Concerns about threats to human autonomy feature prominently in the field of AI ethics. One aspect of this concern relates to the use of AI systems for problematically manipulative influence. In response to this, the European Union’s draft AI Act (AIA) includes a prohibition on AI systems deploying subliminal techniques that alter people’s behavior in ways that are reasonably likely to cause harm (Article 5(1)(a)). Critics have argued that the term ‘subliminal techniques’ is too narrow to capture the target cases (...) of AI-based manipulation. We propose a definition of ‘subliminal techniques’ that (a) is grounded on a plausible interpretation of the legal text; (b) addresses all or most of the underlying ethical concerns motivating the prohibition; (c) is defensible from a scientific and philosophical perspective; and (d) does not over-reach in ways that impose excessive administrative and regulatory burdens. The definition is meant to provide guidance for design teams seeking to pursue responsible and ethically aligned AI innovation. (shrink)

“Trends in Logic XVI: Consistency, Contradiction, Paraconsistency, and Reasoning - 40 years of CLE” is being organized by the Centre for Logic, Epistemology and the History of Science at the State University of Campinas (CLEUnicamp) from September 12th to 15th, 2016, with the auspices of the Brazilian Logic Society, Studia Logica and the Polish Academy of Sciences. The conference is intended to celebrate the 40th anniversary of CLE, and is centered around the areas of logic, epistemology, philosophy and history of (...) science, while bringing together scholars in the fields of philosophy, logic, mathematics, computer science and other disciplines who have contributed significantly to what Studia Logica is today and to what CLE has achieved in its four decades of existence. It intends to celebrate CLE’s strong influence in Brazil and Latin America and the tradition of investigating formal methods inspired by, and devoted to, philosophical views, as well as philosophical problems approached by means of formal methods. The title of the event commemorates one of the three main areas of CLE, what has been called the “Brazilian school of paraconsistency”, combining such a pluralist view about logic and reasoning. (shrink)

La questione sulla verità del cristianesimo è fondamentale e ineludibile. In essa si trova uno dei filoni fondamentali del pensiero di Joseph Ratzinger – Benedetto XVI. In fondo si trovano coinvolti una serie di argomenti che si possono riassumere nel rapporto tra fede e ragione, tra il Dio della fede e il Dio dei filosofi. Nella visione cristiana ambedue non si contrappongono, ma s’incontrano. La “distinzione mosaica” s’incontra con la “distinzione socratica” . La pretesa di verità del cristianesimo conduce a (...) delle conseguenze sia nell’ambito della religione, sia in quello della filosofia e della morale. Per superare la crisi del cristianesimo abbiamo bisogno di recuperare la fiducia nela ragione e tornare alla ricerca della verità. (shrink)

In the whole Corpus Platonicum, we find in principle only one "direct argument" (Charles Kahn) for the existence of the ideas (Tim.51d3-51e6). The purpose of the article is to analyse this argument and to answer the question of why Plato in the Timaeus again defended the existence of the ideas despite the objections in the Parmenides. He defended it again because the latent presupposition of the apories in the Parmenides, the substantial view of sensibles, is removed through the introduction of (...) space as "substantialized extension". First (I) it is shown that Plato remained in dialogues, like the Sophist and Politicus, faithful to the "theory of ideas" despite his criticism in the Parmenides. The common theme in the trilogy of the Theaetetus, Sophist and Politicus is to refute relativism by showing that any relativism presupposes something absolute that is something like the "theory of ideas". The second part of the paper (II) examines closely the logical structure of the argument for the existence of ideas in the Timaeus (51d3-52a7). The third part (III) shows how this argument can avoid the criticism of ideas in the Parmenides. In the Parmenides, sensibles are treated as substantial entities. But, as the Timaeus shows, sensibles are not substantial entities but merely qualities, namely qualities of space, which is the only substance in the sensible world. A shortened English version of the paper appeared in Proceedings of the Fourth Symposium Platonicum, Granada, Selected papers, ed. by T. Calvo/L. Brisson, Academia Verlag, St. Augustin, 1997, 179-186. -/- But the only "direct argument" (Tim.51d3-51e6) seems to be interestingly flawed. Cf. Ferber, Rafael; Hiltbrunner, Thomas, (2005). (shrink)

The paper puts forward that the basic principle of Wittgenstein’s Tractatus (4.0312) transforms the supreme principle of all synthetic judgments a priori in Kant’s Critique of Pure Reason (A158/B197) from a level of reason to the level of language. Both philosophers, Kant and Wittgenstein, put forward a transcendental principle and both hold a formal identity true, Kant an identity between the form of experience and the form of the object of experience, Wittgenstein an identity between the form of a sentence (...) and the form of a fact. (shrink)

In this paper two systems of AGM-like Paraconsistent Belief Revision are overviewed, both defined over Logics of Formal Inconsistency (LFIs) due to the possibility of defining a formal consistency operator within these logics. The AGM° system is strongly based on this operator and internalize the notion of formal consistency in the explicit constructions and postulates. Alternatively, the AGMp system uses the AGM-compliance of LFIs and thus assumes a wider notion of paraconsistency - not necessarily related to the notion of formal (...) consistency. (shrink)

