Hasard et probabilité sont des concepts importants dans l’épistémologie de Poincaré, malgré les difficultés qu’ils introduisent. La notion de hasard est conçue dans un scénario conceptuel où le déterminisme règne encore; la probabilité, à son tour, est toujours basée sur un ensemble de conventions et d’hypothèses qui cherchent à surmonter l’incertitude qui menace la connaissance scientifique. L’article consiste en une approche philosophique qui vise à clarifier ces notions à partir du point de vue de l’épistémologie de Poincaré et de montrer (...) que le hasard trouve sa place dans les constructions théoriques lorsqu’il est instancié par les ressources du calcul des probabilités. (shrink)

Hasard et probabilité sont des concepts importants dans l’épistémologie de Poincaré, malgré les difficultés qu’ils introduisent. La notion de hasard est conçue dans un scénario conceptuel où le déterminisme règne encore; la probabilité, à son tour, est toujours basée sur un ensemble de conventions et d’hypothèses qui cherchent à surmonter l’incertitude qui menace la connaissance scientifique. L’article consiste en une approche philosophique qui vise à clarifier ces notions à partir du point de vue de l’épistémologie de Poincaré et de montrer (...) que le hasard trouve sa place dans les constructions théoriques lorsqu’il est instancié par les ressources du calcul des probabilités. (shrink)

Probability plays a crucial role regarding the understanding of the relationship which exists between mathematics and physics. It will be the point of departure of this brief reflection concerning this subject, as well as about the placement of Poincaré’s thought in the scenario offered by some contemporary perspectives.

Este texto introduz a tradução do discurso de intitulado "Sobre os números transfinitos" ("Über transfinite Zahlen"), proferido por Henri Poincaré em 27 de abril de 1909, na Universidade de Göttingen. Após uma breve apresentação do pensamento do autor acerca dos fundamentos da aritmética, procura-se citar os aspectos mais relevantes da chamada crise dos fundamentos da matemática, para então introduzir a reformulação do conceito de predicatividade aventada no referido discurso sobre números transfinitos, contribuição compreendida como um recurso teórico necessário para a (...) superação dos paradoxos relativos à teoria dos conjuntos. Com isso, pretende-se evidenciar o papel central do texto publicado nesta edição para o desenvolvimento da concepção matemática de Henri Poincaré. This article provides an introduction to the translation of the lecture entitled "On transfinite numbers" ("Über transfinite Zahlen"), given by Henri Poincaré at the University of Göttingen on April 27, 1909. Following a short presentation of Poincaré's views on the foundations of arithmetic, it identifies the aspects of the so-called crisis of the foundations of mathematics that are most relevant for understanding his reconstruction of the concept of predicativity, which is intended to be a theoretical resource that may overcome the paradoxes of set theory. In doing so, the article highlights the central role of this text in the process of maturation of Poincaré's views on the foundations of mathematics. (shrink)

Este texto introduz a tradução do discurso de intitulado "Sobre os números transfinitos" ("Über transfinite Zahlen"), proferido por Henri Poincaré em 27 de abril de 1909, na Universidade de Göttingen. Após uma breve apresentação do pensamento do autor acerca dos fundamentos da aritmética, procura-se citar os aspectos mais relevantes da chamada crise dos fundamentos da matemática, para então introduzir a reformulação do conceito de predicatividade aventada no referido discurso sobre números transfinitos, contribuição compreendida como um recurso teórico necessário para a (...) superação dos paradoxos relativos à teoria dos conjuntos. Com isso, pretende-se evidenciar o papel central do texto publicado nesta edição para o desenvolvimento da concepção matemática de Henri Poincaré. This article provides an introduction to the translation of the lecture entitled "On transfinite numbers" ("Über transfinite Zahlen"), given by Henri Poincaré at the University of Göttingen on April 27, 1909. Following a short presentation of Poincaré's views on the foundations of arithmetic, it identifies the aspects of the so-called crisis of the foundations of mathematics that are most relevant for understanding his reconstruction of the concept of predicativity, which is intended to be a theoretical resource that may overcome the paradoxes of set theory. In doing so, the article highlights the central role of this text in the process of maturation of Poincaré's views on the foundations of mathematics. (shrink)

