There are several three-valued logical systems that form a scattered landscape, even if all reasonable connectives in three-valued logics can be derived from a few of them. Most papers on this subject neglect the issue of the relevance of such logics in relation with the intended meaning of the third truth-value. Here, we focus on the case where the third truth-value means unknown, as suggested by Kleene. Under such an understanding, we show that any truth-qualified formula in a large range (...) of three-valued logics can be translated into KD as a modal formula of depth 1, with modalities in front of literals only, while preserving all tautologies and inference rules of the original three-valued logic. This simple information logic is a two-tiered classical propositional logic with simple semantics in terms of epistemic states understood as subsets of classical interpretations. We study in particular the translations of Kleene, Gödel, ᴌukasiewicz and Nelson logics. We show that Priest’s logic of paradox, closely connected to Kleene’s, can also be translated into our modal setting, simply by exchanging the modalities possible and necessary. Our work enables the precise expressive power of three-valued logics to be laid bare for the purpose of uncertainty management. (shrink)

A couple of decades after becoming a major area of both public and philosophical concern, animal ethics continues its inroads into main- stream consciousness. Increasingly, philosophers, ethicists, professionals who use animals, and the broader public confront specific ethical issues regarding human use of animals as well as more fundamental questions about animals’ moral status. A parallel, related development is the explo- sion of interest in animals’ mental lives, as seen in exciting new work in cognitive ethology and in the plethora (...) of movies, television commercials, and popular books featuring apparently intelligent animals. -/- As we approach the turn of the twenty-first century, philosophical animal ethics is an area of both increasing diversity and unrealized poten- tial – a thesis supported by this essay as a whole. Following up on an earlier philosophical review of animal ethics (but without that review’s focus on animal research), the present article provides an updated narrative – one that offers some perspective on where we have been, a more detailed account of where we are, and a projection of where we might go. Each of the three major sections offers material that one is unlikely to find in other reviews of animal ethics: the first by viewing familiar territory in a different light (advancing the thesis that the utility-versus-rights debate in animal ethics is much less important than is generally thought); the second by reviewing major recent works that are not very well-known (at least to nonspecialists); and the third by identifying important issues that have been largely neglected. (shrink)

The Units of Selection debate is a dispute about the causes of population change. I argue that it is generated by a particular `dynamical'' interpretation of natural selection theory, according to which natural selection causes differential survival and reproduction of individuals and natural selection explanations cite these causes. I argue that the dynamical interpretation is mistaken and offer in outline an alternative, `statistical'' interpretation, according to which natural selection theory is a fancy kind of `bookkeeping''. It explains by citing the (...) statistical structure of a population and not by citing the causes of survival and reproduction. From the perspective of the statistical interpretation there is no substantive Units of Selection issue. (shrink)

We investigate the semantics of the logical systems obtained by introducing the modalities and into the family of substructural implication logics (including relevant, linear and intuitionistic implication). Then, in the spirit of the LDS (Labelled Deductive Systems) methodology, we "import" this semantics into the classical proof system KE. This leads to the formulation of a uniform labelled refutation system for the new logics which is a natural extension of a system for substructural implication developed by the first two authors in (...) a previous paper. (shrink)

In locating friendly fire in contemporary philosophy of religion, D.Z. Phillips shows that more harm can be done to religion by its philosophical defenders than by its philosophical despisers. Friendly fire is the result of an uncritical acceptance of empiricism, and Phillips argues that we need to examine critically the claims that individual consciousness is the necessary starting point from which we have to argue: for the existence of an external world and the reality of God; that God is a (...) person without a body, a pure consciousness; and that to assent to a religious belief is essentially to assign a truth value to a proposition independent of any confessional context. When these products of friendly fire are avoided, we arrive at a new understanding of belief, trust and the soul, and refuse to say more or less than we know about the realities of human life in the service of religious apologetics. (shrink)

What has come to be known as “a priori physicalism” is the thesis, roughly, that the non-physical truths in the actual world can be deduced a priori from a complete physical description of the actual world. To many contemporary philosophers, a priori physicalism seems extremely implausible. In this paper I distinguish two kinds of a priori physicalism. One sort – strict a priori physicalism – I reject as both unmotivated and implausible. The other sort – liberal a priori physicalism – (...) I argue is both motivated and plausible. This variety of a priori physicalism insists that the necessitation of non-physical truths by the physical facts must be underwritten in a certain fashion by a priori knowledge, but the a priori knowledge need not amount to a simple deduction of the non-physical truths from a complete physical description of the world. Further, this sort of liberal a priori physicalism has the advantage that it offers hope for a genuinely satisfying account of how the physical facts manage to necessitate the facts about phenomenal consciousness – thereby in effect solving the “hard problem” of consciousness. The first half of the paper sets out the motivation for liberal a priori physicalism and its superiority to the strict version; the second half presents one strategy available to the liberal a priori physicalist for showing how consciousness can be accommodated in a purely physical world. (shrink)

