Should environmental, social, and economic sustainability be of primary concern to engineers? Should social justice be among these concerns? Although the deterioration of our natural environment and the increase in social injustices are among today’s most pressing and important issues, engineering codes of ethics and their paramountcy clause, which contains those values most important to engineering and to what it means to be an engineer, do not yet put either concept on a par with the safety, health, and welfare of (...) the public. This paper addresses a recent proposal by Michelfelder and Jones (2011) to include sustainability in the paramountcy clause as a way of rectifying the current disregard for social justice issues in the engineering codes. That proposal builds on a certain notion of sustainability that includes social justice as one of its dimensions and claims that social justice is a necessary condition for sustainability, not vice versa. The relationship between these concepts is discussed, and the original proposal is rejected. Drawing on insights developed throughout the paper, some suggestions are made as to how one should address the different requirements that theory and practice demand of the value taxonomy of professional codes of ethics. (shrink)

Could age be a valid criterion for rationing? In Just health, Norman Daniels argues that under certain circumstances age rationing is prudent, and therefore a morally permissible strategy to tackle the problem of resource scarcity. Crucial to his argument is the distinction between two problem-settings of intergenerational equity: equity among age groups and equity among birth cohorts. While fairness between age groups can involve unequal benefit treatment in different life stages, fairness between birth cohorts implies enjoying approximate equality in benefit (...) ratios. Although both questions of fairness are distinct, the resolution of the one depends on resolution of the other. In this paper, I investigate whether Daniels’ account of age rationing could be defended as a fair way of setting limits to healthcare entitlements. I will focus on two main points. First, I will consider whether the age group problem could be resolved without appealing to a conception of the good. Second, I will demonstrate that the connection between the age group problem and the birth cohort problem runs deeper than Daniels initially thought—and that it ultimately suggests a method for prioritisation in problem solving strategies. (shrink)

Although there are several provisions within the Nigerian legal framework that, however, address the issue of church attack, the state capacity to implement effective constitutional sanctioning on perpetrators of this heinous crime has always been found wanting or completely absent, leading to countless religious attacks on churches with seeming state consent. This study employs semi-structured interviews to draw data from affected families from Benue and Enugu States, Nigeria. The article explored their experiences. The study participants were recruited through snowball sampling (...) technique, and data were analysed thematically. The respondents stated that church killings or killing of Christians is rising because of the fact that perpetrators stand lower risk of detection and apprehension than other crimes. Also respondents interrogated that justification for the crime is land acquisition and religious intolerance. On the persistence of the challenge, all the 13 respondents stated that the crime seems to have state approval that has made it seemly impossible to tackle. The article calls for continuous inter-religious dialogue and intentional governmental responsibility in protecting lives of all persons living within the geographical enclave of Nigeria which is necessary for the common good. Closer understanding of other faiths and religions will help build bridges of peace and tolerance. The article also calls for the need to promote African traditional values, such as the value of sacredness of life, human respect and good neighbourliness.Contribution: This study initiated the discussions that will help the public understand the reason for continuous church attacks in Nigeria, what church crime connotes in the Nigerian context and its uniqueness from other crimes. These discussions sit quite well within the transdisciplinary religious perspective of this journal. (shrink)

Although there are several provisions within the Nigerian legal framework that, however, address the issue of church attack, the state capacity to implement effective constitutional sanctioning on perpetrators of this heinous crime has always been found wanting or completely absent, leading to countless religious attacks on churches with seeming state consent. This study employs semi-structured interviews to draw data from affected families from Benue and Enugu States, Nigeria. The article explored their experiences. The study participants were recruited through snowball sampling (...) technique, and data were analysed thematically. The respondents stated that church killings or killing of Christians is rising because of the fact that perpetrators stand lower risk of detection and apprehension than other crimes. Also respondents interrogated that justification for the crime is land acquisition and religious intolerance. On the persistence of the challenge, all the 13 respondents stated that the crime seems to have state approval that has made it seemly impossible to tackle. The article calls for continuous inter-religious dialogue and intentional governmental responsibility in protecting lives of all persons living within the geographical enclave of Nigeria which is necessary for the common good. Closer understanding of other faiths and religions will help build bridges of peace and tolerance. The article also calls for the need to promote African traditional values, such as the value of sacredness of life, human respect and good neighbourliness. Contribution: This study initiated the discussions that will help the public understand the reason for continuous church attacks in Nigeria, what church crime connotes in the Nigerian context and its uniqueness from other crimes. These discussions sit quite well within the transdisciplinary religious perspective of this journal. (shrink)

