, vulnerable individuals and the healthcare system. Pediatric COVID-19 vaccination differs from, for example, measles vaccination in that children were not as severely affected. The main question concerning pediatric vaccination has been whether the autonomy of parents outweighs the protection of the population. When children are seen as mature enough to be granted autonomy, questions arise about whether they have the right (...) to decline vaccination and who should make the decision when parents disagree with each other and/or the child. In this paper, I argue that children should be encouraged to not only take responsibility for themselves, but for others. The discussion of pediatric vaccination in cases where this kind of risk–benefit ratio exists extends beyond the 2020–2022 pandemic. The pandemic entailed a question that is crucial for the future of public health as a global problem, that is, to what extent children should be seen as responsible decision-makers who are capable of contributing to its management and potential solution. I conclude that society should encourage children to cultivate such responsibility, conceived as a virtue, in the context of public health. (shrink)

The general aim of this thesis is to present and analyse traffic safety from an ethical perspective and to explore some conceptual and normative aspects of moral responsibility. Paper I presents eight ethical problem areas that should be further analysed in relation to traffic safety. Paper II is focused on the question of who is responsible for traffic safety, taking the distribution of responsibility adopted through the Swedish policy called Vision Zero as its starting point. It is argued that a (...) distinction should be made between backwardlooking and forward-looking responsibility and that Vision Zero should be understood in terms of this distinction. Paper III discusses responsibility ascriptions in relation to public health problems like obesity and lung cancer. It is argued that what makes discussions about who is responsible for such problems complicated is that we have two aims when ascribing responsibility to someone. First, we want responsibility ascriptions to be fair and morally justified. Second, we also want to achieve progress and solve problems through ascribing responsibility to someone. It is argued that the two aims influence debates concerning who is responsible for problems like obesity and lung cancer and that we should attempt at striking a balance that is both perceived as fair and that is efficient. Paper IV discusses two potential arguments against the suggestion that alcohol interlocks should be mandatory in all cars, namely 1) that it displaces the responsibility of individual drivers, and 2) that it constitutes a paternalistic interference with drivers. The first objection is found unconvincing, while the second only has limited bite and may be neutralized if paternalism is accepted for the sake of greater net liberty. It is argued that if technological development can make mandatory interlocks cost-efficient, the policy seems a commendable public health measure. In Paper V, the question discussed is to what extent individuals should be ascribed moral responsibility for the environmentally damaging consequences of their actions. It is argued that responsibility depends on the reasonableness of the alternatives open to an individual when acting. The lack of reasonable alternatives should reduce the degree of individual responsibility. (shrink)

Women who suffer from fertility issues often use in vitro fertilization (IVF) to realize their wish to have children. However, IVF has its own set of strict administration rules that leave the women physically and emotionally exhausted. Feeling alienated and frustrated, many IVF users turn to internet IVF-centered forums to share their stories and to find information and support. Based on the observation of Dutch and Greek IVF forums and a selection of 109 questionnaires from Dutch and Greek IVF forum (...) users, we investigate the reasons why users of IVF participate in online communities centered on IVF, their need for emotional expression and support, and how they experience and use the information and support they receive through their participation in the online community. We argue that the emotional concerns expressed in such forums should be taken into account by health care ethics committees for IVF-related matters in order to promote more patient-oriented care and support for women going through IVF. (shrink)

Antibiotic resistance (AR) is a major threat to public health and healthcare worldwide. In this article, we analyse and discuss the claim that taking actions to minimize AR is everyone's responsibility, focusing on individual moral responsibility. This should not be merely interpreted as a function of knowledge of AR and the proper use of antibiotics. Instead, we suggest a circumstantial account of individual responsibility for AR, where individuals do or do not engage in judicious antibiotic behaviour with different degrees of (...) voluntariness. Furthermore, we suggest a notion of responsibility as a virtue, in which individuals have the opportunity to develop a sensitivity towards the AR theme and, consequently, are capable of engaging, actively and voluntarily, in judicious antibiotic behaviour. The development of such sensitivity depends on the creation of adequate circumstances, that is individual capacities and availability of resources. (shrink)

