In the historical context of a crisis in biological psychiatry, psychedelic drugs paired with psychotherapy are globally re-emerging in research clinics as a potential transdiagnostic therapy for treating mood disorders, addictions, and other forms of psychological distress. The treatments are poised to soon shift from clinical trials to widespread service delivery in places like Australia, North America, and Europe, which has prompted ethical questions by social scientists and bioethicists. Taking a broader view, we argue that the ethics of psychedelic therapy (...) concerns not simply how psychotherapies are different when paired with psychedelic drugs, but how psychedelic therapies shape and are shaped by different values, norms, and metaphysical commitments. Drawing from the published literature and interviews with seven psychedelic therapists working in clinical trials in the United States, Germany, Switzerland, and Australia, this article opens the black box of the treatments to consider the values and informal debates currently animating the therapies. Considering questions of patient autonomy, mechanisms of therapeutic action, and which therapies are best suited to pair with psychedelic substances, we examine the ethics of psychedelic therapy as an emergent form of life. To bring this form of life out in fuller relief, we conclude by comparing and contrasting it with ayahuasca use in Amazonian shamanism. (shrink)

The causal view of categories assumes that categories are represented by features and their causal relations. To study the effect of causal knowledge on categorization, researchers have used Bayesian causal models. Within that framework, categorization may be viewed as dependent on a likelihood computation (i.e., the likelihood of an exemplar with a certain combination of features, given the category's causal model) or as a posterior computation (i.e., the probability that the exemplar belongs to the category, given its features). Across three (...) experiments, in combination with computational modeling, we offer evidence that categorization is better accounted for by assuming that people compute posteriors and not likelihoods, though both probabilities are closely related. This result contrasts with existing analyses of causal-based categorization, which assume that likelihood computations give a good approximation of human judgments. We also find that people are able to compute likelihoods in a closely related task that elicits judgments of consistency rather than category membership judgments. Our analyses show that people do use causal probabilistic information as prescribed by a Bayesian model but that they flexibly compute likelihoods or posteriors depending on the task. We discuss our results in relation to the relevant literature on the topic. (shrink)

We may well be witnessing a decisive event in the history of knowledge as diversity is becoming one of the premier values of late modern societies. We seek to preserve and foster biodiversity, neurodiversity, racial diversity, ethnic diversity, gender diversity, linguistic diversity, cultural diversity, and perspectival diversity. Perspectival diversity has become the passage point through which other forms of diversity must pass to become epistemically consequential. This article examines how two of its varieties, viewpoint diversity and educational diversity, have come (...) to transform the moral economy of science. Both aim at multiplying perspectives on a given subject, but their political subtexts differ markedly. The valorization of educational diversity followed a US Supreme Court decision in 1978 that enabled universities to advance social justice, if they justified race-conscious admissions in terms of the pedagogic benefits of a more diverse student body for all. By contrast, the proponents of viewpoint diversity aim at the reform of scientific knowledge production and distribution rather than the reallocation of status and power among different social groups. We examine the political epistemology of viewpoint diversity by analyzing a controversy between social psychologists who, amid the American culture wars of the 2010s, debated how to rein in their political biases in a scientific field supposedly lacking political diversity. Out of this scientific controversy grew Heterodox Academy, an activist organization promoting viewpoint diversity in higher education. By relating and comparing viewpoint and educational diversity, we clarify what is at stake epistemically in the US-centric moral economy of diversity. (shrink)

Our discussion of the commentaries begins, at the evolutionary level, with issues raised by our account of the evolution of morality in terms of partner-choice mutualism. We then turn to the cognitive level and the characterization and workings of fairness. In a final section, we discuss the degree to which our fairness-based approach to morality extends to norms that are commonly considered moral even though they are distinct from fairness.

