Research heuristics—implicit rules used to guide work on a scientific problem—are explored for their role in guiding psychological research. Work on the psychology of creativity is used to illustrate how heuristics have guided research. We examine the influence of three heuristics: the trilogy-of-mind heuristic, the emotions-as-moods heuristic, and the analysis-of-variance heuristic. This analysis of multiple heuristics provides a new way to understand the state of research on creativity. In the discussion, the analysis is extended to other heuristics and to how (...) heuristics may help as well as hinder innovative research. (shrink)

First-ever comprehensive introduction to the major new subject of quantum computing and quantum information.

In this paper I offer an analysis of Plotinus’ argument for the existence of a quasi-psychic entity, the so-called ‘trace of soul’, that functions as an immanent cause of life for an organism’s body. I argue that Plotinus posits this entity primarily in order to account for the body’s possession of certain quasi-psychic states that are instrumental in his account of soul-body interaction. Since these quasi-psychic states imply that an organism’s body has vitality of its own , and Platonic souls (...) are no part or aspect of any body, Plotinus draws the conclusion that the soul must be a cause of the body’s life by imparting a quasi-psychic qualification to it. In so doing, Plotinus introduces elements of hylomorphism into Platonist psychology, and addresses a problem for the animation of the body that Platonic soul-body dualism may plausibly be thought to face. (shrink)

How to accept a conditional? F. P. Ramsey proposed the following test in (Ramsey 1990).(RT) If A, then B must be accepted with respect to the current epistemic state iff the minimal hypothetical change of it needed to accept A also requires accepting B.

Traces the decentered formulation of self at the heart of Paul Ricoeur's philosophy from his earliest works to his most recent.

Mechanism realists assert the existence of mechanisms as objective structures in the world, but their exact metaphysical commitments are unclear. We introduce Local Hierarchy Realism (LHR) as a substantive and plausible form of mechanism realism. The limits of LHR reveal a deep tension between two aspects of mechanists’ explanatory strategy. Functional decomposition identifies locally relevant entities and activities, while these same entities and activities are also embedded in a nested hierarchy of levels. In principle, a functional decomposition may identify entities (...) engaging in causal interactions that crosscut the hierarchical structure of composition relations, violating the mechanist’s injunction against interlevel causation. We argue that this possibility is realized in the example of ephaptic coupling, a subsidiary process of neural computation that crosscuts the hierarchy derived from synaptic transmission. These considerations undermine the plausibility of LHR as a general view, yet LHR has the advantages that (i) its metaphysical implications are precisely stateable; (ii) the structure it identifies is not reducible to mere aggregate causation; and (iii) it clearly satisfies intuitive and informal definitions of mechanism. We conclude by assessing the prospects for a form of mechanism realism weaker than LHR that nevertheless satisfies all three of these requirements. (shrink)

We present a decision-theoretically motivated notion of contraction which, we claim, encodes the principles of minimal change and entrenchment. Contraction is seen as an operation whose goal is to minimize loses of informational value. The operation is also compatible with the principle that in contracting A one should preserve the sentences better entrenched than A (when the belief set contains A). Even when the principle of minimal change and the latter motivation for entrenchment figure prominently among the basic intuitions in (...) the works of, among others, Quine and Ullian (1978), Levi (1980, 1991), Harman (1988) and Gärdenfors (1988), formal accounts of belief change (AGM, KM – see Gärdenfors (1988); Katsuno and Mendelzon (1991)) have abandoned both principles (see Rott (2000)). We argue for the principles and we show how to construct a contraction operation, which obeys both. An axiom system is proposed. We also prove that the decision-theoretic notion of contraction can be completely characterized in terms of the given axioms. Proving this type of completeness result is a well-known open problem in the field, whose solution requires employing both decision-theoretical techniques and logical methods recently used in belief change. (shrink)

