Ramsey’s theorem asserts that every k-coloring of $[\omega ]^n$ admits an infinite monochromatic set. Whenever $n \geq 3$, there exists a computable k-coloring of $[\omega ]^n$ whose solutions compute the halting set. On the other hand, for every computable k-coloring of $[\omega ]^2$ and every noncomputable set C, there is an infinite monochromatic set H such that $C \not \leq _T H$. The latter property is known as cone avoidance.In this article, we design a natural class of Ramsey-like theorems encompassing (...) many statements studied in reverse mathematics. We prove that this class admits a maximal statement satisfying cone avoidance and use it as a criterion to re-obtain many existing proofs of cone avoidance. This maximal statement asserts the existence, for every k-coloring of $[\omega ]^n$, of an infinite subdomain $H \subseteq \omega $ over which the coloring depends only on the sparsity of its elements. This confirms the intuition that Ramsey-like theorems compute Turing degrees only through the sparsity of its solutions. (shrink)

The horse was essential to past human societies but became a recreational animal during the twentieth century as the world became increasingly mechanized. As the author reviews here, recent studies of ancient genomes have revisited the understanding of horse domestication, from the very early stages to the most modern developments. They have uncovered several extinct lineages roaming the far ends of Eurasia some 4000 years ago. They have shown that the domestic horse has been significantly reshaped during the last millennium (...) and experienced a sharp decline in genetic diversity within the last two centuries. At a time when no truly wild horses exist any longer, this calls for enhanced conservation in all endangered populations. These include the Przewalski's horse native to Mongolia, and the many local breeds side‐lined by the modern agenda, but yet representing the living heritage of over five millennia of horse breeding. (shrink)

Iniciando pela caracterização clássica de intencionalidade proporcionada por Brentano, nós fazemos uma revisão crítica da proposta enativista radical com relação à cognição básica no intuito de mostrar que o pressuposto de que nada ficaria perdido com a remoção dos compromissos representacionalistas da teleosemântica é injustificado. Argumentamos que algumas características importantes da cognição básica ficam perdidas com a RE(C)tificação da teleosemântica, as quais resgatamos pelo esboço de uma alternativa cunhada atributivismo-de-conteúdo livre de compromissos metafísicos.

Things should be made as simple as possible, but not simpler.–Albert Einstein.

Lors d’un entretien récent Natalie Zemon Davis soulignait opportunément : « […] the study of the past provides rewards for moral sensibility and tools for critical understanding. No matter how evil the times, no matter how immense the cruelty, some elements of opposition or kindness and godness emerge. No matter how bleak and constrained the situation, some forms of improvisation and coping take place. No matter what happens, people go on telling stories about it and bequeath them to the futu..

L’auteur propose d’interroger deux aspects de la temporalité psychique à l’œuvre dans les pratiques éducatives. D’une part, la modalité du temps qui s’articule au registre de la Loi et participe à son expression (temps du Surmoi), d’autre part ce qui tient à la dynamique des désirs, à l’interfantasmatisation, à l’assise imaginaire de l’éducation et qui participe au fondement du sens même de tout projet (de vie, ou professionnel) pour les adolescents.

Elie Halévy's later works have made him one of the most renowned French liberal thinkers of the twentieth century. I want to argue, however, that there exists another facet of the man, more republican than liberal, to be found in his pre-Great War papers. Halévy reveals himself as a man with reformist tendencies, concerned with the concrete aspects of freedom, both for individuals and peoples, and therefore holding more qualified views on the project of a political and social control of (...) the economy. My analysis focuses on Halévy's unpublished first series of lectures on the history of European Socialism, delivered in 1902 at the Ecole Libre des Sciences Politiques, in which the major features of this early Halévy can be best identified. (shrink)

Dijkerman & de Haan (D&dH) study perception and action as two independent processes. However, in all daily activities the processes are completely intertwined, so it is difficult to separate one from the other. Humans perceive in order to move and also move in order to perceive. Understanding first how perception and action are coordinated, leads us then to determine how each component works independently.

