Marion Clara Vorms

Linkage (or genetic) maps are graphs, which are intended to represent the linear ordering of genes on the chromosomes. They are constructed on the basis of statistical data concerning the transmission of genes. The invention of this technique in 1913 was driven by Morgan's group's adoption of a set of hypotheses concerning the physical mechanism of heredity. These hypotheses were themselves grounded in Morgan's defense of the chromosome theory of heredity, according to which chromosomes are the physical basis of genes. In this paper, I analyze the 1919 debate between William Castle and Morgan's group, about the construction of genetic maps. The official issue of the debate concerns the arrangement of genes on chromosomes. However, the disputants tend to carry out the discussions about how one should model the data in order to draw predictions concerning the transmission of genes; the debate does not bear on the data themselves, nor does it focus on the hypotheses explaining these data. The main criteria that are appealed to by the protagonists are simplicity and predictive efficacy. However, I show that both parties' assessments of the simplicity and predictive efficacy of different ways of modeling the data themselves depend on background theoretical positions. I aim at clarifying how preference for a given model and theoretical commitments articulate

Models such as the simple pendulum, isolated populations, and perfectly rational agents, play a central role in theorising. It is now widely acknowledged that a study of scientific representation should focus on the role of such imaginary entities in scientists’ reasoning. However, the question is most of the time cast as follows: How can fictional or abstract entities represent the phenomena? In this paper, I show that this question is not well posed. First, I clarify the notion of representation, and I emphasise the importance of what I call the “format” of a representation for the inferences agents can draw from it. Then, I show that the very same model can be presented under different formats, which do not enable scientists to perform the same inferences. Assuming that the main function of a representation is to allow one to draw predictions and explanations of the phenomena by reasoning with it, I conclude that imaginary models in abstracto are not used as representations: scientists always reason with formatted representations. Therefore, the problem of scientific representation does not lie in the relationship of imaginary entities with real systems. One should rather focus on the variety of the formats that are used in scientific practice.

Résumé — La question de l’éducation, telle qu’elle se pose dès les premiers écrits de Simone Weil, où elle est pensée comme un apprentissage de la nécessité par l’action, puis dans ses réflexions politiques sur l’éducation syndicale d’une part et celle d’un peuple tout entier de l’autre, pour enfin se retrouver dans la pensée mystique des dernières années, offre un angle intéressant pour aborder l’œuvre de la philosophe. Jamais thématisée comme telle par Simone Weil, la notion d’éducation est pourtant transversale et permet de comprendre à la fois l’unité profonde et les apparentes contradictions de sa pensée. Dans cet article, nous dégageons un certain nombre de caractéristiques importantes de la notion d’éducation qui se retrouvent aux plans individuel, politique et finalement mystique. On verra peu à peu émerger l’importance de la notion de symbole qui nous permettra de proposer, à partir de la " philosophie de l’éducation " de Simone Weil, un " mode d’emploi " pour la lecture de son œuvre même.— The issue of education provides us with an interesting perspective to approach Simone Weil’s works : though she never takes education as such as an object of study, it is a ubiquitous notion which enables us to understand both the deep unity and the apparent contradictions of her thought. In her first works, education is thought of as concrete learning of the necessity by one’s own actions on the world. In her political reflections, Simone Weil is concerned with both the education of workers by the syndicate and the education of a whole country. Finally, the issue of education is central, as I will show, to her late mystical thought. In this paper, I emphasize some important features of " the notion of " education as it appears in the individual, political and mystical works of Simone Weil. The notion of symbol will turn out to be of central importance, and I will finally show that it provides us with some " reading instructions " of the very writings of Simone Weil from the perspective of her philosophy of education