The history of the classification of chemical elements is reviewed from the point of view of a bibliophile. The influence that relevant books had on the development of the periodic table and, conversely, how it was incorporated into textbooks, treatises and literary works, with an emphasis on the Spanish bibliography are analyzed in this paper. The reader will also find unexpected connections of the periodic table with the Bible or the architect Buckminster Fuller.
The dominant position in Philosophy of Science contends that downward causation is an illusion. Instead, we argue that downward causation doesn’t introduce vicious circles either in physics or in biology. We also question the metaphysical claim that “physical facts fix all the facts.” Downward causation does not imply any contradiction if we reject the assumption of the completeness and the causal closure of the physical world that this assertion contains. We provide an argument for rejecting this assumption. Furthermore, this allows (...) us to reconsider the concept of diachronic emergence. (shrink)
Advancing the reductionist conviction that biology must be in agreement with the assumptions of reductive physicalism (the upward hierarchy of causal powers, the upward fixing of facts concerning biological levels) A. Rosenberg argues that downward causation is ontologically incoherent and that it comes into play only when we are ignorant of the details of biological phenomena. Moreover, in his view, a careful look at relevant details of biological explanations will reveal the basic molecular level that characterizes biological systems, defined by (...) wholly physical properties, e.g., geometrical structures of molecular aggregates (cells). In response, we argue that contrary to his expectations one cannot infer reductionist assumptions even from detailed biological explanations that invoke the molecular level, as interlevel causal reciprocity is essential to these explanations. Recent very detailed explanations that concern the structure and function of chromatin—the intricacies of supposedly basic molecular level—demonstrate this. They show that what seem to be basic physical parameters extend into a more general biological context, thus rendering elusive the concepts of the basic level and causal hierarchy postulated by the reductionists. In fact, relevant phenomena are defined across levels by entangled, extended parameters. Nor can the biological context be explained away by basic physical parameters defining molecular level shaped by evolution as a physical process. Reductionists claim otherwise only because they overlook the evolutionary significance of initial conditions best defined in terms of extended biological parameters. Perhaps the reductionist assumptions (as well as assumptions that postulate any particular levels as causally fundamental) cannot be inferred from biological explanations because biology aims at manipulating organisms rather than producing explanations that meet the coherence requirements of general ontological models. Or possibly the assumptions of an ontology not based on the concept of causal powers stratified across levels can be inferred from biological explanations. The incoherence of downward causation is inevitable, given reductionist assumptions, but an ontological alternative might avoid this. We outline desiderata for the treatment of levels and properties that realize interlevel causation in such an ontology. (shrink)
The twenty-first century presents a major challenge for civil engineering. The magnitude and future importance of some of the problems perceived by society are directly related to the field of the civil engineer, implying an inescapable burden of responsibility for a group whose technical soundness, rational approach and efficiency is highly valued and respected by the citizen. However, the substantial changes in society and in the way it perceives the problems that it considers important call for a thorough review of (...) our structures, both professional and educational; so that our profession, with its undeniable historical prestige, may modernize certain approaches and attitudes in order to continue to be a reliable instrument in the service of society, giving priority from an ethical standpoint to its actions in pursuit of the public good . It possesses important tools to facilitate this work (new technologies, the development of communications, the transmission of scientific thought.···); but there is nevertheless a need for deep reflection on the very essence of civil engineering: what we want it to be in the future, and the ability and willingness to take the lead at a time when society needs disinterested messages, technically supported, reasonably presented and dispassionately transmitted. (shrink)
À la page 150 de Matière et Mémoire (MM), Bergson dit déjà du « virtuel » qu’il serait vain de vouloir « chercher l’obscurité sous la lumière ». Il reprend et précise cette idée trente ans plus tard (dans La Pensée et le mouvant, PM 32). Promenons « l’idée radicalement neuve » qui « capte plus ou moins une intuition », nous la verrons « elle, obscure, dissiper des obscurités ». Par elle, des problèmes jugés insolubles « vont se dissoudre (...) ». Ainsi « intellectualisée », cette lanterne bergsonie.. (shrink)
