In the first chapter of the Origin of species and in two chapters of the Variation of animals and plants under domestication, Darwin discusses the origin of domestic pigeons, claiming that all the known breeds were produced from a single species: Columba livia, the rock pigeon. The detailed defense of this point is of high relevance in Darwin’s argumentation strategy, since the differences between the several domestic breeds is so large that, if they were found in the wild, they could (...) be classified as different species or genera. If man was able to produce such large differences, it becomes plausible that nature can produce even larger differences, and therefore the process of natural selection becomes acceptable. Darwin emphasizes the enormous differences between the several domestic breeds (that may have dissimilar cranial structures and a varying number of vertebrae), and at the same time he attempts to show that there are connections and transitions between the extreme types, arguing for their common origin. One of the several interesting parts of his argument is an experiment of crossing between widely different breeds, which led him to obtain pigeons similar to the wild species. The detailed analysis of Darwin’s study of pigeons shows the extreme care he took in his attempt to provide strong arguments for his theory. RESUMO: No primeiro capítulo do Origin of species, e em dois capítulos do Variation of animals and plants under domestication, Darwin discute a origem dos pombos domésticos, defendendo que todas as raças conhecidas provêm de uma única espécie: Columba livia, o pombo de rocha. A defesa detalhada desse ponto é de grande importância na estratégia argumentativa de Darwin, pois as diferenças entre as várias raças de pombos são tão grandes que, se fossem encontradas em estado selvagem, poderiam ser classificadas como espécies ou gêneros diferentes. Se o homem foi capaz de produzir mudanças tão grandes como essas, torna-se plausível que a natureza possa produzir diferenças ainda maiores, e assim o processo de seleção natural se torna aceitável. Darwin enfatiza as grandes diferenças entre as raças de pombos (que chegam a possuir, por exemplo, diferentes estruturas cranianas e diferentes números de vértebras), e ao mesmo tempo procura mostrar a existência de nuances e transições entre os tipos extremos, para defender a origem comum. Um dos aspectos interessantes de sua argumentação é um experimento de cruzamento entre raças bem diferentes, através da qual obtém pombos semelhantes à espécie selvagem. A análise detalhada desse estudo de Darwin mostra o extremo cuidado que ele tomava para tentar proporcionar fortes argumentos a favor de sua teoria. (shrink)

Reasons for action is a widely employed methodology in practical philosophy, and especially in moral philosophy. Reasons are facts that explain and justify actions. But, conceptually, if reasons were causes, incontinent actions would be impossible. When an agent ranks an evaluation about what to do as his best judgement, it entails that he has a reason for acting as that judgement prescribes. But when an agent acts incontinently, he acts in accordance to an intention that is not aligned with his (...) best evaluative judgement. Yet, if the agent’s best evaluative judgement provides him a reason for action, this reason should also be his strongest reason, and therefore, the strongest cause. How then can it be possible that an agent incontinently acts according to a reason of inferior causal strength? In this paper, I analyze how Davidson’s argument for the possibility of incontinent actions interacts with his causal theory of actions. I argue that Davidson’s proposal does not fully respect the two principles of intentional rationality, that he himself claims to be compelling. Lastly, I sketch some initial steps that might be helpful to drawing more precise conceptual distinctions in terms of the rationality of incontinent actions. (shrink)

This work describes the main basic concepts of the astrological work of Ptolemy, through an analysis of his Tetrabiblos. Comparing his ideas to those of other authors of his time, it is shown that Ptolemy does not present stoic influences, as claimed by some historians. The conclusion of the article is that the basis of Ptolemy's astrology was Aristotle's physics.

A selection of papers presented at the III South Cone Meeting of Philosophy and History of Science. Papers are in Portuguese and Spanish.

This paper discusses the possibility of an absolute vacuum - a space without any substance. The motivation of this study is the contrast between most philosophers, up to Descartes, who stated that a vacuum was impossible, and the 17th century change of outlook, when the possibility and effective existence of the vacuum was accepted after the experiments of Torricelli and Pascal. This article attempts to show that, contrary to the received opinion, the acceptance of an ether is preferable to the (...) acceptance of a vacuum for several reasons. First: it is impossible to provide an empirical proof of the non-existence of the ether; second, an absolute vacuum is unthinkable; third, the ether concept is useful for the understanding of physical phaenomena; and fourth, the hypothesis of an ether in apparently void spaces is useful for the future development of science. The paper also endeavours to show that no recent advance of science changed those conclusions and that no future development can change them. (shrink)

