Various approaches have emerged over the last several decades to meet the challenges and complexities of anticipating and responding to the potential impacts of emerging technologies. Although many of the existing approaches share similarities, they each have shortfalls. This paper takes as the object of its study Anticipatory Ethics for Emerging Technologies (ATE) to technology assessment, given that it was formatted to address many of the privations characterising parallel approaches. The ATE approach, also in practice, presents certain areas for retooling, (...) such as how it characterises levels and objects of analysis. This paper results from the work done with the TechEthos Horizon 2020 project in evaluating the ethical, legal, and social impacts of climate engineering, digital extended reality, and neurotechnologies. To meet the challenges these technology families present, this paper aims to enhance the ATE framework to encompass the variety of human processes and material forms, functions, and applications that comprise the socio-technical systems in which these technologies are embedded. (shrink)

This volume has 41 chapters written to honor the 100th birthday of Mario Bunge. It celebrates the work of this influential Argentine/Canadian physicist and philosopher. Contributions show the value of Bunge’s science-informed philosophy and his systematic approach to philosophical problems. The chapters explore the exceptionally wide spectrum of Bunge’s contributions to: metaphysics, methodology and philosophy of science, philosophy of mathematics, philosophy of physics, philosophy of psychology, philosophy of social science, philosophy of biology, philosophy of technology, moral philosophy, social and political (...) philosophy, medical philosophy, and education. The contributors include scholars from 16 countries. Bunge combines ontological realism with epistemological fallibilism. He believes that science provides the best and most warranted knowledge of the natural and social world, and that such knowledge is the only sound basis for moral decision making and social and political reform. Bunge argues for the unity of knowledge. In his eyes, science and philosophy constitute a fruitful and necessary partnership. Readers will discover the wisdom of this approach and will gain insight into the utility of cross-disciplinary scholarship. This anthology will appeal to researchers, students, and teachers in philosophy of science, social science, and liberal education programmes. 1. Introduction Section I. An Academic Vocation Section II. Philosophy Section III. Physics and Philosophy of Physics Section IV. Cognitive Science and Philosophy of Mind Section V. Sociology and Social Theory Section VI. Ethics and Political Philosophy Section VII. Biology and Philosophy of Biology Section VIII. Mathematics Section IX. Education Section X. Varia Section XI. Bibliography. (shrink)

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)

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)

This article gives a conceptual review of the e-value, ev(H|X) – the epistemic value of hypothesis H given observations X. This statistical significance measure was developed in order to allow logically coherent and consistent tests of hypotheses, including sharp or precise hypotheses, via the Full Bayesian Significance Test (FBST). Arguments of analysis allow a full characterization of this statistical test by its logical or compositional properties, showing a mutual complementarity between results of mathematical statistics and the logical desiderata lying at (...) the foundations of this theory. (shrink)

Transplantation continues to push the frontiers of medicine into domains that summon forth troublesome ethical questions. Looming on the frontier today is human facial transplantation. We develop criteria that, we maintain, must be satisfied in order to ethically undertake this as-yet-untried transplant procedure. We draw on the criteria advanced by Dr. Francis Moore in the late 1980s for introducing innovative procedures in transplant surgery. In addition to these we also insist that human face transplantation must meet all the ethical requirements (...) usually applied to health care research. We summarize the achievements of transplant surgery to date, focusing in particular on the safety and efficacy of immunosuppressive medications. We also emphasize the importance of risk/benefit assessments that take into account the physical, aesthetic, psychological, and social dimensions of facial disfiguration, reconstruction, and transplantation. Finally, we maintain that the time has come to move facial transplantation research into the clinical phase. (shrink)

Main Response Topics ? Introduction ? Open display and public evaluation ? Publicity versus patient privacy ? Facial tissue donation ? Validity of Louisville Instrument for Risk Acceptance ? Patients' understanding of risk ? Face versus hand transplantation ? Rejection rates/risks ? Patient compliance ? Exit strategy ? Functional recovery ? Societietal implications ? Psychological implications ? Conclusion: Uncertainty likely to persist.

This lavishly illustrated book highlights the conservation importance of congregatory animals species--those which gather in vast groups. It also focuses on the irreplaceability of the congregation sites which are able to support such large gatherings of animals, fish, or birds.

