Neuroenhancement involves the use of neurotechnologies to improve cognitive, affective or behavioural functioning, where these are not judged to be clinically impaired. Questions about enhancement have become one of the key topics of neuroethics over the past decade. The current study draws on in-depth public engagement activities in ten European countries giving a bottom-up perspective on the ethics and desirability of enhancement. This informed the design of an online contrastive vignette experiment that was administered to representative samples of 1000 respondents (...) in the ten countries and the United States. The experiment investigated how the gender of the protagonist, his or her level of performance, the efficacy of the enhancer and the mode of enhancement affected support for neuroenhancement in both educational and employment contexts. Of these, higher efficacy and lower performance were found to increase willingness to support enhancement. A series of commonly articulated claims about the individual and societal dimensions of neuroenhancement were derived from the public engagement activities. Underlying these claims, multivariate analysis identified two social values. The Societal/protective highlights counter normative consequences and opposes the use enhancers. The Individual/proactionary highlights opportunities and supports use. For most respondents these values are not mutually exclusive. This suggests that for many neuroenhancement is viewed simultaneously as a source of both promise and concern. (shrink)

Neuroenhancement involves the use of neurotechnologies to improve cognitive, affective or behavioural functioning, where these are not judged to be clinically impaired. Questions about enhancement have become one of the key topics of neuroethics over the past decade. The current study draws on in-depth public engagement activities in ten European countries giving a bottom-up perspective on the ethics and desirability of enhancement. This informed the design of an online contrastive vignette experiment that was administered to representative samples of 1000 respondents (...) in the ten countries and the United States. The experiment investigated how the gender of the protagonist, his or her level of performance, the efficacy of the enhancer and the mode of enhancement affected support for neuroenhancement in both educational and employment contexts. Of these, higher efficacy and lower performance were found to increase willingness to support enhancement. A series of commonly articulated claims about the individual and societal dimensions of neuroenhancement were derived from the public engagement activities. Underlying these claims, multivariate analysis identified two social values. The Societal/Protective highlights counter normative consequences and opposes the use enhancers. The Individual/Proactionary highlights opportunities and supports use. For most respondents these values are not mutually exclusive. This suggests that for many neuroenhancement is viewed simultaneously as a source of both promise and concern. (shrink)

Victoria Espinosa Santos es miembro de la Academia Chilena de la Lengua desde 2017 y forma parte de la Comisión de Lexicografía. Esta entrevista, realizada de forma virtual el 6 de julio de 2021, se concentra en los siguientes temas: las variaciones del español de América, el rol de las lenguas indígenas en el español de Chile, el trabajo de las academias de la Lengua Española, el rol de las academias en relación con la lingüística y la literatura.

El día dieciséis de julio de este año, un día después de la festividad de san Buenaventura, este santo franciscano, doctor de la Iglesia, recibió un regalo: una de las personas que aquí y ahora más conocía de su obra, pensamiento y fuentes, iba a ir a visitarlo. Ambos tenían, al fin, la oportunidad de conocerse en persona. Para sus amigos fue un regalo muy caro. Nuestro amigo Francisco de Asís Clavero Blanco nos dejó físicamente, pero sus estudios y su (...) obra perdura y perdurará con nosotros.' Decir que alguien conoce a san Buenaventura no es fácil, pues en este pensador franciscano se conjugan aspectos filosóficos, teológicos, históricos y espirituales que llevan en sí una carga histórica compleja que se desarrolla en un tiempo, a la vez, complejo, apasionante y alejado en el tiempo: el siglo XIII. No en vano, la figura de san Buenaventura fue tildada por algunos como "la más medieval de la filosofía del Medioevo".Pero Francisco de Asís Chavero se preparó para afrontar este reto y más. Nacido en Rivera del Fresno en 1945, profesó en la Orden Franciscana en la Provincia Bética el 6 de agosto de 1967. Se ordenó presbítero el 21 de julio de 1973. Cursó filosofía y teología en el Centro de Estudios Teológicos de Sevilla, en la Facultad de Teología de Granada, en el Pontificio Ateneo Antonianum y en el Centro de Investigación de Quarachi de la Orden Franciscana situada en Grottaferrata en Roma. Estos estudios hicieron que quedara corta su titulación de Licenciado en S. Teología, sección Histórico?Dogmática. En el momento en el que le sorprendió la muerte era profesor de Teología Sistemática, Antropología Teológica y Pensamiento Franciscano en el Instituto Franciscano de Murcia.El perfil de su formación, trabajo y dedicación nos ayuda a comprender por qué a Francisco de A. Chavero no se le escapaba ningún detalle del pensamiento bonaventuriano. No había aspecto de su pensamiento filosófico, teológico, espiritual o franciscano que no conociera. Su obra, sus ediciones, las fuentes, los estudios e interpretaciones sobre el doctor Seráfico eran, no sólo conocidas por él, sino también estudiadas, pensadas e interpretadas. De todo lo que acabo de decir dan fe sus escritos y las extensísimas notas a pie de página que nos regalaba. Hablando de su trabajo siempre mostraba la visión de fondo que impregnaban sus estudios: el de historiador de la teología. Esto no significa que desde esta perspectiva histórica no fuera capaz de percibir y apuntar conceptos nuevos y visiones originales.Francisco de Asís Clavero Blanco colaboró en numerosas revistas como Verdad 1, Vida, Carthaginensia, Estudios Franciscanos, Doctor Seraphicus, Themata, Archivum Franciscanum Historicurn, etc. Era miembro de la Sociedad Escotista Internacional , del Centro di Studi Bonaventuriani , Asociación Hispánica de Estudios Franciscanos y compañero de la Sociedad Española de Filosofía Medieval . Me gustaría en estas páginas repasar aunque sea brevemente el legado intelectual de este pensador franciscano. (shrink)