A foundational idea of evo‐devo is that morphological variation is not isotropic, that is, it does not occur in all directions. Instead, some directions of morphological variation are more likely than others from DNA‐level variation and these largely depend on development. We argue that this evo‐devo perspective should apply not only to morphology but to evolution at all phenotypic levels. At other phenotypic levels there is no development, but there are processes that can be seen, in analogy to development, as (...) constructing the phenotype (e.g., protein folding, learning for behavior, etc.). We argue that to explain the direction of evolution two types of arguments need to be combined: generative arguments about which phenotypic variation arises in each generation and selective arguments about which of it passes to the next generation. We explain how a full consideration of the two types of arguments improves the explanatory power of evolutionary theory. Also see the video abstract here: https://youtu.be/Egbvma_uaKc. (shrink)

The paper includes a series of letters exchanged between the author and the late Professor Feyerabend, concerning the best "method" for military intelligence, as a test case for the role of conceptual frameworks in philosophy of science. The letters deal with issues like: Is it possible to make an intelligence estimate without a conceptual framework? Does such a framework have any 'positive' role? If so, how should a conceptual framework in intelligence be built? What risks lurk within it? Is it (...) possible to indicate methods for intelligence estimates which are 'better' and more 'successful' than others? (shrink)

The present paper shows how one might model Everettian quantum mechanics using hyperfinitely many worlds. A hyperfinite model allows one to consider idealized measurements of observables with continuous-valued spectra where different outcomes are associated with possibly infinitesimal probabilities. One can also prove hyperfinite formulations of Everett’s limiting relative-frequency and randomness properties, theorems he considered central to his formulation of quantum mechanics. Finally, this model provides an intuitive framework in which to consider no-collapse formulations of quantum mechanics more generally.

In this paper, I investigate the foundations of Plotinus’ innovative theory that prime matter is unaffectable. I begin by showing that Plotinus’ main arguments for this thesis (in Ennead 3.6) all rely upon the controversial assumption that the properties prime matter underlies are not properties of prime matter itself. It is then argued that prime matter’s privation of sensible qualities has its conceptual basis in an idiosyncratic understanding of form-matter composition generally, and its primary doctrinal basis in Aristotle’s critical reports (...) on the Platonists’ substratum in Physics 1.9. While Plotinus finds Platonic authority for unaffectible matter in the Receptacle passage of the Timaeus, it is Aristotle’s testimony that provides the crucial impetus for reading that text in this way. On this basis, Plotinus develops a Platonist conception of form’s inherence in matter with distinctively non-Aristotelian features. (shrink)

Plotinus maintains that there is a single first principle, the One (or the Good), from which all other things derive. He is usually thought to hold this view on the grounds that any other thing’s existence depends on its participation in a paradigm of unity. This paper argues that Plotinus has a further, independent argument for adopting a single first principle, according to which principle pluralism is committed (unacceptably) to attributing good cosmic states of affairs to chance. This argument exhibits (...) similarities to ancient design arguments, but is used to draw the more radical conclusion that there is only one non-derivative existent. (shrink)

In the age of the `return to the empirical' in which the theoretical disputes of an earlier era seem to have fallen silent, we seek to excavate the intellectual conditions for reviving theoretical debate, for it is upon this recovery that deeper understanding of the nature and purpose of empirical social science depends. We argue against the all too frequent turn to ontology, whereby critical realists have sought an epistemological guarantor of sociological validity. We seek, to the contrary, to crystallize (...) a culturally-based, hermeneutic account of a rational social science. Derived from disputes within the sociology of culture, on the one hand, and the long-standing concerns of interpretive philosophy, on the other, we offer a cultural-sociological approach to epistemology. We view the production of truth in social science as a reading of a meaningful social world, and as a performance of truth-claims that is constrained by evidence, but whose success depends on other contextual factors. We conclude that the rationality of social science can be achieved only by forgoing ontology. Theories are abstractions of investigators' meanings that allow the interpretation of social meanings in turn, whether those are actions, relations, or structures. Successful explanations are those that intertwine these meaning structures of investigators and actors in an effective way. (shrink)

In developing his theory of aether in De Caelo 1, Aristotle argues, in DC 1.4, that one circular motion cannot be contrary to another. In this paper, I discuss how Aristotle can maintain this position and accept the existence of celestial spheres that rotate in contrary directions, as he does in his revision of the Eudoxan theory in Metaphysics 12.8.

