The ArgumentIn writing the history of science, the fluctuations between two meanings of the concept of style are of special interest: a simple or direct meaning of this concept referring to a means of expression and of presentation, and a philosophical interpretation of this term referring to “a world of objective spiritual order.” The last two chapters of this paper consider the perspective of the simple meaning of the concept, the first two chapters take the philosophical meaning as their starting (...) point.The concept of style in its general epistemological meaning emerges within a conceptual space that becomes effective as a totality at the end of the eighteenth century and which is built up of further notions such as: individual, genius, expression, symbol, education, creativity, and others.The individual and, as believed, the nevertheless infinitely creative subject has taken the place that the concept of god had occupied within rationalism. But it is not only the subject as construction and will, but also the subject who reflected in a new way about the objective foundations of his conscience and tried to bring the object and the means of knowledge into a new relation. (shrink)

We examine the most famous controversy between economists as a means of shedding fresh light on the current debate about economic methodology. By focusing on the controversy as the primary unit of analysis, we show how methodological considerations are but one of a whole set of stratagems strategically employed by each opponent. We argue that each opponent's preference for a particular kind of stratagems expresses his own specific scientific style (within the general scientific and cultural style of an age). We (...) also describe a dynamic dimension of the controversy, independent of the participants' intentions. Such a dimension is analysed in a "cycle" of the controversy, which begins with a well-defined issue and expands to additional topics, without reaching a "solution" to the initial issue. The definition and re-definition of the issue(s) at stake and of the difference between both participants is an essential and recurrent feature of such cycles; the conclusion of a cycle does not imply a real "closure" of the controversy, but only that each opponent has reached a satisfying degree of self-clarification. The controversy, thus, does not yield persuasion -- its ostensible aim. Rather, its "benefit" seems to lie in an unintended result -- clarification and deepening of contrasting approaches to the discipline -- due to its peculiar dynamics. In so far as the history of a discipline requires a reconstruction of such contrasts, it is indispensable for it to take into account the controversies where they emerge, and to view both the positive doctrines and the methodological posture of the contenders as parts of a wider framework, that is a scientific style. (shrink)

The ArgumentIn this contribution, I argue for epistemological impurity as the key to the historical reconstruction of the proto-biological sciences of the eighteenth century.The traditional approaches to the more or less complex and more or less stratified past of science either focus on the ideal content of that which has in the meantime been recognized as standard biological knowledge or otherwise try to uncover the implicit cognitive principles at work in order to reveal their shortcomings.A closer look at the breakdown (...) of the classical models of mechanistic explanation and the detailed analysis of the new empirico-experimental research in the neurophysiology of the eighteenth century shows, however, that eclectic procedures of various kinds have dominated the field. This eclecticism supported, and was in turn supported by, what has recently become known as “thinking with one's hand.” The paper illustrates this specific kind of thinking with reference to the case of Nicolas Le Cat's microphysics of nervous activity. (shrink)

Geoffrey Lloyd, in his book Cognitive Variations , addresses the puzzle of cognitive diversity vs. cognitive unity of our mental life by analyzing a number of debates related to it. Accounting for the fact that human mental life across cultures both shares many of its fundamental features and differs in many others, no less fundamental ones, apparently cannot but engender a dilemma, as long as only reductionist solutions are considered, for neither radical diversity is reducible to unity nor vice versa. (...) The situation is further complicated by the fact that `division of labor' solutions involving a sort of schizophrenic fragmentation of the mind, are also unlikely, since even the most diverse mental tasks complement each other in what appears to be a seamless unity. In this review article, I undertake to highlight what I take to be the cornerstone of Lloyd's account, namely an approach that rejects the dichotomy `diversity vs. unity' and thus creates an alternative, `pragmatic' path for their essential cooperation-through- opposition. This proposal is supported by an analysis of Lloyd's treatment of several of the debates discussed in the book's chapters, as well as by references to my own work in pragmatics and controversies. (shrink)

In this expository article one of the contributions of Jean Cavailles to the philosophy of mathematics is presented: the analysis of ‘mathematical experience’. The place of Cavailles on the logico-philosophical scene of the 30s and 40s is sketched. I propose a partial interpretation of Cavailles's epistemological program of so-called ‘conceptual dialectics’: mathematical holism, duality principles, the notion of formal contents, and the specific temporal structure of conceptual dynamics. The structure of mathematical abstraction is analysed in terms of its complementary dimensions: (...) paradigmatic generalization (domain extension, descriptive definitions, creative role of the symbolism...) and thematic reflexivity of concepts (promotion of operations to objects of a higher type). (shrink)