In order to describe the logic of morality, "contractualist" philosophers have studied how individuals behave when they choose to follow their moral intuitions. These individuals, contractualists note, often act as if they have bargained and thus reached an agreement with others about how to distribute the benefits and burdens of mutual cooperation. Using this observation, such philosophers argue that the purpose of morality is to maximize the benefits of human interaction. The resulting "contract" analogy is both insightful and puzzling. On (...) one hand, it captures the pattern of moral intuitions, thus answering questions about human cooperation: why do humans cooperate? Why should the distribution of benefits be proportionate to each person's contribution? Why should the punishment be proportionate to the crime? Why should the rights be proportionate to the duties? On the other hand, the analogy provides a mere as-if explanation for human cooperation, saying that cooperation is "as if" people have passed a contract-but since they didn't, why should it be so? To evolutionary thinkers, the puzzle of the missing contract is immediately reminiscent of the puzzle of the missing "designer" of life-forms, a puzzle that Darwin's theory of natural selection essentially resolved. Evolutionary and contractualist theory originally intersected at the work of philosophers John Rawls and David Gauthier, who argued that moral judgments are based on a sense of fairness that has been naturally selected. In this book, Nicolas Baumard further explores the theory that morality was originally an adaptation to the biological market of cooperation, an arena in which individuals competed to be selected for cooperative interactions. In this environment, Baumard suggests, the best strategy was to treat others with impartiality and to share the costs and benefits of cooperation in a fair way, so that those who offered less than others were left out of cooperation while those who offered more were exploited by their partners. It is with this evolutionary approach that Baumard ultimately accounts for the specific structure of human morality. (shrink)

This paper offers a framework for consciousness of internal reality. Recent PET experiments are reviewed, showing partial overlap of cortical activation during self-produced actions and actions observed from other people. This overlap suggests that representations for actions may be shared by several individuals, a situation which creates a potential problem for correctly attributing an action to its agent. The neural conditions for correct agency judgments are thus assigned a key role in self/other distinction and self-consciousness. A series of behavioral experiments (...) that demonstrate, in normal subjects, the poor monitoring of action-related signals and the difficulty in recognizing self-produced actions are described. In patients presenting delusions, this difficulty dramatically increases and actions become systematically misattributed. These results point to schizophrenia and related disorders as a paradigmatic alteration of a ''Who?'' system for self-consciousness. (shrink)

This article argues for a novel approach to the measurement of freedom of choice, on which the availability of an option is a matter of degree, rather than a bivalent matter of being either available or not. This approach is motivated by case studies involving weakness of will, where deficiencies in willpower seem to impair individual freedom by making certain alternatives much harder to pursue. This approach is perfectly general, however: its graded analysis of option availability can be extended to (...) cases where weakness of will is not involved and can be used to generalize numerous existing measures of freedom. (shrink)

How might a human communication system be bootstrapped in the absence of conventional language? We argue that motivated signs play an important role (i.e., signs that are linked to meaning by structural resemblance or by natural association). An experimental study is then reported in which participants try to communicate a range of pre-specified items to a partner using repeated non-linguistic vocalization, repeated gesture, or repeated non-linguistic vocalization plus gesture (but without using their existing language system). Gesture proved more effective (measured (...) by communication success) and more efficient (measured by the time taken to communicate) than non-linguistic vocalization across a range of item categories (emotion, object, and action). Combining gesture and vocalization did not improve performance beyond gesture alone. We experimentally demonstrate that gesture is a more effective means of bootstrapping a human communication system. We argue that gesture outperforms non-linguistic vocalization because it lends itself more naturally to the production of motivated signs. (shrink)

This paper compares two explanations of the process by which human communication systems evolve: iterated learning and social collaboration. It then reports an experiment testing the social collaboration account. Participants engaged in a graphical communication task either as a member of a community, where they interacted with seven different partners drawn from the same pool, or as a member of an isolated pair, where they interacted with the same partner across the same number of games. Participants’ horizontal, pair‐wise interactions led (...) “bottom up” to the creation of an effective and efficient shared sign system in the community condition. Furthermore, the community‐evolved sign systems were as effective and efficient as the local sign systems developed by isolated pairs. Finally, and as predicted by a social collaboration account, and not by an iterated learning account, interaction was critical to the creation of shared sign systems, with different isolated pairs establishing different local sign systems and different communities establishing different global sign systems. (shrink)

