RELAÇÃO E EFEITOS BIOQUÍMICO-NUTRICIONAIS SOBRE A MORTALIDADE EMBRIONÁRIA EM VACAS -/- Emanuel Isaque Cordeiro da Silva Departamento de Agropecuária – IFPE Campus Belo Jardim [email protected] ou [email protected] WhatsApp: (82)98143-8399 -/- •__5. Mortalidade EMBRIONÁRIA -/- A mortalidade embrionária (ME) é uma desordem reprodutiva responsável por cerca de 15% das falhas da gestação. Em si, a ME pode ser dividida em dois grandes grupos, a ME precoce, ou seja, aquela que ocorre nos primeiros dias da gestação, por problemas específicos de reconhecimento materno-fetal, (...) que não geram alteração significativa do ciclo estral, já que, não se afeta o corpo lúteo (BONDURANT, 2004). A segunda forma da ME, denominada ME tardia, altera o ciclo estral e se apresenta por rejeição da implantação em suas primeiras fases, usualmente se apresenta entre 25 e 40 dias pós-serviço. De acordo com GEARY (2005) existem múltiplas causas associadas à ME, entre essas causas listam-se os problemas de rejeição imunológica, a ausência de fatores de reconhecimento materno-fetal, problemas infecciosos, estresse e deficiências nutricionais, sobre essa última pode-se citar: 5.1 Deficiência de betacarotenos Os betacarotenos são precursores da vitamina A (provitamina A). São pigmentos vegetais de cor amarela ou laranja que, uma vez ingeridos, se transformam no fígado e no intestino delgado em vitamina A. São antioxidantes que ajudam o organismo a eliminar os radicais livres tóxicos que causam a oxidação dos tecidos (reação química de peroxidação que produz lesão nos tecidos já que os peróxidos são compostos tóxicos e cancerígenos) em células, proteínas e no material genético como DNA. Os radicais livres são normalmente formados como subprodutos do metabolismo oxidativo energético do organismo. Os betacarotenos atuam atrapalhando estes radicais livres e moléculas de oxigênio livre, e daí parte seu efeito protetor o qual centra-se na defesa da parede epitelial, pois sendo precursores da vitamina A, induzindo a sua síntese protegem a parede epitelial do enfraquecimento das suas membranas, evitando assim a entrada fácil de microrganismos patogênicos que possam, especificamente no caso de uma fêmea gestante, produzir infecções que ataquem o embrião provocando a sua morte, uma vez que aumenta-se a resistência imunológica. Além disso, intervêm também na diferenciação das células estaminais do embrião, evitando que ocorram malformações que possam originar mortalidade embrionária, e também evitando a assimetria do organismo que se está formando. A vitamina A, ajuda na conservação dos epitélios para um funcionamento normal. Uma deficiência desta, produz uma alteração dos epitélios que revestem o aparelho genital, podendo ocasionar diminuição da barreira protetora que formam as membranas, os microrganismos patogênicos podem entrar facilmente, desencadeando a morte do embrião. A vitamina A, atua no momento em que as células tronco do embrião entram em uma área deste, chamada "Nódulo de Hensen", começam a formar três camadas embrionárias de células que dão passagem ao sistema nervoso, digestivo, circulatório e outros sistemas do corpo. Células específicas localizadas nesta zona do embrião utilizam seus cílios (que segregam vitamina A) para criar correntes no fluido que as rodeia e dirigir as células estaminais para o seu destino final. Estas células-tronco, antes de chegar ao nódulo do embrião "não estão orientadas espacialmente e tampouco estão diferenciadas em tecidos concretos" embora depois de cruzar esta porta, recebem ordens genéticas necessárias para se colocarem no interior do organismo em desenvolvimento e conhecerem qual vai ser a sua diferenciação específica. Então a ação desta vitamina faz com que algumas destas células ignorem as instruções de diferenciação esquerda e direita, prosseguindo simetricamente. Segundo isto, em uma deficiência de vitamina A, o aspecto exterior do corpo também acabaria por ser assimétrico perdendo potencial de aceitação na implantação, levando os mecanismos naturais de vigilância de estabilidade celular a sua destruição e, portanto, gerando a ME (TORRES et al., 2002). Os níveis de vitamina A, bem como de outras vitaminas, na alimentação de bovinos de corte ou leite já foram discutidos. Cada animal tem sua particularidade de ingestão diária de vitaminas conforme a idade, sexo, categoria, etc. e que esses requerimentos são, muitas vezes, variáveis conforme a disponibilidade, isto é, pode-se fazer a injeção direta de fármacos em líquido ricos em vitaminas no animal, ou pode-se optar pelo fornecimento nos alimentos concentrados (ração) ou pelos volumosos (gramíneas, forrageiras e leguminosas). Deve-se estar atento para que os níveis não ultrapassem o necessário para que nenhum elemento sobressaia outro e venha a ocasionar afecções além de reprodutivas. 5.2 Relação com a Proteína O excesso de proteína crua na dieta tem sido associada com mortalidade embrionária. Há uma hipótese que sugere que a concentração de LH, e portanto de progesterona, poderiam ser afetadas por elevados níveis de proteína na ração, talvez não de forma direta, porém pela deficiência de energia que os excessos proteicos geram. Existe uma relação estreita entre o excesso de proteína crua e a concentração de progesterona, esta relação é através de uma "exacerbação" do balanço energético negativo em vacas no início da lactação, pela despesa de precursores da glicose e o consumo energético extra que supõe transformar o amônio em ureia (este fato só se relaciona com a proteína degradável no rúmen). Isso ocasionaria um aumento negativo do balanço energético negativo e queda de glicemia, o que seria captado pela hipófise como um sinal negativo para a liberação de LH. Um excesso de proteína tal que reduza os níveis de progesterona e de bTP-1 (proteína trofoblástica), hoje identificada como o Interferão tau (IFN-t), pertencente a uma subclasse dos interferões Ômega, e definidos como fatores de reconhecimento materno-fetal em bovinos, pode causar mortalidade embrionária por volta do 17° dia após a inseminação devido à perda do efeito de ambos os compostos contra a resposta imunitária da mãe (MOREIRA & MORALES, 2001). Os níveis excessivos de proteína na dieta que conduzem a níveis elevados de ureia no sangue reduzem o pH uterino, estimulando assim a produção da prostaglandina F2 alfa (PGF2-α) que, por sua vez, estimula a contratilidade uterina e reduz a viabilidade de implantação do embrião (GALVIS, 2003). Foi também observado que concentrações elevadas de ureia no sangue reduzem a formação de progesterona, alterando a atividade reprodutiva em ambos os casos. A progesterona é uma hormona lipídica que é produzida pelo corpo lúteo sob o estímulo do (IGF-I) e, como foi indicado anteriormente, este fator de crescimento foi igualmente reduzido, uma vez que o potencial genético para a produção de leite aumentou de tal maneira que a redução da concentração de IGF- I pode ser uma das causas da diminuição da concentração da progesterona, por exemplo. Agora, embora considere-se que a hormona do crescimento (HC) regula a síntese de IGF-I no fígado, esta hormona não é eficaz a menos que exista um nível limiar de insulina e esta última também é reduzida em vacas de alta produção no início da lactação (GALVIS, 2003) e em condições de balanço energético negativo, tal como ocorre no pós-parto precoce. As proteínas são essenciais na vida dos animais e do ser humano. Os animais possuem sua particularidade conforme a exigência requerida de proteína e já foi discutido que os melhores métodos para fornecimento racional dessa macromolécula é por meio dos alimentos concentrados ricos em soja que é considerado um alimento proteico por possuir um teor de 60% desta, ou por meio de alimentos volumosos no caso dos capins, silagens, etc. Como já discutido em outros trabalhos, existem tipos diferentes de proteínas com funções também distintas, citamos a proteína bruta (PB) e a proteína metabolizável (PM), ao qual os animais requerem em porcentagens que devem estar presentes no alimento que o criador fornece e que o animal ingere. -/- Apoio -/- Realização -/- •_ _referências bibliográficas -/- BOLAND, M. P. Efectos nutricionales en la reproducción del ganado. XXXI Jornadas Uruguayas de Buiatría, 2003. BONDURANT, R. H. Controlling what we can control: Limiting embryonic fetal losses. In: Proc. of the American Assn. of Bovine Practitioners Conf. 2004. Vol. 37. p. 2004-2023. CORREA, H. J. El metabolismo del nitrógeno y su relación con las alteraciones reproductivas en vacas de alta producción. II Curso de Actualización en Reproducción Animal, Grupo de Investigación en Biotecnología Aplicada, Politécnico Colombiano Jaime Isaza Cadavid, Medellín, v. 3, 2002. DEHNING, R. Interrelaciones entre nutrición y fertilidad. In: Curso Manejo de la Fertilidad Bovina18-23 May 1987Medellín (Colombia). CICADEP, Bogotá (Colombia) Universidad de La Salle, Medellín (Colombia) Instituto Colombiano Agropecurio, Bogotá (Colombia) Sociedad Alemana de Cooperación Técnica-GTZ (Alemania), 1987. DE LUCA, Leonardo J. Nutrición y fertilidad en el ganado lechero. XXXVI Jornadas Uruguayas de Buiatría, 2008. FRAZER, Grant S. Bovine theriogenology. Veterinary Clinics: Food Animal Practice, v. 21, n. 2, p. xiii-xiv, 2005. GALVIS, Rubén D.; CORREA, Héctor J.; RAMÍREZ, Nicolás. Interacciones entre el balance nutricional, los indicadores del metabolismo energético y proteico y las concentraciones plasmáticas de Insulina, e IGF-1 en vacas en lactancia temprana. Revista Colombiana de Ciencias Pecuarias, v. 16, n. 3, p. 237-248, 2003. GEARY, Tom. Management strategies to reduce embryonic loss. Range Beef Cow Symposium. Lincoln: University of Nebraska, 2005. GORDON, Ian. Controlled reproduction in farm animals series. Nova Iorque: CAB International, 1996. MOREIRA, Olga Lidia; MORALES, C. Efecto del interferón recombinante bovino omega i sobre el intervalo interestral, tiempo de vida del cuerpo luteo y la temperatura corporal en el bovino. Revista de Salud Animal, v. 23, n. 1, p. 56-62, 2001. TORRES, M. et al. Aspectos Farmacológicos relevantes de las Vitaminas Antioxidantes (E, A y C). Archivos Venezolanos de Farmacología y Terapéutica, v. 21, n. 1, p. 22-27, 2002. Emanuel Isaque Cordeiro da Silva Belo Jardim, 29 de março de 2020. (shrink)