Atas do III Colóquio Internacional de Metafísica. [ISBN 978-85-7273-730-2]. Sumário: 1. Prazer, desejo e amor-paixão no texto de Lucrécio, por Antonio Júlio Garcia Freire; 2. Anaximandro: física, metafísica e direito, por Celso Martins Azar Filho; 3. Carta a Guimarães Rosa, por Cícero Cunha Bezerra; 4. Ante ens, non ens: La primacía de La negación em El neoplatonismo medievel, por Claudia D’Amico; 5. Metafísica e neoplatonismo, por David G. Santos; 6. Movimento e tempo no pensamento de Epicuro, por Everton (...) da Silva Rocha; 7. Críticas e elogios de Nietzche a Sócrates, por Fernanda Bulhões; 8. Sobre a Metafísica ou a respeito do jejum, por Gilvan Fogel; 9. A origem estética da ontologia hermenêutica de Luigi Pareyson, por Íris Fátima da Silva; 10. A Natureza da filosofia de Hume, por Jaimir Conte; 11. Logique ET métaphysique, por Jean-Baptiste Jainet; 12. Blaise Pascal: da recusa da metafísica da raison à metafísica do « estudo do homem », por João Emiliano Fotaleza de Aquino; 13. O niilismo no prólogo de Assim Falou Zaratustra. Por José Elielton de Sousa; 14. Presencia;Ausência: de Plotino a Procolo, por José Maria Zamora; 15. A natureza do Eros platônico, por Jovelina Maria Ramos de Souza; 16. Breve comentário acerca da origem da Gelassenheit de Heidegger a partir da mística de mestre Eckkart, por Luiz Fernando Fontes-Teixeira; 17. Humanismo e domesticação em Regras para o parque humano, por Luiz Roberto Alves dos Santos; 18. Contra a teoria de dois mundos na filosofia de Platão (República V 476e-478e), por Marcelo Pimenta Marques; 19. Sensações, impressões, projeções: as afecções do pensamento, por Markus Figueira da Silva; 20. Contribuições à história de uma metáfora: Heidegger e Nicolau de Cusa, por Oscar Federico Bauchwitz; 21. Uma impossibilidade ontológica em Schopenhauer, por Paulo César Oliveira Vasconcelos; 22. Ser e fenômeno: a Fenomenologia como teoria estética da ciência, por Pedro Paulo Coroa; 23. Para que serve a Metafísica de Aristóteles? O exemplo do movimento animal, por Pierre-marie Morel; 24. Contribuições para uma ontologia digital, por Rafael Capurro; 25. O que é o fim da metafísica, por Rodrigo Ribeiro Alves Neto; 26. A Physis na conformação do logos: linguagem e pensamento no corpus epicúreo, por Rodrigo Vidal do Nascimento; 27. O acontecimento de mundo na era da informação, por Soraya Guimarães da Silva; 28. Apofaticismo e abstração em Mark Rothko, por Vanessa Alves de Lacerda Santos. -/- . (shrink)

This paper presents a central thesis: that humanistic language is the idiomatic context in which the Wes­ tern cultural universe orworld has existence, and, by extension, where the academic world has existence and sense. In this frame, the authors analyze two main topics: a) the way in which meaning units, that name the referent University, articulate and orga­ nize humanistic contents that adjust along to the academic world which men have been postulating throughout history; and b) the evidence of inherited (...) vocabulary of Western thought in the traditional discourse of the National Autonomous University of Mexico. (shrink)

Inauguration speech at chair number 18 of the Brasilian Academy of Philosophy.