Examina a relação entre a leitura e os programas computacionais de mineração de textos, no contexto das Humanidades Digitais (HD). Através da pesquisa bibliográfica e da reunião de fontes textuais relevantes para o argumento, esta relação é descrita sob a forma de uma simbiose entre o ser humano e o computador, nos termos propostos inicialmente por Asimov (2005). Uma concepção da leitura como operação da inteligência é posta em diálogo com o conceito e as aplicações da mineração de textos. Da (...) reflexão sobre a simbiose entre leitura e mineração de textos é obtido, como resultado, um ponto de vista em relação às HD, entendida como um conjunto de estratégias para o crescimento e a adaptação da cultura humana no ambiente digital. (shrink)

Este artigo tem como objetico examinar a abordagem evolutiva do comportamento informacional e refletir acerca de algumas consequências trazidas por esta abordagem para as bases epistemológicas da biblioteconomia e ciência da informação (BCI) nos trabalhos de Amanda Spink e Armando Malheiro da Silva. Incorpora uma crítica de modelos de busca de conhecimento como o de Nicholas Belkin, por causa de seu resíduo tecnicista. Metodologia: Pesquisa bibliográfica e posterior análise das fontes recuperadas. Análise realizada através do exame argumentativo e conceitual de (...) textos considerados referenciais para cada parte do argumento. Resultados: Ressalta a distinção entre interpretações divergentes do termo “evolução”. Reconhece a exigência inevitável de uma atitude holística ou interdisciplinar para a compreensão do comportamento informacional. Destaca a valorização dos comportamentos humanos de caráter informal e lúdico em relação à informação. (shrink)

Kurt Godel was the most outstanding logician of the twentieth century, famous for his work on the completeness of logic, the incompleteness of number theory, and the consistency of the axiom of choice and the continuum hypothesis. He is also noted for his work on constructivity, the decision problem, and the foundations of computation theory, as well as for the strong individuality of his writings on the philosophy of mathematics. Less well-known is his discovery of unusual cosmological models for Einstein's (...) equations, permitting "time-travel" into the past. This second volume of a comprehensive edition of Godel's works collects together all his publications from 1938 to 1974. Together with Volume I (Publications 1929-1936), it makes available for the first time in a single source all of his previously published work. Continuing the format established in the earlier volume, the present text includes introductory notes that provide extensive explanatory and historical commentary on each of the papers, a facing English translation of the one German original, and a complete bibliography. Succeeding volumes are to contain unpublished manuscripts, lectures, correspondence, and extracts from the notebooks. Collected Works is designed to be accessible and useful to as wide an audience as possible without sacrificing scientific or historical accuracy. The only complete edition available in English, it will be an essential part of the working library of professionals and students in logic, mathematics, philosophy, history of science, and computer science. These volumes will also interest scientists and all others who wish to be acquainted with one of the great minds of the twentieth century. (shrink)

ABSTRACTThis article draws attention to the presence of a previously unnoticed transliterated telestich in the transformation of stones into bodies in the episode of Deucalion and Pyrrha in Ovid's Metamorphoses. Detection of the Greek intext, which befits the episode's amplified bilingual atmosphere, is encouraged by a number of textual cues. The article also suggests a ludic connection to Aratus’ Phaenomena.

La preparación preuniversitaria en el Perú es esencial para poder adquirir los conocimientos que no se desarrollaron, se descuidaron o que el alumno olvidó en la formación escolar. Frente a ese panorama, la academia Aduni emerge como una solución para que el interesado pueda alcanzar una vacante de ingreso directo a la universidad; en especial, a aquellas que requieren una dedicación más exigente, como es el caso de la Universidad Nacional Mayor de San Marcos. Considerando esa premisa, se le ha (...) realizado una entrevista al educador preuniversitario Wilfredo Zambrano, quien se encarga hace muchos años de las materias de Lenguaje y Literatura en la misma institución. Para ello, el profesor mencionará qué estrategias emplea para transmitir sus saberes con eficacia, además de incentivar la lectura y la interpretación de los textos, los cuales son fundamentales para todas las carreras profesionales. De esta manera, este texto dejará como evidencia cuáles son los retos que tienen los estudiantes y los docentes que asumen este rol comprometedor en esa etapa académica. (shrink)

The paper focuses on the deep relationships between the book and the modalities of production and diffusion of philosophic ideas from Plato to Galen. In order to explain such complex phaenomena, the evidences coming from literary sources will be compared to the results of philological and palaeographical examination of Greek papyri from Egypt bearing philosophical texts. These papyri have been found in different places and contexts and can be dated to different periods, from early Hellenistic to Imperial age: but all (...) of them can be connected to intellectual practices, scholarly habits and reading manners lasting for centuries. (shrink)