Due to the alarming rise of antibiotic resistance, medically unwarranted use of antibiotics has assumed new moral significance. In this paper, a thematic content analysis of focus group discussions was conducted to explore lay people’s views on the moral challenges posed by antibiotic resistance. The most important finding is that lay people are morally sensitive to the problems entailed by antibiotic resistance. Participants saw the decreasing availability of effective antibiotics as a problem of justice. This involves individual as well as (...) collective moral responsibility. Yet, holding agents responsible for their use of antibiotics involves varying degrees of demandingness. In our discussion, these findings are related to the contemporary ethical debate on antibiotic resistance and two proposals for the preservation of antibiotic effectiveness are compared to and evaluated against participants’ views. (shrink)

Most sources providing information on infant feeding strongly recommend breastfeeding. The WHO and UNICEF recommend that women breastfeed their babies and that health professionals promote breastfeeding. This creates severe pressure on women to breastfeed, a pressure which is ethically questionable since many women have physical or emotional problems with breastfeeding. In this article, we use insights from the ethics of risk to criticize the current breastfeeding policy. We argue that there are problems related to balancing aggregate wellbeing versus individual wellbeing, (...) that not enough attention is paid to alternatives, that women’s emotions and their need for free choice should be considered and that issues of equity are currently overlooked. We also criticize the way scientific information is presented in the current policy. We conclude that the official sources of information on infant feeding should be revised. Information should be more nuanced and designed to support mothers, and families in making a free choice on what is the best way to feed their babies. (shrink)

In some situations in which undesirable collective effects occur, it is very hard, if not impossible, to hold any individual reasonably responsible. Such a situation may be referred to as the problem of many hands. In this paper we investigate how the problem of many hands can best be understood and why, and when, it exactly constitutes a problem. After analyzing climate change as an example, we propose to define the problem of many hands as the occurrence of a gap (...) in the distribution of responsibility that may be considered morally problematic. Whether a gap is morally problematic, we suggest, depends on the reasons why responsibility is distributed. This, in turn, depends, at least in part, on the sense of responsibility employed, a main distinction being that between backward-looking and forward-looking responsibility. (shrink)

Drink driving causes great suffering and material destruction. The alcohol interlock promises to eradicate this problem by technological design. Traditional counter-measures to drink driving such as policing and punishment and information campaigns have proven insufficient. Extensive policing is expensive and intrusive. Severe punishment is disproportionate to the risks created in most single cases. If the interlock becomes inexpensive and convenient enough, and if there are no convincing moral objections to the device, it may prove the only feasible as well as (...) the only justifiable solution to the problem of drink driving. A policy of universal alcohol interlocks, in all cars, has been proposed by several political parties in Sweden and is supported by the National Road Administration and the 2006 Alcohol Interlock Commission. This article assesses two possible moral objections to a policy of universal interlocks: (i) that it displaces the responsibility of individual drivers and (ii) that it constitutes a paternalistic interference with drivers. The first objection is found unconvincing, while the second has only limited bite and may be neutralized if paternalism is accepted for the sake of greater net liberty. Given the expected technological development, the proposed policy seems a commendable health promotion measure for the near future. (shrink)

In this short piece, I attempt to respond to some of the challenges raised by Jessica Nihlén Fahlquist and Karen Meagher in their commentaries on my paper, ‘Public Health Virtue Ethics’. While these authors have made many insightful and challenging remarks, I mostly focus on two questions here: first, about the nature of collectives as moral agents, in response to Nihlén Fahlquist, and second, about the concept of a collective-level virtue, in response to Meagher.

RésuméL'ouvrage de Sophia Moreau, Faces of Inequality, adopte une méthodologie philosophique provocatrice. Moreau puise dans les expériences des victimes de discrimination et à même les contours fondamentaux du droit à la non-discrimination afin d’élaborer sa théorie de la discrimination répréhensible. Cependant, si nous prenons au sérieux les enseignements des études féministes et critiques de la « race », une tension émerge au sein de la dyade méthodologique de Moreau : si les lois contre la discrimination sont souvent elles-mêmes source d'hostilité (...) et d'invalidation pour les victimes de discrimination, comment ces expériences et ces lois peuvent-elles toutes deux faire autorité pour déterminer la nature de la discrimination répréhensible? Cet article explore cette tension à l’œuvre dans Faces of Inequality à la lumière de la théorie de la « conscience multiple » de Mari Matsuda. (shrink)

The World Health Organisation declared COVID-19 a global pandemic on 11th March 2020, recognising that the underlying SARS-CoV-2 has caused the greatest global crisis since World War II. In this chapter, we present a framework to evaluate whether and to what extent the use of digital systems that track and/or trace potentially infected individuals is not only legal but also ethical.

