This article presents the Arabic text of al-Q's short geometric treatise, The Book of the centres of the tangent circles on lines, by the method of analysis, with translation and a mathematical commentary. In this treatise al-Q solves by analysis an ordered set of eight problems where the goal is to locate, on a given line, the centre of a circle which is tangent to two given elements, which may be points, straight lines or circles. For example, in the first (...) problem he wanted to find the centre of a circle which contains two given points. In fact, al-Q establishes the locus of the solutions, and this locus can be a straight line or a conic. The treatise is reminiscent of one of the purposes of al-Q's work on the perfect compass, namely to assign to the conics the status of regular lines. (shrink)

RésuméDans son traité intituléLe Planisphère, Ptolémée présente une méthode pour représenter une sphère sur un plan, selon des principes compatibles avec ce qu'on nomme aujourd'hui la projection stéréographique. Mais cette dernière ne sera traitée mathématiquement, en tant que telle, que bien plus tard, au IXẹsiècle, dans l'œuvre d'al-Farghānī qui démontrera notamment la propriété fondamentale de cette projection. Ce n'est qu'au Xesiècle qu'al-Qūhī et Ibn Sahl écriront une première théorie générale des projections de la sphère. Cet article analyse les raisons qui (...) permettent d'affirmer que Ptolémée n'a pas conçu mathématiquement de projection, et que cette conception n'a pu être possible qu'avec l'aide de la définition de la surface conique telle qu'Apollonius l'a exposée dans sesConiques. (shrink)

Many studies on the astrolabe were written during the period from the ninth to the eleventh century, but very few of them related to projection, i.e., to the geometrical transformation underlying the design of the instrument. Among those that did, the treatise entitled The Art of the Astrolabe, written in the tenth century by Abū Sahl al-Qūhī, represents a particulary important phase in the history of geometry. This work recently appeared in a critical edition with translation and commentary by Roshdi (...) Rashed. It contains the earliest known theory of the projection of the sphere, a theory developed in a commentary written by a contemporary mathematician, Ibn Sahl. Following R. Rashed, the present article offers here a thorough mathematical analysis of al-Qūhī's treatise and of the commentary by Ibn Sahl. It also presents, with commentary, an account of a contemporary treatise on the projection of the sphere, written by al-[Sdotu]āġānī. The latter work is concerned with the conical projection of a sphere on a plane, from a point on an axis of the sphere, other than its pole. The author consciously avoids the case of stereographic projection, but he studies all the other cases of conical projection which, if we employ the terms of al-Qūhī's theory, are compatible with the movement of the instrument. These three texts provide clear evidence of the emergence, during the second half of the tenth century, of a new field of study, that of projective geometry. (shrink)

According to one productive and influential approach to cognition, categorization, object recognition, and higher level cognitive processes operate on a set of fixed features, which are the output of lower level perceptual processes. In many situations, however, it is the higher level cognitive process being executed that influences the lower level features that are created. Rather than viewing the repertoire of features as being fixed by low-level processes, we present a theory in which people create features to subserve the representation (...) and categorization of objects. Two types of category learning should be distinguished. Fixed space category learning occurs when new categorizations are representable with the available feature set. Flexible space category learning occurs when new categorizations cannot be represented with the features available. Whether fixed or flexible, learning depends on the featural contrasts and similarities between the new category to be represented and the individual's existing concepts. Fixed feature approaches face one of two problems with tasks that call for new features: If the fixed features are fairly high level and directly useful for categorization, then they will not be flexible enough to represent all objects that might be relevant for a new task. If the fixed features are small, subsymbolic fragments (such as pixels), then regularities at the level of the functional features required to accomplish categorizations will not be captured by these primitives. We present evidence of flexible perceptual changes arising from category learning and theoretical arguments for the importance of this flexibility. We describe conditions that promote feature creation and argue against interpreting them in terms of fixed features. Finally, we discuss the implications of functional features for object categorization, conceptual development, chunking, constructive induction, and formal models of dimensionality reduction. Key Words: concept learning; conceptual development; features; perceptual learning; stimulus encoding. (shrink)