Artificial intelligence and robots may progressively take a more and more prominent place in our daily environment. Interestingly, in the study of how humans perceive these artificial entities, science has mainly taken an anthropocentric perspective (i.e., how distant from humans are these agents). Considering people’s fears and expectations from robots and artificial intelligence, they tend to be simultaneously afraid and allured to them, much as they would be to the conceptualisations related to the divine entities (e.g., gods). In two experiments, (...) we investigated the proximity of representation between artificial entities (i.e., artificial intelligence and robots), divine entities and natural entities (i.e., humans and other animals) at both an explicit (Study 1) and an implicit level (Study 2). In the first study, participants evaluated these entities explicitly on positive and negative attitudes. Hierarchical clustering analysis showed that participants’ representation of artificial intelligence, robots and divine entities were similar, while the representation of humans tended to be associated with that of animals. In the second study, participants carried out a word/non-word decision task including religious semantic-related words and neutral words after the presentation of a masked prime referring to divine entities, artificial entities and natural entities (or a control prime). Results showed that after divine and artificial entity primes, participants were faster to identify religious words as words compared to neutral words arguing for a semantic activation. We conclude that people make sense of the new entities by relying on already familiar entities and in the case of artificial intelligence and robots, people appear to draw parallels to divine entities. (shrink)

The claim that the observation of a violation of a Bell inequality leads to an alleged alternative between nonlocality and non-realism is annoying because of the vagueness of the second term.

Republican and so-called independence conceptions of freedom stand out from other conceptions by embedding strong modal conditions on what it takes for a person to count as being free to do something. For this reason, the extent of one’s freedom, conceived under republican/independentist lights, cannot be measured by any of the measures of freedom that have been developed so far in the literature on freedom, since these do not register the requisite modal constraints. In this paper I propose a measure (...) of freedom that does capture the requisite modal concerns. I do so by relying on work in the semantics of counterfactuals to define a measure of how modally robustly available an option is to an individual. (shrink)

Do we interpret in the same manner the expressions 'deux pommes' and 'deux pommes et demie'? Studying their English equivalents 'two apples' and 'two and a half apples', Liebesman (2015) has recently proposed that the interpretation of both expressions involves a form of measure, distinct from simple counting. I first present Liebesman’s arguments concerning English. Then I analyze the case of French. I defend the following theses: the interpretation of 'deux pommes' does use ordinary counting with natural numbers, while the (...) interpretation of 'deux pommes et demie' involves a form of ellipsis and, in some cases, a reinterpretation of the noun 'pomme'. (shrink)

Interest in the computational aspects of modeling has been steadily growing in philosophy of science. This paper aims to advance the discussion by articulating the way in which modeling and computational errors are related and by explaining the significance of error management strategies for the rational reconstruction of scientific practice. To this end, we first characterize the role and nature of modeling error in relation to a recipe for model construction known as Euler’s recipe. We then describe a general model (...) that allows us to assess the quality of numerical solutions in terms of measures of computational errors that are completely interpretable in terms of modeling error. Finally, we emphasize that this type of error analysis involves forms of perturbation analysis that go beyond the basic model-theoretical and statistical/probabilistic tools typically used to characterize the scientific method; this demands that we revise and complement our reconstructive toolbox in a way that can affect our normative image of science. (shrink)

I propose a cautionary assessment of the recent debate concerning the impact of the dynamical approach on philosophical accounts of scientific explanation in the cognitive sciences and, particularly, the cognitive neurosciences. I criticize the dominant mechanistic philosophy of explanation, pointing out a number of its negative consequences: In particular, that it doesn’t do justice to the field’s diversity and stage of development, and that it fosters misguided interpretations of dynamical models’ contribution. In order to support these arguments, I analyze a (...) case study in computational neuroethology and show why it should not be understood through a mechanistic lens; I specially focus on Zednik’s mechanistic interpretation of the case study. In addition, I argue for a greater appreciation of the relation between explanation and other epistemic goals in the field, as well as an increased sensitivity towards the associated contextual factors. (shrink)

Le but de cet article est de souligner la contribution de certaines des plus grandes figures de la scolastique tardive au débat sur la nature et les limites de la conscience. On verra comment les disciples Thomas d’Aquin introduisent un nouveau concept, celui d’ advertentia spécifiquement conçu pour caractériser l’accès cognitif privilégié que nous avons à nos propres actes mentaux. Les dominicains du XVI e siècle adoptent à ce titre une position très proche de celle de Descartes, du moins d’un (...) point de vue phénoménologique, en faisant de l’ advertentia le critère de la mens. (shrink)