Recently, a debate has developed between those who claim that essence can be explained in terms of de re modality (modalists), and those who claim that de re modality can be explained in terms of essence (essentialists). The aim of this paper is to suggest that we should reassess. It is assumed that either necessity is to be accounted for in terms of essence, or that essence is to be accounted for in terms of necessity. I will argue that we (...) should assume neither. I discuss what role these key notions – essence and necessity – can reasonably be thought to contribute to our understanding of the world, and argue that, given these roles, there is no good reason to think that we should give an account of one in terms of the other. I conclude: if we can adequately explain de re modality and essence at all, we should aim to do so separately. (shrink)

In this "for and against" book, ethicists Lori Watson and Jessica Flanigan debate the criminalization of sex work. Watson argues for a sex equality approach to prostitution in which buyers are criminalized and sellers are decriminalized, known as the Nordic Model. Flanigan argues that sex work should be fully decriminalized because decriminalization ensures respect for sex workers' and clients' rights, and is more effective than alternative policies.

Drawing on recent work in formal pragmatic theory, this paper shows that the manipulation of discourse structure—in particular, by way of shifting the Question Under Discussion mid-discourse—can constitute an act of epistemic injustice. I argue that the “All Lives Matter” response to the “Black Lives Matter” slogan is one such case; this response shifts the Question Under Discussion governing the overarching discourse from Do Black lives matter? to Which lives matter? This manipulation of the discourse structure systematically obscures the intended (...) meaning of “Black lives matter” and disincentivizes future utterances of it. (shrink)

Assertion is a fundamental feature of language. This volume will be the place to look for anyone interested in current work on the topic.

O povo Kaingang é o mais populoso do Sul do Brasil e está entre os mais numerosos povos indígenas do país. Neste trabalho faz-se uma relação entre as informações encontradas na literatura e a atualidade na Terra Indígena Kaingang em relação ao conhecimento que possuem sobre o uso de plantas para a cura de doenças e como interpretam a ação da erva no organismo. Para isto, realizou-se uma pesquisa de campo em uma Terra Indígena Kaingang no Paraná, cujo entrevistas forneceram (...) confirmações históricas em relação aos etnoconhecimentos da etnia, da evolução dos aspectos químicos e das atitudes perante a química e os remédios de origem farmacêutica e natural. (shrink)

Introduction : reading Nietzsche skeptically -- Nietzsche and the Pyrrhonian tradition -- Skepticism in Nietzsche's early work : the case of "on truth and lie" -- The question of Nietzsche's "naturalism" -- Perspectivism and Ephexis in interpretation -- Skepticism and health -- Skepticism as immoralism.

Shadow of the Other is a discussion of how the individual has two sorts of relationships with an "other"--other individuals. The first regards the other as a s work apart is her brilliant utilization of a systematic dialectical approach to her subject, always maintaining the delicate balance between opposing tensions: masculinity and femininity, subjectivity and objectivity, passivity and activity, love and aggression, fantasy and reality, modernism and postmodernism, the intrapsychic and the intersubjective. Benjamin s work apart is her brilliant utilization (...) of a systematic dialectical approach to her subject, always maintaining the delicate balance between opposing other as a mental repository fo unwanted characteristics cast from the self. Jessica benjamin shows the implications of this dual relationship for male/female hierarchy and offers a possibility for balancing the two. This book continues the author's well-known explorations of the themes of intersubjectivity and gender, taking up issues at the forefront of contemporary debates in feminist theory and psychoanalysis. (shrink)

Recently, a debate has developed between those who claim that essence can be explained in terms of de re modality (modalists), and those who claim that de re modality can be explained in terms of essence (essentialists). The aim of this paper is to suggest that we should reassess. It is assumed that either necessity is to be accounted for in terms of essence, or that essence is to be accounted for in terms of necessity. I will argue that we (...) should assume neither. I discuss what role these key notions – essence and necessity – can reasonably be thought to contribute to our understanding of the world, and argue that, given these roles, there is no good reason to think that we should give an account of one in terms of the other. I conclude: if we can adequately explain de re modality and essence at all, we should aim to do so separately. (shrink)