This paper studies Lamarck's scientific method both from the point of view of his methodological discourse and according to his scientific praxis. Lamarck's methodology is compared to Condillac's as well as to that of the idéologues - a group in which Lamarck is usually included. The analysis of this paper shows that Lamarck's methodological discourse is very similar to Condillac's, but his scientific praxis does not follow this view. Instead of following an empiricist approach, Lamarck's work is grounded upon general (...) metaphysical principles concerning nature. Thus, from the ideologues's point of view, Lamarck's work should have been rejected -and that is what really happened - as being a mere metaphysical system grupo no qual se costuma incluir o próprio Lamarck. Mostra-se que o discurso metodológico de Lamarck assemelha-se ao dos ideólogos; no entanto, sua prática científica não se coaduna com esse enfoque. Em vez de seguir uma abordagem empirista, a obra de Lamarck se fundamenta em princípios metafísicos gerais sobre a natureza. Sob o ponto de vista dos ideólogos, seu trabalho deveria ser rejeitado - o que de fato ocorreu - como um mero sistema metafísico - no sentido pejorativo utilizado pelos seguidores de Condillac. No entanto, o presente artigo argumenta que esse é justamente um importante e inovador aspecto da obra de Lamarck, que permitiu a eclosão do evolucionismo moderno. (shrink)

One core question in contemporary political economy is whether economic liberties should be constitutionally protected as basic rights. In this article I do not provide a positive argument for the view that economic liberties are basic rights. Rather, I seek to provide a reason for not embracing the opposing view, i.e. that economic liberties should not be constitutionally protected as basic rights. Based on Hayek’s theory of price as signal, I argue that price control, a view usually associated with high (...) liberals, and sometimes endorsed by moderate welfarists, is environmentally sub-optimal. (shrink)

In The moral problem (1994), Michael Smith tries to link three conflicting theories that alone are intuitively plausible, nevertheless, they do not seem to work well together. The first proposes that moral judgments are in fact beliefs about objective matters. The second states the concept of “practicality requirement”. The third is a humean belief-desire psychology, i.e. if a moral judgment is sufficient to explain actions, then it must involve a desire. If that is the case, it cannot be simply a (...) belief. For Smith, any attempt to solve the moral problem must find a way to hold all three doctrines. I will argue that his solution rests on two false assumptions. The first, a rationalist one which supports that what we have reason to do is what we would desire to do if we were fully rational. The second is the internalist thesis about moral motivation according to which a person who believes she is morally required to do something is either necessarily motivated to do it or she is practically irrational. I will base my critics on four objections raised by Copp, Miller, Shafer-Landau, Brink and Sayre-McCord. (shrink)

No presente ensaio, discute-se o impacto do negacionismo na Educação escolar. Essa ideologia é baseada em falsos argumentos, cujos protagonistas negam evidências cientificamente comprovadas, como forma de fortalecer seus anseios pelo poder. A narrativa negacionista atinge pessoas que aceitam acriticamente e replicam esses argumentos como se fossem verdades absolutas. Um dos resultados da disseminação e aceitação dessa ideologia é o estímulo a ações extremistas, como vimos acontecer recentemente no Brasil. A negação fomenta intencionalmente os analfabetismos histórico, social e científico. As (...) pessoas "contaminadas" por essa ideologia extremista ignoram os argumentos lógicos e permanecem alheias ao avanço da Ciência. Acreditam em disparates, como o chamado “terraplanismo”; são disseminadores de informações falsas; promovem “cruzadas” antivacinação; defendem o uso de medicamentos ineficazes; e fomentam o descrédito da democracia. As ideias de Paulo Freire, que estimulam o cultivo do pensamento crítico e emancipatório, é o aporte teóricometodológico que norteia este ensaio, contextualizado na prática docente dos autores, que consideram a Educação como uma prática de liberdade. (shrink)

From Antiquity to the 19th century it was very common to explain natural phenomena (especially biological ones) through final causes. This paper analyses one of the periods of development of this concept, in Antiquity, with special emphasis upon the contributions of Socrates and Plato. They introduced the idea of an intelligent and beneficial god, who plans the structure of the universe and of all beings in the best possible way. This concept was strongly influential in later periods. RESUMO: Da Antiguidade (...) até o século XIX foi muito comum procurar-se entender os fenômenos naturais (especialmente os biológicos) através de causas finais. Este artigo analisa um dos períodos de formação dessas concepções, na Antiguidade, dando especial atenção às contribuições de Sócrates e Platão. Estes introduzem a ideia de uma divindade inteligente e bondosa, que planeja a estrutura do universo e de todos os seres da melhor forma possível. Essa concepção teve grande influência, no período posterior. (shrink)

