The book deals with the notion of Downward Causation from a wide array of perspectives, including physics, biology, psychology, social science, communication studies, text theory, and philosophy. The book includes proponents as well as opponents discussing the validity of the notion.

Consider the concept combination ‘pet human’. In word association experiments, human subjects produce the associate ‘slave’ in relation to this combination. The striking aspect of this associate is that it is not produced as an associate of ‘pet’, or ‘human’ in isolation. In other words, the associate ‘slave’ seems to be emergent. Such emergent associations sometimes have a creative character and cognitive science is largely silent about how we produce them. Departing from a dimensional model of human conceptual space, this (...) article will explore concept combinations, and will argue that emergent associations are a result of abductive reasoning within conceptual space, that is, below the symbolic level of cognition. A tensor-based approach is used to model concept combinations allowing such combinations to be formalized as interacting quantum systems. Free association norm data is used to motivate the underlying basis of the conceptual space. It is shown by analogy how some concept combinations may behave like quantum-entangled particles. Two methods of analysis were presented for empirically validating the presence of non-separable concept combinations in human cognition. One method is based on quantum theory and another based on comparing a joint probability distribution with another distribution based on a separability assumption using a chi-square goodness-of-fit test. Although these methods were inconclusive in relation to an empirical study of bi-ambiguous concept combinations, avenues for further refinement of these methods are identified. (shrink)

To demarcate the limits of experimental knowledge, we probe the limits of what might be called an experiment. By appeal to examples of scientific practice from astrophysics and analogue gravity, we demonstrate that the reliability of knowledge regarding certain phenomena gained from an experiment is not circumscribed by the manipulability or accessibility of the target phenomena. Rather, the limits of experimental knowledge are set by the extent to which strategies for what we call ‘inductive triangulation’ are available: that is, the (...) validation of the mode of inductive reasoning involved in the source-target inference via appeal to one or more distinct and independent modes of inductive reasoning. When such strategies are able to partially mitigate reasonable doubt, we can take a theory regarding the phenomena to be well supported by experiment. When such strategies are able to fully mitigate reasonable doubt, we can take a theory regarding the phenomena to be established by experiment. There are good reasons to expect the next generation of analogue experiments to provide genuine knowledge of unmanipulable and inaccessible phenomena such that the relevant theories can be understood as well supported. This article is part of a discussion meeting issue ‘The next generation of analogue gravity experiments’. (shrink)

One approach to validating simulation models is to formally compare model outputs with independent data. We consider such model validation from the point of view of Frequentist statistics. A range of estimates and tests of goodness of fit have been advanced. We review these approaches, and demonstrate that some of the tests suffer from difficulties in interpretation because they rely on the null hypothesisHypothesis that the model is similar to the observationsObservations. This reliance creates two unpleasant possibilities, namely, a model (...) could be spuriously validated when dataData are too few, or inappropriately rejected when data are too many. Finally, these tests do not allow a principled declaration of what a reasonable level of difference would be considering the purposes to which the model will be put. We consider equivalence tests, and demonstrate that they do not suffer from the previously identified shortcomings. We provide two case studies to illustrate the claims of the chapter. (shrink)

In this paper we discuss two hybrid languages, ℒ and ℒ, and provide them with complete axiomatizations. Both languages combine features of modal and classical logic. Like modal languages, they contain modal operators and have a Kripke semantics. Unlike modal languages, in these systems it is possible to 'label' states by using A and ↓ to bind special state variables.This paper explores the consequences of hybridization for completeness. As we shall show, the challenge is to blend the modal idea of (...) canonical models with the classical idea of witnessed maximal consistent sets. The languages ℒ and ℒ provide us with two extreme examples of the issues involved. In the case of ℒ, we can combine these ideas relatively straightforwardly with the aid of analogs of the Barcan axioms coupled with a modal theory of labeling. In the case of ℒ, on the other hand, although we can still formulate a theory of labeling, the Barcan analogs are not valid. We show how to overcome this difficulty by using COV*, an infinite collection of additional rules of proof which has been used in a number of investigations of extended modal logic. (shrink)

