The idea of objectivity is primary in Gottlob Frege’s thought, not only for his conception of logic and mathematics, but also for his philosophy as a whole. He deals with the topic for the first time in 1884, in Grundlagen der Arithmetik, precisely in paragraph 26. He distinguishes the objective from the subjective, of course, but also from the real, what he calls the actual (wirklich in German). In order to be perfectly understood, he gives as example the colors but, (...) above all, to explain what is objective in geometry and space, he proceeds to a «thought-experiment», founded on the principle of duality. It is this aspect that I emphasize here, in the general framework ofparagraph 26 and in conjunction with Frege’s other works. (shrink)

Fefermans argument is indeed convincing in a certain context, it can be dissolved entirely by modifying the context appropriately.

Mathematical categories provide an abstract and general framework for logic and mathematics. As such, they could be used by philosophers in all the basic fields of the discipline: semantics, epistemology and ontology. In this paper, we present the basic definitions and notions and suggest some of the ways categories are starting to infiltrate formal philosophy.

The development of a scientific theory of mind was thus significantly delayed."--BOOK JACKET.

1 INSERM-CEA Unit 562, Cognitive Neuroimaging, Service Hospitalier Fre´de´ric Joliot, Orsay, France, 2 CNRS URA2182 Re´cepteurs and Cognition, Institut Pasteur, Paris, France.

Here Jean-Pierre Changeux elucidates our current knowledge of the human brain, taking an interdisciplinary approach and explaining in layman's terms the complex theories and scientific breakthroughs that have significantly improved our ...

A Study of the History and Philosophy of Category Theory Jean-Pierre Marquis. to say that objects are dispensable in geometry. What is claimed is that the specific nature of the objects used is irrelevant. To use the terminology already ...

In a remarkable exchange between neuroscientist Jean-Pierre Changeux and philosopher Paul Ricoeur, this book explores the vexed territory between these...

We argue that analyses of civil religious ideologies in civil rights contention must include the interplay of both movement and countermovement ideologies and must recognize the ways in which such discourse amplifies conflict as well as serves as a basis for unity. Based on in-depth interviews, archival research, and content analysis of civil religious language, this article examines how priestly and prophetic civil religious discourses, and the infusion of Black power ideologies, provided significant and dynamic resources for both movement and (...) countermovement ideologies during periods of civil rights contention in Cairo, Illinois, especially from 1969 to 1972. We compare the ways in which Cairo’s civil rights leaders mobilized prophetic versions of civil religion, and concomitantly, how white countermovement organizations used a priestly civil religion. On the prophetic side the themes of “equality,” “freedom,” “justice,” and the “right to revolt” against worldly socio-political arrangements were employed. On the priestly side, the theme of “law” and “order” was played up, with a secondary theme that connected religious acquiescence to worldly power with God’s will. The former rhetoric saw calls for economic and employment integration within God’s will and the nation’s destiny. The latter rhetoric contrasted civil rights claims as essentially “un-American.”. (shrink)

This paper explores how chemists are transforming their own current background in order to act upon the world without jeopardizing life. In this respect, I will envisage science as both a system of propositions and a set of engaged practices. The scrutiny of chemical innovations will allow me to query the concepts of paradigm and that of scientific community . In doing so, I will connect the philosophy of science with the philosophy of technology so as to think about our (...) relation with the world. (shrink)

If such a thing as nanoethics is possible, it can only develop by confronting the great questions of moral philosophy, thus avoiding the pitfalls so common to regional ethics. We identify and analyze some of these pitfalls: the restriction of ethics to prudence understood as rational risk management; the reduction of ethics to cost/benefit analysis; the confusion of technique with technology and of human nature with the human condition. Once these points have been clarified, it is possible to take up (...) some weighty philosophical and metaphysical questions which are not new, but which need to be raised anew with respect to nanotechnologies: the artificialization of nature; the question of limits; the role of religion; the finiteness of the human condition as something with a beginning and an end; the relationship between knowledge and know-how; the foundations of ethics. (shrink)

