Across several texts, Epicurus memorably and accessibly summarizes his doctrines. This study systematically analyzes Epicurus’ acts of summary, thereby closing a long-standing scholarly lacuna. To this end, a review of existing research is followed by an analysis of the terminology used in antiquity to designate philosophical and scientific compendia. The Epicurean sources are then surveyed chronologically. In two further chapters, Epicurean compendia are discussed in the broader context of ancient philosophical summaries. Their patterns of genre are illuminated not only on (...) the basis of Epicurus’ own remarks but through related texts, in which authors explain the principles undergirding their own ‘poetics of abridgement’. The concluding chapter advances an updated summary of Epicurus’ fragmentary "On Nature", interpreting his compendia not merely as sources for reconstructing the main treatise, but as texts with literary value in their own right. This monograph therefore provides the first complete presentation of Epicurean philosophical compendia, arguing for an interpretation of the rhetoric of philosophical texts while also being informed by metaliterary details afforded by other ancient sources. (shrink)

This paper outlines an account of conditionals, the evidential account, which rests on the idea that a conditional is true just in case its antecedent supports its consequent. As we will show, the evidential account exhibits some distinctive logical features that deserve careful consideration. On the one hand, it departs from the material reading of ‘if then’ exactly in the way we would like it to depart from that reading. On the other, it significantly differs from the non-material accounts which (...) hinge on the Ramsey Test, advocated by Adams, Stalnaker, Lewis, and others. (shrink)

El objetivo de este trabajo es explicar la conexión entre trabajo y ciudadanía en la filosofía política de Fichte. El trabajo comienza con un examen de las nociones de cultura humana y revolución política. Luego el derecho a vivir del propio trabajo es presentado en el marco de la teoría fichteana del contrato social. Por último, las regulaciones estatales del trabajo humano se muestran como condiciones de la ciudadanía.

This paper develops a probabilistic analysis of conditionals which hinges on a quantitative measure of evidential support. In order to spell out the interpreta- tion of ‘if’ suggested, we will compare it with two more familiar interpretations, the suppositional interpretation and the strict interpretation, within a formal framework which rests on fairly uncontroversial assumptions. As it will emerge, each of the three interpretations considered exhibits specific logical features that deserve separate consideration.

The paper lists several editions of Euclid’s Elements in the Early Modern Age, giving for each of them the axioms and postulates employed to ground elementary mathematics.

This paper investigates the logic of reasons. Its aim is to provide an analysis of the sentences of the form ‘p is a reason for q’ that yields a coherent account of their logical properties. The idea that we will develop is that ‘p is a reason for q’ is acceptable just in case a suitably defined relation of incompatibility obtains between p and ¬q. As we will suggest, a theory of reasons based on this idea can solve three challenging (...) puzzles that concern, respectively, contraposing reasons, conflicting reasons, and supererogatory reasons, and opens a new perspective on some classical issues concerning non-deductive inferences. (shrink)

Epistemologists and philosophers of science have often attempted to express formally the impact of a piece of evidence on the credibility of a hypothesis. In this paper we will focus on the Bayesian approach to evidential support. We will propose a new formal treatment of the notion of degree of confirmation and we will argue that it overcomes some limitations of the currently available approaches on two grounds: (i) a theoretical analysis of the confirmation relation seen as an extension of (...) logical deduction and (ii) an empirical comparison of competing measures in an experimental inquiry concerning inductive reasoning in a probabilistic setting. (shrink)

This paper outlines an account of concessive conditionals that rests on two main ideas. One is that the logical form of a sentence as used in a given context is determined by the content expressed by the sentence in that context. The other is that a coherent distinction can be drawn between a reading of ‘if’ according to which a conditional is true when its consequent holds on the supposition that its antecedent holds, and a stronger reading according to which (...) a conditional is true when its antecedent supports its consequent. As we will suggest, the logical form of concessive conditionals can be elucidated by relying on this distinction. (shrink)