We review the definition of the Full Bayesian Significance Test (FBST), and summarize its main statistical and epistemological characteristics. We review also the Abstract Belief Calculus (ABC) of Darwiche and Ginsberg, and use it to analyze the FBST’s value of evidence. This analysis helps us understand the FBST properties and interpretation. The definition of value of evidence against a sharp hypothesis, in the FBST setup, was motivated by applications of Bayesian statistical reasoning to legal matters where the sharp hypotheses were (...) defendants statements, to be judged according to the Onus Probandi juridical principle. (shrink)

To estimate causal relationships, time series econometricians must be aware of spurious correlation, a problem first mentioned by Yule (1926). To deal with this problem, one can work either with differenced series or multivariate models: VAR (VEC or VECM) models. These models usually include at least one cointegration relation. Although the Bayesian literature on VAR/VEC is quite advanced, Bauwens et al. (1999) highlighted that “the topic of selecting the cointegrating rank has not yet given very useful and convincing results”. The (...) present article applies the Full Bayesian Significance Test (FBST), especially designed to deal with sharp hypotheses, to cointegration rank selection tests in VECM time series models. It shows the FBST implementation using both simulated and available (in the literature) data sets. As illustration, standard non informative priors are used. (shrink)

This article explores the metaphor of Science as provider of sharp images of our environment, using the epistemological framework of Objective Cognitive Constructivism. These sharp images are conveyed by precise scientific hypotheses that, in turn, are encoded by mathematical equations. Furthermore, this article describes how such knowledge is pro-duced by a cyclic and recursive development, perfection and reinforcement process, leading to the emergence of eigen-solutions characterized by the four essential properties of precision, stability, separability and composability. Finally, this article discusses (...) the role played by ontology and metaphysics in the scientific production process, and in which sense the resulting knowledge can be considered objective. (shrink)

This article discusses some continuous limit cases of Susan Haack’s crossword puzzle metaphor for the coherent development and foundation of science. The main objective of this discussion is to build a bridge between Haack’s foundherentism and the epistemological framework of objective cognitive constructivism, including its key metaphor of objects as tokens for eigen-solutions. The historical development of chemical affinity tables is used to illustrate our arguments.

Abstract This essay seeks to realize the following question: what is the correspondence between the sign and the thing that names? In reality, what is significant is closely linked with the being, however in this case the sense will be a particular manifestation of an own subjectivity; therefore the determinant relation is limited to the capacity of representation, where the meaning is connected with the socio-cultural sense. In this regard, this work seek realize this problem from the analytical approach of (...) Ludwig Wittgenstein, who is based on the method of philosophical investigation through formal logic. In this first period of development, his speculative work, which in principle leads to the search for logical foundations for mathematics, practised it in direction to the study of the nature of the representation. Subsequently, and as necessary this test delimitation, will expose the confrontation —more not necessarily contradiction— of their approaches in the light of the own Wittgenstein who, in a second reflective period poured into his later work, is obliged to discuss the foundational in his speculative work logical-philosophical topics from a pragmatic point of view. (shrink)

This article considers distinct ways of understanding the world, referred to in psychology as Functions of Consciousness or as Cognitive Modes, having as the scope of interest epistemology and natural sciences. Inspired by C.G. Jung's Simile of the Spectrum, we consider three basic cognitive modes associated to: (R) embodied instinct, experience, and action; (G) reality perception and learning; and (B) concept abstraction, rational thinking, and language. RGB stand for the primary colors: red, green, and blue. Accordingly, a conceptual map between (...) cognitive modes and primary and secondary colors is built based on the physics and physiology of color perception and epistemological characteristics of the aforementioned cognitive modes, leading to logical relations structured as an Hexagon of Opposition. Finally, this model of cognitive modes is applied to the analysis and interpretation of some important episodes in the historical development of physics and technology. (shrink)

Gene clustering is a useful exploratory technique to group together genes with similar expression levels under distinct cell cycle phases or distinct conditions. It helps the biologist to identify potentially meaningful relationships between genes. In this study, we propose a clustering method based on multivariate normal mixture models, where the number of clusters is predicted via sequential hypothesis tests: at each step, the method considers a mixture model of m components (m = 2 in the first step) and tests if (...) in fact it should be m - 1. If the hypothesis is rejected, m is increased and a new test is carried out. The method continues (increasing m) until the hypothesis is accepted. The theoretical core of the method is the full Bayesian significance test, an intuitive Bayesian approach, which needs no model complexity penalization nor positive probabilities for sharp hypotheses. Numerical experiments were based on a cDNA microarray dataset consisting of expression levels of 205 genes belonging to four functional categories, for 10 distinct strains of Saccharomyces cerevisiae. To analyze the method’s sensitivity to data dimension, we performed principal components analysis on the original dataset and predicted the number of classes using 2 to 10 principal components. Compared to Mclust (model-based clustering), our method shows more consistent results. (shrink)

