The retina pigment epithelium (RPE) is a highly specialised epithelium that serves as a multifunctional and indispensable component of the vertebrate eye. Although a great deal of attention has been paid to its transdifferentiation capabilities and its ancillary functions in neural retina development, little is known about the molecular mechanisms that specify the RPE itself. Recent advances in our understanding of the genetic network that controls the progressive specification of the eye anlage in vertebrates have provided some of the initial (...) cues to the mechanisms responsible for RPE patterning. Here, we have outlined many recent findings that suggest that a limited number of transcription factors, including Otx2, Mitf and Pax6 and a few signalling cascades, are the elements required for the onset of RPE specification in vertebrates. Furthermore, using this information and the data available on the specification of the pigmented cells of primitive chordates, we have ventured some hypotheses on the origin of RPE cells during evolution. BioEssays 26:766–777, 2004. © 2004 Wiley Periodicals, Inc. (shrink)

While moral perfectionists rank conscious beings according to their cognitive abilities, Paola Cavalieri launches a more inclusive defense of all forms of subjectivity. In concert with Peter Singer, J. M. Coetzee, Harlan B. Miller, and other leading animal studies scholars, she expands our understanding of the nonhuman in such a way that the derogatory category of "the animal" becomes meaningless. In so doing, she presents a nonhierachical approach to ethics that better respects the value of the conscious self. Cavalieri (...) opens with a dialogue between two imagined philosophers, laying out her challenge to moral perfectionism and tracing its influence on our attitudes toward the "unworthy." She then follows with a roundtable "multilogue" which takes on the role of reason in ethics and the boundaries of moral status. Coetzee, Nobel Prize winner for Literature and author of _The Lives of Animals_, emphasizes the animality of human beings; Miller, a prominent analytic philosopher at Virginia Polytechnic Institute, dismantles the rationalizations of human bias; Cary Wolfe, professor of English at Rice University, advocates an active exposure to other worlds and beings; and Matthew Calarco, author of _Zoographies: The Question of the Animal from Heidegger to Derrida_, extends ethical consideration to entities that traditionally have little or no moral status, such as plants and ecosystems. As Peter Singer writes in his foreword, the implications of this conversation extend far beyond the issue of the moral status of animals. They "get to the heart of some important differences about how we should do philosophy, and how philosophy can relate to our everyday life." From the divergences between analytical and continental approaches to the relevance of posthumanist thinking in contemporary ethics, the psychology of speciesism, and the practical consequences of an antiperfectionist stance, _The Death of the Animal_ confronts issues that will concern anyone interested in a serious study of morality. (shrink)

How much do animals matter--morally? Can we keep considering them as second class beings, to be used merely for our benefit? Or, should we offer them some form of moral egalitarianism? Inserting itself into the passionate debate over animal rights, this fascinating, provocative work by renowned scholar Paola Cavalieri advances a radical proposal: that we extend basic human rights to the nonhuman animals we currently treat as "things." Cavalieri first goes back in time, tracing the roots of the debate (...) from the 1970s, then explores not only the ethical but also the scientific viewpoints, examining the debate's precedents in mainstream Western philosophy. She considers the main proposals of reform that recently have been advanced within the framework of today's prevailing ethical perspectives. Are these proposals satisfying? Cavalieri says no, claiming that it is necessary to go beyond the traditional opposition between utilitarianism and Kantianism and focus on the question of fundamental moral protection. In the case of human beings, such protection is granted within the widely shared moral doctrine of universal human rights' theory. Cavalieri argues that if we examine closely this theory, we will discover that its very logic extends to nonhuman animals as beings who are owed basic moral and legal rights and that, as a result, human rights are not human after all. (shrink)

