Lacan et les probabilités

Lacan was interested by the treatment of the probabilities, the theory of games and decision, all topics that gave way to an interpretation of Pascal’s calculus of partition and of the famous argument of betting. Starting from a critical examination of Kant’s transcendental aesthetics, that Lacan propounds to the philosophers to replace by logical space and time of the theory of game (as a substitute), the psychoanalyst attempts to prove that Pascal is probably the forefather of the theory of game and decision. A number of interpretations of the «geometer of hazard», which will happen in the years 1970, are in debt, perhaps unconsciously, surely in a secrete way, to the farther lacanian interpretation.     

Pre-Columbian congenital syphilis from the late antiquity in France

Today, exactly 500 years after the discovery of America, there is still a lot of controversy about the history of syphilis in Europe, especially about the Columbian and pre-Columbian hypotheses. This paper presents evidence for the presence of venereal treponematosis in the late Antiquity in France. The case that we examined comes from the necropolis of Costebelle (3rd-5th centuries AD; Hyères, Var, France). Grave no. 1 contained the well-preserved skeleton of a relatively old woman with the skeletal remains of an approximately 7-month-old fetus in her pelvic cavity. The osseous lesions of the fetal remains can be described in four groups: periosteal appositions on the skull vault (frontal and parietal); signs of periostitis on the long bones (bilateral cortical irregularities, predominantly on the left side, which affect first of all tibiae, femora, fibulae, radii and humeri, particularly in the metaphyseal region); some infraperiosteal detachment reminiscent of an infraperiosteal haematoma surrounding the distal extremity of the left forearm and the left hand; and finally, the irregular lesions of the humeral distal and proximal tibial metaphyses reminded us radiologically of Wimberger's signs. The most probable diagnosis of all the lesions mentioned above is that of a precocious congenital syphilis. This case consists of an argument against the epidemiological theories about the migration of Treponema pallidum from the New World back to the Old World starting at the end of the 15th century.     

Partis, Pari et Théorie des Jeux

This article looks at the "problem of the divisions" - a dialogue between two persons or more - to bring out its structure, in which religious and ethical elements are intermingled. It then offers a reevaluation of the argument of the wager, which is seen here as a sort of prefiguration of game theory rather than as the solution to a problem of probabilities. Although their correspondence suggests that Fermat and Pascal believed they were offering a solution to the same problem, they were not - as written by Fermat, the problem of divisions is a problem of probabilities, but ultimately Fermat did not solve the same problem as Pascal.     

La Langue des Sciences Sociales dans le Tableau historique de Condorcet

Condorcet started working on "social sciences" many years before the French Revolution. Although published in 1793-1794, his Tableau historique, was first conceived in the 1770s. It examined the necessary conditions for scientific reasoning and scientific languages. Analyzing the obstacles that stood in the way of the development of social sciences, Condorcet used case studies to offer a reflection on the making of a language that would be scientific and accessible to the enlightened citizen as well.