Psychiatrists such as Michael Fitzgerald, Christopher Gillberg and Yoshiki Ishisaka diagnosed Ludwig Wittgenstein posthumously with Autism Spectrum Disorder (ASD). Taking this diagnosis into account, the present paper discusses how Wittgenstein's philosophy reveals his cognitive difficulties. Wittgenstein's grammatical inquiries are particularly investigated here, highlighting his misunderstandings concerning the use of words – specially, his misunderstandings concerning analogies, which he tended to interpret literally.

No ensaio “Wittgenstein on mathematics”, publicado no Oxford Handbook of Wittgenstein, Michael Potter procura não apenas analisar por que a filosofia da matemática de Wittgenstein é tão controvertida entre filósofos e matemáticos como justificar essa situação. Com esse intuito, Potter enfatiza o caráter inacabado das reflexões de Wittgenstein sobre a matemática. Neste artigo, tem-se por objetivo explicitar algumas inconsistências e contradições no pensamento matemático de Wittgenstein que ratificam as críticas que esse autor vem recebendo há décadas, mas que não (...) tiveram a mesma atenção dos especialistas que os comentários de Wittgenstein sobre os teoremas da incompletude de Kurt Gödel e suas discussões com Alan Turing sobre os fundamentos da matemática. (shrink)

Resumen En su recepción del Concilio Vaticano II la Iglesia latinoamericana -focalizada en el problema de la pobreza-, tomó distancia de la teología del desarrollo planteada en Gaudium et spes y de la antropología subyacente, sea soslayando este concepto como expresión de la ideología “desarrollista”, sea neutralizando su relevancia a través de la expansión indefinida de su significado, y en todos los casos subordinándolo a la idea y el objetivo de la liberación. Pero su visión unilateral de la pobreza, que (...) interpreta como consecuencia virtualmente exclusiva de las “estructuras de pecado”, lleva inevitablemente a una visión maniquea de la vida social entendida en términos de antagonismo de clases, y empuja por su propia lógica a la acción revolucionaria. Al mismo tiempo, pasa por alto el desafío decisivo para derrotar la pobreza, que no es únicamente la mejor distribución de la riqueza sino también y ante todo su creación. En esto consiste el desarrollo económico, fenómeno moderno pero posibilitado por la capacidad de iniciativa e invención característica del ser humano como imagen de Dios. Mientras los caminos de liberación preconizados por la teología de la liberación y la teología del pueblo han fracasado de modo inapelable, el sistema económico, político y cultural que Michael Novak denominara “capitalismo democrático” es el único que ha demostrado y sigue demostrando capacidad efectiva para liberar las energías creadoras de la sociedad, permitiendo a los pobres prosperar y convertirse en artífices de su propio destino.After the Second Vanean Council, the theology of “development” presented by Gaudium et spes was overlooked in the Latín American Church in favor of the concept of "Uberalion”. Under-lying this option lay a unilateral vision of povery, conceived exclusively as the outcome of the “structures o/sin”. This diagnosis fostered class struggle and revolutionary action, while providing no clue as to how to overcome poverty through the creation of wealth. A more adequate approach should seek for institutional arrangements that provide conditions for both Beration and development. The social system of “democratic capitalism” is the only one capable of generating true economic development, making it possible for its citizens to display their creative energy and become protagonists of their own destiny. (shrink)

Este trabajo presenta la fórmula del comunitarismo (Michael Walzer y sobre todo, Amitai Etzioni) para contrarrestar los problemas de desintegración social de las sociedades postindustriales. Dicha fórmula está basada en una «reforma de conciencia» que se debe lograr a través de la educación para fomentar la tolerancia social. El análisis se centra en el carácter funcional que asume este modelo y en los problemas que presentan sus fundamentos. Por último, se propone una alternativa basada en el sistema de derechos.

Este trabajo analiza críticamente la caracterización del comunitarismo (Michael Walzer y Amitai Etzioni) respecto de los problemas de desintegración social de las sociedades post-industriales (diagnóstico social) y las categorías propuestas (tolerancia, solidaridad y resocialización moral) para solucionar dichos problemas y sus consecuencias (apatía ciudadana, desinterés por los asuntos públicos, falta de compromiso social, criminalidad, vandalismo, etc.) El análisis se centra en el carácter funcional que asume el modelo de integración social comunitarista y en los problemas que presentan los fundamentos (...) de ese modelo (solidaridad y tolerancia). (shrink)

