There is a striking difference between the methodology of the young Einstein and that of the old. I argue that Einstein’s switch in the late 1910s from a moderate empiricism to an extreme rationalism should at least in part be understood against the background of his crushing personal and political experiences during the war years in Berlin. As a result of these experiences, Einstein started to put into practice what, drawing on Schopenhauer, he had preached for years, namely to use (...) science as his means of escaping from “the merely personal.” Whatever the exact sources of Einstein’s about-face, the older man has left us with a highly misleading picture of how the younger man achieved the successes that we still celebrate today. This has had a harmful influence on theoretical physics. If the young Einstein’s successes are any guide as to how successful theoretical physics is done, close adherence to general features of the empirical data is much more and mathematical elegance is much less important than the old Einstein wanted us to believe. (shrink)

An exciting and highly original examination of the practices of truth-telling and speaking out freely (parr?sia) in ancient Greek tragedy and philosophy. Foucault discusses the difficult and changing practices of truth-telling in ancient democracies and tyrannies and offers a new perspective on the specific relationship of philosophy to politics.

The history of research on pseudoalleles, closely linked genes that have similar functions, is rich and complex. Because pseudoalleles’ proximity on the chromosome makes their distinction by the complementation tests traditionally used by geneticists difficult, and because they have similar functions, they were initially often considered as allelic forms of the same gene, hence their name. The Hox cluster is an emblematic example of a pseudoallelic gene complex. The first observations of pseudoalleles were made very early but remained puzzling until (...) a simple model explaining their formation and characteristics emerged in the middle of the 1930s. This model suggested that pseudoalleles originated by gene.. (shrink)

An ode to Schopenhauer by one of France's most famous living authors.

The image of the “mirror” (鏡kagami) appears frequently in the philosophical texts of Nishida Kitaro (西田幾多郎1870-1945), where it assumes various functions. Mirror references first occur in meditations on the philosophies of Josiah Royce (1855-1916) and Henri Bergson (1859-1941). The most fascinating evocation here corresponds to the idea of a “self-enlightening mirror”, used to probe the philosophical ground for self-illumination. This idea seems to point back to Buddhist meaning that intervenes in Japanese intellectual history. We take this as our warrant for (...) establishing here, firstly, how Nishidean philosophical speculation can be critically related to the thought of Dogen (道元1200-1253); and, secondly, in what sense it has stimulated some contemporary approaches in Japanese philosophy (for example, those of Nitta, Ohashi, and Sakabe). (shrink)

Vers la fin du vie s.apr. J.‑C., le forum de Philippes est devenu une place de village, en fort contraste avec l’intense activité de construction d’églises qu’avait connue le centre de la ville dans la première moitié du siècle. Ce retour à la ruralité s’inscrit dans un courant plus général qui affecte alors les Balkans, mais la présente note étudie l’hypothèse que l’épidémie dite « peste de Justinien » a eu un fort impact à Philippes. Une vague connue à Constantinople (...) en 573‑574 a atteint Thessalonique en juillet 586 et a dû passer par Philippes. Ce facteur qui n’a pas été invoqué jusqu’ici pourrait expliquer les enterrements en masse très mal connus et mal datés observés par Paul Lemerle dans la basilique B, l’abandon de la construction de cette église en raison de la diminution des moyens financiers et surtout humains qui pouvaient lui être consacrés, et le déclin de la forme urbaine de la vie collective qui ne correspondait plus aux besoins d’une population devenue moins nombreuse. (shrink)

The relationship between Albert Einstein’s special theory of relativity and Hendrik A. Lorentz’s ether theory is best understood in terms of competing interpretations of Lorentz invariance. In the 1890s, Lorentz proved and exploited the Lorentz invariance of Maxwell’s equations, the laws governing electromagnetic fields in the ether, with what he called the theorem of corresponding states. To account for the negative results of attempts to detect the earth’s motion through the ether, Lorentz, in effect, had to assume that the laws (...) governing the matter interacting with the fields are Lorentz invariant as well. This additional assumption can be seen as a generalization of the well-known contraction hypothesis. In Lorentz’s theory, it remained an unexplained coincidence that both the laws governing fields and the laws governing matter should be Lorentz invariant. In special relativity, by contrast, the Lorentz invariance of all physical laws directly reflects the Minkowski space-time structure posited by the theory. One can use this observation to produce a common-cause argument to show that the relativistic interpretation of Lorentz invariance is preferable to Lorentz’s interpretation. (shrink)