My aim in this note is to shed light on ways of interpreting Kant’s Formula of Universal Law (FUL), by looking at relevant similarities and differences between Pauline Kleingeld and Mark Timmons. I identify both their readings as a formal interpretation of Kant’s FUL, in contrast to the substantive interpretations that favor a robust conception of rational agency as a necessary requirement for moral deliberation. I highlight the benefits that arise from Kleingled’s interpretation in showing the immediacy involved in the (...) volitional self-contradiction when universalizing a maxim. Alongside Timmons, I address a question as to whether Kleingeld’s interpretation is completely free from at least a minimal set of assumptions about practical deliberation more broadly, that seem to play a role in generating the volitational self-contradiction she is defending. I close by raising some skeptical worries about the capacity of this kind of contradiction to translate into a moral judgment triggering action. (shrink)

In this paper, we propose meaningfulness as one important evaluative criterion in individual climate ethics and suggest that most of our greenhouse gas emitting actions, behaviours, and lives are the opposite of meaningful: anti-meaningful. We explain why such actions etc. score negatively on three important dimensions of the meaningfulness scale, which we call the agential, narrative, and generative dimensions. We suggest that thinking about individual climate ethics also in terms of (anti-) meaningfulness illuminates important aspects of our troubled ethical involvement (...) with CC and can make a fresh and fruitful contribution to existing discussions, which tend to focus on moral responsibility and obligations. (shrink)

Vast and pervasive environmental problems such as climate change and biodiversity loss call every individual to active stewardship. Their magnitude and causal and strategic structures, however, pose powerful challenges to our moral psychology. Stewardship may feel overburdening, and appear hopeless. This may lead to widespread moral and political disengagement. This article proposes a resolve to garden practices as a way out of that danger, and describes the ways in which it will motivate individuals to so act as to coordinate on (...) behavioural patterns that will significantly alleviate grave, but seemingly distant and intractable environmental quandaries. (shrink)

Dans la formulation de la question du concours de l’Académie de Berlin de 1763, le texte français utilise le mot « évidence » là où le texte allemand mentionne des deutliche Beweisen. Que manifeste cette différence ? Quelles en sont les conséquences ? Les termes « évidence », Deutlichkeit, « certitude » apparaissent de manières très différentes dans les réponses. La multiplication terminologique et conceptuelle correspond à une profonde ambiguïté épistémologique. Au sein des réponses rédigées en allemand, la notion de (...) Deutlichkeit n’est pas centrale, tandis que l’est celle de Gewißheit. Les réponses rédigées en français font, quant à elles, toutes référence à l’« évidence », mais ce terme apparaît peu défini et trop ample. Ainsi, c’est l’esprit plutôt que la lettre de la question qui a été en jeu. La plupart des réponses se rejoignent cependant sur une analyse de la « nécessité de croire » à l’œuvre à la fois dans l’évidence, la certitude et la Deutlichkeit et sur la force coercitive de la démonstration. (shrink)

Dans la formulation de la question du concours de l’Académie de Berlin de 1763, le texte français utilise le mot « évidence » là où le texte allemand mentionne des deutliche Beweisen. Que manifeste cette différence? Quelles en sont les conséquences? Les termes « évidence », Deutlichkeit, « certitude » apparaissent de manières très différentes dans les réponses. La multiplication terminologique et conceptuelle correspond à une profonde ambiguïté épistémologique. Au sein des réponses rédigées en allemand, la notion de Deutlichkeit n’est (...) pas centrale, tandis que l’est celle de Gewißheit. Les réponses rédigées en français font, quant à elles, toutes référence à l’« évidence », mais ce terme apparaît peu défini et trop ample. Ainsi, c’est l’esprit plutôt que la lettre de la question qui a été en jeu. La plupart des réponses se rejoignent cependant sur une analyse de la « nécessité de croire » à l’œuvre à la fois dans l’évidence, la certitude et la Deutlichkeit et sur la force coercitive de la démonstration. (shrink)

‘Social Purity’ appears in a part of the French and Anglo-Saxon nineteenth-twentieth century’s feminisms, as a mean for many claims: from the full recognition of sexual difference in Hubertine Auclert’s social and ‘differentialist’ republicanism in France to Josephine Butler’s refusal of any purity imposed from above in England, until the absolute turn of the idea of women’s moral superiority and the equal and opposite force to the final exit from ‘the social’ by the American ‘New Womanism’, individualizing and de-feminizing the (...) act of sexual liberation. All this in a continuous play of actions and reactions, sometimes paradoxical, weaving together suffragism and anti-suffragism, contestation of the conjugal complementarity and the never overcome temptations of hetero or self-control. (shrink)