It is argued that the principles of classical physics are inimical to the development of a satisfactory science of consciousness The problem is that insofar as the classical principles are valid consciousness can have no e ect on the behavior and hence on the survival prospects of the organisms in which it inheres Thus within the classical framework it is not possible to explain in natural terms the development of consciousness to the high level form found in human beings In (...) quantum theory on the other hand consciousness can be dynamically e cacious quantum the ory does allows consciousness to in uence behavior and thence to evolve in accordance with the principles of natural selection However this evo lutionary requirement places important constraints upon the details of the formulation of the quantum dynamical principles.. (shrink)

Imperatives cannot be true, but they can be obeyed or binding: `Surrender!' is obeyed if you surrender and is binding if you have a reason to surrender. A pure declarative argument — whose premisses and conclusion are declaratives — is valid exactly if, necessarily, its conclusion is true if the conjunction of its premisses is true; similarly, I suggest, a pure imperative argument — whose premisses and conclusion are imperatives — is obedience-valid (alternatively: bindingness-valid) exactly if, necessarily, its conclusion is (...) obeyed (alternatively: binding) if the conjunction of its premisses is. I argue that there are two kinds of bindingness, and that a vacillation between two corresponding variants of bindingness-validity largely explains conflicting intuitions concerning the validity of some pure imperative arguments. I prove that for each of those two variants of bindingness-validity there is an equivalent variant of obedience-validity. Finally, I address alternative accounts of pure imperative inference. (shrink)

We consider notions of truth and logical validity defined in various recent constructions of Hartry Field. We try to explicate his notion of determinate truth by clarifying the path-dependent hierarchies of his determinateness operator.

There have been two recent attempts to disentangle the evidence for the procedures in fourth-century Athens for the enactment and revision of nomoi, by D. M. MacDowell and by M. H. Hansen. I have learned from both, but think that further progress can be made. MacDowell distinguishes five separate measures: The Old Legislation Law, requiring action at a specified time, advance publicity for the new proposal, concurrent repeal of any existing law with which the new proposal conflicts, and a decision (...) by nomothetae who are omomokotes, men who have sworn the dicastic oath : this is described as a παλαις νόμος, and as the law καθ' ν σαν ο πρότεροι νομοθέαι. Replacing that c. 370, the New Legislation Law, no longer requiring action at a specified time, advance publicity, concurrent repeal, or that the nomothetae should be omomokotes: as a result of the change conflicting laws have been enacted, and for some time continuing to the mid 350s commissioners have had to be elected to sort out the conflicts. Still valid in the 350s, the Review Law, requiring an annual epicheirotonia of the laws in four subject divisions in the assembly on 11 Hecatombaeon , advance publicity for new proposals, and at the third assembly after 11 Hecatombaeon the appointment of nomothetae who are omomokotes to decide between the existing laws and the new proposals. (shrink)

This paper considers ethical decision making by blending three streams of related research: cognitive moral development of the decision maker, rational choice theory and a subjective expected utility model. Ethical dilemmas can be defined as situations where moral certainty is compromised by rational cognition. In this paper, the authors assume that some people use a morality-first perspective and others a rationality-first perspective. Ethical scenarios were written and used to test hypotheses derived from this perspective. The instrument developed was shown to (...) be in need of further refinement. Results are discussed in terms of relationships between participant-characteristics variables overall and subscale responses to the ethical scenarios. (shrink)

Consider the concept combination ‘pet human’. In word association experiments, human subjects produce the associate ‘slave’ in relation to this combination. The striking aspect of this associate is that it is not produced as an associate of ‘pet’, or ‘human’ in isolation. In other words, the associate ‘slave’ seems to be emergent. Such emergent associations sometimes have a creative character and cognitive science is largely silent about how we produce them. Departing from a dimensional model of human conceptual space, this (...) article will explore concept combinations, and will argue that emergent associations are a result of abductive reasoning within conceptual space, that is, below the symbolic level of cognition. A tensor-based approach is used to model concept combinations allowing such combinations to be formalized as interacting quantum systems. Free association norm data is used to motivate the underlying basis of the conceptual space. It is shown by analogy how some concept combinations may behave like quantum-entangled particles. Two methods of analysis were presented for empirically validating the presence of non-separable concept combinations in human cognition. One method is based on quantum theory and another based on comparing a joint probability distribution with another distribution based on a separability assumption using a chi-square goodness-of-fit test. Although these methods were inconclusive in relation to an empirical study of bi-ambiguous concept combinations, avenues for further refinement of these methods are identified. (shrink)

