Traditional Bayesianism requires that an agent’s degrees of belief be represented by a real-valued, probabilistic credence function. However, in many cases it seems that our evidence is not rich enough to warrant such precision. In light of this, some have proposed that we instead represent an agent’s degrees of belief as a set of credence functions. This way, we can respect the evidence by requiring that the set, often called the agent’s credal state, includes all credence functions that are in (...) some sense compatible with the evidence. One known problem for this evidentially motivated imprecise view is that in certain cases, our imprecise credence in a particular proposition will remain the same no matter how much evidence we receive. In this article I argue that the problem is much more general than has been appreciated so far, and that it’s difficult to avoid it without compromising the initial evidentialist motivation. _1_ Introduction _2_ Precision and Its Problems _3_ Imprecise Bayesianism and Respecting Ambiguous Evidence _4_ Local Belief Inertia _5_ From Local to Global Belief Inertia _6_ Responding to Global Belief Inertia _7_ Conclusion. (shrink)

The paper presents and defends a Bayesian theory of trust in social networks. In the first part of the paper, we provide justifications for the basic assumptions behind the model, and we give reasons for thinking that the model has plausible consequences for certain kinds of communication. In the second part of the paper we investigate the phenomenon of overconfidence. Many psychological studies have found that people think they are more reliable than they actually are. Using a simulation environment that (...) has been developed in order to make our model computationally tractable we show that in our model inquirers are indeed sometimes better off from an epistemic perspective overestimating the reliability of their own inquiries. We also show, by contrast, that people are rarely better off overestimating the reliability of others. On the basis of these observations we formulate a novel hypothesis about the value of overconfidence. (shrink)

According to the Argument from Disagreement (AD) widespread and persistent disagreement on ethical issues indicates that our moral opinions are not influenced by moral facts, either because there are no such facts or because there are such facts but they fail to influence our moral opinions. In an innovative paper, Gustafsson and Peterson (Synthese, published online 16 October, 2010) study the argument by means of computer simulation of opinion dynamics, relying on the well-known model of Hegselmann and Krause (J Artif (...) Soc Soc Simul 5(3):1–33, 2002; J Artif Soc Soc Simul 9(3):1–28, 2006). Their simulations indicate that if our moral opinions were influenced at least slightly by moral facts, we would quickly have reached consensus, even if our moral opinions were also affected by additional factors such as false authorities, external political shifts and random processes. Gustafsson and Peterson conclude that since no such consensus has been reached in real life, the simulation gives us increased reason to take seriously the AD. Our main claim in this paper is that these results are not as robust as Gustafsson and Peterson seem to think they are. If we run similar simulations in the alternative Laputa simulation environment developed by Angere and Olsson (Angere, Synthese, forthcoming and Olsson, Episteme 8(2):127–143, 2011) considerably less support for the AD is forthcoming. (shrink)

In this chapter, I argue that the field of cultural evolution can usefully inform attempts to understand and influence the long-term future. First, I provide an overview of cultural evolution, covering what it means for culture to evolve, the mechanisms by which it happens, the crucial importance of cumulative cultural evolution for hunan history, and how cultural evolution (and in particular intergroup competition) has driven the rise of large-scale cooperation. Second, I draw out some possible lessons from cultural evolution for (...) thinking about the long-term future. In particular, I suggest we should be careful not to prematurely ”lock in” certain values or other cultural features, and instead aim for a society open to variation and competition. I also consider whether the future will bring greater selection pressure for particular kinds of values, such as patience. (shrink)

