We argue that there is a continuum of cases without any demarcation between more individual and more cultural information, and that therefore “culture” should be viewed as a property that human mental representations and practices exhibit to a varying degree rather than as a type or a subclass of these representations and practices (or of “information”). We discuss the relative role of preservative and constructive processes in transmission. We suggest a revision of Richerson and Boyd’s classification of the (...) forces of cultural evloution. (shrink)

This article considers the common and shared world in teaching, by reference to the concept of profanation in relation to biopolitics. “To profane”, means to treat something as worldly and as something “that can be played with”. The act of profanation has implications for how objects that are “put on the table” can be regarded in teaching and how these “objects” can become public goods. But what happens when things that are used in teaching are representations of social injustice (...) and suffering? This article will give a critique of the idea of profanation, specifically discussing when teaching deals with social injustice and representations of suffering. (shrink)

SUMMARYThis article provides the first comprehensive and historically genuine analysis of Heinrich Ludwig von Hess's pamphlet Der Republickaner. Hess was an important figure in both the German and Swedish eighteenth-century political context. Firstly, I will show that the proper historiographical context for Hess's pamphlet is Sweden. In previous historiography on the subject it has been argued that Der Republickaner was a comment on the constitutional reality of Hamburg. My article demonstrates that the original context of Hess's pamphlet was the power (...) struggle between King Adolf Frederick of Sweden and the council of the realm. Secondly, I argue that Hess's pamphlet is the most elaborate defence of aristocratic republicanism written in Sweden in the Age of Liberty. As a result, Hess's pamphlet is the fiercest attack on absolutism written in German in the eighteenth century. (shrink)

The author argues that there is no problematic conflict in Hume between philosophical reflection and ordinary life but among "conflicting intuitions at the philosophical level." The return to ordinary belief is not a satisfactory outcome for Hume because Hume thinks that the sceptical stance should be adopted in ordinary life. His realization that he holds unjustifiable beliefs is a philosophical issue that throws light on the nature of belief.

In ordinary life we think that we know many things about the world. I know that I am sitting here. I know that it is not raining. I know that Reagan is President--and many more interesting things. We also think that we know things of a more general sort, e.g., that there are tables, chairs, physical objects, other people. Most of the time, we believe that we have good reasons for our beliefs. Descartes, Hume and Russell, however, as a result (...) of philosophical reflection, discover that we cannot know, nor do we have any good reason for our beliefs. ;Thomas Reid and G. E. Moore reject the sceptic's negative conclusions. They think scepticism is absurd, ridiculous and contrary to common sense. It is contrary to what we believe in ordinary life. These commonsense philosophers do not find the sceptical arguments compelling. They argue that scepticism is not as well supported as the ordinary view that we do know. ;A large part of my dissertation is a defense of scepticism against these commonsense philosophers' objections. I argue that Reid and Moore fail to appreciate the power and significance of scepticism. They fail to understand the relation between philosophical scepticism and ordinary life. A proper understanding of Humean scepticism thwarts any attempt to argue from ordinary life against scepticism. ;Still, I argue that Hume was concerned, indeed distressed, by the conflict between scepticism and ordinary life. But he does not think that conflict casts doubt on the truth of scepticism. I argue that Hume feels "philosophical melancholy" over his discoveries about human nature and the human condition. But his distress is totally at the philosophical level. That is because the recognition of the conflict between ordinary life and philosophical reflection is distressing at the philosophical level. I argue that Hume is right to feel the distress that he does, but I also maintain that he should be dissatisfied with his negative appraisal of our epistemic position, just as we are. ;Reid and Moore are right to be dissatisfied with scepticism, even though their attempts to legitimize that dissatisfaction fail. Their failure to appreciate the nature and importance of scepticism, however, is instructive because it forces us to explain why there is thought to be a problem about knowledge. They force us to express what is indeed difficult to express, namely, what it is that we want to understand when we undertake a philosophical investigation of knowledge. . . . UMI. (shrink)

