The illumination of African philosophy offered in this volume leads to the illumination of philosophy in general. Illuminating arises as an essential task of philosophy, whether African or not. What is illuminated is not already there, but is constituted at the moment of illumination. This book invites the reader to participate in the illuminating work of philosophy and necessarily, thereby, to contribute to his or her own self-constituting self-illumination. Although the focus is on African philosophy, (...) the book also bridges the gap between African philosophy and other branches. Today more than ever, a bridging philosophy is called for, and this book helps to meet that need. This book poses philosophical questions such as who is an African and what Africa is, and seeks philosophical answers. In doing so, it contributes to the ongoing discourse on African philosophy. It addresses such issues as the African grounding of philosophy, the difference between African and Black philosophy, the African body, African art as expressed in and by Chiwara, the plight of African trees as the plight of Africans, and the symbolic meaning of Robben Island. (shrink)

In A Climate of History Dipesh Chakrabarty locates Kant’s speculative reading of Genesis as “the Enduring Fable” furnishing the background for human domination and earthly destruction. Writing from the fable’s “ruins,” Chakrabarty urges the elaboration of new fables that provide the background ethics and meanings required to recast relations between humans and the natural world. Responding to Chakrabarty’s challenge, we outline two “fables” based first in the oft ignored Genesis 2, and second, in Matauranga Māori. Although marginalised, these extant fables (...) provide the imaginary for radically other ways of being human in a more-than-human world in turmoil. (shrink)

Hegel’s view of India is famously negative, and postcolonial scholarship has been largely dominated by a view of Hegel as little more than a chauvinist. This paper argues that this interpretation is one-sided and overly simplistic. Most approaches to Hegel on India focus on the well-known lectures on the philosophy of history, imposing an overly teleological reading upon Hegel’s view of cultural difference. In contrast, I demonstrate the ambiguity of Hegel’s conception of India through a close reading of Hegel’s little-known (...) essay on the Bhagavad-Gītā (Über die unter dem Namen Bhagavad-Gita bekannte Episode des Mahabharata von Wilhelm von Humboldt). Hegel believed that the Bhagavad-Gītā was India’s paradigmatic text, and he used this essay as a platform for discussing Indian thought in general. In distinction to Bradley Herling’s interpretation of the Gītā essay, I contend that here Hegel has an unexpectedly positive view of Indian thought, but only insofar as it appears to reflect his own. (shrink)

Analysis of Emmy Noether’s 1918 theorems provides an illuminating method for testing the consequences of “coordinate generality”, and for exploring what else must be added to this requirement in order to give general covariance its far-reaching physical significance. The discussion takes us through Noether’s first and second theorems, and then a third related theorem due originally to F. Klein. Contact will also be made with the contributions of, principally, J.L. Anderson, A. Trautman, P.A.M. Dirac, R. Torretti and the father (...) of the whole business, A. Einstein (an apparent shift in Einstein’s thinking on the significance of general covariance between 1916 and 1918 is highlighted). (shrink)

Analysis of Emmy Noether's 1918 theorems provides an illuminating method for testing the consequences of coordinate generality, and for exploring what else must be added to this requirement in order to give general covariance its far-reaching physical significance. The discussion takes us through Noether's first and second theorems, and then a third related theorem due originally to F. Klein. Contact will also be made with the contributions of, principally, J.L. Anderson, A. Trautman, P.A.M. Dirac, R. Torretti and the father (...) of the whole business, A. Einstein. (shrink)

We examine two connectionist networks—a fractal learning neural network (FLNN) and a Simple Recurrent Network (SRN)—that are trained to process center-embedded symbol sequences. Previous work provides evidence that connectionist networks trained on infinite-state languages tend to form fractal encodings. Most such work focuses on simple counting recursion cases (e.g., anbn), which are not comparable to the complex recursive patterns seen in natural language syntax. Here, we consider exponential state growth cases (including mirror recursion), describe a new training scheme that seems (...) to facilitate learning, and note that the connectionist learning of these cases has a continuous metamorphosis property that looks very different from what is achievable with symbolic encodings. We identify a property—ragged progressive generalization—which helps make this difference clearer. We suggest two conclusions. First, the fractal analysis of these more complex learning cases reveals the possibility of comparing connectionist networks and symbolic models of grammatical structure in a principled way—this helps remove the black box character of connectionist networks and indicates how the theory they support is different from symbolic approaches. Second, the findings indicate the value of future, linked mathematical and empirical work on these models—something that is more possible now than it was 10 years ago. (shrink)

