This paper clarifies the notion of "contact with reality" by investigating one way in which lack of such contact can be expressed: the interrogative attitude. The case of a socially withdrawn, seventeen-year-old schoolboy is examined. Paul C. had long been overly logical and precise in his style of thinking. An acute disturbance began with mental fatigue along with apparent obsessive symptoms (e.g., extreme monitoring of his own actions) to the point that simple, everyday actions became very time-consuming; he also developed (...) a tendency to ask endless questions even about trivial phenomena. However, unlike those of the true obsessive, Paul's monitoring, doubting, and querying seemed to lack any emotional or personal element; he was not anxious but, rather, apathetic. Also, Paul lacked real curiosity: To him, everything had the same level of importance, and his attention was not directed by any precise or personal goal. This paper argues that Paul's interrogative attitude was actually a form of autistic-schizophrenic thinking characterized by "pragmatic weakening" and a loss of vital contact with reality, which are consequences of a weakening of the "élan vital" with its "vital propulsion toward the future." Such patients retain their intellectual powers but do not use these powers in accord with the requirements of reality. The interrogative attitude can be seen as a compensation mechanism—a way to maintain some minimal contact with the world. The paper ends with psychotherapeutic recommendations. (Abstract written by special issue editor: L.A.S.). (shrink)

If Einstein's equations are to describe a field theory of gravity in Minkowski spacetime, then causality requires that the effective curved metric must respect the flat background metric's null cone. The kinematical problem is solved using a generalized eigenvector formalism based on the Segré classification of symmetric rank 2 tensors with respect to a Lorentzian metric. Securing the correct relationship between the two null cones dynamically plausibly is achieved using the naive gauge freedom. New variables tied to the generalized (...) eigenvector formalism reduce the configuration space to the causality-respecting part. In this smaller space, gauge transformations do not form a group, but only a groupoid. The flat metric removes the difficulty of defining equal-time commutation relations in quantum gravity and guarantees global hyperbolicity. (shrink)

Observational indications combined with analyses of analogue and emergent gravity in condensed matter systems support the possibility that there might be two distinct energy scales related to quantum gravity: the scale that sets the onset of quantum gravitational effects $E_{\rm B}$ (related to the Planck scale) and the much higher scale $E_{\rm L}$ signalling the breaking of Lorentz symmetry. We suggest a natural interpretation for these two scales: $E_{\rm L}$ is the energy scale below which a special relativistic spacetime emerges, (...) $E_{\rm B}$ is the scale below which this spacetime geometry becomes curved. This implies that the first ‘quantum’ gravitational effect around $E_{\rm B}$ could simply be that gravity is progressively switched off, leaving an effective Minkowski quantum field theory up to much higher energies of the order of $E_{\rm L}$ . This scenario may have important consequences for gravitational collapse, inasmuch as it opens up new possibilities for the final state of stellar collapse other than an evaporating black hole. (shrink)

In this two-part essay, we distinguish several senses in which general relativity has been regarded as “locally special relativistic.” Here, in Part 1, we focus on senses in which a relativistic spacetime has been said to be “locally (approximately) Minkowskian.” After critiquing several proposals in the literature, we present a result capturing a substantive sense in which every relativistic spacetime is locally approximately Minkowskian. We then show that Minkowski spacetime is not distinguished in this result: every relativistic spacetime is (...) locally approximately every other spacetime in the same sense. In Part 2, we will consider “locally specially relativistic” matter theories. (shrink)

In a recent paper, David Albert has suggested that no quantum theory can yield a description of the world unfolding in Minkowski spacetime. This conclusion is premature; a natural extension of Stein's notion of becoming in Minkowski spacetime to accommodate the demands of quantum nonseparability yields such an account, an account that is in accord with a proposal which was made by Aharonov and Albert but which is dismissed by Albert as a ‘mere trick’. The nature of such (...) an account is clarified by an extension to a relativistic quantum context of David Lewis' picture of objective chances evolving in time. 1 Introduction 2 Classical relativistic becoming 3 Relativistic quantum becoming, without collapse 4 Relativistic quantum becoming, with collapse 5 Objective chance, conditional probability, and definite properties 6 The nature of the wave function 7 Conclusion. (shrink)