This book analyses the war against drugs, violence in streets, schools and families, and mining conflicts in Latin America. It examines the nonviolent negotiations, human rights, peacebuilding and education, explores security in cyberspace and proposes to overcome xenophobia, white supremacy, sexism, and homophobia, where social inequality increases injustice and violence. During the past 40 years of the Latin American Council for Peace Research (CLAIP) regional conditions have worsened. Environmental justice was crucial in the recent peace process in Colombia, but also (...) in other countries, where indigenous people are losing their livelihood and identity. Since the end of the cold war, capitalism aggravated the life conditions of poor people. The neoliberal dismantling of the State reduced their rights and wellbeing in favour of enterprises. Youth are not only the most exposed to violence, but represent also the future for a different management of human relations and nature. (shrink)

Clinical photography in the late 19th century aimed at unveiling the hidden processes invisible to the clinical eye. Changes in the outer form hinted at deeper lying causes, and decoding these forms was supposed to extend the range of the clinical eye into the realm of invisibility. Two suppositions supported this hope: the belief that each disease as an ontological entity showed typical exterior signs which allowed a diagnosis at sight, and the technological trust in photography as a precise and (...) objective means of representation superior to the human eye. For a short time, clinical photography seemed to be the “via regia” of diagnosis. Heinrich Curschmann's Klinische Abbildungen and Ludwig Jankau's periodical Internationale medizinisch-photographische Monatsschrift marked the climax of this development in Germany. Röntgen's discovery and its immediate application in clinical medicine put an end to the optimistic expectations: clinical photography was from now on only one among many different means of documenting clinical signs and findings. (shrink)

The last 14 chapters of book 1 of Aristotle's "Prior Analytics" are concerned with the representation in the formal language of syllogistic of propositions and arguments expressed in more or less everyday Greek. In his commentary on those chapters, Alexander of Aphrodisias explains some of Aristotle's more opaque assertions and discusses post-Aristotelian ideas in semantics and the philosophy of language. In doing so he provides an unusual insight into the way in which these disciplines developed in the Hellenistic era. He (...) also shows a more sophisticated understanding of these fields than Aristotle himself, while remaining a staunch defender of Aristotle's emphasis on meaning as opposed to Stoics concern with verbal formulation. In his commentary on the final chapter of book 1 Alexander offers a thorough discussion of Aristotle's distinction between denying that something is, e.g., white and asserting that it is non-white. (shrink)

Resumen: Este artículo tiene por finalidad indagar sobre las representaciones sociales que se tejen en torno de la educación religiosa escolar (ERE). Para ello, se empleó una investigación cualitativa amparada en una perspectiva hermenéutica y un método narrativo desarrollado a través de redes semánticas naturales y análisis de contenido. El trabajo de campo se realizó con una población de estudiantes de dos instituciones educativas de carácter privado, en la ciudad de Popayán. El análisis permitió identificar los aportes de la ERE (...) a los sujetos abordados, la descripción de sinónimos con los cuales se asocia la ERE y algunas temáticas que se deberían abordar en esta área. Estos tránsitos permitieron analizar las variaciones y tendencias que posibilitan la inferencia de su articulación con la dimensión espiritual. Abstract: The purpose of this article is to investigate the social representations that are woven around school religious education (SRE). To do this, the researchers developed a qualitative research based on a hermeneutical perspective and a narrative method developed through natural semantic networks and content analysis. The fieldwork was carried out with a population of students from two private educational institutions in the city of Popayán, Colombia. The analysis made it possible to identify the contributions of the SRE to the subjects approached, the description of synonyms with which the SRE is associated, and some issues that should be addressed in this area. These transits allowed us to analyze the variations and tendencies that make possible the inference of its articulation with the spiritual dimension. (shrink)