Relying on aesthetic testimony seems problematic. For instance, it seems problematic for me to simply believe or assert that The Velvet Underground's debut album The Velvet Underground and Nico (1964) is amazing solely because you have told me so, even though I know you to be an honest and competent music critic. But why? After all, there do not seem to be similar reservations regarding testimony from many other domains. In this paper, I will argue that relying on aesthetic testimony (...) seems problematic because we are attached to an ideal of aesthetic authenticity and feel that living up to this ideal is anathema to simply relying on aesthetic testimony. (shrink)

Digital literature is playing an increasingly important role in children's everyday lives and opening up new paths for family literacy and early childhood education. However, despite positive effects of electronic books and picture-book apps on vocabulary learning, early writing, or phonological awareness, research findings on early narrative skills are ambiguous. Particularly, there still is a research gap regarding how app materiality affects children's story understanding. Thus, based on the ViSAR model for picture-book app analysis and data stemming from 12 digital (...) reading dyads containing German monolingual 2- to 3-year-olds and their caregivers this study assessed the narrative potential of a commercial picture-book app and how this is used in interaction. Results of the media analysis showed that the app provides a high number of narrative animations. These animations could be used interactively to engage the child in the story. However, results of the interaction analysis showed that adult readers do not exploit this potential due to their strong concentration on operative prompts and instructions. Furthermore, an explorative analysis of the relation between adults' utterances and children's story comprehension provided preliminary indicators regarding how the length of reading duration and the number of utterances might relate to children's understanding of the story. Findings and methodological limitations of the study are discussed and combined didactically with practical recommendations on how to use narrative animations in interaction effectively. (shrink)

Recently, Jennifer Saul (“Racial Figleaves, the Shifting Boundaries of the Permissible, and the Rise of Donald Trump”, 2017; “Racist and Sexist Figleaves”, 2021) has explored the use of what she calls “figleaves” in the discourse on race and gender. Following Saul, a figleaf is an utterance that, for some portion of the audience, blocks the conclusion that some other utterance, R, or the person who uttered R is racist or sexist. Such racial and gender figleaves are pernicious, says Saul, because, (...) among other things, they can shift the boundaries of what is deemed acceptable to think or say. This paper expands on Saul’s picture in a threefold way: It is first argued that appeals to statistics can function as figleaves. It is then argued that—as far as figleaves go—there is reason to believe that statistics-as-figleaves are especially pernicious. Finally, the paper explores some strategies for counterspeech. (shrink)

Under which conditions are we epistemically justied to believe that what other people tell us is true? Traditionally, the answer has either been reductionist or anti-reductionist: Either our justication reduces to non-testimonial reasons, or we have a presumptive, though defeasible, right to believe what we are told. However, different cases pull in different directions. Intuitively, someone asking for the time is subject to different epistemic standards than a surgeon consulting a colleague before a dangerous operation. Following this line of thought, (...) this paper develops an account of testimonial justication that captures our reductionist as well as our anti-reductionist intuitions. It is argued that the speaker’s commitment to an epistemic norm, as well as the hearer’s understanding of that norm, gives the hearer a presumptive right to believe what she is told. However, this justication doesn’t apply to situations with high practical risks. Here, the hearer needs reductive reasons to believe that her interlocutor is especially qualied to give her the desired information. (shrink)

Although much technical and philosophical attention has been given to relevance logics, the notion of relevance itself is generally left at an intuitive level. It is difficult to find in the literature an explicit account of relevance in formal reasoning. In this article I offer a formal explication of the notion of relevance in deductive logic and argue that this notion has an interesting place in the study of classical logic. The main idea is that a premise is relevant to (...) an argument when it contributes to the validity of that argument. I then argue that the sequents which best embody this ideal of relevance are the so-called perfect sequents—that is, sequents which are valid but have no proper subsequents that are valid. Church’s theorem entails that there is no recursively axiomatizable proof-system that proves all and only the perfect sequents, so the project that emerges from studying perfection in classical logic is not one of finding a perfect subsystem of classical logic, but is rather a comparative study of classifying subsystems of classical logic according to how well they approximate the ideal of perfection. (shrink)

