We investigate the algebraic structure of the upper semi-lattice formed by the recursively enumerable Turing degrees. The following strong generalization of Lachlan's Nonsplitting Theorem is proved: Given n ≥ 1, there exists an r.e. degree d such that the interval $\lbrack\mathbf{d, 0'}\rbrack \subset\mathbf{R}$ admits an embedding of the n-atom Boolean algebra B n preserving (least and) greatest element, but also such that there is no (n + 1)-tuple of pairwise incomparable r.e. degrees above d which pairwise join to 0' (and (...) hence, the interval $\lbrack\mathbf{d, 0'}\rbrack \subset\mathbf{R}$ does not admit a greatest-element-preserving embedding of any lattice L which has n + 1 co-atoms, including B n + 1 ). This theorem is the dual of a theorem of Ambos-Spies and Soare, and yields an alternative proof of their result that the theory of R has infinitely many one-types. (shrink)

Einstein, in his “Zur Elektrodynamik bewegter Körper”, gave a physical (operational) meaning to “time” of a remote event in describing “motion” by introducing the concept of “synchronous stationary clocks located at different places”. But with regard to “place” in describing motion, he assumed without analysis the concept of a system of co-ordinates.In the present paper, we propose a way of giving physical (operational) meaning to the concepts of “place” and “co-ordinate system”, and show how the observer can define both the (...) place and time of a remote event. Following Einstein, we consider another system “in uniform motion of translation relatively to the former”. Without assuming “the properties of homogeneity which we attribute to space and time”, we show that the definitions of space and time in the two systems are linearly related. We deduce some novel consequences of our approach regarding faster-than-light observers and particles, “one-way” and “two-way” velocities of light, symmetry, the “group property” of inertial reference frames, length contraction and time dilatation, and the “twin paradox”. Finally, we point out a flaw in Einstein’s argument in the “Electrodynamical Part” of his paper and show that the Lorentz force formula and Einstein’s formula for transformation of field quantities are mutually consistent. We show that for faster-than-light bodies, a simple modification of Planck’s formula for mass suffices. (Except for the reference to Planck’s formula, we restrict ourselves to Physics of 1905.). (shrink)

In Nicomachean Ethics X.7–8, Aristotle defends a striking view about the good for human beings. According to Aristotle, the single happiest way of life is organized around philosophical contemplation. According to the narrowness worry, however, Aristotle's contemplative ideal is unduly Procrustean, restrictive, inflexible, and oblivious of human diversity. In this paper, I argue that Aristotle has resources for responding to the narrowness worry, and that his contemplative ideal can take due account of human diversity.

Geoffrey Rose’s prevention paradox points to a tension between two prima facie plausible moral principles: that we should save the greater number and that weshould save the most at risk. This paper argues that a novel moral theory, ex-ante contractualism, captures our intuitions in many prevention paradox cases, regardless of our interpretation of probability claims. However, it goes on to show that it might be impossible to square ex-ante contractualism with all of our moral intuitions. It concludes that even if (...) ex-ante contractualism cannot furnish an entire ethics of risk, it does identify important considerations for any such theory. (shrink)

Geoffrey Rose’s prevention paradox points to a tension between two prima facie plausible moral principles: that we should save the greater number and that weshould save the most at risk. This paper argues that a novel moral theory, ex-ante contractualism, captures our intuitions in many prevention paradox cases, regardless of our interpretation of probability claims. However, it goes on to show that it might be impossible to square ex-ante contractualism with all of our moral intuitions. It concludes that even if (...) ex-ante contractualism cannot furnish an entire ethics of risk, it does identify important considerations for any such theory. (shrink)

P¯an.ini’s grammar includes several types of metarules which determine how its operational rules apply. Among them are “traffic rules” which constrain how rules interact with each other in grammatical derivations. These are typically formulated as designating a rule or class of rules asiddha “not effected” (or asiddhavat “as if not effected”) with respect to another rule or class of rules. For economy, the rules so designated are grouped into several sections, whose headings collectively declare them to be asiddha(vat). The biggest (...) such section, under the famous heading 8.2.1 p ¯urvatr¯asiddham, extends from 8.2.1 through the end of the grammar (8.4.68), and is hence called the Trip¯ad¯ı ‘Three Sections’. (shrink)

This is a book grounded in the real ethical challenges of modern business practice, with a world-religious perspective so necessary in an era of globalization.

Published within weeks of Charles Darwin's Origin of Species, Isabelle Duncan's Pre-Adamite Man (1860) is the first full-length treatment of preadamism by an evangelical. Intended as a reconciliation of Genesis and geology, Duncan's work gained immediacy when it was published shortly after the September 1859 revelations that men had walked among the mammoths. Written in the tradition of evangelical 'Christian philosophy', Pre-Adamite Man deploys innovative biblical hermeneutics and recent trends in geology to set out both a biblical preadamite theory, and (...) an unorthodox angelology. Duncan responded to contemporary secular interpretations of geology by pushing evangelical concordist strategies to new frontiers, filling out an acceptance of an ancient earth with new biblically informed catastrophist proposals and extensions of salvation history, while simultaneously retaining a firm commitment to plenary inspiration. The product is a highly readable book that operates both as an accessible treatment of geology and a theological discourse. Running through six printings between 1860 and 1866, the book was reviewed by many of the period's leading journals and created a minor controversy among evangelicals. This study both brings to life this previously neglected episode in scriptural geology, and adds to recent work on Victorian popular science writing. (shrink)