According to the traditional Bayesian view of credence, its structure is that of precise probability, its objects are descriptive propositions about the empirical world, and its dynamics are given by conditionalization. Each of the three essays that make up this thesis deals with a different variation on this traditional picture. The first variation replaces precise probability with sets of probabilities. The resulting imprecise Bayesianism is sometimes motivated on the grounds that our beliefs should not be more precise than the evidence (...) calls for. One known problem for this evidentially motivated imprecise view is that in certain cases, our imprecise credence in a particular proposition will remain the same no matter how much evidence we receive. In the first essay I argue that the problem is much more general than has been appreciated so far, and that it’s difficult to avoid without compromising the initial evidentialist motivation. The second variation replaces descriptive claims with moral claims as the objects of credence. I consider three standard arguments for probabilism with respect to descriptive uncertainty—representation theorem arguments, Dutch book arguments, and accuracy arguments—in order to examine whether such arguments can also be used to establish probabilism with respect to moral uncertainty. In the second essay, I argue that by and large they can, with some caveats. First, I don’t examine whether these arguments can be given sound non-cognitivist readings, and any conclusions therefore only hold conditional on cognitivism. Second, decision-theoretic representation theorems are found to be less convincing in the moral case, because there they implausibly commit us to thinking that intertheoretic comparisons of value are always possible. Third and finally, certain considerations may lead one to think that imprecise probabilism provides a more plausible model of moral epistemology. The third variation considers whether, in addition to conditionalization, agents may also change their minds by becoming aware of propositions they had not previously entertained, and therefore not previously assigned any probability. More specifically, I argue that if we wish to make room for reflective equilibrium in a probabilistic moral epistemology, we must allow for awareness growth. In the third essay, I sketch the outline of such a Bayesian account of reflective equilibrium. Given that this account gives a central place to awareness growth, and that the rationality constraints on belief change by awareness growth are much weaker than those on belief change by conditionalization, it follows that the rationality constraints on the credences of agents who are seeking reflective equilibrium are correspondingly weaker. (shrink)

Suppose that an altruistic agent who is uncertain between evidential and causal decision theory finds herself in a situation where these theories give conflicting verdicts. We argue that even if she has significantly higher credence in CDT, she should nevertheless act in accordance with EDT. First, we claim that the appropriate response to normative uncertainty is to hedge one's bets. That is, if the stakes are much higher on one theory than another, and the credences you assign to each of (...) these theories are not very different, then it is appropriate to choose the option that performs best on the high-stakes theory. Second, we show that, given the assumption of altruism, the existence of correlated decision makers will increase the stakes for EDT but leave the stakes for CDT unaffected. Together these two claims imply that whenever there are sufficiently many correlated agents, the appropriate response is to act in accordance with EDT. (shrink)

Epistemologists can be divided into two camps: those who think that nothing short of certainty or (subjective) probability 1 can warrant assertion and those who disagree with this claim. This paper addressed this issue by inquiring into the problem of setting the probability threshold required for assertion in such a way that that the social epistemic good is maximized, where the latter is taken to be the veritistic value in the sense of Goldman (Knowledge in a social world, 1999). We (...) provide a Bayesian model of a test case involving a community of inquirers in a social network engaged in group deliberation regarding the truth or falsity of a proposition $p.$ p . Results obtained by means of computer simulation indicate that the certainty rule is optimal in the limit of inquiry and communication but that a lower threshold is preferable in less idealized cases. (shrink)

The phenomenon of base-rate neglect has elicited much debate. One arena of debate concerns how people make judgments under conditions of uncertainty. Another more controversial arena concerns human rationality. In this target article, we attempt to unpack the perspectives in the literature on both kinds of issues and evaluate their ability to explain existing data and their conceptual coherence. From this evaluation we conclude that the best account of the data should be framed in terms of a dual-process model of (...) judgment, which attributes base-rate neglect to associative judgment strategies that fail to adequately represent the set structure of the problem. Base-rate neglect is reduced when problems are presented in a format that affords accurate representation in terms of nested sets of individuals. (shrink)

Ao contrário do que as diversas aproximações entre Husserl e Descartes podem sugerir, Husserl foi um severo crítico do dualismo mente-corpo. Esse texto tem por objetivo explicar o conceito husserliano de corporeidade para assim expor como o autor defende uma concepção não dualista da corporeidade. Para Husserl não se trata de propor ‘eu tenho um corpo’ – o que pressupõe um componente anímico possuidor –, mas sim ‘eu sou um corpo’.

