How do individuals guide their activities towards some goal? Harry Frankfurt once identified the task of explaining guidance as the central problem in action theory. An explanation has proved to be elusive, however. In this paper, I show how we can marshal empirical research to make explanatory progress. I contend that human agents have a primitive capacity to guide visual attention, and that this capacity is actually constituted by a sub-individual psychological control-system: the executive system. I thus illustrate how we (...) can explain exercises of individual-level guidance by appeal to its sub-individual constitution. This opens up a new avenue for explicating agency. (shrink)

Is an appropriate causal connection to the past experience it represents a necessary condition for a mental state to qualify as an episodic memory? For some years this issue has been the subject of an intense debate between the causalist theory of episodic memory (CTM) and the simulationist theory of episodic memory (STM). This paper aims at exploring the prospects for an embodied approach to episodic memory and assessing the potential case for causalism that could be founded on it. In (...) a critical section, it argues that the empirical data to which STM appeals are both incomplete and inconclusive, and on closer examination even provide support for a proceduralist version of CTM. In a constructive section, it elaborates on the notion of a necessary causal connection in terms of particular procedural patterns acquired at encoding and operative at retrieval, grounding this move on recent empirical data about eye movements in mnemonic mental imagery. (shrink)

What are the processes, from conception to adulthood, that enable a single cell to grow into a sentient adult? Neuroconstructivism is a pioneering 2 volume work that sets out a whole new framework for considering the complex topic of development, integrating data from cognitive studies, computational work, and neuroimaging.

ABSTRACT:In a series of reports the United Nations Special Representative on the issue of Human Rights and Transnational Corporations has emphasized a tripartite framework regarding business and human rights that includes the state “duty to protect,” the TNC “responsibility to respect,” and “appropriate remedies” for human rights violations. This article examines the recent history of UN initiatives regarding business and human rights and places the tripartite framework in historical context. Three approaches to human rights are distinguished: moral, political, and legal. (...) It is argued that the tripartite framework’s grounding of the responsibility of TNCs to respect human rights is properly understood as moral and not merely as a political or legal duty. A moral account of the duty of TNCs to respect basic human rights is defended and contrasted with a merely strategic approach. The main conclusion of the article is that only a moral account of the basic human rights duties of TNCs provides a sufficiently deep justification of “the corporate responsibility to respect human rights” feature of the tripartite framework. (shrink)

We distinguish dynamical and statistical interpretations of evolutionary theory. We argue that only the statistical interpretation preserves the presumed relation between natural selection and drift. On these grounds we claim that the dynamical conception of evolutionary theory as a theory of forces is mistaken. Selection and drift are not forces. Nor do selection and drift explanations appeal to the (sub-population-level) causes of population level change. Instead they explain by appeal to the statistical structure of populations. We briefly discuss the implications (...) of the statistical interpretation of selection for various debates within the philosophy of biologythe `explananda of selection' debate and the `units of selection' debate. (shrink)

We review recent developments in ethical pluralism, ethical particularism, Kantian intuitionism, rights theory, and climate change ethics, and show the relevance of these developments in ethical theory to contemporary business ethics. This paper explains why pluralists think that ethical decisions should be guided by multiple standards and why particularists emphasize the crucial role of context in determining sound moral judgments. We explain why Kantian intuitionism emphasizes the discerning power of intuitive reason and seek to integrate that with the comprehensiveness of (...) Kant’s moral framework. And we show how human rights can be grounded in human agency, and explain the connections between human rights and climate change. (shrink)

In recent years, there has been an increasing interest among philosophers of memory in the questions of how to characterize and to account for the temporal phenomenology of episodic memory. One prominent suggestion has been that episodic memory involves a feeling of pastness, the elaboration of which has given rise to two main approaches. On the intentionalist approach, the feeling of pastness is explained in terms of what episodic memory represents. In particular, Fernández has argued that it can be explained (...) in terms of memory representing itself as being caused by a past perceptual experience. On the metacognitive approach, which we have recently developed in, the feeling of pastness results from the monitoring and interpretation of the processing features of episodic remembering. In this paper, we show that the metacognitive approach should be preferred over the intentionalist approach. We argue that intentionalism, and Fernández’ causal self-referential view in particular, ultimately fail as accounts of the feeling of pastness. The difficulties faced by intentionalism allows us to single out three constraints that any satisfactory account of the temporal phenomenology of episodic remembering needs to meet. We conclude by arguing that the metacognitive view satisfies those constraints in a neat way, and as such, that it should be preferred over intentionalism. (shrink)

