Não apenas uma vez Nietzsche escreve que o mundo, junto com tudo que nele há, é tão somente vontade de poder. Por meio dessa teoria ele pensa os diversos níveis da existência, indo desde elementos ínfimos e simples até estruturas complexas, com elevado grau de refinamento. Tudo não passa, segundo esse filósofo, do desenrolar de forças em jogo agonístico por um algo a mais de poder. Neste artigo nós analisamos alguns aspectos da teoria da vontade de poder para mostrar como (...) Nietzsche faz uso de um mesmo arranjo conceitual para qualificar toda a existência. Assim, tanto o microscópico quanto o macroscópico, tanto o orgânico quanto o inorgânico, são tomados como exemplos de entes que, não obstante suas diferenças, são todos vontades de poder. (shrink)

A characterization of epistemic rationality, or epistemic justification, is typically taken to require a process of conceptual clarification, and is seen as comprising the core of a theory of (epistemic) rationality. I propose to explicate the concept of rationality. -/- It is essential, I argue, that the normativity of rationality, and the purpose, or goal, for which the particular theory of rationality is being proposed, is taken into account when explicating the concept of rationality. My position thus amounts to an (...) instrumentalist position about theories of epistemic rationality. Since there are different purposes, or goals, for which theories of rationality are proposed, the method of explication leaves room for different characterizations of rationality. I focus on two such (kinds of) purposes: first, the purpose of guiding the formation (or maintenance) of doxastic states and, second, the purpose of assessing (the formation or maintenance of) doxastic states. I conclude by outlining a pluralistic picture concerning rationality. (shrink)

Trata-se de apontar neste artigo que em Heidegger há dois caminhos diferentes para se investigar a questão do niilismo, que não são necessariamente excludentes, mas que por se localizarem em pontos diferentes em relação à sua virada (Kehre) de pensamento, acaba sempre gerando o questionamento de se estamos frente ao mesmo projeto ou não. Procuraremos demarcar a discussão e mostrar que seja tomada como uma empreitada de longo prazo ou não, o niilismo enquanto relacionado ao nada, na visão dos filósofos (...) da Escola de Kyoto, em especial Nishitani, não pode ser superado. Por consequência, passamos a investigação da proposta de superação do niilismo e buscamos os antecessores de sua discussão sobre a Vacuidade em Nagarjuna. (shrink)

Enjoying great popularity in decision theory, epistemology, and philosophy of science, Bayesianism as understood here is fundamentally concerned with epistemically ideal rationality. It assumes a tight connection between evidential probability and ideally rational credence, and usually interprets evidential probability in terms of such credence. Timothy Williamson challenges Bayesianism by arguing that evidential probabilities cannot be adequately interpreted as the credences of an ideal agent. From this and his assumption that evidential probabilities cannot be interpreted as the actual credences of human (...) agents either, he concludes that no interpretation of evidential probabilities in terms of credence is adequate. I argue to the contrary. My overarching aim is to show on behalf of Bayesians how one can still interpret evidential probabilities in terms of ideally rational credence and how one can maintain a tight connection between evidential probabilities and ideally rational credence even if the former cannot be interpreted in terms of the latter. By achieving this aim I illuminate the limits and prospects of Bayesianism. (shrink)

O avanço tecnológico envolve e faz parte do cotidiano de todas as pessoas, e a sua influência pode ser direta ou indireta. O que se faz são up-grades com o propósito de conseguir participar deste universo digital. As Tecnologia de Informação e Comunicação (TIC) tem provocado alterações na humanidade, no modo de viver, de se relacionar, aprender, pensar e ensinar. Propõe-se um estudo bibliográfico, baseado em duas grandes obras de Pierre Lévy, um dos grandes pensadores da era da informação: O (...) que é virtual? (2011) e Cibercultura (2010). O artigo está estruturado do seguinte modo: discute a definição de virtual segundo o ponto de vista de Lévy; apresenta a inteligência coletiva e sua influência na sociedade; e enfoca uma nova proposta de aprendizagem, que possibilita o aprendizado por intermédio das atividades sociais e profissionais dos indivíduos. Portanto, a virtualização, além de ser a base de dados e informações, quebra as barreiras do tempo e do espaço, aproxima professores e alunos e lhes fornece ferramentas para a construção do conhecimento, colocando-os nesse produtivo processo de ensino e aprendizagem. (shrink)