We show how the Full Bayesian Significance Test (FBST) can be used as a model selection criterion. The FBST was presented by Pereira and Stern as a coherent Bayesian significance test. Key Words: Bayesian test; Evidence; Global optimization; Information; Model selection; Numerical integration; Posterior density; Precise hypothesis; Regularization. AMS: 62A15; 62F15; 62H15.

My aim in this paper is to engage with C. Thi Nguyen’s characterization of the echo chamber and to propose two things. First, I argue that a proper reading of his concept of echo chamber should make use of the notion of ignorance in the form of a structural epistemic insensitivity. My main contention is that ignorance as a substantive structural practice accounts for the epistemically deleterious effects of echo chambers. Second, I propose that from the talk of ignorance we (...) should be able to see echo chambers in terms of their more harmful impacts in our daily lives. To do that, I argue that we should think of echo chambers as tools to promote hermeneutical domination. If my representation of Nguyen’s concept is accurate, I believe we can see some important theoretical consequences stemming from the way Nguyen understands it. (shrink)

Este artigo apresenta a teoria supervalorativista da vagueza e discute a objecção, que frequentemente lhe é dirigida, segundo a qual essa teoria não consegue dar conta do fenómeno da vagueza de ordem superior.

This article explores some open questions related to the problem of verification of theories in the context of empirical sciences by contrasting three epistemological frameworks. Each of these epistemological frameworks is based on a corresponding central metaphor, namely: (a) Neo-empiricism and the gambling metaphor; (b) Popperian falsificationism and the scientific tribunal metaphor; (c) Cognitive constructivism and the object as eigen-solution metaphor. Each of one of these epistemological frameworks has also historically co-evolved with a certain statistical theory and method for testing (...) scientific hypotheses, respectively: (a) Decision theoretic Bayesian statistics and Bayes factors; (b) Frequentist statistics and p-values; (c) Constructive Bayesian statistics and e-values. This article examines with special care the Zero Probability Paradox (ZPP), related to the verification of sharp or precise hypotheses. Finally, this article makes some remarks on Lakatos’ view of mathematics as a quasi-empirical science. (shrink)

Phylogeography, a relatively new subdicipline of evolutionary biology that attempts to unify the fields of phylogenetics and population biology in an explicit geographical context, has hosted in recent years a highly polarized debate related to the purported benefits and limitations that qualitative versus quantitative methods might contribute or impose on inferential processes in evolutionary biology. Here we present a friendly, non-technical introduction to the conflicting methods underlying the controversy, and exemplify it with a balanced selection of quotes from the primary (...) biological literature, to invite the philosophy of biology community to pay attention to the elements that have played a primary role in its presumed resolution. We also present the basic features of our own metascientific take on the debate, and point out—as a preliminary step in preparation for upcoming, more detailed treatments—the importance that appeals to authority in fields external to phylogeography per se have played in the current status of this highly visible evolutionary biology dispute. (shrink)

This paper introduces pragmatic hypotheses and relates this concept to the spiral of scientific evolution. Previous works determined a characterization of logically consistent statistical hypothesis tests and showed that the modal operators obtained from this test can be represented in the hexagon of oppositions. However, despite the importance of precise hypothesis in science, they cannot be accepted by logically consistent tests. Here, we show that this dilemma can be overcome by the use of pragmatic versions of precise hypotheses. These pragmatic (...) versions allow a level of imprecision in the hypothesis that is small relative to other experimental conditions. The introduction of pragmatic hypotheses allows the evolution of scientific theories based on statistical hypothesis testing to be interpreted using the narratological structure of hexagonal spirals, as defined by Pierre Gallais. (shrink)

The full Bayesian signi/cance test (FBST) for precise hypotheses is presented, with some illustrative applications. In the FBST we compute the evidence against the precise hypothesis. We discuss some of the theoretical properties of the FBST, and provide an invariant formulation for coordinate transformations, provided a reference density has been established. This evidence is the probability of the highest relative surprise set, “tangential” to the sub-manifold (of the parameter space) that defines the null hypothesis.