The problem of peer disagreement is to explain how you should respond when you and a peer have the same evidence bearing on some proposition and are equally competent epistemic agents, yet have reached opposite conclusions about. According to Christensen's Independence Thesis, in assessing the effect of your peer's disagreement, you must not rely on the reasoning behind your initial belief. I note that ‘the reasoning behind your initial belief’ can be given either a token or type reading. I argue (...) that the type reading is false, but the token reading is extremely weak. (shrink)

Which function is computed by a Turing machine will depend on how the symbols it manipulates are interpreted. Further, by invoking bizarre systems of notation it is easy to define Turing machines that compute textbook examples of uncomputable functions, such as the solution to the decision problem for first-order logic. Thus, the distinction between computable and uncomputable functions depends on the system of notation used. This raises the question: which systems of notation are the relevant ones for determining whether a (...) function is computable? These are the acceptable notations. I argue for a use criterion of acceptability: the acceptable notations for a domain of objects D\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathcal {D}}$$\end{document} are the notations that we can use for the usual D\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathcal {D}}$$\end{document}-activities. Acceptable notations for natural numbers are ones that we can count with. Acceptable notations for logical formulas are the ones that we can use in inference and logical analysis. And so on. This criterion makes computability a relative notion—whether a function is computable depends on which notations are acceptable, which is relative to our interests and abilities. I argue that this is not a problem, however, since there is independent reason for taking the extension of computable function to be relative to contingent facts. Similarly, the fact that the use criterion makes a mathematical distinction depend on practical concerns is also not a problem because it dovetails with similar phenomena in other areas of computability theory, namely the roles of notation in computation over real numbers and of Extended Church’s Thesis in complexity theory. (shrink)

Prosocial behaviour benefits another individual and occurs voluntarily. It may have a cognitive and a motivational component. The actor who benefits a recipient – for example by solving her/his problem must recognize the recipient’s goal and understand how to fulfil it and has to be motivated to support the recipient. In the current paper I will review recent studies on prosocial behavior in dogs and I will compare them to studies with primates. I will address the cognitive and motivational skills (...) required for the actor in order to support the recipient. I conclude that dogs and also chimpanzees display a number of prosocial behaviours, but there are remarkable differences. In contrast to humans, which have an outstanding biological predisposition to benefit others, dogs and chimpanzees only do so under certain conditions. (shrink)

This paper clarifies, revises, and extends the account of the transmission of truthmakers by core proofs that was set out in chap. 9 of Tennant. Brauer provided two kinds of example making clear the need for this. Unlike Brouwer’s counterexamples to excluded middle, the examples of Brauer that we are dealing with here establish the need for appeals to excluded middle when applying, to the problem of truthmaker-transmission, the already classical metalinguistic theory of model-relative evaluations.

The paper argues that Gareth Evans’ argument for transparent self-knowledge is based on a conflation of doxastic transparency with ascriptive transparency. Doxastic transparency means that belief about one’s own doxastic state, e.g., the belief that one thinks that it will rain, can be warranted by ordinary empirical observation, e.g., of the weather. In contrast, ascriptive transparency says that self-ascriptions of belief, e.g., “I believe it will rain”, can be warranted by such observation. We first show that the thesis of doxastic (...) transparency is ill-motivated and then offer a non-epistemic interpretation of ascriptive transparency by reference to the theory of explicit expressive acts: “I think it will rain” requires attendance to the weather because the utterance expresses a belief about the weather, not about ourselves. This will allow us to avoid what is often called “the puzzle of transparent self-knowledge” while remaining faithful to Evans’ linguistic observations. (shrink)