There are two competing interpretations of the modern synthesis theory of evolution: the dynamical (also know as ‘traditional’) and the statistical. The dynamical interpretation maintains that explanations offered under the auspices of the modern synthesis theory articulate the causes of evolution. It interprets selection and drift as causes of population change. The statistical interpretation holds that modern synthesis explanations merely cite the statistical structure of populations. This paper offers a defense of statisticalism. It argues that a change in trait frequencies (...) in a population can be attributed only to selection or drift against the background of a particular statistical description of the population. The traditionalist supposition that selection and drift are description‐independent causes of population change leads the dynamical interpretation into a dilemma: it must face a contradiction or accept the loss of explanatory power. (shrink)

This paper comprises a case study illustrating ethical and practical challenges for a Ugandan hospital-based social worker early in the COVID-19 pandemic, followed by a commentary. The hospital was under-resourced, with staff and patients experiencing lack of information and panic. The social worker, Denis Adia, recounts his responses to new and ethically challenging situations, including persuading Muslim patients to stop fasting for the good of their health; deciding to keep a baby in hospital with parents although this was against (...) the rules; and supporting a stigmatised former patient in the face of intimidation by colleagues. He reflects on the importance of recognising each person’s unique needs and circumstances, seeing this as a vital role for social workers. The case is followed by a commentary from a UK academic (Sarah Banks), who notes the cognitive and emotional effort (‘ethics work’) undertaken by the social worker to: see the ethical aspects of particular situations; take account of patients’ specific needs; ensure they are treated with respect; promote their well-being; and perform as a good social worker. Banks draws attention to the key role of the virtue of courage in pandemic conditions, which involves working with new risks and facing fears with confidence. (shrink)

In paradigm exercises of agency, individuals guide their activities toward some goal. A central challenge for action theory is to explain how individuals guide. This challenge is an instance of the more general problem of how to accommodate individuals and their actions in the natural world, as explained by natural science. Two dominant traditions–primitivism and the causal theory–fail to address the challenge in a satisfying way. Causal theorists appeal to causation by an intention, through a feedback mechanism, in explaining guidance. (...) Primitivists postulate primitive agential capacities in their explanations. The latter neglect to explain how primitive capacities integrate with findings from natural science. The former do not explain why some feedback mechanism’s activity amounts to the agent’s guidance. In this paper I argue that both traditions should acknowledge a capacity to guide, as actually constituted by the executive system. I argue that appeals to this empirically discovered psychological system explain how individuals guide in a way that integrates with explanations from cognitive science. Individuals’ capacity to guide is embedded in the natural world through the activity of its constituent (mechanistic) components. (shrink)

The extensive range and depth of the twenty commentaries on my target article confirms that something has gone deeply wrong in biology. A wide range of biologists has more than met my invitation for “others to pitch in and develop or counter my arguments.” The commentaries greatly develop those arguments. Also remarkably, none raise issues I would seriously disagree with. I will focus first on the more critical comments, summarise the other comments, and then point the way forward on what (...) I view as a necessary and long-overdue transition in the foundations of biology. (shrink)

There has recently been much interest in the role of attention in controlling action. The role has been mischaracterized as an element in necessary and sufficient conditions on agential control. In this paper I attempt a new characterization of the role. I argue that we need to understand attentional control in order to fully understand agential control. To fully understand agential control we must understand paradigm exercises of agential control. Three important accounts of agential control—intentional, reflective, and goal-represented control—do not (...) fully explain such exercises. I argue that understanding them requires understanding how deployments of visual attention implement flexible occurrent control, or a capacity to flexibly adjust the degree of control that individuals exercise over their actions. While such deployments of attention are neither necessary nor sufficient for exercising agential control, they constitute an attentional skill for controlling action, understanding which is central to fully understanding agential control. We can appreciate its centrality if we appreciate that this attentional skill for controlling action is plausibly crucial to acting non-negligently. (shrink)