In the past decade, experiments on altruistic punishment have played a central role in the study of the evolution of cooperation. By showing that people are ready to incur a cost to punish cheaters and that punishment help to stabilise cooperation, these experiments have greatly contributed to the rise of group selection theory. However, despite its experimental robustness, it is not clear whether altruistic punishment really exists. Here, I review the anthropological literature and show that hunter-gatherers rarely punish cheaters. Instead, (...) they avoid dealing with them and switch to other partners. I suggest that these data are better explained by individual selection, and in particular by partner choice models, in which individuals are in competition to be recruited by cooperative partners. I discuss two apparent problems for partner choice theories: large-scale cooperation and punishments in economic games. I suggest that rather than favouring group selection theory, these two phenomena provide evidence in favour of individual selection: (1) people produce large-scale cooperation through institutions in which punishment is not altruistic but rewarded on an individual basis; (2) punishment in experimental games can be explained without altruism and is indeed often better explained by individual interests. (shrink)

Discussions on indeterminism in physics focus on the possibility of an open future, i.e. the possibility of having potential alternative future events, the realisation of one of which is not fully determined by the present state of affairs. Yet, can indeterminism affect also the past, making it open as well? We show that by upholding principles of finiteness of information one can entail such a possibility. We provide a toy model that shows how the past could be fundamentally indeterminate, while (...) also explaining the intuitive (and observed) asymmetry between the past—which can be remembered, at least partially—and the future—which is impossible to fully predict. (shrink)

Las ideas filosóficas del ámbito de la actividad física suelen estar sustentadas en concepciones que trascienden la propia disciplina de estudio aludida, de modo que es importante estudiarlas en profundidad. Este ensayo tiene por objetivo comprender la interpretación de los términos movimiento humano y motricidad humana desde la mirada de tres corrientes filosóficas que han sido utilizadas por referentes de la actividad física, el deporte y la Educación Física. La primera corriente filosófica analizada es la de corte idealista, que entiende (...) el movimiento humano como un acto esencialmente mecánico y biológico. La segunda perspectiva filosófica es la materialista, que entiende el movimiento humano como una manifestación de la motricidad, la cual sería inmanente a la esencia del ser humano. Es decir, estaría dotada de intencionalidad. La tercera corriente sería una mirada ecléctica de las dos anteriores, asemejando el concepto de movimiento humano con el de las contemporáneas interpretaciones de motricidad. En otras palabras, el movimiento humano sería parte de la potencia y el acto. Se concluye que, según diferentes perspectivas filosóficas, es posible utilizar el concepto de movimiento y/o motricidad para trascender la mirada idealista o moderna del movimiento humano. (shrink)

It is commonly assumed that moral deliberation requires that the alternatives available in a choice situation are evaluatively comparable. This comparability assumption is threatened by claims of incomparability, which is often established by means of the small improvement argument (SIA). In this paper I argue that SIA does not establish incomparability in a stricter sense. The reason is that it fails to distinguish incomparability from a kind of evaluative indeterminacy which may arise due to the vagueness of the evaluative comparatives (...) ‘better than,’ ‘worse than,’ and ‘equally as good as.’. (shrink)

Punitive behaviours are often assumed to be the result of an instinct for punishment. This instinct would have evolved to punish wrongdoers and it would be the evidence that cooperation has evolved by group selection. Here, I propose an alternative theory according to which punishment is a not an adaptation and that there was no specific selective pressure to inflict costs on wrongdoers in the ancestral environment. In this theory, cooperation evolved through partner choice for mutual advantage. In the ancestral (...) environment, individuals were in competition to be recruited in cooperative ventures and it was vital to share the benefits of cooperation in a mutually advantageous manner. If individuals took a bigger share of the benefits, their partners would leave them for more interesting partners. If they took a smaller share, they would be exploited by their partners who would receive more than what they had contributed to produce. This competition led to the selection of a sense of fairness, a cognitive adaptation aiming to share equally the benefits of cooperation in order to attract partners. In this theory, punishment is not necessary for the evolution of cooperation. Punitive behaviours are only a way to restore fairness by compensating the victim or penalizing the culprit. Drawing on behavioural economics, legal anthropology, and cognitive psychology, I show that empirical data fit better with this framework than with the theory of group selection. When people punish, they do so to restore fairness rather than to help the group. (shrink)