El propósito de este estudio es redireccionar y actualizar la interpretación del discurso que se deriva de la Comisión de la Verdad y la Reconciliación (CVR) en torno al atentado originado en la residencia del embajador de Japón durante el Gobierno de Fujimori y la intervención respectiva con la operación Chavín de Huántar. Para ello, se utilizarán distintas estrategias de análisis del discurso histórico y archivístico del Informe final (2003) de la CVR y la inclusión de la categoría antropológica de (...) memoria de Elizabeth Jelin, que será trascendental para constatar el almacenamiento y la influencia de este hecho en los ciudadanos. Un resultado relevante de ese contexto es la insatisfacción ciudadana hacia el Estado, puesto que para aminorar ese atentado los militares y el Servicio de Inteligencia Nacional (SIN), autorizados por el Gobierno, transgredieron los derechos humanos, así como la prensa no se desempeñó con ética —reacción que no es ajena a la actualidad—. Con todo ello, se concluirá que no existen maneras coetáneas de establecer convenios con los opositores al Gobierno. A la vez, no se busca la concientización. Más bien, se recurren a mecanismos violentos. Ese problema debería solucionarse, más que preocuparse por una reconstrucción escrita e idónea de la historia. (shrink)

The concepts expressed by social role terms such as artist and scientist are unique in that they seem to allow two independent criteria for categorization, one of which is inherently normative. This study presents and tests an account of the content and structure of the normative dimension of these “dual character concepts.” Experiment 1 suggests that the normative dimension of a social role concept represents the commitment to fulfill the idealized basic function associated with the role. Background information can affect (...) which basic function is associated with each social role. However, Experiment 2 indicates that the normative dimension always represents the relevant commitment as an end in itself. We argue that social role concepts represent the commitments to basic functions because that information is crucial to predict the future social roles and role-dependent behavior of others. (shrink)

Batteries are a fundamental storage component due to its various applications in mobility, renewable energies and consumer electronics among others. Regardless of the battery typology, one key variable from a user’s perspective is the remaining energy in the battery. It is usually presented as the percentage of remaining energy compared to the total energy that can be stored and is labeled State Of Charge (SOC). This work addresses the development of a hybrid model based on a Lithium Iron Phosphate (LiFePO4) (...) power cell, due to its broad implementation. The proposed model calculates the SOC, by means of voltage and electric current as inputs and the latter as the output. Therefore, four models based on k-Means, Agglomerative Clustering, Gaussian Mixture and Spectral Clustering techniques have been tested in order to obtain an optimal solution. (shrink)

The article reviews some analyses of temporal language in logical approaches to natural language semantics. It considers some asymmetries between past and future, manifested in language, which motivate the “standard view” of the non-reversibility of time and the persistence of the past. It concludes with a puzzle about the changing past which challenges the standard view.

New technologies and recent palaeographical studies on the reconstruction of the ancient scrolls from Herculaneum encouraged new hypotheses on the outline of the ancient library in the «Villa dei Papiri». After a brief overview of the problems involved in the reconstruction of the volumina, this contribution focuses on the work of two scribes -the so-called Anonimo XXI and XXV - who copied many scrolls and collaborated with each other at least in two cases. A passage from Aristophanes’ Clouds, probably from (...) Philodemus’ treatise De vitiis, has been read for the first time. The final part of the article examines shape and structure of the titles of this important treatise. (shrink)

Ian Rumfitt (2000) developed a bilateralist account of logic in which the meaning of the connectives is given by conditions on asserted and rejected sentences. An additional set of inference rules, the coordination principles, determines the interaction of assertion and rejection. Fernando Ferreira (2008) found this account defective, as Rumfitt must state the coordination principles for arbitrary complex sentences. Rumfitt (2008) has a reply, but we argue that the problem runs deeper than he acknowledges and is in fact related to (...) the challenge of establishing proof-theoretic harmony. We motivate a distinctively bilateral criterion for harmony and show how the bilateralist can meet it. This also resolves Ferreira's complaint. (shrink)