Dans cet article nous étudions le Trattato della sfera de Galilée, écrit avant 1600. C’est un traité d’astronomie géocentrique qui suit la structure du Tractatus de sphæra de Johannes de Sacrobosco. Nous analysons quelques particularités du traité, en le comparant à d’autres travaux astronomiques du xvie siècle, et nous discutons ses sources probables. Nous soutenons que l’influence du commentaire de Christoph Clavius sur la Sphæra de Sacrobosco ne peut pas être considérée comme son influence unique ou principale. Le traité de (...) Galilée était probablement inspiré par la Sfera del mondo de Piccolomini, un travail qui anticipait plusieurs particularités du Trattato della sfera. Cette influence est établie par de nombreuses annotations de Galilée trouvées dans un exemplaire du livre de Piccolomini. (shrink)

The sixth chapter of Charles Darwin’s Origin of Species is called “Difficulties of the Theory.” In that part of his work, Darwin reveals some possible objections to his theory and attempts to provide an answer to all of them. Such a chapter was part of the first edition of the Origin of Species; therefore, the difficulties described were not reactions derived from the publication of the book. Instead, friends like Charles Lyell have probably presented some of them. Others can be (...) found in works published before Darwin’s work, such as Natural Theology by William Paley, which argued for creationism and introduced arguments against any natural explanation of the origin of species. Many other problems dealt with in the sixth chapter were born, however, from Darwin’s own internal dialogue, his own initial doubts concerning the theory, and his anticipation of criticism, as one can gather from his manuscripts. This paper describes the main difficulties shown in the sixth chapter of the Origin of Species, providing a more detailed exposition of a few topics, and analyzing Darwin’s defense, in those cases. It also discusses some of the weak points in Darwin’s line of reasoning from a diachronic point of view. (shrink)

O conceito de pseudo-ciência procura identificar propostas que têm uma aparência científica mas que não satisfazem critérios rigorosos de cientificidade. Alguns exemplos muito citados de pseudo-fenômenos estão os fatos alegados pela parapsicologia e pela astrologia. Para caracterizar a pseudo-ciência alguns autores propuseram critérios psicológicos, sociológicos ou metodológicos. O objetivo básico de uma caracterização metodológica dos pseudo-fenômenos é permitir identificar aquilo que parece existir, mas não existe. Trata-se, portanto, de uma distinção essencialmente ontológica. Este trabalho irá descrever várias tentativas de estabelecer (...) critérios desse tipo e mostrará que nenhuma delas é satisfatória. Será apresentada uma abordagem alternativa, compatível com o caráter provisório do conhecimento científico, que permite avaliar a proposta de existência de um novo fenômeno e guiar a pesquisa, sem no entanto permitir concluir se o fenômeno existe ou não. (shrink)

The growth of urban violence in Brazil, as in other countries, has led citizens to demand more severe and punitive measures to solve the problem of juvenile crime. One motion submitted to the Brazilian parliament, for instance, proposes to reduce the age of penal majority from 18 to 16 years. Our hypothesis is that popular opinions about this proposal are largely constrained by construal levels and psychological distance. Accordingly, we expect that the knowledge and proximity to the circumstances associated with (...) juvenile transgression will influence opinions about the proposal. To test this hypothesis, we evaluated how opinion against or for the proposal can be explained by psychological distance and moral development theory. We studied two samples, composed of people who do not have a deep experience with the subject and workers from a juvenile justice court. After collecting socio-demographic information from the subjects and their answer to moral dilemmas, the data was subjected to a multivariate analysis by multimodal logistic regression for socio-demographic characteristics, Kohlberg moral stages, and opinion on the reduction of APM as dependent variables. Our findings suggest that 1) opinion about the APM depends on psychological distance and 2) socioeconomic variables may influence the average construal level of adolescent transgressors in the public’s perspective. (shrink)

Durante a formação, estudantes são constantemente expostos a estressores que, se persistentes, podem ocasionar a Síndrome de Burnout (SB). Considerando a importância dessa demanda, este estudo teve como objetivo identificar diferenças nas dimensões da SB em relação ao ano e turno em estudantes de Ps..