In a 1993 paper, I argued that empirical treatments of the epistemologyused by scientists in experimental work are too abstract in practice tocounter relativist efforts to explain the outcome of scientificcontroversies by reference to sociological forces. This was because, atthe rarefied level at which the methodology of scientists is treated byphilosophers, multiple mutually inconsistent instantiations of theprinciples described by philosophers are employed by contestingscientists. These multiple construals change within a scientificcommunity over short time frames, and these different versions ofscientific methodology (...) can determine the outcome of a controversy. Iillustrated with a comparatively detailed analysis of the methodologyused by biologists debating the existence of an entity called thebacterial mesosome between the mid-1950s and the mid-1970s. This 1993piece has drawn several critiques in the philosophical literature. Inthis present piece I respond to these critiques and argue that they failto address the core argument of the original paper, and I reflectfurther on the methodologies of philosophers of science pursuingempirical or `naturalistic' epistemology. (shrink)

An innovative literary analysis of Freud's "Wolf Man.".

Cet article porte sur le déterminisme compatibiliste de Kazimierz Twardowski. Dans un premier temps, j’explique ce qu’est le déterminisme selon Twardowski et pourquoi il s’agit d’après lui d’une position plus probable que l’indéterminisme. Dans un deuxième temps, je présente son analyse du concept d’imputation [poczytywanie] – très proche de ce qu’on appelle en philosophie pénale la character theory of excuses – qui lui permet de concilier déterminisme et imputation. Cette analyse pose qu’un acte ne peut être imputé (à faute ou (...) à mérite) que s’il émane du caractère de l’agent. Dans un troisième temps, j’expose son analyse du concept de responsabilité. Dans un dernier temps, je montre que Twardowski penche vers l’incompatibilisme lorsqu’il est question du remords ou du sentiment de responsabilité, mais qu’il ne pense pas que cela doive nous conduire au scepticisme éthique. Cet article comporte en annexe une traduction d’une publication synthétique de Twardowski sur ce sujet. (shrink)

This article starts from a paradox and aims to solve it. On the one hand, although Drug Courts (DCs) are one of the most interesting penal innovations in recent years, running counter to the dominant retributive approach and the rival approach based on deterrence, they have surprisingly not attracted the attention of philosophers and therefore lack a solid philosophical foundation. On the other hand, although Pickard's ‘responsibility without blame’ approach looks very convincing on paper, its practical applications remain unclear outside (...) the clinical context. I argue that Pickard's approach is the theoretical framework that DCs need and that they are a compelling application of it: DCs do ascribe to participants various forms of responsibility (criminal ‘liability-responsibility’, responsibility of choice, responsibility for progress or failure, responsibility as answerability, tort liability) while striving to keep ‘affective blame’ at bay in order to help them regain their autonomy. However, I argue that some of the limitations of both this approach and DCs become apparent once we consider the ‘outer limits’ of DCs, in other words those who are terminated from DCs and those who refuse to enter DCs in the first place. (shrink)

This book advances a new interpretation of Hart's penal philosophy. Positioning itself in opposition to current interpretations, the book argues that Hart does not defend a mixed theory of punishment, nor a rule-utilitarian theory of punishment, nor a liberal form of utilitarianism, nor a goal and constraint approach. Rather, it is argued, his penal philosophy is based on his moral pluralism, which comprises two aspects: value pluralism and pluralism with respect to forms of moral reason. It is held that this (...) means, on the one hand, that criminal law has an irreducible complexity due to the compromises it makes to accommodate competing values, and on the other hand, that there need not be one single justification of punishment. This original interpretation is not based only on Hart's key volume on the subject Punishment and Responsibility, but on a careful reading of his complete works. The book will be a valuable resource for academics and researchers interested in Hart's philosophy, the philosophy of law and criminal law. (shrink)