The search for mechanisms has been a common practice in scientific research. However, since the empiricist critique of causality, and especially during the second third of the twentieth century, other non-mechanistic perspectives—especially deductivism—gained predominance. But the sustained effort of authors such as Michael Scriven, Mario Bunge and especially Wesley Salmon contributed to restoring the respectability of causality and mechanisms in philosophy of science. Some members of the causal family, usually lumped under the name of “new mechanistic philosophy”, emphasize the description (...) of mechanisms, especially causal ones, as a central aspect of explanation and other research practices in several areas of science. This approach offers viable solutions to the various ontological and methodological objections that are opposed to the two traditional approaches. In this work the basic characteristics of three philosophies that highlight the description of mechanisms as a central element to explanation and their suitability for the science of ecology are discussed. (shrink)

Discussions in social psychology overlook an important way in which biases can be encoded in conceptual representations. Most accounts of implicit bias focus on ‘mere associations’ between features and representations of social groups. While some have argued that some implicit biases must have a richer conceptual structure, they have said little about what this richer structure might be. To address this lacuna, we build on research in philosophy and cognitive science demonstrating that concepts represent dependency relations between features. These relations, (...) in turn, determine the centrality of a feature f for a concept C: roughly, the more features of C depend on f, the more central f is for C. In this paper, we argue that the dependency networks that link features can encode significant biases. To support this claim, we present a series of studies that show how a particular brilliance-gender bias is encoded in the dependency networks which are part of the concepts of female and male academics. We also argue that biases which are encoded in dependency networks have unique implications for social cognition. (shrink)

Este artículo examina La ciudad y los perros (1963) de Mario Vargas Llosa para fundamentar cómo se logra la estratificación teórica de estilos y técnicas que se emplean para abordar la violencia en el texto. Sobre la epistemología, recurre principalmente a Todorov, Hamburger, Lotman y Genette. Y, para argumentar la manifestación de la violencia, considera las eventualidades que padecen los personajes del Colegio Militar Leoncio Prado; en especial, el Jaguar, el Poeta y el Esclavo. Esas acciones serán justificadas por la (...) instrucción castrense, la evolución humana, la necesidad de una conducta hegemónica idónea y la búsqueda del efecto perlocutivo en el lector. Para sistematizar esas peculiaridades, se opta por una metodología adscrita al cotejo de información teórica para que sea confrontada con el discurso literario. El análisis que se desarrolla es complementado con fragmentos representativos para que las formulaciones sean más directas y convincentes. Como resultado, se confirma esa correspondencia entre las teorías heterogéneas, la novela y la interpretación, por lo que el concepto de violencia adoptaría una multidimensionalidad que evidencia su existencia y su requerimiento esencial en los personajes. Con ello, se sustenta como conclusión que la violencia en ese contexto debería ser permanente e imprescindible para subsistir. (shrink)

Recommender Systems (RecSys) have been around since the early days of the Internet, helping users navigate the vast ocean of information and the increasingly available options that have been available for us ever since. The range of tasks for which one could use a RecSys is expanding as the technical capabilities grow, with the disruption of Machine Learning representing a tipping point in this domain, as in many others. However, the increase of the technical capabilities of AI-powered RecSys did not (...) come with a thorough consideration of their ethical implications and, despite being a well-established technical domain, the potential impacts of RecSys on their users are still under-assessed. This paper aims at filling this gap in regards to one of the main impacts of RecSys: personal autonomy. We first describe how technology can affect human values and a suitable methodology to identify these effects and mitigate potential harms: Value Sensitive Design (VSD). We use VSD to carry out a conceptual investigation of personal autonomy in the context of a generic RecSys and draw on a nuanced account of procedural autonomy to focus on two components: competence and authenticity. We provide the results of our inquiry as a value hierarchy and apply it to the design of a speculative RecSys as an example. (shrink)

The Political Philosophy of Niccolo Machiavelli is a clear account of Machiavelli's thought, major theories and central ideas. Geared towards the specific requirements of students who need to reach a sound understanding of Machiavelli's ideas, it is the ideal companion to the study of this influential and challenging philosopher.