There are communities in which disadvantaged groups experience severe inequality. For instance, poor and indigent families face many difficulties accessing their social rights. Their condition is largely the consequence of the wrong choices of those in power, either historical or more recent choices. The lack of opportunities of these deprived citizens is due to state omissions. In such communities, it is not unusual for homeless members of these particular groups to occupy abandoned lands and build their shelters there. However, almost (...) everywhere, these actions constitute a crime. The typical response to this situation is prosecution and punishment. In this paper, I will defend the occupation of public places as a consequence of the failure of governments to solve the problem of housing, and I will argue that we must distinguish a social claim from a crime and avoid the use of criminal law in these “occupation cases”. I will also argue that our right—as a community—to blame and punish these “squatters” is eroded by the fact that we perpetrated their situation of injustice. (shrink)

Propõe o ensino das duas linguagens fundamentais - de Língua Materna e de Matemática - através da argumentação para que se articule o ensino de todas as disciplinas. Ao final, faz uma proposta global de avaliação para a escola, centrada em textos argumentativos, transformando a "cola" consentida em consulta necessária.

Dung’s argumentation frameworks have been applied for over twenty years to the analysis of argument justification. This representation focuses on arguments and the attacks among them, abstracting away from other features like the internal structure of arguments, the nature of utterers, the specifics of the attack relation, etc. The model is highly attractive because it reduces most of the complexities involved in argumentation processes. It can be applied to different settings, like the argument evaluation of an individual agent or the (...) case of dialectic disputes between two agents (pro and con), or even in multi-agent collective argumentation. The latter case involves agents with possibly different arguments and/or opinions on how to evaluate them, leading to the possibility of considering multiple sets of arguments and attack relations. Two basic questions can be asked here, namely ‘what to aggregate’ and ‘how to aggregate’. The former concerns what kinds of entities do the agents intend to choose (arguments, attacks, assessments, etc.), while the second one focuses on which aggregation mechanisms yield rational choices (voting on arguments, merging procedures to obtain a common argumentation framework, deliberation processes, etc.). In particular, the question about the rationality of a collective argument choice relates this topic to Social Choice and Judgment Aggregation theories, while its associated strategic issues relate it to Game Theory. The research efforts on the disparate problems elicited by collective argumentation have generated a considerable corpus of literature that deserves an orderly evaluation. This survey is intended as a contribution to that end. (shrink)

ABSTRACTContrary to what some critics of epistemic democracy claim, the association between democracy and truth does not necessarily make the former inhospitable to conflict, contestation, and pluralism. With the help of John Stuart Mill and William James, truth can be interpreted so as to make it compatible with a democratic politics that appreciates conflict and dissent. In some circumstances, truth claims are politically relevant and should become the object of democratic deliberation.

The problems that arise from the presence of self-attacking ar- guments and odd-length cycles of attack within argumentation frameworks are widely recognized in the literature on defeasible argumentation. This paper introduces two simple semantics to capture different intuitions about what kinds of arguments should become justified in such scenarios. These semantics are modeled upon two extensions of argumentation frameworks, which we call sustainable and tolerant. Each one is constructed on the common ground of the powerful concept of admissibility introduced by (...) Dung in [10]. The novelty of this approach consists in viewing the admissibility of a subset of arguments as relative to potentially challenging subsets of arguments. Both sustainable and tolerant semantics are more credulous than preferred semantics (i.e. they justify at least the same arguments, and possibly more). Given certain sufficient conditions they coincide among them as well as with other semantics introduced by Dung. (shrink)

O artigo busca elaborar um conceito de liberdade democrática como desenvolvimento de si, resistência à opressão e à injustiça epistêmica mediante engajamento crítico com as obras de Paulo Freire, Amílcar Cabral e Augusto Boal. No pensamento dos três autores, democracia, liberdade e desenvolvimento de si constituem uma tríade de mútua influência, de sorte que o pleno exercício de quaisquer desses itens é impossível na ausência de qualquer um dos outros dois. Trata-se de mostrar, além disso, a maneira pela qual a (...) opressão é compreendida nos trabalhos dos três pensadores como o oposto da liberdade, e a injustiça epistêmica, como uma dimensão psíquica da opressão. (shrink)