Los estudiantes de la Facultad de Ciencias Económicas y de Administración de la Universidad de la República deben realizar, como trabajo final de carrera, una investigación o ensayo monográfico en un área de su interés, tutorados por un docente universitario o un investigador de reconocida trayectoria. Un gran número de estos trabajos monográficos han hecho un aporte valioso al conocimiento pero, lamentablemente, la poca difusión de éstos hace que ese conocimiento termine olvidado en los fondos de la biblioteca de la (...) Facultad, entre cientos de producciones monográficas. Se pretende en este libro, mostrar los aportes que se han generado en el área tanto de Economía de la Cultura como de Gestión de Organizaciones Culturales. Varias de las monografías fueron realizadas en la línea de investigación Costos y Gestión de Organizaciones Culturales, la cual coordino. Otros fueron realizados con antelación, como los trabajos tutorados por el referente de la Economía de la Cultura en Uruguay, el hoy fallecido Luis Stolovich. También se incluyen dos trabajos monográficos tutorados por el Dr Gustavo Buquet, quien siempre está presente a la hora de crear investigación de calidad en Economía de la Cultura. Como cada trabajo supera el centenar de páginas, no es posible publicarlos completamente, por lo que para este libro se hicieron resúmenes de esos trabajos, intentando adecuar la terminología y quitándoles el formato estrictamente científico –poco amigable para un no especialista-, de forma tal que su lectura sea accesible al público en general. Se resumieron ocho, clasificados en tres capítulos: Patrimonio, Artes Escénicas e Industria Cultural. El capítulo de Patrimonio comienza con un trabajo realizado por las Economistas Fernanda Arezo y Verónica Pereyra, titulado “Museos y Ciudadanos, el comportamiento del consumidor”, tutorado por Raúl Ramírez y por mí. Este estudio tuvo como centro explicar la modalidad de conducta de consumo del visitante montevideano hacia tres importantes instituciones museísticas como lo son el Museo del Cabildo, el Museo del Carnaval y el Museo de Historia del Arte. El objetivo del trabajo es estimar la demanda y obtener un indicador de la propensión a pagar por el consumo de dichos museos. El segundo trabajo, titulado “Disposición a pagar por la restauración de la Puerta de la Ciudadela”, fue realizado por las Contadoras Beatriz Torres, María Elena Olarán y María Carolina Duarte, y tutorado en forma conjunta por el Phd. Juan José Goyeneche y quien les escribe. En este trabajo se realiza una valoración contingente para medir la disposición a pagar por la restauración de la “Puerta de la Ciudadela”, un monumento fundamental de identidad montevideana. El capítulo de Patrimonio finaliza con un trabajo realizado por las Economistas Malena Rodríguez y María de la Paz Besada y tutorado por el Ec. Luis Stolovich. El mismo se denomina “El arte uruguayo: un estudio sobre el mercado y la pintura como alternativa de inversión” y explora el mercado de arte uruguayo, analizando la rentabilidad de la inversión en pintura uruguaya. Tratan la rentabilidad de la inversión para tres casos específicos: las obras vendidas por el Banco Comercial en su proceso de recuperación de activos, un portafolio de obras de Pedro Figari y otro de Joaquín Torres García. En cuanto al segundo capítulo, Artes Escénicas, comienza con un trabajo realizado para la obtención del título de Contador Público realizado por Pamela Cambeiro, Martín Cami e Ignacio Mouradián. Se denomina “La gestión de teatros. Caso de estudio: Aplicación del Cuadro de Mando Integral al Teatro Solís” y trata sobre la identificación de indicadores que faciliten las tareas de gestión para la dirección del Teatro. Luego se presenta un trabajo realizado por las Economistas Tania Cruz y Natalia Nollenberger titulado “Análisis económico del teatro independiente en Montevideo: una aproximación al problema de la fatalidad de los costos”. Este trabajo, también tutorado por el Ec. Luis Stolovich, muestra un exhaustivo análisis del teatro independiente montevideano identificando los problemas económicos que afectan al sector. El capítulo de Industria Cultural incluye tres trabajos. El primero, fue realizado por el Economista Diego Traverso y tutorado por el Dr. Gustavo Buquet, y su título es “Análisis de competitividad del sector exportador de Productoras Audiovisuales Publicitarias en Uruguay”. El sector audiovisual publicitario es un sector dinámico que se ha internacionalizado tempranamente y que generó divisas para el país del orden de los US$ 24 millones durante el año 2005 por concepto de exportaciones. En este trabajo se caracteriza al sector audiovisual publicitario en Uruguay y se analiza las ventajas competitivas que posee frente a sus principales competidores extranjeros. El segundo trabajo fue realizado por las Contadoras Natalia Rivera, Antonella Triay y María Eugenia Triay y se denomina “Gestión aplicada a las empresas radiales”. En este se identifican el sector radial, su proceso productivo y la complejidad al definir al “cliente”. Se proponen una serie de indicadores con el doble objetivo de medir el desempeño de la empresa y proveer incentivos a su organización. Finalmente, el último trabajo monográfico, fue una investigación interdisciplinaria, que sirvió simultáneamente para obtener el título de Licenciado en Economía a Ernesto Pienika y el de Licenciado en Administración a Nicolás Cohnheim y a Damián Geinsinger. Este trabajo, tutorado por el Dr. Gustavo Buquet y el Cr. Cecilio García de título “Impactos de las nuevas tecnologías en la .industria musical”, muestra cuáles son los principales impactos en esa industria que las nuevas tecnologías han provocado y cuáles son las posibles estrategias para adaptarse a estos cambios, así como los nuevos modelos de negocio. Espero que este libro sea el primero de una larga lista. Las áreas de Economía de la Cultura y Gestión de Organizaciones Culturales son disciplinas jóvenes que necesitan seguir creciendo. La investigación realizada por trabajos monográficos de fin de carrera en estas áreas, será siempre bienvenida. (shrink)