RESUMO: Partindo de avaliações retrospectivas de Horkheimer sobre seu percurso intelectual, procuramos mostrar que tanto Schopenhauer quanto Marx constituem uma influência permanente na obra do fundador da teoria crítica: com efeito, a maior evidência de um dos dois autores em certo momento da trajetória de Horkheimer não implica o desaparecimento do outro, mas antes o pressupõe como fundamento, ainda que latente. É que, embora estabeleça uma interlocução com cada um deles considerado isoladamente, o determinante, a nosso ver, é a leitura (...) conjugada que Horkheimer realiza de ambos: por incompatíveis que pareçam, as esperanças de racionalização e emancipação sociais inspiradas em Marx e o pessimismo de Schopenhauer relacionam-se intrinsecamente, donde resultam um materialismo necessariamente pessimista e um pessimismo necessariamente materialista. Pretendemos evidenciar, porém, que, em virtude do modo pelo qual Horkheimer dialoga com a tradição filosófica, bem como em razão de mudanças de configuração histórica e, por conseguinte, teórica, a relação entre o pessimismo de Schopenhauer e o anseio emancipatório animado por Marx assume aspectos diversos e nuançados no decurso de sua obra. ABSTRACT: Starting from Horkheimer's retrospective evaluations on his intellectual trajectory, we try to show that both Schopenhauer and Marx are a permanent influence in his work: indeed, the major evidence of one of the two authors at one point in Horkheimer's trajectory does not imply the disappearance of the other one, but rather presupposes him as a basis, even though latent. For although Horkheimer dialogues with each of them separately, what is determining, in our view, is the combined reading that he performs of both: the social rationalization and the emancipation hopes inspired by Marx and the Schopenhauer's pessimism, even though they may seem incompatible, are intrinsically connected, so that there are a necessarily pessimistic materialism and a necessarily materialist pessimism. We intend to evidence, however, that because of the way Horkheimer dialogues with the philosophical tradition and because of the historical and therefore theoretical changes, the relationship between Schopenhauer's pessimism and the aspiration to emancipation inspired by Marx takes on different aspects and nuances in the course of his work. (shrink)

Resumo: Este artigo tem por intenção mostrar que o conceito de angústia da psicanálise de Freud consegue avançar apenas na investigação de uma angústia do ser, ou seja, trata da angústia do homem enquanto um ente do mundo. Em contrapartida, procuraremos mostrar que o estudo das angústias impensáveis por parte de Winnicott se preocupa com a questão de como o homem chega a ser um ente no mundo. O resultado da distinção paradigmática entre as duas teorias psicanalíticas para a angústia (...) pode ser iluminada quando se toma como apoio a fenomenologia existencial de Martin Heidegger. Palavras-chaves: Angústia, castração, fenomenologia existencial, Winnicott: This article is intended to show that the concept of anxiety by Freud's psychoanalysis can only be developed in the investigation of an anxiety of being, i.e., it deals with the anxiety of man as a being in the world. In contrast, we aim to demonstrate that the study of unthinkable anxiety by Winnicott is concerned with the question of how man comes to be a being in the world. The result of the pragmatic distinction between the two psychoanalytic theories of anxiety may be elucidated by taking Martin Heidegger's existential phenomenology as a support. Keywords: Anxiety, castration, existential phenomenology, Winnicott. (shrink)