A general hypothesis of atom size effects for G.P. zone formation is discussed in this paper and results are presented of precipitation in the systems Fe-Au and Fe-Mo. Techniques used are resistivity measurements and electron microscopy. In the Fe-Mo system it is shown that after initial cluster formation during the early stages of ageing after the quench, further growth ceases and vacancies anneal out into dislocation loops. The activation energy for the initial clustering was 1·3 ev whilst the excess vacancy (...) concentration estimated from the loop area gave a vacancy formation energy of ∼1·5 ev. These results confirm recent quenching results on pure iron. The refusal of Mo zones to grow confirms the general hypothesis of size effects.In the Fe-Au system precipitation of gold platelets after quenching is shown to be associated with the high density of dislocations formed during quenching through the phase transformation of the iron matrix. The effect of the dislocations is shown by the low value of ∼0·5 for the Johnson—Mehl kinetic parameter and by the activation energy for growth which is ∼0·8 of the equilibrium diffusion energy for Au in Fe. As the size-effect hypothesis does not apply to precipitation on dislocations the growth of zones in Fe—Au does not affect its validity. (shrink)

The author investigates how the conception of legal validity as a specific mode of existence, adopted by Kelsen in Allgemeine Theorie der Normen (General Theory of Norms), can be reconciled with a conception of the legal system in which conflicts of legal norms remain of logical concern. To this end he makes use of Ludwig Wittgenstein's picture theory of the proposition as set out in the Tractatus Logico-Philosophicus. The conclusion is that in order to reconcile the two conceptions, the (...) legal system itself must be conceived of as consisting of three sub-systems, namely, (i) a sub-system of perceptible legal judgments, (ii) a sub-system of valid legal conditions, and (iii) a sub-system of observable social practices. (shrink)

Contractarians aim to derive moral principles from the dictates of instrumental rationality alone. But it is well-known that contractarian moral theories struggle to identify normative principles that are both uniquely rational and morally compelling. Michael Moehler's recent book, *Minimal Morality* seeks to avoid these difficulties by developing a novel "two-level" social contract theory, which restricts the scope of contractarian morality to cases of deep and persistent moral disagreement. Yet Moehler remains ambitious, arguing that a restricted version of Kant's categorical imperative (...) is a uniquely rational principle of conflict resolution. We develop a formal model of Moehler's informal game-theoretic argument, which reconstructs a valid argument for Moehler's conclusion. This model, in turn, enables us to expose how a successful argument for Moehler's contractarian principle rests on assumptions that can only be justified by subtle yet significant departures from the standard conception of rationality. We thus extend our understanding of familiar contractarian difficulties by showing how they arise even if we restrict the scope of contractarian morality to a domain where its application seems both promising and necessary. We show that the problem lies not in contractarians' immodest ambitions but in the modest resources rationality can offer to satisfy them. (shrink)

forall x: Calgary is a full-featured textbook on formal logic. It covers key notions of logic such as consequence and validity of arguments, the syntax of truth-functional propositional logic TFL and truth-table semantics, the syntax of first-order (predicate) logic FOL with identity (first-order interpretations), symbolizing English in TFL and FOL, and Fitch-style natural deduction proof systems for both TFL and FOL. It also deals with some advanced topics such as modal logic, soundness, and functional completeness. Exercises with solutions are (...) available. It is provided in PDF (for screen reading, printing, and a special version for dyslexics), HTML, and in LaTeX source code. (shrink)

Rule A: if it's metaphysically necessary that p, we may validly infer that no one is even partly morally responsible for the fact that p. Our principal aim in this article is to highlight the importance of this rule and to respond to two recent challenges to it. We argue that rule A is more important to contemporary theories of moral responsibility than has previously been recognized. We then consider two recent challenges to the rule and argue that neither challenge (...) successfully undermines the rule's initial appeal. (shrink)