Aron Gurwitsch (1901-1973) est surtout connu du public fancophone par son ouvrage de 1957: Theorie du champ de la conscience. C'est la periode parisienne (de l'automne 1933 au printemps 1940) de Gurwitsch que le present volume documente tres precisement: il presente d'abord pour la premiere fois, les resultats substantiels d'un ouvrage en gestation qui n'aura pas vu le jour du vivant de l'auteur et qui rassemble, sous le titre Esquisse de la phenomenologie constitutive, les materiaux des cours et conferences (...) sur la Gestaltpsychologie, la psychologie intentionaliste, la phenomenologie de l'ideation, l'introduction a la phenomenologie. Le present volume rassemble aussi, a titre d'Appendice, quelques uns des articles publies par Aron Gurwitsch lors de cette periode parisienne. L'ensemble de ces travaux constitue un temoignage inedit sur une des toutes premieres introductions a la phenomenologie husserlienne, dans son veritable contexte de probleme. (shrink)

Aron Gurwitsch (1901-1973) est surtout connu du public fancophone par son ouvrage de 1957: Theorie du champ de la conscience. C'est la periode parisienne (de l'automne 1933 au printemps 1940) de Gurwitsch que le present volume documente tres precisement: il presente d'abord pour la premiere fois, les resultats substantiels d'un ouvrage en gestation qui n'aura pas vu le jour du vivant de l'auteur et qui rassemble, sous le titre Esquisse de la phenomenologie constitutive, les materiaux des cours et conferences (...) sur la Gestaltpsychologie, la psychologie intentionaliste, la phenomenologie de l'ideation, l'introduction a la phenomenologie. Le present volume rassemble aussi, a titre d'Appendice, quelques uns des articles publies par Aron Gurwitsch lors de cette periode parisienne. L'ensemble de ces travaux constitue un temoignage inedit sur une des toutes premieres introductions a la phenomenologie husserlienne, dans son veritable contexte de probleme. (shrink)

Reevaluates the ideas of the German general, shows how his writings have been misinterpreted, and applies Clausewitzian theory to twentieth century political history.

Leo Strauss’ controversial theory of esoteric philosophy, as presented in Persecution and the Art of Writing, sparked a fierce debate. Opponents and proponents of the theory utilised a wide range of perspectives to support their arguments. By investigating esoteric philosophy from a sociolinguistic perspective, this paper introduces a novel perspective to the Strauss dispute. In PAW Strauss is mistaken regarding esotericism and its role in philosophy. On one hand it is reasonable to endorse Strauss’ persuasive account on the origins of (...) esoteric writing. The Straussian account provides a plausible sociological background as to why philosophy, per se became an esoteric fliedH. On the other hand it seems as Strauss ascribed undue significance to possible clandestine massages that may be found within works of philosophy because philosophy is mostly already done in an esoteric linguistic space. (shrink)

Conventional approaches in pro- or anti-democratic discourses often scrutinize the efficacy of leadership based on its outcomes, or explore the moral foundations of different systems. Contrary to these approaches, my argument presented in this paper is grounded in the inherent psychological desire to be heard and accepted. I posit that the essence of democracy resides in free discussion — a value even embraced by committed anti-democrats in the context of debates, as their acknowledgment hinges on it. This article presents an (...) argument, developed based on my experience in actual debates called The Paradox of Anti-Democratic Arguments, to counter anti-democratic debaters who question the legitimacy of democratic norms. The article discusses the practical application of the argument in debates and casual discussions, its limitations and highlights the underlying psychological processes that make the argument effective in the context of Leon Festinger’s theory of cognitive dissonance. (shrink)

The commentaries indicate a general agreement that one source of reduction of base-rate neglect involves making structural relations among relevant sets transparent. There is much less agreement, however, that this entails dual systems of reasoning. In this response, we make the case for our perspective on dual systems. We compare and contrast our view to the natural frequency hypothesis as formulated in the commentaries.