O objetivo deste artigo é mostrar que a moralidade para Freud está determinada por um aparelho psíquico que tem por função justamente reprimir a única coisa que no homem apontaria para uma liberdade de ação, a saber: o desejo. O problema é que se todos os homens decidissem realizar todos os seus desejos, não haveria, para Freud, a possibilidade da civilização. Não haveria espaço nas teorias psicanalíticas para se pensar uma moralidade não determinada filogeneticamente? Tentarei apresentar como contraponto uma possibilidade (...) de resposta a essa questão com a teoria psicanalítica de Winnicott. (shrink)

Pretende-se mostrar, a partir do pensamento de Keiji Nishitani, os pressupostos para a discussão sobre o “vazio-saber” e que passa pela questão do niilismo e da vacuidade em sua filosofia. O problema do niilismo em Nishitani, diferente da perspectiva adotada pelos filósofos ocidentais, não está ligada à ideia de que o Eu frente ao Nada perde seus fundamentos e sua existência, deixando de ter sentido. Pelo contrário, é no encontro com o Nada que o homem pode descobrir e entrar em (...) contato com sua verdadeira essência, uma vez que, é nesse encontro que sua existência se revela. Isso só seria possível caso o Eu realizasse um processo de auto abertura, um salto para dentro da Vacuidade, para que aí sua verdadeira face se revele e ele possa encontrar seu verdadeiro ser. Pretende-se desenvolver esses desdobramentos ao longo do artigo. (shrink)

Intensely discussed in the philosophy of science in the 20th and 21st centuries, the themes of realism and anti-realism pervade Feyerabend’s work. However, discerning the author’s position on these subjects poses a problem for scholars. One sign of this is that they attribute to Feyerabend the adherence to (or the rejection of) different conceptions of realism and anti-realism. Despite the divergences, however, scholars approach the topic in a similar way, detecting elements of Feyerabend’s realist and anti-realist positions that are incompatible (...) with each other and that follow one another in the course of his work. Although such studies are of great value, we propose to explore another approach, which also seems pertinent. Examining Feyerabend’s writings, we seek to discern conditions that make it possible for the author to assume, without contradiction, realist and anti-realist positions. Finally, we seek to infer from Feyerabend’s conception of science features of the realism prescribed by the author as well as features of the realism proscribed by him. (shrink)

The adaptation-by-binding account and the arousal-biased competition model suggest that emotional arousal increases binding effects for transient links between stimuli and responses. Two highly-powered, pre-registered experiments tested whether transient stimulus-response bindings are stronger for high versus low arousing stimuli. Emotional words were presented in a sequential prime-probe design in which stimulus relation, response relation, and stimulus arousal were orthogonally manipulated. In Experiment 1 (N = 101), words with high and low arousal levels were presented individually in prime and probe displays. (...) In Experiment 2 (N = 170), a high arousing affective word was presented simultaneously with a neutral word during the prime display; in the subsequent probe display, either the arousing or the neutral word repeated or a different high versus low arousal word was shown. Data from both experiments did not demonstrate a modulation of SRBR effects by stimulus arousal and SRBR effects were of equal magnitude for word stimuli of high and low arousal levels. These null results are not in line with binding accounts that hypothesise a modulatory influence of emotional arousal on perception-action binding. (shrink)

Scholars point out contradictions in Nietzsche’s philosophy. An example would be his po itions on science, object of praise and criticism. If so, Nietzsche would make contradictory remarks about a domain that, on principle, seeks to rid itself of contradictions. From the perspective of Nietzschean philosophy, would attributing contradiction to it mean an objection? Would Nietzsche’s praise and criticism of science be incompatible? After trying to answer these questions, we will aim to show that the philosopher’s considerations on science reveal (...) a way of proceeding that he not only claims for himself but also prescribes to scientific thought: the art of nuance. (shrink)