Searching for information is critical in many situations. In medicine, for instance, careful choice of a diagnostic test can help narrow down the range of plausible diseases that the patient might have. In a probabilistic framework, test selection is often modeled by assuming that people's goal is to reduce uncertainty about possible states of the world. In cognitive science, psychology, and medical decision making, Shannon entropy is the most prominent and most widely used model to formalize probabilistic uncertainty and the (...) reduction thereof. However, a variety of alternative entropy metrics (Hartley, Quadratic, Tsallis, Rényi, and more) are popular in the social and the natural sciences, computer science, and philosophy of science. Particular entropy measures have been predominant in particular research areas, and it is often an open issue whether these divergences emerge from different theoretical and practical goals or are merely due to historical accident. Cutting across disciplinary boundaries, we show that several entropy and entropy reduction measures arise as special cases in a unified formalism, the Sharma–Mittal framework. Using mathematical results, computer simulations, and analyses of published behavioral data, we discuss four key questions: How do various entropy models relate to each other? What insights can be obtained by considering diverse entropy models within a unified framework? What is the psychological plausibility of different entropy models? What new questions and insights for research on human information acquisition follow? Our work provides several new pathways for theoretical and empirical research, reconciling apparently conflicting approaches and empirical findings within a comprehensive and unified information-theoretic formalism. (shrink)

The conjunction fallacy has been a key topic in debates on the rationality of human reasoning and its limitations. Despite extensive inquiry, however, the attempt to provide a satisfactory account of the phenomenon has proved challenging. Here we elaborate the suggestion (first discussed by Sides, Osherson, Bonini, & Viale, 2002) that in standard conjunction problems the fallacious probability judgements observed experimentally are typically guided by sound assessments of _confirmation_ relations, meant in terms of contemporary Bayesian confirmation theory. Our main formal (...) result is a confirmation-theoretic account of the conjunction fallacy, which is proven _robust_ (i.e., not depending on various alternative ways of measuring degrees of confirmation). The proposed analysis is shown distinct from contentions that the conjunction effect is in fact not a fallacy, and is compared with major competing explanations of the phenomenon, including earlier references to a confirmation-theoretic account. (shrink)

To believe that every single scientist ought to be individually engaged in ethical thinking in order for science to be responsible at a collective level may be too demanding, if not plainly unrealistic. In fact, ethical labor is typically distributed across different kinds of scientists within the scientific community. Based on the empirical data collected within the Horizon 2020 ‘RRI-Practice’ project, we propose a classification of the members of the scientific community depending on their engagement in this collective activity. Our (...) classification offers, on the one hand, a model of how the ethical aspects of science are taken into consideration by scientists and, on the other, some indications on how to institutionalize ethics in science. (shrink)

We discuss the probabilistic analysis of explanatory power and prove a representation theorem for posterior ratio measures recently advocated by Schupbach and Sprenger. We then prove a representation theorem for an alternative class of measures that rely on the notion of relative probability distance. We end up endorsing the latter, as relative distance measures share the properties of posterior ratio measures that are genuinely appealing, while overcoming a feature that we consider undesirable. They also yield a telling result concerning formal (...) accounts of explanatory power versus inductive confirmation, thereby bridging our discussion to a so-called no-miracle argument. (shrink)

During the first phase of the COVID-19 outbreak, Italy experienced problems of public order and maladjusted behavior. This study assessed the role of negative affectivity, right-wing authoritarianism, and anxiety of COVID-19 infection in explaining a variety of the maladjusted behaviors observed with an Italian sample. Specifically, we examined the effect of Negative Affectivity and Right-Wing Authoritarianism on maladjusted behaviors, and the moderating role of anxiety of infection. Seven hundred and fifty-seven Italian participants completed an online survey between March 3rd to (...) the 7th 2020, which was immediately before the lockdown. A moderated-mediation model was tested using a structural equation modeling approach. Results indicated that both Negative Affectivity and Right-Wing Authoritarianism were positively associated with COVID-19-related maladjusted behavior, and that Right-Wing Authoritarianism mediated the relationship between Negative Affectivity and maladjusted behavior. Furthermore, the effect of Right-Wing Authoritarianism on maladjusted behavior was greater for those with high anxiety of infection, and the indirect effect of Negative Affectivity on maladjusted behavior through Right-Wing Authoritarianism was moderated by infection anxiety. Findings highlight potential psychological paths that may inform communication strategies and public health initiatives aimed at promoting healthy behavior during an outbreak. (shrink)