An examination of the fundamental role cybernetics played in the birth of cognitive science and the light this sheds on current controversies. The conceptual history of cognitive science remains for the most part unwritten. In this groundbreaking book, Jean-Pierre Dupuy—one of the principal architects of cognitive science in France—provides an important chapter: the legacy of cybernetics. Contrary to popular belief, Dupuy argues, cybernetics represented not the anthropomorphization of the machine but the mechanization of the human. The founding fathers (...) of cybernetics—some of the greatest minds of the twentieth century, including John von Neumann, Norbert Wiener, Warren McCulloch, and Walter Pitts—intended to construct a materialist and mechanistic science of mental behavior that would make it possible at last to resolve the ancient philosophical problem of mind and matter. The importance of cybernetics to cognitive science, Dupuy argues, lies not in its daring conception of the human mind in terms of the functioning of a machine but in the way the strengths and weaknesses of the cybernetics approach can illuminate controversies that rage today—between cognitivists and connectionists, eliminative materialists and Wittgensteinians, functionalists and anti-reductionists. Dupuy brings to life the intellectual excitement that attended the birth of cognitive science sixty years ago. He separates the promise of cybernetic ideas from the disappointment that followed as cybernetics was rejected and consigned to intellectual oblivion. The mechanization of the mind has reemerged today as an all-encompassing paradigm in the convergence of nanotechnology, biotechnology, information technology, and cognitive science. The tensions, contradictions, paradoxes, and confusions Dupuy discerns in cybernetics offer a cautionary tale for future developments in cognitive science. (shrink)

Appartient-il au philosophe de fixer strictement la compréhension de notre concept d'art, ou doit-il limiter sa tâche à celle d'une clarification de ses usages? À cette question, les textes de Jean-Pierre Cometti réunis dans ce volume répondent en choisissant la voie d'une esthétique « minimale », qui renonce aux vertiges de l'ontologie et aux ambitions définitionnelle de la philosophie analytique de l'art, tout en prenant acte du caractère caduc des grands récits spéculatifs hérités de l'esthétique idéaliste ou des (...) mirages de la déconstruction. (shrink)

Erasme l'avançait : «On ne naît pas humain, on le devient.» Mais comment peut-on le devenir? Quelles évolutions, quelles contraintes doit-on accepter, dès l'enfance puis tout au long de son existence, pour pouvoir vivre véritablement comme un homme? Et en quoi la société dans laquelle nous vivons favorise-t-elle ou empêche-t-elle ce parcours vers l'humanisation? Autant de questions que Jean-Pierre Lebrun travaille à clarifier depuis de très nombreuses années. Refusant à la fois la nostalgie d'un passé idéalisé et d'être (...) aveuglé par les sirènes du «progrès», il se demande si nous sommes encore capables, voire soucieux, de désirer. Sachant que le désir, le propre de l'homme, a affaire au langage et au manque. Et qu'il se différencie de la jouissance, comblante et par là même mortifère. Or notre société dite néolibérale, imposant la recherche éperdue de ladite jouissance, confondant égalité et égalitarisme, affaiblissant la fonction paternelle au nom du rejet, certes légitime, du patriarcat, tend à dévaloriser tout ce qu'implique la condition humaine. Ce qui a des conséquences majeures, et très concrètes, qu'explore ici Jean-Pierre Lebrun, dans tous les domaines de la vie individuelle et collective : la politique, l'éducation, la culture, le psychisme et ses pathologies, mais aussi la vie conjugale ou les modes de consommation. Une réflexion profonde mais accessible, du point de vue de la psychanalyse, sur les problèmes cruciaux que doit affronter l'homme contemporain. (shrink)