Libertarian theories of the normative core of the corporation hold in common the view that is the responsibility of publicity held corporations to return profits to shareholders within the bounds of certain moral side-constraints. Side-constraints may be either weak (grounded in the rules of the game) or strong (grounded in rights). This essay considers libertarian arguments regarding the normative core of the corporation in the context of global capitalism and in the light of actual corporate behavior. First, it is argued (...) the weak side-constraints view is conceptually incoherent when applied in a global context. Second, it is argued that proponents of the libertarian strong side-constraints view lack an adequate theory of rights. Third, both the weak side-constraints view and the strong side-constraints view are shown to be unsatisfactory insofar as they fail to adequately address the coercive power of corporations. The main conclusion of this essay is that a viable libertarian theory of the corporation has yet to be articulated. (shrink)

There are two general approaches to characterising biological functions. One originates with Cummins. According to this approach, the function of a part of a system is just its causal contribution to some specified activity of the system. Call this the ‘C-function’ concept. The other approach ties the function of a trait to some aspect of its evolutionary significance. Call this the ‘E-function’ concept. According to the latter view, a trait's function is determined by the forces of natural selection. The C-function (...) and E-function concepts are clearly quite different, but there is an important relation between them which heretofore has gone unnoticed. The purpose of this paper is to outline that relation.This is not the first paper to discuss the relation of C-function and E-function. Previous attempts all follow either one of two strategies. The first proposes that the two concepts are ‘unified.’ The other proposes that they are radically distinct and apply to wholly different fields within biology. (shrink)

What is a logical constant? The question is addressed in the tradition of Tarski's definition of logical operations as operations which are invariant under permutation. The paper introduces a general setting in which invariance criteria for logical operations can be compared and argues for invariance under potential isomorphism as the most natural characterization of logical operations.

Whenever a structure with a particularly interesting computability-theoretic property is found, it is natural to ask whether similar examples can be found within well-known classes of algebraic structures, such as groups, rings, lattices, and so forth. One way to give positive answers to this question is to adapt the original proof to the new setting. However, this can be an unnecessary duplication of effort, and lacks generality. Another method is to code the original structure into a structure in the given (...) class in a way that is effective enough to preserve the property in which we are interested. In this paper, we show how to transfer a number of computability-theoretic properties from directed graphs to structures in the following classes: symmetric, irreflexive graphs; partial orderings; lattices; rings ; integral domains of arbitrary characteristic; commutative semigroups; and 2-step nilpotent groups. This allows us to show that several theorems about degree spectra of relations on computable structures, nonpreservation of computable categoricity, and degree spectra of structures remain true when we restrict our attention to structures in any of the classes on this list. The codings we present are general enough to be viewed as establishing that the theories mentioned above are computably complete in the sense that, for a wide range of computability-theoretic nonstructure type properties, if there are any examples of structures with such properties then there are such examples that are models of each of these theories. (shrink)

In this study, I will first introduce Husserl’s analysis in Studien zur Struktur des Bewußtseins by emphasizing the reasons that motivate these analyses on descriptive psychology and their status in Husserl’s transcendental phenomenology in the late Freiburg period. I will then focus on the structure of acts, with particular emphasis on three aspects stressed by Husserl in Studien: intentionality, the taxonomy of acts, and Brentano’s principle of the Vorstellungsgrundlage. The last three parts of this study outline the characteristic features of (...) three fundamental aspects of affective life in Husserl’s phenomenology: emotions, sense feelings, and moods. I will conclude with some general remarks on the status of affects and values in Husserl’s phenomenology. (shrink)

Several notions of computability-theoretic reducibility between [Formula: see text] principles have been studied. This paper contributes to the program of analyzing the behavior of versions of Ramsey’s Theorem and related principles under these notions. Among other results, we show that for each [Formula: see text], there is an instance of RT[Formula: see text] all of whose solutions have PA degree over [Formula: see text] and use this to show that König’s Lemma lies strictly between RT[Formula: see text] and RT[Formula: see (...) text] under one of these notions. We also answer two questions raised by Dorais, Dzhafarov, Hirst, Mileti, and Shafer on comparing versions of Ramsey’s Theorem and of the Thin Set Theorem with the same exponent but different numbers of colors. Still on the topic of the effect of the number of colors on the computable aspects of Ramsey-theoretic properties, we show that for each [Formula: see text], there is an [Formula: see text]-coloring [Formula: see text] of [Formula: see text] such that every [Formula: see text]-coloring of [Formula: see text] has an infinite homogeneous set that does not compute any infinite homogeneous set for [Formula: see text], and connect this result with the notion of infinite information reducibility introduced by Dzhafarov and Igusa. Next, we introduce and study a new notion that provides a uniform version of the idea of implication with respect to [Formula: see text]-models of RCA0, and related notions that allow us to count how many applications of a principle [Formula: see text] are needed to reduce another principle to [Formula: see text]. Finally, we fill in a gap in the proof of Theorem 12.2 in Cholak, Jockusch, and Slaman. (shrink)