: In the 1980s, the analysis of presupposition projection contributed to a ‘dynamic turn’ in semantics: the classical notion of meanings as truth conditions was replaced with a dynamic notion of meanings as Context Change Potentials. We argue that this move was misguided, and we offer an alternative in which presupposition projection follows from the combination of a fully classical semantics and a new pragmatic principle, which we call Be Articulate. This principle requires that a meaning pp’ conceptualized as involving (...) a pre-condition p should be articulated as … … rather than as … pp’ …, unless the full conjunction is ruled out because the first or the second conjunct is semantically idle. In particular, … … is infelicitous - and hence … pp’ … is acceptable - if one can determine as soon as p and is uttered that no matter how the sentence ends these words could be eliminated without affecting its contextual meaning. An equivalence theorem guarantees that this condition suffices to derive Heim’s results in almost all cases. Extensions of the condition lead to several new predictions, in particular concerning some ‘symmetric readings’, as well as presupposition projection in quantified structures, which displays a complex interaction between the nature of the trigger and the monotonicity of the quantifier. (shrink)

Kaplan claims in Demonstratives that no operator may manipulate the context of evaluation of natural language indexicals. We show that this is not so. In fact, attitude reports always manipulate a context parameter (or, rather, a context variable). This is shown by (i) the existence of De Se readings of attitude reports in English (which Kaplan has no account for), and (ii) the existence of a variety of indexicals across languages whose point of evaluation can be shifted, but only in (...) attitude reports. We develop an alternative account within an extensional framework with overt quantification over times, worlds and contexts. Various typological facts are discussed, esp. the distinction between English, Amharic and Ewe pronouns, and that between English and Russian tenses. (shrink)

As part of a recent attempt to extend the methods of formal semantics beyond language, it has been claimed that music has an abstract truth-conditional semantics, albeit one that has more in common with iconic semantics than with standard compositional semantics. After summarizing this approach and addressing a common objection, we argue that music semantics should be enriched in three directions by incorporating insights of other areas of Super Semantics. First, it has been claimed by Abusch 2013 that visual narratives (...) make use of discourse referents akin to those we find in language. We argue that a similar conclusion extends to music, and we highlight it by investigating ways in which orchestration and dance may make cross-referential dependencies more explicit. Second, we show that by bringing music semantics closer to the semantics of visual narratives, we can give an account of the semantics of mixed visual and musical sequences. Third, it has been claimed that co-speech gestures trigger characteristic conditionalized presuppositions, called ‘cosuppositions’, and that their semantic status derives from their parasitic character relative to words. We argue that the same conclusion extends to some instances of film and cartoon music: it may trigger cosuppositions that can be revealed by embedding film excerpts or gifs in sentences so as to test presupposition projection. We further argue that under special discourse conditions, pro-speech gestures and pro-speech music alike can trigger cosuppositions as well. These results suggest that new insights can be gained not just by extending the methods of semantics to new objects, but also by drawing new connections among them. (shrink)

We argue that a formal semantics for music can be developed, although it will be based on very different principles from linguistic semantics and will yield less precise inferences. Our framework has the following tenets: Music cognition is continuous with normal auditory cognition. In both cases, the semantic content derived from an auditory percept can be identified with the set of inferences it licenses on its causal sources, analyzed in appropriately abstract ways. What is special about music semantics is that (...) it aggregates inferences based on normal auditory cognition with further inferences drawn on the basis of the behavior of voices in tonal pitch space. This makes it possible to define an inferential semantics but also a truth-conditional semantics for music. In particular, a voice undergoing a musical movement m is true of an object undergoing a series of events e just in case there is a certain structure-preserving map between m and e. Aspects of musical syntax might be derivable on semantic grounds from an event mereology, which also explains some cases in which tree structures are inadequate for music. Intentions and emotions may be attributed at several levels, and we speculate on possible explanations of the special relation between music and emotions. (shrink)