An increasingly prevalent approach to studying human cognition is to construe the mind as optimally allocating limited cognitive resources among cognitive processes. Under this bounded rationality approach (Icard in Philos Sci 85(1):79–101, 2018; Simon in Utility and probability, Palgrave Macmillan, 1980), it is common to assume that resource-bounded cognitive agents approximate normative solutions to statistical inference problems, and that much of the bias and variability in human performance can be explained in terms of the approximation strategies we employ. In this (...) paper, we argue that this approach restricts itself to an unnecessarily narrow scope of cognitive models, which limits its ability to explain how humans flexibly adapt their representations to novel environments. We argue that more attention should be paid to how we form our cognitive representations in the first place, and advocate for pluralistic framework which jointly optimizes over both representations and algorithms for manipulating them. We identify several fundamental trade-offs that manifest in this joint optimization, and draw on recent work to motivate a unified formal framework for this analysis. We illustrate a simplified version of this analysis with a case study in social cognition, and outline several new directions for research that this approach suggests. (shrink)

Democracy has been a flawed hegemony since the fall of communism. Its flexibility, its commitment to equality of representation, and its recognition of the legitimacy of opposition politics are all positive features for political institutions. But democracy has many deficiencies: it is all too easily held hostage by powerful interests; it often fails to advance social justice; and it does not cope well with a number of features of the political landscape, such as political identities, boundary disputes, and environmental crises. (...) Although democracy is valuable it fits uneasily with other political values and is in many respects less than equal to the demands it confronts. In this volume prominent political theorists and social scientists present original discussions of such central issues. Democracy's Values deals with the nature and value of democracy, particularly the tensions between it and such goods as justice, equality, efficiency, and freedom. (shrink)

This chapter is concerned with the representation of time and change in classical (i.e., non-quantum) physical theories. One of the main goals of the chapter is to attempt to clarify the nature and scope of the so-called problem of time: a knot of technical and interpretative problems that appear to stand in the way of attempts to quantize general relativity, and which have their roots in the general covariance of that theory. The most natural approach to these questions is via (...) a consideration of more clear cases. So much of the chapter is given over to a discussion of the representation of time and change in other, better understood theories, starting with the most straightforward cases and proceeding through a consideration of cases that lead up to the features of general relativity that are responsible for the problem of time. (shrink)

It is impossible to ignore the enduring and sweeping popularity of young adult novels written with a dystopian, or even apocalyptic, outlook. Series such as Th e Hunger Games, Th e Maze Runner, and Divergent present dark and boding worlds of amplifi ed terror and societal collapse, and their vulnerable protagonists must answer constant environmental, social, and political challenges, or risk starvation, injury, and various formsof pain and suff ering. More frequently than not, the tensions of the dystopian (...) YA universe turn to the natural world, one of sustenance and renewal, for resolution. The continued popularity of dystopian fi ction written expressly for young adult readers requires critical examination, as teachers must prepare themselves to deal with the questions raised by these texts. Th e trend toward the dystopian seems like rather a bleak expression of political and social hopelessness, but it does off er certain insights into what young readers want from the world around them. Much of the appeal of the dystopian comes from imagining not just problems, but how to solve them. The ingenuity and resourcefulness displayed in dystopian YA novels is not only appealing, but becomes a bold and ultimately optimistic statement on the need for environmental and social sustainability. The optimal incorporation of dystopian YA into the English as a foreign language curriculum relies on the preparation of instruction as understood by Wolfgang Klafki in a mode and format that feels fresh and encourages student-led engagement, genuine multimodality, and an organic progression from the closed circle of the classroom to the open arena of adult civilization. (shrink)

Much debate about scientific realism concerns the issue of whether it is compatible with theory change over time. Certain forms of ‘selective realism’ have been suggested with this in mind. Here I consider a closely related challenge for realism: that of articulating how a theory should be interpreted at any given time. In a crucial respect the challenges posed by diachronic and synchronic interpretation are the same; in both cases, realists face an apparent dilemma. The thinner their interpretations, the easier (...) realism is to defend, but at the cost of more substantial commitment. The more substantial their interpretations, the more difficult they are to defend. I consider this worry in the context of the Standard Model of particle physics. Examining some selective realist attempts at interpretation, I argue that realism is, in fact, compatible with different commitments on the spectrum of thinner to more substantial, thus mitigating the dilemma. (shrink)

