In the first part of chapter 2 of book II of the Physics Aristotle addresses the issue of the difference between mathematics and physics. In the course of his discussion he says some things about astronomy and the ‘ ‘ more physical branches of mathematics”. In this paper I discuss historical issues concerning the text, translation, and interpretation of the passage, focusing on two cruxes, ( I ) the first reference to astronomy at 193b25–26 and ( II ) the reference (...) to the more physical branches at 194a7–8. In section I, I criticize Ross’s interpretation of the passage and point out that his alteration of ( I ) has no warrant in the Greek manuscripts. In the next three sections I treat three other interpretations, all of which depart from Ross's: in section II that of Simplicius, which I commend; in section III that of Thomas Aquinas, which is importantly influenced by a mistranslation of ( II ), and in section IV that of Ibn Rushd, which is based on an Arabic text corresponding to that printed by Ross. In the concluding section of the paper I describe the modern history of the Greek text of our passage and translations of it from the early twelfth century until the appearance of Ross's text in 1936. (Published Online August 10 2006) Footnotes1 This paper was prepared as the basis of a presentation at a conference entitled “Writing and rewriting the history of science, 1900–2000,” Les Treilles, France, September, 2003, organized by Karine Chemla and Roshdi Rashed. I have compared Aristotle's and Ptolemy's views of the relationship between astronomy and physics in a paper called “Astrologogeômetria and astrophysikê in Aristotle and Ptolemy,” presented at a conference entitled “Physics and mathematics in Antiquity,” Leiden, The Netherlands, June, 2004, organized by Keimpe Algra and Frans de Haas. For a discussion of Hellenistic views of this relationship see Ian Mueller, “Remarks on physics and mathematical astronomy and optics in Epicurus, Sextus Empiricus, and some Stoics,” in Philippa Lang (ed.), Re-inventions: Essays on Hellenistic and Early Roman Science, Apeiron 37, 4 (2004): 57–87. I would like to thank two anonymous readers of this essay for meticulous corrections and thoughtful suggestions, almost all of which I readily adopted. (shrink)
Este trabalho tem como objetivo discutir aspectos relacionados à virtualização e à liberdade presentes nos jogos eletrônicos que se configuram como novos espaços de vivências, interação e subjetivação. Para tanto, buscamos captar a singularidade presente na relação que os jogadores estabelecem com o espaço virtual, utilizando como inspiração metodológica a cartografia. Na pesquisa, cinco jovens foram observados e relataram suas experiências com os jogos eletrônicos. A partir disso, identificamos que os jogos eletrônicos como espaços virtuais permitem lidar com a noção (...) de tempo de forma diferenciada, aumentam o grau de liberdade e flexibilizam aspectos morais, trazendo à tona a noção de ciberética. (shrink)
A compartmental model is described for the spread of Gambian sleeping sickness in a spatially heterogeneous environment in which vector and human populations migrate between two "patches": the village and the plantations. The number of equilibrium points depends on two "summary parameters": gr the proportion removed among human infectives, and R0, the basic reproduction number. The origin is stable for R0 1. Control strategies are assessed by studying the mix of vector control between the two patches that bring R0 below (...) 1. The results demonstrate the importance of vector control in the plantations. For example if 20 percent of flies are in the village and the blood meal rate in the village is 10 percent, then a 20 percent added vector mortality in the village must be combined with a 9 percent added mortality in the plantations in order to bring R0 below 1. The results are quite insentive to the blood meal rate in the village. Optimal strategies (that minimize the total number of flies trapped in both patches) are briefly discussed. (shrink)
The scientific community has debated the importance of “return” activities after ethnobiological studies. This issue has provoked debate because it touches on the ethics of research and the relationships with the people involved in these studies. This case study aimed to investigate community perception of an ethnobotany research project that was carried out in the semi-arid region of northeastern Brazil. Furthermore, we reported how the residents of this rural community felt about participating in the activities of “return” that arose from (...) the projects. Our findings demonstrate that “return” activities should be planned from the design phase of the research until its closure as a lifelong process that allows the communities involved to gradually take ownership of the information and actions that are being generated. Similarly, we argue that such activities must be negotiated with the people of the community so that they have decision-making power and autonomy to decide what is most relevant to their lives. (shrink)