A convention with regard to geometry, accepting nonholonomic aether motion and coordinate-dependent units, is always valid as an alternative to Einstein's convention. Choosing flat spacetime, Newtonian gravitation is extended, step by step, until equations closely analogous to those of Einstein's theory are obtained. The first step, demanded by considerations of inertia, is the introduction of a vector potential. Treating the electromagnetic and gravitational fields as real and imaginary components of a complex field (gravitational mass being treated as imaginary charge), the (...) Maxwell stress-momentum-energy tensor for the complex field is then used as the source for both fields. The spherically symmetric solution of these unified field equations describes the electron. Third, effects arising from motion of aether fluid with respect to the artificial reference systems of flat spacetime are included. On the grounds that attraction between likes and repulsion between likes are, a priori, equally possible, it is suggested that gravitational and electromagnetic phenomena should enjoy equal status. This can be achieved on the scale of an infinite cosmos by introducing a hierarchy of isolated systems, each of which is a universe when viewed internally and an elementary particle when viewed externally. A universe (defined by the Hubble radius), an electron, and a neutrino are three consecutive isolated systems of the hierarchy. Implied is the existence of antiuniverses where gravitational mass has opposite sign and antimatter predominates. Remarkable relationships between physical constants emerge. (shrink)

According to the ideological surround model of research, a more “objective” psychology of religion requires efforts to bring etic social scientific and emic religious perspectives into formal dialog. This study of 245 Iranian university students illustrated how the dialogical validity of widely used etic measures of religion can be assessed by examining an emic religious perspective on psychology. Integrative Self-Knowledge and Self-Control Scales recorded two aspects of the “Perfect Man” as described by the Iranian Muslim philosopher Mortazā Motahharī. Use (...) of these instruments in correlation and multiple regression procedures identified Intrinsic, Extrinsic Personal, Religious Interpretation, Extrovertive Mysticism, Prayer Fulfillment, Universality, Connectedness, and Religiosity Scales as adaptive in their implications for a Muslim psychology of religion. Religious Crisis had maladaptive and Extrinsic Social, Introvertive Mysticism, and Quest Scales had ambiguous implications. These data illustrated how etic forms of understanding can clarify and can be clarified by emic insights. (shrink)

The Nuremberg Trials of leading National Socialists established the principle that individuals may be legally punished, even by death, for obeying the laws of their country. Is there then a higher law by which enacted valid positive laws may be judged, so that persons subject to such laws would be duty-bound to defy them? In recent years the theory of natural law has been revived by a number of philosophers and jurists, who however often disagree sharply among themselves about the (...) proper methods for defining and deriving natural law. Howard Kainz surveys the history of natural law from its foreshadowing in ancient Greece down to the most recent controversies. Natural Law both introduces the subject to newcomers and sheds fresh light on such figures as Plato, Aristotle, Hume, Kant, Veatch, McInerny, Grisez, and Finnis. (shrink)

Rationale, aims and objectives Given the increasing prevalence of cataract and demand for cataract extraction surgery, patients must often wait to undergo this procedure. We validated a previously developed priority scoring system in terms of clinical variables, pre-intervention health status, appropriateness of surgery and gain in visual acuity (VA) and health-related quality of life (HRQoL).Methods Explicit prioritization criteria for cataract extraction created by a variation of the Research and Development (RAND) and University of California Los Angeles appropriateness methodology were retrospectively (...) applied to a prospective cohort of 5257 patients on waiting lists to undergo cataract by phacoemulsification at 17 hospitals in Spain. Demographic data, clinical data and data related to surgical technique were collected by trained ophthalmologists. Patients were evaluated by their ophthalmologist before the intervention and 6 weeks afterward. They also completed, by mail, the Visual Function Index (VF-14) before the intervention and 3 months afterward.Results High-priority patients experienced greater improvement in VA and HRQoL than those classified as intermediate or low-priority (P < 0.0001), even after adjusting by VA and the VF-14 score at baseline. The time to intervention was the same for high-priority patients as it was for intermediate and low-priority patients.Conclusions The priority score we developed identified patients most likely to experience the greatest improvements from cataract extraction. Use of this tool could provide a fairer and more rational way to prioritize patients for cataract extraction. (shrink)

