The anonymous treatise De sex inconvenientibus is a good example of the calculatores’ approach when dealing with motion. It is organized around four main questions relating to the determination of rapidity in four kinds of changes, i.e. in the generation of substantial forms, in alteration, in increase, and in local motion. In some arguments the author points out the paradoxes to which the two ways of determining the rapidity of a motion can lead: rapidity is determined by the effect produced (...) (the degree of quality generated, the space covered, etc.) or it results from the ratio between the moving power and the resistance of the mobile or patient. While this twofold approach to determining rapidity appears in the majority of calculator texts, the two points of view – the analysis according to its effects and the analysis according to its causes – have rarely been confronted. (shrink)

La notion de dénomination d’un rapport domine la théorie de la proportionnalité au Moyen Âge et à la Renaissance. Elle apparaît dans des contextes différents, traités d’arithmétique, éditions des Éléments, traités sur la théorie des proportions, etc. L’exposé le plus complet sur cette notion se trouve dans le commentaire de Clavius à la définition 4 du livre V des Éléments d’Euclide. Clavius se fait ici l’écho des travaux de ses prédécesseurs en particulier de Jordanus et de Campanus, mais ne rapporte (...) pas la théorie des rapports irrationnels initiée par Bradwardine et développée par Oresme. (shrink)

Summary The practice of the disputatio in the medieval universities gave rise to a particular literary genre, the questio. This genre is caracterised by the production of arguments in favour of or against the thesis submitted for questio, before the author develops his own answer. This genre is common to philosophy and theology. But to present a mathematical problem in the form of the questio may seem paradoxical since it leads to the production of false proofs. We shall examine three (...) texts of the 14th and 15th centuries in which is raised the question of the incommensurability of the diagonal and the side of a square: Nicole Oresme's Questions on the geometry of Euclid, an anonymous question from a 15th century manuscript and Blasius of Parma's Questions on Thomas Bradwardine's treatise on ratios. We shall establish a relationship between these three texts. We will show how the mathematical content is combined with the literary genre of the questio. We shall particularly concentrate on the false proofs and consider their status. Finally, we shall ask ourselves how these texts are linked with a possible didactic purpose. Résumé La pratique de la «dispute» dans les universités médiévales a donné lieu à un genre littéraire particulier, la Question. Ce genre est caractérisé par la production d'arguments pour ou contre la thèse soumise à questionnement, avant que l'auteur ne développe sa propre réponse. Ce genre est courant en philosophie et en théologie. Mais présenter un problème mathématique sous la forme d'une Question peut sembler paradoxal: cela conduit en effet à la production de démonstrations fausses. Nous examinerons trois textes des xiv e et xv e siècles dans lesquels est posée la question de l'incommensurabilité de la diagonale et du côté d'un même carré: Les questions sur la géométrie d'Euclide de Nicole Oresme, une question anonyme dont le manuscrit est daté du xv e siècle et les Questions sur le traité des rapports de Thomas Bradwardine rédigées par Blaise de Parme. Nous établirons une filiation entre ces trois textes. Nous montrerons comment s'articule le contenu mathématique avec le genre littéraire de la Question. Nous porterons une attention particulière aux démonstrations fausses sur le statut desquelles nous nous interrogerons. Et nous nous demanderons quel lien entretiennent ces textes avec un éventuel enseignement. (shrink)

Summary The practice of the disputatio in the medieval universities gave rise to a particular literary genre, the questio. This genre is caracterised by the production of arguments in favour of or against the thesis submitted for questio, before the author develops his own answer. This genre is common to philosophy and theology. But to present a mathematical problem in the form of the questio may seem paradoxical since it leads to the production of false proofs. We shall examine three (...) texts of the 14th and 15th centuries in which is raised the question of the incommensurability of the diagonal and the side of a square: Nicole Oresme's Questions on the geometry of Euclid, an anonymous question from a 15th century manuscript and Blasius of Parma's Questions on Thomas Bradwardine's treatise on ratios. We shall establish a relationship between these three texts. We will show how the mathematical content is combined with the literary genre of the questio. We shall particularly concentrate on the false proofs and consider their status. Finally, we shall ask ourselves how these texts are linked with a possible didactic purpose. Résumé La pratique de la «dispute» dans les universités médiévales a donné lieu à un genre littéraire particulier, la Question. Ce genre est caractérisé par la production d'arguments pour ou contre la thèse soumise à questionnement, avant que l'auteur ne développe sa propre réponse. Ce genre est courant en philosophie et en théologie. Mais présenter un problème mathématique sous la forme d'une Question peut sembler paradoxal: cela conduit en effet à la production de démonstrations fausses. Nous examinerons trois textes des xiv e et xv e siècles dans lesquels est posée la question de l'incommensurabilité de la diagonale et du côté d'un même carré: Les questions sur la géométrie d'Euclide de Nicole Oresme, une question anonyme dont le manuscrit est daté du xv e siècle et les Questions sur le traité des rapports de Thomas Bradwardine rédigées par Blaise de Parme. Nous établirons une filiation entre ces trois textes. Nous montrerons comment s'articule le contenu mathématique avec le genre littéraire de la Question. Nous porterons une attention particulière aux démonstrations fausses sur le statut desquelles nous nous interrogerons. Et nous nous demanderons quel lien entretiennent ces textes avec un éventuel enseignement. (shrink)

