While examples of bacteria benefiting eukaryotes are increasingly documented, studies examining effects of eukaryote hosts on microbial fitness are rare. Beneficial bacteria are often called “mutualistic” even if mutual reciprocity of benefits has not been demonstrated and despite the plausibility of other explanations for these microbes' beneficial effects on host fitness. Furthermore, beneficial bacteria often occur in diverse communities, making mutualism both empirically and conceptually difficult to demonstrate. We suggest reserving the terms “mutualism” and “parasitism” for pairwise interactions where the (...) relationship is largely independent of other species and can be verified by measuring the fitness effect experienced by both partners. In hosts with diverse microbial communities, we propose re‐formulating some of the essential questions of symbiosis research – e.g. concerning specificity, transmission mode, and common evolutionary fates – as questions of community ecology and ecosystem function, allowing important biological interactions to be investigated without making assumptions about reciprocity. Understanding the fitness of host‐associated bacteria is a crucial component of investigations into the role of microbes in eukaryote evolution. (shrink)

The question as to what makes a perfect Aristotelian syllogism a perfect one has long been discussed by Aristotelian scholars. G. Patzig was the first to point the way to a correct answer: it is the evidence of the logical necessity that is the special feature of perfect syllogisms. Patzig moreover claimed that the evidence of a perfect syllogism can be seen for Barbara in the transitivity of the a-relation. However, this explanation would give Barbara a different status over the (...) other three first figure syllogisms. I argue that, taking into account the role of the being-contained-as-in-a-whole formulation, transitivity can be seen to be present in all four first figure syllogisms. Using this wording will put the negation sign with the predicate, similar to the notation in modern predicate calculus. (shrink)

Philosophers and ethicists have long neglected moral questions that arise from our interaction with non-human animals. Most assumed that human beings have a higher moral status than other animals, and that it is therefore morally permissible to use non-human animals as a source of food, clothing, and entertainment, and for scientific purposes. In recent decades, however, that assumption has been challenged, and the moral status of non-human animals is now the subject of a lively and controversial academic debate.Advances in sciences, (...) particularly the advent of evolutionary theory, made us realize that human beings and other animals are more similar than different, and force us to rethink our place in nature. We are no longer justified in thinking of ourselves as the crown of creation. We now understand that we are just one species among others, and we must ask ourselves anew – with an open and critical mind and without bias – which values and principles should guide our interaction with non-human animals, and how we should weigh our interests against those of other animals.Recognizing this important trend in moral thinking, the Bangladesh Journal of Bioethics invited me to edit a special issue on animal ethics. The interest was so great that one issue became two, of which this is the first. I am grateful to Professor Shamima Parvin Lasker and Ms. Tahera Ahmed for giving me the opportunity to serve as a guest editor, and for their assistance during the editing process. I also thank our contributors for choosing this journal to publish their excellent work, and the reviewers for their insightful comments and suggestions.This, the first special issue on animal ethics contains the following five articles:Robin Attfield and Rebekah Humphreys (“Justice and Non-Human Animals”) challenge the widely held belief that non-human animals are not included within the scope of the principles of justice, and suggest that the interests of non-human animals sometimes take precedence over the interests of human beings. The implications of their argument for our interaction with other animals are profound: E.g., it is a matter of justice and fairness to prevent avoidable and unnecessary animal suffering, rather than a mere matter of compassion.Eric X. Qi (“Special Relations, Special Obligations, and Speciesism”) develops an account of the moral significance of special relations, and uses it to argue for a modest form of speciesism that steers a middle ground between anti-speciesism and crude speciesism. Unlike anti-speciesists, he maintains that species co-membership grounds special moral obligations among the members of the same species. In contrast to crude speciesists, however, he holds that our special obligations to fellow human beings do not warrant that we always attach more weight to their interests than to the comparable interests of non-human animals.Yamikani Ndasaukaand Grivas M. Kayange (“Existence and Needs: A case for the equal moral considerability of non-human animals”) argue that the existentialist view that human beings have a higher moral status than other animals rests on a weak foundation. They consider a number of arguments that have been made in support of this view and conclude that none of them holds up to critical scrutiny. They then suggest that human beings and other animals in fact deserve equal moral consideration, and – drawing from Martin Heidegger and Abraham Maslow – ground that claim in two important commonalities between them.Sreetama Chakraborty (“Animal Ethics: Beyond Neutrality, Universality, and Consistency”) explains how the postmodern approach to animal ethics departs from the traditional approach, particularly its emphasis on the principles of neutrality, universality, and consistency, and draws attention to the pernicious hierarchy of domination that separates human beings from other animals. Building on the insights of postmodernism, she takes first steps towards a new, non-anthropocentric paradigm, in the hope to achieve a sustainable balance between human interests and the interests of non-human animals.Gabriel Vidal Quiñones (“Singerian Vegetarianism and the Limits of Utilitarianism: A path towards a Meaning Ethics”) takes a critical look at Peter Singer’s utilitarian argument for vegetarianism, and argues that the conceptual resources of utilitarianism only allow for an incomplete moral understanding of our relationship with other animals. What is lacking, he suggests, is an ethical vision. He argues that, without an ethical vision, human action threatens to degenerate into mere automatism without meaning. He proposes a “meaning ethics” that he thinks is better equipped to help us decide how we ought to treat other animals.I hope you, dear reader, will enjoy reading through this remarkable collection of articles as much as I enjoyed putting it together. Maybe you will even be inspired to do some thinking of your own about issues of animal ethics and put your thoughts down on paper. If so, I sincerely hope that you will choose the Bangladesh Journal of Bioethics to publish your article.Warm regards and best wishes for the new year. (shrink)