This paper briefly outlines some advancements in paraconsistent logics for modelling knowledge representation and reasoning. Emphasis is given on the so-called Logics of Formal Inconsistency (LFIs), a class of paraconsistent logics that formally internalize the very concept(s) of consistency and inconsistency. A couple of specialized systems based on the LFIs will be reviewed, including belief revision and probabilistic reasoning. Potential applications of those systems in the AI area of KRR are tackled by illustrating some examples that emphasizes the importance of (...) a fine-tuned treatment of consistency in modelling reputation systems, preferences, argumentation, and evidence. (shrink)

This article considers the historical tension in conceptualising Marx's materialism (dialectical and historical) as either a break from, or a fidelity to, Hegelian dialectics, and the methods by which this tension is itself subsumed under an insistence on vindicating the radical irreducibility of Marxist thought. Ultimately, however, it is argued that the question of whether Marx should or should not be framed alongside Hegel is the wrong question. It is not a question of 'Marx by himself' or 'Marx and... [Hegel]', (...) but rather of 'Marx without himself': as with any radical event in the history of ideas, it is a benefit to Marx's innovativeness that he can be retrospectively articulated according to historical traditions whilst simultaneously breaking from them. -/- . (shrink)

The paper proposes (1.) a non-standard interpretation of the proverbial expression “deuteros plous” by giving a fresh look to Phaedo, 99c9-d1. Then (2.) it proceeds to the philosophical problem raised in this passage according to this interpretation, that is, the problem of the “hypothesis” or the “unproved principle”. It indicates finally (3.) the kernel of truth contained in the standard Interpretation and it concludes with some remarks on the “weakness of the logoi”.

A strange dialectical reversal characterizes the oppositions which psychoanalysis posits against philosophy and neuroscience: what psychoanalysis intervenes with as a unique and missing quality of these subjects, reveals itself upon enquiry as already having been a feature of said subjects. This article first discusses the failed intervention of psychoanalysis within the perceived totalities and absolutes of German idealism. Psychoanalysis, founded on an ontological division and internal inconsistency with a retroactive logic, finds this internal contradiction already reflected within the supposed totalities (...) of Schelling and Hegel. Schelling’s “blind act,” a decision with no prior foundation that grounds an abstract identity-in-itself, appears as the counterpart to what Badiou calls the strictly “analytic act.” Hegel’s Science of Logic, in which the inconclusive interpenetration of being and nothing presupposes its own conclusion in the transitions to essence, and in which an internal incompleteness and contradiction are retroactively constitutive of the concept, similarly nullifies the intervention of psychoanalysis. Finally, precisely such a reversal is presented in neuroscience, where the constitutive contradiction of contingently functional neuronal formations in the adaptive “multiple demand” model of executive functioning repeats the contingent and self-contradicting psychoanalytic subject as being its own deference within linguistic, discursive formations. (shrink)

Autonomy has been central to moral and political philosophy for millenia, and has been positioned as a critical aspect of both justice and wellbeing. Research in psychology supports this position, providing empirical evidence that autonomy is critical to motivation, personal growth and psychological wellness. Responsible AI will require an understanding of, and ability to effectively design for, human autonomy (rather than just machine autonomy) if it is to genuinely benefit humanity. Yet the effects on human autonomy of digital experiences are (...) neither straightforward nor consistent, and are complicated by commercial interests and tensions around compulsive overuse. This multi-layered reality requires an analysis that is itself multidimensional and that takes into account human experience at various levels of resolution. We borrow from HCI and psychological research to apply a model (“METUX”) that identifies six distinct spheres of technology experience. We demonstrate the value of the model for understanding human autonomy in a technology ethics context at multiple levels by applying it to the real-world case study of an AI-enhanced video recommender system. In the process we argue for the following three claims: 1) There are autonomy-related consequences to algorithms representing the interests of third parties, and they are not impartial and rational extensions of the self, as is often perceived; 2) Designing for autonomy is an ethical imperative critical to the future design of responsible AI; and 3) Autonomy-support must be analysed from at least six spheres of experience in order to approriately capture contradictory and downstream effects. (shrink)

O presente artigo busca analisar, no aspecto da imagem audiovisual e focando na questão do movimento, a série televisiva de desenho animado Speed Racer ( Mach Go Go Go , 1967-68). Utilizando a teorização de Gilles Deleuze acerca da imagem-movimento e seus aspectos semióticos, o objetivo aqui é ver como um desenho animado, utilizando a chamada animação limitada, consegue representar o movimento automobilístico sem precisar mobilizar inúmeros elementos de animação ou mesmo rotoscopiar imagens de corridas de carros. Por fim, o (...) artigo traz algumas considerações sobre como Speed Racer , utilizando sua abordagem semiótica de movimento, agiu na linguagem do dispositivo do desenho animado, ou seja, nos campos de ação social mimetizados por qualquer realização audiovisual. (shrink)