The paper argues that Gareth Evans’ argument for transparent self-knowledge is based on a conflation of doxastic transparency with ascriptive transparency. Doxastic transparency means that belief about one’s own doxastic state, e.g., the belief that one thinks that it will rain, can be warranted by ordinary empirical observation, e.g., of the weather. In contrast, ascriptive transparency says that self-ascriptions of belief, e.g., “I believe it will rain”, can be warranted by such observation. We first show that the thesis of doxastic (...) transparency is ill-motivated and then offer a non-epistemic interpretation of ascriptive transparency by reference to the theory of explicit expressive acts: “I think it will rain” requires attendance to the weather because the utterance expresses a belief about the weather, not about ourselves. This will allow us to avoid what is often called “the puzzle of transparent self-knowledge” while remaining faithful to Evans’ linguistic observations. (shrink)

The implicit commitment thesis is the claim that believing in a mathematical theory S carries an implicit commitment to further sentences not deductively entailed by the theory, such as the consistency sentence Con(S). I provide a new argument for this thesis based on the notion of mathematical certainty. I also reply to a recent argument by Walter Dean against the implicit commitment thesis, showing that my formulation of the thesis avoids the difficulties he raises.

The paper argues that Gareth Evans’ argument for transparent self-knowledge is based on a conflation of doxastic transparency with ascriptive transparency. Doxastic transparency means that belief about one’s own doxastic state, e.g., the belief that one thinks that it will rain, can be warranted by ordinary empirical observation, e.g., of the weather. In contrast, ascriptive transparency says that self-ascriptions of belief, e.g., “I believe it will rain”, can be warranted by such observation. We first show that the thesis of doxastic (...) transparency is ill-motivated and then offer a non-epistemic interpretation of ascriptive transparency by reference to the theory of explicit expressive acts: “I think it will rain” requires attendance to the weather because the utterance expresses a belief about the weather, not about ourselves. This will allow us to avoid what is often called “the puzzle of transparent self-knowledge” while remaining faithful to Evans’ linguistic observations. (shrink)

Not so long ago, it seemed the intellectual positions on globalization were clear, with advocates and opponents making their respective cases in decidedly contrasting terms. Recently, however, the fronts have shifted dramatically. The aim of this publication is to contribute philosophical depth to the debates on globalization conducted within various academic fields – principally by working out its normative dimensions. The interdisciplinary nature of this book’s contributors also serves to scientifically ground the ethical-philosophical discourse on global responsibility. Though by no (...) means exhaustive, the expansive scope of the works herein encompasses such other topics as the altering consciousness of space and time, and the phenomenon of globalization as a discourse, as an ideology and as a symbolic form. (shrink)

People partaking in a conversation can add to the common ground of said conversation by performing different speech acts. That is, they can influence which propositions are presumed to be shared among them. In this paper, I am going to apply the common ground framework to the phenomenon of epistemic injustice. In doing so, I am going to focus on two kindsof speech acts: making assertions and asking certain kinds of questions. And I am going to look at three varieties (...) of epistemic injustice: testimonial injustice, inquiring injus-tice and interpretative injustice.I am going to argue that what all these varieties of epistemic injustice have in common is that they unfairly inhibit the speaker’s ability to add to the common ground in the way intended by her. This in turn negatively affects which con-versational roles a speaker can play in a given conversation. Based on these results, I am going to end by looking at some of the harms that epistemic injustice inflicts upon its victims. (shrink)