Objective: To assess whether continuous consent, a process in which information is given to research participants at different stages in a trial, and clinician training in that process were effective when used by clinicians while gaining consent to the Total Body Hypothermia (TOBY) trial. The TOBY trial is a randomised controlled trial (RCT) investigating the use of whole-body cooling for neonates with evidence of perinatal asphyxia. Obtaining valid informed consent for the TOBY trial is difficult, but is a good test (...) of the effectiveness of continuous consent. Methods: Semistructured interviews were conducted with 30 sets of parents who consented to the TOBY trial and with 10 clinicians who sought it by the continuous consent process. Analysis was focused on the validity of parental consent based on the consent components of competence, information, understanding and voluntariness. Results: No marked problems with consent validity at the point of signature were observed in 19 of 27 (70%) couples. Problems were found mainly to lie with the competence and understanding of the parents: mothers, particularly, had problems with competence in the early stages of consent. Problems in understanding were primarily to do with side effects. Problems in both competence and understanding were observed to reduce markedly, particularly for mothers, in the post-signature phase, when further discussion took place. Randomisation was generally understood but unpopular. Information was not always given by clinicians in stages during the short period available before parents gave consent. Most clinicians, however, were able to give follow-up information. Discussion: Consent validity was found to compare favourably with similar trials examined in the Euricon study. Conclusion: Adopting the elements of the continuous consent process and clinician training in RCTs should be considered by researchers, particularly when they have concerns about the quality of consent they are likely to obtain by using a conventional process. (shrink)

Background: The ethics of cold calling—visiting subjects at home without prior appointment agreed—in follow up research studies has received little attention although it is perceived to be quite common. We examined the ethical implications of cold calling in a study of subjects with defined neurotic disorders followed up 12 years after initial assessment carried out to determine outcome in terms of symptoms, social functioning, and contact with health services. The patients concerned were asked at original assessment if they would agree (...) to be followed up subsequently and although they agreed no time limit was put on this.Objectives: To decide if cold calling was ethically justifiable and, if so, to set guidelines for researchers.Design: The study was a cohort study of patients with neurotic disorder treated initially for 10 weeks in a randomised controlled trial.Findings: At follow up by a research medical practitioner 18 of the 210 patients had died and of the remaining 192 patients 186 were seen or had a telephone interview. Four patients refused and two others did not have interviews but agreed to some data being obtained. However, only 104 patients responded to letters inviting them to make an appointment or to refuse contact and the remainder were followed up by cold calling, with most patients agreeing readily to the research interview. The findings illustrate the dilemma of the need to get the maximum possible data from such studies to achieve scientific validity and the protection of subjects’ privacy and autonomy.Conclusions: More attention needs to be paid to consent procedures if cold calling is to be defended on ethical grounds but it is unreasonable to expect this to be obtained at the beginning of a research study in a way that satisfies the requirements for informed consent. A suggested way forward is to obtain written consent for the research at the time that cold calling takes place before beginning the research. (shrink)

SummaryRussell's vicious‐circle principle is an endeavour to express a general principle of mathematics which, as the author feels, is fundamental for mathematics. This principle, in a sense warranty of formal consistency, interdicts in some form or other the selfapplication of mathematical entities. It is shown that the VCP is a vicious‐circle fallacy; that, although it can't be given an expression which is simultaneously formal and generally valid, it is generally presupposed by mathematics as far as a consistent formalism is concerned; (...) that this paradoxical situation refers to an essentially informal and non‐mathematical domain which forms a necessary condition for mathematics, but can't exhaustively be expressed in any mathematical formalism. Finally the distinction between semantical and syntactical import and the character of negation are restated in view of these results.RésuméLe principe du cercle vicieux de Russell a, selon l'auteur, une portée générale et fondamentale en mathématiques: il interdit, sous quelque forme que ce soit, lapos;application dapos;entités mathématiques à elles‐mêmes. Ce principe est équivalent au paradoxe de Russell; on ne peut pas le formaliser sous peine de compromettre sa validite universelle, et pourtant il constitue une présupposition de tout formalisme qui veut éviter la contradiction. Cette situation paradoxale nous renvoie à un domaine essentiellement in‐formel et non‐mathématique, qui embrasse le formalisme mathématique, en constitue une condition nécessaire, mais ne peut être exprimé dans aucun formalisme dapos;une manière exhaustive. Finalement le problème logique de la négation et celui de la distinction entre les rapports sémantiques et syntactiques sont repris à la lumière de ces résultats.ZusammenfassungRussells Zirkelprinzip ist der Versuch, ein allgemeingültiges Prinzip der Mathematik auszudrücken, das, wie der Verfasser meint, von grundsätzlicher Bedeutung ist. Dieses Prinzip, das in einem gewissen Sinne die formale Widerspruchsfreiheit verbürgt, verbietet die Selbstbezüglichkeit mathematischer Entitäten. Der Artikel zeigt, dass es mit Russells Paradox äquivalent ist, und dass es eine allgemeine Voraussetzung der Mathematik als eines konsistenten Formalismus darstellt, obwohl man ihm selbst keinen zugleich allgemeingültigen und formellen Ausdruck geben kann; es wird des weiteren gezeigt, dass diese paradoxale Situation auf ein wesentlich informelles und nicht‐mathematisches Gebiet verweist, das eine notwendige Bedingung für die Mathematik darstellt, jedoch selber nicht erschöpfend im Formalismus dargestellt werden kann. Schliesslich werden a) die Unterscheidung zwischen semantischen und syntakti‐schen Beziehungen und b) die Negation im Lichte dieser Ergebnisse neu überdacht. (shrink)

