The most important analytical tool in non-cooperative game theory is the concept of a Nash equilibrium, which is a collection of possibly mixed strategies, one for each player, with the property that each player's strategy is a best reply to the strategies of the other players. If we do not go into normative game theory, which concerns itself with the recommendation of strategies, and focus instead entirely on the positive theory of prediction, two alternative interpretations of the Nash equilibrium concept (...) are predominantly available.In the more traditional one, a Nash equilibrium is a prediction of actual play. A game may not have a Nash equilibrium in pure strategies, and a mixed strategy equilibrium may be difficult to incorporate into this interpretation if it involves the idea of actual randomization over equally good pure strategies. In another interpretation originating from Harsanyi, see also Rubinstein, and Aumann and Brandenburger, a Nash equilibrium is a ‘consistent’ collection of probabilistic expectations, conjectures, on the players. It is consistent in the sense that for each player each pure strategy, which has positive probability according to the conjecture about that player, is indeed a best reply to the conjectures about others. (shrink)

We define an evolutionary process of “economic Darwinism” for playing the field, symmetric games. The process captures two forces. One is “economic selection”: if current behavior leads to payoff differences, behavior yielding lowest payoff has strictly positive probability of being replaced by an arbitrary behavior. The other is “mutation”: any behavior has at any point in time a strictly positive, very small probability of shifting to an arbitrary behavior. We show that behavior observed frequently is in accordance with “evolutionary equilibrium”, (...) a static equilibrium concept suggested in the literature. Using this result, we demonstrate that generally under positive (negative) externalities, economic Darwinism implies even more under- (over-)activity than does Nash equilibrium. (shrink)

We generalize the concept of Nash equilibrium in mixed strategies for strategic form games to allow for ambiguity in the players' expectations. In contrast to other contributions, we model ambiguity by means of so-called lower probability measures or belief functions, which makes it possible to distinguish between a player's assessment of ambiguity and his attitude towards ambiguity. We also generalize the concept of trembling hand perfect equilibrium. Finally, we demonstrate that for certain attitudes towards ambiguity it is possible to explain (...) cooperation in the one-shot Prisoner's Dilemma in a way that is in accordance with some recent experimental findings. (shrink)

This paper uses a two-dimensional version of a standard common consequence experiment to test the intransitivity explanation of Allais-paradox-type violations of expected utility theory. We compare the common consequence effect of two choice problems differing only with respect to whether alternatives are statistically correlated or independent. We framed the experiment so that intransitive preferences could explain violating behavior when alternatives are independent, but not when they are correlated. We found the same pattern of violation in the two cases. This is (...) evidence against intransitivity as an explanation of the Allais Paradox. The question whether violations of expected utility are mainly due to intransitivity or to violation of independence is important since it is exactly on this issue the main new decision theories differ. (shrink)

John Rawls' bog En teori om retfærdighed er blandt de absolut vigtigste værker i det 20. århundredes politiske filosofi. Det udkom første gang i 1971 og markerede et brud med en udbredt skepsis over for normative politiske teorier, det vil sige teorier, om hvorledes samfundet bør være indrettet. Med en sofistikeret version af klassisk kontraktteori argumenterer Rawls for en socialliberal vision om retfærdighed, hvor enhver sikres en frihed, der er forenelig med alles tilsvarende frihed, hvor de økonomisk dårligst stillede skal (...) stilles bedst muligt. I nærværende antologi diskuterer en række forskere vigtige temaer i såvel det nævnte hovedværk, som hans øvrige forfatterskab. Bidragene introducerer derved ikke blot til Rawls' politiske filosofi, men også til diskussioner, der står helt centralt i nyere politisk teori såsom vores forhold til fremtidige generationer, civil ulydighed og global retfærdighed. (shrink)

Michael Hviid Jacobsen and Poul Poder, Om Bauman. Kritiske essays.

Written in the 1960s, TRUTH AND METHOD is Gadamer's magnum opus.

"An astutely argued and elegantly written (and translated) book on the philosophical genealogy and logical implications of the work of Jacques Lacan."Choice.