Theories of emotional justification investigate the conditions under which emotions are epistemically justified or unjustified. I make three contributions to this research program. First, I show that we can generalize some familiar epistemological concepts and distinctions to emotional experiences. Second, I use these concepts and distinctions to display the limits of the ‘simple view’ of emotional justification. On this approach, the justification of emotions stems only from the contents of the mental states they are based on, also known as their (...) cognitive bases. The simple view faces the ‘gap problem’: If cognitive bases and emotions (re)present their objects and properties in different ways, then cognitive bases are not sufficient to justify emotions. Third, I offer a novel solution to the gap problem based on emotional dispositions. This solution (1) draws a line between the justification of basic and non-basic emotions, (2) preserves a broadly cognitivist view of emotions, (3) avoids a form of value skepticism that threatens inferentialist views of emotional justification, and (4) sheds new light on the structure of our epistemic access to evaluative properties. (shrink)

Evidence from cognitive science supports the claim that humans and other animals see the world as divided into objects. Although this claim is widely accepted, it remains unclear whether the mechanisms of visual reference have representational content or are directly instantiated in the functional architecture. I put forward a version of the former approach that construes object files as icons for objects. This view is consistent with the evidence that motivates the architectural account, can respond to the key arguments against (...) representational accounts, and has explanatory advantages. I draw general lessons for the philosophy of perception and the naturalization of intentionality. (shrink)

Object files are mental representations that enable perceptual systems to keep track of objects as numerically the same. How is their reference fixed? A prominent approach, championed by Zenon Pylyshyn and John Campbell, makes room for a non-satisfactional use of properties to fix reference. This maneuver has enabled them to reconcile a singularist view of reference with the intuition that properties must play a role in reference fixing. This paper examines Campbell’s influential defense of this strategy. After criticizing it, a (...) new approach is sketched. The alternative view introduces representational contents to explain perceptual individuation. After arguing that those contents are not satisfactional, it is concluded that there is room for a third view of reference fixing that does not fit into the singularist/descriptivist dichotomy. (shrink)

Radical skepticism relies on the hypothesis that one could be completely cut off from the external world. In this paper, I argue that this hypothesis can be rationally motivated by means of a conceivability argument. Subsequently, I submit that this conceivability argument does not furnish a good reason to believe that one could be completely cut off from the external world. To this end, I show that we cannot adequately conceive scenarios that verify the radical skeptical hypothesis. Attempts to do (...) so fall prey to one or another of three pitfalls: they end up incomplete, reveal a deep contradiction or recreate a non-skeptical hypothesis. I use these results to improve upon Pritchard’s recent attempt at undercutting radical skepticism. (shrink)

Austere relationism rejects the orthodox analysis of hallucinations and illusions as incorrect perceptual representations. In this article, I argue that illusions of optimal motion present a serious challenge for this view. First, I submit that austere-relationist accounts of misleading experiences cannot be adapted to account for IOMs. Second, I show that any attempt at elucidating IOMs within an austere-relationist framework undermines the claim that perceptual experiences fundamentally involve relations to mind-independent objects. Third, I develop a representationalist model of IOMs. The (...) proposed analysis combines two ideas: Evans' dynamic modes of presentation and Fine's relational semantics for identity. (shrink)