In this article an attempt is made to detect what could have been the dialectical reasons that impelled the Cār-vāka thinker Udbhatabhatta to revise and reformulate the classical materialistic concept of cognition. If indeed according to ancient Cārvākas cognition is an attribute entirely dependent on the physical body, for Udbhatabhatta cognition is an independent principle that, of course, needs the presence of a human body to manifest itself and for this very reason it is said to be a peculiarity of (...) the body. Therefore, Udbhatabhatta seems to de-scribe the cognizing faculty according to a double ontology: it is both a principle and a characteristic, both inde-pendent and dependent. Two philosophical contexts—Vaisesika and Nyāya schools—are here taken into account as possible anti-Cārvāka fault-finding points of view that spured Udbhatabhatta to reconsider the Cārvāka per-spective. Although we do not have so much textual material on this particular aspect of the ancient and medieval philosophical debate in India, it nonetheless can be supposed that Udbhatabhatta’s reformulation of the concept of cognition was a tentative response to the Vaisesika idea that cognition is not an attribute of the body, rather of the mind (which is here supposed to be eternal), and to the Naiyāyika perspective according to which cognition would be an attribute of an everlasting self. In the case of the Nyāya school, fortunately we have at our disposal the criticism put forward by Vātsyāyana against the materialistic conception of cognition during this time. By examining some Vātsyāyana’s objections, it will emerge that Udbhatabhatta’s idea of cognition really seems to have the aspect of a consistent answer to them, from a renewed materialistic point of view. (shrink)

The primary aim of this article is to provide a case study of textual hermeneutics in the context of Vedic literature. It will be shown how some interpretative pitfalls, into which contemporary translators have fallen, can be avoided if we broaden the perspective beyond the semantics of words and apply a principle of plausibility. The case study concerns the analysis of Ṛgveda 10.28, with special reference to the wildlife episodes depicted in verses 10cd-11ab. A few modern translations in Western languages (...) of 10cd are here considered. Some of them show that a principle of plausibility has been actually taken into account by their authors while approaching the text, albeit the result does not seem always entirely satisfactory. Some other translations seem not to carefully consider the broader context, therefore failing to convincingly make sense of the original text. After an introduction on the general subject of the hymn as it emerges from verses 1-9, i.e., the Vedic sacrifice and the subsequent consumption of the sacrificial offerings, arguments and textual evidence are provided in order to show how the reading of 10cd acquires a cogent and very plausible meaning if regarded in light of verse 11ab. (shrink)

The epistemic modal auxiliaries must and might are vehicles for expressing the force with which a proposition follows from some body of evidence or information. Standard approaches model these operators using quantificational modal logic, but probabilistic approaches are becoming increasingly influential. According to a traditional view, must is a maximally strong epistemic operator and might is a bare possibility one. A competing account—popular amongst proponents of a probabilisitic turn—says that, given a body of evidence, must \ entails that \\) is (...) high but non-maximal and might \ that \\) is significantly greater than 0. Drawing on several observations concerning the behavior of must, might and similar epistemic operators in evidential contexts, deductive inferences, downplaying and retractions scenarios, and expressions of epistemic tension, I argue that those two influential accounts have systematic descriptive shortcomings. To better make sense of their complex behavior, I propose instead a broadly Kratzerian account according to which must \ entails that \ = 1\) and might \ that \ > 0\), given a body of evidence and a set of normality assumptions about the world. From this perspective, must and might are vehicles for expressing a common mode of reasoning whereby we draw inferences from specific bits of evidence against a rich set of background assumptions—some of which we represent as defeasible—which capture our general expectations about the world. I will show that the predictions of this Kratzerian account can be substantially refined once it is combined with a specific yet independently motivated ‘grammatical’ approach to the computation of scalar implicatures. Finally, I discuss some implications of these results for more general discussions concerning the empirical and theoretical motivation to adopt a probabilisitic semantic framework. (shrink)

Esta entrevista se realizó en dos sesiones vía Zoom, cuyas fechas están ubicadas en agosto de 2021. La primera conversación que se tuvo consistió en que el filósofo Modesto Gómez Alonso brindara unas ideas panorámicas y reflexivas, las cuales se han colocado al inicio de cada resolución. Entretanto, en la segunda conversación, se partió de lo planteado anteriormente y de algunos apuntes que permitieron esbozar de una forma más contundente las respuestas. Todo este procedimiento sirvió para que se pudiera tratar (...) sobre la noción de la epistemología desde sus múltiples manifestaciones. Es por eso por lo que el filósofo Modesto Gómez recurrió a concepciones afines, como aquellas que proporcionan el conocimiento, al igual que buscó explicar con mayor detalle al citar a autores como Descartes, Sosa, entre otros. En ese sentido, esta entrevista tuvo el propósito de buscar las conexiones que existen de la Filosofía con la vida cotidiana en cuanto a que se indaga de las posibilidades de contribuir al conocimiento y contar con las herramientas adecuadas. (shrink)

An innovative perspective on the relationship between philosophy and the Bible. The early modern philosophers’ interpretations of the Scriptures allow deciphering the breeding ground of the freedom of philosophizing, the theological-political debate, and the new conception of nature.