When I see a tree through my window, that particular worldly tree is said to be ‘in’, ‘on’, or ‘before’ my mind. My ordinary visual link to it is ‘intentional’. How similar to this link are the links between me and particular worldly trees when I see them in photographs, or in paintings? Are they, in some important sense, links of the same kind? Or are they links of importantly different kinds? Or, as a third possibility, are they at once (...) links of the same important kind and also links of importantly different sub-kinds within that kind? This paper takes up these taxonomical questions. After fleshing out (a bit) the characterisation of these different subject-object links, I explain and expand upon an approach to answering the taxonomical questions originally set out by Kendall Walton. I then follow this approach a certain distance, connecting it with the question of how to mark the boundary between perception and cognition. My investigations support the conclusion that the three types of links just described are not importantly different in kind. (shrink)

A persuasive monograph that answers the keyepistemological arguments against anti-individualism in thephilosophy of mind.

How should physical entities be characterized? Physicalists, who have most to do with the notion, usually characterize the physical by reference to two components: 1. The physical entities are the entities treated by fundamental physics with the proviso that 2. Physical entities are not fundamentally mental (that is, do not individually possess or bestow mentality) Here I explore the extent to which the appeals to fundamental physics and to the NFM (“no fundamental mentality”) constraint are appropriate for characterizing the physical, (...) especially for purposes of formulating physicalism. Ultimately, I motivate and defend a version of an account incorporating both components: The physics-based NFM account: An entity existing at a world w is physical iff (i) it is treated, approximately accurately, by current or future (in the limit of inquiry, ideal) versions of fundamental physics at w, and (ii) it is not fundamentally mental (that is, does not individually either possess or bestow mentality). (shrink)

Knowledge ascriptions are a central topic of research in both philosophy and science. In this collection of new essays on knowledge ascriptions, world class philosophers offer novel approaches to this long standing topic.

Research groups around the world are currently busy trying to invent new life in the laboratory, looking for extraterrestrial life, or making machines increasingly more life-like. In the case of astrobiology, any newly discovered life would likely be very old, but when discovered it would be new to us. In the case of synthetic organic life or life-like machines, humans will have invented life that did not exist before. Together, these endeavors amount to what we call the emerging plurality of (...) lives because we see a future where we are surrounded by, and interact with, life of many different origins, as well as entities that we have not traditionally seen as being alive. In the future these entities will likely possess properties that we so far have only associated with living beings, thereby transcending and perhaps blurring the borders between life and non-life. (shrink)

Prison as a Torturous Institution Philosophers working on torture have largely failed to address the widespread use of torture in the U.S. prison system. Drawing on a victim-focused definition of torture, I argue that the U.S. prison system is a torturous institution in which direct torture occurs (the use of solitary confinement) and in which torture is allowed to occur through the toleration of sexual assault of inmates and the conditions of mass incarceration. The use and toleration of torture expresses (...) and reinforces the moral exclusion of those subjected to it, particularly African Americans. Importantly, this moral exclusion and the experience of torture may be created and reinforced through institutional practices independently of the intentions of individuals acting within those institutions. By prioritizing torture victims’ experiences and severing the link between torture and intention, my account forces a recognition that, far from being inconsistent with U.S. values, torture is deeply embedded within U.S. institutions. (shrink)

Imogen Dickie's book Fixing Reference promises to reframe the investigation of mental intentionality, or what makes thoughts be about particular things. Dickie focuses on beliefs, and argues that if we can show how our ordinary means of belief formation sustain a certain connection between what our beliefs are about and how they are justified, we will have explained the ability of these ordinary means of belief formation to generate beliefs that are about particular objects. A worry about Dickie's approach is (...) that the explanation it offers is circular and thus not a genuine explanation of mental aboutness. This article develops a version of that worry in detail and turns it aside. Nonetheless, I argue that the explanatory value of the account remains unclear. While it does promise a dialectical advance over traditional theorizing about aboutness, it does not reveal how our ordinary means of belief formation make beliefs be about what they are about. (shrink)