Resumo: Partindo da análise de O Anticristo, investigamos a função que Nietzsche atribui à ciência, entendida como forma de inverdade, em relação a outras formas de inverdade, como o cristianismo. Primeiro, buscamos mostrar que, nesse escrito, o autor estabelece a incompatibilidade entre ciência e cristianismo atribuindo-lhes características específicas e inconciliáveis. Depois, evidenciamos que qualificativos como “falsa”, “errônea”, “fictícia” e “mentirosa”, aplicados em tom pejorativo à concepção religiosa de mundo em O Anticristo, determinam igualmente, em outros escritos, o conhecimento científico. Ora, (...) se as concepções de mundo cristã e científica têm características semelhantes, por que Nietzsche recorre à ciência para rejeitar o cristianismo?: Starting from the analysis of The Antichrist, we investigate the function that Nietzsche attributes to science, understood as a form of untruth, in relation to other forms of untruth, such as Christianity. First, we seek to show that, in this writing, the author establishes the incompatibility between science and Christianity by assigning them specific and irreconcilable characteristics. Then, we show that qualifications such as “false”, “erroneous”, “fictitious” and “lying”, applied in a derogatory way to the religious conception of the world in The Antichrist, also determine, in other writings, scientific knowledge. Now, if the Christian and scientific worldviews have similar characteristics, why does Nietzsche turn to science to reject Christianity? (shrink)

Resumo Estabelecida em Assim falava Zaratustra, a associação dos conceitos de vida, valor e vontade de potência se revela rica em consequências para o pensamento de Nietzsche. Nosso objetivo é investigar como essas noções operam na sintomatologia nietzschiana, procedimento que consiste em avaliar o valor dos valores, tomando-os como sinais de vida ascendente ou decadente. Esperamos mostrar que um modo de estimar valores só é considerado superior se traduz uma afirmação da concepção nietzschiana de vida ascendente. Por fim, contamos sustentar (...) que esse critério para avaliar o valor dos valores implica, ele mesmo, valores, o que o torna injusto.The association of notions of life, value and will to power established in Nietzsche’s Thus Spoke Zarathustra reveals a great amount of consequences to the author’s philosophy. In this paper we propose to investigate how these concepts constitute a necessary condition for the Nietzschean symptomatology, which is a procedure that evaluates the value of the values, considering them as signs of an ascending or declining life. Furthermore, we attempt to demonstrate that the values may solely be regarded as superior and ascending if they translate an affirmation of the Nietzschean conception of ascending life. Finally, this study will support the idea that the criterion to evaluate the values itself implies other values, which renders it unjust. (shrink)

This article discusses two well‐known texts that respectively describe learning and teaching, drawn from the work of Freud and Plato. These texts are considered in psychoanalytic terms using a methodology drawn from the philosophy of Luce Irigaray. In particular the article addresses Irigaray's approach to the analysis of speech and utterance as a ‘cohesion between the source of the utterance and the utterance itself’ (Hass, 2000). I apply this approach to ask whether educational tradition has fractured the relationship between pedagogy (...) and the body of the teacher/pupil. Teaching and learning are re‐addressed in ways that challenge the gender‐neutral representation of pedagogy as a systematic technique. (shrink)

How should an agent revise her epistemic state in the light of doxastic disagreement? The problems associated with answering this question arise under the assumption that an agent’s epistemic state is best represented by her degree of belief function alone. We argue that for modeling cases of doxastic disagreement an agent’s epistemic state is best represented by her confirmation commitments and the evidence available to her. Finally, we argue that given this position it is possible to provide an adequate answer (...) to the question of how to rationally revise one’s epistemic state in the light of disagreement. (shrink)

Scholars have debated the role that altruistic considerations play—and should play—in recruitment and decision-making processes for clinical trials. Little empirical data are available to support their various perspectives. We analyzed 140 audiotaped pediatric informed consent sessions, of which 95 (68%) included at least one discussion of how participation in a cancer clinical trial might benefit: 1) the pursuit of scientific knowledge generally; 2) other children with cancer specifically; and 3) “the future” and other vaguely defined recipients. Clinicians initiated most (80%) (...) of these discussions of altruism. The enrollment rate of children in the clinical trial was high (83%) overall, but not higher among children whose parents were involved in an altruism-oriented discussion. These findings suggest that: (1) clinicians invoke a spectrum of altruistic considerations rather than a single monothematic notion of altruism, and (2) the effect of altruistic considerations on subsequent enrollment decisions is marginal. While further research on this topic is warranted, bioethical debate should strive to reflect the diversity of altruistic discourse in clinical research encounters and to place this discourse in the context of other, including nonaltruistic, considerations. (shrink)