Il semble que la science, au sens de l'activité des scientifiques, ne soit pas vraiment la même que celles dont s'occupent, chacune de leur coté, la réflexion philosophique et la recherche historique. Les scientifiques eux-mêmes ne sont pas toujours sensibles au lien que leur travail entretient avec la philosophie et avec l'histoire des sciences, bien qu'il concerne des significations et soit en situation d'état provisoire, entre une connaissance passée et des développements ou des interprétations futures. Cependant, les leçons de la (...) découverte et du travail scientifique, telles que ceux-ci se révèlent à travers la formulation par Einstein de la théorie de la relativité restreinte, cas étudié ici à titre d'exemple, montrent les rapports réciproques et nécessaires entre ces diverses dimensions de ce qu'on appelle la science. Cette mise en relation permet d'aborder d'une manière renouvelée certains problèmes ou certaines apories traditionnelles de la pensée de la connaissance scientifique. (shrink)

With the “linguistic turn” starting from the late nineteenth century, retaken in an unprecedentedway by the Austrian philosopher Ludwig Wittgenstein in the writings of his second phase, much of the epistemological questions are “dissolved”, with implications for educational research. Outstanding among them, is the grammatical description of the fundamental concepts of the field of education carried out by analytic philosophers of education. I intend to point out to other possible implications from Wittgeinstein’s philosophical therapy that, in my view, allows a (...) different treatment from the analytic branch to the philosophical issues of education. While this analytical movement continues to be tied to a referential conception of language, Wittgensteinian therapy takes into account the multiplicity of the functioning of our linguistic expressions, clarifying confusions arising from the dogmatic use of concepts such as teaching, learning, comprehension and evaluation, among others, thus preventing dogmatic attitudes in the educational field. For example, relativizing the epistemological assumptions underlying pedagogical practices, as well as clarifying the uses that are made of these concepts within theories that are guided by the myth of efficiency, which reduce teaching to problems solving demanded by a society that is not even problematized. As if there were no “values” behind these demands, which can lead the world to ruin and that could be others. One of the results of therapy, therefore, is to reveal the conventional nature of the rules we follow to use our concepts in general, since we are the ones who attribute necessity to them. Particularly in the field of education, this conceptual clarification that stems from the philosophical therapy points to pedagogical practices that are not reduced to initiating the student to our cultural heritage, but that has as their central concern the formation of a critical student who is be able to invent new rules, thus avoiding the prejudices coming from a dogmatic use of our concepts. (shrink)

I. Science, myth, magic: three components of knowledge, in other words three types of activity in man who, in interaction with his surrounding environment seeks to accomodate himself to the constraints which this environment imposes on him while at the same time seeing to his own immediate or far-reaching needs.

This book contains a selection of the papers presented at the Logic, Reasoning and Rationality 2010 conference in Ghent. The conference aimed at stimulating the use of formal frameworks to explicate concrete cases of human reasoning, and conversely, to challenge scholars in formal studies by presenting them with interesting new cases of actual reasoning. According to the members of the Wiener Kreis, there was a strong connection between logic, reasoning, and rationality and that human reasoning is rational in so far (...) as it is based on logic. Later, this belief came under attack and logic was deemed inadequate to explicate actual cases of human reasoning. Today, there is a growing interest in reconnecting logic, reasoning and rationality. A central motor for this change was the development of non-classical logics and non-classical formal frameworks. The book contains contributions in various non-classical formal frameworks, case studies that enhance our apprehension of concrete reasoning patterns, and studies of the philosophical implications for our understanding of the notions of rationality. (shrink)

In the middle part of his Brouillon Project on conics, Girard Desargues develops the theory of the traversale, a notion that generalizes the Apollonian diameter and allows to give a unified treatment of the three kinds of conics. We showed elsewhere that it leads Desargues to a complete theory of projective polarity for conics. The present article, which shall close our study of the Brouillon Project, is devoted to the last part of the text, in which Desargues puts his theory (...) of the traversal into practice by giving a very elegant tratment of the classical theory of parameters and foci. This will lead us to show that Desargues’ proofs can only be understood if one accepts that he reasons in a resolutely projective framework, completely assimilating elements at infinity to those at finite distance in his proofs. (shrink)