The justification of Bayes' rule by cognitive rationality principles is undertaken by extending the propositional axiom systems usually proposed in two contexts of belief change: revising and updating. Probabilistic belief change axioms are introduced, either by direct transcription of the set-theoretic ones, or in a stronger way but nevertheless in the spirit of the underlying propositional principles. Weak revising axioms are shown to be satisfied by a General Conditioning rule, extending Bayes' rule but also compatible with others, and weak updating (...) axioms by a General Imaging rule, extending Lewis' rule. Strong axioms (equivalent to the Miller–Popper axiom system) are necessary to justify Bayes' rule in a revising context, and justify in fact an extended Bayes' rule which applies, even if the message has zero probability. (shrink)

Despite its importance in various fields, analogical reasoning has not yet received a unified formal representation. Our contribution proposes a general scheme of inference that is compatible with different types of logic (deductive, probabilistic, non-monotonic). Firstly, analogical assessment precisely defines the similarity of two objects according to their properties, in a relative rather than absolute way. Secondly, analogical inference transfers a new property from one object to a similar one, thanks to an over-hypothesis linking two sets of properties. The belief (...) strength in the conclusion is then directly related to the belief strength in this meta-hypothesis. (shrink)

Two main schemes explain how a system adapts to its environment. Evolutionary models are grounded on three usual processes (variation, transmission, selection) acting at the population level. Learning models are concerned with the endogenous search for a better performance at the individual level. The first ones were initially favored by biology and the second well illustrated by game theory. The article examines first how game theory went to evolution and how biology later considered learning. It shows some examples of a (...) hybrid use of models of each type. It finally proposes a common framework for both types of models. (shrink)

The justification of Bayes' rule by cognitive rationality principles is undertaken by extending the propositional axiom systems usually proposed in two contexts of belief change: revising and updating. Probabilistic belief change axioms are introduced, either by direct transcription of the set-theoretic ones, or in a stronger way but nevertheless in the spirit of the underlying propositional principles. Weak revising axioms are shown to be satisfied by a General Conditioning rule, extending Bayes' rule but also compatible with others, and weak updating (...) axioms by a General Imaging rule, extending Lewis' rule. Strong axioms (equivalent to the Miller–Popper axiom system) are necessary to justify Bayes' rule in a revising context, and justify in fact an extended Bayes' rule which applies, even if the message has zero probability. (shrink)

Abduction was first introduced in the epistemological context of scientific discovery. It was more recently analyzed in artificial intelligence, especially with respect to diagnosis analysis or ordinary reasoning. These two fields share a common view of abduction as a general process of hypotheses formation. More precisely, abduction is conceived as a kind of reverse explanation where a hypothesis H can be abduced from events E if H is a good explanation of E. The paper surveys four known schemes for abduction (...) that can be used in both fields. Its first contribution is a taxonomy of these schemes according to a common semantic framework based on belief revision. Its second contribution is to produce, for each non-trivial scheme, a representation theorem linking its semantic framework to a set of postulates. Its third contribution is to present semantic and axiomatic arguments in favor of one of these schemes, ordered abduction, which has never been vindicated in the literature. (shrink)

L’article propose d’abord une version simplifiée d’une ontologie universelle, conçue comme un cadre général de description du monde matériel et mental. Il examine les notions d’entité, de propriété, de relation et de temporalité et leurs développements conjoints en termes de rapport entre les parties et le tout ou encore d’émergence d’une entité nouvelle. Il illustre ensuite les principes précédents en ce qui concerne la science économique, dont les entités de base sont les agents, les biens et les institutions. Il insiste (...) sur le couplage que cette dernière réalise entre leurs propriétés physiques ou psychologiques et le raisonnement qu’elle propose en termes d’équilibre et plus récemment d’apprentissage. Classification JEL : A12. (shrink)

RésuméEn dépit de son importance dans divers domaines, le raisonnement analogique n'a pas encore reçu de représentation formelle unifiée. Notre contribution propose un schéma d'inférence général, compatible avec différentes logiques (déductive, probabiliste, non monotone). Premièrement, un énoncé analogique définit précisément la similarité entre deux objets en fonction de leurs propriétés, de façon relative et non absolue. Deuxièmement, une inférence analogique transfère une propriété nouvelle d'un objet à un objet similaire, grâce à une hypothèse d'arrière-plan qui relie deux ensembles de propriétés. (...) Le degré de croyance dans la conclusion est alors directement relié au degré de croyance dans cette méta-hypothèse. (shrink)

The Sleeping Beauty problem is presented in a formalized framework which summarizes the underlying probability structure. The two rival solutions proposed by Elga and Lewis differ by a single parameter concerning her prior probability. They can be supported by considering, respectively, that Sleeping Beauty is “fuzzy-minded” and “blank-minded”, the first interpretation being more natural than the second. The traditional absent -minded driver problem is reinterpreted in this framework and sustains Elga’s solution.