Coinciding with the scientific flourishing of the 5th / 11th century, which was favoured by the cultural policy of the Andalusi kingdoms ( muluk al-tawa'if ), Abu ‘ Umar ibn ‘ Abd al-Barr, Ibn Hazm and Sa‘ id al-Andalusi all dealt with the classification of the sciences in many works that are already known. Ibn Bajja began his career at the end of this period. In his glosses to al-Farabi’s commentary to the Isagoge he wrote a text on this subject (...) that has not yet been analysed. The present paper studies Ibn Bajja's classification in connection with his predecessors and with the scientific and philosophical background of Andalusi culture. In their classifications of the sciences, all these authors express and stress important factors of the evolution of Andalusi science and thought, such as the dialectic between religious and rational sciences and the importance of the scientific method derived from Aristotle's logic. Sa‘ id al-Andalusi and Ibn Bajja ( and, to a lesser extent, Ibn Hazm ) show the profound influence exerted by al-Farabi’s works, particularly the Ihsa' al-‘ ulum. Thus, Ibn Bajja foreshadows the evolution of sciences in the next century and the movement headed by Ibn Rushd, Ibn Tufayl and others, characterized by the search for concordance with the postulates set forth by philosophical disciplines. (Published Online August 10 2006). (shrink)
In September 2008, 10 years after the untimely death of Pere Alberch (1954–1998), the 20th Altenberg Workshop in Theoretical Biology gathered a group of Pere’s students, col- laborators, and colleagues (Figure 1) to celebrate his contribu- tions to the origins of EvoDevo. Hosted by the Konrad Lorenz Institute for Evolution and Cognition Research (KLI) outside Vienna, the group met for two days of discussion. The meeting was organized in tandem with a congress held in May 2008 at the Cavanilles Institute (...) for Biodiversity and Evolutionary Biology (ICBiBE) in Valencia, Spain. The talks at the KLI were equal parts: nostalgic remembrance, excitement over new ways of thinking about old problems, and an unrepressed vitriol against the resurgence of reductionist thinking in EvoDevo. Here we highlight some of the key aspects of Pere’s life and work that informed and infused the talks. (shrink)
This paper contains a joint study of two sentential logics that combine a many-valued character, namely tetravalence, with a modal character; one of them is normal and the other one quasinormal. The method is to study their algebraic counterparts and their abstract models with the tools of Abstract Algebraic Logic, and particularly with those of Brown and Suszko's theory of abstract logics as recently developed by Font and Jansana in their "A General Algebraic Semantics for Sentential Logics". The logics studied (...) here arise from the algebraic and lattice-theoretical properties we review of Tetravalent Modal Algebras, a class of algebras studied mainly by Loureiro, and also by Figallo, Landini and Ziliani, at the suggestion of the late Antonio Monteiro. (shrink)
This article explores links between the modern theory of rational choice and ethics. Ethics allows us to answer an unsolved question in modern decision theory: the structuring problem in decisions. Such a problem cannot be solved coming from the principle of expected utility. This principle can solve the problem of ‚choosing’ among given alternatives, but does not establish which alternatives should be taken into account in decision. In order to understand the structuring problem, the act of ‚choosing’ has to be (...) completed with three human acts: operating, predicting and evaluating. At the same time, the subjective criteria of rational choice – probability and utility – have to be completed with three objective criteria: efficiency, truth and goodness. Utility is a subjective value of an alternative considered in relation to another. Efficiency, truth and goodness are objective qualities of the joint alternatives in relation to the reality: the real operating possibilities of the agent, the real possibilities of his environment and the true good produced. So, the rule that guarantees a decision to be optimal would be: “do that which most certainly maximises our preferences, according to real operative resources, true knowledge and the right will”. However, this rule cannot be applied without the development of virtues, which could be seen as the main moral competences in decision-making. (shrink)
Em primeiro lugar, (1) examinarei a chamada Destruktion fenomenológica da ontologia medieval, componente básico do método a partir da história da ontologia. Nessa seção, coloco algumas questões sobre a apropriação da Idade Média com base na escolástica tardia, como se esta fosse o "cume" das reflexões precedentes! Em segundo lugar, (2) apresento a reflexão de próprio Heidegger sobre a ontologia medieval tal como se expõe no curso de semestre de verão de 1927 ("Os problemas fundamentais da fenomenologia"), ministrado na Universidade (...) de Marburg. Igualmente nessa parte, faço algumas reflexões críticas sobre a leitura heideggeriana dos medievais, que se presta muito mais para conhecer o próprio modo de pensar de Heidegger do que os medievais em si mesmos, ou seja, pela leitura cursiva dos textos em seu contexto histórico e cultural: sem o élan espiritual, consubstancial aos escritos de Tomás de Aquino, por exemplo, a organização conceitual deste último não pareceria um sistema assaz grandioso e seco? Esta não terá sido a compreensão de Heidegger, fruto da separação metodológica feita entre mística medieval e filosofia escolástica desde o curso não proferido intitulado "Fundamentos filosóficos da Mística Medieval" (1918-1919)? First, I will examine the so-called phenomenological