Large parts of our world are filled with plants, and human life depends on, interacts with, affects and is affected by plant life in various ways. Yet plants have not received nearly as much attention from philosophers and ethicists as they deserve. In environmental philosophy, plants are often swiftly subsumed under the categories of "all living things" and rarely considered thematically. There is a need for developing a more sophisticated theoretical understanding of plants and their practical role in human experience. (...) Plant Ethics: Concepts and Applications aims at opening a philosophical discussion that may begin to fill that gap. The book investigates issues in plants ontology, ethics and the role of plants and their cultivation in various fields of application. It explores and develops important concepts to shape and frame plants-related philosophical questions accurately, including new ideas of how to address moral questions when confronted with plants in concrete scenarios. This edited volume brings together for the first time, and in an interdisciplinary spirit, contemporary approaches to plant ethics by international scholars of established reputation. It will be of great interest to students and scholars of Philosophy and Ethics. (shrink)

​This book proposes and defends the practice of urban gardening as an ecologically and socially beneficial, culturally innovative, morally appropriate, ethically uplifting, and politically incisive way for individuals and variously networked collectives to contribute to a successful management of some defining challenges of the Anthropocene – this new epoch in which no earthly place, form, entity, process, or system escapes the reach of human activity – including urban resilience and climate change.

Liberalism is often under attack because of its alleged excessive "formalism". In the words of one of its main contemporary defenders, "the defining feature of liberalism is that it ascribes certain fundamental freedoms to each individual. In particular, it grants people a very wide freedom of choice in terms of how they lead their lives".1 In more continental language, this core idea has been summarized in the statement that what liberalism is all about is "the handling and organization of the (...) conditions in which freedom can be realized".2 For liberals, individuals must be recognized as the ultimate arbiters of what gives value to their own existences, and the liberal principle of legitimacy is not satified whenever the state seeks to impose any particular comprehensive doctrine about the good life.From many sides, however, it is said that an acceptable society in which to live needs a more substantial conception of the good, without which individuals are uprooted and anonymous.3 Somewhat along the lines of the traditional criticism of the Kantian doctrine, turning upon its focus on procedure and universalism to the detriment of content and particularism, contemporary liberalism is sometimes seen as an empty morality that, abstracting as it does from experience, is not able to provide the ethical resources necessary to ground acceptable pragmatic policies.4 I want to argue instead that, at least from one point of view, liberalism in all its versions is not formal enough. There is, I will claim, a specific problem with respect to which an important substantive aspect is surreptitiously introduced into the theory: the problem of moral status. As my argument unfolds, I shall deal with three different senses of "formal": formal as procedural, formal as neutral, and formal as analytic. (shrink)

The turn of the last century was a key transitional period for the development of symbolic logic and scientific philosophy. The Peano school, the editorial board of the Revue de Métaphysique et de Morale, and the members of the Vienna Circle are generally mentioned as champions of this transformation of the role of logic in mathematics and in the sciences. The articles contained in this volume aim to contribute to a richer historical and philosophical understanding of these groups and research (...) areas in Italy, France and Austria. Specifically, the contributions focus on the following topics: a detailed investigation of the relation between structuralism and modern mathematics; different notions of definition and interpretation at the turn of last century; a closer understanding of the relation between the Vienna Circle, the Peano School and French philosophy in the first half of the twentieth century. (shrink)

Gratitude is both expected and problematic in live organ donation. Are there grounds to require it, and to forbid access to live donor transplantation to a recipient who fails to signal that he feels any form of gratitude? Recipient gratitude is not currently required for organ donation, but it is expected and may be a moral requirement. Despite this, we argue that making it a condition for live organ transplantation would be unjustified. It would constitute a problematic and disproportionate punishment (...) for perceived immoral behaviour on the part of the recipient. It would also bar the donor from positive aspects of organ donation that remain even in the absence of recipient gratitude. A potential recipient's lack of gratitude should be explored as a possible symptom of other morally problematic issues and integrated into the information provided to the potential donor. Recognition of the donor's gift and gratitude for it may also need to be expressed in part by others. This last aspect is relevant even in cases where the recipient feels and expresses gratitude. (shrink)