Montaigne, no "De l'art de conferer", discute critérios que permitem distinguir os homens segundo suas capacidades (suffisances). A "maneira" de discursar ocupa o centro desta questão e entre suas qualidades se destaca a "ordem", que nos é apresentada, sobretudo, a partir dos desvios da "tolice" (sottise) e "obstinação" (opiniastreté), símbolos do dogmatismo e de uma errônea lide com os saberes que se apoiam na memória. Procura-se mostrar que a ordem se funda na assimilação e penetração do julgamento nas matérias que (...) garantem o nexo necessário para o desenvolvimento adequado da conversação (conference). Montaigne, in "De l'art de conferer", discusses the criteria to distinguish men according to their capabilities (suffisances). The "manner" of discussing is central to this issue and among its qualities "order" distinguishes itself. The "order" is presented to us by the exposition of its deviations: foolishness ("sottise") and obstinacy ("opiniastreté"). These inadequacies represent both dogmatism and an erroneous way of using knowledge based on memory. We intend to show how order is founded on a kind of judgment which assimilates and penetrates matters and subjects - being it the only way to assure the necessary connection to adequately develop the conversation ("conference"). (shrink)
Modelling of contagious disease usually employs compartmental SEIR-like models where the waiting times in respective compartments are exponentially distributed. In this paper, we are interested in investigating how the distributions of sojourn times in infective compartments affect the dynamics and persistence of the contagious bovine pleuropneumonia, a chronic respiratory disease of cattle. Two kinds of extreme distributions of the sojourn times are considered: a Dirac delta-function and truncated Gaussian function leading to a model with (non-constant) delay and the classical exponential (...) distribution that stands for a model without delay. Expressions of the basic reproductive numbers are derived and dynamical behaviours are discussed for the three models. It is found that the spreading of disease exhibits wave-like oscillations for the time-delay dynamics. In contrast, the disease appears to last longer when the spreading is described by the classical dynamics without delay. Subsequently, the time-delay dynamics turns out to be more appropriate for the description of an experimental epidemic of CBPP. (shrink)
In the first year of life, infants' utterances change from high-intensity crying to low-intensity acoustic sound strings, acoustically labelling the first word. This transition implies: (1) decoding of phonetic sounds, (2) encoding of phonetic sounds, and (3) a unique linking of an articulated sound to a specific object. Comparative, ontogenetic, and phylogenetic aspects are considered for multilevel selective pressures.
Reseha do livro de Cornelius Castoriadis. Sobre ‘O Político’ de Platáo. Traduçáo de Luciana Moreira Pudenzi. Sáo Paulo: Loyola, 2004. [Coleçáo Leituras Filosóficas].
The return of individual research results to participants raises many socio-ethical issues and is even more challenging when the participant is a child. The objective of this article is to present an overview of the few ethical guidelines and relevant literature addressing the return of individual results in pediatric research. By reviewing policies and the literature, we present some overarching considerations and delineate contextual issues in order to propose a framework.
The papers in this volume question how perceptions of space influenced understandings of the body and its functions, illness and treatment, and the surrounding natural and built environments in relation to health in the classical and ...
The tissue biobanking of specific biological residual materials, which constitutes a useful resource for medical/scientific research, has raised some ethical issues, such as the need to define which kind of consent is applicable for biological residual materials biobanks.
This commentary focuses on the limitations of the E-Z Reader model in its attempt to explain refixation saccades in reading. Listing factors that influence probability of refixating leads the model to assume two sorts of refixations. However, taking into account data on the metrics of refixation saccades allows us to propose an alternative explanation for empirical observations reported in the literature.
Este trabajo analiza las imágenes del espacio patagónico que pone a rodar la novela La costurera y el viento (1994) de César Aira, así como los procedimientos discursivos con que se construyen dichas imágenes. El libro exhibe a la Patagonia como un cuerpo textual y textualizado complejo, a través del cual se problematiza la construcción literaria de la región, como zona liminal profusa en ficciones de identidades. Desde una ostensible performatividad narrativa, la novela conjuga la invención del espacio con la (...) frecuente referencia a una cartografía histórica y literaria que se actualiza en una dispersión de afiliaciones intertextuales. This work analyzes the images of the Patagonian space putted on display in the novel La costurera y el viento (1994) by César Aira, as well as the discursive procedures with which these images are constructed. The book exhibits the Patagonia as a textual and textualized corpus complex, through which the literary construction of the region, as a liminal zone profuse in fictions of identities, is problematized. From an ostensible narrative performativity, the novel combines the invention of the space and the frequent reference to a historical and literary cartography updated in a dispersion of intertextual affiliations. (shrink)
In this book, Karin Knorr Cetina compares two of the most important and intriguing epistemic cultures of our day, those in high energy physics and molecular ...