The article first gives an exegesis of the famous passage in the "Republic", 505d11-506a2. Attention is drawn to the fact that the principle that every soul does everything for the Good can be translated in two ways: Every soul does everything for the sake of the Good, or goes to all lengths for the sake of the Good. Depending on the different translations, we have a different picture of the platonic Socrates in the Republic, an intellectualistic Socrates for whom irrational (...) desires do not exist, or a Socrates who also accepts irrational desires. The article favours the first one. Then it attempts to show that we can elucidate some dark points in the Socratic thesis that the Good is what every soul pursues and for which every soul does everything, with the help of Aquinas’s distinction between it actio hominis and actio humana. Finally, the article outlines three substantive answers to the question “What is the Good?” – the henological, the perfectionist and the structuralist. Instead of advancing a new answer, the article suggests an uncontroversial formal starting point for an answer to this question. (shrink)

Este artigo investiga alguns usos da metáfora da linguagem como cálculo em Wittgenstein. A metáfora do cálculo emerge, nos anos 30, numa interlocução com o referencialista, e é ali instrumental na recondução do olhar filosófico para os usos efetivos do simbolismo linguístico. Contudo, foi levada longe demais, ao sugerir uma imagem da linguagem composta apenas de inferências à maneira dos sistemas de regras fechados. Isto embargaria certa expansão pragmática do contexto criterial da análise conceitual. Mas a aplicabilidade do símile do (...) cálculo não é invalidada. A metáfora será reativada em manuscritos posteriores, sempre e quando puder servir aos mesmos propósitos do período intermediário, à medida que o ambiente dialógico convoque novas vozes dogmaticamente referencialistas. Ainda assim, é nos manuscritos intermediários que melhor se esclarece o seu funcionamento. Tal movimento exemplifica, por fim, um método filosófico que não procede por meio da superação de problemas à maneira científica. (shrink)

This paper aims to evidence the meaning of “ontology of present”, a concept elaborated by Michel Foucault, and intends to elucidate the philosopher’s idea that subjectivity is historically formed. The context of the concept’s emergence will be analyzed, considering Foucault’s studies on the ancient greco-roman moral, in which he discuss the role of liberty and autonomy in the development of citizens. To the philosopher, the ontology of present consists in a critic of the domination and subjugation mechanisms, produced by disciplinary (...) and control societies. With this critic, Foucault pictures theoric tools to analyze the actuality, making possible to transform the historical processes of subjectification. Keywords: ontology of the present; subjectivity; history; Michel Foucault; actuality. (shrink)

O presente artigo busca caracterizar a querela interna do Movimento Jovem-Hegeliano através da descrição e caracterização do conceito de massa/massificação dentro do pensamento de seus membros primeiros, a saber: Ludwig Feuerbach, David Strauss e Bruno Bauer.

"Paraconsistent Belief Revision Based on a Formal Consistency Operator" delves into Belief Revision—a significant area of research in Formal Philosophy that uses logic to model the ways in which human and artificial agents modify their beliefs in response to new information and examines how these changes can be considered rational. -/- Originally authored as a PhD thesis (previously published in Portuguese), this work provides a novel epistemic interpretation of Paraconsistency through Paraconsistent Belief Revision systems. It explores the concept of paraconsistency (...) from the standpoint of epistemic attitudes of acceptance and rejection. -/- This work challenges the traditional notion that accepting a new belief requires retracting its negation from the current epistemic state. The author contends that such reflexive retraction goes against the principle of informational economy, which is a crucial aspect of rationality in the context of belief change. Consequently, the phenomenon of paraconsistency is further examined from this fresh perspective of belief change, shedding light on the complexities of the Logics of Formal Inconsistency (LFIs). These LFIs provide the foundational logic, offering a comprehensive framework for understanding and implementing paraconsistent principles within belief revision systems. -/- This thesis was supervised by Marcelo Esteban Coniglio and co-supervised by Márcio Moretto Ribeiro, as part of Rafael Rodrigues Testa's doctoral studies at the University of Campinas (Unicamp), Brazil. (shrink)

Neutral monism claims that both mind and matter are categories derived froma single underlying realit y that is univocally identified with none of them. In this paper atheoretical outline is presented from the neutral-monism perspective on the different configurations of reality referred to as “mind” and “matter”, while also discussing its consequences and the approaches it could give raise.