Thoughts and theoretical reflections about “governance” in Islamic society, whether theorizing about the desired structure of government or describing the characteristics of an ideal ruler, is one of the most important topics studied in the field of political thought and philosophy in Islam, to which great names such as Farabi, etc. are connected. In this context, this research, through a comparative approach, seeks to examine and analyze the views of Farabi and Sohrawardi about the ideal ruler from the perspective of (...) a judicial approach. Based on such an approach, a philosopher like Farabi considers the different ways of connecting to the active intellect as the separation of the theoretical intellect from matter and the connection to the active intellect, and a divine sage like Sohrawardi also speaks of the separation of the theoretical intellect and the separation of the power of imagination, which is manifested in a prophet. In the eyes of both thinkers, human reason has the ability to overcome material existence. This type of excellence is a condition for achieving complete metaphysical knowledge and theoretical perfection. The ultimate happiness is the achievement of the active intellect. “The Absolute First Leader” and “Quṭb (Imam or pole)” have both achieved this position. Introduction The ideal government and ruler, in the system of Islamic philosophy, are based on the approach of philosophers to wisdom and their opinions and ruling foundations. The philosophers’ approach to wisdom and intellect in the system of Islamic philosophy has changed and developed from Farabi to Sohrawardi and later. Based on this change in the method and approach to wisdom of the sages, philosophical issues and topics including the issue of government and the ideal ruler, have also undergone changes and transformations. Despite the significant evolution of Islamic philosophy in the two Peripatetic and Illuminative systems, it seems that the ideal ruler in Sohrawardi’s philosophy, which he refers to as “the pole/Imam (quṭb),” is compatible with the first leader of al-Farabi’s utopia. The problem of this research is to investigate the characteristic features of “Qutb” and “First Leader/Philosopher” in the Peripatetic and Illuminative systems of philosophy based on Sohrawardi and Farabi’s approach to wisdom and its types. “Qutb” in Sohrawardi’s thought In the wisdom of enlightenment, the perfect human being and the “Qutb” to whom the position of caliph belongs, is perfect in intuitive and argumentative wisdom, and in other words, he is both adept in reflection and adept in discussion. In Sohrawardi’s thought, the rulers must know wisdom as well be practical wayfarers, that is, they must possess a combination of theoretical and practical wisdom. On the one hand, Sohrawardi’s theory is influenced and consistent with Plato’s theory, both of which emphasize the “ruling sage,” and on the other hand, it is influenced by the Iranian tradition and the benefit of the ideal kings from wisdom and intellect, and “Khurra-yi Kiani”1 and the approval of God, which is in the interpretation Religious and close to Sufism and Shiism, it is interpreted as Qutb and divine sage. A Qutb or an Imam is one who is connected with the active intellect, receives grace from the higher realm, and spreads goodness, prosperity, knowledge, justice, and virtue among religions with a divine plan. “The First Leader” in Farabi’s thought The First Leader is someone who does not need the guidance of another human being; rather, all sciences and knowledge are obtained by him in esse and he is able to infer appropriate actions and behavior from general reasoning. He can also best guide others to perform these meritorious deeds; the same actions and actions that bring a person to happiness. These abilities are realized in people of great and outstanding nature by connecting to the active intellect. Such a person, in fact, in the eyes of the ancients, is a king and ruler and worthy of revelation. The rule of such a person is the first rule and his leadership is the first leadership, and the rule of others that is through his rule will be the subordinate rule, and people under the rule of this leader and leader are virtuous people, the chosen ones, and the fortunate ones. Conclusion In examining and comparing the two viewpoints, it should be said that a philosopher like Farabi considers the different ways of connecting to the active intellect to be the separation of the theoretical intellect from matter and the connection to the active intellect, and a Godly sage like Sohrawardi also speaks of the separation of the theoretical intellect and the power of imagination, which manifests itself in a prophet, where we witness detachment from matter and the ability to remove the soul from the body. In the eyes of both thinkers, human reason has the ability to overcome material existence. This type of excellence is a condition for achieving complete metaphysical knowledge and theoretical perfection. The ultimate happiness is the achievement of the active intellect.”First Leader”and “Qutb” have both achieved this position. Based on this, the complete transcendence of material existence is possible for certain people. (shrink)

