La réflexion philosophique, dont l'ouverture à l'univers dans lequel nous nous découvrons - avec une acuité proportionnelle à un étonnement renouvelé - n'a pas de limites, n'en est que plus tributaire des sciences et des techniques, des arts et de multiples activités qui régissent plus ou moins fructueusement notre expérience. Or, au sein des sciences humaines, privilégiées pour éclairer une condition que nous ne saurions cesser d'interpréter, peu d'oeuvres du dernier siècle auront enrichi en le précisant notre être-au-monde, comme la (...) théorie linguistique de Gustave Guillaume, assez solitaire, et les recherches multiformes de Jean Piaget - où la psychologie de l'enfant a souvent occulté la visée épistémologique et son enracinement biologique (cf Biologie et connaissance, 1967) et ses prolongements pédagogiques, voire éthiques. Le Cinquantenaire et le Trentenaire de leur disparition appelaient un hommage d'autant plus impératif qu'ils sont restés marginaux ou ignorés dans les milieux philosophiques, malgré la centralité de leurs élucidations. Leur commune orientation génétique et structurale n'ayant suscité aucun échange, pendant la contemporanéité de publications d'un tiers de siècle (1923-1960), mesurer leur complémentarité s'impose d'autant plus. S'ils peuvent aider à repenser la condition humaine, c'est qu'ils auront contribué à dissiper le "mystère de la pensée". L'un cherchant à habiliter les caractères systématique et cinétique des langues, irremplaçables moyens de penser ; l'autre dans un vis-à-vis cognitif et opératoire de Freud, en relavant sur les plans épistémologique et logique, notamment, l'élan révolutionnaire de la seconde modernité, autour de l'évolutionnisme. Mais les thèmes majeurs du constructivisme, du schème et de la symbolisation - et plus largement du temps et du langage - auront sans doute aidé à spécifier les mutations autorisées par la révolution critique. Entre l'Instant du je parle et un décentrement exigible pratiquement (éthique) comme théoriquement (épistémique), c'est bien la condition humaine dans son ensemble qui est concernée. Si repenser cette Condition s'impose en permanence, il importe de ne pas manquer des oeuvres qui, par-delà toute mode, proposent à notre expérience des fondations résistant à d'inéluctables vicissitudes. (shrink)

At least since Francis Bacon, the slogan “knowledge is power” has been used to capture the relationship between decision-making at a group level and information. We know that being able to shape the informational environment for a group is a way to shape their decisions; it is essentially a way to make decisions for them. This paper focuses on strategies that are intentionally, by design, impactful on the decision-making capacities of groups, effectively shaping their ability to take advantage of information (...) in their environment. Among these, the best known are political rhetoric, propaganda, and misinformation. The phenomenon this paper brings out from these is a relatively new strategy, which we call slopaganda. According to The Guardian, News Corp Australia is currently churning out 3000 “local” generative AI (GAI) stories each week. In the coming years, such “generative AI slop” will present multiple knowledge-related (epistemic) challenges. We draw on contemporary research in cognitive science and artificial intelligence to diagnose the problem of slopaganda, describe some recent troubling cases, then suggest several interventions that may help to counter slopaganda. (shrink)

What I call "strategic injustice" involves a set of formal and informal regulatory rules and conventions that often lead to grossly unfair outcomes for a class of individuals despite their resistance. My goal in this paper is to provide the necessary conditions for such injustices and for eliminating their instances from our social practices. To do so, I follow Peter Vanderschraaf's analysis of circumstances of justice and expand his account by embedding "asymmetric conflictual coordination games" that summarize fair division problems (...) in a dynamic social network. I use the network effect on such coordination games to explain the emergence of stable exploitative behavior and conventions by a class of individuals even in the presence of restraining efforts by others. I conclude that such unfair conventions are resilient to uncoordinated individual actions and interventions. In fact, maintaining a rough equality itself turns into another coordination problem. Finally, I show that something similar to a social movement that restructures the network of social relations is necessary to solve such coordination problems. (shrink)

Representing an epistemic situation involving several agents obviously depends on the modeling point of view one takes. We start by identifying the types of modeling points of view which are logically possible. We call the one traditionally followed by epistemic logic the perfect external approach, because there the modeler is assumed to be an omniscient and external observer of the epistemic situation. In the rest of the paper we focus on what we call the internal approach, where the modeler is (...) one of the agents involved in the situation. For this approach we propose and axiomatize a logical formalism based on epistemic logic. This leads us to formalize some intuitions about the internal approach and about its connections with the external ones. Finally, we show that our internal logic is decidable and PSPACE-complete. (shrink)

A thorough and closely argued examination of a central issue in philosophical logic, an issue which is shown to have profound implications for the philosophy of language and much of metaphysics.

