I critically evaluate the influential new wave account of theory reduction in science developed by Paul Churchland and Clifford Hooker. First, I cast doubt on claims that the new wave account enjoys a number of theoretical virtues over its competitors, such as the ability to represent how false theories are reduced by true theories. Second, I argue that the genuinely novel claim that a corrected theory must be specified entirely by terms from the basic reducing theory is in fact too (...) restrictive for scientific practice and should be rejected. Basic theories co-evolve with nonbasic theories in a mutually interactive way, and thus the basic theories incorporate the concepts and concerns of nonbasic theories. Third, I show that once its ontological consequences are duly noted, the reductive part the new wave account collapses into the classical theory developed within the logical empiricist tradition. As such, it still falls prey to standard anti-reductionist argument based upon multiple realizability and the cross-classification of special science and physical science terms. (shrink)

Some recent physiological data indicate that the “subjective timing” of experiences can be “automatically referred backwards in time” to represent a sequence of events even though the earlier portions of associated neurophysiological activity are themselves insufficient to elicit the experience of any sensation. The challenge, then, is to explain how subjects can experience what they do in the reported ways when, if one looked just at certain neurophysiological activity, it would seem that perhaps subjects should report their sensations differently. The (...) phenomenon has seemed sufficiently remarkable to the neurobiologist John Eccles to count as evidence for mind-body dualism. This dualistic interpretation has resulted in a spirited attack by P. S. Churchland on both the physiological research and the dualistic interpretation. Her attack resulted in an equally spirited defense of the research by the primary investigator, B. Libet, where he reaffirmed his more guarded interpretation that “the temporal discrepancy creates relative difficulties for identity theory, but that these are not insurmountable”. In turn, Churchland has defended her criticism of Libet's research so that, for her, Libet's hypothesis remains “infirm and unconfirmed”. (shrink)