The paper studies a specific adaptive learning rule when each player faces a unidimensional strategy set. The rule states that a player keeps on incrementing her strategy in the same direction if her utility increased and reverses direction if it decreased. The paper concentrates on games on the square [0,1]×[0,1]\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$[0,1]\times [0,1]$$\end{document} as mixed extensions of 2×2\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$2\times 2$$\end{document} games. We study in general the (...) behavior of the system in the interior as well as on the borders of the strategy space. We then describe the system asymptotic behavior for symmetric, zero-sum, and twin games. Original patterns emerge. For instance, for the “prisoner’s dilemma” with symmetric initial conditions, the system goes directly to the symmetric Pareto optimum. For “matching pennies,” the system follows slowly expanding cycles around the mixed strategy equilibrium. (shrink)

Introduction. Bert HAMMINGA and Neil DE MARCHI: Préface. Bert HAMMINGA and Neil DE MARCHI: Idealization and the Defence of Economics: Notes Toward a History. Part I: General Observations on Idealization in Economics. Kevin D. HOOVER: Six Queries about Idealization in an Empirical Context. Bernard WALLISER: Three Generalization Processes for Economic Models. Steven COOK and David HENDRY: The Theory of Reduction in Econometrics. Maarten C.W. JANSSEN: Economic Models and Their Applications. Adolfo GARCÍA DE LA SIENRA: Idealization and Empirical Adequacy (...) in Economic Theory. Izabella NOWAKOWA and Leszek NOWAK: On Correspondence between Economic Theories. Uskali MÄKI: Isolation, Idealization and Truth in Economics. Part II: Case Studies of Idealization in Economics. Nancy CARTWRIGHT: Mill and Menger: Ideal Elements and Stable Tendencies. Wolfgang BALZER: Exchange Versus Influence: A Case of Idealization. Kees COOLS, Bert HAMMINGA, Theo A.F. KUIPERS: Truth Approximation by Concretization in Capital Structure Theory. Daniel M. HAUSMAN: Paul Samuelson as Dr. Frankenstein: When an Idealization Runs Amuck. Hugo A. KEUZENKAMP: What if an Idealization is Problematic? The Case of the Homogeneity Condition in Consumer Demand. Werner DIEDERICH: Nowak on Explanation and Idealization in Marx's 'Capital'. Gérard JORLAND: Idealization and Transformation. Jack BIRNER: Idealizations and Theory Development in Economics. Some History and Logic of the Logic Discovery. Discussions. Leszek NOWAK: The Idealizational Methodology and Economics. Replies to Diederich, Hoover, Janssen, Jorland and Mäki. (shrink)

The article examines two cases of adoption of evolutionary ways of thinking by modern economists: Nelson and Winter’s (Evolutionary Theory of Economic Change, 1982), and evolutionary game theory (1990s and after). In both cases, the authors explicitly refer to natural selection in an economic context. I show that natural selection is taken in two different senses, which correspond to two general conceptions of the principle of natural selection, one of which contains reproduction and heredity as key elements, whereas the other (...) does not. (shrink)

Descartes has often been called the 'father of modern philosophy'. His attempts to find foundations for knowledge, and to reconcile the existence of the soul with the emerging science of his time, are among the most influential and widely studied in the history of philosophy. This is a classic and challenging introduction to Descartes by one of the most distinguished modern philosophers. Bernard Williams not only analyzes Descartes' project of founding knowledge on certainty, but uncovers the philosophical motives for (...) his search. With acute insight, he demonstrates how Descartes' _Meditations _are not merely a description but the very enactment of philosophical thought and discovery. Williams covers all of the key areas of Descartes' thought, including God, the will, the possibility of knowledge, and the mind and its place in nature. He also makes profound contributions to the theory of knowledge, metaphysics and philosophy generally. With a new foreword by John Cottingham. (shrink)

This essay asks why Aristotle, certainly no friend to unlimited democracy, seems so much more comfortable with unconstrained rhetoric in political deliberation than current defenders of deliberative democracy. It answers this question by reconstructing and defending a distinctly Aristotelian understanding of political deliberation, one that can be pieced together out of a series of separate arguments made in the Rhetoric, the Politics, and the Nicomachean Ethics.