This article discusses the encounter between virtue ethics and environmental ethics and the ways in which environmental virtue ethics confronts nonhuman axiology and the controversial theme of moral anthropocentrism. It provides a reasoned review of the relevant literature and a historical–conceptual rendition of how environmental and virtue ethics came to converge as well as the ways in which they diverge. It explains that contrary to important worries voiced by some non-anthropocentric environmental ethicists, environmental virtue ethics enables and requires a rich (...) and nuanced engagement with nonhuman values of all sorts—intrinsic as well as extrinsic, moral as well as nonmoral, anthropocentric as well as non-anthropocentric—and neither presupposes nor implies moral anthropocentrism in its normativity. Finally, the article considers the fortunes of, and some challenges for, environmental virtue ethics in its application to the ethics of climate change, an increasingly central topic in environmental ethics. This article proceeds as follows: the first section introduces virtue ethics; the second section looks at axiological and normative themes in environmental ethics; the third section discusses environmental virtue ethics; and the fourth section considers its application to climate change. The fifth section draws some conclusions. (shrink)

This book provides a collection of chapters on the development of scientific philosophy and symbolic logic in the early twentieth century. The turn of the last century was a key transitional period for the development of symbolic logic and scientific philosophy. The Peano school, the editorial board of the Revue de Métaphysique et de Morale, and the members of the Vienna Circle are generally mentioned as champions of this transformation of the role of logic in mathematics and in the sciences. (...) The scholarship contained provides a rich historical and philosophical understanding of these groups and research areas. Specifically, the contributions focus on a detailed investigation of the relation between structuralism and modern mathematics. In addition, this book provides a closer understanding of the relation between symbolic logic and previous traditions such as syllogistics. This volume also informs the reader on the relation between logic, the history and didactics in the Peano School. This edition appeals to students and researchers working in the history of philosophy and of logic, philosophy of science, as well as to researchers on the Vienna Circle and the Peano School. (shrink)

This paper aims to investigate the nature of trust in others. First, we argue that the feeling of trust is an important phenomenon of human existence, but it is not the true root of trust in others. Trust is above all an intentional response of the person, one that must be motivated and adequate to its object. When we trust, we entrust a good that is important to another person so that he or she can take care of it. For (...) trust to be authentic, the other must be trustworthy. The feeling of trust, then, arises as a spontaneous response when we are aware that our trust is properly placed. When we have understood that trust is a response, it is possible to examine the ethical relevance of trust in others: trust fulfils morally relevant values, is the source of moral duties, introduces the person in the logic of self-giving and is nourished by a variety of moral virtues. (shrink)

In The City of Ladies and Bell in Campo, Christine de Pizan and Margaret Cavendish imagine women’s participation to war as a metaphor of the sexual conflict that they must fight in order to conquer their visibility in history. While Pizan rewrites history from women’s stand point and acknowledges the universal value of sexual difference for the plan of salvation, Cavendish moves within a modern frame and thinks history as the result of human action. In both cases, the tale of (...) women’s participation to war allows criticizing the moral and normative implications of «nature». (shrink)

The paper focuses on the role of Kant’s refutation of materialism in his understanding of the Enlightenment, meant to be the necessary condition that allows human beings to express their proper dignity, i.e. to cultivate the urge for and the vocation of free thought. Sketching the main moments of the German struggle against the threat of materialism, the paper places Kant’s refutation within this tradition, and reconstructs the steps of his critique from the very beginning of his reflection – still (...) dealing with the main topics of Wolff’s metaphysic – up to the definitive refutation he develops on the basis of the transcendental idealism of the first Critique. The shift from the «obscure reasons» pointed out in the Dreams, that allow a refutation of materialism on moral grounds, to the statement of the meaninglessness of the question in a transcendental perspective reveals that the attempt to find a solution to the problem of materialism – most of all in its psychological meaning –represents a neverending challenge within Kant’s reflection. (shrink)

