The aim of our experiment was to analyse the effect of the emotional valence (positive, negative, or neutral) on true and false recognition, matching the arousal, frequency, concreteness, and associative strength of the study and recognition words. Fifty younger adults and 46 healthy older adults performed three study tasks (with words of different valence: positive, negative, neutral) and their corresponding recognition tests. Two weeks later, they performed the three recognition tests again. The results show that words with a negative valence (...) produced less true recognition and less false recognition than words with a positive or neutral valence, in both younger and older adults, on the immediate recognition test. This pattern of results was also found in the younger adults on the delayed recognition test, whereas in the older participants, these differences disappeared. Thus, when arousal is controlled, both younger and older adults tend to recognise negative information worse than positive or neutral information, but they also commit fewer errors. Results would suggest that the greater arousal commonly associated with negative stimuli, rather than their own valence, could explain some of the contradictory results found in the literature. (shrink)

We propose a view of identity beyond the individual in what we call interpersonal interidentities (IIIs). Within this approach, IIIs comprise collections of entangled stabilities that emerge in recurrent social interaction and manifest for those who instantiate them as relatively invariant though ever-evolving patterns of being (or more accurately, becoming) together. Herein, we consider the processes responsible for the emergence of these IIIs from the perspective of an enactive cognitive science. Our proposal hinges primarily on the development of two related (...) notions: enhabiting and coenhabiting. First, we introduce the notion of enhabiting, a set of processes at the individual level whereby structural interdependencies stabilise and thereafter undergird the habits, networks of habits, and personal identities through which we make sense of our experience. Articulating this position we lean on the notion of a tendency towards an optimal grip, though offering it a developmental framing, whereby iterative states of selective openness help realise relatively stable autonomous personal identities with their own norms of self-regulation. We then extend many of the notions found applicable here to an account of social coenhabiting, in particular, we introduce the notion of tending towards a co-optimal grip as central to the development of social habits, networks of habits, and ultimately IIIs. Such structures, we propose, also emerge as autonomous structures with their own norms of self-regulation. We wind down our account with some reflections on the implications of these structures outside of the interactions wherein they come into being and offer some thoughts about the complex animations of the individual embodied subjects that instantiate them. (shrink)

The main concern of this article is Weber's antagonism with respect to materialism and the distance or affinity between Marx's and Weber's standpoints. It focuses on two interconnected issues: the social and political role of religion and the emergence of modern capitalism. These two points are justified because of their strategic importance and because, with them, Weber's distance with respect to materialism apparently reaches its zenith. Through them, this text attempts to expose the main features of the controversy between Marxism (...) and Weberianism, evaluating the alternatives on the matter offered by different perspectives. Key Words: capitalism • Karl Marx • materialism • Protestant ethic • rationalism • religion • Max Weber. (shrink)

The use of black box algorithms in medicine has raised scholarly concerns due to their opaqueness and lack of trustworthiness. Concerns about potential bias, accountability and responsibility, patient autonomy and compromised trust transpire with black box algorithms. These worries connect epistemic concerns with normative issues. In this paper, we outline that black box algorithms are less problematic for epistemic reasons than many scholars seem to believe. By outlining that more transparency in algorithms is not always necessary, and by explaining that (...) computational processes are indeed methodologically opaque to humans, we argue that the reliability of algorithms provides reasons for trusting the outcomes of medical artificial intelligence. To this end, we explain how computational reliabilism, which does not require transparency and supports the reliability of algorithms, justifies the belief that results of medical AI are to be trusted. We also argue that several ethical concerns remain with black box algorithms, even when the results are trustworthy. Having justified knowledge from reliable indicators is, therefore, necessary but not sufficient for normatively justifying physicians to act. This means that deliberation about the results of reliable algorithms is required to find out what is a desirable action. Thus understood, we argue that such challenges should not dismiss the use of black box algorithms altogether but should inform the way in which these algorithms are designed and implemented. When physicians are trained to acquire the necessary skills and expertise, and collaborate with medical informatics and data scientists, black box algorithms can contribute to improving medical care. (shrink)

El propósito del presente trabajo es ofrecer una contextualización de “Las implicancias del pragmatismo para la educación”, que traducimos en este número de la revista. El artículo está compuesto de tres partes que John Dewey escribe en diciembre de 1908, febrero y marzo de 1909. Nuestra hipótesis interpretativa es que este texto es fundamental en dos sentidos: en primer lugar, para entender los lazos de Dewey con la tradición pragmatista; en segundo lugar, para comprender su conceptualización del vínculo entre pragmatismo (...) y educación. (shrink)