In this paper we provide a compact presentation of the verisimilitudinarian approach to scientific progress (VS, for short) and defend it against the sustained attack recently mounted by Alexander Bird (2007). Advocated by such authors as Ilkka Niiniluoto and Theo Kuipers, VS is the view that progress can be explained in terms of the increasing verisimilitude (or, equivalently, truthlikeness, or approximation to the truth) of scientific theories. According to Bird, VS overlooks the central issue of the appropriate grounding of scientific (...) beliefs in the evidence, and it is therefore unable (a) to reconstruct in a satisfactory way some hypothetical cases of scientific progress, and (b) to provide an explanation of the aversion to falsity that characterizes scientific practice. We rebut both of these criticisms and argue that they reveal a misunderstanding of some key concepts underlying VS. (shrink)

In this paper I outline the PAIR account of joint attention as a perceptual-practical, affectively charged intentional relation. I argue that to explain joint attention we need to leave the received understanding of propositions and propositional attitudes and the picture of content connected to it behind and embrace the notions of subject mode and position mode content. I also explore the relation between joint attention and communication.

Theory change is a central concern in contemporary epistemology and philosophy of science. In this paper, we investigate the relationships between two ongoing research programs providing formal treatments of theory change: the (post-Popperian) approach to verisimilitude and the AGM theory of belief change. We show that appropriately construed accounts emerging from those two lines of epistemological research do yield convergences relative to a specified kind of theories, here labeled “conjunctive”. In this domain, a set of plausible conditions are identified which (...) demonstrably capture the verisimilitudinarian effectiveness of AGM belief change, i.e., its effectiveness in tracking truth approximation. We conclude by indicating some further developments and open issues arising from our results. (shrink)

The body of Eva in Thomas Aquinas The constitution of the first female body or the body of Eva presents several physical and metaphysical problems, problems that have gone through the centuries and reach the present, generating social and cultural consequences for women. The non-existence of parents demands from Aquino answers that go beyond the anthropological and biological and lead to the search of philosophical answers intertwined with the theological ones. Thomas Aquinas provides rational answers although the background is of (...) faith, and even, with literal interpretations of the Sacred Scriptures now abandoned. The Aquinate makes an intellectual effort to find answers in a rational field because the matter of the body of the first woman brings difficulties for its elucidation and understanding. As in other parts of his extensive work, Thomas Aquinas, follows the biological and physical works of Aristotle. Although the Aristotelian background is in line with Christian thought, Aquinas shows his extraordinary capacity for synthesis between the faith received and reason argued, between revelation and the principles of reason. (shrink)

Micro Credit (MC) programs lend money to poor borrowers using innovative mechanisms such as group lending under joint liability while successfully accounting for the presence of asymmetric information in underdeveloped financial markets. MC programs have achieved what the conventional financial institutions and the government have not been able to: lend to the poor, impressive loan recuperation, and a positive impact in poverty reduction. This article analyzes the performance of ALSOL, an MC program in Chiapas, México, for 2151 participants in urban (...) and rural areas for the time period between July 2000 and July 2001. While loan recuperation is high (95%), administrative costs also remain high. Socially responsible lenders and donors play a key role in providing continuous funding to MC programs and assisting in reducing the level of poverty. (shrink)

En el presente artículo, el autor analiza la adecuada reinserción social del recluso como finalidad de la ejecución de la pena privativa de la libertad. Con ese propósito, el jurista identifica los diferentes modelos de readaptación social (“readaptación para la moralidad” y “readaptación para la legalidad”), con sus virtudes y críticas. Por último, Arocena examina los condicionamientos que impone un arquetipo de Estado social y democrático de Derecho, a la hora de adherir a uno u otro de esos modelos, y (...) finalmente expone sus razones a favor de un paradigma de readaptación social mínimo. (shrink)

This paper questions the notion that states may be justified in denying certain prisoners the right to vote as a means of distancing themselves from particularly grave wrongs. Christopher Bennett has recently defended prisoner disenfranchisement as a fair and deserved retributive punishment for crimes, and Mary Sigler and Andrew Altman have argued in favor of prisoner disenfranchisement as a civil restriction. All three proponents agree that disenfranchisement should be reserved for those guilty of the most serious offenses. I assert that (...) it is inappropriate to treat citizens in this manner and will advocate for the right to vote, whether disenfranchisement is perceived as a form of punishment or as a civil measure. I will present two arguments against disenfranchisement as it impacts both citizens and political community at large. First, it excludes citizens from the democratic arena and restricts the opportunity to reintegrate offenders into the political community. While a criminal sentence is intended to be burdensome, the burden associated with disenfranchisement extends beyond the appropriate penal scope. (shrink)