Like his earlier study The Phenomenological Movement, Spiegelberg’s latest work is a comprehensive overview—not of the phenomenological movement itself —but of its influence on psychology and psychiatry. Its aim is to show that the presence of phenomenology in these disciplines has broadened the perspectives of these empirical sciences and has loosened the death-grip that positivism and naturalism, behaviorism and atomistic associationism, might otherwise have exerted upon them, Spiegelberg does this "concretely" by a wide ranging account of philosophers, psychologists and psychiatrists (...) which testifies again to his great erudition and incomparable familiarity with phenomenological literature. The index of authors studied covers six pages of double columns. Part One gives a "general orientation" to the field, discussing first the notion of phenomenological psychology and then the presence of phenomenology in psychology, in psychopathology and psychiatry, in psychoanalysis and in American psychology. The second half of the book is devoted to more concentrated studies of "leading figures" and devotes entire chapters to such thinkers as Jaspers, Binswagner, Minkowski, Buytendijk and Frankl. The American student of phenomenology is once again the beneficiary of Spiegelberg’s conscientious and incisive scholarship the beneficiary of Spiegelberg’s conscientious and incisive scholarship.—J. D. C. (shrink)

The massless Thirring model of a self-interacting ferinion field in a curved two-dimensional background spacetime is considered. The exact operator solution for the fields and the equation for the two-point function are given and used to examine the radiation emitted by a two-dimensional black hole. The radiation is found to be thermal in nature, confirming general predictions to this effect. We compute the particle spectrum of the Thirring fermions at finite temperature in Minkowski space and point out errors in (...) a previous attempt at this calculation. Finally we calculate the vacuum expectation value of the stress tensor in an arbitrary two-dimensional spacetime by exploiting the connection between the thermal Hawking radiation from a black hole and the value of the so-called conformal trace anomaly. The latter is also computed quite independently, using dimensional regularization, from general considerations of the renormalization group. (shrink)

We formulate Suppes predicates for various kinds of space-time: classical Euclidean, Minkowski's, and that of General Relativity. Starting with topological properties, these continua are mathematically constructed with the help of a basic algebra of events; this algebra constitutes a kind of mereology, in the sense of Lesniewski. There are several alternative, possible constructions, depending, for instance, on the use of the common field of reals or of a non-Archimedian field. Our approach was inspired by the work of Whitehead, though (...) our philosophical stance is completely different from his. The structures obtained are idealized constructs underlying extant, physical space-time. (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)

It will be argued that Minkowski's implementation of distances is inconsistent. An alternative implementation will be proposed. In the new model the proper time of an object is taken as its fourth coordinate. Distances will be measured according to a four dimensional Euclidean metric. In the present approach mass is a constant of motion. A mass can therefore be ascribed to photons and neutrinos. Mechanics and dynamics will be reformulated in close correspondence with classical physics. Of particular interest is (...) the equation of motion for the proper time momentum. In the classical limit it reduces to the classical law of conservation of (kinetic+potential) energy. In the relativistic limit it is similar to the conservation of energy of the theory of relativity. The conservation of proper time momentum allows for an alternative explanation for Compton scattering and pair annihilation. On the basis of the proper time formulation of electrodynamics also an alternative explanation will be offered for the spectra of hydrogenic atoms. The proper time formulation of gravitational dynamics leads to the correct predictions of gravitational time dilation, the deflection of light and the precession of the perihelia of planets. For this no curvature will be needed. That is, spacetime is flat everywhere, even in the presence of sources of gravitation. Some cosmological consequences will be discussed. The present approach gives a new notion to energy, antiparticles and the structure of spacetime. The contents of the present paper will have important implications for the foundations of physics in general. (shrink)