This work compares the views of René Descartes and Isaac Newton on the nature of gravitation and the possibility of direct action at a distance. In his early writings, Newton tried to find mechanical explanations of gravitation, but could not find any acceptable model. For that reason he preferred to avoid any mechanical explanation. He admitted that the existence of gravitation could be justified by induction, and used it to explain and to predict several phenomena, although gravitation itself was not (...) explained. Descartes, on the other side, tried to explain gravity and the motion of planets using a mechanical model that accepted the existence of vortices of invisible matter. He criticized authors of his time, such as Roberval, who tried to introduce action at a distance. Descartes argued that this would require that brute matter should be endowed with soul and intelligence. This article analyses the arguments of several authors (before and after Descartes) and concludes that Descartes' criticism of action at a distance is valid. RESUMO: Este trabalho discute as posições de René Descartes e Isaac Newton frente à natureza da gravitação e à possibilidade de ações diretas à distância. Newton procurou inicialmente explicações mecânicas da gravitação, porém, não encontrando nenhum modelo aceitável, preferiu não propor nenhuma explicação. Admitindo que a existência da gravitação era justificada pela indução, ele a utilizou para explicar e prever muitos fenômenos, sem que ela própria fosse, no entanto, explicada. Descartes, por sua vez, tentou explicar a gravidade e os movimentos dos planetas a partir de um modelo mecânico de um vórtice de matéria invisível, criticando duramente autores de sua época que, como Roberval, tentaram introduzir a idéia de ação à distância, pois isso exigiria atribuir-se alma e inteligência à matéria bruta. Estudando os argumentos de vários outros autores anteriores e posteriores a Descartes, o artigo defende a posição de Descartes. (shrink)

The issue concerning the nature of science can be dealt in different ways. The question “What is science?” can receive empirical answers (what has been science, historically?), normative answers (what should be science?) and analytical ones (what could be science?). The two later approaches concern Philosophy. This paper criticises some philosophical attitudes towards science (relativism, dogmatism, scepticism, ecletism). It claims the existence of a well grounded acquired epistemological wisdom, encompassed by “impotence principles” that exhibit some limits of the human thought (...) and point out what science cannot be. On the other side, there are no acceptable science/non-science demarcation criteria. This does not lead necessarily to a relativist or anarchist view, because it is possible to argue for a non-prohibitive axiological concept of science that could evaluate and guide research. RESUMO: A questão da natureza da ciência pode ser respondida sob diferentes pontos de vista. A pergunta “O que é a ciência?” pode receber respostas de tipo empírico (o que tem sido, historicamente, a ciência?), de tipo normativo (o que deveria ser a ciência?) e de tipo analítico (o que poderia ser a ciência?). Apenas esses dois últimos enfoques são pertinentes à Filosofia. Este artigo critica algumas atitudes filosóficas frente à natureza da ciência (relativismo, dogmatismo, ceticismo, ecletismo), defendendo no entanto a existência de pontos bem estabelecidos na Epistemologia, dados por “princípios de impotência” que mostram limites do pensamento humano e que indicam o que a ciência não pode ser. Por outro lado, não há critérios aceitáveis de demarcação entre ciência e não-ciência. Isso não leva necessariamente a uma posição relativista ou anarquista, pois é possível defender uma concepção axiológica não-proibitiva da ciência que permite avaliar e orientar a pesquisa. (shrink)

A considerable part of the 20th century epistemology was devoted to attempts at differentiating science from metaphysics or from non-science. Such demarcations try to establish necessary and sufficient conditions to ascribe the scientific status to a theory. However, all demarcations that were proposed conflict with scientific practice, and no proposal received general acceptance. This article suggests a new kind of approach, in which nothing is prohibited in science, but criteria for evaluating and guiding the scientific research are established through desiderata, (...) that establish sufficient (but not necessary) conditions to ascribe a positive scientific value to any contribution. RESUMO Grande parte da epistemologia do século XX discutiu a questão de diferenciar a ciência da metafísica ou da não-ciência. Tais demarcações procuram estabelecer condições necessárias e suficientes para que se atribua o status de ciência a uma teoria. No entanto, todas as demarcações propostas conflitam com a prática científica e nenhuma recebeu aceitação geral. Este artigo sugere um novo tipo de abordagem, em que não se proibe nada na ciência, estabelecendo-se no entanto critérios que permitam avaliar e guiar o trabalho científico, através de desiderata, que determinam condições suficientes (mas não necessárias) para que algo tenha um valor científico positivo. (shrink)

AUTORIDADE DOUTRINAL DE SANTO TOMÁS: DE 1878 A 1914 – SANTIAGO RAMÍREZ, O.P.

AUTORIDADE DOUTRINAL DE SANTO TOMÁS: DE 1914 A 1958 – SANTIAGO RAMÍREZ, O.P.

This paper describes the four causes accepted by Aristotle, and then focus upon his concept of final causes, especially emphasizing its use in the study of living beings. The article discusses several difficulties in interpreting Aristotle’s teleology, such as its relation with the concept of a providential god, and the difficulty of understanding goals in processes that do not include intelligent agency. The Aristotelian ideas on final causes are highly complex, and they are widely different from those usually ascribed to (...) the philosopher. RESUMO: Este artigo apresenta uma descrição dos quatro tipos de causas aceitas por Aristóteles, centralizando-se depois nas causas finais, focalizando principalmente seu uso no estudo dos seres vivos. Discute diversos problemas da interpretação da teleologia de Aristóteles, tal como sua relação com a ideia de um deus previdente e as dificuldades de compreensão de finalidades em processos que não envolvem agentes inteligentes. As ideias aristotélicas sobre as causas finais são altamente complexas, e muito diferentes das versões simplistas que costumam ser atribuídas ao filósofo. (shrink)