The paper focuses on the reception of Priestley in Germany, which is remarkable for the huge and assiduous interest it raised in different philosophical milieus. Priestley’s dynamical conception of matter, his explanation of the functioning of the brain, and of the production of material ideas are at the basis of the new form of materialism that develops in Germany in the late 1770s, and which differs completely from the model of mechanical materialism Germany was used to in earlier decades. Indeed, (...) the German reception of Priestley’s ideas begins surprisingly early, just one year after the publication of his edition of Hartley’s Observations on Man (1775), and traverses the two final decades of the eighteenth century with a considerable number of reviews and references in the main philosophical journals and works of the time. In 1778, his introduction to the Observations was translated into German and presented in the form of a manifesto of a new materialistic philosophy compatible with the claims of morals and religion. Within a few years, Priestley became the unavoidable reference point for the most relevant theological and philosophical discussions concerning the nature of matter and spirits, the place of God, the possibility of human freedom, and the legitimacy of free thinking. (shrink)

The paper focuses on the role of Kant’s refutation of materialism in his understanding of the Enlightenment, meant to be the necessary condition that allows human beings to express their proper dignity, i.e. to cultivate the urge for and the vocation of free thought. Sketching the main moments of the German struggle against the threat of materialism, the paper places Kant’s refutation within this tradition, and reconstructs the steps of his critique from the very beginning of his reflection – still (...) dealing with the main topics of Wolff’s metaphysic – up to the definitive refutation he develops on the basis of the transcendental idealism of the first Critique. The shift from the «obscure reasons» pointed out in the Dreams, that allow a refutation of materialism on moral grounds, to the statement of the meaninglessness of the question in a transcendental perspective reveals that the attempt to find a solution to the problem of materialism – most of all in its psychological meaning –represents a neverending challenge within Kant’s reflection. (shrink)

The paper focuses on the role of Kant’s refutation of materialism in his understanding of the Enlightenment, meant to be the necessary condition that allows human beings to express their proper dignity, i.e. to cultivate the urge for and the vocation of free thought. Sketching the main moments of the German struggle against the threat of materialism, the paper places Kant’s refutation within this tradition, and reconstructs the steps of his critique from the very beginning of his reflection – still (...) dealing with the main topics of Wolff’s metaphysic – up to the definitive refutation he develops on the basis of the transcendental idealism of the first Critique. The shift from the «obscure reasons» pointed out in the Dreams, that allow a refutation of materialism on moral grounds, to the statement of the meaninglessness of the question in a transcendental perspective reveals that the attempt to find a solution to the problem of materialism – most of all in its psychological meaning –represents a neverending challenge within Kant’s reflection. (shrink)

Climate change is a key challenge in the contemporary world. This volume studies climate change through many lenses: politics, law, ethics, philosophy, religion, and contemporary art and culture. The essays explore alternatives for sustainable development and highlight oft-overlooked issues, such as climate change refugees and food justice. Designed as four parts, the volume: first, offers an astute diagnosis of the political and moral intricacies of climate change; second, deals specifically with topics in the political theory of climate change governance; third, (...) focuses on the moral theory of climate change; and, finally, analyzes the specific ramifications of the climate change problem. With contributions from experts across the world, this will be especially useful to scholars and students of climate change studies, development studies, environmental studies, politics, and ethics and philosophy. It will also interest policy-makers, social activists, governmental and non-governmental agencies, and those in media and journalism. (shrink)

Is the corrupt behaviour of public officials a politically relevant kind of wrong only when it causes the malfunctioning of institutions? We challenge recent institutionalist approaches to political corruption by showing a sense in which the individual corrupt behaviour of certain public officials is wrong not only as a breach of personal morality but in inherently politically salient terms. To show this sense, we focus on a specific instance of individual corrupt behaviour on the part of public officials entrusted with (...) the power to implement public rules in a liberal democracy. Although not necessarily unlawful, their behaviour is politically wrong qua corrupt when it contradicts surreptitiously the requirement of public justification that undergirds the public order. Then, we distinguish this form of corruption as surreptitious action from such unlawful but publicly justifiable kinds of political misbehaviour as civil disobedience. (shrink)