In the Fall of 1900, Frederick T. Trouton started work on an ingenious experiment in his laboratory at Trinity College in Dublin. The purpose of the experiment was to detect the earth’s presumed motion through the ether, the 19th century medium thought to carry light waves and electric and magnetic fields. The experiment was unusual in that, unlike most of these so-called ether drift experiments, it was not an experiment in optics. Trouton tried to detect ether drift by charging and (...) discharging a capacitor in a torsion pendulum at its resonance frequency, which he hoped would set the system oscillating. (shrink)

When he formulated the program of neurophenomenology, Francisco Varela suggested a balanced methodological dissolution of the hard problem of consciousness. I show that his dissolution is a paradigm which imposes itself onto seemingly opposite views, including materialist approaches. I also point out that Varela's revolutionary epistemological ideas are gaining wider acceptance as a side effect of a recent controversy between hermeneutists and eliminativists. Finally, I emphasize a structural parallel between the science of consciousness and the distinctive features of quantum mechanics. (...) This parallel, together with the former convergences, point towards the common origin of the main puzzles of both quantum mechanics and the philosophy of mind: neglect of the constitutive blindspot of objective knowledge. (shrink)

We know very little about the history of the Belgian contribution to the European Construction from 1945 to the present. That wilt say that the historiography has to fill a gap, more particularly in the field of therole of leading men and pressure groups. The case of the European League for Economic Cooperation is a good one because it shows the determinant influence of a man and its friends over the « attentive opinion», not only in Belgium but also in (...) other European countries, at the beginning of the cold war about the so called European Challenge. But the birth and development of the ELEC show also that national problems could deeply influence an international initiative. The opposition of the Socialists in Belgium considerably hindered the international issue of the ELEC. (shrink)

Le débat sur l'interprétation de la mécanique quantique est, aujourd'hui, sensiblement différent de ce qu'il était dans la période de «fondation» de cette théorie. Cette modification tient à deux causes : l'ancrage des conceptions quantiques dans la pensée des physiciens, favorisé par l'utilisation systématique et fructueuse de la théorie quantique en physique atomique et subatomique, d'une part et, d'autre part, les développements théoriques et expérimentaux survenus au cours des vingt dernières années, qui ont amené à considérer comme des faits physiques (...) des énoncés qui paraissaient naguère relever davantage de l'interprétation, avec liberté d'options, voire de la spéculation. Quelle est la signification des énoncés et des concepts théoriques de la physique quantique ? et comment celle-ci s'est-elle modifiée ? Qu'entend-on par «interprétation» ? Telles sont les questions qui servent de guide à ce travail. Nous nous proposons de clarifier ce qui, dans les questions de signification, relève respectivement de la physique (essentiellement les contenus conceptuels et théoriques), et de perspectives philosophiques. Cette distinction est plus nette aujourd'hui qu'elle ne l'était au moment de l'établissement de la mécanique quantique, ce qui permet d'approfondir notre compréhension de chacun de ces deux aspects, qui s'enrichissent mutuellement de cette clarification. Nous nous interrogeons, pour terminer, sur ce que peut être une conception réaliste en termes d'un «monde d'objets quantiques». (shrink)