Resumen: Este artículo trata del método y su relación con la investigación educativa. El objetivo es analizar la relevancia del método en ciencias humanas y sociales, en especial, en educación. Para ello, dividimos este artículo en tres secciones: 1. ¿Hay método? 2. ¿Hay uno o varios métodos? 3. La discusión sobre el método en la investigación educativa. A la primera pregunta, respondemos que hay método. Respondemos a la segunda señalando la necesidad de adoptar un pluralismo metodológico. La tercera sección defiende (...) que las discusiones sobre el método de investigación educativa implican dimensiones ontológicas, epistemológicas y éticas que se han tornado críticas, y se hace una revisión de cada una de ellas. En el apartado conclusivo, sugerimos algunas vías para desanudar esos asuntos críticos en la investigación educativa.: This article deals with method and its relation to educational research. The objective is to analyze the relevance of method in human and social sciences, especially in education. To this end, we divide this article into three sections: 1. Is there a method? 2. Is there one or more methods? 3. The discussion on method in educational research. To the first question, we answer that there is a method. We answer the second question by pointing out the need to adopt methodological pluralism. The third section argues that discussions on the method of educational research involve ontological, epistemological, and ethical dimensions that have become critical, and a review is made of each of them. In the concluding section, we suggest some ways to disentangle these critical issues in educational research. (shrink)

Abstract: In Mind and World, McDowell conceives of the content of perceptual experiences as conceptual. This picture is supposed to provide a therapy for skepticism, by showing that empirical thinking is objectively and normatively constrained. The paper offers a reconstruction of McDowell's view and shows that the therapy fails. This claim is based on three arguments: 1) the identity conception of truth he exploits is unable to sustain the idea that perception-judgment transitions are normally truth conducing; 2) it could be (...) plausible only from an externalist point of view that is in tension with the view of normativity that motivates conceptualism; 3) the identity conception of truth is incompatible with McDowell's recent version of conceptualism in terms of ‘non-propositional intuitive contents’. (shrink)

The rule account of self-conscious thought holds that a thought is self-conscious if and only if it contains a token of a concept-type that is governed by a reflexive rule. An account along these lines was discussed in the late 70s. Nevertheless, very few philosophers endorse it nowadays. I shall argue that this summary dismissal is partly unjustified. There is one version of the rule account that can explain a key epistemic property of self-conscious thoughts: Guarantee. Along the way, I (...) will rebut a number of objections and introduce two constraints on how the reflexive rule is implemented. (shrink)

According to MODERATISM, perceptual justification requires that one independently takes for granted propositional hinges like <There is an external world>, <I am not a brain in a vat (BIV)>, and so on. This view faces the truth problem: to offer an account of truth for hinges that is not threatened by skepticism. Annalisa Coliva has tried to solve the truth problem by combining the claim that external world propositions have a substantive truth property like correspondence with the claim that hinges (...) have a deflationary truth property. I argue that the resulting view cannot offer a coherent characterization of ‘skeptical switch scenarios’ while providing an effective anti-skeptical strategy. In a more positive vein, I defend an approach that combines a correspondence conception of truth with epistemological disjunctivism. (shrink)

A traditional view holds that the self-concept is essentially indexical. In a highly influential article, Ruth Millikan famously held that the self-concept should be understood as a Millian name with a sui generis functional role. This article presents a novel explanatory argument against the Millian view and in favor of the indexical view. The argument starts from a characterization of the self-concept as a device of information integration. It then shows that the indexical view yields a better explanation of the (...) integration function than the Millian view. The resulting account can rebut Millikan’s objections and it has broader implications for the debate on the essential indexical. (shrink)

It is widely assumed that perception is a source of reasons (SR). There is a weak sense in which this claim is trivially true: even if one characterizes perception in purely causal terms, perceptual beliefs originate from the mind's interaction with the world. When philosophers argue for (SR), however, they have a stronger view in mind: they claim that perception provides pre- or non-doxastic reasons for belief. In this article I examine some ways of developing this view and criticize them. (...) I exploit these results to formulate a series of constraints that a satisfactory account of the epistemic role of perception should fulfil. I also make a positive suggestion: coherentists are right when they claim that only beliefs can be reasons for other beliefs. Nevertheless, I depart from traditional coherentism, for I do not buy its conception of perception as bare sensation, nor explicate the justificatory status of beliefs in terms of coherence. My point is rather that, when one invokes experience to justify a belief, the justifying state must have structural features of beliefs. (shrink)

Iberian repertorios de los tiempos stemmed from Medieval almanacs and calendars. During the sixteenth century significant editorial, conceptual and material changes in repertorios incorporated astronomy, geography, chronology and natural philosophy. From De Li’s Repertorio (1492) to Zamorano’s Cronología (1585), the genre evolved from simple almanacs to more complex cosmological works which circulated throughout the Iberian-American world. This article claims that repertorios are a form of syncretic knowledge rather than “popular science” by relying on the concept of “knowledge in transit”. Elaborating (...) on this perspective, I present how repertorios ended up delivering a worldview from existing materials, a fact so far unnoticed by scholarship. At the same time, repertorios should not be considered an exclusively Iberian phenomenon, but the full scope of their nature as a form of syncretic knowledge should include their networks with migrants, indigenous, mestizos, and criollos across the Atlantic. In this sense, I try to trace the paths connecting productions in the Americas with Iberian repertorios. (shrink)

According to epistemological disjunctivism (ED), in paradigmatic cases of perceptual knowledge, a subject, S, has perceptual knowledge that p in virtue of being in possession of reasons for her belief that p which are both factive and reflectively accessible to S. It has been argued that ED is better placed than both knowledge internalism and knowledge externalism to undercut underdetermination-based skepticism. I identify several principles that must be true if ED is to be uniquely placed to attain this goal. After (...) that, I use those principles to formulate a diachronic skeptical argument. This argument yields the counterintuitive conclusion that understanding a global skeptical hypothesis is all it takes for a rational subject to lose all her perceptual knowledge of the world. Next, I show that a popular Austinian move must reject one or another of the principles that underlie ED. I close by delineating a novel strategy that can block the diachronic skeptical argument while preserving all the principles. The key idea is that perceptual knowledge is grounded in primitive, perceptual and recognitional abilities. This view sheds new light on some puzzling features of global skepticism that have been noted by Descartes and Hume, among others. (shrink)

I suggest a way of extending Stalnaker’s account of assertion to allow for centered content. In formulating his account, Stalnaker takes the content of assertion to be uncentered propositions: entities that are evaluated for truth at a possible world. I argue that the content of assertion is sometimes centered: the content is evaluated for truth at something within a possible world. I consider Andy Egan’s proposal for extending Stalnaker’s account to allow for assertions with centered content. I argue that Egan’s (...) account does not succeed. Instead, I propose an account on which the contents of assertion are identified with sets of multi-centered worlds. I argue that such a view not only provides a plausible account of how assertions can have centered content, but also preserves Stalnaker’s original insight that successful assertion involves the reduction of shared possibilities. (shrink)

Este artículo pretende establecer los límites y alcances de las principales interpretaciones de Newton en el siglo XX, resaltando, de un lado, la evidencia textual de la que disponían los intérpretes y, de otro, las corrientes filosóficas y epistemológicas que definen los rasgos principales de sus interpretaciones. Se verá que el rechazo al positivismo no es condición suficiente para establecer una interpretación adecuada y que, de la mano del fortalecimiento de la investigación a partir de los manuscritos de Newton, se (...) hace necesario un modelo interpretativo más amplio, flexible y detallado que los establecidos por algunos de los más importantes estudiosos como Alexandre Koyré, I. Bernard Cohen, Betty Dobbs y Richard Westfall. (shrink)