Richard Peters argued for a general education based largely on the study of truth-seeking subjects for its own sake. His arguments have long been acknowledged as problematic. There are also difficulties with Paul Hirst's arguments for a liberal education, which in part overlap with Peters'. Where justification fails, can historical explanation illuminate? Peters was influenced by the prevailing idea that a secondary education should be based on traditional, largely knowledge-orientated subjects, pursued for intrinsic as well as practical ends. Does (...) history reveal good reasons for this view? The view itself has roots going back to the 16th century and the educational tradition of radical Protestantism. Religious arguments to do with restoring the image of an omniscient God in man made good sense, within their own terms, of an encyclopaedic approach to education. As these faded in prominence after 1800, old curricular patterns persisted in the drive for ‘middle-class schools’, and new, less plausible justifications grew in salience. These were based first on faculty psychology and later on the psychology of individual differences. The essay relates the views of Peters and Hirst to these historical arguments, asking how far their writings show traces of the religious argument mentioned, and how their views on education and the development of mind relate to the psychological arguments. (shrink)

In step with rapid advancements in computer vision, vehicle classification demonstrates a considerable potential to reshape intelligent transportation systems. In the last couple of decades, image processing and pattern recognition-based vehicle classification systems have been used to improve the effectiveness of automated highway toll collection and traffic monitoring systems. However, these methods are trained on limited handcrafted features extracted from small datasets, which do not cater the real-time road traffic conditions. Deep learning-based classification systems have been proposed to incorporate the (...) above-mentioned issues in traditional methods. However, convolutional neural networks require piles of data including noise, weather, and illumination factors to ensure robustness in real-time applications. Moreover, there is no generalized dataset available to validate the efficacy of vehicle classification systems. To overcome these issues, we propose a convolutional neural network-based vehicle classification system to improve robustness of vehicle classification in real-time applications. We present a vehicle dataset comprising of 10,000 images categorized into six-common vehicle classes considering adverse illuminous conditions to achieve robustness in real-time vehicle classification systems. Initially, pretrained AlexNet, GoogleNet, Inception-v3, VGG, and ResNet are fine-tuned on self-constructed vehicle dataset to evaluate their performance in terms of accuracy and convergence. Based on better performance, ResNet architecture is further improved by adding a new classification block in the network. To ensure generalization, we fine-tuned the network on the public VeRi dataset containing 50,000 images, which have been categorized into six vehicle classes. Finally, a comparison study has been carried out between the proposed and existing vehicle classification methods to evaluate the effectiveness of the proposed vehicle classification system. Consequently, our proposed system achieved 99.68%, 99.65%, and 99.56% accuracy, precision, and F1-score on our self-constructed dataset. (shrink)

Two central accounts of human cognition emerge over the course of the Middle Ages: the theory of divine illumination and an Aristotelian theory centered on abstraction from sense data. Typically, these two accounts are seen as competing views of the origins of human knowledge; theories of divine illumination focus on God’s direct intervention in our epistemic lives, whereas Aristotelian theories generally claim that our knowledge derives primarily (or even entirely) from sense perception. In this paper, I address an (...) early attempt to reconcile these two accounts—namely, Robert Grosseteste’s commentary on Aristotle’s Posterior Analytics—and I argue that Grosseteste’s efforts to bring Aristotle’s account of human cognition into harmony with a theory of divine illumination proves both philosophically interesting and largely successful. Grosseteste’s claim that God does not directly illumine our intellects in this life opens his theory to the worry that Grosseteste leaves the divine out of his theory of divine illumination in the CPA. Steven Marrone, for example, holds that Grosseteste’s Aristotelian focus in this work causes him to abandon the theory of divine illumination he advocated in the earlier De veritate in favor of a modified theory of “human” illumination. I argue in contrast that Grosseteste does give God a role in human knowledge in the CPA—a role that allows human beings to remain largely responsible for the acquisition of knowledge while still requiring God’s illumination for actual cognition. In short, I conclude that, although human bodies interfere with God’s direct illumination of our intellects, God nevertheless plays a crucial ideogenic role in human cognition by illuminating the objects of our intellection and making them intelligible to us. (shrink)

Par-dela les limites de la methode experimentale, tributaire des sens exterieurs, se deploie une experience toute spirituelle du monde suprasensible, royaume des choses morales et substances incorporelles, ainsi que du monde surnaturel, celui des arcanes de la grace et de la gloire. Meme dans le domaine des choses corporelles, ou l'experience sensible reste imparfaite, cette experience mystique qu'est l'illumination interieure est necessaire pour suppleer a l'insuffisance de l'experience des sens, simplement humaine et philosophique. Roger Bacon nous apparait a travers (...) cet ouvrage comme mystique, mais aussi comme humaniste et savant: cette harmonie dans sa personne n'est pas sans repondre a l'harmonie des choses ou le surnaturel s'ajoute a la nature pour la parfaire, puisque apres tout ces deux facons de connaitre le Createur et la creature peuvent bien eter la double manifestation d'un seul et meme gout imperieux pour l'experience. Roger Bacon peut bien s'eprnedre des donnees de la nature et des idees de la litterature profane sans pour autant se dejuger: s'il est vrai que c'est le meme Dieu qui a fait la Nature et l'Ecriture, c'est le meme Dieu qui nous illumine de l'illumination generale dans l'experience physique et de l'illumination interieure dans l'experience mystique. (shrink)