Este estudo se dispõe a reflexão sobre a relação entre o Direito Tributário e a proteção ambiental, pela análise das normas regulatórias tributárias, atuando como agente desestimulador de condutas degradantes ao meio ambiente. Normas tributárias podem ser utilizadas como instrumentos estimuladores do desenvolvimento sustentável e desestimuladores de condutas degradantes ambientais. A Constituição Federal estabeleceu as premissas do desenvolvimento econômico. A empresa deve atender a critérios, como desenvolver-se promovendo redução de desigualdades sociais, atendendo às relações de consumo e preservação ambiental. Neste (...) artigo se demonstra a importância das normas tributárias extrafiscais na regulação e contenção de danos ambientais. (shrink)

O ensaio tentar realizar um exercício hermenêutico de explicitar os sentidos de tempo que surgem no poema O tempo o homem, do poeta paraense Max Martins. Neste ensaio, as premissas interpretativas partem sobretudo do pensamento do filósofo paraense Benedito Nunes, tendo, no horizonte a Ontologia fundamental de Martin Heidegger, mas também de outros pensadores, como Giorgio Agamben. Além disto, o horizonte hermenêutico deste ensaio alcança um dos poetas que marcaram determinantemente a poesia de Max Marins, que foi seu amigo Mário (...) Faustino. Assim, o problema central desta investigação ensaística é a busca por saber o sentido dos tempos Ampulheta, Era, hera e Hora. A hipótese é que o aporte hermenêutico fenomenológico desenvolvido por Benedito Nunes para a relação dialógica, de “transa”, entre poesia e filosofia, viabilizada pelo que chamou de “passagem para o poético” (Kehre), oferece a tese de que o poema de Max Martins é um poema sobre o próprio poetar e sobre a “aventura” enquanto “evento” (Ereignis) da Hora que o artista faz. (shrink)

Although historians and philosophers of science usually try to explain the acceptance or rejection of hypotheses or theories by scientists, there are no well definite criteria to evaluate when a scientist accepts or rejects a theory/hypothesis. This work proposes a new method of analysis. The attitudes of scientists towards a theory or hypothesis are classified according to three dimensions (cognitive, instrumental and strategic). This method is exemplified by the study of the attitude of the British naturalist William Bateson (1861-1924) towards (...) chromosome theory. The analysis shows that Bateson never rejected the chromosome theory – a conclusion opposite to most historical accounts. RESUMEN: Los historiadores y los filósofos de la ciencia intentan explicar la aceptación o lo rechazo de determinadas hipótesis ó teorías por los científicos, pero no hay criterios claros que nos permitan decir lo qué es aceptación o rechazo. Este trabajo propone un nuevo método de análisis. Las actitudes de los investigadores son analizadas en relación a tres dimensiones (cognitiva, instrumental y estratégica). El método es ejemplificado por el estudio de la postura del naturalista inglés William Bateson (1861-1924) frente a la teoria cromosómica. El análisis que se realizó permitió verificar que Bateson jamás rechazó la teoría cromosómica, en contrario de lo que la mayoría de los historiadores afirman. (shrink)

There are several kinds of studies about science (metascientific): empirical studies (grounded upon historical, sociological and other factual data); formal studies (analytic studies, that is, grounded upon logical analysis, definitions, formal distinctions); and axiological studies (grounded on value analysis). Those approaches are epistemologically independent from each other, in the sense that from one of them it is impossible to draw conclusions pertaining to the others. Every normative proposal concerning science is essentially axiological, because it is associated to value judgments (what (...) is valid or invalid in science), and it is impossible to justify norms from empirical or analytical studies. It is important, therefore, to avoid confounding those three approaches, or passing from one of them to another without due notice, because this would lead to epistemological error. In order to emphasize those distinctions, the paper proposes the names "science of science" to describe empirical studies, "scientific methodology" for axiological studies on science that are grounded on internal values, and "analytical epistemology" to refer to formal studies, that merely offer coherent alternative descriptions of science. RESUMO: Os estudos sobre o conhecimento científico (metacientíficos) podem ser de vários tipos: empíricos (baseados em dados históricos, sociológicos, etc.), formais (analíticos, ou seja, baseados em análise lógica, definições e distinções formais) e axiológicos (baseados em análise de valores). Essas três formas de abordagem são epistemologicamente independentes, no sentido de que uma delas não permite tirar conclusões sobre as outras. Toda proposta normativa sobre a ciência é essencialmente axiológica, por estar associada a juízos de valores sobre o que é válido ou não na ciência, e não se pode justificar normas a partir de estudos empíricos ou a partir de estudos analíticos. É importante, por isso, não confundir os três tipos de abordagem, nem tentar passar inconscientemente de uma para outra, pois isso levaria a falhas epistemológicas graves. Para enfatizar essas distinções, o artigo propõe os nomes "ciência da ciência" para os estudos de base empírica, "metodologia científica" para os estudos axiológicos sobre a ciência, baseados em valores internos, e "epistemologia analítica" para estudos formais, que estabeleçam meras alternativas coerentes para a descrição da ciência. (shrink)