In our everyday discourse, most of us use modal statements to express possibility, necessity, or contingency. Logicians, linguists, and philosophers of language tend to use the possible world discourse to analyse the semantics of this kind of sentences. There is a disadvantage of this method: in the usual Quinean meta-ontology it commits the users to the existence of possible worlds. Even though there are many theories on metaphysics of these possible worlds, I will focus on the fictionalist approach, which aims (...) to suspend the undesired ontological commitment. Therefore it is an anti-realist theory. The fictionalist strategy is based on the idea that according to our common-sense ontology, fictions and fictional entities do not exist, and one can treat the possible world discourse as a fiction, and the possible worlds as fictional entities. However, in the last two decades, realist theories about fictions and fictional entities have arisen, especially the abstract artefact theory. In this paper I try to revise the fictionalist approach to modality by keeping the main idea that possible worlds are fictional entities, while accepting that fictional entities are abstract artefacts. The result is a new realist theory of modal fictionalism. (shrink)

Performing surgery in the developing world presents unique challenges and dilemmas for the visiting physician from an industrialized country. Language barriers, widespread, profound pathology, and lack of adequate facilities are obvious hurdles. A more subtle problem, though every bit as significant, is that the principles and procedures we routinely utilize at home to uphold ethical standards of care and to aid us in decision-making are often poorly applicable in the developing world. Acknowledging that cultural factors play a primary role in (...) every aspect of their interaction with patients, physicians must scrutinize and even modify the tools they employ when attempting to deliver ethical care in foreign .. (shrink)

What is the sense of saying “now”? We are used to the established temporal relations by their points of reference (like “yesterday”), distinguished one from the other by measurement and the counting of time (which uses yardsticks, like “day”). So, is the now only another one of these points? Husserl tells us that is not only looking at the constituted time and already shared in common by the world that we will comprehend what is the sense of the now. In (...) this article, I try to follow Husserl’s theory of time with the intent to defend how the phenomenological perspective can clarify the relevant distinctions between “point” and “now”, especially when we comprehend “now” as an origin that closes in itself problems categorically distinct from those referred to the measurement in objective time. (shrink)

Aron Vinegar’s essay explores art history and visual culture’s dependence on a phenomenological conception of world, which is based on a hermeneutics of facticity, intentionality, and ontological difference. He argues that the ‘basic concept’ of world has structured the field of art history and visual culture in implicit and explicit ways, thus dictating many of its commitments and concerns. One of the primary limitations of this commitment to world, is that it has resulted in art history and visual culture’s (...) tendency to concern itself with a very small portion of existence, usually human existence, in its emphasis on hermeneutics and facticity, thus foreclosing on a more generous and speculative ontology, ethics, and politics. The concept of “world” suggests an overarching totality, an interconnected field of meaning and sense, often indicated by a tacit and resonate tonality. But there is no overarching “world” or “world-view” that can provide us with an overview of or container for the myriad worlds of things. An art history that is willing to consider that the world does not exist would acknowledge and embrace the fact that there is no overall focus, which can encompass things and events in all their spatio-temporal complexity. It would entail a practice attentive to a “supple and inflected bathmology” (Vinegar prefers this phrase to “flat ontology”) in its refusal to emphasize “privileged ontological scenes” predicated on hierarchies of ontological difference, and subsuming things and experience within the structures of phenomenological intentionality. To initiate such a practice, Vinegar suggests an embrace of what he terms “ontological indifference,” a robust notion of habit, and a temporal logic that would be fully attentive to a pluriverse of multiple existences and eruptions of substance, which extend well beyond ‘our’ realms of significance and meaning, cares and concerns, laughter and joy, losses and mournings. (shrink)

l / Some Aspects and Developments of Gestalt Psychology1 [I] The Development and Status of the Problem At the basis of the constitution of the physical ...

By age 85, most adults manifest some degree of motor impairment. However, in most individuals a specific etiology for motor decline and treatment to modify its inexorable progression cannot be identified. Recent clinical-pathologic studies provide evidence that mixed-brain pathologies are commonly associated with late-life motor impairment. Yet, while nearly all older adults show some degree of accumulation of Alzheimer’s disease and related dementias pathologies, the extent to which these pathologies contribute to motor decline varies widely from person to person. Slower (...) or faster than expected motor decline in the presence of brain injury and/or pathology has been conceptualized as more or less “resilience” relative to the average person This suggests that other factors, such as lifestyles or other neurobiologic indices may offset or exacerbate the negative effects of pathologies via other molecular pathways. The mechanisms underlying neural motor resilience are just beginning to be illuminated. Unlike its cousin, cognitive resilience which is restricted to neural mechanisms above the neck, the motor system extends the total length of the CNS and beyond the CNS to reach muscle and musculoskeletal structures, all of which are crucial for motor function. Building on prior work, we propose that by isolating motor decline unrelated to neuropathologies and degeneration, investigators can identify genes and proteins that may provide neural motor resilience. Elucidating these molecular mechanisms will advance our understanding of the heterogeneity of late-life motor impairment. This approach will also provide high value therapeutic targets for drug discovery of therapies that may offset the negative motor consequences of CNS pathologies that are currently untreatable. (shrink)