Jan Zwicky suggests that Lyric Philosophy may be read as a “letter to a revered parent—with whom I have quarrelled, but by whom I still wish to be understood.” Though the “parent” thinker to whom she refers is Freud, Zwicky’s conversation with Simone Weil in Wisdom & Metaphor addresses Weil as a “foremother” in the act of making “herself clear to herself.” This paper examines Weil’s role in Wisdom & Metaphor and considers Weil as an influence in Zwicky’s poetry, reading (...) “relinquishing” in Zwicky’s poetry and “decreation” in Weil’s philosophy as metaphors that resonate and debate with each other. (shrink)

A notable aspect of contemporary fiction is the increasing importance acquired by the detective as a literary figure. From World War II up to today he has transcended a narrow role played in a narrow genre to become the symbol for man's existential quest and puzzlement in the face of mystery. If science fiction is the expression of our hopes and fears concerning the future of our technological society, the detective and a new form of literary detective fiction have lately (...) become the expression of our hopes and fears concerning the present, since mystery is not only, too obviously, in the future but, more subtly, in the present. While science fiction lacks a character typical of the genre who may embody and possibly transcend its purposes, the detective novel thanks to the multifold aspects of its “ordainer”—the detective—has progressively risen to literary prominence through the apparently paradoxical negation of its original functions. (shrink)

'A comprehensive and important collection that includes essays by some of the leading figures in the field....Essential reading for anyone interested in risk assessment.' Professor Kristin Shrader-Frechette, University of Notre Dame 'The editors are to be congratulated for bringing together a distinguished international group of theorists to reflect on the issues. This volume will be sure to raise the level of debate while at the same time showing the importance of philosophical reflection in approaches to the problems of the age.' (...) Professor Jonathan Wolff, University College London This volume brings together top authors from the fields of risk, philosophy, social sciences and psychology to address the issue of how we should decide how far technological risks are morally acceptable or not. The underlying principles are examined, along with methodological challenges, public involvement and instruments for democratization. A strong theoretical basis is complemented by a range of case studies from some of the most contentious areas, including medical ethics and GM crops. This book is a vital new resource for researchers, students and anyone concerned that traditional approaches to risk management don't adequately address ethical considerations. (shrink)

“Acceptable Risk” – On the Rationality of Emotional Evaluations of Risk What is “acceptable risk”? That question is appropriate in a number of different contexts, political, social, ethical, and scienti c. Thus the question might be whether the voting public will support a risky proposal or project, whether people will buy or accept a risky product, whether it is morally permissible to pursue this or that potentially harmful venture, or whether it is wise or prudent to test or try out (...) some possibly dangerous hypothesis or product. But complicating all of these queries, the “sand in the machinery” of rational decision-making, are the emotions. It is often noted that voters are swayed by their passions at least as much as they are convinced by rational arguments. And it is obvious to advertisers and retailers that people are seduced by all sorts of appeals to their vanities, their fears, their extravagant hopes, their insecurities. At least one major thread of ethical discourse, the one following Kant, minimizes the importance of the emotions in favor of an emphatically rational decision-making process, and it is worth mulling over the fact that many of those who do not accept Kant’s ethical views more or less applaud his rejection of the “moral sentiment theory” of the time, promoted by such luminary philosophers as David Hume and Adam Smith. (shrink)

Husserl attempted to found logics and language on intuition, and particularly perception. The relationship between logical language and intuition is therefore one of the fundamental themes of his phenomenology. Husserl regarded the two as sharing an isomorphic structure, and this article shows that this structure can be characterized as “mediality.” That is, the “meaning” of language appears by mediation of sound or script, while the “I” as person appears by mediation of the body. I will show furthermore that intuitions themselves (...) appear through the mediation of language, and interpret this idea of mediality in terms of the Japanese language. Guided by Husserl’s notion of Sprachleib, I will also attempt an analysis of the “bodily” function of Chinese script and onomatopeia as aspects of Sprachleib and show how the Sprachleib functions as a “cultural living body” that makes community possible. (shrink)