I try to show that Aristotle does not restrict 'praxis' to those activities which have their end in themselves. NE VI 5, 1140b6-7 need not to be taken as an argument in favour of the restricted interpretation: the wording of the passage is compatible with the interpretation that the end of a praxis is (another) praxis (e.g. eupraxia), the end of a poiesis on the other hand is never a poiesis. This interpretation fits better the use of 'praxis' throughout the (...) NE. MM A 34, 1197a4-12 is discarded since the MM is not written by Aristotle. Next I discuss the relation between the verbs 'prattein' and 'poiein' on the one hand and the corresponding nouns 'poiesis' and 'praxis' on the other, in order to determine their exact meaning. To conclude, Aristotle's distinctions are compared to certain tenets of H. Arendt in her 'Vita Activa'. (shrink)

Why does Aristotle not use the copulative wording for categorical propositions, but instead the clumsier terminological formulations (e. g. the B belongs to every A) in his syllogistic? The proposed explanations by Alexander, Lukasiewicz and Patzig: Aristotle wants to make clear the difference between subject and predicate, seems to be insufficient. In quantified categorical propositions, this difference is always sufficiently clear by the use of the pronouns going with the subject expressions. Aristotle opts for the terminological wording because in premiss (...) pairs of figures two and three he can thus suppress the middle term in one of the premisses and connect the major and minor term, using connecting particles. This renders the syllogisms more transparent. Had he used the copulative wording instead, he would have run into difficulties, in particular with o-propositions among the premisses (i. e. in Baroco and Bocardo) because in these cases the pronoun expressing the quantification would have to go with the subject term, the negation with the predicate. (shrink)

The article demonstrates that the dominance approach—often used for the measurement of welfare in a population in which there are different household types (see e.g., Atkinson and Bourguignon, Arrow and the foundations of the theory of economic policy, 350–370, 1987)—can be based on explicit value judgments on the households’ living standard. We define living standard by equivalent income (functions) and consider classes of inequality averse social welfare functions: Welfare increases if the inequality of living standard is decreased. In this framework, (...) we suggest three new dominance criteria and obtain characterizations of second degree stochastic dominance and of two criteria proposed by Bourguignon (Journal of Econometrics 42:67–80, 1989). (shrink)

Kahn tries to do justice to the contribution Pythagoras and his followers might have had for Greek science. Thus he downplays the religious figure so prominent with Burkert's groundbreaking study "Lore and Science". He sees the transformation Pythagorean ideas may have undergone in Plato's Academy as pivotal for the developments of Pythagoreanism in later antiquity as well as in Renaissance speculation, e. g. Kepler. The book offers a good overview for the history of Pythagoreanism from its founder to modern times.