Potts (2005, 2007) has argued that expressives such as honky must be analyzed using an entirely new dimension of meaning. We explore a more conservative theory in which expressives are presuppositional expressions [Macià 2002] that are indexical and attitudinal (and sometimes shiftable): they predicate something of the mental state of the agent of the context (and this need not always be the agent of the actual context). Following Stalnaker’s recent work on informative presuppositions (2002), we argue that the presuppositions triggered (...) by expressives are automatically satisfied (= ’self-fulfilling’), hence the impression that they are not standard presupposition triggers. (shrink)

We develop a formal semantic analysis of the alarm calls used by Campbell’s monkeys in the Tai forest and on Tiwai island —two sites that differ in the main predators that the monkeys are exposed to. Building on data discussed in Ouattara et al. :e7808, 2009a; PNAS 106: 22026–22031, 2009b and Arnold et al., we argue that on both sites alarm calls include the roots krak and hok, which can optionally be affixed with -oo, a kind of attenuating suffix; in (...) addition, sentences can start with boom boom, which indicates that the context is not one of predation. In line with Arnold et al., we show that the meaning of the roots is not quite the same in Tai and on Tiwai: krak often functions as a leopard alarm call in Tai, but as a general alarm call on Tiwai. We develop models based on a compositional semantics in which concatenation is interpreted as conjunction, roots have lexical meanings, -oo is an attenuating suffix, and an all-purpose alarm parameter is raised with each individual call. The first model accounts for the difference between Tai and Tiwai by way of different lexical entries for krak. The second model gives the same underspecified entry to krak in both locations, but it makes use of a competition mechanism akin to scalar implicatures. In Tai, strengthening yields a meaning equivalent to non-aerial dangerous predator and turns out to single out leopards. On Tiwai, strengthening yields a nearly contradictory meaning due to the absence of ground predators, and only the unstrengthened meaning is used. (shrink)

The paper develops an objection to the extensional model of time consciousness—the view that temporally extended events or processes, and their temporal properties, can be directly perceived as such. Importantly, following James, advocates of the extensional model typically insist that whole experiences of temporal relations between non-simultaneous events are distinct from mere successions of their temporal parts. This means, presumably, that there ought to be some feature(s) differentiating the former from the latter. I try to show why the extensional models (...) offers no credible ground for positing such a difference. (shrink)

There are two main approaches to the problem of donkey anaphora (e.g. If John owns a donkey , he beats it ). Proponents of dynamic approaches take the pronoun to be a logical variable, but they revise the semantics of quantifiers so as to allow them to bind variables that are not within their syntactic scope. Older dynamic approaches took this measure to apply solely to existential quantifiers; recent dynamic approaches have extended it to all quantifiers. By contrast, proponents of (...) E-type analyses take the pronoun to have the semantics of a definite description (with it ≈ the donkey, or the donkey that John owns ). While competing accounts make very different claims about the patterns of coindexation that are found in the syntax, these are not morphologically realized in spoken languages. But they are in sign language, namely through locus assignment and pointing. We make two main claims on the basis of ASL and LSF data. First, sign language data favor dynamic over E-type theories: in those cases in which the two approaches make conflicting predictions about possible patterns of coindexation, dynamic analyses are at an advantage. Second, among dynamic theories, sign language data favor recent ones because the very same formal mechanism is used irrespective of the indefinite or non-indefinite nature of the antecedent. Going beyond this debate, we argue that dynamic theories should allow pronouns to be bound across negative expressions, as long as the pronoun is presupposed to have a non-empty denotation. Finally, an appendix displays and explains subtle differences between overt sign language pronouns and all other pronouns in examples involving ‘disjunctive antecedents’, and suggests that counterparts of sign language loci might be found in spoken language. (shrink)

We want to highlight the strong link between learning systems such as deep learning neural networks and neutrosophy. The latter is above all a representation considering a neutral state which is at the heart of many phenomena of reality as well as mathematical and information theories. Here, we start from the recent understanding of neural networks, which considers their internal functioning and the learning that characterizes them as based on adapted representations (both of the information to be processed and of (...) the task to be performed) that are in fact optimal compressions. Compression means discriminating the similar and the different between cases by identifying representative characteristics through focusing on the most significant and rejecting of the rest. These three operations of neural processing, learning and compression owe their existence to non-linear treatments which essentially amount to distinguishing a neutral zone between two filtered zones, corresponding to the neutrosophical approach. (shrink)