El presente trabajo se circunscribe al problema de la representación y la referencialidad de la imagen, mismo que, desde la filosofía de la ciencia ha cobrado nuevos matices en el contexto de la relación entre ciencia y arte. Así pues, en esta revisión se buscará establecer tres líneas de desarrollo: en primera instancia, se planteará el problema de la representación del objeto como un campo de interés común en los ámbitos de conocimiento, tanto en la ciencia como en el arte. (...) Luego, en un segundo momento, se abordará el problema filosófico implicado en la referencialidad de la imagen, a partir de las propuestas de Max Black y Rudolph Arnheim. Finalmente, para dar respuesta a la pregunta ¿bajo qué condiciones la imagen como representación establece un objeto de referencia?, se argumentará la función epistemológica de la imagen desde el punto de vista pragmático de la semiótica trascendental. En este sentido, en este trabajo se busca establecer un punto crítico a las posturas filosóficas, tanto de Black como de Arnheim, considerando que la pregunta acerca del objeto de referencia y la imagen están en relación con las condiciones de verdad que fundamentan un sistema de lenguaje. Por ello, a partir de la semiótica pragmática y la semiótica trascendental se postularán criterios diferentes al problema de la referencialidad de la imagen, y en esta dirección, se plantearán las condiciones pragmáticas de verdad que permiten justificar el conocimiento en la imagen derivado de las prácticas epistemológicas tanto en la ciencia como en el arte. (shrink)

Decoupling is a general principle that allows us to separate simple components in a complex system. In statistics, decoupling is often expressed as independence, no association, or zero covariance relations. These relations are sharp statistical hypotheses, that can be tested using the FBST - Full Bayesian Significance Test. Decoupling relations can also be introduced by some techniques of Design of Statistical Experiments, DSEs, like randomization. This article discusses the concepts of decoupling, randomization and sparsely connected statistical models in the epistemological (...) framework of cognitive constructivism. (shrink)

We’ll approach the notion of object in Wittgenstein’s Tractatus LogicoPhilosophicus (1921), initially from the so-called “substance argument”. The discourse about necessary conditions for the propositional sense cannot be treated in terms of truth or falsity in the Tractatus without resulting in a infinite regress. Such a situation is avoided by postulating a substance made up of simple objects, thus ensuring the assumed total determination of sense. Passages from the Notebooks (1914-1916) suggest that the idea of simples is given in the (...) ideia of logical analysis and is reached without the necessity of examples for objects. Another early Wittgenstein’s remarks provide examples for objects based on itens of phenomenical nature, such as a point in the visual field. An important analogy for the phenomenical approach for the object, which is found in the aphorisms 2.013-2.0131 of Tractatus, presents a problem for the absolute simplicity. This problem concerns the notion of form, a concept that attributes an ontological dependence to the object given by its essencial capacity of occurrence in atomic facts. The form of the objects results from an appropriation of the Context Principle used by Frege in his Grundlagen der Arithmetik (1884) and differs from the notions of pictorial form and logical form. The dependence assigned to the object through its form contradicts the independent subsistence established by its simplicity. The Tractarian object results from necessary demands for determination of propositional sense, reached by means of an clarificatory analysis which prioritizes the transformative and regressive modes of analysis. Simplicity and Context Principle are, under this perspective, rules of a syntax for a logical or significative use of language, which are reflected in the Tractarian ontology through the ideia that the logico-philosophical investigation of language reveals essencial aspects of the intimate structure of the world. (shrink)

This paper has three main objectives: (a) Discuss the formal analogy between some important symmetry-invariance arguments used in physics, probability and statistics. Specifically, we will focus on Noether’s theorem in physics, the maximum entropy principle in probability theory, and de Finetti-type theorems in Bayesian statistics; (b) Discuss the epistemological and ontological implications of these theorems, as they are interpreted in physics and statistics. Specifically, we will focus on the positivist (in physics) or subjective (in statistics) interpretations vs. objective interpretations that (...) are suggested by symmetry and invariance arguments; (c) Introduce the cognitive constructivism epistemological framework as a solution that overcomes the realism-subjectivism dilemma and its pitfalls. The work of the physicist and philosopher Max Born will be particularly important in our discussion. (shrink)

Comments presented at the 35th International Seminar on the -- New Institutional Economics -- Empirical Methods for the Law; Syracuse, 2018.