Hegel's Philosophy is notorious for its alleged claim that all things are contradictory. Whereas Marxists took this claim to support their view that the social-political world exhibits "real" contradictions, non-Hegelian philosophers of various breeds have used it to argue that Hegelian dialectic annihilates the very principle of scientific reasoning.1 Yet, even if it is granted that Hegel did not intend to violate the law of non-contradiction, the stakes of Hegel's account of contradiction in the Science of Logic are far from (...) clear. According to Robert Pippin, Hegel's claim that all things are contradictory is "one of the most important, even if most obscure things said in the Logic."2 In what follows, I hope to .. (shrink)
Abstract: This article contends that the relation of early logical empiricism to Kant was more complex than is often assumed. It argues that Reichenbach's early work on Kant and Einstein, entitled The Theory of Relativity and A Priori Knowledge (1920) aimed to transform rather than to oppose Kant's Critique of Pure Reason. One the one hand, I argue that Reichenbach's conception of coordinating principles, derived from Kant's conception of synthetic a priori principles, offers a valuable way of accounting for the (...) historicity of scientific paradigms. On the other hand, I show that even Reichenbach, in line with Neo-Kantianism, associated Kant's view of synthetic a priori principles too closely with Newtonian physics and, consequently, overestimated the difference between Kant's philosophy and his own. This is even more so, I point out, in the retrospective account logical empiricism presented of its own history. Whereas contemporary reconstructions of this history, including Michael Friedman's, tend to endorse this account, I offer an interpretation of Kant's conception of a priori principles that contrasts with the one put forward by both Neo-Kantianism and logical empiricism. On this basis, I re-examine the early Reichenbach's effort to accommodate these principles to the paradigm forged by Einstein. (shrink)
In this paper the claim that Zeno's paradoxes have been solved is contested. Although "no one has ever touched Zeno without refuting him" (Whitehead), it will be our aim to show that, whatever it was that was refuted, it was certainly not Zeno. The paper is organised in two parts. In the first part we will demonstrate that upon direct analysis of the Greek sources, an underlying structure common to both the Paradoxes of Plurality and the Paradoxes of Motion can (...) be exposed. This structure bears on a correct - Zenonian - interpretation of the concept of “division through and through”. The key feature, generally overlooked but essential to a correct understanding of all his arguments, is that they do not presuppose time. Division takes place simultaneously. This holds true for both PP and PM. In the second part a mathematical representation will be set up that catches this common structure, hence the essence of all Zeno's arguments, however without refuting them. Its central tenet is an aequivalence proof for Zeno's procedure and Cantor's Continuum Hypothesis. Some number theoretic and geometric implications will be shortly discussed. Furthermore, it will be shown how the “Received View” on the motion-arguments can easely be derived by the introduction of time as a (non-Zenonian) premiss, thus causing their collapse into arguments which can be approached and refuted by Aristotle's limit-like concept of the “potentially infinite”, which remained — though in different disguises - at the core of the refutational strategies that have been in use up to the present. Finally, an interesting link to Newtonian mechanics via Cremona geometry can be established. (shrink)
We investigate the structure common to causal theories that attempt to explain a (part of) the world. Causality implies conservation of identity, itself a far from simple notion. It imposes strong demands on the universalizing power of the theories concerned. These demands are often met by the introduction of a metalevel which encompasses the notions of 'system' and 'lawful behaviour'. In classical mechanics, the division between universal and particular leaves its traces in the separate treatment of cinematics and dynamics. This (...) analysis is applied to the mechanical theories of Newton and Leibniz, with some surprising results. (shrink)
It will be shown in this article that an ontological approach for some problems related to the interpretation of Quantum Mechanics could emerge from a re-evaluation of the main paradox of early Greek thought: the paradox of Being and non-Being, and the solutions presented to it by Plato and Aristotle. More well known are the derivative paradoxes of Zeno: the paradox of motion and the paradox of the One and the Many. They stem from what was perceived by classical philosophy (...) to be the fundamental enigma for thinking about the world: the seemingly contradictory results that followed from the co-incidence of being and non-being in the world of change and motion as we experience it, and the experience of absolute existence here and now. The most clear expression of both stances can be found, again following classical thought, in the thinking of <span class='Hi'>Heraclitus</span> of Ephesus and Parmenides of Elea. The problem put forward by these paradoxes reduces for both Plato and Aristotle to the possibility of the existence of stable objects as a necessary condition for knowledge. Hence the primarily ontological nature of the solutions they proposed: Plato's Theory of Forms and Aristotle's metaphysics and logic. Plato's and Aristotle's systems are argued here to do on the ontological level essentially the same: to introduce stability in the world by introducing the notion