We formulate Suppes predicates for various kinds of space-time: classical Euclidean, Minkowski's, and that of General Relativity. Starting with topological properties, these continua are mathematically constructed with the help of a basic algebra of events; this algebra constitutes a kind of mereology, in the sense of Lesniewski. There are several alternative, possible constructions, depending, for instance, on the use of the common field of reals or of a non-Archimedian field (with infinitesimals). Our approach was inspired by the work of (...) Whitehead (1919), though our philosophical stance is completely different from his. The structures obtained are idealized constructs underlying extant, physical space-time. (shrink)

Contrary to the predominant way of doing physics, we claim that the geometrical structure of a general differentiable space-time manifold can be determined from purely dynamical considerations. Anyn-dimensional manifoldV a has associated with it a symplectic structure given by the2n numbersp andx of the2n-dimensional cotangent fiber bundle TVn. Hence, one is led, in a natural way, to the Hamiltonian description of dynamics, constructed in terms of the covariant momentump (a dynamical quantity) and of the contravariant position vectorx (a geometrical quantity). (...) That is, the Hamiltonian description furnishes a natural way of relating dynamics and geometry. Thus, starting from the Hamiltonian state function (for a particle)—taken as the fundamental dynamical entity—we show that general relativistic physics implies a general pseudo-Riemannian geometry, whereas the physics of the special theory of relativity is tied up with Minkowski space-time, and nonrelativistic dynamics is bound up to Newton-Cartan space-time. (shrink)