Consent ought to be required to withhold treatment that is in a patient’s best interests to receive. Do not resuscitate orders are examples of best interests assessments at the end of life. Such assessments represent value judgments that cannot be validly ascertained without patient input. If patient input results in that patient dissenting to the DNR order then individual physicians are not justified in overriding such dissent. To do so would give unjustifiable primacy to the values of the individual physician. (...) Therefore patient consent is effectively required to write a DNR order. Patient dissent to a DNR order should trigger a fair process mechanism to resolve the dispute. (shrink)

The so-called Direct Argument for the incompatibility of moral responsibility and causal determinism depends on a rule of inference called Rule A, a rule that says no one is even partly morally responsible for a necessary truth. While most philosophers think that Rule A is valid, Stephen Kearns has recently offered several alleged counterexamples to the rule. In the paper, I show that Kearns’ counterexamples are unsuccessful.

The place of philosophical medical ethics in medical education and clinical practice has recently been questioned. Although partially valid, the criticisms do not warrant abandoning the enterprise. Instead a reappraised model, based on Aristotelean concepts of intellectual and moral virtue is suggested.

Some arguments, based on the possible spontaneous violation of the cosmological principle (represented by the observed large-scale structures of galaxies), on the Cartan geometry of simple spinors, and on the Fock formulation of hydrogen atom wave equation in momentum space, are presented in favor of the hypothesis that space-time and momentum space should be both conformally compactified and should both originate from the two four-dimensional homogeneous spaces of the conformai group, both isomorphic (S 3 ×S 1)/Z 2 and correlated by (...) conformal inversion, but should not necessarily be identified with them. Within this framework, the possible common origin for the SO(4) symmetry underlying the geometrical structure of the Universe, of Kepler orbits, and of the H atom is discussed. One of the consequences of the proposed hypothesis could be that any quantum field theory should be naturally free from both infrared and ultraviolet divergences. But then physical spaces defined as those where physical phenomena may be best described through some set of fields, could be different from those homogeneous spaces. A simple, exactly soluble, toy model, valid for a two-dimensional spacetime, is presented where the conjectured conformally compactified homogeneous spaces are both isomorphic to (S 1 ×S 1)/Z 2,while the possible physical spaces could be two finite lattices which are dual since Fourier transforms, represented by finite, discrete, sums, may be well defined on them. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:P. Christopher Smith HEIDEGGER'S MISINTERPRETATION OF RILKE Certainly one of Heidegger's most important accomplishments is to have reminded us of the original unity of poetry and philosophy. The "metaphysical" philosophy which Heidegger calls into question is characterized by its sharp separation of itself from what it calls "unscientific" modes of discourse. But that, Heidegger shows, is a limitation which comes from its narrowed conception of itself as strict, methodical (...) science, and one need only turn to Parmenides before the tradition of metaphysics or Nietzsche at the end of that tradition to see that in fact Heidegger is right: philosophy and poetry are not necessarily to be dissociated. Indeed, the former can and should grow out of the soil of the latter. The point here is one which Heidegger might be said to have learned by experience: he found that the poetry of Hölderlin opened a way for philosophy out of the cul de sac into which phenomenological science had led it. And of course not only Hölderlin: Rilke was obviously important too. In fact to some, myself included, it seems that certainly as much as Hölderlin and perhaps even more, Rilke is the poet who displays the pre-metaphysical unity of poetry and philosophy. But that is not how Heidegger views Rilke. In respect to its philosophical value, Rilke's poetry, we are told, is inferior to Hölderlin's. There is, I suggest, a most puzzling blend of attraction and suspicion in Heidegger's interpretation of Rilke. On the one hand, Heidegger, perhaps better than anyone, is able to make clear the philosophical importance of Rilke's poetry and yet, having done that and having shown thereby the greatest sympathy for Rilke's thought, Heidegger goes on to portray Rilke as "metaphysical" and to claim for that reason that he is not the poet Hölderlin is. Is that assessment valid? And how did Heidegger arrive at it? It is to these questions that the following study is addressed. On my