This book reveals how, when, where and why vitalism and its relationship to new scientific theories, philosophies and concepts of energy became seminal from the fin de siècle until the Second World War for such Modernists as Sophie Tauber-Arp, Hugo Ball, Juliette Bisson, Eva Carrière, Salvador Dalì, Robert Delaunay, Marcel Duchamp, Edvard Munch, Picasso, Yves Tanguy, Gino Severini and John Cage. For them Vitalism entailed the conception of life as a constant process of metamorphosis impelled by the free flow of (...) energies, imaginings, intuition and memories, unconstrained by mechanistic materialism and chronometric imperatives, to generate what the philosopher Henri Bergson aptly called Creative Evolution. Following the three main dimensions of Vitalist Modernism, the first part of this book reveals how biovitalism at the fin de siècle entailed the pursuit of corporeal regeneration through absorption in raw nature, wholesome environments, aquatic therapies, electromagnetism, heliotherapy, modern sports, particularly rugby; water sports, the Olympic Games and physical culture to energize the human body and vitalize its life force. This is illuminated by artists as geoculturally diverse as Gustave Caillebotte, Thomas Eakins, Munch and Albert Gleizes. The second part illuminates how simultaneously vitalism became aligned with anthroposophy, esotericism, magnetism, occultism, parapsychology, spiritism, theosophy and what Bergson called "psychic states", alongside such new sciences as electromagnetism, radiology and the Fourth Dimension, as captured by such artists as Juliette Bisson, Giacomo Balla, Albert Besnard, Umberto Boccioni, Eva Carrière, John Gerrard Keulemans, László Mohology-Nagy, James Tissot, Albert von Schrenck Notzing and Picasso. During and after the devastation of the First World War, the third part explores how Vitalism, particularly Bergson's theory of becoming, became associated with Dadaist, Neo-Dadaist and Surrealist notions of amorality, atemporality, dysfunctionality, entropy, irrationality, inversion, negation and the nonsensical captured by Hans Arp, Charlie Chaplin, Theo Van Doesburg, Kazimir Malevich, Kurt Schwitters and Vladimir Tatlin alongside Cage's concept of Nothing. After investigating the widespread engagement with Bergson's philosophies, Vitalism and art by Anarchists, Marxists and Communists during and after the First World War, it concludes with the official rejection of Bergson and any form of Vitalism in the Soviet Union under Stalin. This book will be of vital interest to gallery, exhibition and museum curators and visitors plus readers and scholars working in art history, art theory, cultural studies, modernist studies, occult studies, European art and literature, health, histories of science, philosophy, psychology, sociology, sport studies, heritage studies, museum studies and curatorship. (shrink)

The theme of the church's impact on culture does not ignore, but rather rounds out the Chicago school's earlier and opposite preoccupation with the cultural-environmental factors in the development of the church. Brauer sees the socio-historical method which is identified with the Chicago school as "the first serious attempt in America to make church history a responsible scientific discipline at home in the university." These essays by faculty and alumni of Chicago Divinity School are presented chronologically and cover ancient, (...) medieval, reformation, and modern church history. Specifically, the essays cover: the use of the prefix auto- in early Christian Theology; the period of Constantine; the fourth and fifth century relation between Christianity and Judaeism; some medieval reforming critiques; the importance of the church in the rise of Moscow; a new line on the problem of the sources of conciliarism in the fifteenth century; and various reformation essays including one by J. T. McNeil, one on Anabaptism, one on religion and science in the reformation, and one on reformation humanism. The final essays include studies of Oliver Cromwell, Schleiermacher, Joseph Miloslav Hurban, and one on Harnack.--S. O. H. (shrink)

The theme of the church's impact on culture does not ignore, but rather rounds out the Chicago school's earlier and opposite preoccupation with the cultural-environmental factors in the development of the church. Brauer sees the socio-historical method which is identified with the Chicago school as "the first serious attempt in America to make church history a responsible scientific discipline at home in the university." These essays by faculty and alumni of Chicago Divinity School are presented chronologically and cover ancient, (...) medieval, reformation, and modern church history. Specifically, the essays cover: the use of the prefix auto- in early Christian Theology; the period of Constantine; the fourth and fifth century relation between Christianity and Judaeism; some medieval reforming critiques; the importance of the church in the rise of Moscow; a new line on the problem of the sources of conciliarism in the fifteenth century; and various reformation essays including one by J. T. McNeil, one on Anabaptism, one on religion and science in the reformation, and one on reformation humanism. The final essays include studies of Oliver Cromwell, Schleiermacher, Joseph Miloslav Hurban, and one on Harnack.--S. O. H. (shrink)