Figures majeures du moment théorique de la pensée française, R. Barthes et M. Foucault ont également été professeurs. Au Collège de France, ils n'ont eu de cesse d'esquiver l'ordre du discours. A partir d'une analyse génétique de la fabrique menant de l'archive enseignante au livre, l'essai fait dialoguer cours et oeuvre, afin de cerner le propre d'une attention constante et inquiète au discours.

Guillaume Collett questions to what extent we can locate Deleuze within the Lacanian School during the late-1960s, prior to Guattari. In so doing, he offers a new, integrated reading of Deleuze's The Logic of Sense by understanding it as a 'psychoanalysis of sense', and gives a new interpretation of Deleuze's conception of philosophy itself. The Psychoanalysis of Sense shows that Deleuze was not merely aware of the debates animating the Lacanian School during the 1960s: he sought to contribute to (...) them. Emphasising his appropriation of the work of post-Lacanian Serge Leclaire, Collett explains how Deleuze constructed a more singular and immanent theory of the linguistic structure of the unconscious - granting the erogenous body a larger structuring role. (shrink)

La Rhétorique propose une théorie de la réception et du public, logée à l'intérieur d'une théorie de la production du discours. Cette perspective débouche sur une critique de la « manipulation » et suggère un champ d'intervention possible pour les Sic face à la prégnance de ce vocable et de cet imaginaire de la manipulation pour défendre, à l'inverse, une analyse circonstanciée des formes rhétoriques et argumentatives à l'oeuvre dans les discours médiatiques.Rhetorics can be seen as a theory of reception (...) and of the audience, within a theory of the way discourse is produced. This view leads to a critique of the "manipulation" paradigm and suggests that information and communication sciences may defend the need for a circumstantial analysis of the rhetoric and argumentative forms which are operating through mediatic discourses against the ideas and vocabulary of manipulation. (shrink)

Understanding a normative concept like oppression requires attention to not only its harms but also the causes of those harms. In other words, a complete understanding of such a concept requires a proper causal explanation. This causal explanation can also inform and constrain our moral response to such harms. Therefore, the conceptual explanatory framework that we use to inform our moral diagnosis and our moral response become significant. The first goal of this dissertation is to propose complexity theory as the (...) proper framework for not only explaining a social phenomenon like oppression but also understanding the proper sites for social change. The second goal of this dissertation is to answer three interrelated questions about how we should respond, morally, to a chronic and complex social problem like racial or gender inequality: (1) Why do the current interventions to address these problems fail? (2) Do social movements play any unique role in addressing these problems? (3) What is our individual responsibility to participate in social movements? In response, I argue that the explanatory frameworks that we choose to understand the cause(s) of social problems can be the source of the inadequacy of our intervention. I argue that a proper social and moral intervention needs to capture the complex and dynamic nature of the social world. I also show that changing the explanatory framework allows us to see the unique role social movements play in making effective and sustainable social change possible. Finally, I conclude supporting such movements is a moral imperative. (shrink)

My goal is to help us see the importance of social connections to social change in even our conceptual toolbox regarding social transformation. I compare and summarize two discussions about the political value of hope: one in Western modern political thought and the other in non-violent movements and their subsequent philosophy. I follow Michelle Moody- Adams’ conviction that visionaries and intellectuals of constructive social movements ground political hope in collectives rather than in individuals, as Western political philosophy tends to do. (...) However, I suggest that the proper interpretation of a collectivist hope requires attention to the people with whom we hope. (shrink)

In this paper, I argue in favor of a structural turn in social contract theory. More precisely, I argue that dealing with the complex and dynamic nature of the social world requires an emphasis on social structures greater than what contractarians often consider. I take structures to be the dynamic and non-random networks of interdependence among all active components that shape society. I also constrain my focus to a growing body of literature on diversity that explores plausible contractarian alternatives given (...) the complexity of modern societies. I argue that shifting weight from diversity to structures in theorizing alternative contractarian frameworks would be an improvement. (shrink)