A commonly held idea regarding the nature of time is that the future is open and the past is fixed or closed. This article investigates the notion that there is an asymmetry in openness between the past and the future. The following questions are considered: How exactly is this asymmetry in openness to be understood? What is the relation between an open future and various ontological views about the future? Is an open future a branching future? What is the relation (...) between an open future and the question of whether contingent statements about the future are true or false? Is an open future compatible with a single determinate future? (shrink)

‘Modest’ and ‘full-blooded’ conceptions of meaning disagree on whether we should try to provide explanations of reference. In this paper, I defend a psychological brand of the full-blooded program. As I understand it, there are good reasons to provide a psychological explanation of referential abilities. This explanation is to be framed at an intermediary level of description between the personal level and the explanations provided by neuroscience. My defense of this program has two parts: First, I display the explanatory insufficiency (...) of truth-conditional semantics and, second, I respond to some widespread arguments against psychological explanations of referential abilities. (shrink)

Desde hace algunas décadas es un lugar común en la Industria Newton mencionar una y otra vez la creencia de Isaac Newton en una sabiduría perdida. Sin embargo, el trabajo de crítica e interpretación al respecto se ha limitado a enunciar esta creencia sin ensayar una interpretación. Quienes más han trabajado el problema se han limitado a mostrar cómo esta creencia era plausible en el contexto intelectual de la época señalando a predecesores y seguidores de Newton que compartían esta creencia. (...) En contraste con lo anterior, este artículo indaga cómo, desde puntos de vista epistemológicos y filosóficos, la sabiduría de los antiguos era para Newton una fuente legítima de información sobre el mundo y sus designios, proponiendo una distinción entre tiempo y temporalidad como niveles complementarios pero diferentes de indagación sobre lo creado. (shrink)

Epistemological disjunctivism (ED) has been thought to solve the conditionality problem for epistemic externalism. This problem arises from externalists’ characterization of our epistemic standings as conditional on the obtaining of worldly facts which we lack any reflective access to. ED is meant to avoid the conditionality problem by explicating subjects’ perceptual knowledge in paradigmatic cases of perceptual knowledge via their possession of perceptual reasons that are both factive and reflectively accessible. I argue that ED’s account of reflectively accessible factive perceptual (...) reasons is also prey to the conditionality problem. After that, I submit that Stroud’s influential formulation of the conditionality problem relies on a methodological requirement that is potentially dissociable from ED. So, it is possible to put ED in the service of a more modest anti-skeptical strategy. I close by suggesting that this modest anti-skeptical strategy successfully undercuts the underdetermination-based skeptical paradox. Nevertheless, it does not have substantial advantages over some forms of epistemic externalism. (shrink)

Many philosophers have found in Hume’s skeptical doubts concerning the operations of the understanding the materials for an argument that generalizes from induction to other domains, like our beliefs in the external world, other minds, and the past. This chapter offers a novel reconstruction of that argument and identifies the principles that are responsible for its capacity to generalize beyond induction. Next, it presents a classical reading of Hume’s skeptical solution and shows that Crispin Wright’s entitlement theory is close in (...) spirit to it. After that, it develops two objections to entitlement theory: it relies on the truth of deeply contingent propositions that are not a priori rational, and it does not manage to redefine the concept of epistemic rationality while offering an effective anti-skeptical response. The chapter concludes with a constructive suggestion: some passages that support a non-classical reading of Hume’s positive views on induction offer the materials to reject the steps of the skeptical argument that cause trouble for entitlement theory. (shrink)

ABSTRACT This article interprets a recently recovered manuscript, Tratado de astronomía y la reformaçión del tiempo, composed by Antonio Sánchez in New Granada c.1696, in the context of the Spanish and Renaissance cosmographies. Sánchez’s Tratado proposes a spherical astronomy, in which celestial bodies – including comets — move in orbs containing pyramidal knots that explain the changing speed observed in the motion of planets. From this astronomy and following the peninsular style of repertorios, Sánchez derives two major conclusions: the corrected (...) length of the solar year and a revised birth date of Jesus. Taking as center of reference Vélez, where Sánchez was based, these claims led to conclusions in domains ranging from calendric astronomy to eschatology, including the incorporation of the indigenous peoples into salvation narrative and a demonstration of the arrangement of the celestial orbs at the Last Judgment. Sánchez’s Tratado constitutes an expansion of the Spanish mathematical cosmography that sheds light on the production of knowledge in the Spanish-American world and, at the same time, provides elements to reassess our understanding of the global circulation of Renaissance and early modern ideas. (shrink)

In everyday life, we think of skepticism as the position of a stubborn person who has higher epistemic standards than others. Hence, the skeptic is someone who defends extravagant ideas. Some skeptics may deny that climate change is real, while others claim that the first moon landing did not take place. Contemporary philosophers think of skepticism in a different way. In their view, skepticism is the conclusion of a paradoxical argument about epistemic statuses like knowledge and reasons. A paradoxical argument (...) is a logically valid argument that, starting from seemingly plausible premises, reaches an absurd conclusion. We introduce two skeptical arguments. The regress argument purports to show that we lack reasons to believe any claim whatsoever because the search for those reasons inevitably leads to an infinite regress. The underdetermination argument seeks to prove that we lack reasons to believe that there are chairs, trees, other people, and so on; it supports that conclusion by citing skeptical hypotheses, including the idea that we might be dreaming (Descartes 1641) or the suggestion that we could be brains in a vat connected to a supercomputer that mimics the pattern of neural activity that would be produced if we were perceiving external objects (Putnam 1981). (shrink)

This article tries to establish the scopes and limits of the main interpretations on Newton during the 20th century, highlighting on the one hand the textual evidence at disposal, and on the other hand the philosophical and epistemological currents that defines the main features of those interpretations. It will be shown that the rejection of positivism is not sufficient condition for establishing an adequate interpretation and, together with the strengthening of the research from Newton’s manuscript, it is necessary a wider, (...) and more detailed model that those established by some of the most outstanding scholars like Alexandre Koyré, I. Bernard Cohen, Betty Dobbs, and Richard Westfall. (shrink)

I argue for a substantive interpretation of Carlos Vaz Ferreira’s account of intellectual flourishing as intellectual liberation. For Vaz Ferreira, I argue, there is an inescapable master-slave dynamic between language and language users, so that flourishing intellectually essentially involves a type of mastery of language that frees up thinking from enslaving linguistic/conceptual confusions and thus facilitates the acquisition of truth. Central to this project are Vaz Ferreira’s most interesting, and radical, views on the nature of language signification and thus on (...) human’s ability to accurately describe and know reality, for failing to keep these linguistic limitations in mind, Vaz Ferreira argues, is a central way for language to enslave humans to confused thinking and thus prevent their intellectual flourishing. (shrink)