of a separable, stable object, for which a principle of contradiction is valid: an object cannot be and not-be at the same place at the same time. So it becomes possible to forbid contradiction on an epistemological level, and thus to guarantee the certainty of knowledge that seemed to be threatened before. After leaving Aristotelian metaphysics, early modern science had to cope with these problems: it did so by introducing "space" as the seat of stability, and "time" as the theater of motion. But the ontological structure present in this solution remained the same. Therefore the fundamental notion `separable system', related to the notions observation and measurement, themselves related to the modern concepts of space and time, appears to be intrinsically problematic, because it is inextricably connected to classical logic on the ontological level. We see therefore the problems dealt with by quantum logic not as merely formal, and the problem of `non-locality' as related to it, indicating the need to re-think the notions `system', `entity', as well as the implications of the operation `measurement', which is seen here as an application of classical logic (including its ontological consequences) on the material world. (shrink)
In this paper I investigate the relation between physics and metaphysics in Plato’s participation theory. I show that the logic shoring up Plato’s metaphysics in paraconsistent, as had been suggested already by Graham Priest. The transformation of the paradoxical One-and-Many of the pre-Socratics into a paraconsistent Great-and-Small bridges the abyss between archaic rationality and the world of classical logic based ultimately on the principle of contradiction. Indeed, language is an organ of perception, not simply a means of communication. J. Jaynes, (...) Origin of Consciousness. (shrink)
Ever since work of Paul Feyerabend, Russell Hanson and Thomas Kuhn in the 1960s, the thesis of the theory-ladenness of scientific observation has attracted much attention both in the philosophy and the sociology of science. The main concern has always been epistemic. It was argued –or feared– that if scientific observations depend on prevalent theories, an objective empirical test of theories and hypotheses by independent observation and experience is impossible. This suggests that theories might appear to be well confirmed by (...) observation, and yet it is not likely that they are largely true or empirically adequate. While some philosophers like Ian Hacking have argued that serious theory-dependence is less common than often assumed, sociologists such as David Bloor, Stephen Shapin, Karin Knorr-Cetina or Harry Collins have based their constructivist programs for the sociology of science on strong claims of theory-ladenness. (shrink)
In this highly accessible book eight distinguished experts from a wide range of disciplines consider the nature and use of evidence in the modern world.
This essay re-examines Hegel's account of Greek culture in the section of the _Phenomenology of Spirit_ devoted to “ethical action”. The thrust of this section cannot be adequately grasped, it is argued, by focusing on Hegel's references to either Sophocles' _Antigone_ or Greek tragedy as a whole. Taking into account Hegel's complex use of literary sources, the essay shows in particular that Hegel draws on Aristophanes' comedies to comprehend the collapse of Greek culture, a collapse he considered to result from (...) the tragic conflict constitutive of Greek culture as a whole. The essay thus aims to shed light on Hegel's abstruse remarks on womanhood and, more generally, to demonstrate that Hegel's peculiar employment of literary sources constitutes an essential element of the method he employs throughout the _Phenomenology of Spirit_. (shrink)
Philosophy with children (P4C) 1 presents significant positive challenges for educators. Its 'community of enquiry' pedagogy assumes not only an epistemological shift in the role of the educator, but also a different ontology of 'child' and balance of power between educator and learner. After a brief historical sketch and an outline of the diversity among P4C practitioners, epistemological uncertainty in teaching P4C is crystallised in a succinct overview of theoretical and practical tensions that are a direct result of the implementation (...) of P4C in mainstream education. These recurring pedagogical tensions in my practice as P4C teacher, teacher educator and mentor of teacher educators cause disequilibrium that opens up rich opportunities for philosophy of education in supporting novice P4Cers. Disequilibrium is a positive force that opens up a space in which educators need to reflect upon their values, their beliefs about learning and teaching, and ultimately encourages educators to rethink their own role. Plato's metaphor of the stingray highlights the role of the P4C teacher educator as model of the P4C teacher in any setting: 'to numb and to be numbed'. The P4C community and its institutions need to address the questions arising from these pedagogical tensions; and this needs to be done with integrity, that is, in communities of enquiry that include children. If not, in the long term, a more instrumental version of P4C may prevail. (shrink)
We analyze the developments in mathematical rigor from the viewpoint of a Burgessian critique of nominalistic reconstructions. We apply such a critique to the reconstruction of infinitesimal analysis accomplished through the efforts of Cantor, Dedekind, and Weierstrass; to the reconstruction of Cauchy’s foundational work associated with the work of Boyer and Grabiner; and to Bishop’s constructivist reconstruction of classical analysis. We examine the effects of a nominalist disposition on historiography, teaching, and research.