YouTube has been implicated in the transformation of users into extremists and conspiracy theorists. The alleged mechanism for this radicalizing process is YouTube’s recommender system, which is optimized to amplify and promote clips that users are likely to watch through to the end. YouTube optimizes for watch-through for economic reasons: people who watch a video through to the end are likely to then watch the next recommended video as well, which means that more advertisements can be served to them. This (...) is a seemingly innocuous design choice, but it has a troubling side-effect. Critics of YouTube have alleged that the recommender system tends to recommend extremist content and conspiracy theories, as such videos are especially likely to capture and keep users’ attention. To date, the problem of radicalization via the YouTube recommender system has been a matter of speculation. The current study represents the first systematic, pre-registered attempt to establish whether and to what extent the recommender system tends to promote such content. We begin by contextualizing our study in the framework of technological seduction. Next, we explain our methodology. After that, we present our results, which are consistent with the radicalization hypothesis. Finally, we discuss our findings, as well as directions for future research and recommendations for users, industry, and policy-makers. (shrink)

Many results in logic and mathematics rely on techniques that allow for concrete, often visual, representations of abstract concepts. A primary example of this phenomenon in logic is the distinction between syntax and semantics, itself an example of the more general duality in mathematics between algebra and geometry. Such representations, however, often rely on the existence of certain maximal objects having particular properties such as points, possible worlds or Tarskian first-order structures. -/- This dissertation explores an alternative to such representations (...) known as possibility semantics. Its core idea is to replace maximal objects with ordered systems of partial approximations. Although it originates in the semantics of modal logic and the representation of abstract ordered structures, I argue that it has far-reaching mathematical, foundational and philosophical significance, especially in the context of semiconstructive mathematics, a foundational framework that does not assume any fragment of the Axiom of Choice beyond the Axiom of Dependent Choices. -/- The dissertation is divided in two main parts. The first part explores various applications of the mathematical framework underlying possibility semantics to lattice theory and non-classical propositional logics. A major theme is the development of constructive dualities for various categories of lattices, which are related to standard non-constructive dualities via Vietoris constructions. -/- The second part of the dissertation explores the alternative foundational setting of semi-constructive mathematics, focusing on three applications of possibility semantics for classical first-order logic to the philosophy of the mathematical infinite. In particular, we introduce generic powers, a semi-constructive analogue of ultrapowers in classical model theory, and we explore the merits of these structures from a foundational, conceptual and historical viewpoint. (shrink)

Galileo asked in his Dialogue of the Two New Sciences what relationship exists between the size of the set of all natural numbers and the size of the set of all square natural numbers. Although one is a proper subset of the other, suggesting that there are strictly fewer squares than natural numbers, the existence of a simple one-to-one correspondence between the two sets suggests that they have, in fact, the same size. Cantor famously based the modern notion of cardinality (...) on the second intuition, but recent advances in mathematical logic (most notably, numerosity theory) have renewed an interest in the question whether Cantor’s way out of Galileo’s paradox was the only possible one. I present a new solution to Galileo’s paradox and argue that it is a better alternative to the Cantorian solution than numerosity theory. In fact, I argue that it is the best possible way out of Galileo's Paradox that can be based on the "Euclidean" intuition that the whole is always greater than any of its proper parts. (shrink)

Le manuel de sophismes politiques de Bentham se fixait pour objectif de dénoncer un certain nombre de raisonnements fallacieux destinés à entraver les propositions de réforme politique. Il définissait ainsi comme sophisme « tout argument avancé ou tout sujet de discussion suggéré afin de, ou avec la probabilité de produire l’effet de tromper ou de causer quelque opinion erronée susceptible d’être admise par toute personne dont l’esprit a pu se trouver mis en présence de cet argument ». Si Ben..