An image of a face depends not only on its shape, but also on the viewpoint, illumination conditions, and facial expression. A face recognition system must overcome the changes in face appearance induced by these factors. This paper investigate two related questions: the capacity of the human visual system to generalize the recognition of faces to novel images, and the level at which this generalization occurs. We approach this problems by comparing the identi cation and generalization capacity for upright (...) and inverted faces. For upright faces, we found remarkably good generalization to novel conditions. For inverted faces, the generalization to novel views was signi cantly worse for both new illumination and viewpoint, although the performance on the training images was similar to the upright condition. Our results indicate that at least some of the processes that support generalization across viewpoint and illumination are neither universal (because subjects did not generalize as easily for inverted faces as for upright ones), nor strictly objectspeci c (because in upright faces nearly perfect generalization was possible from a single view, by itself insu cient for building a complete object-speci c model). We propose that generalization in face recognition occurs at an intermediate level that is applicable to a class of objects, and that at this level upright and inverted faces initially constitute distinct object classes. (shrink)

n his Lectures on the Histmy 0f Philosophy Hegel credits Rousseau with an cpoch-making innovation in the realm 0f practical philosophy, an innovation said to consist in thc fact that Rousseau is thc first thinker t0 recognize "the free will" as thc fundamental principle 0f political philosophy} Since Hcgcl’s 0wn practical philosophy is explicitly grounded in an account 0f thc will and its freedom, Hcgcl’s assertion is clearly intended as an acknowledgment 0f his deep indebtedness t0 R0usscau’s social and political (...) thought. What is not s0 clear, however, is how this indebtedness is t0 bc understood: What precisely docs it mean t0 say that the political theories 0f Hegel and Rousseau share the same first principlc? In this paper I intend t0 follow up 0n this interpretive suggestion 0f Hcgcl’s by claborating, much more explicitly than he himself docs, thc sense in which R0usscau’s political thought is founded 011 thc principle 0f the "frcc wiil." While accomplishing this task will put us in a better position t0 clarify thc obscurc philosophical strategy behind Hcgcl’s 0wn social theory, my primary interest here is t0 illuminate thc foundations 0f R0usscau’s political thought, especially its account 0f the connection between freedom and the general will. I argue that it is necessary t0 distinguish two ways in which Rousseau takes the general will t0 secure, or realize, thc freedom of individual citizens, namely, by functioning as an embodiment as well as a precondition of such freedom. Understanding both 0f these points will lead us t0 scc: that R0usscau’s thought rests 0n two distinct, though not incompatible, accounts 0f how citizens whose actions are constrained by thc general will are in fact subject 0nly to their 0wn wills and therefore free in their 0bcdience to thc general will. As we shall scc, these two accounts arc implicitly based upon distinct conceptions 0f political freedom. (shrink)

While research on question–answer sequences has yielded important insights into the structures of responses and the actions they implement, the advising literature has illuminated how advice-giving may be resisted or avoided in certain institutional contexts. In this study, we examine the audio-recorded Q&A sections of applicant webinars delivered by a major philanthropic foundation in the United States, with a particular focus on the foundation representatives’ complex responses to audience members’ yes–no questions that seek specificity. Within a conversation analytic framework, we (...) show how the practice of going general is engaged to manage the demands of being helpful to the individual questioner without appearing to guarantee a particular outcome while foregrounding the foundation’s principles and priorities for the broader audience. Findings of this study may be useful for formulating recommendations for foundation representatives tasked with communicating effectively with potential grantees. (shrink)

The first doctrine Peckham mentions as being under attack is of undoubtedly the TDI, according to which human beings are illuminated by "the unchangeable light" so as to attain the "eternal rules." This language of light and illumination is of course most closely associated with Augustine, but it permeates the entire Christian medieval tradition. Until Aquinas's time the TDI had played a prominent role in all the most influential medieval theories of knowledge, including those of Anselm, Albert the Great, (...) Roger Bacon, and, especially, Bonaventure. However, by the beginning of the fourteenth century the theory had fallen out of fashion. Indeed, the three best philosophers of the scholastic period--Aquinas, John Duns Scotus, and William Ockham--would all reject the theory in its standard form. Even by 1285 supporters of the TDI such as Peckham were evidently feeling rather defensive. It seems entirely plausible to attribute this attitude, in large part, to the influence of Aquinas's views on human knowledge. (shrink)