Research in vision science, developmental psychology, and the foundations of cognitive science has led some theorists to posit referential mechanisms similar to indices. This hypothesis has been framed within a Fodorian conception of the early vision module. The article shows that this conception is mistaken, for it cannot handle the ‘interface problem’—roughly, how indexing mechanisms relate to higher cognition and conceptual thought. As a result, I reject the inaccessibility of early vision to higher cognition and make some constructive remarks on (...) the perception–cognition interface. -/- 1 The Case for Visual Indices 1.1 Preliminary assumptions 1.2 Transcendental arguments 1.3 Evidence from vision science 2 Visual Indices, Object Files, and Fodorian Modularity 3 The Interface Problem 3.1 Top-down attention and modularity 3.2 Selective attention and information 4 Revising the Indexing Hypothesis 4.1 Revising the perception–cognition interface 4.2 Revising the modularity of early vision 5 Concluding Remarks. (shrink)

Carter and Pritchard (2016) and Pritchard (2010, 2012, 2016) have tried to reconcile the intuition that perceptual knowledge requires only limited discriminatory abilities with the closure principle. To this end, they have introduced two theoretical innovations: a contrast between two ways of introducing error-possibilities and a distinction between discriminating and favoring evidence. I argue that their solution faces the “sufficiency problem”: it is unclear whether the evidence that is normally available to adult humans is sufficient to retain knowledge of the (...) entailing proposition and come to know the entailed proposition. I submit that, on either infallibilist or fallibilist views of evidence, Carter and Pritchard have set the bar for deductive knowledge too low. At the end, I offer an alternative solution. I suggest that the knowledge-retention condition of the closure principle is not satisfied in zebra-like scenarios. (shrink)

Call ‘a substance’ a person who is at home in a relatively stable and unified sense-making framework: a social structure that to some degree specifies which categories are important for interpreting reality, which goals are worth pursing, which character traits are admirable, etc. Call ‘an accident’ a person who is not at home in one such framework. It is tempting to think that being a substance is preferable, but I present some considerations for thinking otherwise. Mexican philosophers Emilio Uranga and (...) Jorge Portilla, I argue, present notions of accidentality as decolonial tools. Uranga’s account enables Mexicans to have positive valuation of their being independently of the approving gaze of the colonizers and their standards of value. Portilla’s thought distinguishes between pernicious accidentality resulting from the disintegration of sense-making frameworks and authentic accidentality as a condition for freedom, self-creation, and ultimately for individual and communal liberation. (shrink)

There is currently disagreement about whether the phenomenon of first-person, or de se, thought motivates a move towards special kinds of contents. Some take the conclusion that traditional propositions are unable to serve as the content of de se belief to be old news, successfully argued for in a number of influential works several decades ago.1 Recently, some philosophers have challenged the view that there exist uniquely de se contents, claiming that most of the philosophical community has been under the (...) grip of an attractive but unmotivated myth.2 At the very least, this latter group has brought into question the arguments in favor of positing special kinds of content for de se belief; I think they have successfully shown that these arguments are not as conclusive, or fully articulated, as many have taken them to be. In this paper I will address these challenges directly and I will present and defend an argument for the conclusion that the phenomenon of de se thought does indeed motivate the move to a special kind of content, content that is uniquely de se. First, I characterize a notion of de se belief that is neutral with respect to friends and foes of uniquely de se content. I then argue for a determination thesis relating de se belief to belief content: that there is no difference in de se belief without a difference in belief content. I argue that various proposals for rejecting this determination thesis are unsuccessful. In the last part of the paper, I employ this determination thesis to argue for the existence of a type of belief content that is uniquely de se. (shrink)

Based on Maldonado-Torres’s formulation of the term, we conceive the decolonial turn as a form of liberating and decolonising reason beyond the liberal and Enlightened emancipation of rationality, and beyond the more radical Euro-critiques that have failed to consistently challenge the legacies of Eurocentrism and white male heteronormativity (often Eurocentric critiques of Eurocentrism). We complement Maldonado-Torres’s account of the decolonial turn in philosophy, theory and critique by providing an analysis of the trajectories of academic philosophy and clarifying the (...) relevance of decolonising philosophy and of the decolonial turn for current efforts in transforming philosophy in face of the challenges of social movements such as the Third World Liberation Front and Black Lives Matter in the United States, and Rhodes Must Fall in South Africa and England. After a brief analysis of the trajectory and current status of philosophy as a discipline in the modern Western research university, we provide examples of the decolonial turn and of decolonising philosophy in three areas: the engagement with (1) Asian and (2) Latin American philosophies, and (3) debates in the philosophy of race and gender. (shrink)

Leibniz claims that for every possible substance S there is an individual concept that includes predicates describing everything that will ever happen to S, if S existed. Many commentators have thought that this leads Leibniz to think that all properties are had essentially, and thus that it is not metaphysically possible for substances to be otherwise than the way their individual concept has them as being. I argue against this common way of reading Leibniz’s views on the metaphysics of modality. (...) I develop a model in which individual concepts are innocent; that is, individual concepts are divine ideas that permit God to know everything that will ever happen to all possible substances, if created, but these individual concepts neither require that all properties are had essentially nor require that it is metaphysically necessary for substances to be the way their individual concepts have them as being. (shrink)

This is a critical notice of Christos Kyriacou and Kevin Wallbridge (eds.), Skeptical Invariantism Reconsidered. New York and London: Routledge, 2021. Pp. x + 324. ISBN 978-0-367-37018-3. It discusses in some detail contributions by Nevin Climenhaga, Christos Kyriacou, Michael Hannon, Kevin Wallbridge, Annalisa Coliva, and Genia Schönbaumsfeld.