In an earlier article (s. J Gen Philos Sci 40:341-355, 2009), I have rejected an interpretation of Aristotle's syllogistic which (since Patzig) is predominant in the literature on Aristotle, but wrong in my view. According to this interpretation, the distinguishing feature of perfect syllogisms is their being evident. Theodor Ebert has attempted to defend this interpretation by means of objections (s. J Gen Philos Sci 40:357-365, 2009) which I will try to refute in part [1] of the following article. (...) I want to show that (1) according to Aristotle's Prior Analytics perfect and imperfect syllogisms do not differ by their being evident, but by the reason for their being evident, (2) Aristotle uses the same words to denote proofs of the validity of perfect and imperfect syllogisms („apodeixis”, "deiknusthai" etc.), (3) accordingly, Aristotle defines perfect syllogisms not as being evident, but as "requiring nothing beyond the things taken in order to make the necessity evident", i.e. as not "requiring one or more things that are necessary because of the terms assumed, but that have not been taken among the propositions" (APr. I. 1), (4) the proofs by which the validity of perfect assertoric syllogisms can be shown according to APr. I. 4 are based on the Dictum de omni et nullo, (5) the fact that Aristotle describes these proofs only in rough outlines corresponds to the fact that his proofs of the validity of other fundamental rules are likewise produced in rough outlines, e.g. his proof of the validity of conversio simplex in APr. I. 2, which usually has been misunderstood (also by Ebert): (6) Aristotle does not prove the convertibility of E-sentences by presupposing the convertibility of I-sentences; only the reverse is true. (shrink)

A co-authored article with Roy T. Cook forthcoming in a special edition on the Caesar Problem of the journal Dialectica. We argue against the appeal to equivalence classes in resolving the Caesar Problem.

A history of divining rods Content Type Journal Article Category Book Review Pages 1-3 DOI 10.1007/s11016-011-9565-x Authors Martina Kölbl-Ebert, Jura-Museum, Burgstrasse 19, 85072 Eichstätt, Germany Journal Metascience Online ISSN 1467-9981 Print ISSN 0815-0796.

This is an introductory survey article to the philosophy of mathematics. I provide a detailed account of what Benacerraf’s problem is and then discuss in general terms four different approaches to ….

"Der vorliegende Band vereinigt die Beitrèage des Symposiums zur Logik der Stoiker und ihrer Vorlèaufer, das vom 1.-7.9.1991 in Bamberg stattfand"--P. [7].

In 1885, Georg Cantor published his review of Gottlob Frege's Grundlagen der Arithmetik . In this essay, we provide its first English translation together with an introductory note. We also provide a translation of a note by Ernst Zermelo on Cantor's review, and a new translation of Frege's brief response to Cantor. In recent years, it has become philosophical folklore that Cantor's 1885 review of Frege's Grundlagen already contained a warning to Frege. This warning is said to concern the defectiveness (...) of Frege's notion of extension. The exact scope of such speculations varies and sometimes extends as far as crediting Cantor with an early hunch of the paradoxical nature of Frege's notion of extension. William Tait goes even further and deems Frege 'reckless' for having missed Cantor's explicit warning regarding the notion of extension. As such, Cantor's purported inkling would have predated the discovery of the Russell-Zermelo paradox by almost two decades. In our introductory essay, we discuss this alleged implicit (or even explicit) warning, separating two issues: first, whether the most natural reading of Cantor's criticism provides an indication that the notion of extension is defective; second, whether there are other ways of understanding Cantor that support such an interpretation and can serve as a precisification of Cantor's presumed warning. (shrink)

In this paper, we present the results of two surveys that investigate subjects’ judgments about what can be known or justifiably believed about lottery outcomes on the basis of statistical evidence, testimonial evidence, and “mixed” evidence, while considering possible anchoring and priming effects. We discuss these results in light of seven distinct hypotheses that capture various claims made by philosophers about lay people’s lottery judgments. We conclude by summarizing the main findings, pointing to future research, and comparing our findings to (...) recent studies by Turri and Friedman. (shrink)

In this paper, we present a formal recipe that Frege followed in his magnum opus “Grundgesetze der Arithmetik” when formulating his definitions. This recipe is not explicitly mentioned as such by Frege, but we will offer strong reasons to believe that Frege applied it in developing the formal material of Grundgesetze. We then show that a version of Basic Law V plays a fundamental role in Frege’s recipe and, in what follows, we will explicate what exactly this role is and (...) explain how it differs from the role played by extensions in his earlier book “Die Grundlagen der Arithmetik”. Lastly, we will demonstrate that this hitherto neglected yet foundational aspect of Frege’s use of Basic Law V helps to resolve a number of important interpretative challenges in recent Frege scholarship, while also shedding light on some important differences between Frege’s logicism and recent neo-logicist approaches to the foundations of mathematics. (shrink)