A full understanding of emotions and emotion characteristics can only be reached when their dynamic nature is taken into account. As such, a primary objective of the present study is to describe and account for variability in temporal profiles of experienced emotional intensity. Participants were asked to make detailed drawings of intensity profiles of recently experienced episodes of anger, sadness, joy and affection. Functional data analysis revealed three features that together accounted for 84% of the total variability: (i) steepness at (...) onset; (ii) skewness; and (iii) the number of peaks. Emotions differed with regard to the first two features, with the rise at onset being steeper for sadness and joy and affection being the most negatively skewed emotion under study. Individual differences regarding each of the three features were found, however, they did not strongly generalise across emotions. (shrink)

Au Sud-Est du Cynthe, dans un paysage où prédomine le granit, on remarque une lentille de marbre blanc légèrement bleuâtre sur laquelle on peut observer les nombreuses marques d'une exploitation dans l'Antiquité. Les trois secteurs qui constituent cette carrière révèlent les traces du travail des carriers ; leur examen permet d'établir quelques hypothèses sur le fonctionnement de l'installation depuis les travaux préparatoires nécessaires à l'extraction jusqu'au levage et à l'embarquement des blocs prélevés pour leur transport par mer. L'utilisation de ce (...) marbre pour la construction de certains édifices déliens nous aide à préciser les dates de l'exploitation et permet de conclure que la carrière, dont le rendement semble avoir été faible, a connu une activité sporadique entre la première moitié du vie s. et la fin du IVe S. (shrink)

In several sign languages, plurals can be realized with unpunctuated or punctuated repetitions of a noun, with different semantic implications; similar repetition-based plurals have been described in some homesigns and silent gestures. Unpunctuated repetitions often get approximate ‘at least’ readings while punctuated repetitions typically correspond to ‘exactly’ readings. The prevalence of these mechanisms could be thought to be a case in which Universal Grammar does not just specify the abstract properties of grammatical elements, but also their phonological realization, at least (...) in the visual modality. We explore an alternative in which punctuated and unpunctuated repetitions arise from general properties of iconic representations. On an empirical level, we argue that in ASL, punctuated and unpunctuated repetitions are unlikely to be an exclusively grammatical mechanism, as they can be found with purely iconic representations. On a theoretical level, we argue for a modular account with three components. First, repetition-based plurals can create a simplified pictorial representation. Second, unpunctuated repetitions give rise to pictorial vagueness, resolved by way of quantification over precisifications. Third, a pragmatic process involving strategic reasoning maps these vague representations onto a set of candidate linguistic meanings, including some ‘at least’ plural readings that are best expressed by unpunctuated repetitions. (shrink)

Self-awareness is viewed here as the phenotypic expression of an interaction between genes and the environment. Brain and behavioral development of fetuses and newborn infants are a rich source of information regarding what might constitute minimal self-awareness. Research indicates that newborns have feeling experience. Unlike automata, they do not just sense and respond to proximal stimulations. In light of the explosive brain growth that takes place inside and outside of the womb, first signs of feeling as opposed to sensing experience (...) are discussed. Feeling experience is considered as the necessary condition for having minimal self-awareness. Both would co-emerge in development. However, minimal self-awareness is rapidly supplemented with an awareness that is not just perceptual, but also conceptual and ethical, primarily defined in relation to and by others. (shrink)