This target article presents an integrated evolutionary model of the development of attachment and human reproductive strategies. It is argued that sex differences in attachment emerge in middle childhood, have adaptive significance in both children and adults, and are part of sex-specific life history strategies. Early psychosocial stress and insecure attachment act as cues of environmental risk, and tend to switch development towards reproductive strategies favoring current reproduction and higher mating effort. However, due to sex differences in life history trade-offs (...) between mating and parenting, insecure males tend to adopt avoidant strategies, whereas insecure females tend to adopt anxious/ambivalent strategies, which maximize investment from kin and mates. Females are expected to shift to avoidant patterns when environmental risk is more severe. Avoidant and ambivalent attachment patterns also have different adaptive values for boys and girls, in the context of same-sex competition in the peer group: in particular, the competitive and aggressive traits related to avoidant attachment can be favored as a status-seeking strategy for males. Finally, adrenarche is proposed as the endocrine mechanism underlying the reorganization of attachment in middle childhood, and the implications for the relationship between attachment and sexual development are explored. Sex differences in the development of attachment can be fruitfully integrated within the broader framework of adaptive plasticity in life history strategies, thus contributing to a coherent evolutionary theory of human development. (shrink)

Desde un análisis del Curso de teoría del conocimiento en este trabajo se afronta la peculiaridad del tiempo humano, especialmente del tiempo de la esencia humana, y se glosa la importancia de la virtud.

El artículo se concentra en un aspecto del diálogo platónico Ión, a saber, aquel que señala a la inspiración del poeta como un estado de posesión. Este estado es descrito como un proceso irracional que descalifica al poeta en su pretensión de dominar tanto alguna técnica como de poseer algún saber. La descripción de este estado se encuentra en el primer discurso de Sócrates en el citado diálogo y la intención del artículo es mostrar cómo esta descripción platónica de la (...) inspiración poética responde más a una invención que a una descripción veraz del proceso poético, a pesar de que Platón diga lo contrario. --- “The Poet’s Inspiration and the Platonic Fiction”. The paper is concerned with one aspect of the Platonic dialogue Ion, namely that which considers the poet’s inspiration as a state of possession. This state is described as an irrational process that undermines the poet’s claims to be master of some technique as well as knowledge. The description of this state is placed in Socrates’ first discourse in the abovementioned dialogue, and the intention of the paper is to show how this Platonic description of poetic inspiration is due more to an invention than to a true description of the poetic process, despite Plato’s opposing claims. (shrink)

In this paper we discuss in some depth the main theorems pertaining to Carnot’s theory of transversals, their initial reception by Servois, and the applications that Brianchon made of them to the theory of conic sections. The contributions of these authors brought the long-forgotten theorems of Desargues and Pascal fully to light, renewed the interest in synthetic geometry in France, and prepared the ground from which projective geometry later developed.

The argument against innatism at the heart of Cognitive Gadgets is provocative but premature, and is vitiated by dichotomous thinking, interpretive double standards, and evidence cherry-picking. I illustrate my criticism by addressing the heritability of imitation and mindreading, the relevance of twin studies, and the meaning of cross-cultural differences in theory of mind development. Reaching an integrative understanding of genetic inheritance, plasticity, and learning is a formidable task that demands a more nuanced evolutionary approach.

The Radical Machiavelli: Politics, Philosophy and Languageoffers a partial and even partisan reading of Machiavelli, whose thought continues to divide interpreters, forcing them to confront their responsibility as contemporary thinkers in a global society.

Denying the conclusion of a valid argument is not generally permissible if one suspends on one premise of the argument and believes the other premise. This can happen when one’s only critique of an argument is to undermine one premise. There is incoherence there. Here I examine how this is relevant to the debate on evolutionary debunking of our moral knowledge. I argue that one significant line of response to the debunker is unsuccessful: merely undermining the debunker’s empirical claim. It (...) is not rational to respond this way and believe one has moral knowledge. First I present evidence that prominent critics of the debunking argument merely undermine the debunker’s empirical claim. Then I argue for two premises: merely undermining a premise can only justify a middling amount of doubt towards the premise and we should have no more doubt about the conclusion of a valid argument than we do about the premises. Implications of the argument are explored. (shrink)