Using an alternative to Tarskian semantics for first-order logic known as possibility semantics, I introduce an approach to nonstandard analysis that remains within the bounds of semiconstructive mathematics, i.e., does not assume any fragment of the Axiom of Choice beyond the Axiom of Dependent Choices. I define the Fr´echet hyperreal line †R as a possibility structure and show that it shares many fundamental properties of the classical hyperreal line, such as a Transfer Principle and a Saturation Principle. I discuss the (...) technical advantages of †R over some other alternative approaches to nonstandard analysis and argue that it is well-suited to address some of the philosophical and methodological concerns that have been raised against the application of nonstandard methods to ordinary mathematics. (shrink)

Volume 32, Issue 1, March 2019, Page 67-69.

À la une du Soap opera digest daté du 8 mars 2011, cinq photographies barrées d’un titre composé en capitales italiques, rouges et oranges, qui se détachent sur un fin halo blanc: « SHOCKING CAST SWITCHES! » (« CHANGEMENTS CHOQUANTS DE DISTRIBUTION! »). Sur la rangée supérieure, à gauche du titre bleu cyan, l’image d’une femme, Natalia Livingston, jouxte celle d’une autre, Tamara Braun – reliées l’une à l’autre par le laconique verdict « Replaced ! » (« Remplacée ! ») (...) que surplombe la mention.. (shrink)

This paper introduces the category of b-frames as a new tool in the study of complete lattices. B-frames can be seen as a generalization of posets, which play an important role in the representation theory of Heyting algebras, but also in the study of complete Boolean algebras in forcing. This paper combines ideas from the two traditions in order to generalize some techniques and results to the wider context of complete lattices. In particular, we lift a representation theorem of Allwein (...) and MacCaull to a duality between complete lattices and b-frames, and we derive alternative characterizations of several classes of complete lattices from this duality. This framework is then used to obtain new results in the theory of complete Heyting algebras and the semantics of intuitionistic propositional logic. (shrink)

Corporate codes of ethics, which have spread in the last decades, have shown a limited ability to foster ethical behaviors. For instance, they have been criticized for relying too much on formal compliance, rather than taking into account sufficiently agents and their moral development, or promoting self-reflexive behaviors. We aim here at showing that a code of ethics in fact has meaning and enables ethical progress when it is interpreted and appropriated with practical wisdom. We explore a model that represents (...) an uncommon organizational code of ethics: the monastic Rule of St. Benedict, written in the sixth century and still used today. Our empirical study—conducted in several monasteries living under this rule—shows that organization members interpret this rule, both hermeneutically and ethically, to adapt it to situations. They also appropriate this rule as a way of life and treat it as a dynamic framework that helps them to follow their purpose within their organization. This exceptional code actually offers an alternative model for practicing codes of ethics, in a virtue-ethical manner, beyond mere compliance with the text. The way in which reflexive and active agents practice the code, both individually and collectively, shapes their organizational experience and fosters their moral development. (shrink)

L’évaluation est à la mode et la référence à ses vertus est de bon ton. La sphère publique n’y échappe pas. Le président de la République et le Premier ministre ont ainsi décidé, il y a un an, la création d’un secrétariat d’État chargé, entre autres choses, de l’évaluation des politiques publiques. Pour autant, il ne s’agit pas d’une révolution. L’évaluation des..

From Newton da Costa’s works, many people in France know only the revival of paraconsistency. We give some reasons in defence of investigations in this part of logic. But above all we recall one of the major contributions of Newton da Costa: his proof, in 1991, in collaboration with Doria, of the gödelian undecidability of motion in mathematical physics, a result which was somewhat foreseen on other grounds by Duhem in 1906.

RésuméDans Fellow creatures, Christine Korsgaard soutient que les êtres humains auraient l'obligation morale de traiter les animaux sensibles comme des fins en soi. Cependant, cet article tente de démontrer que la méthode korsgaardienne dépasse ce que permet une théorie constructiviste conséquente et soutient que nous devrions opter pour une version humienne plutôt que kantienne du constructivisme. Selon moi, une telle conception permet tout à fait de soutenir des positions éthiques substantielles sur la question animale sans avoir à compromettre ses engagements (...) ontologiques. (shrink)

The Grand Challenges literature brings under its umbrella a wide variety of disjointed phenomena but runs the risk of reinventing the wheel as well as overlooking incremental progress and past work. To avert this, scholars need to (dis)connect (dis)similar issues, build on past research on these issues, and create opportunities for generalizability through theoretical examinations.