Probability ratio and likelihood ratio measures of inductive support and related notions have appeared as theoretical tools for probabilistic approaches in the philosophy of science, the psychology of reasoning, and artificial intelligence. In an effort of conceptual clarification, several authors have pursued axiomatic foundations for these two families of measures. Such results have been criticized, however, as relying on unduly demanding or poorly motivated mathematical assumptions. We provide two novel theorems showing that probability ratio and likelihood ratio measures can be (...) axiomatized in a way that overcomes these difficulties. (shrink)

Some scholars have understood Karl-Otto Apel's Transcendental Pragmatics as a linguistic and pragmatic transformation of Johann G. Fichte's philosophy. The aim of this paper is to show that this interpretation confuses subjective intention with transcendental knowledge. The paper begins with a reconstruction of some aspects of this interpretation. Next, an argument against the Transcendental Pragmatics based on this interpretation is examined. The conclusion is that the difference between subjective intention and transcendental knowledge can be explained with the help of a (...) strict reflection on the speech acts of this argument.Algunos estudiosos han comprendido la Pragmática Trascendental de Karl-Otto Apel como una transformación pragmático lingüística de la filosofía de Johann G. Fichte. El objetivo de este trabajo es mostrar que esa interpretación confunde intención subjetiva con conocimiento trascendental. El trabajo comienza con una reconstrucción de algunos aspectos de esa interpretación. Luego es examinado un argumento contra la pragmática trascendental basado en esa interpretación. La conclusión es que la diferencia entre intención subjetiva y conocimiento trascendental puede ser explicada con la ayuda de una reflexión estricta sobre los actos de habla de ese argumento. (shrink)

El objetivo del presente trabajo es explicar la relación entre las nociones de discurso y acción en un marco pragmático trascendental. El trabajo comienza con una presentación de la primera noción y de la idea de pretensión de validez. Luego son examinadas algunas objeciones a la justificación última de la ética, formulada por Apel. La conclusión es que es posible una respuesta a esas objeciones mediante la diferenciación entre dos niveles de la relación entre discurso y acción: un nivel fáctico (...) y uno trascendental. The aim of this paper is to explain the relation between the notions of discourse and action in a transcendental-pragmatic frame. The paper begins with a presentation of the first notion and the idea of validity claim. After that, some objections to Apel's ultimate justifications of ethic are examined. The conclusion is that an answer to these objections is possible throw the difference between two levels of the relation between discourse and action: a real level and a transcendental one. (shrink)

El propósito de este trabajo es explicar la relación entre acción, reglas y discurso. El trabajo comienza con una presentación de algunas objeciones a la ética del discurso y su base común: la independencia entre moralidad y razón. Luego son propuestas contra esas objeciones dos tesis sobre la relación entre acción y discurso en un marco pragmático trascendental. La conclusión es que la posibilidad del discurso es una condición del sentido de la acción humana.

El objetivo de este trabajo es explicar la conexión entre reglas discursivas y normas morales en el marco de la ética del discurso. El trabajo comienza con un análisis de la diferencia entre acción y operación y con una reconstrucción del concepto de discurso. Luego es presentada la diferencia y la relación entre ley y obligación. La conclusión es que la conexión entre acción y discurso posible está implícita en la noción de responsabilidad moral.

The so‐called problem of irrelevant conjunction has been seen as a serious challenge for theories of confirmation. It involves the consequences of conjoining irrelevant statements to a hypothesis that is confirmed by some piece of evidence. Following Hawthorne and Fitelson, we reconstruct the problem with reference to Bayesian confirmation theory. Then we extend it to the case of conjoining irrelevant statements to a hypothesis that is dis confirmed by some piece of evidence. As a consequence, we obtain and formally present (...) a novel and more troublesome problem of irrelevant conjunction. We conclude by indicating a possible solution based on a measure‐sensitive approach and by critically discussing a major alternative way to address the problem. *Received December 2008; revised August 2009. †To contact the authors, please write to: Department of Philosophy, University of Turin, via Sant'Ottavio 20, 10124 Turin, Italy; e‐mail: vincenzo[email protected] ; [email protected] or [email protected]. (shrink)