The papers collected in this volume exemplify some of the trends in current approaches to logic, language and computation. Written by authors with varied academic backgrounds, the contributions are intended for an interdisciplinary audience. The first part of this volume addresses issues relevant for multi-agent systems: reasoning with incomplete information, reasoning about knowledge and beliefs, and reasoning about games. Proofs as formal objects form the subject of Part II. Topics covered include: contributions on logical frameworks, linear logic, and different approaches (...) to formalized reasoning. Part III focuses on representations and formal methods in linguistic theory, addressing the areas of comparative and temporal expressions, modal subordination, and compositionality. (shrink)

Much recent cognitive neuroscientific work on body knowledge is representationalist: “body schema” and “body images”, for example, are cerebral representations of the body (de Vignemont 2009). A framework assumption is that representation of the body plays an important role in cognition. The question is whether this representationalist assumption is compatible with the variety of broadly situated or embodied approaches recently popular in the cognitive neurosciences: approaches in which cognition is taken to have a ‘direct’ relation to the body and (...) to the environment. A “direct” relation is one where the boundaries between the body and the head, or between the environment and the animal are not theoretically important in the understanding of cognition. These boundaries do not play a theoretically privileged role in cognitive explanations of behavior. But representationalism appears to put a representational veil between the locus of cognition and that which is represented, making cognitive relations to the body and to the environment be indirect, with a high associated computational load. For this reason, direct approaches have tried to minimize the use of internal representations (Suchman 1987; Barwise 1987; Agre and Chapman 1987; Brooks 1992; Thelen and Smith 1994; van Gelder 1995; Port and van Gelder 1995; Clark 1997, 1999; Rupert 2009, p. 180). Does a cognitive neuroscience committed to direct relations rule out a representationalist approach to body knowledge? Or is direct representationalism possible? (shrink)

El gran zoo (1984), del poeta cubano Nicolás Guillén, ofrece distintas representaciones sobre el Caribe. El artículo argumenta que el texto de Nicolás Guillén se inscribe dentro del movimiento literario hispanoamericano de la neovanguardia. Luego, se examinan algunas características formales del texto, tomando como ejemplo los poemas “El sueño” y “Guitarra”. Otro poema que se estudia con más detenimiento es “El tenor”, el cual parodia la división entre la alta cultura y la cultura popular. Por último, se analizan varias alusiones (...) del poemario al contexto histórico de la Guerra Fría y la Carrera Espacial. (shrink)

How did the events of the early modern period affect the way gender and the self were represented? This collection of essays attempts to respond to this question by analysing a wide spectrum of cultural concerns - humanism, technology, science, law, anatomy, literacy, domesticity, colonialism, erotic practices, and the theatre - in order to delineate the history of subjectivity and its relationship with the postmodern fragmented subject. The scope of this analysis expands the terrain explored by feminist theory, while its (...) feminist focus reveals that the subject is always gendered - although the terms in which gender is conceived and represented change across history. Feminist Readings of Early Modern Culture not only explores the representation of gendered subjects, but in its commitment to balancing the productive tensions of methodological diversity, also speaks to contemporary challenges facing feminism. (shrink)