In the sixteenth and seventeenth centuries, members of the Salamanca School engaged in a sustained and sophisticated discussion of the issue of just prices. This article uses their contribution as a point of departure for a consideration of justice in pricing which will be relevant to current-day circumstances. The key theses of members of this school were that fairness of exchanges should be assessed objectively, that the fair price of an article is one equal to its ‘value’, and that the (...) best indicator of that value is the price that article commonly fetches in an open market. This article tries to bring to light the attractiveness of those views in order to guide current practice by contrasting them with alternative views, showing their connection with intuitively attractive basic standards, and linking them to commonly shared intuitions. (shrink)

We would like to thank the authors of the commentaries for their critical appraisal of our feature article, Who is afraid of black box algorithms?1 Their comments, suggestions and concerns are various, and we are glad that our article contributes to the academic debate about the ethical and epistemic conditions for medical Explanatory AI. We would like to bring to attention a few issues that are common worries across reviewers. Most prominently are the merits of computational reliabilism —in particular, when (...) promoted as an alternative to transparency—and CR as necessary but not sufficient for delivering trust. We finalise our response by addressing concerns about the place and role of artificial intelligence in medical decision-making and the physician’s responsibilities. We understand the concerns and reservations that some of the reviewers express regarding the epistemic merits of CR. We believe that, in part, this is due to a practice too deeply rooted in transparency. But on …. (shrink)

Este artículo analiza el sentido que el concepto de mundo circundante (Umwelt) asume en Jakob von Uexküll, examina las distintas formulaciones que presenta en el desarrollo de su obra, y destaca las sucesivas redefiniciones que afectan a sus dos componentes: el mundo perceptible (Merkwelt) y el mundo de efectos (Wirkungswelt, Wirkwelt). Teniendo en cuenta el significativo impacto que el concepto de Umwelt tuvo en la filosofía continental, el propósito del estudio es reconstruir su sentido en función de las fuentes primarias (...) y, a través de un análisis histórico-conceptual, iluminar aspectos que no suelen ser tematizados en la literatura –en particular, aquellos relativos al mundo de efectos–. (shrink)

The variety \(\mathbb{DHMSH}\) of dually hemimorphic semi-Heyting algebras was introduced in 2011 by the second author as an expansion of semi-Heyting algebras by a dual hemimorphism. In this paper, we focus on the variety \(\mathbb{DHMSH}\) from a logical point of view. The paper presents an extensive investigation of the logic corresponding to the variety of dually hemimorphic semi-Heyting algebras and of its axiomatic extensions, along with an equally extensive universal algebraic study of their corresponding algebraic semantics. Firstly, we present a (...) Hilbert-style axiomatization of a new logic called "Dually hemimorphic semi-Heyting logic" (\(\mathcal{DHMSH}\), for short), as an expansion of semi-intuitionistic logic \(\mathcal{SI}\) (also called \(\mathcal{SH}\)) introduced by the first author by adding a weak negation (to be interpreted as a dual hemimorphism). We then prove that it is implicative in the sense of Rasiowa and that it is complete with respect to the variety \(\mathbb{DHMSH}\). It is deduced that the logic \(\mathcal{DHMSH}\) is algebraizable in the sense of Blok and Pigozzi, with the variety \(\mathbb{DHMSH}\) as its equivalent algebraic semantics and that the lattice of axiomatic extensions of \(\mathcal{DHMSH}\) is dually isomorphic to the lattice of subvarieties of \(\mathbb{DHMSH}\). A new axiomatization for Moisil's logic is also obtained. Secondly, we characterize the axiomatic extensions of \(\mathcal{DHMSH}\) in which the "Deduction Theorem" holds. Thirdly, we present several new logics, extending the logic \(\mathcal{DHMSH}\), corresponding to several important subvarieties of the variety \(\mathbb{DHMSH}\). These include logics corresponding to the varieties generated by two-element, three-element and some four-element dually quasi-De Morgan semi-Heyting algebras, as well as a new axiomatization for the 3-valued Łukasiewicz logic. Surprisingly, many of these logics turn out to be connexive logics, only a few of which are presented in this paper. Fourthly, we present axiomatizations for two infinite sequences of logics namely, De Morgan Gödel logics and dually pseudocomplemented Gödel logics. Fifthly, axiomatizations are also provided for logics corresponding to many subvarieties of regular dually quasi-De Morgan Stone semi-Heyting algebras, of regular De Morgan semi-Heyting algebras of level 1, and of JI-distributive semi-Heyting algebras of level 1. We conclude the paper with some open problems. Most of the logics considered in this paper are discriminator logics in the sense that they correspond to discriminator varieties. Some of them, just like the classical logic, are even primal in the sense that their corresponding varieties are generated by primal algebras. (shrink)