Global climate change is likely to become a major cause of future migration. Small Island States are particularly vulnerable since territorial destruction caused by sea level rise poses a threat to their entire existence. This raises important issues concerning state sovereignty and self-determination. Is it possible for a state to remain self-determining even if it lacks a stable population residing on a specific territory? It has been suggested that migrants from disappearing Small Island States could continue to exercise sovereign control (...) over their abandoned territory. Such an arrangement would allow them to retain a measure of self-determination. The question posed in this paper is whether this ?deterritorialized state proposal? is conceptually plausible and normatively acceptable. It is argued that the proposal is conceptually plausible if we adopt a gradual understanding of ?self-determination?, but that its normative acceptability is weak even if it is supplemented with compensatory measures. (shrink)

Introduction -- Theses and discussions -- Analytical concepts -- General approach -- Moral philosophy in antiquity -- Christian moral philosophy -- Aristotle and Thomas Aquinas -- William of Ockham -- From William of Ockham to Francisco Suarez -- Protestant natural law -- John Locke -- The American and French declarations of rights -- Early critique of the Declaration of Rights -- Immanuel Kant and modern moral philosophy -- Human rights today.

Émile Durkheim remains one of the most controversial, and deeply misunderstood, classics of social theory. His work differs from the dominant version of sociology that has essentially accepted the modernist self-description of contemporary societies; and it contradicts the individualism that has come to dominate the social sciences. For everybody who is interested in constructing theoretical alternatives to this individualism, Durkheim's sociology can be a useful inspiration - not only because of the solutions it suggests, but already because of the questions (...) it asks. Making use of the theoretical possibilities offered by the Durkheimian tradition, however, requires going beyond the familiar appropriations. The Oxford Handbook of Émile Durkheim takes stock of the different recent debates on Durkheimian sociology, and makes them accessible to a wide audience spanning various disciplines; this includes crucial debates that, due to language barriers, are not easily accessible for an English-reading public. The handbook's chapters elucidate the controversial key concepts of Durkheimian sociology; situate them within the contemporary political and theoretical debates they were originally responding to; offer surveys of empirical research that uses Durkheimian concepts (on topics that were already central for Durkheim's own work as well as on topics that Durkheim hardly touched upon), thus demonstrating the possibilities of a Durkheimian sociology; bring out the divergent, and competing, ways in which Durkheim's ideas have been appropriated and reformulated within more recent theoretical developments in the social sciences. In doing so, this volume is an important resource for all scholars and students looking to understand Durkheimian sociology. (shrink)

Recently Carrie S. Jenkins formulated an epistemology of mathematics, or rather arithmetic, respecting apriorism, empiricism, and realism. Central is an idea of concept grounding. The adequacy of this idea has been questioned e.g. concerning the grounding of the mathematically central concept of set (or class), and of composite concepts. In this paper we present a view of concept formation in mathematics, based on ideas from Carnap, leading to modifications of Jenkins’s epistemology that may solve some problematic issues with her ideas. (...) But we also present some further problems with her view, concerning the role of proof for mathematical knowledge. (shrink)

Attempts have been made to analyse features in mathematics within a social constructivist context. In this paper we critically examine some of those attempts recently made with focus on problems of the objectivity, ontology, necessity, and atemporality of mathematics. Our conclusion is that these attempts fare no better than traditional alternatives, and that they, furthermore, create new problems of their own.

It is a common mistake, especially, perhaps, among students of the religions and philosophies of India, to assume that the word prakṛti, best known as the ultimate material principle in the Sāṃkhya and Yoga systems of religious thought, the material cause of the world in Hindu theologies and, as such, an epithet of the goddesses in Hinduism, always refers to an ultimate principle. Even in Sāṃkhya and Yoga texts the word prakṛti is used in various ways. Prakṛti does not always (...) refer to the ultimate principle. Translators often leave the word prakṛti untranslated and mislead the reader to assume that the ultimate principle is referred to, when it is not. This article discusses the use of prakṛti in the Sāṃkhya-Yoga texts the Yogasūtra and the Vyāsabhāṣya and criticises some translation practices. (shrink)

Mental time travel is the ability to mentally project oneself backward in time to relive past experiences and forward in time to pre-live possible future experiences. Previous work has focused on MTT in its voluntary form. Here, we introduce the notion of involuntary MTT. We examined involuntary versus voluntary and past versus future MTT in a diary study. We found that involuntary future event representations—defined as representations of possible personal future events that come to mind with no preceding search attempts—were (...) as common as involuntary autobiographical memories and similar to them regarding cuing and subjective qualities. Future MTT involved more positive and idyllic representations than past MTT. MTT into the distant future/past involved more representations of cultural life script events than MTT into the immediate past/future. The findings are discussed in relation to cultural learning and MTT considered as a higher mental process. (shrink)

One of the leading legal philosophers of this century, Kelsen published this short treatise in 1934, when the neo-Kantian influence on his work was at its zenith. An earlier, "constructivist" phase had been displaced by his effort to provide something approximating a neo-Kantian foundation for his theory. If this second phase represents the Pure Theory of Law in its most characteristic form, then the present treatise may well be its central text. And of Kelsen's many statements of the Pure Theory, (...) this one is surely the most accessible. Topics covered include the legal norm and Kelsen's normativity thesis, law and morality, the role of ideology, the concept of the legal person, legal interpretation, the identity of law and state, and the theory of international law. Among the appendices is an annotated bibliography of secondary literature on Kelsen. (shrink)

Using Carnap’s concept explication, we propose a theory of concept formation in mathematics. This theory is then applied to the problem of how to understand the relation between the concepts formal proof and informal, mathematical proof.