Readers of Hobbes have often seen his Leviathan as a deeply paradoxical work. On one hand, recognizing that no sovereign could ever wield enough coercive power to maintain social order, the text recommends that the state enhance its power ideologically, by tightly controlling the apparatuses of public discourse and socialization. The state must cultivate an image of itself as a mortal god of nearly unlimited power, to overpower its subjects and instil enough fear to win obedience. On the other hand, (...) by drawing explicit attention to the ideological and partly illusory bases of the state’s power, Leviathan, itself construed as a political intervention designed to appeal to a broad English readership, appears to undermine the very program it recommends. Indeed, many have argued that Leviathan’s substantive political-philosophical doctrine is flatly at odds with the authority that Hobbes claimed for himself in order to advance that doctrine. The paradox, I argue, is only an apparent one. Precisely because Hobbes believed that in practice no one could ever become the mortal god that sovereignty requires, i.e., that the seat of sovereignty could never actually be securely occupied and fully represented by a mere mortal, he sought constantly to remind his readers of the precariousness of earthly sovereignty by pointing to its illusory basis. Far from seeking to undermine the sovereign, however, this reminder was designed to enhance readers’ fears, especially the fear that, despite the security they may enjoy today, the slightest misstep may lead them straight into the horrors of the state of nature. Hobbes’s purpose was, in other words, to enhance the sovereign’s power, not by enhancing our fear of him, but of his absence. Ironically, this is also in part why Hobbes insisted on the individual’s inalienable right of self-defence, an insistence that has puzzled many of his readers, given Hobbes’s obvious wish to defend absolute, unlimited sovereignty. Its political function is not to provide a covert justification for resistance theories. Rather, by reminding his readers of their right but doing so while addressing them as isolated atoms whose resistance would be hopeless, Hobbes sought to remind each one of the ultimate impossibility of securely filling the seat of sovereignty, without encouraging anyone actually to resist the most promising pretender. Like God-talk, Hobbes’s representations of sovereign power do not ultimately comprise descriptive propositions at all: they are expressions of praise and honour designed to help create the very thing they purport to describe. Hobbes was keenly aware that indivisible state sovereignty is an ideological construct whose terms are never ever fully realized in practice. (shrink)

Often philosophers, logicians, and mathematicians employ a notion of intended structure when talking about a branch of mathematics. In addition, we know that there are foundational mathematical theories that can find representatives for the objects of informal mathematics. In this paper, we examine how faithfully foundational theories can represent intended structures, and show that this question is closely linked to the decidability of the theory of the intended structure. We argue that this sheds light on the trade-off between expressive power (...) and meta-theoretic properties when comparing first-order and second-order logic. (shrink)

Representing species-specific proteins and protein complexes in ontologies that are both human and machine-readable facilitates the retrieval, analysis, and interpretation of genome-scale data sets. Although existing protin-centric informatics resources provide the biomedical research community with well-curated compendia of protein sequence and structure, these resources lack formal ontological representations of the relationships among the proteins themselves. The Protein Ontology (PRO) Consortium is filling this informatics resource gap by developing ontological representations and relationships among proteins and their variants and modified (...) forms. Because proteins are often functional only as members of stable protein complexes, the PRO Consortium, in collaboration with existing protein and pathway databases, has launched a new initiative to implement logical and consistent representation of protein complexes. We describe here how the PRO Consortium is meeting the challenge of representing species-specific protein complexes, how protein complex representation in PRO supports annotation of protein complexes and comparative biology, and how PRO is being integrated into existing community bioinformatics resources. The PRO resource is accessible at http://pir.georgetown.edu/pro/. (shrink)

This paper reconsiders Ockham's critique of the species theory of cognition. As Ockham understands this theory, it says that the direct objects of cognition are mental representations, or species. According to many commentators, one of Ockham's main objections to this theory was that, if the direct objects of cognition are species rather than external objects, we will never be able to establish whether or not a given species is a veridical representation of the world. In this paper I argue (...) that this line of interpretation sits uneasily with Ockham's epistemology, and offer a new interpretation of Ockham's critique of species. (shrink)

In this paper we consider persuasion in the context of practical reasoning, and discuss the problems associated with construing reasoning about actions in a manner similar to reasoning about beliefs. We propose a perspective on practical reasoning as presumptive justification of a course of action, along with critical questions of this justification, building on the account of Walton. From this perspective, we articulate an interaction protocol, which we call PARMA, for dialogues over proposed actions based on this theory. We outline (...) an axiomatic semantics for the PARMA Protocol, and discuss two implementations which use this protocol to mediate a discussion between humans. We then show how our proposal can be made computational within the framework of agents based on the Belief-Desire-Intention model, and illustrate this proposal with an example debate within a multi agent system. (shrink)

Representations of monadic MV -algebra, the characterization of locally finite monadic MV -algebras, with axiomatization of them, definability of non-trivial monadic operators on finitely generated free MV -algebras are given. Moreover, it is shown that finitely generated m-relatively complete subalgebra of finitely generated free MV -algebra is projective.