The purpose of this paper is to define a new logic $${\mathcal {SI}}$$ called semi-intuitionistic logic such that the semi-Heyting algebras introduced in [ 4 ] by Sankappanavar are the semantics for $${\mathcal {SI}}$$ . Besides, the intuitionistic logic will be an axiomatic extension of $${\mathcal {SI}}$$.

Motivated by the definition of semi-Nelson algebras, a propositional calculus called semi-intuitionistic logic with strong negation is introduced and proved to be complete with respect to that class of algebras. An axiomatic extension is proved to have as algebraic semantics the class of Nelson algebras.

Origins -- French personalism -- Other personalist currents -- Personalist philosophy: a proposal.

The traditional way of understanding life, as a self-appropriating and self-organizing process of not ceasing to exist, of taking care of one's own hunger, is challenged by today's unprecedented proliferation of discourses and techniques concerning the living being. This challenge entails questioning the fundamental concepts of metaphysical thinking--namely, time, finality, and, above all, being. Garrido argues that today we are in a position to repeat Nietzsche's assertion that there is no other representation of "being" than that of "living." But in (...) order to carry out this deconstruction of ontology, we need to find new ways of asking: What is life? In this study, Garrido establishes the basic elements of the question concerning life through readings of Aristotle, Nietzsche, Heidegger, and Derrida; through the discussion of scientific breakthroughs in thermodynamics and evolutionary and developmental biology; and through the reexamination of the notion of hunger in both its metaphysical and its political implications. (shrink)

El vínculo entre ciencias cognitivas y filosofía es fructífero y diverso. Sin embargo, son pocas las tentativas filosóficas que examinan el concepto de aprendizaje en su relación con aplicaciones para el campo educativo. El pragmatismo filosófico ofrece un marco teórico sustentable para efectuar esta tarea. Este estudio se plantea como una aproximación al concepto de aprendizaje desde el pragmatismo contemporáneo de Robert Brandom (1994, 2001). Concretamente, analiza este concepto como una instancia de la idea de ‘prácticas sociales’, a partir de (...) la concepción sobre normatividad que Brandom propone, evaluando las ventajas epistemológicas de esta postura. Al mismo tiempo, advierte las implicancias de reducir el aprendizaje a regularidades causales o naturales, tal como se desprende del abordaje cognitivista en educación. A tal fin, el artículo sitúa las filiaciones de tradición y conceptuales de la idea de ‘prácticas sociales’ en la filosofía reciente, y a partir de dicha reconstrucción muestra que es posible un abordaje del aprendizaje más allá del cognitivismo (sin cuestionar sus contribuciones posibles). Asimismo, señala los vínculos entre aprendizaje y norma, así como también entre aprendizaje y lenguaje. Como resultado, este análisis permite situar el aprendizaje formal en el marco de las prácticas sociales, explicar su naturaleza normativa y definir el tipo de condicionamiento que el lenguaje adquiere en él. (shrink)

En este artículo, procederemos a examinar el concepto de agencement en El anti-Edipo. Probamos que su uso inicial se registra, efectivamente, en el primer tomo de Capitalismo y esquizofrenia. Analizamos las nueve apariciones del concepto en dicho marco y demostramos que se halla, al menos en principio, estrechamente ligado al concepto de máquina (deseante). A la vez, sentamos la hipótesis de que este último no es sustituido por el primero (equívoco suscitado por el propio Deleuze) sino que, tras haber coexistido (...) ambos, agencement habría resultado más eficiente como pilar teórico de una teoría general de las máquinas. (shrink)