The Erdős–Moser ([Formula: see text]) theorem says that every infinite tournament admits an infinite transitive subtournament. We study the computational behavior of the [Formula: see text] theorem with respect to the arithmetic hierarchy, and prove that [Formula: see text] instances of [Formula: see text] admit low[Formula: see text] solutions for every [Formula: see text], and that if a set [Formula: see text] is not arithmetical, then every instance of [Formula: see text] admits a solution relative to which [Formula: see text] (...) is still not arithmetical. We also provide a level-wise refinement of this theorem. These results are part of a larger program of computational study of combinatorial theorems in Reverse Mathematics. (shrink)

Jean Klein a été l'un des principaux passeurs de la non-dualité indienne (advaita) et du yoga en France. Il a exercé et continue d'exercer une influence considérable dans les cercles de chercheurs spirituels. Dans cet ouvrage, Ludovic Fontaine a choisi d'interviewer trois enseignants, trois des principaux élèves de Jean Klein, qui s'inscrivent de manière originale et ouverte dans la perspective de leur maître. Eric Baret, Francis Lucille, et Jean-Marc Mantel présentent ici leur parcours spirituel, leur perspective propre sur la (...) non-dualité, l'éveil, la nature de la réalité. Ludovic les interroge également sur leur méthode d'enseignement : comment transmettent-ils l'éveil? Quel est leur rapport aux traditions (advaita vedanta, tantrisme cachemirien, yoga)? Quelles pratiques préconisent-ils? Qu'est-ce que ces pratiques non-duelles peuvent changer dans notre vie? Chacun pourra trouver dans ces magnifiques entretiens des renseignements précieux sur le chemin vers la liberté et la joie."--Page 4 of cover. (shrink)

In this article, I show and discuss the relevance of Wittgenstein's arguments as to the spatial structure of sight to recent issues in the philosophy of mind. The first, bearing upon the dimensionality of the manifolds at play in depiction, plays a critical role in Clark's attempt to provide an independent account ofqualiaand of their differentiative properties. The second, pertaining to the properly spatial structure formed by the data of sight, is explicitly appealed to in the debate on the realistic (...) character of any genuinely spatial scheme. I argue that if Wittgenstein rightly assumes that the simultaneous presence of sensible places in vision is a key condition for objectivity, he fails nevertheless to warrant the allegedly realistic character of the scheme employed in his own search for a phenomenological description of the visual field. (shrink)

Using semantic and syntactic methods, we prove the compatibility of the truth of universally quantified slurring sentences of the form [all Ss are Ns] or [all Ss are S*s] with the existential core of moral and semantic innocence. We also show that proving their mutual compatibility by means of logic leaves untouched the moral problem tied to their material truth. Finally, we trace the problem back to the failure to signal in the spelling of the slurring term’s meaning that the (...) derogatory concept it denotes is not universally accepted. (shrink)

No presente verbete faço a revisão crítica de algumas entre as mais expressivas tentativas de resolver o chamado ‘problema da dinâmica cognitiva’. De acordo com Kaplan (1989) – que é responsável pelo próprio apelido, a questão que se coloca é: o que significa dizer de uma pessoa que expressou uma crença particular num determinado contexto de proferimento que ela reteve ou mudou de crença fora desse contexto? E caso ajustes (linguísticos, psicológicos) sejam necessários para manter a relação com o conteúdo (...) semântico original, quais são nossas intuições a respeito de casos em que um sujeito cognitivamente saudável perdeu temporariamente a noção do tempo e/ou a capacidade de rastrear objetos no espaço? Exploro diversas respostas a essas perguntas com o intuito de dizer se elas conseguem acomodar os fatos (semânticos, epistêmicos, cognitivos) aí envolvidos. Abstract: In this paper I review some of the most significant attempts to solve the so-called ‘problem of cognitive dynamics’. According to Kaplan (1989), who coined the phrase, the following questions arise – as to the topic: what does it means to say of an individual who expressed a particular belief in a given context of utterance that he/she has re tained orchanged his/her mind with respect to it once the context is left? And assuming that (linguistic or psychological) adjustments are required to keep on being related to the original semantic content, what are our intuitions about the case of a cognitively healthy subject who temporarily lost the ability to keep track of time and/or objects in space? I investigate different ways of answg those questions with a view to saying whether they accommodate all the relevant (semantic, epistemic, cognitive) facts or not. (shrink)

A better understanding of media effects on immigration attitudes is crucial for policy development and innovation. While many studies have focused on immigration discourses or the salience of this issue in print media and broadcast TV, few have looked at how different “media diets” influence immigration attitudes. Using two-wave panel data composed of 14,480 observations (7,240 individuals) from nine EU countries, this article specifically analyses the role of online and social media news consumption as well as media diet diversity on (...) Europeans’ perceptions of the economic and cultural impact of immigration. The results show that relying primarily on online or social media (compared to print newspapers) to get news, consuming news less frequently, or having a less diverse media diet all significantly and negatively influence people’s perceptions of the impact of immigration. Results and implications are discussed in light of today’s changing media landscape and news consumption habits. (shrink)

Publié initialement en 1982, l’ouvrage de Marco Bianchini Alle origini della scienza economica : felicita pubblica e matematica sociale negli economisti italiani del settecento (1711-1803) est désormais accessible au public français dans une traduction proposée par Pierre Crépel. En première approximation, ce travail a le grand mérite d’interroger quelques pratiques traditionnelles de l’histoire de la pensée économique. Il rappelle opportunément que des épisodes significatifs, révolutionnaire..