Abstract The idea of a purely civic nationalism has attracted Western scholars, most of whom rightly disdain the myths that sustain ethnonationalist theories of political community. Civic nationalism is particularly attractive to many Americans, whose peculiar national heritage encourages the delusion that their mutual association is based solely on consciously chosen principles. But this idea misrepresents political reality as surely as the ethnonationalist myths it is designed to combat. And propagating a new political myth is an especially inappropriate way of (...) defending the legacy of Enlightenment liberalism from the dangers posed by the growth of nationalist political passions. (shrink)

In 1944 Horkheimer and Adorno warned that industrial society turns reason into rationalization, and Polanyi warned of the dangers of the self-regulating market, but today, argues Stiegler, this regression of reason has led to societies dominated by unreason, stupidity and madness. However, philosophy in the second half of the twentieth century abandoned the critique of political economy, and poststructuralism left its heirs helpless and disarmed in face of the reign of stupidity and an economic crisis of global proportions. New theories (...) and concepts are required today to think through these issues. The thinkers of poststructuralism Lyotard, Deleuze, Derrida must be re-read, as must the sources of their thought, Hegel and Marx. But we must also take account of Naomi Klein’s critique of Milton Friedman and the Chicago School and her account of the ‘shock doctrine’. In fact, argues Stiegler, a permanent ‘state of shock’ has prevailed since the beginning of the industrial revolution, intensified by the creative destruction brought about by the consumerist model. The result has been a capitalism that destroys desire and reason and in which every institution is undermined, above all those institutions that are the products par excellence of the Enlightenment the education system and universities. Through a powerful critique of thinkers from Marx to Derrida, Stiegler develops new conceptual weapons to fight this destruction. He argues that schools and universities must themselves be transformed: new educational institutions must be developed both to take account of the dangers of digitization and the internet and to enable us to take advantage of the new opportunities they make available. (shrink)

Bernard Berofsky addresses that metaphysical picture directly.Nature's Challenge to Free Willoffers an original defense of Humean Compatibilism.

This review demonstrates that an individualist view of emotion and regulation is untenable. First, I question the plausibility of a developmental shift away from social interdependency in emotion regulation. Second, I show that there are multiple reasons for emotional experiences in adults to elicit a process of social sharing of emotion, and I review the supporting evidence. Third, I look at effects that emotion sharing entails at the interpersonal and at the collective levels. Fourth, I examine the contribution of emotional (...) sharing to emotion regulation together with the relevant empirical evidence. Finally, the various functions that the social sharing of emotion fulfills are reviewed and the relevance of the social sharing of emotion for emotion scientists is discussed. (shrink)

How I became a philosopher -- To love, to love me, to love us.

From the beginning the French philosopher Claude Lefort has set himself the task of interpreting the political life of modern society-and over time he has succeeded in elaborating a distinctive conception of modern democracy that is linked to both historical analysis and a novel form of philosophical reflection. This book, the first full-scale study of Lefort to appear in English, offers a clear and compelling account of Lefort's accomplishment-its unique merits, its relation to political philosophy within the Continental tradition, and (...) its great relevance today. Much of what passes for political philosophy in our day is merely politicized philosophical concepts, a distinction author Bernard Flynn underscores as he describes the development of Lefort's truly political philosophy-its ideas formed in response to his own political experience and to the work of certain major figures within the tradition of political thought. Beginning with Lefort's most important single work, his book on Machiavelli, Flynn presents the philosopher's conceptions of politics, modernity, and interpretation in the context within which they took shape. He then draws on a wide variety of Lefort's works to explicate his notions of premodern and modern democracy in which totalitarianism, in Lefort's singular and highly influential theory, is identified as a permanent problem of modernity. A valuable exposition of one of the most important Continental philosophers of the post-World War II period, Flynn's book is itself a noteworthy work of interpretive philosophy, pursuing the ideas and issues addressed by Lefort to a point of unparalleled clarity and depth. (shrink)