The statistical structure of a class of objects such as human faces can be exploited to recognize familiar faces from novel viewpoints and under variable illumination conditions. We present computational and psychophysical data concerning the extent to which class-based learning transfers or generalizes within the class of faces. We rst examine the computational prerequisite for generalization across views of novel faces, namely, the similarity of di erent faces to each other. We next describe two computational models which exploit the (...) similarity structure of the class of faces. The performance of these models constrains hypotheses about the nature of face representation in human vision, and supports the notion that human face processing operates in a class-based fashion. Finally, we relate the computational data to well-established ndings in the human memory literature concerning the relationship between the typicality and recognizability of faces. (shrink)

This paper suggests that Lenski's classification of agrarian societies into simple versus advanced, based on the use of iron in the latter, obscures important variations in the gender division of labor and the level of gender stratification. In particular, his categories lump the gender egalitarian irrigated rice societies of Southeast Asia with the great majority of agrarian societies, which are strongly patriarchal. Based on my general theory of gender stratification and experience coding and analyzing gender stratification in the ethnographic (...) databases and fieldwork in 39 countries worldwide, I propose a three-category alternative. First, agrarian societies are divided according to the technological criterion of irrigation into dry (rain-fed) and wet (irrigated rice) categories. This distinguishes two gender divisions of labor: a male farming system in dry agrarian and an "everybody works" system in labor-intensive rice cultivation, in which women are important in production. Second, irrigated rice societies are divided into patri-oriented-male advantage and those neutral to positive for women, based on the nature of the kinship system. This distinguishes the gender egalitarian Southeast Asian wet rice societies from the highly gender stratified majority of irrigated rice societies. Furthermore, these distinctions in gender equality are predicted by my gender stratification theory. (shrink)

Full proofs of the Gödel incompleteness theorems are highly intricate affairs. Much of the intricacy lies in the details of setting up and checking the properties of a coding system representing the syntax of an object language (typically, that of arithmetic) within that same language. These details are seldom illuminating and tend to obscure the core of the argument. For this reason a number of efforts have been made to present the essentials of the proofs of Gödel’s theorems without getting (...) mired in syntactic or computational details. One of the most important of these efforts was made by Löb [8] in connection with his analysis of sentences asserting their own provability. Löb formulated three conditions (now known as the Hilbert-Bernays-Löb derivability conditions), on the provability predicate in a formal system which are jointly sufficient to yield the Gödel’s second incompleteness theorem for it. A key role in Löb’s analysis is played by (a special case of) what later became known as the diagonalization or fixed point property of formal systems, a property which had already, in essence, been exploited by Gödel in his original proofs of the incompleteness theorems. The fixed point property plays a central role in Lawvere’s [7] category-theoretic account of incompleteness phenomena (see also [10]). Incompleteness theorems have also been subjected to intensive investigation within the framework of modal logic (see, e.g.[4], [5]). In this formulation the modal operator takes up the role previously played by the provability predicate, and the derivability conditions on the latter are translated into algebraic conditions (the so-called GL, i.e., Gödel–Löb, conditions) on the former. My purpose here is to present a framework for incompleteness phenomena, fully compatible with intuitionistic or constructive principles, in which the idea of a coding system is retained, only in a 2 simple, but very general form, a form wholly free of syntactical notions. As codes we shall take the elements of an arbitrary given nonempty set, possibly, but not necessarily, the set of natural numbers.. (shrink)

This essay delineates points of agreement and disagreement between Plato and Nietzsche with respect to the original Heraclitean argument that the underlying dynamic connective structure of the whole is ‘strife’. Also discussed is the issue of how each philosopher understands life itself, as a general process, to be related to the wider processive whole. The paper analyses how the Heraclitean understanding of the natural whole influences each philosopher's interpretation of the political structures of man. The analysis attempts to demonstrate (...) why for Nietzsche, on one hand, the value forms of the traditional polis are more in accord with human nature and nature in toto than is philosophy and why for Plato, on the other hand, when the value forms of the polis are superseded by those of philosophy it is a natural process rather than contrary to nature. (shrink)