Bioethics has now become a burgeoning interdisciplinary field of scholarly investigation which has in the past decades migrated from bedside consultations to public policy debates and wider cultural and social consultations that privilege all discourse about everyday life issues. It has made exponential progress in addressing moral issues in science, technology and medicine in the world. In spite of this progress, core bioethics issues, approaches and values are still exclusively Western dominated and largely foreign to most African societies. Although medical (...) ethics has existed since the time of Hippocrates, in Africa, there is a noted sluggish growth and low prestige of ethics education as bioethics is not taught in most higher educational systems of learning, low understanding of its processes as researchers manifest a general lack of appreciation for bioethics and general ignorance characterize those involved in research about ethical practices. This is unfortunate, considering that various research that aim at finding solutions to the multiple problems affecting African societies and the need to address and assess these problems in ethical terms are of crucial importance to Africans. In this work, I argue that Africa lacks human, institutional, infrastructural capacities and a real African authenticity in bioethics. Additionally, African views on bioethics are neither sufficiently developed nor heard. Africans need to confront these current challenges of bioethics to their lives and communities and to develop African conceptions to incorporate African specificities and approaches. (shrink)

Charles W. Curtis is a prominent mathematician who has made important contributions to the field of representation theory. His textbooks in this field have been classics for a long time. In Pioneers of Representation Theory he has set out to present the historical development of the main ideas of the discipline, from the work of Georg Ferdinand Frobenius in the 1890s up to 1960. In addition to Frobenius, the book focuses mainly on three other “pioneers”: William Burnside, Issai Schur, and (...) Richard Brauer.Curtis states that his interest in the history of representation theory arose gradually, and jointly with that of Reiner, in the process of writing their textbooks. Thus, a main aim of the book is to show how the pioneers reached their important results while using only the mathematics then available to them. In order to do so, Curtis presents successive and thorough accounts of the works in which the new and seminal ideas of the pioneers were introduced and then developed. At the same time, however, he simplifies some of the original arguments by translating them into modern terminology.In an attempt to make the book appealing and accessible to a wider circle of potential readers, some of the necessary mathematics is explained. Thus Chapter 1 presents an introduction to the basic ideas and problems of nineteenth‐century algebra and number theory; later on, as the need arises, additional mathematical sections addressed to nonexperts are included. Of course, even this very clear presentation will be accessible only to readers with at least a graduate‐level knowledge of algebra.Curtis also attempts to provide some historical context. He is particularly concerned to clarify the main problems that the work of each of the mathematicians discussed here was originally meant to resolve. In a book of this kind this is surely one of the major benefits that the reader may expect to obtain.There are biographical sketches of the major figures involved, as well as additional information about other participants. Some illuminating documents are quoted, and Curtis supplies brief accounts of the mathematical traditions within which each of the pioneers was educated and worked. He acknowledges, however, that Pioneers of Representation Theory has only a limited claim as a work of historical research. He thus provides references to more historically oriented work that interested readers can consult. In particular, he mentions several articles by Thomas Hawkins; it should be stressed that much of Hawkins's work has recently been published in book form: Emergence of the Theory of Lie Groups: An Essay in the History of Mathematics, 1869–1926 . Curtis's and Hawkins's books complement each other in many important ways, and each should appeal to readers of the other.Charles Curtis has written an impressive, authoritative, and well‐informed book on a difficult subject. Mathematicians and historians of twentieth‐century mathematics with the relevant background will find it difficult but rewarding reading. Along the way, historiographical questions may arise. To what extent is it possible to translate, as Curtis does, the original proofs of the pioneers into more modern terminology and yet remain faithful to the sources? In most cases, however, it will require the technical expertise of the author himself to answer questions like this one properly. We can only hope that the firm starting point this book provides will lead Curtis to further historical research in this and related fields. (shrink)

Many philosophers, following Williamson (The Philosophical Review 105(4): 489–523, 1996), Williamson (Knowledge and its Limits, Oxford, Oxford Univer- sity Press, 2000), subscribe to the constitutive rule account of assertion (CRAA). They hold that the activity of asserting is constituted by a single constitutive rule of assertion. However, in recent work, Maitra (in: Brown & Cappelen (ed). Assertion: new philosophical essays, Oxford, Oxford University Press, 2011), Johnson (Acta Analytica 33(1): 51–67, 2018), and Kelp and Simion (Synthese 197(1): 125–137, 2020a), Kelp and (...) Simion (in: Goldberg (ed) The Oxford Handbook of Assertion, Oxford, Oxford University Press, 2020b) aim to show that, for all the most popular versions of the constitutive rule of assertion proposed in the literature, asserting is not an activity constituted by a single constitutive rule and that therefore CRAA is very likely false. To reach this conclusion, they all present a version of what can be dubbed the engagement condition objection. That is, they each propose a necessary condition on engaging in rule-constituted activities. Then they argue that, for all the most popular versions of the constitutive rule of assertion proposed in the literature, one can make assertions without satisfying this condition. In response, I present a counterexample that shows that the proposed engagement conditions lead to coun- terintuitive results, and I propose an alternative that better captures our intuitions. Then I argue that this alternative engagement condition is compatible with all the most popular versions of the constitutive rule of assertion. (shrink)