Can a person from Latin America be a Catholic, or a feminist, or a democratic socialist in an authentic way? These identities come from Europe, and given the colonial history of Latin America, it seems reasonable to think that decolonizing the Latin American mind is a condition for its authenticity. Further, it seems reasonable to think that decolonization itself requires extirpating ideas and identities originating from the colonizers, especially those used to establish the colonial order. Thus, it seems that Latin (...) Americans cannot adopt such identities; authentic decolonization demands otherwise. In this paper I argue that the thought of twentieth century Mexican philosopher Jorge Portilla provides a persuasive account of the nature of authentic self-creation that allows for a kind of decolonization that makes it conceptually possible for Latin Americans to be Catholics, feminists, or democratic socialists in an authentic fashion. That is, authentic decolonization of the mind, I argue, need not involve a blanket rejection of identities originating from the colonizers; instead, it can be understood as a particular kind of authentic self-creation: one that is appropriately sensitive to the colonial history of the identities freely chosen by the agent. (shrink)

It is usual to identify initial conditions of classical dynamical systems with mathematical real numbers. However, almost all real numbers contain an infinite amount of information. I argue that a finite volume of space can’t contain more than a finite amount of information, hence that the mathematical real numbers are not physically relevant. Moreover, a better terminology for the so-called real numbers is “random numbers”, as their series of bits are truly random. I propose an alternative classical mechanics, which is (...) empirically equivalent to classical mechanics, but uses only finite-information numbers. This alternative classical mechanics is non-deterministic, despite the use of deterministic equations, in a way similar to quantum theory. Interestingly, both alternative classical mechanics and quantum theories can be supplemented by additional variables in such a way that the supplemented theory is deterministic. Most physicists straightforwardly supplement classical theory with real numbers to which they attribute physical existence, while most physicists reject Bohmian mechanics as supplemented quantum theory, arguing that Bohmian positions have no physical reality. (shrink)

In this article we argue that the social value of health research should be conceptualized as a function of both the expected benefits of the research and the priority that the beneficiaries deserve. People deserve greater priority the worse off they are. This conception of social value can be applied for at least two important purposes: in health research priority setting when research funders, policy-makers, or researchers decide between alternative research projects; and in evaluating the ethics of proposed research proposals (...) when research ethics committees assess whether the social value of the research is sufficient to justify the risks and burdens to research participants and others. In assessing how far a proposed research project will advance the interests of people who are more disadvantaged, research priority setters and RECs should examine the diseases that the research targets and the type of research. Just as certain diseases impose a greater burden on people who are more disadvantaged, so certain types of intervention and forms of research are more likely to benefit people who are more disadvantaged. We outline which populations are likely to be representative of the global worst off and identify what types of health research, and which disease categories, are priorities for these populations. (shrink)

The claim that the observation of a violation of a Bell inequality leads to an alleged alternative between nonlocality and non-realism is annoying because of the vagueness of the second term.

According to intellectualists, the will is a rational inclination towards apprehended goodness. This conception of the will makes its acts intelligible: they are explained by (i) the nature of the will as a rational inclination, and (ii) the judgement of the intellect that moves the will. From this it follows that it is impossible for an agent to will evil as such or for its own sake. In explaining wrongdoing intellectualists cite cognitive error or the disruptive influences of the passions; (...) these considerations, however, seem involuntary and at least partly exculpatory. The intellectualist needs an account that renders wrongful actions intelligible without undermining their status as responsible. I argue that Leibniz has the theoretical tools to provide at least part of an answer to this problem. In sum, an agent is directly responsible for her wrongdoing if the cognitive error or the disruptive influence of the passions that help explain this wrongdoing do not completely undermine her acting freely; an agent is indirectly responsible for her wrongdoing if she is directly responsible for previous actions which partly resulted in her wrongdoing, even if the presence of cognitive error or disruptive influence of the passions completely undermines her acting freely. (shrink)

De se attitudes seem to play a special role in action and cognition. This raises a challenge to the traditional way in which mental attitudes have been understood. In this chapter, we review the case for thinking that de se attitudes require special theoretical treatment and discuss various ways in which the traditional theory can be modified to accommodate de se attitudes.

Despite intensive exegetical work, Plato’s description of dialectic in the Sophist still raises many questions. Through a close reading of this passage that contextualizes it in the general organisation of the Sophist, this paper provides answers to these questions. After presenting the difficult text, I contend that the “vowel-kinds” are necessary conditions for the blending of kinds. Then, I interpret the “cause of divisions” mentioned by the Stranger as the kinds responsible of the dichotomous division in the first half of (...) the dialogue. In the next part, I show that 235d5-e2 does not describe a procedure of “meta-divison” as some commentators have it, but that it describes the method of division itself. Finally, I connect the difficulty and the obscurity of the passage to the fact that dialectic is the supreme science and I explain why dialectic is the science of free men. (shrink)

Le droit est traditionnellement lié à la pratique du commandement et de la hiérarchie. Il semble qu’une règle juridique établisse une immédiate relation entre une norme supérieure et une norme inférieure. La conception hiérarchique et impérative peut néanmoins être remise en cause dès lors que la phénoménologie de la règle juridique est appréhendée d’un point de vue interne, celui de ceux que l’on peut considérer comme les « utilisateurs » de la règle plutôt que ceux qui la subissent. Une approche (...) tournée vers la pratique pourrait, de cette façon, conduire à une théorie du droit plus ouverte et, d’une certaine façon, moins idéologique ou sectaire. C’est – comme le défend cet article – le programme ou mieux la promesse que l’on trouve dans l’ouvrage principal de Hart, le Concept de droit. Cet article tente de rendre cette promesse plus transparente sans toutefois dissimuler les difficultés de sa stratégie narrative et argumentative. (shrink)

The current assessment of behaviors in the inventories to diagnose autism spectrum disorders (ASD) focus on observation and discrete categorizations. Behaviors require movements, yet measurements of physical movements are seldom included. Their inclusion however, could provide an objective characterization of behavior to help unveil interactions between the peripheral and the central nervous systems. Such interactions are critical for the development and maintenance of spontaneous autonomy, self-regulation and voluntary control. At present, current approaches cannot deal with the heterogeneous, dynamic and stochastic (...) nature of development. Accordingly, they leave no avenues for real-time or longitudinal assessments of change in a coping system continuously adapting and developing compensatory mechanisms. We offer a new unifying statistical framework to reveal re-afferent kinesthetic features of the individual with ASD. The new methodology is based on the non-stationary stochastic patterns of minute fluctuations (micro-movements) inherent to our natural actions. Such patterns of behavioral variability provide re-entrant sensory feedback contributing to the autonomous regulation and coordination of the motor output. From an early age, this feedback supports centrally driven volitional control and fluid, flexible transitions between intentional and spontaneous behaviors. We show that in ASD there is a disruption in the maturation of this form of proprioception. Despite this disturbance, each individual has unique adaptive compensatory capabilities that we can unveil and exploit to evoke faster and more accurate decisions. Measuring the kinesthetic re-afference in tandem with stimuli variations we can detect changes in their micro-movements indicative of a more predictive and reliable kinesthetic percept. Our methods address the heterogeneity of ASD with a personalized approach grounded in the inherent sensory-motor abilities that the individual has already developed. (shrink)