This paper outlines some key issues that arise when agency and temporality are considered jointly, from the perspective of psychology, cognitive neuroscience, phenomenology, and action theory. I address the difference between time simpliciter and time as represented as it figures in phenomena like intentional binding, goal-oriented action plans, emulation systems, and ‘temporal agency’. An examination of Husserl’s account of time consciousness highlights difficulties in generalizing his account to include a substantive notion of agency, a weakness inherited by explanatory projects like (...) neurophenomenology. I conclude by sketching a project analogous to the projects in neurophenomenology, based on Thompson’s naïve action theory. (shrink)

In some recent papers (G. ‘t Hooft and others), it has been argued that quantum mechanics can arise from classical cellular automata. Nonetheless, G. Shpenkov has proved that the classical wave equation makes it possible to derive a periodic table of elements, which is very close to Mendeleyev’s one, and describe also other phenomena related to the structure of molecules. Hence the classical wave equation complements Schrödinger’s equation, which implies the appearance of a cellular automaton molecular model starting from classical (...) wave equation. The other studies show that the microworld is constituted as a tessellation of primary topological balls. The tessellattice becomes the origin of a submicrospic mechanics in which a quantum system is subdivided to two subsystems: the particle and its inerton cloud, which appears due to the interaction of the moving particle with oncoming cells of the tessellattice. The particle and its inerton cloud periodically change the momentum and hence move like a wave. The new approach allows us to correlate the Klein-Gordon equation with the deformation coat that is formed in the tessellatice around the particle. The submicroscopic approach shows that the source of any type of wave movements including the Klein-Gordon, Schrödinger, and classical wave equations is hidden in the tessellattice and its basic exciations – inertons, carriers of mass and inert properies of matter. We also discuss possible correspondence with Konrad Zuse’s calculating space. (shrink)

Georges Rey presents a much-needed philosophical defense of Noam Chomsky's famous view of human language, as an internal, innate computational system. But he also offers a critical examination of problematic developments of this view, to do with innateness, ontology, intentionality, and other issues of interdisciplinary interest.

I address an interesting puzzle of how marginalized groups gain self-representation and influence firms’ strategies. Accordingly, I examine the case of access to low-cost HIV/AIDS drugs in South Africa by integrating W. E. B. Du Bois’s work into stakeholder theory. Du Bois’s scholarly work, most notably his founding contribution to Black scholarship, has profound significance in the humanities and social sciences disciplines and vast potential to inspire a new way of thinking and doing research in the management and organization fields, (...) including business ethics research. By drawing on Du Bois’s works, I argue that through reconstruction of their selves—knowing their souls—marginalized groups know their capabilities better, enabling them to overcome their political and strategic limitations and ensure their true self-representation. They are also empowered to use political imagination and strategies of resistance against more powerful opponents. This influences powerful actors to accept the demands of marginalized groups. (shrink)

Representations of science and technology, embodied as imaginaries, visions, and expectations, have become a growing focus of analysis. These representations are of interest to normative approaches to science and technology, such as Hermeneutic Technology Assessment and Responsible Innovation, because of their ability to modulate understandings of science and technology and to influence scientific and technological development. This article analyses the culture of participation underlying the NanoKOMIK project and the representations and meanings of (nano)science and (nano)technology communicated in (...) the two nano-fiction comic books created as part of the project: _Dayanne and Murillo. The power of nanoscience_ (2016) and _NanoKOMIK #2_ (2017). The article argues that despite NanoKOMIK’s efforts to engage the public with (nano)science and (nano)technology, it reproduces non-binding modes of public participation and transmits socio-technical meanings that are instrumental in the social legitimisation of (nano)technology. More specifically, the analysis shows that NanoKOMIK’s comic books, in addition to not problematising the risks and conveying an eminently positive view of nanotechnology, also communicate certain ‘myth-conceptions’ of scientific activity and its products. For example, they convey an individualistic and linear vision of research and innovation and an instrumentalist and neutral (or ‘value-free’) view of technology. These findings highlight the importance of critically analysing the ‘cultures of participation’ that characterise and reproduce ‘participatory’ or ‘collaborative’ projects and the representations of (nano)science and (nano)technology that they perpetuate. (shrink)