Dans cet article, on montre que l’hypothèse de la « matière pensante » introduite spéculativement dans le livre IV de l’Essai sur l’Entendement humain, n’est pas seulement l’instrument d’une critique épistémologique destinée à souligner les limitations de notre connaissance, elle est aussi révélatrice des inclinations métaphysiques réelles de Locke. S’il est impossible de s’assurer par la connaissance de la nature de la substance pensante, il est permis néanmoins d’entretenir à son égard une opinion fondée sur des arguments probables. La croyance (...) est en effet aux yeux de Locke un champ d’exercice légitime de la rationalité, un champ qu’il sera particulièrement nécessaire de cultiver lorsque la connaissance manquera et qu’il s’agira de se déterminer sur des questions cruciales – au nombre desquelles il faut compter assurément celle de la substance et de la destination de l’âme. On examine ici les textes et les arguments qui ont conduit la plupart des interprètes de Locke à lui prêter une croyance « dualiste » de type cartésien, favorisant l’opinion de l’immatérialité de l’esprit humain. On montre que ces textes et ces arguments non seulement ne sont pas concluants mais peuvent même être mis au service de la thèse adverse. Que Locke ait cru en la probable matérialité de l’âme humaine est d'autant plus plausible que les arguments donnés dans la troisième lettre à Stillingfleet en faveur de la concevabilité de l'hypothèse, fonctionnent aussi tacitement comme des arguments de probabilité : l'hypothèse ne contredit pas le message scripturaire, elle permet une meilleure conception de l'analogie générale du vivant, elle est mieux conforme aux requisits ontologiques de l'existence et de l'identité. (shrink)

Walter Benjamin (1892-1940) à travers son itinéraire semé d'embûches, a dû affronter l'arrivée au pouvoir des nazis. Amené à sillonner l'Europe il développe une activité de critique littéraire et une philosophie de l'histoire, notamment dans ses ultimes « thèses » de 1940. Ce testament philosophique est influencé par le messianisme juif et le marxisme. Décrit comme sentinelle messianique, l'œuvre de Walter Benjamin se déploie aux confins de la sociologie, de l'esthétique et de la théologie. Sa philosophie de l'histoire contraste avec (...) celle de Nietzsche, mais le rapproche de Simone Weil. Analyste privilégié des tourments de l'Europe, il participera indirectement à l'Ecole de Francfort. (shrink)

The social sciences underwent rapid development in postwar America. Problems once framed in social terms gradually became redefined as individual with regards to scope and remedy, with economics and psychology winning influence over the other social sciences. By the 1970s, both economics and psychology had spread their intellectual remits wide: psychology's concepts suffused everyday language, while economists entered a myriad of policy debates. Psychology and economics contributed to, and benefited from, a conception of society that was increasingly skeptical of social (...) explanations and interventions. Sociology, in particular, lost intellectual and policy ground to its peers, even regarding 'social problems' that the discipline long considered its settled domain. The book's ten chapters explore this shift, each refracted through a single 'problem': the family, crime, urban concerns, education, discrimination, poverty, addiction, war, and mental health, examining the effects an increasingly individualized lens has had on the way we see these problems. (shrink)

Van Heijenoort's main contribution to history and philosophy of modern logic was his distinction between two basic views of logic, first, the absolutist, or universalist, view of the founding fathers, Frege, Peano, and Russell, which dominated the first, classical period of history of modern logic, and, second, the relativist, or model-theoretic, view, inherited from Boole, Schröder, and Löwenheim, which has dominated the second, contemporary period of that history. In my paper, I present the man Jean van Heijenoort (Sect. 1); then (...) I describe his way of arguing for the second view (Sect. 2); and finally I come down in favor of the first view (Sect. 3). There, I specify the version of universalism for which I am prepared to argue (Sect. 3, introduction). Choosing ZFC to play the part of universal, logical (in a nowadays forgotten sense) system, I show, through an example, how the usual model theory can be naturally given its proper place, from the universalist point of view, in the logical framework of ZFC; I outline another, not rival but complementary, semantics for admissible extensions of ZFC in the very same logical framework; I propose a way to get universalism out of the predicaments in which universalists themselves believed it to be (Sect. 3.1). Thus, if universalists of the classical period did not, in fact, construct these semantics, it was not that their universalism forbade them, in principle, to do so. The historical defeat of universalism was not technical in character. Neither was it philosophical. Indeed, it was hardly more than the victory of technicism over the very possibility of a philosophical dispute (Sect. 3.2). (shrink)