In light of the phenomenon of multiple realizability, many philosophers wanted to preserve the mind-brain identity theory by resorting to a “narrow reductive strategy” whereby one (a) finds mental properties which are (b) sufficiently narrow to avoid the phenomenon of multiple realization, while being (c) explanatorily adequate to the demands of psychological theorizing. That is, one replaces the conception of a mental property as more general feature of cognitive systems with many less general properties, for example, replacing the conception of (...) pain as a general property across different species with a number of species-specific kinds of pain. Many critics focused on (c), arguing that species-specific properties are not explanatorily adequate because they do not capture what is common in pain across species. In this paper I focused on (b). I argued that if one carries the narrow reductive strategy out in such a way to avoid all multiple realizability that occurs within a species, for example, accommodating individual differences by postulating a more narrow pain-relative-to-an-individual-at-a-time, then the result is for all intents and purposes a claim about tokens and not types or properties at all (the position is now about individuals having properties at times, a structured token event). I also added an important point about explanation, viz., that properties-relative-to-individuals-at-times would not serve the explanatory goals of science by failing to generalize to other individuals. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Russell's external world: 1912-1921 by Ronald E. Nusenoff IN "The Relation of Sense-data to Physics",lOur Knowledge ofthe External World,2 and "The Ultimate Constituents ofMatter",3 Russell presents a phenomenalistic reduction ofphysical objects. On this theory, the external world becomes a physical space of six dimensions, which must be logically constructed by a three-dimensional ordering of three-dimensional phenomenal spaces. In what follows, we will consider Russell's varying views, from causal (...) realism in The Problems of Philosophy,4 through phenomenalism, to neutral monism in The Analysis ofMind,5 on the nature ofthe external world. We will pay particular attention to the relation between physical and phenomenal space, and the status ofthe causal theory ofperception. 1. Realism (1912) In The Problems ofPhilosophy, Russell distinguishes a single "real" space ofscience from the "apparent" spaces ofperception. He begins with various cases of perceptual relativity, illusion, etc., and from these infers that those object which are immediately known to us are not the physical objects which the layman might take them to be. Rather, what are immediately known are sense-data, these being caused by, and so in some sense "corresponding" to, physical obI "The Relation of Sense-data to Physics", Scientia, 4 (1914), reprinted as Chapter VIII of Mysticism and Logic and Other Essays (London, 1918). 2 Our Knowledge ofthe External World as a Fieldfor Scientific Method in Philosophy (London, 1914). 3 "The Ultimate Constituents of Matter", Monist, 25 (1915), reprinted as Chapter VII of Mysticism and Logic. 4 The Problems ofPhilosophy (London, 1946 [lst published, 1912]). 5 The Analysis of Mind (London, 1921). 65 66 Russell, nos. 29-32 (1978) jects. Physical objects are located in "one public all-embracing physical space", while "our sense-data are situated in our private spaces, either the space of sight or the space of touch or such vaguer spaces as other senses may give us".6 Through experience, we are able to correlate these various private sense-data spaces (i.e., in so far as we can correlate experiences in one with experiences in another). What Russell does not go on to do here is define physical space in terms of private spaces. Given that (a) Space is relational rather than absolute, and (b) All that we can know about physical objects is that both they and their relations "correspond" to our sense-data and their relations, then (c) "we may assume that there is a physical space in which physical objects have spatial relations corresponding to those which the corresponding sense-data have in our private spaces".7 Our knowledge of physical space is then merely knowledge of relative position, and other features, e.g., shape, are "only supposed to correspond to the physical space so far as is required for the preservation of the order".8 On this view, the existence ofa physical space is necessitated solely by, and so is no more plausible than, the need for physcial objects. Russell's argument for accepting our "instinctive" belief that physical objects exist is less than compelling. Since this belief does not lead to any difficulties, but on the contrary tends to simplify and systemize our account of our experiences, there seems no good reason for rejecting it.9 In what follows, ~e shall see that Russell's phenomenalism is not explainable as differing from the realism found in The Problems of Philosophy merely in the rejection of this "instinctive" belief. II. Phenomenalism (1914-?) In his "Reply to Criticisms" in the Schilpp collection,IO Russell seems to deny that he ever really accepted phenomenalism. 6 The Problems of Philosophy, pp. 30-1 7 Ibid., p. 31. 8 Ibid., p. 33. 9Ibid., p. 24. 10"Reply to Criticisms", in P.A. Schilpp (ed.), The Philosophy ofBertrand Russell (Evanston and Chicago, 1944), pp. 679-741. Russell's external world 67 Mr. Boodin quotes a passage from me according to which it appears that at a certain time I thought only percepts were real. This was a technical hypothesis which I was trying to make logically adequate. II However, only a few pages earlier he had remarked: There are some who would deny that physics need say anything about what cannot... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:The Metaphysics of Practice: Writings on Action, Community, and Obligation by Wilfrid SellarsRonald LoefflerSELLARS, Wilfrid. The Metaphysics of Practice: Writings on Action, Community, and Obligation. Edited by Kyle Ferguson and Jeremy Randel Koons. New York: Oxford University Press, 2023. 