This paper explores the various ways Aristotle refers to and employs “heat and cold” in his embryology. In my view, scholars are too quick to assume that references to heat and cold are references to matter or an animal’s material nature. More commonly, I argue, Aristotle refers to heat and cold as the “tools” of soul. As I understand it, Aristotle is thinking of heat and cold in many contexts as auxiliary causes by which soul activities (primarily “concoction”) are carried (...) out. This, as I argue, is what it means to call them “tools” of soul. An upshot of this investigation is the fuller picture of Aristotle’s conception of efficient causation it provides in general, and the better understanding of the efficient causal operation of an organism’s nature or soul it provides in particular. (shrink)

We introduce the concept of assertion, survey existing views about it, and detail the contents of the remainder of the book.

Imaginative resistance refers to a perceived inability or unwillingness to enter into fictional worlds that portray deviant moralities (Gendler, 2000): we can all easily imagine that dragons exist, but many people feel incapable of imagining fictional worlds in which morality works differently. Although this phenomenon has received much attention from philosophers, no one has attempted to operationalize the construct in a self-report scale. In Study 1, we developed the Imaginative Resistance Scale (IRS), investigated its relationship to theoretically related constructs, and (...) confirmed its structure and reliability (rα = 0.92) in a large sample. In Study 2, we asked participants to rate scenarios expected to provoke imaginative resistance and predicted these ratings from the IRS and its validity measures. IRS scores accounted for variability in ease of imagining these scenarios over and above gender, political orientation, and three related measures. The results are discussed in terms of theories of imaginative resistance and directions for future research. (shrink)

In the Critique of Judgment, Kant claims that genius is a talent for art, but not for science. Despite his restriction of genius to the domain of fine art, several recent interpreters have suggested that genius has a role to play in Kant’s account of cognition in general and scientific practice in particular. In this paper, I explore Kant’s reasons for excluding genius from science as well as the reasons that one might nevertheless be tempted to think that his account (...) allows room for the scientific genius. I then argue that Kant’s concerns are not only epistemic, but also moral, and together, they give us good reason for resisting the veneration of genius. (shrink)

This chapter presents an overview of the contributions to the section on Experimental Mathematics by focusing in particular on how they characterize the phenomenon of “experimental mathematics” and its origins. The second part presents two case studies illustrating how experimental mathematics is understood in contemporary analysis. The third section offers a systematic presentation of the contributions to the section.

Fallibilists claim that one can know a proposition on the basis of evidence that supports it even if the evidence doesn't guarantee its truth. Jessica Brown offers a compelling defence of this view against infallibilists, who claim that it is contradictory to claim to know and yet to admit the possibility of error.

Increased technological and pharmacological interventions in patient care when patient outcomes are uncertain have been linked to the escalation in moral and ethical dilemmas experienced by health care providers in acute care settings. Health care research has shown that facilities that are able to attract and retain nursing staff in a competitive environment and provide high quality care have the capacity for nurses to process and resolve moral and ethical dilemmas. This article reports on the findings of a systematic review (...) of the empirical literature (1980 — February 2007) on the effects of unresolved moral distress and poor ethical climate on nurse turnover. Articles were sought to answer the review question: Does unresolved moral distress and a poor organizational ethical climate increase nurse turnover? Nine articles met the criteria of the review process. Although the prevailing sentiment was that poor ethical climate and moral distress caused staff turnover, definitive answers to the review question remain elusive because there are limited data that confidently support this statement. (shrink)

The Sleeping Beauty problem has spawned a debate between “Thirders” and “Halfers” who draw conflicting conclusions about Sleeping Beauty’s credence that a coin lands Heads. Our analysis is based on a probability model for what Sleeping Beauty knows at each time during the Experiment. We show that conflicting conclusions result from different modeling assumptions that each group makes. Our analysis uses a standard “Bayesian” account of rational belief with conditioning. No special handling is used for self-locating beliefs or centered propositions. (...) We also explore what fair prices Sleeping Beauty computes for gambles that she might be offered during the Experiment. (shrink)

The practical criteria by which developmental biologists choose their model systems have evolutionary correlates. The result is a sample that is not merely small, but biased in particular ways, for example towards species with rapid, highly canalized development. These biases influence both data collection and interpretation, and our views of how development works and which aspects of it are important.