In this chapter I consider Newton’s use of the Baconian label experimentum crucis in his famous 1672 paper on Light and Colors. I take it to be a sort of ‘signpost’, or methodological clue, which, properly understood, can help us to assess the kind of ‘empiricist’ commitment that may be ascribed to Newton. In order to dispel persistent misunderstandings, the first part of the chapter shows how our present understanding of crucial experiments has been shaped by nineteenth-century philosophers of science, (...) as part of a characteristically anti-Baconian methodology. It also shed light on the particularly ambiguous character of Newton’s methodological legacy. In the remaining parts of the paper, muting these retrospective overtones, I show what crucial instances, or crucial experiments, really meant for Bacon, and for his heirs, in order to elucidate Newton’s usage in the light of its actual context. I argue that the crucial experiment in Newton’s 1672 paper is not devised to arbitrate between competing full-blown and empirically grounded theories, but rather to make the abstract structure of a new, and still unclear, phenomenon entirely transparent. It functions as a ‘perceptual’ index rather than a judgmental criterion. Finally, I explain why the expression has been dropped in the published text of the 1704 Opticks. The ‘exhibiting’ function of the experimentum crucis is now taken over by a long and complex pattern of experiments. It is the whole complex composition of these optical experiments that is now ‘crucially’ exhibiting the abstract structure of refraction. (shrink)

L’objet de cet article est d’examiner la lecture par Henri More de la Dioptrique de Descartes et particulièrement des éléments qui relèvent de la théorie de la vision, dans ses dimensions physiques, physiologiques, et psychologiques. More prend son point de départ dans ce qui semble être une apparente adhésion au cadre général de la « mécanisation du regard » cartésienne. Néanmoins dans cette structure cartésienne, More parvient à reverser de larges pans du savoir ancien de la vision et à subvertir (...) entièrement le programme cartésien d’une réduction mécaniste du processus sensoriel et d’une déprise du réalisme « sensualiste » aristotélicien. Le fond du phénomène visuel apparaît désormais dans sa vérité : dans la vision, et plus précisément à la surface interne de l’œil, là ou se dépeignent les images rétiniennes, s’opère une sorte de confluence entre l’esprit du monde et l’esprit du voyant : un acte commun du sensible et du sentant en quelque sorte, si on peut ici s’autoriser de l’espèce de syncrétisme platonico-aristotélicien qui caractérise la théorie de la vision que More, qui n’a gardé que les oripeaux de la doctrine cartésienne, entend faire couler dans cette enveloppe vide. (shrink)

John Locke’ famous Essay is often regarded as a work in epistemology, determining the limits and scope of knowledge. By contrast, this chapter aims to revive the Enlightenment view of Locke as an experimental philosopher and natural historian who developed an experimental natural philosophy of human understanding. Through an analysis of Locke’s experimental ‘ethos’, and in particular his emphasis on autoptic experience, Hamou argues that Locke’s approach to natural philosophy in the Essay is both a subtle critique of the optimism (...) of some of the fellows of the early Royal Society and the key to explaining his own reluctance to pursue physical inquiries of the mind. (shrink)

Note introductive au numéro thématique de ERRS 2020 11 1.

Cet article montre comment Ricœur a constitué une théorie de la causalité adaptée à sa philosophie pratique. D’abord, on étudie la définition alternative (« non-humienne ») de la causalité qu’élabore Ricœur pour les sciences historiques, caractérisée par la conditionnalité, la processualité et la singularité. Ensuite, on souligne l’effort de justification objective de cette nouvelle catégorie causale par une démarche logico-transcendantale, qui lie les conditions de possibilité d’une connaissance objective de l’action non pas à une subjectivité fondatrice, mais à des dimensions (...) (sémantique, pragmatique, narrative) du discours. D’un point de vue épistémologique, la causalité fait l’objet d’un jugement d’imputation singulier, qui joue un rôle intermédiaire entre l’explication structurale (ou « nomologique ») et l’explication narrative. D’un point de vue métaphysique, elle permet d’établir un gradient d’abstraction dans l’événementialité, puisqu’elle sert tout particulièrement à expliquer non pas des événement génériques ou virtuels, mais singuliers et propres, qui sont, de ce fait, inscrits dans un contexte riche ; elle dessine ainsi la forme d’un monde d’événements non impersonnels et non atomiques. (shrink)