Thomas Hobbes was the first great English political philosopher. His work excited intense controversy among his contemporaries and continues to do so in our own time. In this masterly introduction to his work, Bernard Gert provides the first account of Hobbes’s political and moral philosophy that makes it clear why he is regarded as one of the best philosophers of all time in both of these fields. In a succinct and engaging analysis the book illustrates that the commonly accepted (...) view of Hobbes as holding psychological egoism is not only incompatible with his account of human nature but is also incompatible with the moral and political theories that he puts forward. It also explains why Hobbes’s contemporaries did not accept his explicit claim to be providing a natural law account of morality. Gert shows that for Hobbes, civil society is established by a free-gift of their right of nature by the citizens; it does not involve a mutual contract between citizens and sovereign. As injustice involves breaking a contract, the sovereign cannot be unjust; however, the sovereign can be guilty of ingratitude, which is immoral. This distinction between injustice and immorality is part of a sophisticated and nuanced political theory that is in stark contrast to the reading often incorrectly attributed to Hobbes that “might makes right”. It illustrates how Hobbes’s goal of avoiding civil war provides the key to understanding his moral and political philosophy. _Hobbes: Prince of Peace_ is likely to become the classic introduction to the work of Thomas Hobbes and will be a valuable resource for scholars and students seeking to understand the importance and relevance of his work today. (shrink)

These twenty-five essays span from ancient philosophy to Wittgenstein and express Williams’s conviction that studying the history of philosophy is an essential part of philosophy. Williams distinguishes a historical approach , which is focused on the context of a historical text and aims at the question of why some theory came up, from doing “history of philosophy,” aiming at a contribution to current philosophical debates by denying transhistorical identity and making use of the “alienation effect.”.

Philosophy should not try to assimilate itself to the aims of the sciences. Scientism stems from the false assumption that a representation of the world minimally based on local perspectives is what best serves self-understanding. Philosophy must concern itself with the history of our conceptions, and we must overcome the need to think that this history should ideally be vindicatory. There is no basic conflict between arguing within the framework of our ideas, reflectively making better sense of them, and understanding (...) their highly contingent history. The third of these activities is an inescapable part of the second. (shrink)

Thomas Hobbes was the first great English political philosopher. His work excited intense controversy among his contemporaries and continues to do so in our own time. In this masterly introduction to his work, Bernard Gert provides the first account of Hobbes’s political and moral philosophy that makes it clear why he is regarded as one of the best philosophers of all time in both of these fields. In a succinct and engaging analysis the book illustrates that the commonly accepted (...) view of Hobbes as holding psychological egoism is not only incompatible with his account of human nature but is also incompatible with the moral and political theories that he puts forward. It also explains why Hobbes’s contemporaries did not accept his explicit claim to be providing a natural law account of morality. Gert shows that for Hobbes, civil society is established by a free-gift of their right of nature by the citizens; it does not involve a mutual contract between citizens and sovereign. As injustice involves breaking a contract, the sovereign cannot be unjust; however, the sovereign can be guilty of ingratitude, which is immoral. This distinction between injustice and immorality is part of a sophisticated and nuanced political theory that is in stark contrast to the reading often incorrectly attributed to Hobbes that “might makes right”. It illustrates how Hobbes’s goal of avoiding civil war provides the key to understanding his moral and political philosophy. _Hobbes: Prince of Peace_ is likely to become the classic introduction to the work of Thomas Hobbes and will be a valuable resource for scholars and students seeking to understand the importance and relevance of his work today. (shrink)

In this paper, the authors briefly summarize how object theory uses definite descriptions to identify the denotations of the individual terms of theoretical mathematics and then further develop their object-theoretic philosophy of mathematics by showing how it has the resources to address some objections recently raised against the theory. Certain ‘canonical’ descriptions of object theory, which are guaranteed to denote, correctly identify mathematical objects for each mathematical theory T, independently of how well someone understands the descriptive condition. And to have (...) a false belief about some particular mathematical object is not to have a true belief about some different mathematical object. (shrink)

In this article, presented as the Second Annual Thesis Eleven Centre Lecture in 2003, Bernard Smith discusses the practice of writing art history in, and about, Australia and Europe. Smith defends periodization, and argues for the necessity of henceforth viewing what is typically called modernism as what he calls the formalesque. Further discussion includes problems of classification, the role of theory, and the place of Aboriginal art in white art history. The article thus surveys the condition of art history (...) in Australia, its emergence and consolidation as a discipline, and its present situation as part of contemporary world culture. (shrink)