Like his earlier study The Phenomenological Movement, Spiegelberg’s latest work is a comprehensive overview—not of the phenomenological movement itself —but of its influence on psychology and psychiatry. Its aim is to show that the presence of phenomenology in these disciplines has broadened the perspectives of these empirical sciences and has loosened the death-grip that positivism and naturalism, behaviorism and atomistic associationism, might otherwise have exerted upon them, Spiegelberg does this "concretely" by a wide ranging account of philosophers, psychologists and psychiatrists (...) which testifies again to his great erudition and incomparable familiarity with phenomenological literature. The index of authors studied covers six pages of double columns. Part One gives a "general orientation" to the field, discussing first the notion of phenomenological psychology and then the presence of phenomenology in psychology, in psychopathology and psychiatry, in psychoanalysis and in American psychology. The second half of the book is devoted to more concentrated studies of "leading figures" and devotes entire chapters to such thinkers as Jaspers, Binswagner, Minkowski, Buytendijk and Frankl. The American student of phenomenology is once again the beneficiary of Spiegelberg’s conscientious and incisive scholarship the beneficiary of Spiegelberg’s conscientious and incisive scholarship.—J. D. C. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Philosophy, Psychiatry, & Psychology 8.4 (2001) 299-301 [Access article in PDF] Reading Minkowski with Husserl Bernard Pachoud Eugene Minkowski is generally regarded as one of the main figures of the phenomenological strand of psychiatry in France. However, it is striking that, as a phenomenologist, he very rarely mentions Husserl or Heidegger in his texts. Nor, for that matter, does he use their concepts or rely on their (...) descriptions (except in a few texts entirely devoted to the presentation of the philosophical roots of phenomenology). Actually, the philosopher he most often refers to, and whose concepts he borrows, is Bergson, who is not a phenomenologist. But although Minkowski's framework is not phenomenological in the philosophical sense of the term, his clinical descriptions are certainly based on a genuinely phenomenological approach—in the sense that they deal with the subjective experience of patients and the way in which their experience determines their behavior. It is all the more striking to notice just how much his descriptions of abnormal experiences echo certain Husserlian studies that he seems to ignore. I will focus on some common points between Minkowski's clinical descriptions and Husserlian studies that Minkowski could not, in fact, have known at the time of writing this article (at least in their complete form, since they were developed after 1923).The present text, "A Contribution to the Study of Autism: The Interrogative Attitude," is a typical example of Minkowski's clinical descriptions and theoretical interests. The interrogative attitude of the patient Paul C. is considered by Minkowski to be one of the "schizophrenic attitudes," expressing what he calls "loss of contact with reality," a phenomenon held to be characteristic of schizophrenia. These attitudes are quite simply the modalities of schizophrenic "autism" in Bleuler's sense of the latter term. Minkowski (1925) distinguishes the attitudes of withdrawal that have an affective coloring (morbid daydreaming, sulking, and regrets) from those that are purely intellectual (morbid rationalism, the interrogative attitude, the morbid hypertrophy of geometric and static factors). What gives a pathological cast to Paul C.'s systematically interrogative attitude is that it expresses (following Minkowski's clinical description) the patient's inability to engage in action or to establish any practical relationship with reality. This interrogative attitude can be considered a way to take some initiative and thereby avoid complete passivity, but it is a deficient mode of "position taking" since there is no engagement in real action.This emphasis on disorder of action has a modern sound, for it echoes theoretical hypotheses regarding schizophrenia developed by contemporary neuroscientists (Frith 1992). It also echoes the Husserlian studies of perception, in which the feeling of reality largely depends on the strong connection between perception and voluntary movement (action), kinesthetic sensations playing here a key role (Husserl 1989). There are also some remarkable convergences [End Page 299] with Husserl's studies of the active and passive dimensions of consciousness, to be considered next. Husserl's Studies of the Activity and Passivity of Consciousness The main claim of transcendental phenomenology is that our experience completely depends on what Husserl calls the synthetic activity of consciousness. Everything that we become aware of is constituted by the activity of the mind. In texts written between 1918 and 1926 and gathered together under the title, "Analysis of Passive Synthesis," Husserl (1966) distinguishes different degrees of the activity of consciousness, depending on whether or not the ego has the initiative. Mainly, two kinds of activity are described, one depending on the subject (the ego) and requiring his initiative, the other occurring, so to say, in an anonymous, automatic way, elicited by the object, and labeled for this reason "passive synthesis." In other words, when experience relies on synthetic activity, Husserl distinguishes synthetic acts initiated by the ego (the genuine acts) from those that occur in consciousness in an automatic, passive way. Accordingly, the activity of consciousness turns out never to be a pure activity; it always occurs against a background of passivity. Most often, the act is a response to prior stimulation given passively, and it is through this act that the "I" discovers itself as a... (shrink)

In the covariant Hamiltonian mechanics with action-at-a-distance, we compare the proper time and dynamical time representations of the coordinate space world line using the differential geometry of nongeodesic curves in 3+1 Minkowski spacetime. The covariant generalization of the Serret-Frenet equations for the point particle with interaction are derived using the arc length representation. A set of invariant point particle kinematical properties are derived which are equivalent to the solutions of the equations of motion in coordinate space and which are (...) functions of either the proper time or the dynamical time. Expressions for the quantities are given for the example of the covariant harmonic oscillator and comments are offered regarding the measurability of the dynamical time. (shrink)

Recently the neglected issue of the causal structure in the flat space-time approach to Einstein's theory of gravity has been substantially resolved. Consistency requires that the flat metric's null cone be respected by the null cone of the effective curved metric. While consistency is not automatic, thoughtful use of the naive gauge freedom resolves the problem. After briefly recapitulating how consistent causality is achieved, we consider the flat Robertson–Walker Big Bang model. The Big Bang singularity in the spatially flat Robertson–Walker (...) cosmological model is banished to past infinity in Minkowski space-time. A modified notion of singularity is proposed to fit the special relativistic approach, so that the Big Bang becomes nonsingular. (shrink)