This is a collection of classics in moral and political philosophy containing only public domain and fair-use material. The primary role of this collection is to provide instructors, students, and researchers with a set of free materials. It unites in chronological order the most indispensible historical texts for an introduction to value theory, broadly construed. As such, the collection includes foundational works in intrinsic value theory, practical reason, normative ethics, metaethics, political theory, and political economy. It encompasses the most perennial (...) topics in political philosophy such as justifications of the right to rule (governmental authority, political legitimacy) and the duty to obey (political obligation), competing conceptions of human nature, the significance of individual liberty, the point of equality, assessments of private and common property systems, and the nature of a just distribution of goods. (shrink)

Este trabajo analiza las diferencias entre las teorías de Lorentz y Poincaré (quienes aceptaban el éter) y de Einstein, cuestionando las explicaciones comunes de los motivos por los cuales la teoría de la relatividad es preferible a la anterior. La principal diferencia entre los puntos de vista de Einstein y de Lorentz y Poincaré era de naturaleza epistemológica y no teórica. Cada uno de los enfoques tenía aspectos epistémicos positivos, pero de la misma manera les hacía falta a los dos (...) puntos de vista determinados aspectos que estaban presentes en la otra propuesta. Por lo tanto, una de ellas no era superior a la otra. De ese modo, no había argumentos conclusivos que permitieron elegir una de ellas y rechazar a la otra. (shrink)

This book contains a selection of papers presented at the V South Cone Meeting of Philosophy and History of Science. The language of the chapters is Portuguese, Spanish or English. Published by the South Cone Association for Philosophy and History of Science, www.afhic.org.

This paper addresses the context of emergence, development, and current status of the use of history and philosophy of science in science education in Brazil. After a short overview of the three areas (history of science, philosophy of science, and science education) in Brazil, the paper focuses on the application of this approach to teaching physics, chemistry, and biology at the secondary school level. The first Brazilian researches along this line appeared more consistently in the decade of 1970. From 1980 (...) onwards, the importance of this approach became widely accepted, and the subject became a common theme of dissertations and theses, appearing in conferences and educational journals. Since 1998, the use of history and philosophy of science was included among the government recommendations for secondary school science teaching in Brazil. Nowadays, this is an important line of research in graduate programs on science and mathematics education. However, the actual use of this approach in secondary education is still a desideratum. (shrink)

The Association of Philosophy and History of Science in the South Cone is a non-profit academic association, founded on May 5th, 2000, in Quilmes, Argentina, at the closing ceremony of the 2nd Meeting of Philosophy and History of Science in the South Cone. The creation of this Association was the result of the interest to deepen and strengthen the exchange between the researchers in Philosophy and History of Science from the countries of the South Cone, from the two first meetings (...) that took place in Porto Alegre and Quilmes onwards. Since then, there have been biennial meetings organized as its responsibility. The main aim of AFHIC is to contribute to a better understanding of science from a philosophical as well as a historical point of view in the Spanish and Portuguese-speaking countries, especially in those which belong to the American South Cone, promoting a space for reflection, exchange, discussion, communication, and dissemination of such an understanding. This volume is - with minor changes - the English version of Fisica: Estudos Filosofi cos e Historicos. It is composed of refereed and, in some cases, opportunely modifi ed contributions made by members of the Association of Philosophy and History of Science in the South Cone, some of them who are unfortunately no longer among us. Pablo Lorenzano Director of AFHIC's Book Series. (shrink)