In Exploring Robotic Minds: Actions, Symbols, and Consciousness as Self-Organizing Dynamic Phenomena, Jun Tani sets out to answer an essential and tantalizing question: How do our minds work? By providing an overview of his "synthetic neurorobotics" project, Tani reveals how symbols and concepts that represent the world can emerge in a neurodynamic structure--iterative interactions between the top-down subjective view, which proactively acts on the world, and the bottom-up recognition of the resultant perceptual reality. He argues that nontrivial problems (...) of consciousness and free will could be addressed through structural understanding of such iterative, conflicting interactions between the top-down and the bottom-up pathways. A wide range of readers will enjoy this wonderful journey of the mind and will follow the author on interdisciplinary discussions that span neuroscience, dynamical systems theories, robotics, and phenomenology. The book also includes many figures, as well as a link to videos of Tani's exciting robotic experiments. (shrink)

Not all countries do their fair share in the effort of preventing dangerous climate change. This presents those who are willing to do their part with the question whether they should 'take up the slack' and try to compensate for the non-compliers' failure to reduce emissions. There is a pro tanto reason for doing so given the human rights violations associated with dangerous climate change. The article focuses on fending off two objections against a duty to take up the slack: (...) that it is unfair and ineffective. We grant that it is unfair if some have to step in for others but argue that this does not amount to a decisive objection under conditions of partial compliance. With regard to the charge of emission reductions being ineffective, we argue that the empirical case for this claim is missing and that even if it were not, there still remains the option of taking up the slack in other forms. (shrink)

Theories of practical reason must meet a psychological requirement: they must explain how normative practical reasons can be motivationally efficacious. It would be pointless to claim that we are subject to normative demands of reason, if we were in fact unable to meet those demands. Concerning this requirement to account for the possibility of rational motivation, internalist approaches are distinguished from externalist ones. I defend internalism, whilst rejecting both ways in which the belief‐desire model can be instantiated. Both the Humean (...) and the Kantian instantiation of that model fail to account for the internal connection between normative and motivating reasons required by internalism. The two classes of reasons rather come to be seen as mutually exclusive. Opposing the belief‐desire model, I argue that rational motivation can only be established by reference to emotion. Emotions are affective perceptions. They have motivational force so that they can contribute to the explanation of action. At the same time they can rationalise actions because they have an intentional content which resembles the content of sensory perception in being representational. Because of this, the emotions can noninferentially justify judgements, which in turn can justify actions. I conclude by outlining the Aristotelian account of practical reason and ethics that emerges from integrating the emotions into practical reasoning. Doing the right thing is much more a matter of seeing things right than of drawing the right inferences. Seeing things right, in its turn, is not only to justify an action: it necessarily implies to be motivated to act accordingly. (shrink)

Research questions and backgroundThis study explores a highly controversial issue of medical care in Germany: the decision to withhold or withdraw mechanical ventilation in critically ill patients. It analyzes difficulties in making these decisions and the physicians’ uncertainty in understanding the German terminology of Sterbehilfe, which is used in the context of treatment limitation. Used in everyday language, the word Sterbehilfe carries connotations such as helping the patient in the dying process or helping the patient to enter the dying process. (...) Yet, in the legal and ethical discourse Sterbehilfe indicates several concepts: (1) treatment limitation, i.e., withholding or withdrawing life-sustaining treatment (passive Sterbehilfe), (2) the use of medication for symptom control while taking into account the risk of hastening the patient’s death (indirekte Sterbehilfe), and (3) measures to deliberately terminate the patient’s life (aktive Sterbehilfe). The terminology of Sterbehilfe has been criticized for being too complex and misleading, particularly for practical purposes. Materials and methods An exploratory study based on qualitative interviews was conducted with 28 physicians from nine medical intensive care units in tertiary care hospitals in the German federal state of Baden-Wuerttemberg. The method of data collection was a problem-centered, semi-structured interview using two authentic clinical case examples. In order to shed light on the relation between the physicians’ concepts and the ethical and legal frames of reference, we analyzed their way of using the terms passive and aktive Sterbehilfe. Results Generally, the physicians were more hesitant in making decisions to withdraw rather than withhold mechanical ventilation. Almost half of them assumed a categorical prohibition to withdraw any mechanical ventilation and more than one third felt that treatment ought not to be withdrawn at all. Physicians showed specific uncertainty about classifying the withdrawal of mechanical ventilation as passive Sterbehilfe, and had difficulties understanding that terminating ventilation is not basically illegal, but the permissibility of withdrawal depends on the situation. Conclusions The physicians’ knowledge and skills in interpreting clinical ethical dilemmas require specific improvement on the one hand; on the other hand, the terms passive and aktive Sterbehilfe are less clear than desirable and not as easy to use in clinical practice. Fear of making unjustified or illegal decisions may motivate physicians to continue (even futile) treatment. Physicians strongly opt for more open discussion about end-of-life care to allow for discontinuation of futile treatment and to reduce conflict. (shrink)