745 pp. Cloth, $115.00Wilfrid Sellars thought deeply about ethics, practical reasoning, and intentional agency throughout his career and published extensively on these issues, with much additional unpublished material housed (...) in the Archives of Scientific Philosophy at the University of Pittsburgh. In prominent places Sellars indicates that he regards his ethics as the key to his overarching project of reconciling our manifest nature as norm-governed rational beings with his nominalistic scientific naturalism. Yet with a few noteworthy exceptions, Sellars scholars have only very recently begun to seriously grapple with Sellars’s practical philosophy. No one has done more to initiate this recent trend than Jeremy Koons, who, together with Kyle Ferguson, collects in this volume virtually all of Sellars’s practical philosophical works, including approximately 200 pages of hitherto unpublished material—mostly correspondences with R. M. Hare, Robert Binkley, Hector-Neri Castañeda, Bruce Aune, and David Solomon.Sellars’s published practical philosophical writings are grouped thematically into four parts. A fifth part is dedicated to the unpublished writings. The editors also provide a sixty-page introduction, which offers a synopsis of Sellars’s overall vision of us as practically rational moral [End Page 728] agents, followed by summaries of each of the nineteen essays and the correspondences published in this volume.Sellars thinks of moral ought-judgments as simultaneously motivationally internalistic (with traditional emotivism) and as truth-apt and more or less rational (with traditional cognitivism). His key idea to combine these seemingly incongruent commitments is to regard moral ought-judgments as a species of we-intentions. Since intentions generally are “conceptually tied” to practice, in the sense that (absent interferences or defeaters) they determine proper action in accordance with norms of practical reasoning, we get, in this sense, a version of motivational internalism. Sellars models these normative connections in terms of a nuanced logic of practical reasoning—basically a logic of means–ends reasoning—that is largely parasitic on the logic of theoretical reasoning. This logic is cast in terms of shall-statements, which are linguistic expressions of intentions of the forms “Shall-be [p]” and “Shall [I do A if in C],” where the “Shall-be”s and “Shall”s express the states of intending and the square-bracketed portions the intended contents. Logically proper practical reasoning bottoms out in intentions that immediately give rise to actions (volitions), to be expressed by shall-statements of the form “Shall [I do A now].” Sellars makes the case for the truth-aptness of moral ought-judgments by treating them as a species of we-intentions. Such moral we-intentions are expressed by statements of the form “Shall(we) [We, any of us, do A if in C],” where both the “we” in the content expression and the “we” indexed to the “shall” are maximally inclusive, comprising every rational being at all. This appears to be what today we would call a combined mode and content account of moral we-intentions, where firs-tperson plural elements are built both into the mode of moral we-intending and the content of moral we-intentions. The truth-aptness of moral we-intentions, Sellars thinks, is secured by the fact that the first-person plural elements of the intention include every rational being at all. Sellars maintains that, due to this maximal inclusion, moral we-intentions are apt to yield genuine interpersonal agreement or disagreement (contra I-intentions) and they ground, via what seems to be a transcendental argument, Sellars’s fundamental principle of morality, expressed as “Shall(we) [We, any of us, maximize our general welfare]).” This principle provides the standard of objective moral correctness for any other moral judgment.Part 1 of the volume includes six essays in which Sellars offers comprehensive articulations of this overall picture, culminating in “Objectivity, Intersubjectivity, and the Moral Point of View” (OIM), the stand-alone seventh chapter of Science and Metaphysics, based on Sellars’s 1965–66 John Locke Lectures... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Is Hume A "Classical Utilitarian"? The central notion of utilitarianism is that a right kind of action or a virtuous quality of character is one which in the long run promotes the welfare of society or, as it is frequently stated, which promotes the greatest happiness of the greatest number. But when we try to use the utilitarian concept as a guide for evaluating various possible ultimate distributions of (...) goods among the members of a society, we find there are alternative ways of making this goal more precise. I intend to review briefly five different ways in which the utilitarian goal can be stated more precisely. Then I will consider which one of these more precise formulations most accurately reflects what Hume 2 seems to have had in mind when he spoke of "public utility" or "the good of mankind" or "the true interests of mankind" (ICPM, p. 13) or "public interest and utility "(ICPM, p. 34). II The most effective way of illustrating the vagueness of such phrases as "the welfare of society" or "the greatest happiness of the greatest number" is to consider which of various specific but simple distributions of goods would be preferred by a utilitarian. This technique also is helpful in displaying the differences among the various ways of stating the utilitarian goal in more precise terms. Let us suppose that there are units of "goodness" or "welfare" all 2. of which are equal to each other. These units of "goodness" or "welfare" can be taken from one individual and given to another. Furthermore, the number of such units is not fixed, nor is the number of individuals among whom the units of value will be distributed. The distribution of goods among individuals is to be considered in a completely abstract way so that no individuals are to be more deserving then any others. In fact, from a utilitarian point of view, various actions and qualities of character are to be evaluated in terms of whether in the long run they hinder or promote the ideal distribution of goods being considered. To illustrate this technique, let us examine two conceivable distributions of goods. Individual Scheme I Scheme II A 5 10 B 5 3 C 5 3 In Scheme I there are fifteen units of goodness divided evenly among the three individuals A, B, and C. In Scheme II there are sixteen units of goodness distributed in such a way that A has twice as many units as he had in Scheme I while B and C have only three units each. Given that the utilitarian wants to promote the greatest happiness of the greatest number, which Scheme would he choose to promote, 4 Scheme I or Scheme II? One variety of utilitarianism, the first of five to be distinguished, opts for Scheme II on grounds that the total number of units of welfare is greater (16 to only 15 for Scheme I). The emphasis here is on the first half of the utilitarian formula of "the greatest happiness for the greatest number" ; the aim is to increase the total amount of happiness. This view is usually called "classical utilitarianism " on grounds that it supposedly was the view championed by the classical utilitarians (Shaftesbury, Hutcheson, 5 Hume, Adam Smith, Bentham, J. S. Mill, and Sidgwick). A second variety of utilitarianism would opt for Scheme 3. I in the comparison given above on grounds that two individuals (B and C) would be better off with Scheme I while only one individual (A) would be better off with Scheme II. The emphasis here is on the second half of the utilitarian formula ; the aim is to increase the number of individuals who are better off. This view can be called "self-interest-vote utilitarianism" on grounds that the preferred scheme is the one which gets the most votes when each person votes in terms of his own self-interest. (Note that this interpretation of utilitarianism can be used only when the Schemes being compared have the same number of persons sharing the goods. ) A third variety of utilitarianism is that which declares the goal to be maximizing the average units of welfare available per person. As long... (shrink)