Microphotography was one of the earliest applications of photography in science: The first monograph on tissue organization illustrated with microphotographs was published in 1845. In the 1860s, a large number of introductions to scientific microphotography were published by anatomists. They argued that microphotography was a means of documenting the results of microscopic analysis, uncontaminated by the subjectivity of the observer. In the early decades of the 19th century, before the general acceptance of cell theory, such a technique was of special (...) importance, as no criteria were available to distinguish between important and superficial characters in the description of tissue microstructures. Microphotography was praised as the method of choice for documenting the scientific observations of microscopic material. Some of the microphotographic practices described in these early manuals, however, did not conform with the idea of a purely mechanical process of documentation. The authors of these manuals saw photography not as a technique which produced artifacts, but as a complete and reliable substitute for the original preparations. Thus, according to these authors, the artificial world of photography was seen as the actual representation of the microworld. Consequently, they tried to understand the microcosm by analyzing photographs instead of the microscopic preparation themselves. Such attitudes discredited the use of microphotography in the sciences. Consequently, the definitive breakthrough of scientific microphotography was delayed until the 1880s and was largely due to the efforts of Robert Koch, who made microphotography a central tool of bacteriology. (shrink)

Evidence from functional neuroimaging of the human brain indicates that information about salient properties of an object¿such as what it looks like, how it moves, and how it is used¿is stored in sensory and motor systems active when that information was acquired. As a result, object concepts belonging to different categories like animals and tools are represented in partially distinct, sensory- and motor property-based neural networks. This suggests that object concepts are not explicitly represented, but rather emerge from weighted activity (...) within property-based brain regions. However, some property-based regions seem to show a categorical organization, thus providing evidence consistent with category-based, domain-specific formulations as well.Acronyms and DefinitionsBiological motion: motion of animate agents characterized by highly flexible, fully articulated motion vectors, in contrast to the rigid, unarticulated motion vectors associated with most tools.Category-specific disorder: a relatively greater impairment in retrieving information about members of one superordinate object category (e.g., animals) as compared with other categories following brain injury or diseaseIPS: intraparietal sulcusLO: lateral occipital cortexObject concept: memory representations of a class or category of objects. Necessary for numerous cognitive functions including identifying an object as a member of a specific category and drawing inferences about object propertiespMTG: posterior middle temporal gyruspSTS: posterior superior temporal sulcusRepetition suppression: decreased neural response associated with repeated presentation of an identical, or a semantically/conceptually related, stimulusSD: semantic dementiaSemantic memory: a large division of long-term memory containing knowledge about the world including facts, ideas, beliefs, and conceptsSemantic priming: a short-lasting facilitation in processing a stimulus due to the prior presentation of a semantically related stimulusTMS: transcranial magnetic stimulationVPMC: ventral premotor cortex. (shrink)

This dissertation interprets the lack of uniqueness in probability representations of agents' degrees of belief in the decision theory of Richard Jeffrey as a formal statement of an important epistemological problem: the underdetermination of our attributions of belief and desire to agents by the evidence of their observed behaviour. A solution is pursued through investigation of agents' attitudes to information of a conditional nature. ;As a first step, Jeffrey's theory is extended to agents' conditional attitudes of belief and desire (...) by introduction of a definition of conditional desirability. The second step is an analysis of agents' attitudes to conditionals. Following Adams it is argued that the probability of a conditional is the conditional probability of its consequent given the antecedent. Since numerous 'trivialization' results show that no proposition could be such that this were the case, it is proposed that conditionals express a variable proposition as a function of the context in which they are asserted. The consequent technical treatment of conditionals as proposition-valued functions of sets of possible worlds delivers Adams' thesis as a natural consequence without fear of trivialization. ;Conditionals are the underlying objects of the decision theory that is presented in the final chapter. A representation theorem is proven for preferences defined over sets of such conditionals satisfying certain closure conditions, where an agent is understood to prefer one conditional over another just in case she prefers that the former by true rather than the latter. The theorem establishes that a rational preference ranking of conditionals implies the existence of a unique probability function and a desirability function unique up to choice of scale, that agree with the preference ranking, and that these functions satisfy both the axioms of Jeffrey's decision calculus and Adams' thesis. The theorem is interpreted as saying that elicitation of an agent's choices amongst conditional options suffices to determine our attributions of belief and desire to them. (shrink)