The aim of this paper is to clarify the role of category theory in the foundations of mathematics. There is a good deal of confusion surrounding this issue. A standard philosophical strategy in the face of a situation of this kind is to draw various distinctions and in this way show that the confusion rests on divergent conceptions of what the foundations of mathematics ought to be. This is the strategy adopted in the present paper. It is divided into 5 (...) sections. We first show that already in the set theoretical framework, there are different dimensions to the expression foundations of. We then explore these dimensions more thoroughly. After a very short discussion of the links between these dimensions, we move to some of the arguments presented for and against category theory in the foundational landscape. We end up on a more speculative note by examining the relationships between category theory and set theory. (shrink)

Jean-Pierre Dupuy, prophet of what he calls "enlightened doomsaying," has long warned that modern society is on a path to self-destruction. In this book, he pleads for a subversion of this crisis from within, arguing that it is our lopsided view of religion and reason that has set us on this course. In denial of our sacred origins and hubristically convinced of the powers of human reason, we cease to know our own limits: our disenchanted world leaves us (...) defenseless against a headlong rush into the abyss of global warming, nuclear holocaust, and the other catastrophes that loom on our horizon. Reviving the religious anthropology of Max Weber, Emile Durkheim, and Marcel Mauss and in dialogue with the work of René Girard, Dupuy shows that we must remember the world's sacredness in order to keep human violence in check. A metaphysical and theological detective, he tracks the sacred in the very fields where human reason considers itself most free from everything it judges irrational: science, technology, economics, political and strategic thought. In making such claims, The Mark of the Sacred takes on religion bashers, secularists, and fundamentalists at once. Written by one of the deepest and most versatile thinkers of our time, it militates for a world where reason is no longer an enemy of faith. (shrink)

Jean-Pierre Vernant delineates a compelling new vision of ancient Greece that takesus far from the calm and familiar images of Polykleitos and the Parthenon, and reveals a culture ofslavery, of blood sacrifice, of perpetual and ritualized warfare, of ceremonial hunting andecstasies.In his provocative discussions of various institutions and practices including war,marriage, and the city state, Vernant unveils a complex and previously unexplored intersection ofthe religious, social, and political structures of ancient Greece. He concludes with a genealogy ofthe study (...) of myth from antiquity to the present, and offers a critique of structuralism.Jean-PierreVernant is Professor Emeritus of Comparative Study of Ancient Religions at the College de France inParis. (shrink)

In this paper, we try to establish that some mathematical theories, like K-theory, homology, cohomology, homotopy theories, spectral sequences, modern Galois theory (in its various applications), representation theory and character theory, etc., should be thought of as (abstract) machines in the same way that there are (concrete) machines in the natural sciences. If this is correct, then many epistemological and ontological issues in the philosophy of mathematics are seen in a different light. We concentrate on one problem which immediately follows (...) the recognition of the particular status of these theories: the demarcation problem between ‘natural kinds’ and ‘artefacts’. (shrink)

Confronter un scientifique et un philosophe sur les neurosciences, leurs résultats, leurs projets, leur capacité à soutenir un débat sur la morale, sur les normes, sur la paix, tel est l'objet de ce livre. Le débat d'idées est trop rare en France. Affirmations péremptoires, critiques unilatérales, discussions incompréhensibles, dérisions faciles ne cessent d'encombrer le terrain sans souci pour des arguments qui, avant d'être convaincants,aspirent à être tenus pour plausibles, c'est-à -dire dignes d'être plaidés. Vivre un dialogue totalement libre et ouvert (...) entre un scientifique et un philosophe constitue une expérience exceptionnelle pour l'un comme pour l'autre. " (P. R. et J. -P. C. ). Paul Ricoeur est professeur honoraire à l'université Paris-X et professeur émérite à l'université de Chicago. Il est l'auteur de très nombreux ouvrages, notamment "La métaphore vive", "Temps et Récit", "Soi-même comme un autre". Jean-Pierre Changeux est professeur au Collége de France et à l'Institut Pasteur, membre de l'Académie des sciences. Il est notammentl'auteur de "L'Homme neuronal", "Matiére à pensée" (avec Alain Connes), et "Raison et Plaisir". ". (shrink)