An inquiry into the nature of the universe draws out the implications of the quantum theory and argues that our universe is only one among many possible universes and that other universes may exist.

The author is primarily concerned with the explanation of behavior in regard to (1) the mecanical model, (2) the effects of physical-organic processes on behavior, (3) the lack of understanding between philosophers and psychologists as to sufficient conditions for predicting a behavioral event, (4) conditions leading to expalantions of behavior that could predict behavior exclusive of any antecedent psychological behavior, and (5) variations of the mechanical-model introducing differing sorts of explanation. (staff).

An instrument to assess 'ethical sensitivity' has been developed. The instrument presents four clinical vignettes and the respondent is asked to list the ethical issues related to each vignette. The responses are classified, post hoc, into the domains of autonomy, beneficence and justice. This instrument was used in 1990 to assess the ethical sensitivity of students in all four medical classes at the University of Toronto. Ethical sensitivity, as measured by this instrument, is not related to age or grade-point average. (...) Sensitivity increases between the 1st and 2nd year and then decreases throughout the rest of undergraduate medical training, such that the 4th-year students identify fewer issues than those entering medical school. Students expressing a career choice of family medicine identify more issues than their peers. Several problems with the use of the instrument and the interpretation of the data were found. Nonetheless, these findings, if reproducible, are important and their meaning needs further discussion. (shrink)

There have been many claims that quantum mechanics plays a key role in the origin and/or operation of biological organisms, beyond merely providing the basis for the shapes and sizes of biological molecules and their chemical affinities. These range from Schr¨odinger’s suggestion that quantum fluctuations produce mutations, to Hameroff and Penrose’s conjecture that quantum coherence in microtubules is linked to consciousness. I review some of these claims in this paper, and discuss the serious problem of decoherence. I advance some further (...) conjectures about quantum information processing in bio-systems. Some possible experiments are suggested. © 2004 Elsevier Ireland Ltd. All rights reserved. (shrink)

Given a physical system, one knows that there is a logical duality between its properties and its states. In this paper, we choose its states as the undefined notions of our axiomatic construction. In fact, by means of well-motivated assumptions expressed in terms of a transition probability function defined on the set of all pure states of the system, we construct a system of elementary propositions, i.e., a complete orthomodular atomic lattice satisfying the covering law. We also study in this (...) framework the important notion of compatibility of propositions, and we define the superpositions and the mixtures of the states of the physical system. (shrink)