Dentro da produção da UPA, estúdio que buscou rivalizar esteticamente com os preceitos da Disney no cinema de animação nos anos 1950, Gerald McBoing-Boing é a personagem mais emblemática, estrelando quatro curtas de animação que representam os preceitos do estúdio. No entanto, o mote narrativo de McBoing-Boing é que ele não se comunica com sons, mas sim por efeitos sonoros, e se fazendo entender. Para entender quais são as possibilidades linguísticas desse uso sonoro e como ele não nos aparece enquanto (...) algo surreal, analisaremos tal representação à luz da segunda filosofia de Ludwig Wittgenstein, cuja obra-chave são as Investigações Filosóficas. Concentrando no §528, o objetivo é mostrar como McBoing-Boing se encaixa em um fenômeno language-like, representando um ponto central na crítica estética da UPA. (shrink)

No audiovisual, a violência normalmente é vista como apenas uma ação, um sensacionalismo, especialmente as cenas de luta. No entanto, além do mero grau percebido, o anime é um gênero fílmico onde tais cenas apresentam um grau concebido,uma outra ressignificação de tais atitudes. Assim, o presente artigo busca analisar tal situação, dentro do domínio das Ciências da Linguagem, no anime Cavaleiros do Zodíaco. O objetivo aqui é descrever tais efeitos de sentido provenientes das cenas de lutas e como eles operam (...) não só na construção poética, mas também no reforço da lógica do fantasma, o mecanismo de interação psíquica da obra audiovisual. (shrink)

The debate over Plato’s “ so called unwritten doctrines”, which he communicated only to a small circle of trusted disciples, has caused a stir among philosophers in recent decades. Rafael Ferber assumes a differentiated position in this controversy. He is convinced that the unwritten doctrines did exist, but that Plato, for reasons inherent in the process of gaining knowledge, was unable to communicate these doctrines even to his closest disciples. In this book, Ferber outlines the discussion and summarizes the (...) standpoints of greatest interest. Ever since Aristotle, we have known that Plato did not put his most important teachings into writing, but instead communicated them only orally to the inner circle of his disciples. While the extant dialogues merely pass down Plato’s “exoteric” doctrines, his most important “esoteric” insights were not meant for the general public. In the meantime, the contents and the significance of Plato’s “unwritten doctrines” have become the subject of debate in philosophical circles. Fifteen years ago, at the height of the controversy over the “unwritten doctrines”, Rafael Ferber entered the fray with a small book. He proposed that Plato was also unable to communicate the “unwritten doctrines” because the highest principles (i.e. the subject of the unwritten doctrines) cannot be known through logical operations due to an epistemological paradox. Ferber’s differentiated position met with great respect and acceptance, although in individual cases it was also rejected. Ferber’s new book again presents the text of 1991, but significantly expands on it through new perspectives and an outline of the discussion it triggered. In this book, the reader learns what is meant by Plato’s unwritten doctrines and what the controversy is all about. (shrink)

This article wants to analyze how Man Rayin his photographs, engages a poetry of silenceusing this medium as a poetic communication technology. To understand the functioning of this poetic language, we will adopt the Groupe μ analysis method (both the General Rhetoricand the Treatise on the Visual Sign). Whereas the language is manifold as the forms of representation, and it present in all media, whatever the lack of speech -silence -would find its richest form in both directions through the metaphors (...) and metonymy engaged in metasememes of the photos studied. (shrink)

O presente artigo busca debater a posição de Charles Sanders Peirce e dos primeiros estudantes peirceanos de Lógica (Christine Ladd e O. H. Mitchell nos Studies in Logic, 1883) dentro do debate inspirador da visão da linguagem dentro da Filosofia Analítica, conhecido como “Lingua Universalis contra Calculus Ratiocinator”, cujos primórdios podem ser traçados desde a filosofia de Gottfried Leibniz. Para isso, comparamos esse campo do pensamento peirceano com o debate crucial entre a conceitografia de Gottlob Frege (Begriffsschrift, 1879) e a (...) lógica algébrica de George Boole (An investigation of the Laws of Thought on which are founded the mathematical theories of Logic and Probabilities, 1854). O nosso objetivo principal é observar que esse momento da filosofia peirceana pode ser comparado com o pensamento wittgensteiniano, especialmente em sua nova vertente, chamada New Wittgenstein, que tenta superar a tradicional divisão entre Tractatus Logico-Philosophicus e Investigações Filosóficas. Pela comparação entre pensadores influenciados por C. S. Peirce e a filosofia de Ludwig Wittgenstein, pretendemos abrir caminhos na compreensão do conceito de jogo de linguagem, especialmente em sua gramática e em seus operadores simbólicos, através da observação das funções de verdade [truth functions] e as tabelas de verdade [truth tables] enquanto lógica algébrica. (shrink)

This paper deals with the deuteros plous, literally ‘the second voyage’, proverbially ‘the next best way’, discussed in Plato’s Phaedo, the key passage being Phd. 99e4-100a3. I argue that (a) the ‘flight into the logoi’ can have two different interpretations, a standard one and a non-standard one. The issue is whether at 99e-100a Socrates means that both the student of erga and the student of logoi consider images (‘the standard interpretation’), or the student of logoi does not consider images but (...) that “consistency should suffice for truth” (‘the non-standard interpretation’); (b) the non-standard one implies the problem of the hypothesis, a problem analogous to the problem of the elenchus; (c) there is a structural analogy between Descartes’ ontological argument for the existence of God in his 5th Meditation and the final proof for the immortality of the soul in the Phaedo. (shrink)