reading of "Wozu Dichter"1 the charge that Rilke persists in "metaphysical" thought has three dimensions. To begin with, the overriding consideration in the whole of the essay is that, like all "metaphysicians," Rilke is oblivious to the Being event. There are in 4 Philosophy and Literature turn two consequences which follow from that obliviousness: first, Rilke grounds all of what is in some highest existent, namely nature taken as will, and second, in turning inwards to consciousness he re-presents the original presencing of existents. The theme of grounding in a highest existent is worked out from page 256 (p. 100) to page 281 (p. 126) and that of the re-presentation in consciousness, from page 281 (p. 126) to page 294 (p. 141). It will become evident, I think, that the discussions of two other apparently separate questions, that of the Open and that of saying and singing, fit respectively into each of these major sections of the essay. Let us now consider the aspects of the charge that Rilke is "metaphysical" one by one. Just what does obliviousness to Being mean? It means obliviousness to the clearing or lighting {Lichtung). Heidegger, it must be kept in mind, distinguishes between what is and the event in which what is comes to be displayed as such. He refers to the event itself as the lighting and it is only in the light of the lighting, he tells us, that what is can be. Obliviousness to Being is obliviousness, not to some highest existent or even to the whole of beings, but to the Being event, to the lighting. "Metaphysics," in seeking the ontos on, the being which in being most truly underlies all other existents, forgets the event in which any being, even the highest, comes to be. Consequently, instead of experiencing temporal presencing, arising out of non-presence, das Nichts, "metaphysics" reduces anything which comes to be to something which always is in steady presence. Obliviousness to Being is, if seen in this way, obliviousness to the nicht-ist, das Nichts from which any ist originates. That shows up in Rilke in that for him beings are not "dissolved in void... (shrink)

It is argued that promissory obligation arising from the contract of employment offers a simpler and less contentious explanation and justification of the doctor-nurse relationship at work, than does May's proposal of second-order reasons. The second-order reason position is rejected as the norm for that relationship, and in the exceptional case, where it is admitted, shared employee status is identified as primary validator of a doctor as locus of rational authority. Finally, a brief case is made for a more precise (...) vocabulary to describe the doctor-nurse relationship, as a contribution to more collegial relations. (shrink)

The chapter about hybridism written by Darwin falls in the cluster of The Origin of Species which deals with the main difficulties of the theory of descent with modification through natural selection. Darwin’s goal in analyzing the phenomenon of hybridism was to debate the validity of the existence of a fundamental distinction between species and varieties; thus, this discussion addresses an integral part of the so-called species problem, which includes a set of questions about the definition of the concept (...) of species, that is, of what a species is. In this chapter, we analyze the historical background of this debate, from Linnaeus to Kölreuter and Gärtner, and discuss the structure and arguments present in Origin’s Chapter VIII, in which Darwin tackles the problem at hand. (shrink)

Saul Kripke has made fundamental contributions to a variety of areas of logic, and his name is attached to a corresponding variety of objects and results. 1 For philosophers, by far the most important examples are ‘Kripke models’, which have been adopted as the standard type of models for modal and related non-classical logics. What follows is an elementary introduction to Kripke’s contributions in this area, intended to prepare the reader to tackle more formal treatments elsewhere.2 2. WHAT IS A (...) MODEL THEORY? Traditionally, a statement is regarded as logically valid if it is an instance of a logically valid form, where a form is regarded as logically valid if every instance is true. In modern logic, forms are represented by formulas involving letters and special symbols, and logicians seek therefore to define a notion of model and a notion of a formula’s truth in a model in such a way that every instance of a form will be true if and only if a formula representing that form is true in every model. Thus the unsurveyably vast range of instances can be replaced for purposes of logical evaluation by the range of models, which may be more tractable theoretically and perhaps practically. Consideration of the familiar case of classical sentential logic should make these ideas clear. Here a formula, say (p & q) ∨ ¬p ∨ ¬q, will be valid if for all statements P.. (shrink)