In this response essay, Ceva and Ferretti reply to their critics and clarify some key aspects of their book. Specifically, the discussion starts by elaborating on the notion of an ethics of office accountability, explaining that the specification of institutional norms of officeholders behaviour is the result of practices of officeholders' interaction (including democratic practices) and reflection. The second theme is the responsibility for political corruption. The authors emphasise the importance of focussing not only on retrospective responsibility, for the sake (...) of punishing corrupt behaviour, but especially on accountability as a form of self-reflection by the officeholders on the weaknesses of their institutional work together. This exercise is preliminary to their assuming forward-looking responsibilities for anti-corruption. The third and final part discusses political corruption as a specifically interactive wrong. For the authors, the magnitude and moral salience of the wrong of corruption, as well as the different wrongs implicated both from an interactive perspective and in consideration of the harm caused to third parties, must be assessed in light of the context and the moral standing of the public institution in question. In this sense, political corruption is a pro tanto wrong. (shrink)

In attempting to clarify both the concept of toleration and its role in contemporary society several authors have interpreted it as based on the notion of respect for persons. Persons are due respect as moral agents and as such should be allowed to make their own choices, even if the content of those choices meets with our disapproval. According to a classical understanding of toleration, one can be said to tolerate something if one disapproves of it (this is commonly called (...) the ‘objection component’ of toleration); has the power to interfere with it (the ‘power component’); and yet abstains from interfering in the light of certain overriding reasons (the ‘acceptance component’ or ‘non-interference component’). Respecting people as autonomous and as able to formulate and follow a plan of life, individually or collectively, might well be thought to give us a reason for showing tolerance by supplying a basis for its acceptance component. However, the idea that toleration is an outcome of respect, rather than a distinct and sometimes conflicting notion, is far from uncontroversial. Indeed, the ideal of respect has sometimes been seen as incompatible with the objection component of toleration, which presupposes a negative evaluation and therefore seems to imply the other’s inferiority.The relation between respect and toleration therefore stands in need of further philosophical analysis. The articles in this collection aim to advance that analysis by addressing some of the core philosophical problems affecting the relative normative roles of respect and toleration understood as contemporary liberal democratic ideals. (shrink)

One topic of growing interest in the debate on intergenerational justice is the duty to respect the freedom of future generations. One consideration in favor of such a duty is that the decisions of present generations will affect the range of decisions that will be available to future people. As a consequence, future generations’ freedom to direct their lives may be importantly restricted such that present generations can be seen as taking future people’s lives into their hands and disempowering them. (...) This article defends the idea that present generations have an obligation to sustain a certain threshold of freedom for members of present and future generations alike. It argues that we should regard sustainability policies as a way to redistribute freedom across members of different generations. It starts by explaining the centrality of social freedom to the way we conceive of moral persons, then explains how freedom can be understood as an object of redistribution. It then argues that by imposing some risks—such as that of resource depletion or destruction of the ecosystem—on future generations, present generations push future generations’ freedom below an acceptable threshold. The paper concludes with examples of how this focus on freedom can offer guidance in selecting and justifying sustainability policies—for example, measures for conserving biodiverse environments—even when it is not clear how they will directly contribute to the well-being of future persons. (shrink)

Scientific research is growingly increasingly reliant on "microwork" or "crowdsourcing" provided by digital platforms to collect new data. Digital platforms connect clients and workers, charging a fee for an algorithmically managed workflow based on Terms of Service agreements. Although these platforms offer a way to make a living or complement other sources of income, microworkers lack fundamental labor rights and basic safe working conditions, especially in the Global South. We ask how researchers and research institutions address the ethical issues involved (...) in considering microworkers as "human participants." We argue that current scientific research fails to treat microworkers in the same way as in-person human participants, producing de facto a double morality: one applied to people with rights acknowledged by states and international bodies (e.g., the Helsinki Declaration), the other to guest workers of digital autocracies who have almost no rights at all. We illustrate our argument by drawing on 57 interviews conducted with microworkers in Spanish-speaking countries. (shrink)