Mechanism realists assert the existence of mechanisms as objective structures in the world, but their exact metaphysical commitments are unclear. We introduce Local Hierarchy Realism (LHR) as a substantive and plausible form of mechanism realism. The limits of LHR reveal a deep tension between two aspects of mechanists’ explanatory strategy. Functional decomposition identifies locally relevant entities and activities, while these same entities and activities are also embedded in a nested hierarchy of levels. In principle, a functional decomposition may identify entities (...) engaging in causal interactions that crosscut the hierarchical structure of composition relations, violating the mechanist’s injunction against interlevel causation. We argue that this possibility is realized in the example of ephaptic coupling, a subsidiary process of neural computation that crosscuts the hierarchy derived from synaptic transmission. These considerations undermine the plausibility of LHR as a general view, yet LHR has the advantages that (i) its metaphysical implications are precisely stateable; (ii) the structure it identifies is not reducible to mere aggregate causation; and (iii) it clearly satisfies intuitive and informal definitions of mechanism. We conclude by assessing the prospects for a form of mechanism realism weaker than LHR that nevertheless satisfies all three of these requirements. (shrink)

Récit de la rencontre à Port-Royal-des-Champs en janvier 1655 entre Lemaistre de Sacy, théologien janséniste, et Pascal, jeune philosophe et savant reconnu. Sacy, soucieux de préserver la foi, proscrit la lecture et l'usage de la philosophie alors que Pascal trouve chez Epictète la grandeur de l'homme soumis à la volonté de Dieu et, chez Montaigne, la misère de l'homme submergé par l'incertitude.

For many Enlightenment thinkers, discerning the relationship between commerce and peace was the central issue of modern politics. The logic of commerce seemed to require European states and empires to learn how to behave in more peaceful, self-limiting ways. However, as the fate of nations came to depend on the flux of markets, it became difficult to see how their race for prosperity could ever be fully disentangled from their struggle for power. On the contrary, it became easy to see (...) how this entanglement could produce catastrophic results. This volume showcases the variety and the depth of approaches to economic rivalry and the rise of public finance that characterized Enlightenment discussions of international politics. It presents a fundamental reassessment of these debates about 'perpetual peace' and their legacy in the history of political thought. (shrink)

When Istvan Hont died in 2013, the world lost a giant of intellectual history. A leader of the Cambridge School of Political Thought, Hont argued passionately for a global-historical approach to political ideas. To better understand the development of liberalism, he looked not only to the works of great thinkers but also to their reception and use amid revolution and interstate competition. His innovative program of study culminated in the landmark 2005 book Jealousy of Trade, which explores the birth of (...) economic nationalism and other social effects of expanding eighteenth-century markets. Markets, Morals, and Politics brings together a celebrated cast of Hont's contemporaries to assess his influence, ideas and methods. Richard Tuck, John Pocock, John Dunn, Raymond Geuss, Gareth Stedman Jones, Michael Sonenscher, John Robertson, Keith Tribe, Pasquale Pasquino, and Peter N. Miller contribute original essays on themes Hont treated with penetrating insight. (shrink)

Though one could not exhaustively and conclusively define all the attributes of an information/knowledge society, it seems Uganda has made commandable strides to such society. One of the prerequisites of such society is a corps of well-educated, trained and experienced information professionals to manage information and knowledge effectively in that society. Furthermore, the corps must perform professionally and ethically at all times. To fulfill this, an Information Code of Ethics is required. However, Uganda has as yet to establish an ICE (...) because of some reasons. These reasons are outlined in the paper. The ICE has two as-pects: theory and practice. These concepts are explained and related. The LA and the Chartered Institute of Library and Information Professions formerly the LA are studied as living examples. The provisions of these ICEs are briefly explained. In view of the past experience a process of establishing an IME for Uganda is considered. The paper concludes with an outline of the content of an IME for Uganda. (shrink)