Already in 1835 Lobachevski entertained the possibility of multiple geometries of the same type playing a role. This idea of rival geometries has reappeared from time to time but had yet to become a key idea in space-time philosophy prior to Brown's _Physical Relativity_. Such ideas are emphasized towards the end of Brown's book, which I suggest as the interpretive key. A crucial difference between Brown's constructivist approach to space-time theory and orthodox "space-time realism" pertains to modal scope. Constructivism takes (...) a broad modal scope in applying to all local classical field theories---modal cosmopolitanism, one might say, including theories with multiple geometries. By contrast the orthodox view is modally provincial in assuming that there exists a _unique_ geometry, as the familiar theories have. These theories serve as the "canon" for the orthodox view. Their historical roles also suggest a Whiggish story of inevitable progress. Physics literature after c. 1920 is relevant to orthodoxy primarily as commentary on the canon, which closed in the 1910s. The orthodox view explains the spatio-temporal behavior of matter in terms of the manifestation of the real geometry of space-time, an explanation works fairly well within the canon. The orthodox view, Whiggish history, and the canon have a symbiotic relationship. If one happens to philosophize about a theory outside the canon, space-time realism sheds little light on the spatio-temporal behavior of matter. Worse, it gives the _wrong_ answer when applied to an example arguably _within_ the canon, a sector of Special Relativity, namely, _massive_ scalar gravity with universal coupling. Which is the true geometry---the flat metric from the Poincare' symmetry group, the conformally flat metric exhibited by material rods and clocks, or both---or is the question faulty? How does space-time realism explain the fact that all matter fields see the same curved geometry, when so many ways to mix and match exist? Constructivist attention to dynamical details is vindicated; geometrical shortcuts can disappoint. The more exhaustive exploration of relativistic field theories in particle physics, especially massive theories, is a largely untapped resource for space-time philosophy. (shrink)

In this paper, we attempt to explicate Salmon’s idea of a causal process, as defined in terms of the mark method, in the context of C*-dynamical systems. We prove two propositions, one establishing mark manifestation infinitely many times along a given interval of the process, and, a second one, which establishes continuous manifestation of mark with the exception of a countable number of isolated points. Furthermore, we discuss how these results can be implemented in the context of the Haag–Araki theories (...) of relativistic quantum fields on Minkowski spacetime. (shrink)

The relationship between Albert Einstein’s special theory of relativity and Hendrik A. Lorentz’s ether theory is best understood in terms of competing interpretations of Lorentz invariance. In the 1890s, Lorentz proved and exploited the Lorentz invariance of Maxwell’s equations, the laws governing electromagnetic fields in the ether, with what he called the theorem of corresponding states. To account for the negative results of attempts to detect the earth’s motion through the ether, Lorentz, in effect, had to assume that the laws (...) governing the matter interacting with the fields are Lorentz invariant as well. This additional assumption can be seen as a generalization of the well-known contraction hypothesis. In Lorentz’s theory, it remained an unexplained coincidence that both the laws governing fields and the laws governing matter should be Lorentz invariant. In special relativity, by contrast, the Lorentz invariance of all physical laws directly reflects the Minkowski space-time structure posited by the theory. One can use this observation to produce a common-cause argument to show that the relativistic interpretation of Lorentz invariance is preferable to Lorentz’s interpretation. (shrink)

In this paper, I reconstruct an argument of Aristidis Arageorgis against empirical underdetermination of the state of a physical system in a C*-algebraic setting and explore its soundness. The argument, aiming against algebraic imperialism, the operationalist attitude which characterized the first steps of Algebraic Quantum Field Theory, is based on two topological properties of the state space: being T1 and being first countable in the weak*-topology. The first property is possessed trivially by the state space while the latter is highly (...) non-trivial, and it can be derived from the assumption of the algebra of observables’ separability. I present some cases of classical and of quantum systems which satisfy the separability condition, and others which do not, and relate these facts to the dimension of the algebra and to whether it is a von Neumann algebra. Namely, I show that while in the case of finite-dimensional algebras of observables the argument is conclusive, in the case of infinite-dimensional von Neumann algebras it is not. In addition, there are cases of infinite-dimensional quasilocal algebras in which the argument is conclusive. Finally, I discuss Porrmann's construction of a net of local separable algebras in Minkowski spacetime which satisfies the basic postulates of Algebraic Quantum Field Theory. (shrink)