What is the relation between ‘full’ or ‘outright’ belief and the various levels of confidence that agents can have in the propositions that concern them? This paper argues for a new answer to this question. Decision theory implies that in making decisions, rational agents must treat certain propositions as though they were completely certain; but on most forms of decision theory, these propositions are not ones for which any finite agent could have maximal justification – the agent will clearly have (...) less justification for these propositions than for elementary logical truths. Thus, every adequate model of a finite rational agent's belief‐system must involve two set of credences – theoretical credences and practical credences . A full or outright belief in p can be defined as the state of being stably disposed to assign a practical credence of 1 to p, for all normal practical purposes. This definition allows for a kind of reconciliation between the pragmatist and intellectualist approaches in epistemology. (shrink)

GREAT EMPIRES may come and go, but, like the tides, they leave behind a tangled assortment of treasures and trash. In the case of the British Empire, this included much that one might admire, but also a British Protestant morality that was codified in laws that persist to this day. Section 377 of the colonial Penal Code is a striking example. It classed consensual oral and anal sex as “carnal intercourse against the order of nature” and made it a crime (...) punishable with imprisonment for life. When the British administrators withdrew, they took their soldiers, but left their law books behind. Section 377 was recently repealed in India, but it is still very much on the books in Bangladesh. (shrink)

The notion of risk plays a central role in economics, finance, health, psychology, law and elsewhere, and is prevalent in managing challenges and resources in day-to-day life. In recent work, Duncan Pritchard (2015, 2016) has argued against the orthodox probabilistic conception of risk on which the risk of a hypothetical scenario is determined by how probable it is, and in favour of a modal conception on which the risk of a hypothetical scenario is determined by how modally close it is. (...) In this article, we use Pritchard’s discussion as a springboard for a more wide-ranging discussion of the notion of risk. We introduce three different conceptions of risk: the standard probabilistic conception, Pritchard’s modal conception, and a normalcy conception that is new (though it has some precursors in the psychological literature on risk perception). Ultimately, we argue that the modal conception is ill-suited to the roles that a notion of risk is required to play and explore the prospects for a form of pluralism about risk, embracing both the probabilistic and the normalcy conceptions. (shrink)

It has been proposed that inferring personal authorship for an event gives rise to intentional binding, a perceptual illusion in which one’s action and inferred effect seem closer in time than they otherwise would . Using a novel, naturalistic paradigm, we conducted two experiments to test this hypothesis and examine the relationship between binding and self-reported authorship. In both experiments, an important authorship indicator – consistency between one’s action and a subsequent event – was manipulated, and its effects on binding (...) and self-reported authorship were measured. Results showed that action-event consistency enhanced both binding and self-reported authorship, supporting the hypothesis that binding arises from an inference of authorship. At the same time, evidence for a dissociation emerged, with consistency having a more robust effect on self-reports than on binding. Taken together, these results suggest that binding and self-reports reveal different aspects of the sense of authorship. (shrink)

Mountaineering is a dangerous activity. For many mountaineers, part of its very attraction is the risk, the thrill of danger. Yet mountaineers are often regarded as reckless or even irresponsible for risking their lives. In this paper, we offer a defence of risk-taking in mountaineering. Our discussion is organised around the fact that mountaineers and non-mountaineers often disagree about how risky mountaineering really is. We hope to cast some light on the nature of this disagreement – and to argue that (...) mountaineering may actually be worthwhile because of the risks it involves. Section 1 introduces the disagreement and, in doing so, separates out several different notions of risk. Sections 2–4 then consider some explanations of the disagreement, showing how a variety of phenomena can skew people's risk judgements. Section 5 then surveys some recent statistics, to see whether these illuminate how risky mountaineering is. In light of these considerations, however, we suggest that the disagreement is best framed not simply in terms of how risky mountaineering is but whether the risks it does involve are justified. The remainder of the paper, sections 6–9, argues that risk-taking in mountaineering often is justified – and, moreover, that mountaineering can itself be justified by and because of the risks it involves. (shrink)

This is the first complete English translation of Gottlob Frege's Grundgesetze der Arithmetik, with introduction and annotation. The importance of Frege's ideas within contemporary philosophy would be hard to exaggerate. He was, to all intents and purposes, the inventor of mathematical logic, and the influence exerted on modern philosophy of language and logic, and indeed on general epistemology, by the philosophical framework.