Since its origin in the early 20th century, the modern synthesis theory of evolution has grown to represent the orthodox view on the process of organic evolution. It is a powerful and successful theory. Its defining features include the prominence it accords to genes in the explanation of development and inheritance, and the role of natural selection as the cause of adaptation. Since the advent of the 21st century, however, the modern synthesis has been subject to repeated and sustained challenges. (...) In the last two decades, evolutionary biology has witnessed unprecedented growth in the understanding of those processes that underwrite the development of organisms and the inheritance of characters. The empirical advances usher in challenges to the conceptual foundations of evolutionary theory. Many current commentators charge that the new biology of the 21st century calls for a revision, extension, or wholesale rejection of the modern synthesis theory of evolution. Defenders of the modern synthesis maintain that the theory can accommodate the exciting new advances in biology, without forfeiting its central precepts. The original essays collected in this volume—by evolutionary biologists, philosophers of science, and historians of biology—survey and assess the various challenges to the modern synthesis arising from the new biology of the 21st century. Taken together, the essays cover a spectrum of views, from those that contend that the modern synthesis can rise to the challenges of the new biology, with little or no revision required, to those that call for the abandonment of the modern synthesis. (shrink)

Ecology in principle is tied to evolution, since communities and ecosystems result from evolution and ecological conditions determine fitness values. Yet the two disciplines of evolution and ecology were not unified in the twentieth-century. The architects of the Modern Synthesis, and especially Julian Huxley, constantly pushed for such integration, but the major ideas of the Synthesis—namely, the privileged role of selection and the key role of gene frequencies in evolution—did not directly or immediately translate into ecological science. In this paper (...) I consider five stages through which the Synthesis was integrated into ecology and distinguish between various ways in which a possible integration was gained. I start with Elton’s animal ecology, then consider successively Ford’s ecological genetics in the 1940s, the major textbook Principles of animal ecology edited by Allee et al., and the debates over the role of competition in population regulation in the 1950s, ending with Hutchinson’s niche concept and McArthur and Wilson’s Principles of Island Biogeography viewed as a formal transposition of Modern Synthesis explanatory schemes. I will emphasize the key role of founders of the Synthesis at each stage of this very nonlinear history. (shrink)

This book is a collection of current theoretical views and research on the self in early infancy, prior to self-identification and the well-documented emergence ...

Conceptualists have it that the representational content of perceptual experience is determined by the concepts a subject applies in having such an experience. Conceptualists like Bill Brewer [1999] and John McDowell [1994] have laid particular emphasis on demonstrative concepts in trying to account for the fact that subjects can perceive and discriminate very many specific shades of colour in experience. Against this, it has been objected that such demonstrative concepts have incoherent conditions of extension and/or of individuation, due to the (...) fact that chromatic indiscriminability is non-transitive. In this paper, I consider three different versions of this objection and show why each fails. (shrink)

Musical performance requires the ability to master a complex integration of highly specialized motor, cognitive and perceptual skills developed over years of practice. It often means also being able to deal with a large amount of pressure within dynamic environments. Consequently, many musicians suffer from health-related problems and have a large number of physical and psychological complaints. Research has shown that making music can present challenges for musicians’ wellbeing. Therefore, our research aims to evaluate and analyze the wellbeing of two (...) distinct groups of respondents, college music students compared with amateur musicians in the French-speaking part of Switzerland, this second group serving as our comparison group. This article presents the results of a sample of 126 musicians (mean age ± SD = 22.4 ± 4.5 years, 71 male). The wellbeing was assessed through the World Health Organization Quality of Life-BREF questionnaire evaluating two general measures, Quality of Life and General health, and four specific dimensions, Physical health, Psychological health, Social relationships and Environment. The respondents’ Quality of Life was high on each measure: median scores were higher than 4 for the first two measures and higher than 70 for the four specific dimensions. Among the dimensions, respondents had the highest mean score for Social relationships and Physical health (74.0 and 73.8, respectively) and, finally, on Psychological health (70.3). Our overview of musicians’ wellbeing in Western Switzerland underlines the importance of helping musicians to be aware of their health in order to take care of themselves. This research offers an important insight into musicians’ health and point out the importance of involving different actors (teachers, administrators or support staff) to promote their wellbeing and empower musicians. (shrink)