La finalidad del presente artículo es descubrir la presencia del concepto de persona en la doctrina de la soberanía de Carl Schmitt. A pesar de que este concepto tuvo un amplio desarrollo metafísico en el seno del pensamiento cristiano durante la antigüedad tardía, jamás pudo desembarazarse de la impronta jurídica de sus creadores los juristas romanos. Por tal razón, sirvió como soporte conceptual para el posterior despliegue de la noción de persona jurídica, sistematizada a lo largo de la modernidad. Para (...) lograr nuestro objetivo, intentaremos rastrear la transformación del concepto de persona a lo largo de la edad media y la modernidad, así como revisar el concepto de soberanía en la teoría política moderna. Por otro lado, estudiaremos la noción de decisión en la obra de Carl Schmitt, noción que el gran jurista alemán utilizó para definir su propia concepción de la soberanía. A partir de estas precisiones, intentaremos establecer la relación existente entre la noción de persona y la de decisión en el seno de la concepción schmittiana de la soberanía tomando como hilo conductor los presupuestos teológicos implícitos en ella. Como veremos, tales presupuestos nos remitirán a la obra del pensador danés Søren Kierkegaard, cuyas doctrinas nos mostrarán todo el alcance del planteamiento schmittiano. De esta manera, podemos concluir que el concepto de persona subyacente al decisionismo schmittiano ha sido transformado, en primer término, en el de existencia política, noción determinada por la relación de enemistad; y, en segundo lugar, en el de unidad de la personalidad, concepto determinado por la actualización de la dimensión espiritual al interior de la condición humana. (shrink)

This paper intends to show that Friedrich Nietzsche’s approach to morality or ‘immorality’ involves an attempt to see moral beliefs as a product of human psychology, rather than as a set of metaphysical ‘truths’ that are somehow given to, or discoverable by, us. Nietzsche wants to replace the metaphysical (or supernatural) account of morality with a natural one, and his treatment of moral belief-systems, from the perspective of this concern, can be divided into (a) a psychological analysis of the true (...) nature of moral action and agency, and (b) an historical/genealogical tracing of the real origins of moral values. In this paper I am going to focus on the second dimension of Nietzsche’s analysis through references from his polemical texts Beyond Good and Evil, Genealogy of Morals, Gay Science, and Will to Power. I will outline Nietzsche’s historical leitmotif on the morality of ressentiment or slave morality and will show how it figures as a point of departure for his revolutionary transvaluation of values, one that places a new order of morality which is disparagingly called ‘immoralism.’ Next, I will discuss Nietzsche’s treatment of bad conscience and posit that it involves two different stages: one is the present stage of the bad conscience as a feeling of guilt, and the other is an earlier stage. I shall argue that in order for this earlier stage to develop into the level of guilt, he needs another element, namely an indebtedness towards gods, which finds its most striking culmination in the Christian heritage of religious dogmatism. Finally, I will discuss how for Nietzsche Christianity as an ascetic ideal has promoted to preserve a declining life, i.e. a slave morality, for all of humanity. (shrink)

This article asks the question “Why did Plato not write the ‘unwritten doctrine’?” and answers it by citing a combination of two obstacles. The first derives from the limitations of the episteme available to an embodied soul about the essence of the good. Even if the dialectician has access to some kind of knowledge, the mismatch between the unchanging essence of the good and the precarious logoi which aim to identify it (and allow others some measure of access to it) (...) can never fully be overcome. At best, Socrates (or Plato) can lead souls to an incomplete account of it: It is possible that even the most expert dialectician can only have a claim to knowledge, but no absolute certainty. Another obstacle lies in the audience or readership itself: No shortcut to understanding is possible, and yet a mere written presentation, which is all they have, is just such a shortcut, and so represents an empty promise. In memory of Charles H. Kahn (1928–2023), a letter of his from September 5, 1989, concerning the question “Why did Plato not write the ‘unwritten doctrine’?” is published, along with some comments. (shrink)

Despite the fact that Aristotle and Frege/Russell differ in how to understand the ambiguity in the meaning of the word “is”, their theories share a common feature: “is” does not have a normative meaning. This paper, however, (I) shows (a) that there is a normative meaning of “is” (and correspondingly a constative meaning of the word “ought”) and (b) that the ambiguity of “is” is itself ambiguous. Furthermore, it proposes (c) a performative criterion for making a distinction between constative and (...) normative “is”. Thereby, (II) a new interpretation of Kant’s critique of the ontological argument (CPR A 598/B626) makes sense: The difference between being as a real predicate and being as a position depends on the difference between “is” as a descriptive and “is” as a normative predicate. (III) The criterion also makes possible a new answer to Leibniz’s and Schelling’s question, “Why is there something rather than nothing?”: The “is” in “there is something” is normative and the question means “Why shall there be something rather than nothing?”. As “there shall be nothing” is self-refuting, the question evokes an ultimate foundation in a practical sense. (shrink)