Research questions and backgroundThis study explores a highly controversial issue of medical care in Germany: the decision to withhold or withdraw mechanical ventilation in critically ill patients. It analyzes difficulties in making these decisions and the physicians’ uncertainty in understanding the German terminology of Sterbehilfe, which is used in the context of treatment limitation. Used in everyday language, the word Sterbehilfe carries connotations such as helping the patient in the dying process or helping the patient to enter the dying process. (...) Yet, in the legal and ethical discourse Sterbehilfe indicates several concepts: (1) treatment limitation, i.e., withholding or withdrawing life-sustaining treatment (passive Sterbehilfe), (2) the use of medication for symptom control while taking into account the risk of hastening the patient’s death (indirekte Sterbehilfe), and (3) measures to deliberately terminate the patient’s life (aktive Sterbehilfe). The terminology of Sterbehilfe has been criticized for being too complex and misleading, particularly for practical purposes. Materials and methods An exploratory study based on qualitative interviews was conducted with 28 physicians from nine medical intensive care units in tertiary care hospitals in the German federal state of Baden-Wuerttemberg. The method of data collection was a problem-centered, semi-structured interview using two authentic clinical case examples. In order to shed light on the relation between the physicians’ concepts and the ethical and legal frames of reference, we analyzed their way of using the terms passive and aktive Sterbehilfe. Results Generally, the physicians were more hesitant in making decisions to withdraw rather than withhold mechanical ventilation. Almost half of them assumed a categorical prohibition to withdraw any mechanical ventilation and more than one third felt that treatment ought not to be withdrawn at all. Physicians showed specific uncertainty about classifying the withdrawal of mechanical ventilation as passive Sterbehilfe, and had difficulties understanding that terminating ventilation is not basically illegal, but the permissibility of withdrawal depends on the situation. Conclusions The physicians’ knowledge and skills in interpreting clinical ethical dilemmas require specific improvement on the one hand; on the other hand, the terms passive and aktive Sterbehilfe are less clear than desirable and not as easy to use in clinical practice. Fear of making unjustified or illegal decisions may motivate physicians to continue (even futile) treatment. Physicians strongly opt for more open discussion about end-of-life care to allow for discontinuation of futile treatment and to reduce conflict. (shrink)

I discuss two ways in which emotions explain actions: in the first, the explanation is expressive; in the second, the action is not only explained but also rationalized by the emotion's intentional content. The belief-desire model cannot satisfactorily account for either of these cases. My main purpose is to show that the emotions constitute an irreducible category in the explanation of action, to be understood by analogy with perception. Emotions are affective perceptions. Their affect gives them motivational force, and they (...) can rationalize actions because, like perception, they have a representational intentional content. Because of this, an emotion can non-inferentially justify a belief which in its turn justifies or rationalizes an action; so emotions may constitute a source of moral knowledge. (shrink)

Das Buch analysiert aus unterschiedlichen Perspektiven die Frage nach dem Subjekt in der feministischen Erkenntnistheorie.

Im Mittelpunkt des Buchs steht die Frage, wie heute menschliches Leben im Medium des Unternehmens als geschöpfliches Leben erscheinen kann. Hierfür dienen neben biblischen Zeugnissen, Texten Martin Luthers und Arthur Richs sowie kirchlichen Schriften auch die ökonomischen Ethik-Theorien von Karl Homann, Peter Ulrich und Josef Wieland als Bezugspunkte. Außerdem werden exemplarisch die unternehmensethischen Profile dreier Firmen betrachtet. Die daraus gewonnenen Impulse für eine explorative Ethik geschöpflichen Lebens sind letztlich immer in der Unternehmenspraxis zu erproben, müssen sie sich doch im Unternehmensalltag (...) als tragfähig erweisen. (shrink)