The article investigates one of the key contributions to modern structural mathematics, namely Hilbert’sFoundations of Geometry and its mathematical roots in nineteenth-century projective geometry. A central innovation of Hilbert’s book was to provide semantically minded independence proofs for various fragments of Euclidean geometry, thereby contributing to the development of the model-theoretic point of view in logical theory. Though it is generally acknowledged that the development of model theory is intimately bound up with innovations in 19th century geometry, so far, little (...) has been said about how exactly model-theoretic concepts grew out of methodological investigations within projective geometry. This article is supposed to fill this lacuna and investigates this geometrical prehistory of modern model theory, eventually leading up to Hilbert’sFoundations. (shrink)

Filosofia, linguagem e formação: algumas observações de inspiração wittgensteiniana Resumo: Neste artigo, pretendemos destacar, a partir das indicações do segundo Wittgenstein, a vinculação entre problemas presentes na origem da tradição filosófica e determinadas imagens (Bilder) da significação linguística. Em particular, procuraremos nos deter no problema da relação entre discurso e identidade do Ser, tópico emblemático da discussão travada entre Parmênides, alguns sofistas e Platão e decisivo na conformação da tradição do pensamento filosófico. Assumindo o fundo pedagógico presente nas origens da (...) filosofia, procuraremos igualmente destacar o papel reservado à aprendizagem da linguagem – ou de certo uso da linguagem – na forma de conhecimento filosófico. Discutiremos finalmente como a filosofia pode ser entendida como uma atividade formativa de esclarecimento conceitual a partir e por meio da linguagem – um exercício que tenta remeter a obra tardia de Wittgenstein à tradição de pensamento que, direta ou indiretamente, representava o enfeitiçamento contra o qual o filósofo se debateu ao longo da vida. Palavras-chave: Filosofia da linguagem; Wittgenstein; Formação; Ontologia; Paideia. Philosophy, language and education: some remarks from a Wittgensteinian perspective Abstract: Acordding to some remarks from late Wittgenstein, the article stresses the link between problems present at the origin of the philosophical tradition and certain images (Bilder) of linguistic meaning. In particular, we focus on the relation between language and identity of Being, one matter upon wich Parmenides, Sophists and Plato disagreed, and decisive for the tradition of philosophy. Assuming the educational relevance of this ancient philosophical debates, we will also seek to highlight the role reserved for language learning – or a certain use of language – in the form of philosophical knowledge. We will finally discuss how philosophy can be understood as a formative activity of conceptual elucidation by means of language, an exercise that attempts to refer Wittgenstein's late work to the tradition of thought that, directly or indirectly, represented the bewitchment against which the philosopher struggled throughout his life. Keywords: Philosophy of language; Wittgenstein; Education; Ontology; Paideia. Filosofía, lenguaje y educación: algunos comentários inspirados em uma perspectiva wittgensteiniana Resumen: De acuerdo con algunas observaciones del último Wittgenstein, el artículo enfatiza el vínculo entre los problemas presentes en el origen de la tradición filosófica y ciertas imágenes (Bilder) de significado lingüístico. En particular, nos centramos en la relación entre lenguaje e identidad del ser, tema en el que Parménides, sofistas y Platón discreparon, y decisivo para la tradición de la filosofía. Asumiendo la relevancia educativa de estos debates filosóficos antiguos, también buscaremos resaltar el papel reservado al aprendizaje de la lenguaje – o un cierto uso del linguaje – en forma de conocimiento filosófico. Finalmente discutiremos cómo la filosofía puede entenderse como una actividad formativa de elucidación conceptual por medio del lenguaje, ejercicio que intenta remitir la obra tardía de Wittgenstein a la tradición del pensamiento que, directa o indirectamente, representó el hechizo contra lo que el filósofo luchó a lo largo de todo su vida. Palabras Clave: Filosofía del linguaje; Wittgenstein; Educación; Ontología; Paideia. Data de registro: 10/08/2020 Data de aceite: 30/11/2020. (shrink)