Bioethics has now become a burgeoning interdisciplinary field of scholarly investigation which has in the past decades migrated from bedside consultations to public policy debates and wider cultural and social consultations that privilege all discourse about everyday life issues. It has made exponential progress in addressing moral issues in science, technology and medicine in the world. In spite of this progress, core bioethics issues, approaches and values are still exclusively Western dominated and largely foreign to most African societies. Although medical (...) ethics has existed since the time of Hippocrates, in Africa, there is a noted sluggish growth and low prestige of ethics education as bioethics is not taught in most higher educational systems of learning, low understanding of its processes as researchers manifest a general lack of appreciation for bioethics and general ignorance characterize those involved in research about ethical practices. This is unfortunate, considering that various research that aim at finding solutions to the multiple problems affecting African societies and the need to address and assess these problems in ethical terms are of crucial importance to Africans. In this work, I argue that Africa lacks human, institutional, infrastructural capacities and a real African authenticity in bioethics. Additionally, African views on bioethics are neither sufficiently developed nor heard. Africans need to confront these current challenges of bioethics to their lives and communities and to develop African conceptions to incorporate African specificities and approaches. (shrink)

Biomedical research has made tremendous advances during the last decade in improving human health and well being. In spite of these advances, research has encountered serious emerging challenges as it moves across boarders and confronts different societies with different cultural practices, beliefs, moral thoughts and different values. A pervasive and perplexing issue affecting the current advances in research is the perception that research might end up exploiting populations unless it is conducted in the context of a strong ethical framework. Furthermore, (...) informed consent has increasingly become a thorny area for researchers when considering what should be done when introducing the process into a community, especially if the process might destroy the traditional value system and customs of the community. In this paper, I argue that community consent is an unethical process which should be subverted for community dialogue and community education in research in Africa. (shrink)

Modal logic has been used to analyze potential infinity and potentialism more generally. However, the standard analysis breaks down in cases of divergent possibilities, where there are two or more possibilities that can be individually realized but which are jointly incompatible. This paper has three aims. First, using the intuitionistic theory of choice sequences, we motivate the need for a modal analysis of divergent potentialism and explain the challenges this involves. Then, using Beth–Kripke semantics for intuitionistic logic, we overcome those (...) challenges. Finally, we apply our modal analysis of divergent potentialism to make choice sequences comprehensible in classical terms. (shrink)

African countries can at best be said to be underdeveloped. Graciously, however, they are said to be developing countries. But the indices of underdevelopment far outweigh the ones that designate them as developing. Compared to the developed world, African countries appear to be retrogressing by the day. This is worrisome. And many have wondered aloud the source of this precarious and parlous situation in which the Africans have found themselves. Some have identified it as a lack of true and committed (...) leadership; for others, it is the faulty constitutions, lack of respect for the rule of law, corruption, etc. Some solutions have been proffered on how to burst the shackles of African underdevelopment. But the more fundamental question is to ask whether there is anything in African man that resists development. Is the nature of the African man different from the rest of humanity? This paper reflects critically and analytically on human nature. It notes that Africans do not possess anything less of all that make up the contents of human nature. They simply have to begin their development process through the use of their indigenous economic model, just like the rest of the developed world did. (shrink)