The article treats again the question of whether «the Idea of the Good is a Reality in the Universe, or beyond it. Is it immanent or transcendent ?» (Rufus Jones, 1863 1948). Plato scholars such as Matthias Baltes (1940 2003) and Luc Brisson have defended the thesis that Plato’s Idea of the Good is, on the one hand, beyond being (epekeina tês ousias) in dignity and power, but on the other, is nevertheless not transcendent over being. The article delivers first (...) (I.) the most important arguments for the thesis of Baltes and Brisson. Then (II.), it gives two counterarguments against the thesis. Third (III.), it concludes with some general questions concerning the deflationist interpretation of Plato’s Republic 509b9 10 and defends again the transcendence of the Idea of the Good. (shrink)

Two systems of belief change based on paraconsistent logics are introduced in this article by means of AGM-like postulates. The first one, AGMp, is defined over any paraconsistent logic which extends classical logic such that the law of excluded middle holds w.r.t. the paraconsistent negation. The second one, AGMo , is specifically designed for paraconsistent logics known as Logics of Formal Inconsistency (LFIs), which have a formal consistency operator that allows to recover all the classical inferences. Besides the three usual (...) operations over belief sets, namely expansion, contraction and revision (which is obtained from contraction by the Levi identity), the underlying paraconsistent logic allows us to define additional operations involving (non-explosive) contradictions. Thus, it is defined external revision (which is obtained from contraction by the reverse Levi identity), consolidation and semi-revision, all of them over belief sets. It is worth noting that the latter operations, introduced by S. Hansson, involve the temporary acceptance of contradictory beliefs, and so they were originally defined only for belief bases. Unlike to previous proposals in the literature, only defined for specific paraconsistent logics, the present approach can be applied to a general class of paraconsistent logics which are supraclassical, thus preserving the spirit of AGM. Moreover, representation theorems w.r.t. constructions based on selection functions are obtained for all the operations. (shrink)

One core question in contemporary political economy is whether economic liberties should be constitutionally protected as basic rights. In this article I do not provide a positive argument for the view that economic liberties are basic rights. Rather, I seek to provide a reason for not embracing the opposing view, i.e. that economic liberties should not be constitutionally protected as basic rights. Based on Hayek’s theory of price as signal, I argue that price control, a view usually associated with high (...) liberals, and sometimes endorsed by moderate welfarists, is environmentally sub-optimal. (shrink)

Na era das tecnologias digitais, entender vieses algorítmicos por meio das teorias da verdade ajuda a fazer perguntas cujas respostas facilitam a filtragem da informação de forma mais eficaz. O ganho é a compreensão aprofundada da realidade.

Despite the fact that Aristotle and Frege/Russell differ in how to understand the ambiguity in the meaning of the word "is", their theories share a common feature: "is" does not have a normative meaning, but a constative meaning. This paper, however, shows (1) that there is a normative meaning of "is" (and correspondingly a constative meaning of the word "ought") and (2) that the ambiguity of "is" is itself ambiguous. Furthermore, the paper proposes (3) a performative criterion for making a (...) distinction between constative and normative "is". Thereby, it is possible to attack Searle's famous argument against Hume's law. (shrink)

Under semantic monism I understand the thesis “The Good is said in one way” and under semantic pluralism the antithesis “The Good is said in many ways”. Plato’s Socrates seems to defend a “semantic monism”. As only one sun exists, so the “Good” has for Socrates and Plato only one reference. Nevertheless, Socrates defends in the Philebus a semantic pluralism, more exactly trialism, of “beauty, symmetry and truth” . Therefore, metaphorically speaking, there seem to exist not only one sun, but (...) three suns. If the platonic Socrates defends a semantic monism on the one hand and pluralism on the other, how can we unite his pluralism with his monism? My thesis is that the three references are “qualities” of the one single reference, or again, speaking metaphorically, “side suns” of the single sun. In the following, I propose first an exegesis of Plato’s last written word on the Good in Phil. 65 A 1-5 by dividing it into five sentences. Second, I ask a philosophical question on this monism and the corresponding hierarchy of values. (shrink)

Neste artigo fazemos uma discussão conceitual acerca da ferramenta de escolha por nós apresentada no trabalho “Solving Normative Conflicts using Preference Relations”, isto é, explicitamos a racionalidade subjacente a tal ferramenta, bem como as consequências práticas de sua aceitação.

This is a report on the II Symposium Platonicum, which took place in Perugia, Italy, September 1-6, 1989, and on the founding of the International Plato Society, which took place in Bevagna, Province of Perugia, Umbria, Italy, September 3, 1989.