This study is about Brentano’s criticism of a version of phenomenalism that he calls “mental monism” and which he attributes to positivist philosophers such as Ernst Mach and John Stuart Mill. I am interested in Brentano’s criticism of Mill’s version of mental monism based on the idea of “permanent possibilities of sensation.” Brentano claims that this form of monism is characterized by the identification of the class of physical phenomena with that of mental phenomena, and it commits itself to a (...) form of idealism. Brentano argues instead for a form of indirect or hypothetical realism based on intentional correlations. (shrink)

Skilled action typically requires that individuals guide their activities toward some goal. In skilled action, individuals do so excellently. We do not understand well what this capacity to guide consists in. In this paper I provide a case study of how individuals shift visual attention. Their capacity to guide visual attention toward some goal (partly) consists in an empirically discovered sub-system – the executive system. I argue that we can explain how individuals guide by appealing to the operation of this (...) sub-system. Understanding skill and skilled action thus requires appreciating the role of the executive system. (shrink)

What is attention? On one influential position, attention constitutively is the selection of some stimulus for coupling with a response. Wayne Wu has proposed a master argument for this position that relies on the claim that cognitive science commits to an empirical sufficient condition (ESC), according to which, if a subject S perceptually selects (or response-couples) X to guide performance of some experimental task T, she therein attends to X. In this paper I show that this claim about cognitive science (...) is false. Cognitive science allows for inattentive selection-for-task, or inattentive response-coupling. This means that Wu’s account is without independent support. (shrink)

The standard semantic definition of consequence with respect to a selected set X of symbols, in terms of truth preservation under replacement (Bolzano) or reinterpretation (Tarski) of symbols outside X, yields a function mapping X to a consequence relation ⇒x. We investigate a function going in the other direction, thus extracting the constants of a given consequence relation, and we show that this function (a) retrieves the usual logical constants from the usual logical consequence relations, and (b) is an inverse (...) to—more precisely, forms a Galois connection with—the Bolzano-Tarski function. (shrink)

How can we argue, from neural facts, that representational states exhibit some specific representational structure? This paper approaches the question through a case study on the priority map-mechanism that underlies our capacity to orient visual attention. Computational models from cognitive neuroscience describe this mechanism as operating over neural topographic structures. These neural structures exhibit the functional profile of topographic representational structure. I argue that this fact warrants attributing topographic structure to the priority map mechanism’s representational states.

Over the course of human history, the sciences, and biology in particular, have often been manipulated to cause immense human suffering. For example, biology has been used to justify eugenic programs, forced sterilization, human experimentation, and death camps—all in an attempt to support notions of racial superiority. By investigating the past, the contributors to _Biology and Ideology from Descartes to Dawkins_ hope to better prepare us to discern ideological abuse of science when it occurs in the future. Denis R. (...) Alexander and Ronald L. Numbers bring together fourteen experts to examine the varied ways science has been used and abused for nonscientific purposes from the fifteenth century to the present day. Featuring an essay on eugenics from Edward J. Larson and an examination of the progress of evolution by Michael J. Ruse, _Biology and Ideology_ examines uses both benign and sinister, ultimately reminding us that ideological extrapolation continues today. An accessible survey, this collection will enlighten historians of science, their students, practicing scientists, and anyone interested in the relationship between science and culture. (shrink)