Dung’s argumentation frameworks are formalisms widely used to model interaction among arguments. Although their study has been profusely developed in the field of Artificial Intelligence, it is not common to see its treatment among those less connected to computer science within the logical-philosophical community. In this paper we propose to bring to that audience a proof-theory for argument justification based on tableaux, very similar to those the Logic students are familiar with. The tableaux enable to calculate whether an argument or (...) subset of arguments are accepted or rejected in accordance to Dung’s preferred and grounded extension-based semantics. Soundness and completeness results regarding those semantics are provided. (shrink)

In this paper, we address the problem of truth approximation through theory change, asking whether revising our theories by newly acquired data leads us closer to the truth about a given domain. More particularly, we focus on “nomic conjunctive theories”, i.e., theories expressed as conjunctions of logically independent statements concerning the physical or, more generally, nomic possibilities and impossibilities of the domain under inquiry. We define both a comparative and a quantitative notion of the verisimilitude of such theories, and identify (...) suitable conditions concerning the (partial) correctness of acquired data, under which revising our theories by data leads us closer to “the nomic truth”, construed as the target of scientific inquiry. We conclude by indicating some further developments, generalizations, and open issues arising from our results. (shrink)

Morals from Motives develops a virtue ethics inspired more by Hume and Hutcheson's moral sentimentalism than by recently-influential Aristotelianism. It argues that a reconfigured and expanded "morality of caring" can offer a general account of right and wrong action as well as social justice. Expanding the frontiers of ethics, it goes on to show how a motive-based "pure" virtue theory can also help us to understand the nature of human well-being and practical reason.

Conceptual engineering is commonly characterized as the method for assessing and improving our representational devices. Little has been said, however, on how best to construe these representational devices—in other words, on what conceptual engineering should be all about. This paper tackles this problem with a basic strategy: First, by presenting a taxonomy of the different possible subject matters for conceptual engineering; then, by comparatively assessing them and selecting the most conducive one with a view to making conceptual engineering an actionable (...) method, that is, a method that can be applied effectively and consistently to specific case studies. The outcome is that conceptual engineering should be all about concepts on pain of pragmatic inconsistencies otherwise. (shrink)

ABSTRACT In the 1960s, when Dr. Belding Scribner discovered how to accomplish the process of dialysis in a repeated way, he could not imagine that in solving such a problem others as or more difficult would appear. Given the technological progress and the impossibility of assisting all patients through the most modern methods, the medical doctor often finds himself faced with the moral dilemma of choosing which patient in the waiting list will receive the treatment. This same dilemma is amplified (...) in the case of organ transplants. Professionals, students, professors of the juridical and health fields, and the population in general, were interviewed as a means of documenting the moral concepts and opinions surrounding this problem. In the reality in which we find ourselves, it seems to us that deciding who lives, and the responsibility for all the events that culminate in such decisions, is still a subject left open to discussion. (shrink)

O acontecimento do compreender, enquanto questão-chave do pensamento de Gadamer, também pode ser compreendido como uma fusão de horizontes. Do ponto de vista da hermenêutica filosófica, tal aspecto abre a possibilidade de tematização do âmbito próprio da compreensão como uma experiência filosófica simultaneamente ontológica e prática. Por isso, a descrição do compreender enquanto fusão de horizontes indica o tratamento de traços fundamentais da vida humana que, para Gadamer, encontra afinidades com a retomada da filosofia prática de Aristóteles. Deste modo, pretendemos (...) discutir alguns aspectos da relação entre os conceitos de compreensão e fusão de horizonte a partir da conexão essencial entre hermenêutica filosófica e filosofia prática.: The happening of understanding, as key-issue of Gadamer’s thought, can be also understood like a fusion of horizons. From the point of view of philosophical hermeneutics, this aspect opens the possibility of discussing about the sphere of understanding simultaneously ontological and practice philosophical experience. Therefore, the description of understanding as fusion of horizons indicates the treatment of basic traces of human life that finds affinities with the rehabilitation of practical philosophy of Aristotle. Thus, we intend to discuss some aspects of the relation between the notions of understanding and fusion of horizons from the essential connection between philosophical hermeneutics and practical philosophy. Keywords: Gadamer; understanding; fusion of horizons; practical philosophy; Aristotle. (shrink)