The first chapter, "Der Hintergrund von Gadamers 'Phänomenologischen Interpretationen' in Sein und Zeit" traces the origins of Gadamer’s interpretation of the Philebus in Sein und Zeit. Especially important is that Dasein is, thanks to speech , already outside of itself in the world. The second chapter "Gadamers Dialektische Ethik" gives a short summary of the main points of Gadamer's interpretation of the Philebus. The third chapter "Davidsons reinterpretation of von Gadamer's Dialektischer Ethik" 222-231), points especially to the fact that Davidson (...) sees the "Socrates post Vlastos" in the interpretation of Gadamer at work: Because every man is already in possession of some basic truths, coherence is enough to lead to substantive truths. Davidson concludes that only in “interpersonal communication” "can be thought, a grasping of the fact of an objective, that is, a shared world". Thus, Davidson sees in Gadamer's interpretation of the Philebus his own theory of triangulation anticipated. (shrink)

O presente artigo apresenta um retrospecto teórico das temáticas da Cultura e Identidade – essa tomada também como identificação e individualização – dentro das principais obras de Herbert Marcuse, em especial Razão e Revolução e A Ideologia da Sociedade Industrial. Após traçar esse arcabouço, pretendemos ilustrar os conceitos filosóficos utilizando exemplos midiáticos presentes nas práticas midiáticas atuais, buscando demonstrar a pregnância que um pensamento da época da contracultura pode ter no século XXI.

Esse artigo pode ser dividido em duas partes. A primeira consiste na reconstrução do importante caminho heideggeriano em Ser e Tempo que vai do impessoal (das Man) à cura (Sorge) através de um ponto em comum: o entretenimento. A segunda consiste em apontar brevemente a possibilidade ou não do uso do caminho descrito pela primeira parte e do pensamento de Martin Heidegger nos estudos midiáticos, onde o entretenimento está inserido. Essa construção dupla proporciona não apenas um estudo undimensional seja do (...) pensamento heideggeriano ou da questão do entretenimento. O objetivo é iluminar tanto o percurso da busca do ser através do “entreter” quanto perceber a possibilidade de um estudo direto da mídia através dos conceitos presentes em Heidegger que, de certa forma, influenciou pensadores de grande uso atual nas pesquisas midiáticas como Michel Foucault e Jacques Lacan. (shrink)

This article explores Axel Honneth’s attempts to reconnect the struggles of workers with the normative content of modernity through Hegel’s intersubjective account of recognition. The importance of Honneth’s writings lies in his attempt to extend Habermas’ account of normative self-constitution to labor via the morally motivated struggles of workers to correct the modern maldistribution of social worth. To this extent, the expansion of ethical life is predicated on the struggles of excluded participants to gain inclusion within the normative content of (...) modernity. From this perspective Habermas’ attempt to legitimate the exclusion of labor (by the system) from the normative content of modernity appears unjust and unjustified. Unfortunately, Honneth shares with Habermas a tendency to locate the economic system beyond the (culturally defined) limits of ethical life. He thereby fails to acknowledge the extent to which workers play a major role in re-moralizing the former via the de-reification of the latter. (shrink)

*Winner of the American Philosophical Association's 2020 Essay Prize in Latin American Thought* This essay offers a novel account of the secularity of Latin American liberation philosophy. It challenges the accepted notion that liberation philosophy applies the methods and approaches of Latin American liberation theology to the philosophical arena, thus putting liberation theology on secular grounds. While this formulation is true insofar as liberation philosophy is not bound by the hermeneutics of any particular religious tradition, this formulation could be misconstrued (...) given that liberation philosophy does not premise such secularization in an undialectical understanding of secularity as secularism that disavows religion. Rather, liberation philosophy’s secularity is dialectical in that it requires constant engagement with re-ligion, not in the hermeneutics of any specific tradition but with “the traditional question of the Absolute.” Due to this often-misunderstood element of liberation philosophy, it has frequently been “ghettoized and relegated to the ‘safe’ area of theological studies,” as Eduardo Mendieta argues. However, I contend that liberation philosophy’s secular grounds offer an original contribution to philosophy as a decolonial and postsecularist liberation philosophy, one that conceives of secularism as an aspect of coloniality to be overcome, an obstacle rather than a benefit for Latin American philosophers seeking to gain a better understanding of our historical conditions. (shrink)

Das Coisas que nos fazem pensar: O debate sobre a Nova Teoria da Comunicação é o livro que descreve os primeiros momentos de debate e divulgação, por Ciro Marcondes Filho, da Nova Teoria da Comunicação e do metáporo. O objetivo da presente resenha é demonstrar como o livro se caracteriza enquanto um percurso feito pelo autor de disseminação e defesa de sua construção ontológica, epistemológica e metodológica da Comunicação em sua busca para transformá-la de ciência aplicada para ciência pura.

Plato’s “Apology of Socrates” is a masterpiece of the philosophical literature. The question remains as to how much it has been influenced by earlier works, e.g. of Gorgias of Leontinoi and Euripides. Nevertheless, comparative studies on Hippolytus’ defense in Euripides’ tragedy of the same name, on Gorgias’ “Defense of Palamedes” and on Plato’s “Apology” do not exist. The short paper gives an introduction into the status quaestionis.