Although computational models of cognitive agents that incorporate a wide range of cognitive functionalities have been developed in cognitive science, most of the work in social simulation still assumes rudimentary cognition on the part of the agents. In contrast, in this work, the interaction of cognition and social structures/processes is explored, through simulating survival strategies of tribal societies. The results of the simulation demonstrate interactions between cognitive and social factors. For example, we show that cognitive capabilities and tendencies may be (...) relevant to what social institutions may be adopted. This work points to a cognitively based approach towards social simulation, as well as a new area of research—exploring the cognitive–social interaction through cognitively based social simulation. (shrink)

We consider the complexity (in terms of the arithmetical hierarchy) of the various quantifier levels of the diagram of a computably presented metric structure. As the truth value of a sentence of continuous logic may be any real in [0, 1], we introduce two kinds of diagrams at each level: the closed diagram, which encapsulates weak inequalities of the form $$\phi ^\mathcal {M}\le r$$, and the open diagram, which encapsulates strict inequalities of the form $$\phi ^\mathcal {M}< r$$. We show (...) that the closed and open $$\Sigma _N$$ diagrams are $$\Pi ^0_{N+1}$$ and $$\Sigma ^0_N$$ respectively, and that the closed and open $$\Pi _N$$ diagrams are $$\Pi ^0_N$$ and $$\Sigma ^0_{N + 1}$$ respectively. We then introduce effective infinitary formulas of continuous logic and extend our results to the hyperarithmetical hierarchy. Finally, we demonstrate that our results are optimal. (shrink)

A replicator is simply something that makes copies of itself. There are hypothetical replicators (e.g., self-catalyzing chemical cycles) that are suspected to be unable to exhibit heritable variation. Variation in any of their constituent molecules would not lead them to produce offspring with those new variant molecules. Copying, such as in DNA replication or in xerox machines, allows any sequence to be remade and then sequence variations to be inherited. This distinction has been used against non-RNA-world hypotheses: without RNA replication (...) systems have no capacity to exhibit heritable variation. However, is copying the only way to have heritable variation? This article suggests that evolution can happen without anything being copied and that, in fact, RNA copying is too complex to arise spontaneously as the first pre-biotic system. There would then be a historical gradation of systems from non-alive to alive in which the capacity to have heritable changes would progressively increase and in which copying, as in template-based RNA-replication, would be a crucial but relatively late event. In addition, this article proposes a way by which RNA replication could have arisen, after systems able to evolve arose, as a crucial innovation and how that innovation spread over existing evolutionary systems and became a major driver of subsequent evolution. (shrink)

En oposición al escepticismo declarado por Callender y Cohen respecto de la existencia de algún problema en torno a la representación científica, el objetivo de este artículo es mostrar un conjunto de características peculiares de la representación científica, aunque no exclusivas, que una teoría satisfactoria debe explicar. Estas son: la predicación, la posibilidad de ser una representación incorrecta, el razonamiento subrogatorio y la independencia entre el contenido y la denotación. Además, se argumenta que una teoría satisfactoria de la representación debe (...) ofrecer una definición de sus medios representacionales, es decir, de lo que es un modelo científico. Finalmente, se propone que para dar cuenta de estas características basta responder la pregunta: ¿Cómo nos permiten los modelos científicos ganar información sobre el objeto representado? (shrink)

Busca identificar as produções acadêmicas dos egressos dos cursos de mestrado e doutorado do Programa de Pós-graduação em Ciência da Informação da Universidade Federal da Paraíba que possuem eixos temáticos relacionados às tecnologias da informação e comunicação, a fim de subsidiar a inquietação que originou a questão norteadora da pesquisa, a saber: Existe interesse dos pesquisadores da CI em discutir criticamente acerca da fundamentação, consistência e qualidade das informações produzidas e compartilhadas perante o alto índice de produção e disseminação ocasionado (...) pelo avanço das TICs e, que trazem em sua essência posicionamentos críticos-reflexivos quanto à produção, uso e compartilhamento das informações diante do progresso dessas tecnologias. A pesquisa traz resultados quantitativos e qualitativos sobre os discentes e docentes do PPGCI/UFPB quanto aos interesses e posicionamentos críticos dos seus pesquisadores. Enfatiza a preocupação com a necessidade de habilitar os usuários das TICs para melhor aproveitar a dinamicidade e a capacidade produtiva e de compartilhamento resultantes dos avanços tecnológicos. (shrink)