Interoception in the broader sense refers to the perception of internal states, including the perception of the actual state of the internal organs and the motor system. Dimensions of interoception include interoceptive accuracy, i.e., the ability to sense internal changes assessed with behavioral tests, confidence rating with respect to perceived performance in an actual behavioral test, and interoceptive sensibility, i.e., the self-reported generalized ability to perceive body changes. The relationship between dimension of cardioceptive and proprioceptive modalities and their association with (...) affect are scarcely studied. In the present study, undergraduate students filled out questionnaires assessing positive and negative affect, interoceptive sensibility, and body competence. Following this, they completed a behavioral task assessing cardioceptive accuracy and two tasks assessing proprioceptive accuracy with respect to the tension of arm flexor muscles and the angular position of the elbow joint. Confidence ratings were measured with visual analog scales after the tasks. With the exception of a weak association between cardioceptive accuracy and the respective confidence rating, no associations between and within modalities were found with respect to various dimensions of interoception. Further, the interoceptive dimensions were not associated with state and trait positive and negative affect and perceived body competence. In summary, interoceptive accuracy scores do not substantially contribute to conscious representations of cardioceptive and proprioceptive ability. Within our data, non-pathological affective states are not associated with the major dimensions of interoception for the cardiac and proprioceptive modalities. (shrink)

What does it mean for an agent faced with choice under uncertainty to “know” something? While a variety of mathematical methods are available to construct formal models to answer this question, the combination of different approaches may lead to unsettling paradoxes. I propose a unified theory that eliminates such inconsistencies by relying on a sharp conceptual distinction between information the decision-maker observes and how much of that information she can cognitively process. The resulting model allows for natural decision-theoretic characterizations of (...) comparing different amounts of information. (shrink)

Review of "Mental Fictionalism: Philosophical Explorations" by Tamás Demeter, Ted Parent, and Adam Toon.

Name der Zeitschrift: Der Islam Jahrgang: 93 Heft: 2 Seiten: 472-494.

1. Although a number of personality variables have been identified by various authors as the determinants of religious behavior, independent of specific religious denomination, the results of the studies under consideration certainly appear to be inconsistent with such claims. It is suggested instead that the personality correlates of religious behavior vary with the specific religious denomination. 2. For most people religious belief and religious observance are acquired or learned in the socialization process. In a culture in which there is no (...) social pressure to conform in relation to religious behavior , individual differences in adult religious behavior may be a result of certain personality differences. In the Israeli Jewish sample a number of personality variables were found to covary with religious belief and/or observance. Religious belief and observance, however, were also highly significant sources of variance in subjects' values. These value differences probably influence the what and how of the socialization process which in turn may be responsible for some-although probably not all-of the personality variables associated with religious behavior. 3. In cultures which are characterized by strong social pressure in relation to religious conformity, e. g. the culture represented by our United States Protestant sample, the religious behavior of many individuals will be a result of their need to conform rather than other personality variables directly related to their religious behavior as such. Thus in the United States Protestant sample conformity and variables associated with it were the only significant sources of variance in subjects' religious behavior. The results of our studies indicate the importance of differentiating between religious belief and observance which is merely the result of social conformity and religious belief and observance which is also the result of other variables which are more directly related to religious behavior as such. Presently we are in the process of constructing instruments to measure these two types of religious behavior. 4. Finally, it is suggested that in trying to discover the determinants of individual differences in religious behavior there has been too much emphasis on motivational variables and not enough on environmental factors. A social learning model may be the best suited for the investigation of the sources of individual differences in religious behavior. (shrink)