Modal logic provides an elegant way to understand the notion of potential infinity. This raises the question of what the right modal logic is for reasoning about potential infinity. In this article I identify a choice point in determining the right modal logic: Can a potentially infinite collection ever be expanded in two mutually incompatible ways? If not, then the possible expansions are convergent; if so, then the possible expansions are branching. When possible expansions are convergent, the right modal logic (...) is S4.2, and a mirroring theorem due to Linnebo allows for a natural potentialist interpretation of mathematical discourse. When the possible expansions are branching, the right modal logic is S4. However, the usual box and diamond do not suffice to express everything the potentialist wants to express. I argue that the potentialist also needs an operator expressing that something will eventually happen in every possible expansion. I prove that the result of adding this operator to S4 makes the set of validities Pi-1-1 hard. This result makes it unlikely that there is any natural translation of ordinary mathematical discourse into the potentialist framework in the context of branching possibilities. (shrink)

In this paper I argue, that if it is metaphysically possible for it to have been the case that nothing existed, then it follows that the right modal logic cannot extend D, ruling out popular modal logics S4 and S5. I provisionally defend the claim that it is possible for nothing to have existed. I then consider the various ways of resisting the conclusion that the right modal logic is weaker than D.

Linnebo and Shapiro have recently given an analysis of potential infinity using modal logic. A key technical component of their account is to show that under a suitable translation ◊ of nonmodal language into modal language, nonmodal sentences ϕ 1, …, ϕ n entail ψ just in case ϕ 1 ◊, …, ϕ n ◊ entail ψ ◊ in the modal logic S4.2. Linnebo and Shapiro establish this result in nonfree logic. In this note I argue that their analysis of (...) potential infinity should be carried out in a free logic. I then extend their key theorems to the setting of negative free logic. (shrink)

Under what conditions are we justified in believing what people tell us? Traditionally, the answer has either been reductionist or anti-reductionist. Either our justification reduces to non-testimonial reasons, or we have a presumptive, though defeasible, right to believe what we are told. However, some philosophers have argued that we need to look beyond this dichotomy. Following this line of thought, this paper examines and criticizes a recent proposal by John Greco. According to Greco, testimony has two functions: (1) passing on (...) information within an epistemic community; (2) receiving information from an outside source. (1) calls for anti-reductionism, while (2) requires reductive reasons. In response to Greco, several cases are presented, showing that his position leads to counterintuitive consequences. In the light of this result, an alternative, risk-dependent, account is put forward. It is argued that the practical risks connected to receiving false information determine which epistemic treatment is appropriate. (shrink)

Modal logic provides an elegant way to understand the notion of potential infinity. This raises the question of what the right modal logic is for reasoning about potential infinity. In this article I identify a choice point in determining the right modal logic: Can a potentially infinite collection ever be expanded in two mutually incompatible ways? If not, then the possible expansions are convergent; if so, then the possible expansions are branching. When possible expansions are convergent, the right modal logic (...) is S4.2, and a mirroring theorem due to Linnebo allows for a natural potentialist interpretation of mathematical discourse. When the possible expansions are branching, the right modal logic is S4. However, the usual box and diamond do not suffice to express everything the potentialist wants to express. I argue that the potentialist also needs an operator expressing that something will eventually happen in every possible expansion. I prove that the result of adding this operator to S4 makes the set of validities Pi-1-1 hard. This result makes it unlikely that there is any natural translation of ordinary mathematical discourse into the potentialist framework in the context of branching possibilities. (shrink)

Free choice sequences play a key role in the intuitionistic theory of the continuum and especially in the theorems of intuitionistic analysis that conflict with classical analysis, leading many classical mathematicians to reject the concept of a free choice sequence. By treating free choice sequences as potentially infinite objects, however, they can be comfortably situated alongside classical analysis, allowing a rapprochement of these two mathematical traditions. Building on recent work on the modal analysis of potential infinity, I formulate a modal (...) theory of the free choice sequences known as lawless sequences. Intrinsically well-motivated axioms for lawless sequences are added to a background theory of classical second-order arithmetic, leading to a theory I call $MC_{LS}$. This theory interprets the standard intuitionistic theory of lawless sequences and is conservative over the classical background theory. (shrink)

En esta entrevista con el Prof. Dr. Daniel Brauer, uno de los investigadores que ha dedicado importantes estudios al pensamiento de Hegel y ha contribuido a su recepción en Argentina, se ponen de manifiesto algunos momentos significativos de su experiencia como docente e investigador en las últimas décadas.