Las versiones hermenéuticas de la identidad que defienden autores como Alasdair MacIntyre, Charles Taylor y Paul Ricoeur, se enfrentan a otras versiones Hermenéuticas como la Richar Rorty, quien se adhieren a una noción de contingencia radical; y a ciertas concepciones reduccionistas de la tradición analítica, como las defendidas por Derek Parfit, quien pretenden explicar la identidad humana sobre la base exclusiva de acontecimientos impersonales. Pese a las coincidencias entre las posiciones de Rorty y Parfit en lo que respecta a su (...) enfrentamiento a las ontologías positivas, sus posiciones no son equiparables. De la noción de contingencia radical de la identidad humana, Rorty pretende extraer consecuencias éticas para determinar el estatuto de los agentes. Parfit, en cambio, utiliza su “descubrimiento” para separar de modo radical la supuesta conexión entre identidad y moralidad. La pretensión del autor oxoniense de establecer paralelismos entre su versión utilitarista basada en la indeterminación y la vacuidad de nuestra identidad y la noción budista de “no-yo”, nos obliga a abordar críticamente las posturas reduccionistas y no reduccionistas de dicha tradición. (shrink)

El artículo analiza el problema de los mundos humanos a partir del concepto de mundo circundante que J. von Uexküll plantea para pensar la existencia animal. En este sentido, introduce dicho concepto biológico y sus implicancias, reconstruye las interpretaciones y críticas que se le formulan en la antropología filosófica alemana de principios del siglo XX, y defiende la idea según la cual, desde un horizonte arqueológico, habría una oposición correlativa entre el Umwelt biológico y las ideas filosóficas de mundo humano (...) previamente tematizadas. (shrink)

Between 1494 and 1498, Savonarola was involved in a wide range of actions and challenges: exposition of his theological doctrine, reformist activities, moral and political preaching and prophetic announcements. Initially, much of this activity was dominated by a rhetoric of peace, an idea closely linked to the Christian and scholastic tradition. Under the auspices of Savonarola, Florence promulgated the Legge della pace, a law designed to moderate executive power and ensure the reconciliation of citizens. However, the severe Florentine crisis and (...) the polarisation around his figure led Savonarola to change his discourse according to the practical needs of the moment. The scholastic notion of peace, understood as the harmonious unity of plurality, in fact allowed for a friend-foe logic; however, it was far removed from the civic-republican approach to politics. (shrink)

This book addresses key conceptual issues relating to the modern scientific and engineering use of computer simulations. It analyses a broad set of questions, from the nature of computer simulations to their epistemological power, including the many scientific, social and ethics implications of using computer simulations. The book is written in an easily accessible narrative, one that weaves together philosophical questions and scientific technicalities. It will thus appeal equally to all academic scientists, engineers, and researchers in industry interested in questions (...) related to the general practice of computer simulations. (shrink)

Extending the relation between semi-Heyting algebras and semi-Nelson algebras to dually hemimorphic semi-Heyting algebras, we introduce and study the variety of dually hemimorphic semi-Nelson algebras and some of its subvarieties. In particular, we prove that the category of dually hemimorphic semi-Heyting algebras is equivalent to the category of dually hemimorphic centered semi-Nelson algebras. We also study the lattice of congruences of a dually hemimorphic semi-Nelson algebra through some of its deductive systems.

In this paper we introduce a logic that we name semi Heyting–Brouwer logic, \, in such a way that the variety of double semi-Heyting algebras is its algebraic counterpart. We prove that, up to equivalences by translations, the Heyting–Brouwer logic \ is an axiomatic extension of \ and that the propositional calculi of intuitionistic logic \ and semi-intuitionistic logic \ turn out to be fragments of \.

El objeto de este artículo es mostrar las similitudes que existen entre el estructuralismo metateórico sneedeano y la que considero es la propuesta teórica más desarrollada del estructuralismo francés, la teoría antropológica de Claude Lévi-Strauss, en particular, su teoría de los sistemas elementales de parentesco. Aunque entre el estructuralismo francés de Lévi-Strauss y el estructuralismo metateórico sneedeano sólo existe, como diría Wittgenstein, un “aire de familia”, sin embargo, quiero mostrar que gracias al trabajo algebraico de André Weil y, en particular, (...) a su clarificación de la noción de estructura, existe un “puente” entre la propuesta teórica de Lévi-Strauss y la metateórica del estructuralismo inaugurada por J. D. Sneed en 1971 con la publicación de su libro The logical structure of mathematical physics. (shrink)