The paper deals with the beginning and the main properties of the science of nature (he peri physeos historiê). According to Themistius (DK 12 A 7), the founder of this kind of Ionic philosophy is Anaximander of Miletus because he was the first who wrote about nature (especially a cosmography and a cosmogony) and developed three main principles of nature: 1. Nature has a mathematical structure (Arist. De coelo I3 295b10-14.32); 2. nature has a physical structure (DK 12 A 10-11); (...) and 3. nature follows natural laws (DK 12 A 9). The origin of this introduction lies in the prolongation of primitive expectations of constancy. It is especially argued that the shift from mythos to logos is characterized by the depersonalization of nature and the introduction of theoretical terms. In fact, the "apeiron" of Anaximander seems to be something similar to a theoretical term, because Anaximander seems to have realized that the explanans of nature cannot be one of its explananda like water (Thales) or air (Anaximenes). (shrink)

O propósito deste trabalho é analisar a estrutura e discutir a aplicação da(s) lógica(s) deôntica(s) na representação de normas jurídicas. Após uma apresentação desta(s) lógic(s) e, em particular, do sistema de von Wright e da SDL (Standard Deontic Logic), veremos as dificuldades de se aplicar uma lógica à análise do direito positivo: as regras da lógica devem permitir realizar sobre as normas formalizadas somente os tipos de inferência e operaçôes lógicas intuitivamente feitas pelos juristas, ou seja, a reconstrução lógica do (...) direito positivo não se trata de uma tarefa de criação do direito, mas uma tarefa de representação daquilo que o conceito de direito usual reconhece como tal. Para ilustrar estas dificuldades, abordaremos as propostas de Carlos Alchourrón em artigo de 1975, “Condicionalidad y la representación de las normas jurídicas”. (shrink)

The article examines the Socratic principle that (1) virtue is knowledge and its corollary that (2) nobody errs voluntarily (nemo sua sponte peccat). It tries to show (I) that both principles are paradoxa, i.e. from a phenomenological point of view, they seem to be false; (II) that nevertheless the platonic Socrates accepts both principles as true; and finally (III) that these principles are analytical truths a priori which can only be understood if a person (soul) finds them in him- or (...) herself. (shrink)

A Revisão de Crenças estuda como agentes racionais mudam suas crenças ao receberem novas informações. O sistema AGM, trabalho mais influente desta área apresentado por Alchourrón, Gärdenfos e Makinson, postula critérios de racionalidade para os diferentes tipos de mudança de crenças e oferece construções explícitas para tais - a equivalência entre os postulados e operações é chamado de teroema da representação. Trabalhos recentes mostram como o paradigma AGM pode ser compatível com diferentes lógicas não-clássicas, o que é chamado de AGM-compatibilidade (...) - este é o caso da família de lógicas paraconsistentes que analisamos, as Lógicas da Inconsistência Formal (LFIs, da sigla em inglês). A despeito da AGM-compatibilidade, ao se partir de uma nova lógica sua racionalidade subjacente deve ser entendida e sua linguagem deve ser efetivamente usada. Propomos assim novas construções que de fato capturam a intuição presente na LFIs - é o que chamamos de sistema AGMo. Com isso, possibilitamos a estas lógicas uma nova interpretação, na esteira da epistemologia formal. Em uma abordagem alternativa, ao se partir da AGM-compatibilidade os resultados AGM podem ser diretamente aplicados às LFIs - o que chamamos de sistema AGMp. Em ambas abordagens, provamos os respectivos teoremas da representação sempre que necessário. (shrink)

In the Appendix I of his "Remarks on the Foundations of Mathematics", Wittgenstein elaborates a different interpretation of Gödel’s First Incompleteness Theorem, which we have come to refer to as "Gödel’s Theorem" or "Incompleteness Theorem". This nomenclature arises from the recognition that the so-called "Second Incompleteness Theorem" is essentially a corollary of the primary theorem. Wittgenstein aims to reassess Gödel’s conclusion that there exist true formulas not demonstrable within formal systems capable of representing a sufficient amount of arithmetic theory. Gödel’s (...) initial reaction, as well as other commentators, was that Wittgenstein had not understood the proof. Nevertheless, recent commentators view worthy commentaries in wittgensteinian writings: some commentators, such as Juliet Floyd and Hilary Putnam, distinguish between mathematical proof and philosophical prose that surrounds the theorem, making it possible to understand Wittgenstein’s remarks. Ultimately, Wittgenstein’s observations serve as a lens through which Gödel’s theorem can be reconsidered within the realm of non-classical logics, such as paraconsistent logic. (shrink)

This text and the seminar referred to, intend to open a window to observe observation, with a double purpose: firstly, to contribute to inquire the naïve concept and practice of observation which disregard its internal complexity; and secondly, identify and put under examination the assumptions ..