Le déficit d’explicabilité des techniques d’apprentissage machine (AM) pose des problèmes opérationnels, juridiques et éthiques. Un des principaux objectifs de notre projet est de fournir des explications éthiques des sorties générées par une application fondée sur de l’AM, considérée comme une boîte noire. La première étape de ce projet, présentée dans cet article, consiste à montrer que la validation de ces boîtes noires diffère épistémologiquement de celle mise en place dans le cadre d’une modélisation mathéma- tique et causale d’un phénomène (...) physique. La différence majeure est qu’une méthode d’AM ne prétend pas représenter une causalité entre les paramètres d’entrées et ceux de sortie. Après avoir proposé une clarification et une adaptation des notions d’inter- prétabilité et d’explicabilité telles qu’on les rencontre dans la littérature déjà abondante sur le sujet, nous montrons dans cet article l’intérêt de mettre en œuvre les distinctions épistémologiques entre les différentes fonctions épistémiques d’un modèle, d’une part, et entre la fonction épistémique et l’usage d’un modèle, d’autre part. Enfin, la dernière partie de cet article présente nos travaux en cours sur l’évaluation d’une explication, qui peut être plus persuasive qu’informative, ce qui peut ainsi causer des problèmes d’ordre éthique. (shrink)

Einstein’s theory of Special relativity is founded on an error made by Hendrick Lorentz. It is not necessary to expose the mathematical inconsistencies of special relativity, since the theory collapses by simply exposing the error made by Lorentz. In doing so, it not only causes special relativity to collapse, but also general relativity, and the many theories built upon these two deceptive theories. There are many claims of tests made which supposedly prove SR or GR, such as the eclipse of (...) 1919, the Hafele-Keating experiment, GPS, the orbit of Mercury, and muons. The error of these will also be shown as well as an area of astronomy which has been negatively impacted by SR. The epistemology approach to special relativity: you can know it is a false theory when the theory requires deceiving the student for acceptance and the tests which support the theory can be proven false. (shrink)

Though Heidegger’s Being and Time is often cited as one of the most important philosophical works of the last hundred years, its Division Two has received relatively little attention. This outstanding collection corrects that, examining some of the central themes of Division Two and their wide-ranging and challenging implications. An international team of leading philosophers explore the crucial notions that articulate Heidegger’s concept of authenticity, including death, anxiety, conscience, guilt, resolution and temporality. In doing so, they clarify the bearing of (...) Division Two’s reflections on our understanding of intentionality, normativity, responsibility, autonomy and selfhood. These discussions raise important questions about how we may need to rethink the morals of Division One of Being and Time , the broader project to which that book was devoted, the shaping influence of figures such as Aristotle and Kierkegaard, as well as Heidegger’s relationship with his contemporaries and successors. Essential reading for students and scholars of Heidegger’s thought, and anyone interested in key debates in phenomenology, ethics, metaphilosophy and philosophy of mind. Contributors: William Blattner, Clare Carlisle, Taylor Carman, Steven Galt Crowell, Daniel O. Dahlstrom, Sophia Dandelet, Hubert Dreyfus, Charles Guignon, Jeffrey Haynes, Stephan Käufer, Denis McManus, Stephen Mulhall, George Pattison, Peter Poellner, Katherine Withy, Mark A. Wrathall. (shrink)

Causal pre-emption scenarios are problematic for the counterfactual framework of causation (CFC) because people judge an action to be the actual cause of an outcome although the outcome would have occurred anyway due to the action of a pre-empted alternative cause. We propose that commonsense causal questions typically probe specific events that actually happened as and how they did, and show that counterfactuals that probe specific events match selections of actual cause, and dissociations only occur with non-specific counterfactuals. In addition, (...) the pre-empted action is often selected as the or an actual cause when it causes the pre-empting action (auto-pre-emption). Judgements of an action’s responsibility for the outcome track judgements of actual cause following the legal sine qua non principle. Agent reproach is also influenced by the agent's intention. The effects of causal dependency structure and counterfactual question type are robust across the intentionality of the pre-empting action and scenario content. (shrink)

Spinoza discovered and studied Descartes's philosophy at the school of Van den Enden and then at the University of Leiden. Spinoza is seen as providing metaphysical views of unparalleled audacity, which remain highly exciting and offer a source of inspiration and a source of theoretical models in a wide variety of fields, including neurobiology. The most general of Spinoza's intentions is to expound in accordance with “the prolix Geometric order” what Descartes had left in a more informal one. Spinoza's original (...) distance from Cartesian conceptions, before becoming obvious in the metaphysical views of the Ethics, is already noticeable in the TIE. In metaphysics, the Spinoza‐Descartes relationship is complex, but cannot be said to take the form of an implicit dialogue or a community of inspiration. Descartes's emphasis on the use of free will, the gap between the two authors in matters of moral anthropology is therefore quite limited. (shrink)