Although logical consistency is desirable in scientific research, standard statistical hypothesis tests are typically logically inconsistent. To address this issue, previous work introduced agnostic hypothesis tests and proved that they can be logically consistent while retaining statistical optimality properties. This article characterizes the credal modalities in agnostic hypothesis tests and uses the hexagon of oppositions to explain the logical relations between these modalities. Geometric solids that are composed of hexagons of oppositions illustrate the conditions for these modalities to be logically (...) consistent. Prisms composed of hexagons of oppositions show how the credal modalities obtained from two agnostic tests vary according to their threshold values. Nested hexagons of oppositions summarize logical relations between the credal modalities in these tests and prove new relations. (shrink)

In this article, we discuss some issues concerning magical thinking—forms of thought and association mechanisms characteristic of early stages of mental development. We also examine good reasons for having an ambivalent attitude concerning the later permanence in life of these archaic forms of association, and the coexistence of such intuitive but informal thinking with logical and rigorous reasoning. At the one hand, magical thinking seems to serve the creative mind, working as a natural vehicle for new ideas and innovative insights, (...) and giving form to heuristic arguments. At the other hand, it is inherently difficult to control, lacking effective mechanisms needed for rigorous manipulation. Our discussion is illustrated with many examples from the Hebrew Bible, and some final examples from modern science. (shrink)

Although there is increasing recognition that theory and practice in science are often inseparably intertwined, discussions of scientific controversies often continue to focus on theory, and not practice or methodologies. As a contribution to constructing a framework towards understanding controversies linked to scientific practices, we introduce the notion of borrowed epistemic credibility, to describe the situation in which scientists exploit fallacious similarities between accepted tenets in other fields to garner support for a given position in their own field. Our proposal (...) is based on the analysis of a recent controversy in phylogeography, a biological subdiscipline concerned with the study of the historical causes of variation in genetic diversity within species in concrete biogeographical locations. Through a review of the arguments that support the two conflicting phylogeographic schools, we show that ‘theory’ plays essentially no role as a foundation of the controversy, whereas both sides borrow epistemic credibility from sources such as formal logic, similarity of results to those in other scientific areas, the authority of prominent scientists, or the presumed superiority of quantitative vs. verbal reasoning. Our case study underscores the indivisibility of theory and practice and provide a means to re-examine important philosophical issues such as the meaning of inference, rationality, justification, and objectivity in scientific practice. (shrink)

El propósito de este ensayo es mostrar un ámbito especulativo, necesario para el investigador social de la comunicación, para el entendimiento e investigación del fenómeno comunicativo en tanto hecho histórico-cultural. En razón de esto, se intenta describir una parte de Filosofía Alemana de la Historia, para exponer la utilidad de su lenguaje, categorías y relaciones, como instrumento teórico en la actividad analítica e interpretativa del comunicólogo, en aras de poder determinar, de manera general e integradora, el proceso histórico de la (...) comunicación, entendida esta última como manifestación semiótica de una cultura, pueblo, nación... (shrink)

The main goal of this article is to use the epistemological framework of a specific version of Cognitive Constructivism to address Piaget’s central problem of knowledge construction, namely, the re-equilibration of cognitive structures. The distinctive objective character of this constructivist framework is supported by formal inference methods of Bayesian statistics, and is based on Heinz von Foerster’s fundamental metaphor of objects as tokens for eigen-solutions. This epistemological perspective is illustrated using some episodes in the history of chemistry concerning the definition (...) or identification of chemical elements. Some of von Foerster’s epistemological imperatives provide general guidelines of development and argumentation. (shrink)

A new Evidence Test is applied to the problem of testing whether two Poisson random variables are dependent. The dependence structure is that of Holgate’s bivariate distribution. These bivariate distribution depends on three parameters, 0 < theta_1, theta_2 < infty, and 0 < theta_3 < min(theta_1, theta_2). The Evidence Test was originally developed as a Bayesian test, but in the present paper it is compared to the best known test of the hypothesis of independence in a frequentist framework. It is (...) shown that the Evidence Test is considerably more powerful when the correlation is not too close to zero, even for small samples. (shrink)

In this paper epistemological, ontological and sociological questions concerning the statistical significance of sharp hypotheses in scientific research are investigated within the framework provided by Cognitive Constructivism and the FBST (Full Bayesian Significance Test). The constructivist framework is contrasted with the traditional epistemological settings for orthodox Bayesian and frequentist statistics provided by Decision Theory and Falsificationism.

Este artículo tiene el objetivo de explorar algunas funciones semióticas que constituyen el espacio urbano. Se revisarán algunas categorías y operaciones semióticas relevantes en la comprensión del espacio para que, desde ahí, se pueda explorar el sentido de la noción Centro Histórico como un concepto fundamental en la construcción del imaginario social en las ciudades de occidente.

This article presents a simple derivation of optimization models for reaction networks leading to a generalized form of the mass-action law, and compares the formal structure of Minimum Information Divergence, Quadratic Programming and Kirchhoff type network models. These optimization models are used in related articles to develop and illustrate the operation of ontology alignment algorithms and to discuss closely connected issues concerning the epistemological and statistical significance of sharp or precise hypotheses in empirical science.