SummaryRecord linking provided information on the complete reproductive schedules of a sample of 1102 couples with at least two children born alive from a rural Spanish community characterised by very high extramarital reproduction. Birth spacing was analysed considering final family size as well as the legitimate–illegitimate status and sex of the newborn, and survival of the preceding sibling.

Cross-situational statistical learning of words involves tracking co-occurrences of auditory words and objects across time to infer word-referent mappings. Previous research has demonstrated that learners can infer referents across sets of very phonologically distinct words, but it remains unknown whether learners can encode fine phonological differences during cross-situational statistical learning. This study examined learners’ cross-situational statistical learning of minimal pairs that differed on one consonant segment, minimal pairs that differed on one vowel segment, and non-minimal pairs that differed on two (...) or three segments. Learners performed above chance for all pairs, but performed worse on vowel minimal pairs than on consonant minimal pairs or non-minimal pairs. These findings demonstrate that learners can encode fine phonetic detail while tracking word-referent co-occurrence probabilities, but they suggest that phonological encoding may be weaker for vowels than for consonants. (shrink)

This paper sheds light on the role of digital platform labour in the development of today’s artificial intelligence, predicated on data-intensive machine learning algorithms. Focus is on the specific ways in which outsourcing of data tasks to myriad ‘micro-workers’, recruited and managed through specialized platforms, powers virtual assistants, self-driving vehicles and connected objects. Using qualitative data from multiple sources, we show that micro-work performs a variety of functions, between three poles that we label, respectively, ‘artificial intelligence preparation’, ‘artificial intelligence verification’ (...) and ‘artificial intelligence impersonation’. Because of the wide scope of application of micro-work, it is a structural component of contemporary artificial intelligence production processes – not an ephemeral form of support that may vanish once the technology reaches maturity stage. Through the lens of micro-work, we prefigure the policy implications of a future in which data technologies do not replace human workforce but imply its marginalization and precariousness. (shrink)

R. M. Friedberg demonstrated the existence of a recursive functional that agrees with no Banach-Mazur functional on the class of recursive functions. In this paper Friedberg's result is generalized to both α-recursive functionals and weak α-recursive functionals for all admissible ordinals α such that $\lambda , where α * is the Σ 1 -projectum of α and λ is the Σ 2 -cofinality of α. The theorem is also established for the metarecursive case, α = ω 1 , where α (...) * = λ = ω. (shrink)

Dominical categories are categories in which the notions of partial morphisms and their domains become explicit, with the latter being endomorphisms rather than subobjects of their sources. These categories form the basis for a novel abstract formulation of recursion theory, to which the present paper is devoted. The abstractness has of course its usual concomitant advantage of generality: it is interesting to see that many of the fundamental results of recursion theory remain valid in contexts far removed from their classic (...) manifestations. A principal reason for introducing this new formulation is to achieve an algebraization of the generalized incompleteness theorem, by providing a category-theoretic development of the concepts and tools of elementary recursion theory that are inherent in demonstrating the theorem.Dominical recursion theory avoids the commitment to sets and partial functions which is characteristic of other formulations, and thus allows for an intrinsic recursion theory within such structures as polyadic algebras. It is worthy of notice that much of elementary recursion theory can be developedwithout referencetoelements.By Gödel's generalized incompleteness theorem for consistent arithmetical systemTwe mean any statement of the following sort: if every recursive set is definable inT, thenTis essentially undecidable [41]; or if all recursive functions are definable inT, thenTis essentially undecidable [41]; or if every recursive set is definable inT, thenT0andR0 are recursively inseparable [39]; or if all re sets are representable inT, thenT0is creative [28], [39]; or ifTis a Rosser theory, thenT0andR0are effectively inseparable [39]. (shrink)