The empirical study of belief is emerging at a rapid clip, uniting work from all corners of cognitive science. Reliance on belief in understanding and predicting behavior is widespread. Examples can be found, inter alia, in the placebo, attribution theory, theory of mind, and comparative psychological literatures. Research on belief also provides evidence for robust generalizations, including about how we fix, store, and change our beliefs. Evidence supports the existence of a Spinozan system of belief fixation: one that is automatic (...) and independent of belief rejection. Independent research supports the existence of a system of fragmented belief storage: one that relies on large numbers of causally isolated, context-sensitive stores of belief in memory. Finally, empirical and observational data support at least two systems of belief change. One system adheres, mostly, to epistemological norms of updating; the other, the psychological immune system, functions to guard our most centrally held beliefs from potential inconsistency with newly formed beliefs. Refining our under- standing of these systems can shed light on pressing real-world issues, such as how fake news, propaganda, and brainwashing exploit our psychology of belief, and how best to construct our modern informational world. (shrink)

We present in this paper a novel ontological theory of events whose central tenet is the Aristotelian distinction between the object that changes and the actual subject of change, which is what we call an individual quality. While in the Kimian tradition events are individuated by a triple ⟨ o, P, t ⟩, where o is an object, P a property, and t an interval of time, for us the simplest events are qualitative changes, individuated by a triple ⟨ o, (...) q, t ⟩, where q is an individual quality inhering in o or in one of its parts. Detaching the individuation of events from the property they exemplify results in a fine-grained theory that keeps metaphysics and semantics clearly separate, and lies between the multiplicative and the unitarian approaches. We discuss then the way language refers to events, observing that, in most cases, event descriptions refer to complex, cognitively relevant clusters of co-occurring qualitative changes, which exhibit a synchronic structure depending on the way they are described. Contra Bennett, who famously argued that the semantics of event names ultimately depends on “local context and unprincipled intuitions”, we show how the lexicon provides systematic principles for individuating such clusters and classifying them into kinds. Finally, we address some open challenges in the semantics of locative and manner modifiers. (shrink)

Astrobiocentrism is a vision that places us in a scenario of confirmation of life in the universe, either as a second genesis or as an expansion of humanity in space. It manages to raise consistent arguments in relation to questions such as what would happen to knowledge if life were confirmed in the universe, how would this change the way we understand our place in the cosmos? Astrobiocentrism raises a series of reflections in the context of confirmed discovery, and it (...) develops concepts that work directly with what would happen after irrefutable evidence has been obtained that we are not alone in space. Unlike biocentrism or ecocentrism, the astrobiocentric view is not limited to the Earth-centric perspective, and for it incorporates a multi-, inter- and transdisciplinary understanding. Therefore, the aim of this paper is to make a reflection on the astrobiocentric issues related to the challenges and problems of the discovery of life in the universe and the expansion of mankind into space. Here we explore some aspects of the transition from biogeocentrism to astrobiocentrism, astrobiosemiotics, homo mensura, moral community, planetary sustainability and astrotheology. (shrink)

When do objects at different times compose a further object? This is the question of diachronic composition. The universalist answers, ‘under any conditions whatsoever’. Others argue for restrictions on diachronic composition: composition occurs only when certain conditions are met. Recently, some philosophers have argued that restrictions on diachronic compositions are motivated by our best physical theories. In Persistence and Spacetime and elsewhere, Yuri Balashov argues that diachronic compositions are restricted in terms of causal connections between object stages. In a recent (...) article, Nikk Effingham argues that the standard objections to views that endorse restrictions on composition do not apply to a view that restricts composition according to compliance with the laws of nature. On the face of it, such restrictions on diachronic composition preserve our common-sense ontology while eliminating from it scientifically revisionary objects that travel faster than the speed of light. I argue that these attempts to restrict diachronic composition by appealing to either causal or nomological constraints face insurmountable difficulties within the context of special relativity. I discuss how the universalist should best respond to Hudson’s argument for superluminal objects, and in doing so, I present and defend a new sufficient condition for motion that does not entail that such objects are in superluminal motion. 1 Introduction2 Diachronic Composition3 Diachronic Composition and Superluminal Objects4 Restricting Diachronic Composition5 Causal and Nomological Restrictions on Composition in a Relativistic Context6 Superluminal Objects and Motion7 Conclusion. (shrink)

In a number of papers, Kit Fine introduced a theory of embodiment which distinguishes between rigid and variable embodiments, and has been successfully applied to clarify the ontological nature of entities whose parts may or may not vary in time. In particular, he has applied this theory to describe a process such as the erosion of a cliff, which would be a variable embodiment whose manifestations are the different states of erosion of the cliff. We find this theory very powerful, (...) and especially appropriate to capture the intuition that the same process may go on at different times. However, its formal principles have been subject to some criticisms, mainly concerning the mereological structure of a variable embodiment. Moreover, since the notion of variable embodiment is very general, simply saying that processes are variable embodiments is not enough to understand their ontological nature. To address these concerns, in this paper we proceed in two phases: first, we propose a revised version of Fine’s original theory adapted to the case of processes, which adopts a classical mereology instead of Fine’s hylomorphic mereology, and a temporalized constitution relation in place of Fine’s function of variable embodiment; second, we go deeper into the ontological nature of processes by revisiting the notions of homogeneity, intentionality, and telicity discussed in the literature, and propose an account based on ontological principles and not on semantic properties of predicates. This allows us to organize processes into a novel taxonomy based exclusively on their unity and individuation principles. (shrink)

This work aims to spell out clear the tensions manifested by the meeting between the project of a reflexive philosophy and psychoanalysis, from a very specific event: the publication, in 1965, of the thesis De l'interprétation: essai sur Freud by Paul Ricoeur. Our question arises from the fact that psychoanalysis has introduced one of the greatest embarrassments to the philosophies of consciousness, as it established the unconscious psychic as foundation and array of subjectivity. In contrast, Paul Ricoeur strengthens its belonging (...) to the reflective tradition initiated by Husserl, but with a fundamental deviation: in your access to subjectivity, this reflexive philosophy must take the form of a hermeneutics that interprets the signs of man’s existence. Given this, the present study seeks to find out what difficulties, tensions and contributions the reading of Freud offers to hermeneutic project proposed by Ricoeur. The article aims to show how the philosophical reading of Freud allowed Ricoeur to arbitrate the different and sometimes conflicting hermeneutics approaches around the problem of symbol. (shrink)

Many of the social deprivations of Mexico will be worsened due to the SARSCOV2 pandemic. Namely, the insufficient access to public health, lack of labor rights, and the unsuccessful government’s response to eradicate male violence against women. The historical unconcern in promoting a culture rooted in mutual aid and self-care has provoked many citizens are disconnected from their social and health rights. Thus, people’s inability to carry through one direction –stay home- is unfulfilled, in part, due to structural inequalities. I (...) affirm that effective liberty could be obtained by approving a Universal Basic Income from a feminist perspective. I conclude that the aftermath of COVID-19, which will define everyday life for a while, require the endorsement of such measure. Likewise, women as a class deserve protection from a feminist critical framework. (shrink)