In 1484, humanist philosopher and theologian Marsilio Ficino published the first complete Latin translation of Plato's extant works. Students of Plato now had access to the entire range of the dialogues, which revealed to Renaissance audiences the rich ancient landscape of myths, allegories, philosophical arguments, etymologies, fragments of poetry, other works of philosophy, aspects of ancient pagan religious practices, concepts of mathematics and natural philosophy, and the dialogic nature of the Platonic corpus's interlocutors. By and large, Renaissance readers in the (...) Latin West encountered Plato's text through Ficino's translations and interpretation. -/- In Plato's Persona, Denis J.-J. Robichaud provides the first synthetic study of Ficino's interpretation of the Platonic corpus. Robichaud analyzes Plato's works in their original Greek and in Ficino's Latin translations, as well as Ficino's non-Platonic writings and correspondence, in the process uncovering new aspects of Ficino's intellectual work habits. In his letters and works, Ficino self-consciously imitated a Platonic style of prose, in effect devising a persona for himself as a Platonic philosopher. Plato's dialogues are populated with a wealth of literary characters with whom Plato interacts and against whom Plato refines his own philosophies. Reading through Ficino's translations, Robichaud finds that the Renaissance philosopher seeks an understanding of Plato's persona(e) among all the dialogues' interlocutors. In effect, Ficino assumed the role of Plato's Latin spokesperson in the Renaissance. -/- Plato's Persona is grounded in an extensive study of scholarship in Renaissance humanism, classics, philosophy, and intellectual history, and contextualizes Ficino's intellectual achievements within the contemporary Christian orthodox view of Platonism. Ficino was an influential figure in the early Italian Renaissance: the key intermediary between Greek and Latin, and between manuscript and print, giving voice to Plato and access to the ancient frameworks needed to interpret his dialogues. (shrink)

A common view about the phenomenology of episodic remembering has it that when we remember a perceptual experience, we can relive or re-experience many of its features, but not its characteristic presence. In this paper, we challenge this common view. We first say that presence in perception divides into temporal and locative presence, with locative having two sides, an objective and a subjective one. While we agree with the common view that temporal and objective locative presence cannot be relived in (...) remembering, we argue that subjective locative presence – the feeling of being immersed in a certain scene – can be so. Our argument for this claim starts by determining independently the underpinning mechanisms of subjective locative presence in quasi-perceptual imagination. These mechanisms are self-projection, imaginative pretence, and attentional focus. We then proceed to establish that they have been found to underpin conscious states of episodic remembering too. We conclude that episodic remembering can bring us to relive the subjective locative presence characteristic of a perceptual experience, and that the common view is mistaken. Our view – ‘mnemonic immersivism’ – has important consequences regarding the relationships between memory and imagination and the phenomenology of episodic remembering. (shrink)

What are the processes, from conception to adulthood, that enable a single cell to grow into a sentient adult? The processes that occur along the way are so complex that any attempt to understand development necessitates a multi-disciplinary approach, integrating data from cognitive studies, computational work, and neuroimaging - an approach till now seldom taken in the study of child development. Neuroconstructivism is a major new 2 volume publication that seeks to redress this balance, presenting an integrative new framework for (...) considering development. In the first volume, the authors review up-to-to date findings from neurobiology, brain imaging, child development, computer and robotic modelling to consider why children's thinking develops the way it does. They propose a new synthesis of development that is based on 5 key principles found to operate at many levels of descriptions. They use these principles to explain what causes a number of key developmental phenomena, including infants' interacting with objects, early social cognitive interactions, and the causes of dyslexia. The "neuroconstructivist" framework also shows how developmental disorders do not arise from selective damage to the normal cognitive system, but instead arise from developmental processes that operate under atypical constraints. How these principles work is illustrated in several case studies ranging from perceptual to social and reading development. Finally, the authors use neuroimaging, behavioural analyses, computational simulations and robotic models to provide a way of understanding the mechanisms and processes that cause development to occur. (shrink)