This paper develops some respects in which the philosophy of mathematics can fruitfully be informed by mathematical practice, through examining Frege's Grundlagen in its historical setting. The first sections of the paper are devoted to elaborating some aspects of nineteenth century mathematics which informed Frege's early work. (These events are of considerable philosophical significance even apart from the connection with Frege.) In the middle sections, some minor themes of Grundlagen are developed: the relationship Frege envisions between arithmetic and geometry and (...) the way in which the study of reasoning is to illuminate this. In the final section, it is argued that the sorts of issues Frege attempted to address concerning the character of mathematical reasoning are still in need of a satisfying answer. (shrink)

Full proofs of the Gödel incompleteness theorems are highly intricate affairs. Much of the intricacy lies in the details of setting up and checking the properties of a coding system representing the syntax of an object language within that same language. These details are seldom illuminating and tend to obscure the core of the argument. For this reason a number of efforts have been made to present the essentials of the proofs of Gödel's theorems without getting mired in syntactic or (...) computational details. One of the most important of these efforts was made by Löb [8] in connection with his analysis of sentences asserting their own provability. Löb formulated three conditions, on the provability predicate in a formal system which are jointly sufficient to yield the Gödel's second incompleteness theorem for it. A key role in Löb's analysis is played by what later became known as the diagonalization or fixed point property of formal systems, a property which had already, in essence, been exploited by Gödel in his original proofs of the incompleteness theorems. The fixed point property plays a central role in Lawvere's [7] category-theoretic account of incompleteness phenomena. (shrink)

The CoVid-19 pandemic has profoundly disrupted schooling and education more generally through the shift from face to face teaching in classrooms and lecture theatres to an online mode of teaching a...

En Turquie la philosophie des Lumieres est congue comme un courant de pensee qui rayonne et eclaircit le processus de la creation de la Turquie moderne. Cette philosophie a contribue par ailleurs au developpement de la Turquie dans la voie de modernisation. Tous ceux qui ont lutte pour F independance du pays, notamment Mustafa Kemal Atatürk etaient profondement influences de la philosophie des Lumieres, Le fondateur de la Republique Turque et ses amis avaient tres bien saisie la grande importance d'adopter (...) les principes de cette philosophie pour mener ä bien les reformes republicaines. En Turquie, la plupart des specialistes de la philosophie ont fait des recherches approfondies en la matiere et ils ont mis F accent sur les rapports qui existent entre les problemes sociaux et la philosophie des Lumieres. Par consequent, il n'est point errone de parier de l'existence d'une tradition des Lumieres en Turquie. (shrink)

Explanation is a central concept in human psychology. Drawing upon philosophical theories of explanation, psychologists have recently begun to examine the relationship between explanation, probability and causality. Our study advances this growing literature in the intersection of psychology and philosophy of science by systematically investigating how judgments of explanatory power are affected by the prior credibility of a potential explanation, the causal framing used to describe the explanation, the generalizability of the explanation, and its statistical relevance for the evidence. Collectively, (...) the results of our five experiments support the hypothesis that the prior credibility of a causal explanation plays a central role in explanatory reasoning: first, because of the presence of strong main effects on judgments of explanatory power, and second, because of the gate-keeping role it has for other factors. Highly credible explanations were not susceptible to causal framing effects. Instead, highly credible hypotheses were sensitive to the effects of factors which are usually considered relevant from a normative point of view: the generalizability of an explanation, and its statistical relevance for the evidence. These results advance current literature in the philosophy and psychology of explanation in three ways. First, they yield a more nuanced understanding of the determinants of judgments of explanatory power, and the interaction between these factors. Second, they illuminate the close relationship between prior beliefs and explanatory power. Third, they clarify the relationship between abductive and probabilistic reasoning. (shrink)

This paper examines a dilemma in reproductive and population ethics that can illuminate broader questions in axiology and normative ethics. This dilemma emerges because most people have conflicting intuitions concerning whether the interests of non-existent beings can outweigh the interests of existing beings when those merely potential beings are expected to have overall net-good or overall net-bad lives. The paper claims that the standard approach to this issue, in terms of exemplifying the conflict between Narrow Person-Affecting Views and Impersonal Views, (...) is not correct. It argues that, instead, we can approach the issue through the distinction between Symmetrical and Asymmetrical Views about the relative importance of positive and negative value. The paper also claims that Asymmetrical Views provide the most intuitively satisfactory solution to the dilemma and can in addition be defended independently on further grounds. Keywords: person-affecting views, impersonal views, symmetry, asymmetry. (shrink)