ABSTRACT This introduction examines the intellectual, political, economic, and social context to the reception of Robert Owen’s ideas, and Owenism more generally, in Continental Europe. The introduction describes how Owen’s ideas attracted significant interest in the years following the Napoleonic Wars, particularly in France, and discusses how the French reception of his ideas served as a filter and medium through which his ideas were disseminated throughout Continental Europe. The article describes the individual contributions to this special issue and traces the (...) story of how Owen’s ideas never attracted in Continental Europe the widespread interest they enjoyed in Britain, Ireland, or America. (shrink)

ABSTRACT This article examines the impact of Robert Owen’s educational ideas in France. It traces how his ideas attracted the attention of French liberals, particularly Charles de Lasteyrie, Alexandre de Laborde and Joseph-Marie de Gérando, and republicans associated with Marc-Antoine Jullien’s Revue Encyclopédique. The article focuses in particular on the work of one of Owen’s early French followers, the leading radical egalitarian political and social theorist Joseph Rey (1779–1855). The article examines how Owen’s reflections on education served as the foundation (...) for Rey’s own theoretical and practical contributions to educational philosophy and pedagogical reform. Drawing extensively from unpublished archive material, the article describes and analyses Rey’s detailed egalitarian critique of the work of educational theorist Joseph Jacotot, and explores how Rey advanced a far more ambitious philosophy of education that, when translated into practice, eliminated the traditional divide between manual skills and intellectual ability, resulting in a genuinely inclusive and comprehensive educational system. (shrink)

The integration of learning cognitive agents in the research agenda is an important step in the evolution of economics. However, relying on a retrospective analysis of the treatment of decision making in economics, this article argues that the cognitive programme aims to justify rational behaviour in an equilibrium framework rather than to integration an interpretative conception of agents' behaviour. As a consequence, the level of generality of analytical results remains limited and economists miss the opportunity to establish a discussion with (...) other social sciences. In particular, it fails to analyse a class of situations related to the problem of knowledge creation and the subsequent learning paradox. Building on recent advances in heterodox cognitive science, we suggest a behavioural approach that discriminates different learning situations. If applied, this approach would permit a better understanding of human behaviour and a richer analysis of coordination mechanisms in unfamiliar environment with no loss of rigour. (shrink)

Here, we propose that bidirectionality in implicit motor coordination between humanoid robots and humans could enhance the social competence of human–robot interactions. We first detail some questions pertaining to human–robot interactions, introducing the Uncanny Valley hypothesis. After introducing a framework pertinent for the understanding of natural social interactions, motor resonance, we examine two behaviors derived from this framework: motor coordination, investigated in and informative about human–human interaction, and motor interference, which demonstrate the relevance of the motor resonance framework to describe (...) human perception of humanoid robots. These two lines of investigation are then put together to “close the loop” by proposing to implement a key feature of motor coordination, bidirectionality, in robots’ behavior. Finally, we discuss the feasibility of implementing motor coordination between humanoid robots and humans, and the consequences of this implementation in enhancing the social competence of robots interacting with humans. Keywords: interpersonal interaction, motor resonance, motor coordination, motor interference, social robotics, anthropomorphism. (shrink)

Although robots can contribute to the understanding of biological behavior, they fail to model the processes by which humans cope with their environment. Both development and learning are characterized by complex relationships that require constant modification. Given present technology, robots can only model behaviors in specific situations and during discrete stages. Robots cannot master the complex relationships that are the hallmark of human behavior.

"À une époque où la cinéphilie n'est plus qu'une paraphilie parmi les autres, aussi estimable et inoffensive qu'une autre, en un temps où la sédition installée tient lieu d'horizon, il y a sans doute quelque naïveté à prétendre se démarquer de la modernité en se réclamant d'une "cinéphilie dissidente". Pourtant sous l'insurrection permanente, des règles intangibles et des principes incontestables demeurent, qu'il est nécessaire d'enfreindre. Derrière l'équivalence des opinions et la relativité des goûts, de nouvelles hiérarchies se sont bâties, qu'il (...) importe de renverser. Cette attitude d'opposition serait à son tour éminemment moderne s'il ne s'agissait par ce refus, de promouvoir une autre attention aux faits, une autre rapport à autrui, que ceux que notre époque favorise. Lorsque nous aurons admis que le cinéma moderne nous a dépossédés de nos mots, en y substituant les siens, qui décrivent de mille feux ce qui s'éteint, lorsque nous aurons saisi que nous ne parlons qu'en son non, ne répétons que ses désordres, ne prions que ses décalogues rafraîchis, nous aurons alors tout le temps de regretter notre silence. Dans ces conditions, c'est bien par l'écriture qu'il s'agit d'instaurer une relation cette fois intempestive avec l'image cinématographique. À travers le prisme de plus de deux cents films, mêlant la critique cinématographique et le journal intime, l'analyse et l'aphorisme, cet essai se propose de résister à la cinéphilie officielle, absolument indolore, qui n'est plus qu'une technique parmi d'autres d'embrigadement. Sous la forme d'abécédaire, de A comme Artifices à Z comme Zombies, en passant par l'Enfance, la Honte, le Messie, les Nazis ou la Pornocratie, il n'est autre qu'une tentat. (shrink)