La intención de este artículo es proponer un término más adecuado para la nominación de las prácticas racistas y brindar una perspectiva analítica netamente relacional mediante la determinación y sistematización de las articulaciones intervinientes. Se trata de un trabajo de discusión teórica construido a partir de tres problemas, a saber: ¿cómo denominar un fenómeno social (racismo) que parte de una noción (razas humanas) carente de sustento biológico?, ¿qué relaciones comprende? y ¿a qué se debe su permanencia? Son tres las hipótesis (...) que los responden. En primer término, la contradicción enunciativa se resuelve introduciendo la expresión biologicismo. En segundo lugar, los relacionamientos que comprende son tres: el “técnico”, entre la dimensión física y las demás esferas humanas; el jerárquico, en función de las valoraciones diferenciales (mediante la dialéctica de las categorías norma-ideal/anomalía-degradante); y el instrumental, a partir de los intereses que propicia y encubre. Finalmente, la pervivencia se basa en tal instrumentalización por parte de las clases hegemónicas. Dos son los aportes. Por un lado, y desde una posición en alguna medida interdisciplinar, la justificación del uso de un concepto con mayor precisión. Y por el otro, el esclarecimiento de las relaciones acopladas intervinientes. Metodológicamente se procede examinando fuentes históricas y bibliografía sociológica y antropológica pertinente. (shrink)

En este artículo, mediante un abordaje archifilológico, nos proponemos acentuar el devenir de la asociación crítica de Araripe Júnior entre la hiperestesia y los efectos de lectura de los folletines desde sus primeros abordajes de la recepción del naturalismo por parte de escritores jóvenes, en el momento en el que se multiplican exponencialmente las publicaciones periódicas y se constituye un público lector. Reparamos, a su vez, en una asociación recurrente entre una literatura folletinesca considerada descartable y un lector caracterizado como (...) desecho social. El sondeo de su singular concepción de la hiperestesia literaria resulta productivo para trazar nuevos abordajes de su influyente teoría del estilo tropical y de la obnubilación brasílica, proyectada como supervivencia en el canon literario y en los folletines de sus contemporáneos. A su vez, hacemos hincapié en el sentido prescriptivo de los ensayos de Araripe Júnior, dirigidos a los jóvenes escritores de folletines, para conjurar el potencial revulsivo de la literatura hiperestésica naturalista sobre el público masivo y para reconducir su lirismo inervador hacia la constitución de una psicologia do tumulto, que contribuya a una renovación estética y cultural. También en torno a la hiperestesia, la intervención prescriptiva de sus ensayos procura regular la influencia de un Zola monstruoso, en su capacidad de mostrar y hacer sentir la realidad de la vida precaria moderna. Finalmente, observamos su abordaje de la literatura como toxina, en el que resuena una clave farmacológica de la literatura moderna latinoamericana. (shrink)

Este artículo analiza los desarrollos que Foucault realiza en torno a la analítica de la finitud en su libro Las palabras y las cosas con el fin de dilucidar las diferencias conceptuales con que Freud y Lacan abordan el sujeto del psicoanálisis. Se pretende reconocer la potencia de la crítica foucaulteana al cuadrilátero antropológico y revisar si las teorías de Freud y Lacan se encuentran o no dentro del mismo, buscando pensar la fecundidad de las direcciones contemporáneas del psicoanálisis. Resultados: (...) Foucault dejó en claro que es necesario prescindir del hombre para poder pensar de nuevo la realidad humana. Freud abrió las puertas de tal desaparición, aunque sus cimientos epistemológicos lo dejaron fijado a una antropología biologicista. Lacan retornó lingüísticamente a Freud para rescatar la potencia de su descubrimiento y formalizar un psicoanálisis cuyo sujeto no es el hombre. Orientaciones actuales del psicoanálisis parecen olvidar este último esfuerzo. (shrink)

Cet article analyse la notion de « sens » chez Jean-Luc Nancy à partir du constat suivant : le phénomène du sens et de la supposée « crise du sens » qui traverserait aujourd’hui l’humanité révèle que le sens du sens est lui-même celui d’une mutation. Face à cette révélation, il ne s’agit plus de poser la question : « que faire? », « vers où aller? » ou « comment orienter une nouvelle mutation? ». Il s’agit d’entamer la critique (...) du sens, la recherche des conditions de possibilité de la production et de transformation du sens, c’est-à-dire du monde lui-même par la pensée, la connaissance et l’action. (shrink)