We report the results of a randomized trial to assess the impact of an innovative ethics curriculum on the knowledge and confidence of 85 medical house officers in a university hospital programme, as well as their responses to a simulated clinical case. Twenty-five per cent of the house officers received a lecture series, 25 per cent received lectures and case conferences, with an ethicist in attendance, and 50 per cent served as controls. A post-intervention questionnaire was administered. Knowledge scores did (...) not differ among the groups. Confidence regarding ethical issues was significantly greater in the aggregate intervention group compared to the control group. Confidence regarding procedural issues related to ethics was significantly higher for the EI group than for the controls. Responses to a simulated case showed that significantly fewer house officers in the EI group would intubate a patient for whom such therapy would be futile. We conclude that ethics education can have an impact on house officers' confidence and their responses to a simulated case, and that the EI was more effective than the LI. Such results have implications regarding the implementation of ethics education during residency. (shrink)

This volume commemorates the centenary of Logical Investigations by subjecting the work to a comprehensive critical analysis. It contains new contributions by leading scholars addressing some of the most central analyses to be found in the book.

Critical factors that appear to encourage vocal development in humans are altriciality and long immaturity. Hominid infants appear to have evolved a specific tendency to use elaborate vocalization as a means of soliciting long-term investment from caregivers. The development of such vocal capacity provides necessary infrastructure for language development across human life history.

A common intuition about evidence is that if data x have been used to construct a hypothesis H, then x should not be used again in support of H. It is no surprise that x fits H, if H was deliberately constructed to accord with x. The question of when and why we should avoid such “double-counting” continues to be debated in philosophy and statistics. It arises as a prohibition against data mining, hunting for significance, tuning on the signal, and (...) ad hoc hypotheses, and as a preference for predesignated hypotheses and “surprising” predictions. I have argued that it is the severity or probativeness of the test—or lack of it—that should determine whether a double-use of data is admissible. I examine a number of surprising ambiguities and unexpected facts that continue to bedevil this debate. (shrink)

The role of the environment in producing the correct classical limit in the Bohm interpretation of quantum mechanics is investigated, in the context of a model of quantum Brownian motion. One of the effects of the interaction is to produce a rapid approximate diagonalisation of the reduced density matrix in the position representation. This effect is, by itself, insufficient to produce generically quasi-classical behaviour of the Bohmian trajectory. However, it is shown that, if the system particle is initially in an (...) approximate energy eigenstate, then there is a tendency for the Bohmian trajectory to become approximately classical on a longer time-scale. The relationship between this phenomenon and the behaviour of the Wigner function post-decoherence is discussed. (shrink)

Contributed papers on concept of False and Indivisibles (Philosophy) in Hindu philosophy presented at Seminar organized by Department of Advaita Vedanta, Rāṣṭrīyasaṃskr̥tavidyāpīṭham, Tirupati from December 31, 2005 to January 01, 2006).

In 1987 Jerrold Levinson wrote, in a review of George Dickie's _The Art Circle_, that in reading it he felt 'caught in a kind of aesthetic time warp'. I had the same feeling, and indeed have the same feeling when I read papers published since on Dickie's theory. A recent criticism in this journal by Oswald Hanfling is a case in point. To be fair, Hanfling explicit states that he is discussing the 1974 version of the theory rather than Dickie's (...) current views. However, this weakens the paper as a contribution to the current debate. Dickie no longer advocates the 1974 theory, as opposed to the 1984 version. Hanfling also directs most of his argument against the second disjunct of that definition, largely ignoring the first. furthermore, following recent work on the theory by others, Dickie's theory has become a more protean creature than Hanfling suppose. Criticism are rarely decisive; what works against one version of the theory is ineffective against another. In this paper I will argue that the theory as standardly conceived can be broken down into two logically independent parts. Once this is done, the objections current in the literature are not decisive. I will then attempt to evaluate what I take to be the improved version. (shrink)

The Kenya-born philosopher Henry Odera Oruka (1944 - 1995) persistently, and consistently, made proposals for a different moral approach to addressing, and possibly solving, some of the root causes of human conflicts across the world. I will call it “taking suffering seriously” as the basis of his idea of a global-level collective justice which, for him, raised the idea of the ethics of care to the level of global justice. I propose in this paper to show that this concern can (...) be found to be pervasive in Oruka’s works, connecting many of his well known positions as well as less known ones, and to discuss its philosophical merits. (shrink)