We show that for every c.e. degree a > 0 there exists an intrinsically c.e. relation on the domain of a computable structure whose degree spectrum is {0, a}. This result can be extended in two directions. First we show that for every uniformly c.e. collection of sets S there exists an intrinsically c.e. relation on the domain of a computable structure whose degree spectrum is the set of degrees of elements of S. Then we show that if α ∈ (...) ω∪{ω } then for any α-c.e. degree a > 0 there exists an intrinsically α-c.e. relation on the domain of a computable structure whose degree spectrum is {0, a}. All of these results also hold for m-degree spectra of relations. (shrink)

Avant l'âge des Lumières, on tolérait mal la religion des autres, ou alors avec réticence, comme une anomalie qu'il fallait souffrir sans l'accepter. La "tolérance des Modernes", élaborée par de grands penseurs comme Locke et Voltaire, renversait la perspective : elle mettait en place un système harmonieux de coexistence paisible entre les groupes les plus divers, tout en prônant de nouveaux droits la liberté de conscience et la liberté d'exercer sa religion dans l'espace public. Cette nouvelle conception n'allait pas de (...) soi. Elle donne à voir des éléments précurseurs en des lieux aussi divers que l'Empire ottoman et le ghetto de Venise. Après de nombreuses querelles politiques et théologiques, elle s'est enracinée en Hollande, en Angleterre, en France et dans les colonies d'Amérique. Denis Lacorne observe les manifestations les plus récentes de la tolérance dans le monde contemporain, il en analyse les usages et les limites, qu'il s'agisse des symboles religieux, de monuments, de manières de s'habiller, de ce qu'il est permis de dire et de proférer. De l'Europe au Nouveau Monde, les territoires de la tolérance n'ont cessé de s'étendre, des déistes aux athées, des baptistes aux quakers, des sikhs aux musulmans. Aujourd'hui la tolérance demeure une vertu contestée : le retour du religieux, la montée des fanatismes menacent le projet émancipateur des philosophes. Faut-il imposer des bornes à la liberté d'expression? Doit-on tolérer les ennemis de la tolérance? Pour y répondre, il nous faut redécouvrir cette grande tradition afin de mieux la défendre."--Page 4 of cover. (shrink)

Michael Psellos ist ein Philosoph, der wie kein anderer für die byzantinische Epoche steht. Das Denken dieses Großintellektuellen – der in subtilen Auseinandersetzungen mit antiken und spätantiken Positionen in Theologie, Ontologie und Ethik eine selbständige christliche Philosophie formuliert – findet in diesem Band erstmalig eine monographische Gesamtdarstellung. Die Arbeit liefert durch ihren systematischen Charakter, durch die Einbeziehung bisher nicht interpretierter Texte, durch die Darlegung der bisherigen Forschungsergebnisse und durch die Aufdeckung von Traditioinslinien eine wichtige Grundlage für die weitere Erforschung der (...) byzantinischen Philosophie. (shrink)

The dual character of invariance under transformations and definability by some operations has been used in classical works by, for example, Galois and Klein. Following Tarski, philosophers of logic have claimed that logical notions themselves could be characterized in terms of invariance. In this article, we generalize a correspondence due to Krasner between invariance under groups of permutations and definability in L∞∞ so as to cover the cases that are of interest in the logicality debates, getting McGee’s theorem about quantifiers (...) invariant under all permutations and definability in pure L∞∞ as a particular case. We also prove some optimality results along the way, regarding the kinds of relations which are needed so that every subgroup of the full permutation group is characterizable as a group of automorphisms. (shrink)

This paper explores a variety of kinds of apparent disagreement of which it may be held that they involve failure to disagree in that, at least in some broad sense, the disputants use the same words to express different meanings or concepts. It is argued that it is hard to rebut the claim that some apparent disagreements about personal identity fall into a particular sub-category of this broad type. I conclude both that a "constrained" relativism which I call "quasi-relativism" is (...) appropriate in regard to some central personal-identity debates, and also that, in order to avoid the lamentable conclusion that there is no real disagreement at all in these debates, we should embrace the idea that there is a non-cognitive element in personal identity claims, in virtue of the tight conceptual relations between personal identity claims and value claims of various kinds. (shrink)