In this paper I explore whether three different approaches to connexivity – namely, Lewis and Langford’s, Wansing’s and Egré and Politzer’s – can be non-trivially related. Lewis and Langford’s approach consists of the definition of the conditional in terms of consistency via the definition of possibility in terms of consistency and Lewis’ definition of the (strict) conditional in terms of possibility; Wansing’s approach is based on his definition of the falsity condition for the conditional as “if A is true then (...) B is false”; Egré and Politzer’s approach relies on the modalization of the falsity condition for the conditional in its conditional form (A→◇~B). With this background in mind, I build upon Estrada-González’s work relating connexivism and possibilism, the thesis according to which everything is possible. Estrada-González’s work relates Lewis and Langford’s connexive approach with Nelson’s idea that every proposition is self-consistent. He does so using a fragment of LP augmented with a special conditional. This relation has resulted in the study and postulation of several truth-functional modalities, some of which have already been discussed elsewhere. I employ several truth-functional modalities to evaluate Egré and Politzer’s falsity conditions for the conditional. I show that in using Béziau’s truth-functional modality ◇B, definable in Estrada-González’s framework, one can retain in a single framework the three different approaches. More specifically, distinguishing the notion of logical equivalence from the notion of interderivability and these two from the notion of coimplication, it is possible to relate ~(A→B) and (A→◇~B) as interderivable schemas and in a valid biconditional. I also show some consequences of this for Béziau’s negative appraisal of three-valued truthfunctional modalities. (shrink)

Dieu est Amour. Il est le Tout-Puissant, et l'homme, sa créature de prédilection, son enfant, se débat contre les forces du mal. Tel est le mystère! Le mal ne tourmente pas seulement la chair et le cœur de l'homme, il met en question sa confiance en Dieu et sa foi. Ce livre ne vise pas à donner à l'esprit une solution claire et suffisante, qui répondrait à ses questions. On ne résout pas un mystère. La tentation de se révolter contre (...) Dieu, à cause du mal qu'il permet, est fallacieuse, car la révolte n'a pas de sens en dehors de la Foi en ce Dieu qu'elle conteste; mais elle n'en a pas davantage à l'intérieur de cette Foi qui Le reconnaît comme infiniment bon et compatissant. Dieu est Amour et il est le Tout-Puissant : mais si son amour même introduisait au cœur de sa puissance une dimension de respect envers sa créature, qui se manifesterait en ce monde par une sorte d'impuissance? Si cette mystérieuse impuissance du Tout-Puissant était la condition nécessaire pour que l'Amour agisse en ce monde par la croix? Amère et incompréhensible ici-bas, la croix apparaîtra un jour comme elle est : instrument de victoire sur la mort, semence de vie et de joie dans la paix éternelle. C'est de cette « impuissance de Dieu » au sein de sa Toute-Puissance et au service de son Amour que l'auteur a osé traiter. (shrink)

Whether on the theoretical level or by analyzing specific cases, this collection examines the different ways of experiencing and dealing with precarity. Its goal is to elucidate the uses of rhetoric so as to grasp to what extent the "minus" may (sometimes) represent a "plus".

1. L'oeuvre musicale et son écoute -- 2. Le monde-musique et son solfège -- 3. Le musicien et son intellectualité musicale -- 4. Les raisonances du monde-musique ; postlude d'Alain Badiou.

En cette entame du troisième millénaire, la musique adresse une question aux autres arts comme aux sciences : comment ajuster les différentes écritures (musicale, mathématique, chorégraphique, biologique...) aux nouvelles matières sur lesquelles ces pensées embrayent? S'il est vrai que le système autonome d'écriture musicale (le solfège), inventé il y a près de 1 000 ans, s'avère désormais en partie inadapté aux nouveaux matériaux sonores qu'il s'agit de composer, la prolifération empirique des simples notations à laquelle on assiste aujourd'hui ne saurait (...) pourvoir aux mutations en jeu : en matière d'écriture musicale, il en va non de simples techniques neutres mais bien de logique musicale, donc de ce qu'un discours ou un développement veulent musicalement dire. S'il s'agit donc en cette affaire de penser les mutations en cours en matière de "logique musicale" et leurs exigences en matière de nouvelles "lettres/notes" musicales, qu'en est-il de soucis semblables dans les autres arts et dans les sciences? Qu'en est-il de mutations équivalentes dans les autres arts, singulièrement dans ceux qui entreprennent de se doter d'une écriture qui leur soit propre (la chorégraphie)? Qu'en est-il surtout dans les sciences, dans les mathématiques bien sûr mais aussi en logique comme dans les sciences ayant à nouer leurs propres lettres à l'impératif galiléen de s'écrire mathématiquement? Comment ce double dispositif (écriture mathématique importée/modes endogènes d'inscription) tend-il aujourd'hui à se nouer en physique, en chimie, en biologie, en informatique? Ce volume rassemble différentes contributions soutenues et discutées lors d'un colloque tenu à l'Ecole normale supérieure (Paris, Ulm) en octobre 2007. (shrink)