No artigo "Einstein y el efecto Compton", publicado neste número de SCIENTIÆ UDIA: , os autores estranham o fato de Einstein não ter declarado mais claramente o quanto esse efeito comprovava definitivamente o carácter corpuscular da radiação. A presente nota crítica pretende fornecer elementos adicionais de apreciação que permitam acompanhar o método de exploração do domínio dos quanta elaborado por Einstein, na ausência de uma teoria adequada, e praticado por ele de 1905 à 1925, evidenciando por esse meio propriedades inéditas (...) e inusuais dos fenômenos quânticos; e também explicitar o alvo que ele queria almejar com sua investigação e entender melhor seu pensamento acerca dos quanta. Três argumentos principais são delineados. (1) O problema dos quanta de luz está estreitamente ligado com aquele das propriedades quânticas da matéria atômica em geral, do qual não pode ser separado. (2) Outro experimento, realizado pouco depois do experimento de Compton, trouxe um elemento adicional, necessário para que se possa atribuir sem nenhuma reticiência uma quantidade de movimento à radiação, isto é, o caráter individual da interação da qual a radiação toma parte. (3) Enfim, os trabalhos de Einstein sobre a estatística quântica, realizados no mesmo período, apontavam na direção da generalização do duplo caráter onda-corpúsculo à radiação, como também à matéria, evidenciando a indiscernibilidade dos estados idênticos e revelando, assim, propriedades fundamentais radicalmente novas que toda teoria quântica futura haveria de incluir. In the article "Einstein y el efecto Compton", published in this issue of SCIENTIÆ UDIA: , the authors wonder why Einstein did not claim unambiguously that this phenomenon was a clear and definitive proof of the corpuscular character of radiation. The aims of the present critical note are to provide additional comments that serve to clarify the method that Einstein used for exploring the quantum domain, in the absence of a satisfactory theory - a method he practiced from 1905 to 1925, and from which he obtained evidence of new and unusual properties of quantum phenomena; and to try to formulate what he wanted to get at in his investigations, so as to understand better his thinking about quanta. Three main arguments are sketched. (1) The problem of light quanta cannot be separated from that of the quantum properties of atomic matter in general. (2) Another experiment, performed shortly after Compton's yielded a further element that was necessary to obtain a definitive answer to the question of whether a quantity of motion can be attributed to radiation. (3) Finally, Einstein's works on quantum statistics during that period pointed towards a generalization of the double wave-corpuscle behavior of radiation, and also of matter, providing evidence for the indistinguishability of identical states, thus revealing radically new fundamental properties that should be accounted for by any further quantum theory. (shrink)

It is presumed that the evolution of morphological diversity in animals and plants is driven by changes in the developmental processes that govern morphology, hence basically by changes in the function and/or expression of a defined set of genes that control these processes. A large body of evidence has suggested that changes in developmental gene regulation are the predominant mechanisms that sustain morphological evolution, being much more important than the evolution of the primary sequences and functions of proteins. Recent reports1, (...) 2 challenge this idea by highlighting functional evolution of Hox proteins during the evolutionary history of arthropods. BioEssays 24:775–779, 2002. © 2002 Wiley Periodicals, Inc. (shrink)

Avec l’entrée en vigueur de l’Énoncé de politique des trois conseils, la surveillance éthique continue fait maintenant partie intégrante du processus d’évaluation éthique sur la scène universitaire canadienne. Pourtant, malgré l’acceptation de ce concept, les chercheurs et les institutions se questionnent sur sa portée et sa mise en application. Dans cette perspective, cet article porte un regard sur les racines et les variantes du concept, les efforts de rationalisation dont il a fait l’objet en contexte américain d’où il a émergé (...) et sur le contexte de son entrée sur la scène canadienne. (shrink)

Que comprenons-nous du monde dans lequel nous vivons? Alors que celui-ci est entièrement pénétré par les technologies numériques, alors qu'elles modifient en profondeur nos pratiques intellectuelles, nous manquons singulièrement de moyens pour les comprendre. Puisque les machines et les algorithmes constituent une partie de notre réalité, il est de première importance, non seulement de savoir utiliser les outils numériques, mais, plus profondément, de s'approprier ce nouvel univers symbolique auquel nous appartenons tous.