En este artículo exploramos analogías estructurales entre las esferas de la teología, la epistemología y la política desde una perspectiva dialéctica. El punto de partida es la constatación de que la «reificación» o «cosificación» de la totalidad se expresa como negación de la alteridad. En la esfera teológica, la estructura se define en términos de «inmanencia-trascendencia». En este campo, el marco inmanente puede estar cerrado en sí mismo, como ocurre con el naturalismo fisicalista que se presenta como «la totalidad (el (...) universo físico) que contiene todas las totalidades», o puede permanecer abierto a su exterioridad o trascendencia. En la esfera epistemológica, el círculo de representaciones que conforma la correlación sujeto-objeto, la relación mente-mundo, la topología interior-exterior, puede interpretarse como una totalidad primitiva e insuperable, el llamado «círculo correlacional»; o puede permanecer abierta a su trasfondo. En la esfera política, la modernidad capitalista, como totalidad histórica, puede presentarse como «fin de la historia», y expresarse como negación de sus exterioridades —las poblaciones excluidas, la naturaleza no humana, y las generaciones venideras—, o someterse al veredicto de injusticia de sus víctimas, y asumir la responsabilidad de los efectos no deseados producidos por su ceguera. Estas estructuras ponen de manifiesto una cuestión transhistórica, relativa al problema de la objetividad del mundo que emerge de nuestra condición finita. Pero también nos plantean una cuestión histórica, relativa a la autocomprensión de la modernidad, a la lógica intrínseca del orden capitalista, y a los horizontes de la era postsecular. (shrink)

This paper studies Rom 13:1-10, analyzing the inner connection between Paul’s exhortation to submit to governing authorities and his admonition to love one another. It addresses interpretative and exegetical issues, including possible textual interpolations and the meanings of key terms. The analysis demonstrates that Paul’s argument hinges on the incrementum (αὔξησις) of underlying rationales, moving from general and external incentives to personal and internal motivations. This study highlights that the coherence of the passage relies on understanding both its imperatives and (...) motivations, ultimately suggesting a deeper moral imperative. (shrink)

This article aims to develop a new account of scientific explanation for computer simulations. To this end, two questions are answered: what is the explanatory relation for computer simulations? And what kind of epistemic gain should be expected? For several reasons tailored to the benefits and needs of computer simulations, these questions are better answered within the unificationist model of scientific explanation. Unlike previous efforts in the literature, I submit that the explanatory relation is between the simulation model and the (...) results of the simulation. I also argue that our epistemic gain goes beyond the unificationist account, encompassing a practical dimension as well. (shrink)

En este escrito me propongo presentar una reconstrucción à la Suppes de la Teoría pictórica, representacional o figurativa del lenguaje propuesta por L. Wittgenstein en el Tractatus Logico-Philosophicus para mostrar los límites del pensamiento, o más precisamente del lenguaje como expresión sensible del pensamiento, sobre el presupuesto de la existencia no explícita por parte de su autor de un isomorfismo entre la estructura del lenguaje, como expresión sensible del pensamiento, y la del mundo; de suerte que, para que el lenguaje (...) pueda figurar algo del mundo, se requiere que entre ambas estructuras, la del lenguaje y la del mundo, se pueda establecer una función h-isomórfica no solo a nivel de sus dominios respectivos, dado que ambos poseen la misma cardinalidad, sino entre sus predicados y relatores, dada su misma aridad. Con ella pretendo dar cuenta de la compleja teoría pictórica o figurativa con el fin de diferenciar aquello que podemos decir con sentido, de aquello que únicamente podemos mostrar. (shrink)

The determination of environmental impact constitutes a key step for the preservation of the environment and environmental control of the human activities. However, this tool is constituted ideologically by criteria of rationality of present post-industrial western society. This set of criteria (int..

During the course of its short history the discipline concerned with the origin of life has given birth to several scientific programmes in the Lakatosian sense, two of the most prominent and widespread being those initiated by Oparin (life began from protein entities) and Muller-Haldane (life began from genetic entities). The present paper sets down the bases for the rational reconstruction of both views by identifying their hard core and some of their successive developments. An assessment is made of the (...) various stages in the evolution of these programmes with respect to the crucial Lakatosian notions of progressivity and regressivity and of how their arguments stand up against one another. This epistemological analysis also establishes the internal reasons why the RNA version of the genotype programme (developed in particular by L. Orgel and S. Spiegelman) has today taken on a progressive character and enjoys recognition by the international scientific community. (shrink)