Simultaneous hypothesis tests can fail to provide results that meet logical requirements. For example, if A and B are two statements such that A implies B, there exist tests that, based on the same data, reject B but not A. Such outcomes are generally inconvenient to statisticians (who want to communicate the results to practitioners in a simple fashion) and non-statisticians (confused by conflicting pieces of information). Based on this inconvenience, one might want to use tests that satisfy logical requirements. (...) However, Izbicki and Esteves shows that the only tests that are in accordance with three logical requirements (monotonicity, invertibility and consonance) are trivial tests based on point estimation, which generally lack statistical optimality. As a possible solution to this dilemma, this paper adapts the above logical requirements to agnostic tests, in which one can accept, reject or remain agnostic with respect to a given hypothesis. Each of the logical requirements is characterized in terms of a Bayesian decision theoretic perspective. Contrary to the results obtained for regular hypothesis tests, there exist agnostic tests that satisfy all logical requirements and also perform well statistically. In particular, agnostic tests that fulfill all logical requirements are characterized as region estimator-based tests. Examples of such tests are provided. (shrink)

Sortition, i.e. random appointment for public duty, has been employed by societies throughout the years as a firewall designated to prevent illegitimate interference between parties in a legal case and agents of the legal system. In judicial systems of modern western countries, random procedures are mainly employed to select the jury, the court and/or the judge in charge of judging a legal case. Therefore, these random procedures play an important role in the course of a case, and should comply with (...) some principles, such as transparency and complete auditability. Nevertheless, these principles are neglected by random procedures in some judicial systems, which are performed in secrecy and are not auditable by the involved parties. The assignment of cases in the Brazilian Supreme Court is an example of such a procedure, for it is performed using procedures unknown to the parties involved in the judicial cases. This article presents a review of how sortition has been historically employed by societies and discusses how Mathematical Statistics may be applied to random procedures of the judicial system, as it has been applied for almost a century on clinical trials, for example. A statistical model for assessing randomness in case assignment is proposed and applied to the Brazilian Supreme Court. As final remarks, guidelines for the development of good randomization procedures are outlined. (shrink)

Heinz Von Forester characterizes the objects “known” by an autopoietic system as eigen-solutions, that is, as discrete, separable, stable and composable states of the interaction of the system with its environment. Previous articles have presented the FBST, Full Bayesian Significance Test, as a mathematical formalism specifically designed to access the support for sharp statistical hypotheses, and have shown that these hypotheses correspond, from a constructivist perspective, to systemic eigen-solutions in the practice of science. In this article several issues related to (...) the role played by language in the emergence of eigen-solutions are analyzed. The last sections also explore possible connections with the semiotic theory of Charles Sanders Peirce. (shrink)

El presente artículo busca hacer una revisión del concepto de verdad como fundamento del conocimiento científico: desde el pragmatismo de William James y Jürgen Habermas hasta las nociones pragmáticas de Charles -/- Sanders Peirce, con la intención de mostrar los rasgos pertinentes -/- e insuficiencias de cada postura. De manera complementaria, se -/- buscará dar cuenta de los niveles: pragmático (semiótico-filosófico) -/- y pragmatista (psicológico), en los que funciona dicho concepto -/- dentro de la filosofía peirciana. Finalmente, tal esbozo teórico (...) nos permitirá establecer una -/- definición operativa de verdad como condición trascendental, y -/- que resulte menos problemática para representar el conocimiento -/- científico. (shrink)

Abstract: In the present work we have made a critical review of the philosophical propo­ sal of Norwood R. Hanson with the aim of exposing the limits of its theoretical approach on the problem of interpretation in science. The first part of this work exposes the hansonian project, looking for evidence of his contributions to the philosophy of science and scientific thinking. In the following two sections we present a critique to his philosophical proposal. We present two exercises of philosophical (...) reflection that constitute two complementary moments of analysis. On one hand, at the level of methodological analysis, we present a discussion about how the “reversible perspective figures” that have been used for the author as arguments to explain his philosophical proposal, are insufficient to the descrip­ tion of the process of observation and interpretation. On the other hand, at the theoretical level, we question his notion of language and categories to show that his theoretical pro­ posed “vision-interpretation” has based on epistemological and analytic notions. From this perspective, it will be shown that the “hermeneutical-interpretative” approach of Hanson is incomplete, since it does not develop towards an ontology of language and observation. (shrink)