Part I Introduction -/- Passion at a Distance (Don Howard) -/- Part II Philosophy, Methodology and History -/- Balancing Necessity and Fallibilism: Charles Sanders Peirce on the Status of Mathematics and its Intersection with the Inquiry into Nature (Ronald Anderson) -/- Newton’s Methodology (William Harper) -/- Whitehead’s Philosophy and Quantum Mechanics (QM): A Tribute to Abner Shimony (Shimon Malin) -/- Bohr and the Photon (John Stachel) -/- Part III Bell’s Theorem and Nonlocality A. Theory -/- Extending the Concept of (...) an “Element of Reality” to Work with Inefficient Detectors (Daniel M. Greenberger) -/- A General Proof of Nonlocality without Inequalities for Bipartite States (GianCarlo Ghirardi and Luca Marinatto) -/- On the Separability of Physical Systems (Jon P. Jarrett) -/- Bell Inequalities: Many Questions, a Few Answers (Nicolas Gisin) -/- B. Experiment -/- Do Experimental Violations of Bell Inequalities Require a Nonlocal Interpretation of Quantum Mechanics? II: Analysis a la Bell (Edward S. Fry, Xinmei Qu, and Marlan O. Scully) -/- The Physics of 2 = 1 + 1 (Yanhua Shih) -/- Part IV Probability, Uncertainty, and Stochastic Modifications of Quantum Mechanics -/- Interpretations of Probability in Quantum Mechanics: A Case of “Experimental Metaphysics” (Geoffrey Hellman) -/- “No Information Without Disturbance”: Quantum Limitations of Measurement (Paul Busch) -/- How Stands Collapse II (Philip Pearle) -/- Is There a Relation Between the Breakdown of the Superposition Principle and an Indeterminacy in the Structure of the Einsteinian Space-Time? (Andor Frenkel) -/- Indistinguishability or Stochastic Dependence? (D. Costantini and U. Garibaldi) -/- Part V Relativity -/- Plane Geometry in Spacetime (N. David Mermin) -/- The Transient nows (Steven F. Savitt) -/- Quantum in Gravity? (Michael Horne) -/- A Proposed Test of the Local Causality of Spacetime (Adrian Kent) -/- Quantum Gravity Computers: On the Theory of Computation with Indefinite Causal Structure (Lucien Hardy) -/- “Definability,” “Conventionality,” and Simultaneity in Einstein–Minkowski Space-Time (Howard Stein) -/- Part VI Concluding Words -/- Bistro Banter: A Dialogue with Abner Shimony and Lee Smolin -/- Unfinished Work: A Bequest (Abner Shimony) -/- Bibliography of Abner Shimony. (shrink)

Institute of Theoretical Astronomy, University of Cambridge, Cambridge, UK 3fS. received 28th August 1970, in final revised form 1st July 1971..

Paul Davies explains the significance of the amazing quantum universe, where fact is stranger than any science fiction. He takes us into a world where commonsense notions of space, time, and causality must be left behind as the realm of solid matter dissolves into vibrating patterns of ghostly energy, and where mind and matter are interwoven in a subtle and holistic manner. An Australian physicist and author of GOD AND THE NEW PHYSICS, Davies writes for the lay reader in simple (...) language. (shrink)

Recent advances in string theory and inflationary cosmology have led to a surge of interest in the possible existence of an ensemble of cosmic regions, or “universes”, among the members of which key physical parameters, such as the masses of elementary particles and the coupling constants, might assume different values. The observed values in our cosmic region are then attributed to an observer selection effect (the so-called anthropic principle). The assemblage of universes has been dubbed “the multiverse”. In this paper (...) we review the multiverse concept and the criticisms that have been advanced against it on both scientific and philosophical grounds. (shrink)