Le général André Bach dans une réflexion sur l’« horizon de mort dans la violence de guerre » part d’une approche anthropologique du phénomène de violence et de la peur (quasiment biologique) qu’il engendre en soulignant les difficultés des sociétés occidentales à penser la mort. C’est l’État qui donne à la guerre un sens politique et sacré et qui crée les catégories fonctionnelles de la guerre (les concepts de paix et de guerre ne sont pas en eux-mêmes opérationnels). Dans le (...) cadre d’une réflexion clausewitzienne sur la montée aux extrêmes, l’« extrême » pour le soldat est toujours sa propre mort (plus que celle de l’ennemi). Les notions de barbarisation et humanisation ne peuvent en ce sens rendre compte de la violence et de la peur radicales présentes dans toute guerre où le rôle du commandement est toujours de mettre en œuvre un degré de violence supérieur à celui de l’adversaire, sans aucune considération de « proportionnalité » de cette violence. La mise à distance technique ne diminue pas la violence mais l’augmente à proportion de l’éloignement de la peur. Seul le politique peut et doit mettre des limites à cette violence militaire par nature illimitée. La modernisation des armes ne relève jamais d’une humanisation du combat mais d’une recherche d’une violence plus efficace. L’entraînement du soldat en temps de paix n’est jamais entraînement à la violence mais apprentissage de savoir-faire et effort de constitution d’un groupe soudé, doté d’un bon moral. L’ordre et la formation tentent de limiter la sauvagerie mais il existe une constitution endogène de comportements propres au soldat, que la hiérarchie tente de canaliser dans une symbolique guerrière fondée sur le sentiment de l’honneur (destiné à compenser la peur d’être une proie vouée à mourir et à faire préférer la lutte au coude à coude sur l’instinct de conservation). Le couple violence/honneur fait que l’armée dépourvue de contrat social n’est pas soluble dans le politique (aujourd’hui dans les écoles militaires on ne parle plus d’« honneur » mais d’« éthique »…, mais pour dire la même chose). La conscription fut une rupture de la logique endogène de l’armée et introduisit une brèche dans ce système archaïque. Mais religion (au Moyen Âge) ou logique démocratique (de nos jours) s’avèrent surtout des « béquilles idéologiques » qui, en définitive, sont souvent plus efficaces pour accroître la barbarisation que pour l’éviter (exemple de la colonisation algérienne où une armée de paix, fonctionnarisée et rigoureusement canalisée, appartenant à une génération n’ayant jamais connu de violence de guerre, développe des massacres de masse). (shrink)