The Mexican cult around the image of the Virgin of Tepeyac is commonly addressed in relation with creole nationalism, but that emphasis ignores the survival of its cult until today. Given that construction of identity through ‘miraculous’ images persists through technologies of iconic deployment, it is necessary to examine the original functions of its technologies. I investigate these problems by considering the construction of a newexhibition site for the Virgin of Tepeyac, and the modalities of reproducing the image until today. (...) The historical comparison of these contemporary techniques with those of the seventeenth century enables to appreciate the coherence of this visual tradition and its importance to the construction of social processes in Mexico. (shrink)

Purpose: The purpose of this article is to examine the unique challenges faced by choir directors in Ghana and provide recommendations for managing and thriving in this context. It aims to highlight the importance of resilience, resourcefulness, and cultural sensitivity in navigating the funding constraints, limited resources, intense competition, and cultural expectations that characterize the Ghanaian choir environment. Methodology: The methodology used in this article is not explicitly stated. However, the recommendations and insights provided are based on a combination of (...) scholarly research, professional experiences, and observations related to choir management in Ghana. The authors gathered data through a literature review, interviews, and observations to understand the challenges faced by choir directors and identify effective strategies for managing them. Findings: The findings of this study suggest that choir directors in Ghana can overcome challenges and contribute to the country's musical heritage by implementing specific strategies. These include seeking diverse funding sources, engaging with local businesses, cultural organizations, and government agencies for financial support, promoting the unique qualities of their choirs, and emphasizing cultural authenticity, repertoire diversity, and innovative performances to attract audiences and sponsors. Recommendations: The theoretical ideas that informed this article's recommendations and the actual experiences that took place in the Ghanaian choir context validated them. The authors likely drew upon their expertise, scholarly research, and consultation with practitioners to develop and validate these recommendations. They should seek diverse funding sources, engage with local businesses and organizations, and promote the unique qualities of their choirs to attract audiences and sponsors. Policymakers are encouraged to support the development and sustainability of choirs in Ghana by recognizing their cultural significance and providing financial and logistical support. Policies that promote the arts, cultural preservation, and community engagement can contribute to the growth and success of choirs. Additionally, policies addressing funding constraints and resource limitations can alleviate some of the challenges faced by choir directors, enabling them to thrive and contribute to Ghana's musical landscape. The article aims to inspire and guide directors in managing choirs in Ghana, highlighting the potential for cultural enrichment and artistic excellence within this unique context. (shrink)

We study ultraproducts of finite residue rings \ where \ is a non-principal ultrafilter. We find sufficient conditions of the ultrafilter \ to determine if the resulting ultraproduct \ has simple, NIP, \ but not simple nor NIP, or \ theory, noting that all these four cases occur.

The randomization of a complete first-order theory [Formula: see text] is the complete continuous theory [Formula: see text] with two sorts, a sort for random elements of models of [Formula: see text] and a sort for events in an underlying atomless probability space. We study independence relations and related ternary relations on the randomization of [Formula: see text]. We show that if [Formula: see text] has the exchange property and [Formula: see text], then [Formula: see text] has a strict independence (...) relation in the home sort, and hence is real rosy. In particular, if [Formula: see text] is o-minimal, then [Formula: see text] is real rosy. (shrink)

In the paper Randomizations of Scattered Sentences, Keisler showed that if Martin’s axiom for aleph one holds, then every scattered sentence has few separable randomizations, and asked whether the conclusion could be proved in ZFC alone. We show here that the answer is “yes”. It follows that the absolute Vaught conjecture holds if and only if every \-sentence with few separable randomizations has countably many countable models.

We study the relationship between fields of transseries and residue fields of convex subrings of non-standard extensions of the real numbers. This was motivated by a question of Todorov and Vernaeve, answered in this paper.