The Powers of the Sacred is an opportunity for Hans Joas to return to the dynamogenic character of religion highlighted by William James and Émile Durkheim, in order to propose a reflection on the process of sacralisation of values. The present contribution enters into a pragmatist dialogue with Joas’s proposals, based on investigations carried out in an evangelical context. The aim is to show how certain spiritual practices encouraged on the horizon of collective celebrations participate in the creation of values (...) configured by religious entrepreneurs anxious to capture the religious energy of the faithful for the benefit of conservative political mobilizations. These empirical cases shed new light on the notion of the sacred proposed by Joas, and allow us to identify certain methodological knots, notably in the relationship between Joasian concepts and the notions through which social actors confer meaning on their individual or collective experiences. (shrink)

Recently some philosophers have emphasized a potentially irreconcilable conceptual antagonism between the statistical characterization of natural selection and the standard scientific discussion of natural selection in terms of forces and causes. Other philosophers have developed an account of the causal character of selectionist statements represented in terms of counterfactuals. I examine the compatibility between such statisticalism and counterfactually based causal accounts of natural selection by distinguishing two distinct statisticalist claims: firstly the suggested impossibility for natural selection to be a cause (...) acting upon populations and secondly the conceptualization that all evolutionary causes occur at the level of interactions between individual organisms. I argue that deriving the latter from the former involves supplementary assumptions concerning precisely what causation is. I critically examine two of these assumptions purportedly preventing natural selection being regarded as a cause: the locality claim and the modularity claim. I conclude that justifying the strongest version of statisticalism—i.e. evolutionary causation only occurs at the level of individual interactions between organisms—would require further metaphysical arguments that are likely to be deemed highly problematic. Additionally, I argue that such a metaphysical position would be considered incongruous with both our scientific and ordinary use of the concepts of causality and explanation as employed within our everyday epistemological framework. (shrink)

The role of state services in a market economy has been lately at the care of an intellectual and political debate in Belgium as well as in most European countries. State companies as the Post Office, the Railways and the Telegraph Service have to face an ever more fierce competition and have to be efficient and profitable.The way to deal with privatisation bas however been much less clearcut in Belgium than in other countries such as the United Kingdom or France. (...) A law bas been passed recently and the monopoly position of the Transport and Telecommunications state companies has been alleviated and their autonomy increased as a result. A distinction has been made between, on the one hand, the commercial activities for which they have to compete with the private sector and, on the other hand, the activities of public interest which are subject to certain limitations laid down in a management contract. (shrink)

Jusqu’au récent référendum sur le projet de Constitution européenne, la nature des rapports entre les Français et l’Europe ne semblait plus guère poser de problèmes auprès de la plupart des commentateurs : malgré la persistance de sentiments anti-européens dans certains secteurs minoritaires de l’opinion, il n’était pas douteux que..

L’objectif de cet article est de laisser entrevoir pourquoi et comment il est possible de faire pivoter une approche esthétique fondée sur des idées vers une autre fondée sur des gestes. Mon point de pivotement sera ce que Kant affirme et présuppose de l’idée esthétique et du geste (dont il ne parle que brièvement et latéralement). Il ne s’agira donc pas d’exposer l’esthétique kantienne mais plutôt faire ressortir pourquoi cette dernière ne peut donner une pleine existence au geste et ce (...) qu’o... (shrink)

A partir d’une présentation de Sois mon corps, cet article se propose de mettre en lumière quelques prolongements contemporains de la dialectique hégélienne du maître et de l’esclave. Avec l’interprétation qu’en propose J. Butler notamment, c’est le statut du corps qui devient problématique dès lors que le désir de s’en détacher entre en tension avec une ontologie relationnelle et sociale de la vie corporelle qui signe la vulnérabilité de l’être vivant.