In this paper, the notion of degree of inconsistency is introduced as a tool to evaluate the sensitivity of the Full Bayesian Significance Test (FBST) value of evidence with respect to changes in the prior or reference density. For that, both the definition of the FBST, a possibilistic approach to hypothesis testing based on Bayesian probability procedures, and the use of bilattice structures, as introduced by Ginsberg and Fitting, in paraconsistent logics, are reviewed. The computational and theoretical advantages of using (...) the proposed degree of inconsistency based sensitivity evaluation as an alternative to traditional statistical power analysis is also discussed. (shrink)

O Fisicalismo tem sido a posição filosófica monista mais aceita no mainstream do debate contemporâneo sobre a natureza do mental. Mas o que significa dizer que tudo o que existe é “físico”? O presente trabalho busca responder à pergunta: Como as teses fisicalistas contemporâneas têm definido o termo ‘físico’ em suas proposições? Para respondê-la foi realizada uma investigação teórico-filosófica baseada em revisão bibliográfica e análise lógica e conceitual. Quatro categorias gerais de definição do termo ‘físico’ foram identificadas numa revisão da (...) literatura. Existem igualmente fortes críticas às propostas de definição em toda a discussão filosófica. Não temos uma definição incontroversa do que seja uma propriedade física, tampouco consenso sobre qual deveria ser a formulação mais adequada da tese fisicalista. Assim, a questão que se coloca é: Por que estamos discutindo o valor de verdade de uma tese que nem mesmo tem conseguido ser formulada de forma adequada? (shrink)

Abstract This paper seeks to give an account of the semiotic and interpretive processes involved in the ambiguity of media representations and, in particular, of new and of different forms of construccion-difusion of information. For this reason, it is deemed the massive dissemination of information and journalistic exercis as a semiotic process in the construction of a fictitious reality. In this regard, it i sought to account for the media representation, as the contrast of the uniform character of the mass (...) expression (context of production) and the diversity of interpretations (context of reception). This review examines both component which are the concrete support that allows the individual to mean social conten non-, mid-, and intentional, thereby fostering a strong sense of social belonging. (shrink)

Optimization and Stochastic Processes Applied to Economy and Finance. Textbook for the BM&F-USP (Brazilian Mercantile and Futures Exchange - University of Sao Paulo) Master's degree program in Finance.

This article analyzes the role of entropy in Bayesian statistics, focusing on its use as a tool for detection, recognition and validation of eigen-solutions. “Objects as eigen-solutions” is a key metaphor of the cognitive constructivism epistemological framework developed by the philosopher Heinz von Foerster. Special attention is given to some objections to the concepts of probability, statistics and randomization posed by George Spencer-Brown, a figure of great influence in the field of radical constructivism.

This paper seeks to establish the reflexive fundamentals about the importance of language in initiave-functional college education, with the general objective of finding and developing categories that allow synthesizing schemes of different approaches to language, in order to contribute to the teaching practice with discourse analysis -/- techniques, which favor processes that promote the pupils’operative intellectual habits. To present this, we will show some propositions that underlie didactic strategies we have used, to motivate, stimulate, and provoke participation from the students (...) in the teaching-learning process of the topics raised in the different subjects that integrate the Sciences of Communication course at the National Autonomous University of Mexico (UNAM). -/- Therefore, the aim of this exposition of causes is to define: 1) our experiential context so to make explicit the limitations and challenges we experiment with and face in this academic exercise to provoke the pupils’ amazement or at least keep their interest; and 2) the theoretical assumptions that underlie our investigation about the relationship between observed language (system) and lived language (act). (shrink)

According to buck-passers about art, such as Dominic Lopes, every work of art belongs to some art. I distinguish two versions of the buck-passing theory of art—what I call the double-buck-passers’ (DBP) view and the single-buck-passers’ (SBP) view—and point out that Lopes’s view is an instance of the latter. Then I argue the SBP view faces a dilemma, each horn of which leads to trouble. In doing so, I explore uncharted territory: the implications of vagueness for theories of art. I (...) conclude that buck-passers should not be single-buck-passers. (shrink)

The notion “language” seems to be stablished in a problematic and confused way: although certainly it shows an essential reality of man, on the other hand it designates various areas within the same cultural reality. This essay parts from a supposition: only through verbal -/- signs (words) we can reach Knowledge. To demonstrate the previous -/- statement, we will show the approaches of philosophers and specialist, in their own scenario, consider the word as the language, like a -/- distinctive characteristic (...) of the human, that expresses its own rational -/- condition. And by virtue of this, it is aimed at creating a space for -/- reflection about the essential quality in human language, understood -/- not -/- as a repository of knowledge, but as the knowledge itself, the expression of the spirit of a people, loyal to its own image. (shrink)