In his 'The Disorder of Things' John Dupré presents an objection to reductionism which I call the 'anti-essentialist objection': it is that reductionism requires essentialism, and essentialism is false. I unpack the objection and assess its cogency. Once the objection is clearly in view, it is likely to appeal to those who think conceptual analysis a bankrupt project. I offer on behalf of the reductionist two strategies for responding, one which seeks to rehabilitate conceptual analysis and one (more concessive) which (...) avoids commitment to any such analysis. (shrink)

What has been the fate of Christianity since Nietzsche's famous announcement of the "death of God"? What is the possibility of religion, specifically Christianity, thriving in our postmodern era? In this provocative new book, Gianni Vattimo, leading Italian philosopher, politician, and framer of the European constitution, addresses these critical questions. When Vattimo was asked by a former teacher if he still believed in God, his reply was, "Well, I believe that I believe." This paradoxical declaration of faith serves as the (...) foundation for a brilliant exposition on Christianity in the new millennium -- an age characterized by a deep uncertainty of opinion -- and a personal account of how Vattimo himself recovered his faith through Nietzsche and Heidegger. He first argues that secularization is in fact the fulfillment of the central Christian message, and prepares us for a new mode of Christianity. He then explains that Nietzsche's thesis concerns only the "moral god" and leaves room for the emergence of "new gods." Third, Vattimo claims that the postmodern condition of fragmentation, anti-Eurocentrism, and postcolonialism can be usefully understood in light of Joachim of Fiore's thesis concerning the "Spiritual Age" of history. Finally, Vattimo argues for the idea of "weak thought." Because philosophy in the postmetaphysical age can only acknowledge that "all is interpretation," that the "real" is always relative and not the hard and fast "truth" we once thought it to be, contemporary thought must recognize itself and its claims as "weak" as opposed to "strong" foundationalist claims of the metaphysical past. Vattimo concludes that these factors make it possible for religion and God to become a serious topic for philosophy again, and that philosophy should now formally engage religion. (shrink)

In this paper I discuss the topics of mechanism and algorithmicity. I emphasise that a characterisation of algorithmicity such as the Turing machine is iterative; and I argue that if the human mind can solve problems that no Turing machine can, the mind must depend on some non-iterative principle — in fact, Cantor's second principle of generation, a principle of the actual infinite rather than the potential infinite of Turing machines. But as there has been theorisation that all physical systems (...) can be represented by Turing machines, I investigate claims that seem to contradict this: specifically, claims that there are noncomputable phenomena. One conclusion I reach is that if it is believed that the human mind is more than a Turing machine, a belief in a kind of Cartesian dualist gulf between the mental and the physical is concomitant. (shrink)

A method for constructing continua of logics squeezed between some intermediate predicate logics, developed by Suzuki [8], is modified and applied to intervals of the form [L, L+ ¬¬S], where Lis a predicate logic, Sis a closed predicate formula. This solves one of the problems from Suzuki's paper.

In «The Normativity of Meaning», Eric Gampel argues that the capacity to justify a linguistic usage is essential to meaning and suggests that this fact entails that naturalistic theories of meaning must take a non-reductive form if they are to be viable. I will argue that reductive and non-reductive naturalisms stand or fall together in the face of Gampel's argument that meaning plays an essential justificatory role. I will further argue that, if they fall, the lesson to be learned is (...) not that we should avoid reductionism, but rather, that we should steer clear of physicalism in our meaning theory; if Gampel's argument is cogent, any theory of meaning will have to make reference to at least some abstract objects. (shrink)

Education in ethics among practising professionals should provide a systematic procedure for resolving moral problems. A method for such decision-making is outlined using the two classical orientations in moral philosophy, teleology and deontology. Teleological views such as utilitarianism resolve moral dilemmas by calculating the excess of good over harm expected to be produced by each feasible alternative for action. The deontological view focuses on rights, duties, and principles of justice. Both methods are used to resolve the 1971 Johns Hopkins case (...) of a baby born with Down's syndrome and duodenal atresia. (shrink)

What happened in the aftermath of Caligula's assassination in January A.d. 41 in relation to the client kings of the period has been the subject of a stimulating note by A. A. Barrett. He has argued that a rescission of Caligula's acta invalidated the legal position of the client kings appointed by Caligula, and that Claudius’ regularising of their position has been misunderstood by the ancient literary sources and has given rise to several apparent inconsistencies in their accounts.

L'Encomium copte sur saint Ménas fait partie de ces sources hagiographiques négligées et pourtant capitales lorsqu'il s'agit de reconstituer une étape de l'histoire religieuse de la région. Cet Encomium, attribué à Jean évêque d'Alexandrie, contient un récit des diverses étapes de la construction du grand sanctuaire de saint Ménas dans la région du lac Maréotis en Egypte. Ce récit éclaire la lutte entre les factions religieuses orthodoxe et arienne vers le milieu du IVe siècle. Il semble que c'est Lucius, l'évêque (...) arien d'Alexandrie, qui a consacré la basilique de Ménas. (shrink)