This paper introduces and evaluates two contemporary approaches of neo-logicism. Our aim is to highlight the differences between these two neo-logicist programmes and clarify what each projects attempts to achieve. To this end, we first introduce the programme of the Scottish school – as defended by Bob Hale and Crispin Wright1 which we believe to be a..

The existence of predatory animals is a problem in animal ethics that is often not taken as seriously as it should be. We show that it reveals a weakness in Tom Regan's theory of animal rights that also becomes apparent in his treatment of innocent human threats. We show that there are cases in which Regan's justice-prevails-approach to morality implies a duty not to assist the jeopardized, contrary to his own moral beliefs. While a modified account of animal rights that (...) recognizes the moral patient as a kind of entity that can violate moral rights avoids this counterintuitive conclusion, it makes non-human predation a rights issue that morally ought to be subjected to human regulation. Jennifer Everett, Lori Gruen and other animal advocates base their treatment of predation in part on Regan's theory and run into similar problems, demonstrating the need to radically rethink the foundations of the animal rights movement. We suggest to those who, like us, find it less plausible to introduce morality to the wild than to reject the concept of rights that makes this move necessary to read our criticism either as a modus tollens argument and reject non-human animal rights altogether or as motivating a libertarian-ish theory of animal rights. (shrink)

Responsible business conduct (RBC)—the corporate activities and initiatives that proactively address corporate involvement in human rights, environmental, and governance threats—has become an increasingly used means to counteract and prevent adverse effects of global businesses. Unlike other business sectors whose adverse impacts and RBC efforts (or lack thereof) are well documented, a comprehensive understanding of the state of commodity trading (CT), has been missing. In response, this paper uses a multidisciplinary literature review to provide an integrative understanding of the current state (...) of research on the relationship between CT and RBC. Based on a review of 131 articles, we advance a granular understanding of the current and prospective role of commodity traders in RBC by grouping extant research into three overarching themes: (1) industry self-regulation and co-regulatory initiatives, (2) government-led regulatory initiatives and policy responses, and (3) company-level management strategies impacting RBC practices. In addition to illustrating the themes through existing research and identifying gaps along the overarching themes, we use our literature review to suggest avenues for future research. The paper’s overarching contribution is, first, to synthesize previously fragmented findings into a coherent framework of CT and RBC. And second, to offer guidance on how scholarship in this important domain can be developed into a more mature, legitimate and practical stream of research. (shrink)

We bring out syntactic and semantic similarities of two types of conditionals with fronted antecedents [normal indicative conditionals and biscuit conditionals ] and two types of left dislocation constructions in German, which mark two types of topicality. On the basis of these similarities we argue that NCs and BCs are aboutness topics and relevance topics, respectively. Our analysis extends the approach to aboutness topicality of Endriss to relevance topics to derive the semantic and pragmatic contribution of left-dislocated DPs and applies (...) it to an analysis of conditionals as pluralities of possible worlds. We show how this uniform approach to the interpretation of topicality accounts for the nominal left dislocation constructions as well as for the semantic and pragmatic effects observed in connection with the two types of conditionals. We furthermore discuss the potential of our proposal to deal with subjunctive biscuit conditionals, if-clauses modifying speech acts different from assertions, conditionals with right-dislocated if-clauses, and nested conditionals. (shrink)

Secular arguments for equal and exclusively human worth generally tend to follow one of two strategies. One, which has recently gained renewed attention because of a novel argument by S. Matthew Liao, aims to directly ground worth in an intrinsic property that all humans have in common, whereas the other concedes that there is no morally relevant intrinsic difference between all humans and all other animals, and instead appeals to the membership of all humans in a special kind. In this (...) article, I argue that both strategies necessitate drawing a line that is both arbitrary and implausibly opens a moral gulf between individuals whose difference from one another in terms of empirical reality is entirely unremarkable, providing reasons to reject them that go beyond the standard objections in the literature. I conclude that, if all humans are to be included in the community of equals, we must lay to rest the idea that we can do so without also including a wide range of non-human animals. (shrink)

This is a big-picture discussion of an important implication of Darwinism for ethics. I argue that there is a misfit between our scientific view of the natural world and the view, still dominant in academic philosophy and wider society alike, that there is a discrete hierarchy of moral status among conscious beings. I will suggest that the clear line of traditional morality – between human beings and other animals – is a remnant of an obsolete moral outlook, not least because (...) it has no counterpart in empirical reality, and I will invite the reader to think, with me, about tenable alternatives. (shrink)