v. 1. De Biran à Brunschvicg.--v. 2. Jean Nabert et après.

A partir d'une relecture de l'oeuvre de Wittgenstein étudie sa réfutation des théories philosophiques sur l'existence d'un champ propre aux sensations visuelles, ainsi que son projet phénoménologique de description de l'espace visuel.

Découverte en remploi dans l’angle du mur d’un bâtiment monumental d’époque impériale, au Sud‑Ouest de l’agora d’Amathonte, cette dédicace inédite en l’honneur des souverains lagides Ptolémée X et Bérénice III, désignés comme « dieux sauveurs », est un cas unique à Chypre. D’abord en raison de la rareté des attestations épigraphiques de ce couple royal qui gouverna depuis Alexandrie l’Empire lagide entre 101 et 88 ; ensuite, parce que l’épithète θεῶν Σωτήρων ne leur est que très rarement attribuée dans la (...) documentation, y compris dans les sources papyrologiques. Enfin, une étude de l’autel et de sa fonction comme élément de remplissage d’un mur à double pare­ment met aussi en lumière certaines caractéristiques de construction du monument où fut trouvé le document. (shrink)

A function is diagonally non-computable if it diagonalizes against the universal partial computable function. D.n.c. functions play a central role in algorithmic randomness and reverse mathematics. Flood and Towsner asked for which functions h, the principle stating the existence of an h-bounded d.n.c. function implies Ramsey-type weak König’s lemma. In this paper, we prove that for every computable order h, there exists an ω\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\omega}$$\end{document} -model of h-DNR which is not a not (...) model of the Ramsey-type graph coloring principle for two colors and therefore not a model of RWKL. The proof combines bushy tree forcing and a technique introduced by Lerman, Solomon and Towsner to transform a computable non-reducibility into a separation over ω\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\omega}$$\end{document} -models. (shrink)

Quoique l'on ne trouve qu'un nombre limité de références à Nicod dans les manuscrits de la période dite « intermédiaire » de Wittgenstein, une lecture attentive de La Géométrie dans le monde sensible s'avère pourtant décisive pour comprendre la nature du projet phénoménologique de Wittgenstein de la fin des années vingt. Nous nous proposons de montrer que la prise en compte ainsi que la reformulation du problème posé par Nicod en 1924, celui de la nature de la relation d'inclusion spatiale, (...) conduit Wittgenstein à remplacer dès 1929 l'ancien critère logique du simple et du complexe (celui du Tractatus logico-philosophicus) par un critère phénoménologico-grammatical inédit et désabsolutisé applicable à toute donnée visuelle quelle qu'elle soit. Plus généralement, la priorité donnée par Wittgenstein au visuel dans son « investigation phénoménologique des impressions sensorielles » trouve sa meilleure justification dans l'esquisse par Nicod d'une géométrie de la vision à la fois complète et indépendante. Nous montrons en particulier que les propriétés structurales du champ visuel mises au jour par Nicod dans sa construction (diversité et simultanéité des places sensibles, coloréité) sont tacitement utilisées par Wittgenstein pour justifier la possibilité d'une description phénoménologique conçue, précisément, comme description des places ou « localités » constitutives de cet espace perceptif. (shrink)

I discuss the view tentatively put forward by Recanati in Mental Files to turn two potentially contradictory claims compatible: the claim to the effect that acquaintance is a necessary condition of singular thought and the claim that we do entertain acquaintanceless singular thoughts (i.e. thoughts directed at particulars as particulars). Key to the proposal is a normative construal of the acquaintance constraint. I show the proposal as it stands is wanting, first, because the norm the users of descriptive names are (...) subject to has no (determinate) conditions of satisfaction within the framework ; second, because the kind of mental simulation involved in exploiting the norm in this type of case is misdescribed as a “local lapse into fiction” ; third, because it leaves the issue pertaining to the conditions of satisfaction of the acquaintance norm over time unaddressed. (shrink)