We explore the potential of Simon Stevin’s numbers, obscured by shifting foundational biases and by 19th century developments in the arithmetisation of analysis.
In Epistemic Cultures (1999), Karin Knorr Cetina argues that different scientific fields exhibit different epistemic cultures. She claims that in high energy physics (HEP) individual persons are displaced as epistemic subjects in favor of experiments themselves. In molecular biology (MB), by contrast, individual persons remain the primary epistemic subjects. Using Ed Hutchins' (1995) account of navigation aboard a traditional US Navy ship as a prototype, I argue that both HEP and MB exhibit forms of distributed cognition. That is, in both (...) fields cognition is distributed across individual persons and complex artifacts. The cognitive system producing the knowledge is heterogeneous. Nevertheless, in both fields we can reserve epistemic agency for the human components of these systems. We do not need to postulate new distributed cognitive agents, let alone ones exhibiting new forms of consciousness. (shrink)
Drawing on the work of Putnam, Michael Dummett and Donald Davidson, the author elaborates a non-metaphysical realist perspective that she recommends as a ...
This essay is an attempt to analyze, classify and illustrate different scholarly approaches to the Sanskrit philosophical commentaries as reflected in some influential and especially thoughtful studies of Indian philosophy; at the same time it highlights some specific features involving commentary and annotation in general, drawing from results of studies on commentaries conducted in other disciplines and fields, such as Classical and Medieval Studies, Theology, and Early English Literature. In the field of South Asian Studies, philosophical commentaries may be assessed (...) from various overlapping and not always exclusive points of view, such as preservation of otherwise lost historical information, historical authenticity and reliability, interpretational innovation, spiritual or experiential insight, philosophical creativity, intellectual liveliness, doxographic intent, degree of incidentality, expository breadth and explanatory depth. The essay provides numerous examples taken from classical to early modern philosophical literature, especially of the Brahminical and Buddhist traditions, and also discusses their diverging perception by modern scholars and interpretators. (shrink)
Recent global advances in available technology to prevent mother-to-child HIV transmission necessitate a rethinking of contemporary and previous ethical debates on HIV testing as a means to preventing vertical transmission. In this paper, we will provide an ethical analysis of HIV-testing strategies of pregnant women. First, we argue that provider-initiated opt-out HIV testing seems to be the most effective HIV test strategy. The flip-side of an opt-out strategy is that it may end up as involuntary testing in a clinical setting. (...) We analyse this ethical puzzle from a novel perspective, taking into account the moral importance of certain hypothetical preferences of the child, as well as the moral importance of certain actual preferences of the mother. Finally, we balance the conflicting concerns and try to arrive at an ethically sound solution to this dilemma. Our aim is to introduce a novel perspective from which to analyse testing strategies, and to explore the implications and possible benefits of our proposal. The conclusion from our analysis is that policies that recommend provider-initiated opt-out HIV testing of pregnant mothers, with a risk of becoming involuntary testing in a clinical setting, are acceptable. The rationale behind this is that the increased availability of very effective and inexpensive life-saving drugs makes the ethical problems raised by the possible intrusiveness of HIV testing less important than the child's hypothetical preferences to be born healthy. Health care providers, therefore, have a duty to offer both opt-out HIV testing and available PMTCT (preventing mother-to-child transmission) interventions. (shrink)
One of the most influential scientific treatises in Cauchy's era was J.-L. Lagrange's Mécanique Analytique, the second edition of which came out in 1811, when Cauchy was barely out of his teens. Lagrange opens his treatise with an unequivocal endorsement of infinitesimals. Referring to the system of infinitesimal calculus, Lagrange writes:Lorsqu'on a bien conçu l'esprit de ce système, et qu'on s'est convaincu de l'exactitude de ses résultats par la méthode géométrique des premières et dernières raisons, ou par la méthode analytique (...) des fonctions dérivées, on peut employer les infiniment petits comme un instrument sûr et commode pour abréger et simplifier les demonstrations.Lagrange's renewed enthusiasm for .. (shrink)