This article examines the effect of material evidence upon historiographic hypotheses. Through a series of successive Bayesian conditionalizations, I analyze the extended competition among several hypotheses that offered different accounts of the transition between the Bronze Age and the Iron Age in Palestine and in particular to the “emergence of Israel”. The model reconstructs, with low sensitivity to initial assumptions, the actual outcomes including a complete alteration of the scientific consensus. Several known issues of Bayesian confirmation, including the problem of (...) old evidence, the introduction and confirmation of novel theories and the sensitivity of convergence to uncertain and disputed evidence are discussed in relation to the model’s result and the actual historical process. The most important result is that convergence of probabilities and of scientific opinion is indeed possible when advocates of rival hypotheses hold similar judgment about the factual content of evidence, even if they differ sharply in their historiographic interpretation. This speaks against the contention that understanding of present remains is so irrevocably biased by theoretical and cultural presumptions as to make an objective assessment impossible. (shrink)

We investigate ideals of the form {A⊆ω: Σn∈Axnis unconditionally convergent} where n∈ωis a sequence in a Polish group or in a Banach space. If an ideal onωcan be seen in this form for some sequence inX, then we say that it is representable inX.After numerous examples we show the following theorems: An ideal is representable in a Polish Abelian group iff it is an analytic P-ideal. An ideal is representable in a Banach space iff it is a nonpathological analytic P-ideal.We (...) focus on the family of ideals representable inc0. We characterize this property via the defining sequence of measures. We prove that the trace of the null ideal, Farah’s ideal, and Tsirelson ideals are not representable inc0, and that a tallFσP-ideal is representable inc0iff it is a summable ideal. Also, we provide an example of a peculiar ideal which is representable inℓ1but not in ℝ.Finally, we summarize some open problems of this topic. (shrink)

Arguably the most foundational principle in perception research is that our experience of the world goes beyond the retinal image; we perceive the distal environment itself, not the proximal stimulation it causes. Shape may be the paradigm case of such “unconscious inference”: When a coin is rotated in depth, we infer the circular object it truly is, discarding the perspectival ellipse projected on our eyes. But is this really the fate of such perspectival shapes? Or does a tilted coin retain (...) an elliptical appearance even when we know it’s circular? This question has generated heated debate from Locke and Hume to the present; but whereas extant arguments rely primarily on introspection, this problem is also open to empirical test. If tilted coins bear a representational similarity to elliptical objects, then a circular coin should, when rotated, impair search for a distal ellipse. Here, nine experiments demonstrate that this is so, suggesting that perspectival shapes persist in the mind far longer than traditionally assumed. Subjects saw search arrays of three-dimensional “coins,” and simply had to locate a distally elliptical coin. Surprisingly, rotated circular coins slowed search for elliptical targets, even when subjects clearly knew the rotated coins were circular. This pattern arose with static and dynamic cues, couldn’t be explained by strategic responding or unfamiliarity, generalized across shape classes, and occurred even with sustained viewing. Finally, these effects extended beyond artificial displays to real-world objects viewed in naturalistic, full-cue conditions. We conclude that objects have a remarkably persistent dual character: their objective shape “out there,” and their perspectival shape “from here.”. (shrink)

The representation of physics problems in relation to the organization of physics knowledge is investigated in experts and novices. Four experiments examine the existence of problem categories as a basis for representation; differences in the categories used by experts and novices; differences in the knowledge associated with the categories; and features in the problems that contribute to problem categorization and representation. Results from sorting tasks and protocols reveal that experts and novices begin their problem representations with specifiably different problem (...) categories, and completion of the representations depends on the knowledge associated with the categories. For, the experts initially abstract physics principles to approach and solve a problem representation, whereas novices base their representation and approaches on the problem's literal features. (shrink)