While there is significant consensus that undergraduate medical education should include bioethics training, there is widespread debate about how to teach bioethics to medical students. Educators disagree about course methods and approaches, the topics that should be covered, and the effectiveness and metrics for UME ethics training. One issue that has received scant attention is the timing of bioethics education during medical training. The existing literature suggests that most medical ethics education occurs in the pre-clinical years. Follow-up studies indicate that (...) medical students in their clinical rotations have little recall or ability to apply ethics concepts that were learned in their pre-clinical training. Trainees also report a desire for medical ethics to be taught in the context of practical application, which would suggest that the timing of pre-clinical ethics education is flawed. However, moving bioethics training to the clinical years should not be assumed to be the solution to the problems of recall and theory application. We argue that the effectiveness of timing bioethics education will depend on when medical students witness or experience particular categories of ethical dilemmas during their training. Our overarching hypothesis is that ethics education will be most effective when the bioethics training on a particular topic correlates to experiential exposure to that ethical issue. The purpose of our current study was to describe medical students exposure to particular categories of ethical conflicts, dilemmas, or issues. Our results may help bioethics educators better strategize about the most effective timing of medical ethics training in UME. (shrink)

The practice of prenatal screening for disability is sometimes objected to because of the hurt and offence such practices may cause to people currently living with disabilities. This objection is commonly termed “the expressivist objection”. In response to the objection it is standardly claimed that disabilities are analogous to illnesses. And just as it would be implausible to suppose reduction of the incidence of illnesses such as flu sends a negative message to ill people, so it is not plausible to (...) suppose prevention of disability sends a negative message to disabled people. The expressivist objection hinges, however, upon a view of the relationship between disability and self identity which sees disability as part of the identity of the disabled person, in a way in which illnesses such as flu cannot be. This possibility is generally not considered in critiques of the expressivist objection. In this paper, an “identity claim” to the effect that disabilities can be identity constituting is accepted and the force of the expressivist argument is reconsidered in the light of its acceptance. It is concluded that even when such an identity claim is accepted, the expressivist objection is still not morally compelling. (shrink)

In Beyond Schools: Muḥammad b. Ibrāhīm al-Wazīr's (d. 840/1436) Epistemology of Ambiguity, Damaris Wilmers provides the first extensive analysis of Ibn al-Wazīr's thought and its role in the "Sunnisation of the Zaydiyya", emphasizing its significance for conflicts between schools of thought and law beyond the Yemeni context. Contrasting Ibn al-Wazīr's works with those of his Zaydi contemporary Aḥmad b. Yaḥyā b. al-Murtaḍā, Damaris Wilmers offers a study of a number of heretofore unedited texts from 9th/15th century Yemen when Zaydi identity (...) was challenged by an increasing theological and legal diversity. She shows how Ibn al-Wazīr, who has been classed with different schools, actually de-emphasized school affiliation and developed an integrative approach based on a unique theory of knowledge. (shrink)

The relationship between place and remembering has been a long-standing matter of phenomenological concern. The role of the 'lived body' in mediating acts of remembering in context is clearly crucial. In this paper we contribute to an 'expanded view of memory' by describing how remembering difficult or problematic events -- 'vital memories' -- draws upon inter-subjective and inter-objective relations. We discuss two conceptual tools that provide an analytic framework -- the concept of 'life space' drawn from Kurt Lewin and the (...) idea of the 'setting specificity' of remembering. From this perspective we can see that the 'lived body' does not constitute a singular unity but rather a 'plurality' of potential bodies that have 'operative solidarity' with the material relations in which they are constituted. Drawing on the work of Eduardo Viveiros de Castro, we argue that 'body memories' need to be analysed from within the embodied material-relational perspective wherein they are afforded. (shrink)

This paper discusses the predicament of Oscar Pistorius. He is a Paralympic gold medallist who wishes to participate in the Olympics in Beijing in 2008. Following a brief introductory section, the paper discusses the arguments that could be, and have been, deployed against his participation in the Olympics, should he make the qualifying time for his chosen event (400m). The next section discusses a more hypothetical argument based upon a specific understanding of the fair opportunity rule. According to this, there (...) may be a case for allowing Pistorius to compete even if he should fail to make the official qualifying time. The final part of the paper reviews the situation at the time of writing and offers some assessment of the strategy of the IAAF in responding to it. It is argued below that the proper focus for assessment of Pistorius's eligibility to compete should not be on whether his blades lead to his having an unfair advantage over his competitors, but instead should focus on whether what he does counts as running. (shrink)

The purpose of this study is to examine the relationship between the corporate social performance of an organization and three variables: the size of the organization, the financial performance of the organization, and the environmental performance of the organization. By empirically testing data from 1987 to 1992, the results of the study show that a firm's corporate social performance is indeed impacted by the size of the firm, the level of profitability of the firm, and the amount of pollution emissions (...) released by the firm. (shrink)

A substantial guide providing an overview of both physicalism and metaphysical naturalism, reviewing both questions of formulation and justification for both doctrines. Includes a diagnostic strategy for understanding talk of naturalism as a metaphysical thesis.

This paper examines one particular justification for the screening and termination of embryos/fetuses which possess genetic features known to cause disability. The particular case is that put forward in several places by John Harris. He argues that the obligation to prevent needless suffering justifies the prevention of the births of disabled neonates. The paper begins by rehearsing Harris's case. Then, drawing upon claims advanced in a recent paper in the Journal of Medical Ethics, it is subjected to critical scrutiny, focusing (...) on Harris's “suffering claim” .1 It is argued that the suffering claim must be false if understood as an empirical claim. And, even if understood as a conceptual truth, it mistakenly assimilates the concepts of harm and suffering. Finally, again focusing on Harris's recent work in this area, his characterisation of disability as a “harmed condition” is shown not to apply in the case of at least some moderate forms of intellectual disability. (shrink)