This book collects essays from the 2006 and 2007 International Philosophy Colloquia Evian, centred around a central problem in the philosophy of mind: the relationship between the human faculty of sensory experience and the faculty of conceptual reflection, that is self-consciousness. Containing articles by philosophers of eight nationalities, in three languages (English, French, German), and of "analytical" as well as "continental" provenance, it beautifully represents the spirit of the colloquia. Authors include Joshua Andresen (AU Beirut), Valérie Aucouturier (Kent U / (...) U Paris I), Karin de Boer (KU Leuven), Santiago Echeverri (U Genève), Roberto Farneti (LU Bolzano), Tim Henning (JLU Giessen), Felix Koch (Columbia U), Christophe Laudou (Madrid), David Lauer (FU Berlin), Jason Leddington (Bucknell U), Nicolas Monseu (UC Louvain), Soraya Nour (HU Berlin), Hans Bernhard Schmid (U Wien), Henning Tegtmeyer (U Leipzig). (shrink)
Using placebos in day-to-day practice is an ethical problem. This paper summarises the available epidemiological evidence to support this difficult decision. Based on these data we propose to differentiate between placebo and “knowledge framing”. While the use of placebo should be confined to experimental settings in clinical trials, knowledge framing — which is only conceptually different from placebo — is a desired, expected and necessary component of any doctor-patient encounter. Examples from daily practice demonstrate both, the need to investigate the (...) effects of knowledge framing and its impact on ethical, medical, economical and legal decisions. (shrink)
Experience indicates that the questioning and democratic nature of the community of enquiry can be demanding and unsettling for teachers, presenting unaccustomed challenges and moral dilemmas. This paper argues that such significant episodes in the practice of Philosophical with Children (PwC) offer rich opportunities for wider critical reflection on epistemological and pedagogical questions for teacher education and continuing professional development. We illustrate the nature of this ongoing work through noticing and focusing on critical incidents drawn from our lived experience of (...) PwC with learners, students, teachers and fellow practitioners in the UK and in South Africa, identifying common themes and offering an account of their origins. The article proposes a way of developing and refining educational practice through a grounded and collaborative practitioner action research orientation, investigating common themes that emerge from significant events in practice and mirroring the process of PwC itself. We conclude that the recurrent themes we identify show the value of PwC in opening up a transformative critical space in teacher education that disrupts prevalent epistemological frameworks and suggest that a deconstruction of the role of the educator, and the epistemological shift it provokes, is the hub of the project of bringing philosophy into schools and universities, and into the professional development of PwC teacher educators. (shrink)
In an ongoing longitudinal study, which started in 1994, we are examining the moral development of business apprentices (sensu Kohlberg). The focal point of this project is a critical analysis of Kohlberg's thesis of homogeneity, according to which people should judge every moral issue from the point of view of their "modal" stage (i.e. the most frequently used stage of moral reasoning) regardless of any situation-specificity. Empirical data-even Kohlberg's own-however, show that an individual's judgements are usually spread around her/his modal (...) stage. This is not necessarily due to measurement error but may also be interpreted as a situation-specific variation which could be described by the hypothesis of "moral segmentation". In this article we present results on the status of moral development of apprentices in the business context (within different types of situations). Contrary to Kohlberg's theory, our results seem to support the hypothesis of segmentation. The data reflect a great amount of intra-individual variation unaccounted for by the concept of "structured wholeness". (shrink)