La rencontre de Karl Barth permet à Henri Bouillard de manifester, d'une part, que la pensée barthienne évolue, et que, d'autre part, elle fait abstraction de l'expérience humaine et de son ouverture au surnaturel. Cela permet au théologien français d'établir que la relation de l'homme à Dieu est à la fois oeuvre de Dieu et oeuvre de l'homme, et en particulier que la connaissance de Dieu est une connaissance révélée et en même temps une connaissance naturelle, que l'analogie de la (...) foi ne va pas sans l'analogie de l'être, et que la morale et la politique sont hétéronomes dans leur inspiration et autonomes dans leur détermination. (shrink)

The two major options on which the current debate on the interpretation of quantum mechanics relies, namely realism and empiricism, are far from being exhaustive. There is at least one more position available, which is metaphysically as agnostic as empiricism, but which shares with realism a committment to considering the structure of theories as highly significant. The latter position has been named transcendentalism after Kant. In this paper, a generalized version of Kant's method is used. This yields a reasoning that (...) one is entitled to call a transcendental deduction of some major formal features of quantum mechanics. (shrink)

Por Laura Fraga de Almeida Sampaio, tradutora do livro A aula inaugural, que Foucault pronunciou ao assumir a cátedra vacante no Collège de France pela morte de Hyppolite, pode ser considerada um texto de ligação entre suas obras, datadas dos anos 60, como História da loucura, As palavras e as coisas, A arqueologia do saber, centradas predominantemente na análise das condições de possibilidade das ciências humanas, e as que se seguiram a maio de 68, como Vigiar e punir, voltados ao (...) exame da microfisica do poder. Foucault desvenda a relação entre as práticas discursivas e os poderes que as permeiam. Ao perceber os diversos procedimentos que cerceiam e controlam os discursos da sociedade, o autor comprova que "o discurso não é simplesmente aquilo que traduz as lutas ou os sistemas de dominação, mas aquilo pelo que se luta, o poder de queremos nos apoderar". Na segunda parte do texto, Foucault anuncia a direção em que prosseguirá suas investigações no decorrer dos cursos no Collège de France, apontando para o que denomina o "conjunto crítico" e o "conjunto genealógico" e lança o projeto de estudo das interdições que atingem o discurso da sexualidade. A este trabalho dedicará muitos anos, após a publicação do primeiro volume da História da sexualidade, em 1976: A vontade de saber (uso dos prazeres, vol.2, O cuidado de si, vol, 3, ambos de 1984). (shrink)

Toute science, admet-on, commence par détacher un objet en le rendant indépendant des sujets et des situations. Mais cette conception étroite de la connaissance scientifique laisse subsister des zones d'ombre. La conscience n'est pas un objet. Elle est ce sans quoi rien ne pourrait être pris pour objet. La conscience n'est pas détachable des sujets, car elle s'identifie à ce qui est vécu par un sujet. De façon analogue, en physique quantique, un phénomène n'est pas dissociable de son contexte expérimental, (...) car il s'identifie à ce qui se manifeste à grande échelle au laboratoire. Que faire pour ne pas laisser ces cas extrêmes de côté? Généraliser la méthode scientifique. Ne plus la borner à définir et à caractériser des objets, mais l'étendre à la coordination directe des expériences. Telle est la révolution de pensée qu'il faut accomplir pour résoudre, ou plutôt dissoudre, deux questions-limites de la science : le problème de l'origine de la conscience et le paradoxe du "chat de Schrödinger" en physique quantique. (shrink)

Les sciences de la nature construisent des symboles spécifiques pour saisir adéquatement la réalité de la nature. La puissance de leurs symboles est telle que la pensée scientifique déborde ce réel, l’anticipe, le reconstruit et finalement le réalise et le prolonge sur le plan technique. Mais quel est le point de départ de la symbolisation scientifique? Comment peut-elle, couplée à la technique, réaliser la réalité même de la nature? Enfin, le langage spécifique des sciences de la nature peut-il s’autonomiser par (...) rapport aux langues « naturelles », relatives à des groupes humains et parlées spontanément? L’enjeu consiste à montrer, tout à la fois, les limites et la puissance des symboles des sciences de la nature que sont la physique et la chimie. (shrink)