Unlike in physics, the category of thought experiment is not very common in biology. At least there are no classic examples that are as important and as well-known as the most famous thought experiments in physics, such as Galileo’s, Maxwell’s or Einstein’s. The reasons for this are far from obvious; maybe it has to do with the fact that modern biology for the most part sees itself as a thoroughly empirical discipline that engages either in real natural history or in (...) experimenting on real organisms rather than fictive ones. While theoretical biology does exist and is recognized as part of biology, its role within biology appears to be more marginal than the role of theoretical physics within physics. It could be that this marginality of theory also affects thought experiments as sources of theoretical knowledge. Of course, none of this provides a sufficient reason for thinking that thought experiments are really unimportant in biology. It is quite possible that the common perception of this matter is wrong and that there are important theoretical considerations in biology, past or present, that deserve the title of thought experiment just as much as the standard examples from physics. Some such considerations may even be widely known and considered to be important, but were not recognized as thought experiments. In fact, as we shall see, there are reasons for thinking that what is arguably the single most important biological work ever, Charles Darwin’s On the Origin of Species, contains a number of thought experiments. There are also more recent examples both in evolutionary and non-evolutionary biology, as we will show. Part of the problem in identifying positive examples in the history of biology is the lack of agreement as to what exactly a thought experiment is. Even worse, there may not be more than a family resemblance that unifies this epistemic category. We take it that classical thought experiments show the following characteristics: They serve directly or indirectly in the non-empirical epistemic evaluation of theoretical propositions, explanations or hypotheses. Thought experiments somehow appeal to the imagination. They involve hypothetical scenarios, which may or may not be fictive. In other words, thought experiments suppose that certain states of affairs hold and then try to intuit what would happen in a world where these suppositions are true. We want to examine in the following sections if there are episodes in the history of biology that satisfy these criteria. As we will show, there are a few episodes that might satisfy all three of these criteria, and many more if the imagination criterion is dropped or understood in a lose sense. In any case, this criterion is somewhat vague in the first place, unless a specific account of the imagination is presupposed. There will also be issues as to what exactly “non-empirical” means. In general, for the sake of discussion we propose to understand the term “thought experiment” here in a broad rather than a narrow sense here. We would rather be guilty of having too wide a conception of thought experiment than of missing a whole range of really interesting examples. (shrink)

Dynamic Epistemic Logic (DEL) deals with the representation and the study in a multi-agent setting of knowledge and belief change. It can express in a uniform way epistemic statements about: 1. what is true about an initial situation 2. what is true about an event occurring in this situation 3. what is true about the resulting situation after the event has occurred. We axiomatize within the DEL framework what we can infer about (iii) given (i) and (ii). Given three formulas (...) φ,φ' and φ" describing respectively (i), (ii) and (iii), we also show how to build a formula φ ? φ' which captures all the information which can be inferred about (iii) from φ and φ'. We show how our results extend to other modal logics than K. In our proofs and definitions, we resort to a large extent to the normal form formulas for modal logic originally introduced by Kit Fine. In a companion paper (Aucher, 2012), we axiomatize what we can infer about (ii) given (i) and (iii), and what we can infer about (i) given (ii) and (iii), and show how to build two formulas φ ? φ" and φ' ? φ" which capture respectively all the information which can be inferred about (ii) from φ and φ", and all the information which can be inferred about (i) from φ' and φ". (shrink)

La traduction, que les romantiques pratiquent abondamment, concourt à mettre en œuvre un horizon philosophique et culturel complexe. Elle permet de potentialiser les œuvres en les ouvrant à leur sens universel. Celui-ci est ce qui constitue la norme de la traduction au détriment de l’intention de l’auteur et de la compréhension du lecteur. Du point de vue dynamique de la culture romantique, la traduction est le moyen qui permet de transformer une œuvre close sur elle-même en une tendance à se (...) rapporter à l’infini. La traduction, en cultivant l’idée d’universel, prépare le dialogue polémique sur l’universel qu’accomplit la critique. Elle est moins la trahison de l’œuvre que son ouverture à l’infini. Le romantisme nous lègue par là un premier jalon en vue d’une constitution moderne de la traductologie comme science. La traduction y est en effet moins envisagée comme le milieu prosaïque d’un échange, que comme le levier potentialisant d’un progrès culturel. (shrink)