I argue that classical counterfactual semantics in the style of Stalnaker, Lewis, and Kratzer validates an inference pattern that is disconfirmed in natural language. The solution is to alter the algorithm we use to handle inconsistency in premise sets: rather than checking all maximally consistent fragments of a premise sets, as in Krazter’s semantics, we selectively remove some of the premises. The proposed implementation starts from standard premise semantics and involves a new ‘filtering’ operation that achieves just this removal. The (...) resulting semantics is interestingly related to the semantics for counterfactuals emerging from Judea Pearl’s causal models framework in computer science: in particular, filtering is a possible worlds semantics counterpart of Pearl’s interventions. (shrink)

Two mechanisms of the formation of antiphase-boundary tubes resulting from the shortening of Kear-Wilsdorf locks are examined in the light of a recent paper by Chiu and Veyssie ¤ re. The mechanism based on bypassing KW locks and subsequent annihilation of the screw dipole by cross-slip is considered in more detail. It is concluded that the objections raised by Chiu and Veyssie ¤ re against this mechanism are not valid, and that the predictions of the mechanism are consistent with their (...) experimental observations. Questions are raised as to whether some of their observations are inconsistent with the operation of the mechanism based on the motion of jogs whose corners are relaxed by forced climb. (shrink)

Some philosophers argue that the principles of human reasoning are impeccable, and that mistakes are no more than momentary lapses in “information processing”. This article makes a case to the contrary. It shows that human reasoners commit systematic fallacies. The theory of mental models predicts these errors. It postulates that individuals construct mental models of the possibilities to which the premises of an inference refer. But, their models usually represent what is true in a possibility, not what is false. This (...) procedure reduces the load on working memory, and for the most part it yields valid inferences. However, as a computer program implementing the theory revealed, it leads to fallacious conclusions for certain inferences—those for which it is crucial to represent what is false in a possibility. Experiments demonstrate the variety of these fallacies and contrast them with control problems, which reasoners tend to get right. The fallacies can be compelling illusions, and they occur in reasoning based on sentential connectives such as “if” and “or”, quantifiers such as “all the artists” and “some of the artists”, on deontic relations such as “permitted” and “obligated”, and causal relations such as “causes” and “allows”. After we have reviewed the principal results, we consider the potential for alternative accounts to explain these illusory inferences. And we show how the illusions illuminate the nature of human rationality. (shrink)

A Principle of fundamental importance, if it is valid, for the interpretation of the Pentekontaetia is laid down by the authors of A. T.L. iii in its most rigorous terms: it is that Thucydides has set events ‘in proper order … without any deviation whatever’. The conclusion appears to the present writer to be founded ultimately on a false assumption about Thucydides' purpose in these chapters, namely that he set out to write an outline history of the period of fifty (...) years to which he refers in 118.2 and, in effect, in 97. An examination of these passages reveals that it is not the outline of a period as a period that is offered, but rather the account of a particular theme or process falling within the period: his purpose in presenting the theme there defined is to be seen from the setting of the excursus as a unit in Bk. I rather than from the statement in 97.2: the due significance of this last, and of the demarcation of a period in 118. 2, is to be seen only in this wider context. (shrink)

This paper deals with the transnationalism of racial anthropological frameworks and its role in the understanding of human difference during India’s decolonization and nation-building. With attention to the circulation of scientific objects, I focus on the practices and articulations of Irawati Karve, an Indian anthropologist with a transnational scientific trajectory and nationalistic political engagements. I argue that Karve’s adaptation of an internationally validated German racial approach to study caste, ethnic and religious groups contributed to the further racialization of these categories (...) as well as to the racialization of nationalistic projects in Maharashtra and India. I conclude with a reflection on the transnationalization of the coloniality of racialization. (shrink)