Resenha dos livros Aisthesis. Cenas do regime estético da arte e Le temps du paysage. Aux origines de la révolution esthétique, de Jacques Rancière. De As três fontes das filosofias da história, de Bertrand Binoche, e de A filosofia da fisiocracia: Metafísica, política, economia, de Thiago Vargas. Conta ainda com uma resenha da 34ª Bienal de São Paulo.

Four experiments demonstrate category congruency priming by subliminal prime words that were never seen as targets in a valence-classification task and a gender-classification task . In Experiment 1, overlap in terms of word fragments of one or more letters between primes and targets of different valences was larger than between primes and targets of the same valence. In Experiments 2 and 3, the sets of prime words and target words were completely disjoint in terms of used letters. In Experiment 4, (...) pictures served as targets. The observed subliminal priming effects for novel primes cannot be driven by partial analysis of primes at the word-fragment level; they suggest instead that primes were processed semantically as whole words contingent upon prime duration. (shrink)

This article deals with the concepts, processes, and antagonisms that are associated with the notion of postsecularity. In light of this article’s expanded interpretation of José Casanova on the secular and secularization, as well as thoughts on James A. Beckford’s take on public religions, five rubrics on the postsecular derived from critical theory and an understanding of ‘reflexive secularization’ are presented. This term focuses on secularization processes and how these practices unleash complementary as well as antagonistic tendencies, a confrontation of (...) normativities and specific social-empirical challenges. From this basis it is argued that social-empirical analysis should focus on non-naturalistic relations between individuals occupying structurally equivalent positions in narrative networks. A plurality of normativities are seriously considered as ideas circulating through social relations where the critical competence of the participants of such communication processes are provoked to subvert anything – including any normative positionality – as taken for granted. Moves towards the decolonization of the secular/postsecular dyad are emphasized, with ramifications for thinking about the urban, which point to the universal and authentic foundations of the human condition that are brought into play. (shrink)

In everyday life and in science we acquire evidence of evidence and based on this new evidence we often change our epistemic states. An assumption underlying such practice is that the following EEE Slogan is correct: 'evidence of evidence is evidence' (Feldman 2007, p. 208). We suggest that evidence of evidence is best understood as higher-order evidence about the epistemic state of agents. In order to model evidence of evidence we introduce a new powerful framework for modelling epistemic states, Dyadic (...) Bayesianism. Based on this framework, we then discuss characterizations of evidence of evidence and argue for one of them. Finally, we show that whether the EEE Slogan holds, depends on the specific kind of evidence of evidence. (shrink)

On an evidentialist position, it is epistemically rational for us to believe propositions that are (stably) supported by our total evidence. We are epistemically permitted to believe such propositions, and perhaps even ought to do so. Epistemic rationality is normative. One popular way to explain the normativity appeals to epistemic teleology. The primary aim of this paper is to argue that appeals to epistemic teleology do not support that we ought to believe what is rational to believe, only that we (...) are permitted to do so. In arguing for that, I defend an epistemic teleological position that is radical in nature. It involves no commitment to aiming at the truth. I conclude by dispelling some worries that have been raised about my position. (shrink)