In the early 20th century, science was supposed to be “value free”. In 1953 Richard Rudner claimed that “the scientist qua scientist makes value judgments”, and later philosophers discussed the relations between science and values. From the 60’s onward Michael Scriven and other authors came to the conclusion that non-moral values (intrinsic or epistemic values) are required to evaluate scientific works. This paper supports this general view. However, it stresses that there are several independent scientific values, corresponding to a multi-dimensional (...) value space, and for this reason it is commonly impossible to compare the scientific worth of two different scientific contributions. Scientific values can be used to guide and to evaluate scientific research. However, the result is not a linear succession of better and better theories, but a proliferation of different theories and hypotheses, each of them fulfilling only a few desiderata. RESUMEN: A principios del siglo XX se suponía que la ciencia era “libre de valores”. En 1953 Richard Rudner concedió que “el científico cómo científico hace juicios de valor”, y filósofos posteriores discutieron las relaciones entre la ciencia y los valores. De los años 60 hacia delante, Michael Scriven y otros autores llegaron a la conclusión que valores no-morales (valores científicos intrínsecos o epistémicos) son requeridos para evaluar trabajos científicos. El presente trabajo utiliza esta perspectiva general. Sin embargo, enfatiza que hay muchos valores científicos independientes, correspondiendo a un espacio multidimensional de valores, y por esta razón es comúnmente imposible comparar los valores científicos de dos contribuciones científicas diversas. Los valores científicos se pueden utilizar para dirigir y para evaluar la investigación científica. Sin embargo, el resultado no es una sucesión linear de teorías mejores y mejores, sino una proliferación de teorías y hipótesis diversas, y cada una de ellas satisfaz solamente algunos desiderata. (shrink)

: Suppose a scientist discovers a new, unpredicted phenomenon. How can one ascertain the causes, properties and laws of the phenomenon? How can one plan the investigation of the circumstances that affect the phenomenon, and of the effects that the new phenomenon could produce? If the phenomenon is completely unexpected and does not fit any previous theory, it is impossible to provide a theoretical prediction of its likely properties. In the empiricist tradition, therefore, the recommended method was to investigate all (...) possibilities, because in such cases it is impossible to exclude a priori anything. William Stanley Jevons provided a clear criticism of this method. It is impossible to investigate all possibilities, because they are boundless. Is it then impossible to plan the research of unexpected new phenomena? No. Jevons pointed out an alternative. According to Jevons, a scientist confronting a new, unexpected phenomenon, should compare it to other known phenomena to establish analogies. This comparison should allow the researcher to find out one or several known phenomena similar to the new one. This paper will present and discuss Jevons’ proposal in the context of late 19th century methodology of science. Keywords: scientific method; empirical research; analogy; Jevons, William Stanley. (shrink)

The focus of this paper is one of James Prescott Joule’s scientific contributions: the laws of heat production by electric currents in conductors. In 1841, the 22 years old Joule published a paper with the title “On the heat evolved by metallic conductors of electricity, and in the cells of a battery during electrolysis” where he presented an experimental study of that phenomenon and proposed two laws that were allegedly supported by his trials. On closer inspection, both his laboratory work (...) and his inferences can be challenged. The emphasis of this article is an attempt to understand Joule’s experimental undertaking, its highpoints and shortcomings, by a detailed analysis of this specific episode and by studying the precedents of his work and subsequent advancements. It is possible to point out several serious deficiencies of that investigation, and Joule’s contemporaries, such as Edmond Becquerel and Heinrich Lenz, did criticize some of his flaws and undertook new experiments to provide a sound basis for those laws. Besides providing a historical examination of that specific episode, this article uses this case study to tackle some features of the nature of science that may contribute to scientific education. (shrink)

Este trabajo discute si hoy todavía es posible admitir que hay principios a priori que no pueden ser abandonados por la física. La historia indica que ciertas “imposibilidades” filosóficas (como el movimiento, el vacuo y la acción directa a distancia) fueron sucesivamente abandonadas por la física. En el siglo XX, la mecánica cuántica rechazó al determinismo y al principio de simetría. La opinión más común entre los científicos es la de que cuando hay un conflicto entre física y filosofía hay (...) que despreciar a los principios a priori. Sin embargo, hay todavía casos en los cuales es posible negar la posibilidad de determinados objetos físicos que entran en conflicto con nuestros conceptos espaciales. El autor defiende que existen principios a priori válidos en la física, y que su abandono es una deficiencia de determinadas teorías físicas modernas. Tal postura no tiene por consecuencia la negación de tales teorías, pero impone la tarea de complementarlas o interpretarlas de un novo modo para que sean compatibles con los principios filosóficos. (shrink)

This paper studies Lamarck's scientific method both from the point of view of his methodological discourse and according to his scientific praxis. Lamarck's methodology is compared to Condillac's as well as to that of the idéologues - a group in which Lamarck is usually included. The analysis of this paper shows that Lamarck's methodological discourse is very similar to Condillac's, but his scientific praxis does not follow this view. Instead of following an empiricist approach, Lamarck's work is grounded upon general (...) metaphysical principles concerning nature. Thus, from the ideologues's point of view, Lamarck's work should have been rejected -and that is what really happened - as being a mere metaphysical system grupo no qual se costuma incluir o próprio Lamarck. Mostra-se que o discurso metodológico de Lamarck assemelha-se ao dos ideólogos; no entanto, sua prática científica não se coaduna com esse enfoque. Em vez de seguir uma abordagem empirista, a obra de Lamarck se fundamenta em princípios metafísicos gerais sobre a natureza. Sob o ponto de vista dos ideólogos, seu trabalho deveria ser rejeitado - o que de fato ocorreu - como um mero sistema metafísico - no sentido pejorativo utilizado pelos seguidores de Condillac. No entanto, o presente artigo argumenta que esse é justamente um importante e inovador aspecto da obra de Lamarck, que permitiu a eclosão do evolucionismo moderno. (shrink)