Na abordagem hermenêutica das obras de arte, Gadamer discute a arquitetura como uma das expressões artísticas na qual se pode reconsiderar a relação ontológico-interpretativa com as coisas em geral. Repensando a estrutura representativa própria da experiência hermenêutica das obras de arte, Gadamer introduz a arquitetura como uma expressão artística peculiar, na qual as obras de arte resistem aos posicionamentos estéticos atuais, reinserindo-as na esfera prática da vida. Essa tematização encontra ecos importantes na teoria e prática arquitetônicas, à medida que possibilita (...) uma nova relação com as obras de arquitetura, para além das variáveis estéticas. O presente artigo, portanto, tem como objetivo discutir a experiência hermenêutica da arquitetura como um momento interpretativo decisivo da relação com as obras de arte, explicitando tanto o caráter ontológico-hermenêutico do pensamento de Gadamer quanto o traço hermenêutico das obras de arquitetura. Para isso, partimos de um diálogo estabelecido por Gadamer e dois arquitetos, Jacques Herzog e Pierre de Meuron sobre a essência da arquitetura. A resposta gadameriana indicou-nos o horizonte de tematização das obras arquitetônicas como extensão da experiência da obra de arte, tal como foi discutido em Verdade e Método, notadamente na discussão sobre a representação artística e a retomada das noções de ocasional e decorativo. A tematização hermenêutica encontra, por conseguinte, repercussões na teoria e prática arquitetônicas, indicando um horizonte alternativo de questionamento do sentido da arquitetura e urbanismo, situando-o e remetendo-o para o horizonte da vida em comum. (shrink)

A covid-19 tem gerado grande mobilização por parte das sociedades contemporâneas. Como forma de prevenção e controle da doença, o isolamento social tem sido uma medida eficaz, recomendada por diversos órgãos da saúde. Por isso, pensar o isolamento social como prática solidária tem sido fundamental. Nesta perspectiva, o presente artigo busca problematizar o isolamento social enquanto isolamento solidário. Para isso, partimos da tematização da enfermidade, até agora conhecida, seus modos de prevenção e controle e, por conseguinte, o diálogo entre a (...) Saúde Coletiva e a Hermenêutica Filosófica, na tentativa de repensar o isolamento criticamente, para além de uma questão biomédica. Assim, discutir o isolamento solidário como noção essencial ao enfrentamento da pandemia da COVID-19 significa contribuir para uma visão mais ampla de saúde, ao passo que se encontra em jogo o restabelecimento da vida comunitária para além de sua concepção biomédica. (shrink)

We reported a series of experiments carried out to confront the underlying intuitions of value-based argumentation frameworks (VAFs) with the intuitions of ordinary people. Our goal was twofold. On the one hand, we intended to test VAF as a descriptive theory of human argument evaluations. On the other, we aimed to gain new insights from empirical data that could serve to improve VAF as a normative model. The experiments showed that people’s acceptance of arguments deviates from VAF’s semantics and is (...) rather correlated with the importance given to the promoted values, independently of the perceptions of argument interactions through attacks and defeats. Furthermore, arguments were often perceived as promoting more than one value with different relative strengths. Individuals’ analyses of scenarios were also affected by external factors such as biases and arguments not explicit in the framework. Finally, we confirmed that objective acceptance, that is, the acceptance of arguments under any order of the values, was not a frequent behavior. Instead, participants tended to accept only the arguments that promoted the values they subscribe. (shrink)

In this paper we present an embedding of abstract argumentation systems into the framework of Barwise and Seligmans logic of information flow. We show that, taking P.M. Dungs characterization of argument systems, a local logic over states of a deliberation may be constructed. In this structure, the key feature of non-monotonicity of commonsense reasoning obtains as the transition from one local logic to another, due to a change in certain background conditions. Each of Dungs extensions of argument systems leads to (...) a corresponding ordering of background conditions. The relations among extensions becomes a relation among partial orderings of background conditions. This introduces a conceptual innovation in Barwise and Seligmans representation of commonsense reasoning. (shrink)

In this paper, I argue for a pragmatic theory of the motivations behind the practice of defining concepts in philosophy. The “correct” definition in philosophy is not, as is usually supposed, the definition that accurately describes some pre-philosophical meaning, but the definition which is useful for the achievement of certain theoretical goals. I consider different examples of definitional debates from the history of philosophy. The analysis of these examples also evidences why philosophers do not usually grant the incidence of pragmatic (...) reason in their conceptual investigations. At the end of the paper, I provide some reasons that explain why the incidence of pragmatic reasons is inevitable. (shrink)