Na sequência de desastres com barragens de megacorporações como o grupo Samarco/Vale/BHP é certo ocorrer a exigência imediata de respostas públicas, cujos vieses cognitivos, ao conferir notoriedade aos efeitos recentes, não dão aos riscos passados ou desconhecidos a abordagem adequada à sua condição de causa. Como reação instantânea à distorção de foco as políticas ambientais, no setor minerário, têm dado protagonismo a mudanças regulatórias criadas a toque de caixa, preocupadas muito mais em dirimir a consternação social do que em resolver (...) o dilema de instituições administrativas responsáveis pela fiscalização dos barramentos de rejeitos, cujo fim maior é assegurar as vidas humanas e o meio ambiente envolvidos. Este artigo se debruça no estudo das implicações da complexidade do sistema público vigente, marcado pela descoordenação entre os órgãos competentes e suas políticas públicas regulatórias, e como a análise das causas pode indicar caminhos no tratamento dos desajustes na governança minerária, amenizando a problemática do controle de segurança. (shrink)

We call affective brainocentrism the tendency to privilege the brain over other parts of the organism when defining or explaining emotions. We distinguish two versions of this tendency. According to brain-sufficient, emotional states are entirely realized by brain processes. According to brain-master, emotional states are realized by both brain and bodily processes, but the latter are entirely driven by the brain: the brain is the master regulator of bodily processes. We argue that both these claims are problematic, and we draw (...) on physiological accounts of stress to make our main case. These accounts illustrate the existence of complex interactions between the brain and endocrine systems, the immune system, the enteric nervous system, and even gut microbiota. We argue that, because of these complex brain–body interactions, the brain cannot be isolated and identified as the basis of stress. We also mention recent evidence suggesting that complex brain–body interactions characterize the physiology of depression and anxiety. Finally, we call for an alternative dynamical, systemic, and embodied approach to the study of the physiology of emotions that does not privilege the brain, but rather aims at understanding how mutually regulating brain and bodily processes jointly realize a variety of emotional states. (shrink)

This article reviews evidence suggesting that the cause of approach and avoidance behavior lies not so much in the presence (i.e., the stimulus) but, rather, in the behavior’s anticipated future consequences (i.e., the goal): Approach is motivated by the goal to produce a desired consequence or end-state, while avoidance is motivated by the goal to prevent an undesired consequence or end-state. However, even though approach and avoidance are controlled by goals rather than stimuli, affective stimuli can influence action control by (...) priming associated goals. An integrative ideomotor model of approach and avoidance is presented and discussed. (shrink)

The paper is concerned with Quine's substitutional account of logical truth. The critique of Quine's definition tends to focus on miscellaneous odds and ends, such as problems with identity. However, in an appendix to his influential article On Second Order Logic, George Boolos offered an ingenious argument that seems to diminish Quine's account of logical truth on a deeper level. In the article he shows that Quine's substitutional account of logical truth cannot be generalized properly to the general concept of (...) logical consequence. The purpose of this paper is threefold: first, to introduce the reader to the metamathematics of Quine's substitutional definition of logical truth; second, to make Boolos' result accessible to a broader audience by giving a detailed and self-contained presentation of his proof; and, finally, to discuss some of the possible implications and how a defender of the Quinean concepts might react to the challenge posed by Boolos' result. (shrink)

Societies change; and sociology has, since its inception, described and evaluated these changes. This article proposes a revised theory of collective learning processes, a conceptual framework which addresses ways in which people make sense of and cope with change. Drawing on Habermas’ classic proposal, but shifting the focus from argumentation towards storytelling, it explains how certain articulations allow for collective learning processes (imagining more inclusive orders), while others block learning processes (imagining more exclusive orders). More specifically, the article points to (...) narrative genres (romance, tragedy, comedy and irony) which organize feelings and shape the social bond, proposing that ironic and tragic stories have the potential to trigger collective learning processes, while romantic and comic stories tend to block them. (shrink)

In recent years, several scholars have been investigating Frege’s mathematical background, especially in geometry, in order to put his general views on mathematics and logic into proper perspective. In this article I want to continue this line of research and study Frege’s views on geometry in their own right by focussing on his views on a field which occupied center stage in nineteenth century geometry, namely, projective geometry.