In the range of his intellectual interests and the profundity of his mathematical thought Hermann Weyl towered above his contemporaries, many of whom viewed him with awe. This volume, the most ambitious study to date of Weyl's singular contributions to mathematics, physics, and philosophy, looks at the man and his work from a variety of perspectives, though its gaze remains fairly steadily fixed on Weyl the geometer and space‐time theorist. Structurally, the book falls into two parts, described in the (...) class='Hi'>general introduction by the editor: Part 1 contains four essays on particular aspects of Weyl's work, highlighting ideas he developed in various editions of his classic Raum‐Zeit‐Materie. Part 2 presents a lengthy study by Robert Coleman and Herbert Korté covering nearly the whole gamut of Weyl's mathematical research, an impressive feat. Both in the introduction as well as in footnotes to the articles Erhard Scholz's editorial voice chimes in discreetly, helping tie all five studies together.Coleman and Korté begin chronologically with Weyl's early work in analysis and the modern theory of Riemann surfaces before turning to differential geometry, unified field theory, and the space problem, a topic they use as a springboard for a discussion of their own recent work on the foundations of space‐time. They then take up Weyl's shift to group representation theory and its applications to quantum mechanics, ending with his much earlier research on the structure of the continuum. All of these topics are well handled, but the authors' own agendas coupled with their penchant for overlooking chronology in order to package Weyl's work into neat little bundles leave one feeling rather stranded and far removed from the sources of Weyl's inspiration. Moreover, the narrative style makes this part of the volume read like a technical appendix, albeit a most informative one. Readers who tackle Scholz's far more contextualized essay will be amply rewarded by comparing his views with the opinions set forth by Coleman and Korté in Part 2.Scholz gives a masterful account of Weyl's intellectual journeys from 1917 to 1925 in a study that serves as a fulcrum for the entire volume. Drawing on a number of recently published studies, including his own, on the interplay between mathematics and physics inspired by Einstein's theory of general relativity, Scholz describes how Weyl responded to this challenge by developing a truly infinitesimal space‐time geometry that generalized classical Riemannian geometry. Although unconvinced by Einstein's critique of his unified field theory, Weyl shifted his focus from this realm to the classical space problem, analyzed earlier with more primitive techniques by Hermann Helmholtz and Sophus Lie. In this connection, it should be mentioned that Thomas Hawkins has given a probing analysis of Weyl's related work on the representation of Lie groups in his tour‐de‐force work, Emergence of the Theory of Lie Groups . Scholz argues that Weyl's struggle to tame his modernized version of the space problem stemmed from a deep‐seated belief in his geometrical ideas, which in turn were nourished by philosophical musings. By demonstrating the closely related conceptual links that motivated Weyl's research in infinitesimal geometry, space‐time physics, and the foundations of mathematics, Scholz nicely illuminates the underlying fabric of epistemological concerns that occupied Weyl's attention during this fertile period.The three remaining essays in Part 1 focus on other aspects of Weyl's work in mathematical physics and cosmology. Skuli Sigurdsson's “Journeys in Spacetime” offers a broad interpretation of Weyl's career, one that emphasizes Weyl's sensitivity to cultural tensions as reflected in his philosophical roots, which combined phenomenology with facets of German idealism. Shaken by the annihilation of cultural values in Nazi Germany, Weyl became deeply aware of the gulf that separated his earlier life in Göttingen and Zurich from the one he took up at Princeton's Institute for Advanced Study in 1933. He tried to adapt, but felt out of place in an Anglo‐American scientific culture openly hostile toward metaphysics and speculative philosophy. Sigurdsson stresses these tensions, contrasting the introspective, creative individual against the backdrop of the collective in the age of the machine, but without spelling out which collective were most important for him. Wolfgang Pauli thought he knew and, like Einstein before him, he had no compunction about bluntly telling Weyl he was a mathematician, not a physicist.Pauli's opinions notwithstanding, Weyl did far more than just dabble around the mathematical edges of the new physics. If Coleman and Korté perhaps press their case for his visionary accomplishments too far, Norbert Straumann's essay “Ursprünge der Eichtheorien” suggests why Weyl's reputation among physicists has risen steadily ever since the advent of Yang‐Mills theory in the 1950s. In the course of describing Weyl's adaptation of his gauge transformation formalism to Dirac's electron theory, Straumann sheds considerable light on Pauli's role as self‐appointed watchman guarding the disciplinary boundary that separated theoretical physics from physical mathematics . He further suggests that disciplinary jealousy was a major reason why Pauli dismissed Weyl's two‐component formalism for spinors out of hand.In the realm of cosmology, on the other hand, Weyl's work has long since passed into the dustbins of history, as Hubert Goenner remarks in recounting a fascinating chapter in the infancy of space‐time physics. While doing so, Goenner shows how initially Weyl almost slavishly adopted what Einstein called Mach's principle, which asserts that the metric structure of space‐time is solely determined by the distribution of matter in the universe. This notion was quickly challenged by Willem De Sitter, who showed that Einstein's matter‐free field equations admitted a global solution with non‐zero constant curvature. Both Einstein and Weyl tried to argue that invisible masses must be present just over the “spatial horizon” of De Sitter's world in order to account for its curvature. Goenner meticulously analyzes the physical and mathematical issues at stake in this debate, stressing how Weyl gradually moved away from a strong physical interpretation to one in which mathematics models rather than physics models simply reveal natural phenomena. He argues further that Weyl's cosmological principle arose as the final expression of his search for a deeper physical meaning.Given the quality of these essays, it is regrettable that this book contains so little about Weyl's professional career, a weakness the editor could have redressed at least partially in his general introduction. This omission is all the more unfortunate given the dearth of readily accessible information about Weyl's life available elsewhere. For however mundane his outward existence may have been, the reader cannot be expected to appreciate the interplay between the world Weyl knew and his creative responses to it without fairly detailed knowledge of his biography. Shorn from these contexts, it becomes difficult to form a flesh‐and‐blood image of Weyl beyond the cliché‐ridden stereotype that sees him as a “heroic thinker in the grand German tradition.” While none of the authors falls into this trap, the collective impression they leave suggests a most enigmatic figure. Either Weyl the man tends to get lost in the shadows of his collected scientific output or he appears as a mystic loner, an outcast who abhorred the machine age in which he lived. Closer attention to the people in his life would no doubt produce a very different picture of the man and his interests. This major lacuna notwithstanding, the present volume will surely remain an indispensable resource for any future investigations of Weyl's staggering intellectual achievements. (shrink)

Écriture sans écriture, critique sans discours : il s’agit de traquer et de faire ressortir l’obsession du « projet » et de son idéologie dans la trame d’un appel à contrats doctoraux. Ctrl+B chaque fois (et elles sont très nombreuses) où le petit mot est réitéré.