Lamarck's evolutionary theory has been regarded as groundless speculation by both coeval naturalists and modern historians of science. Lamarck is usually regarded as belonging to the group of the " idéologues" – followers of Condillac, with a strong empiricist outlook. Indeed, Lamarck refers respectfully to Condillac, and in his methodological discourse presents himself as an empiricist. However, if one compares his evolutionary theory with the empiricist requirements, Lamarck's work should be dismissed as groundless – a mere metaphysical " système" – (...) in the pejorative sense used by the followers of Condillac. There is, however, another way of looking at Lamarck's method. The analysis of his later works – specially Histoire naturelle des animaux sans vertèbres and Système analytique des connaissances positives de l'homme – shows that he did not follow an empiricist method. His point of departure is indeed metaphysical, but it is exactly the kind of metaphysics now accepted by the biological sciences: a strict physicalism, that requires that all natural phenomena be explained by natural laws. Following this requirement, Lamarck's method seems the best available solution of that time to the fundamental biological problems: the nature, origin and structure of living bodies. Lamarck's work was criticized as purely speculative and non-scientific because it was evaluated in the context of empiricism. He was not altogether clear about his method and maybe he did not realize that he was departing from the empiricist tradition. The reinterpretation of Lamarck's theory from the point of view of his non-empiricist physicalism allows a favorable evaluation of his work. RESUMO: A teoria evolucionista de Lamarck tem sido considerada como uma especulação sem fundamento, tanto por naturalistas de sua época quanto por historiadores atuais da ciência. Lamarck é usualmente considerado como pertencendo ao grupo do "idéologues" – seguidores de Condillac, com uma forte tendência empirista. De fato, Lamarck se refere com respeito a Condillac, e em seu discurso metodológico apresenta a si próprio como empirista. No entanto, se compararmos sua teoria evolucionista com as exigências empiristas, o trabalho de Lamarck deveria ser rejeitado como desprovido de fundamentos – um mero "système" metafísico – no sentido pejorativo utilizado pelos seguidores de Condillac. Há, no entanto, outro modo de considerar o método de Lamarck. A análise de seus últimos trabalhos – especialmente os livros Histoire naturelle des animaux sans vertèbres and Système analytique des connaissances positives de l'homme – mostra que ele não seguia um método empirista. Seu ponto de partida era na realidade metafísico, mas é exatamente o tipo de metafísica que é atualmente aceita pelas ciências biológicas: um fisicalismo estrito, que exige que todos os fenômenos naturais sejam explicados por leis naturais. Seguindo essa exigência, o método de Lamarck parece a melhor solução disponível naquela época para os fenômenos biológicos fundamentais: a natureza, a origem e a estrutura dos seres vivos. O trabalho de Lamarck foi criticado como puramente especulativo e não-científico porque foi avaliado no contexto do empirismo. Ele não foi totalmente claro sobre seu método, e talvez ele próprio não tivesse percebido que estava se afastando da tradição empirista. A reinterpretação da teoria de Lamarck sob o ponto de vista de seu fisicalismo não empirista permite uma avaliação positiva de seu trabalho. (shrink)

The mathematical or theoretical approach to the theory of measurement (opposed to the operational approach) is usually accepted by philosophers, at least in its general lines. Some recent criticimsms against this theory can be answered by qualifying the requirements of the theoretical approach as "desiderata", not as strict impositions or prohibitions. Besides, it is shown that the use of this approach is instrumental in creating mathematically simple quantitative laws and in allowing the development of a "scientific intuition" concerning the relevant (...) phenomena. RESUMO: Os filósofos geralmente aceitam pelo menos as idéias gerais da abordagem matemática ou teórica da teoria da mensuração. Essa abordagem opõe-se ao operacionalismo. Algumas críticas recentes contra a abordagem teórica podem ser respondidas qualificando-se as normas que ela propõe como "desiderata", e não como imposições ou proibições estritas. Além disso, mostra-se que o uso dessa abordagem ajuda a criar leis quantitativas matematicamente simples, e permite o desenvolvimento de um tipo de "intuição científica" sobre os fenômenos relevantes. (shrink)