Destruktion of medieval ontology, a basic component of the method of the history of ontology. In this section I put forth some questions regarding the appropriation of the Middle Ages by late scholasticism, which supposed itself the apex of preceding reflections. Secondly, I present Heidegger's own reflections on medieval ontology as presented in his course of the summer semester of 1927 ("The fundamental problems of phenomenology") taught at the University of Marburg. In this part I also make some critical reflections on Heidegger's reading of the medieval philosophers, which lends itself more to understanding Heidegger's way of thinking than that of the medievals themselves (i.e. as read in their historical and cultural context). Without spiritual élan, consubstantial with the writings of Thomas Aquinas, for example, would not the conceptual organization of Aquinas' system seem rather grandiose and dry? Would not this have been Heidegger's understanding, which was the result of a methodological separation made between medieval mysticism and Scholastic philosophy ever since his undelivered course entitled "Philosophical Foundations of Medieval Mysticism" (1918-1919)? (shrink)
Este artigo enfoca o modo como a teoria husserliana da lembrança se insere, por um lado, na estrutura significativa formulada primeiramente nas Investigações lógicas e, por outro, nos moldes da percepção como unidade temporal. Para tanto, apresenta-se, respectivamente na primeira e na segunda seções, o arcabouço das teorias husserlianas da significação e da percepção como retenção. Na terceira seção, é analisada a segunda forma de lembrança — a rememoração —, segundo o fio condutor em que Husserl a investiga nos contextos (...) da atenção, retenção, afecção e inconsciente. Finalmente, será considerado se o núcleo teórico da primazia do significado e do fluxo da consciência é, de fato, uma base propícia para a compreensão da lembrança em seu caráter de signo. --------------------------------------------------------------------------- This paper focuses on how Husserl's theory of memory is introduced, both in his significant structure, that was first formulated in the Logical Investigations and in the patterns of perception as a temporal unit. The first and second sections show, respectively, the framework of Husserl's theories of meaning and perception as retention. In the third section, the second mode of memory — recollection — is analyzed according to the thread that Husserl investigates in the contexts of attention, retention, affection and unconscious. Finally, we will consider whether the theoretical core of the primacy of meaning and the flow of consciousness is, in fact, an adequate basis for the comprehension of memory as a sign. (shrink)
O presente trabalho versa sobre o tema, central no projeto filosófico de Kant, da refutação do idealismo, concentrando-se em dois momentos da Crítica da Razão Pura (CRP): a Dedução Transcendental e a Refutação do Idealismo. Adoto duas hipóteses interpretativas: a primeira, de que a seção da CRP intitulada "Refutação do Idealismo" não esgota o projeto kantiano de uma refutação do idealismo, mas lhe fornece o acabamento, apresentando-se como um desenvolvimento de argumentos aduzidos na Dedução Transcendental. A segunda, de que a (...) refutação kantiana do idealismo assume uma forma bipartida pelo fato de que são essencialmente duas as figuras do idealista que a argumentação implicitamente apresenta como adversário da teoria transcendental do conhecimento. Chamarei essas figuras de idealista cético e idealista da autoconsciência e procurarei demonstrar e discutir a presença, na CRP, de dois distintos movimentos argumentativos anti-idealistas que lhes correspondem nas seções da Refutação e da Dedução. Finalmente, esboçarei a pergunta sobre se e em que medida, entendida na perspectiva de sua forma bipartida, a refutação kantiana completa do idealismo na CRP apresenta uma prova suficiente contra o interlocutor que, apesar de admitir, por hipótese, tanto a possibilidade do conhecimento objetivo quanto seu primado epistêmico em relação à consciência do Eu (consciência dos estados internos ou autoconsciência), subordina o domínio da objetividade à instância transcendental de uma consciência de objetos. This paper concerns about Kant's refutation of idealism and focuses on two chief sections of the Critique of Pure Reason: the Transcendental Deduction and the Refutation of Idealism. I shall argue firstly that the first Critique's section named "Refutation of Idealism", instead of exhausting Kant's project of refuting idealism, constitutes its accomplishment, offering a final deployment for some arguments adduced in the Transcendental Deduction. Secondly, I sustain that the refutation-project has two argumentative stages, since the idealist which is implicitly elected as the opponent of Kant's transcendental epistemology has essentially two faces. I shall term the one "skeptical idealist", and the other "self-consciousness idealist", and I'll endeavor to demonstrate accordingly two anti-idealistic lines of argument, both in the Refutation and in the Deduction. Finally, I shall attempt to assign some meaning to the question if kantian complete refutation of idealism amounts to a sufficient proof against a hypothetical opponent who, even though conceding both the possibility of objective cognition and its epistemic primacy towards self-consciousness, subordinates objectivity to the transcendental instance of a consciousness of objects. (shrink)