On the basis of a chronological approach of the decision-making process with regard to the recognition of the PRC we concluded in an analytical part that the decision-making process was merely of the "hypo-institutional" type. Afterwards, we examined the effectivity of the Belgian policy in comparison with the international scientific literature on recognition and with the practice of other small European states. We concluded the non-recognition policy had been ineffective. The relation between "hypo-institutional" decision-making on the one hand and ineffective (...) public policy on the other hand is just one element within a broader research-project : "The effectivity of public policy according to type of decisionmaking". (shrink)

Tekster til Buddhismen. Selected and translated by Frede Möller-Kristensen. Gyldendal, Copenhagen 1980. 104 pp. Illustrated. D.Kr.68.50.

In this article we introduce an argument developed in Borch-Jacobsen and Shamdasani (2006). We attempt to draw some consequences from several decades of work in Freud history. We argue that such work has had the cumulative effect of showing up the legendary nature of Freud's epistemology, and has demonstrated the direct linkages between his interpretive procedures and rewriting of history. The Freud legend was by no means a supplementary accessory which accompanied substantive advances, akin to the legend of Newton's (...) apple: rather, it was constitutive of the very identity of psychoanalysis, and enabled its differentiation from rival psychologies and psychotherapies, and promoted the claim that it formed the only viable science of mind and the most advanced form of psychotherapy. Historical research enables one to grasp the legendary nature of Freud's achievement. (shrink)

Is mental illness an object of knowledge? The history of psychiatry teaches us to doubt it, by emphasizing the infinitely variable and fluctuating character of psychiatric entities. Mental illness is not simply ‘out there’, waiting to be described and theorized by psychiatrists; it interacts with psychiatric theories, clinical entities waxing and waning in accordance with diagnostic fashions, institutional practices and methods of treatment. This should be a warning to psychiatrists and therapists: their intervention is part of the ‘etiological equation’ of (...) the syndromes that they claim to observe from the outside. But this should also be a warning to historians of psychiatry, who can no longer be content with writing the history of ready-made syndromes and psychiatric theories. They must, if they want to remain faithful to their improbable ‘object’, study the complex interactions from which those syndromes and those theories emerge, somewhere between the doctors, the patients and the society that surrounds them. In short, they must study the making of psychiatric history, and understand that they participate in it. (shrink)

Neurobiologically inspired theories of speech perception such as that proposed by Sussman et al. are useful to the extent that they are able to constrain such theories. If they are simply intended as suggestive analogies, their usefulness is questionable. In such cases it is better to stick with the Gibsonian approach of attempting to isolate invariants in speech and to demonstrate their role for the perceiver in perceptual experiments.

____Remembering Anna O.__ offers a devastating examination of the very foundations of psychoanalytic theory and practice, which was born with the publication of Breuer and Freud's ____Studies on Hysteria__ in 1895. Breuer described the case of Anna O., a young woman afflicted with a severe hysteria whom he had cured of her symptoms by having her recount under hypnosis the traumatic events that precipitated her illness. Drawing on the most recent Freud scholarship and on long-secret documents, Borch-Jacobsen demonstrates, however, (...) that Anna O. was never cured by Breuer's "talking cure" and that both Breuer and Freud knowingly falsified the historical record. Borch-Jacobsen points out the numerous inconsistencies in Breuer's account that suggests that Anna O.'s symptoms were simulated to meet Breuer's theoretical expectations and that her famed "reminiscences" were in fact fictitious memories induced by Breuer in the course of a hypnotic treatment. (shrink)

One questioned premiss in the indispensability argument of Quine and Putnam is confirmational holism. In this paper I argue for a weakened form of holism, and thus a strengthened version of the ind ..

Mathematical concepts are explications, in Carnap's sense, of vague or otherwise non-clear concepts; mathematical theories have an empirical and a deductive component. From this perspective, I argue that the empirical component of a mathematical theory may be tested together with the fruitfulness of its explications. Using these ideas, I furthermore give an argument for mathematical realism, based on the indispensability argument combined with a weakened version of confirmational holism.