It is commonly assumed across the language sciences that some semantic participant information is lexically encoded in the representation of verbs and some is not. In this paper, we propose that semantic obligatoriness and verb class specificity are criteria which influence whether semantic information is lexically encoded. We present a comprehensive survey of the English verbal lexicon, a sentence continuation study, and an on-line sentence processing study which confirm that both factors play a role in the lexical encoding of participant (...) information. (shrink)

Amidst the many brain events evoked by a visual stimulus, which are specifically associated with conscious perception, and which merely reflect non-conscious processing? Several recent neuroimaging studies have contrasted conscious and non-conscious visual processing, but their results appear inconsistent. Some support a correlation of conscious perception with early occipital events, others with late parieto-frontal activity. Here we attempt to make sense of those dissenting results. On the basis of a minimal neuro-computational model, the global neuronal workspace hypothesis, we propose a (...) taxonomy which distinguishes between vigilance and access to conscious report, as well as between subliminal, preconscious and conscious processing. We suggest that these distinctions map onto different neural mechanisms, and that conscious perception is systematically associated with a sudden surge of parieto-frontal activity causing top-down amplification. (shrink)

Les grands paradigmes des sciences humaines ont été constitués, au fil de l’histoire, par l’éviction progressive de la dimension affective des objets et méthodes scientifiques. Après un long désintérêt, pour partie dû à la préoccupation de l’objectivation des phénomènes retenus par l’analyse sociologique, mais aussi à l’hypostase du social, qui a trouvé notamment chez Durkheim un accomplissement encore plus accentué que dans la plupart des conceptions holistes, la question des émotions est l’...

Definition of the problem: Stem cell transplantations from umbilical cord blood, especially if from autologous origin, are often treated with distrust. Not only are the therapeutic effects controversial, but the question of ownership is also hard to answer from an ethical point of view. Furthermore, the extraction of umbilical cord blood is already related to information about the factual and potential health condition of the child and its parents. Arguments and conclusion: The three problems will be discussed separately. Despite certain (...) uncertainties, there are no weighty ethical arguments against the extraction of umbilical cord blood for autologous purposes. The owner of the umbilical cord blood should be the mother. The question of information is not at all typical for this problem area and does not carry more weight here than in other relevant medical situations. (shrink)

Zusammenfassung. Stammzellen-Transplantationen aus Nabelschnurblut, vor allem solchen aus autologer Quelle, wird oft mit Misstrauen begegnet. Die therapeutischen Effekte sind umstritten, aber auch die Eigentumsfrage lässt sich aus ethischer Sicht nicht leicht beantworten. Darüber hinaus ist bereits die Gewinnung von Nabelschnurblut mit Informationen über den faktischen und potentiellen Gesundheitszustand des Kindes und seiner Eltern verbunden. Die drei Problemgebiete werden einzeln gewichtet. Trotz bestehender Unsicherheiten stehen der Gewinnung von Nabelschnurblut zu autologen Zwecken keine gravierenden ethischen Argumente entgegen. Eigentümer des Nabelschnurblutes sollte die (...) Mutter sein. Die Informationsfrage ist keineswegs typisch für diesen Problembereich und wiegt hier nicht schwerer als in anderen relevanten medizinischen Situationen. (shrink)

There were three such assumptions required, one explicitly stated, and two not made explicit until Bayle. The explicit one was a certain commonly accepted double understanding of ‘destruction’: a ‘natural’ version, which made it no more than a change in a particular arrangement or ‘organization’ of particles through which an aggregate was destroyed by losing its identity, and a metaphysical version, which entailed the actual annihilation of a substance. It was assumed that the latter could be accomplished only by miraculous (...) supra-natural means available only to God. Thus, if it could be shown that the soul was ‘without parts,’ it followed that the soul was ‘naturally’ indestructible and thus immortal. Bayle summarized the Cartesian argument to immortality as follows. (shrink)