The physical, mathematical, and philosophical foundations of the quantum theory of free Bose fields in fixed general relativistic spacetimes are examined. It is argued that the theory is logically and mathematically consistent whereas semiclassical prescriptions for incorporating the back-reaction of the quantum field on the geometry lead to inconsistencies. Still, the relations and heuristic value of the semiclassical approach to canonical and covariant schemes of quantum gravity-plus-matter are assessed. Both conventional and rigorous formulations of the theory and of its principal (...) predictions, cosmological particle creation and horizon radiation, are expounded and compared. Special attention is devoted to spacetime properties needed for the existence or uniqueness of the relevant theoretical elements , renormalization of the stress tensor). The emergence of unitarily inequivalent representations in a single dynamical context is used as motivation for the introduction of the abstract $\rm C\sp{\*}$-algebraic axiomatic formalism. The operationalist and conventionalist claims of the original abstract algebraic program are criticized in favor of its tempered outgrowth, local quantum physics. The interpretation of the theory as a wave mechanics of classical field configurations, deriving from the Schrodinger representations of the abstract algebra, is discussed and is found superior, at least on the level of analogy, to particle or harmonic oscillator interpretations. Further, it is argued that the various detector results and the Fulling nonuniqueness problem do not undermine the particle concept in the ways commonly claimed. In particular, arguments are offered against the attribution of particle status to the Rindler quanta, against the physical realizability of the Rindler vacuum, and against the more general notion of observer-dependence as to the definition of 'particle' or 'vacuum'. However, the question of the ontological status of particles is raised in terms of the consistency of quantum field theory with non-reductive realism about particles, the latter being conceived as entities exhibiting attributes of discreteness and localizability. Two arguments against non-reductive realism about particles, one from axiomatic algebraic local quantum theory in Minkowski spacetime and one from quantum field theory in curved spacetime, are developed. (shrink)

Editorial: the second phenomenology, by A. T. Tymieniecka.--Roman Ingarden, critique de Bergson, par J. M. Fataud.--Some remarks on the ego in the phenomenology of Husserl, by C. van Peursen.--The empirical and transcendental ego, by M. Natanson.--Rencontre et dialogue, par E. Minkowski.--Quelques thèmes d'une phénoménologie de rêve, par J. Héring.--Man and his life-world, by J. Wild.--Die Verwirklichung des Wesens in der Sprache der Dichtung: Gustave Flaubert, von F. Kaufmann.--Le langage de la poésie, par J. F. Mora.--L'analyse de l'idée et la (...) participation, par A. T. Tymieniecka. (shrink)

A new theory is considered according to which extended objects in n-dimensional space are described in terms of multivector coordinates which are interpreted as generalizing the concept of center of mass coordinates. While the usual center of mass is a point, by generalizing the latter concept, we associate with every extended object a set of r-loops, r=0,1,...,n−1, enclosing oriented (r+1)-dimensional surfaces represented by Clifford numbers called (r+1)-vectors or multivectors. Superpositions of multivectors are called polyvectors or Clifford aggregates and they are (...) elements of Clifford algebra. The set of all possible polyvectors forms a manifold, called C-space. We assume that the arena in which physics takes place is in fact not Minkowski space, but C-space. This has many far reaching physical implications, some of which are discussed in this paper. The most notable is the finding that although we start from the constrained relativity in C-space we arrive at the unconstrained Stueckelberg relativistic dynamics in Minkowski space which is a subspace of C-space. (shrink)

Recently, Clifton and Halvorson have tried to salvage a particle phenomenology in the absence of particle ontology within algebraic relativistic quantum field theory. Their idea is that the detection of a particle is the measurement of a local observable which simulates the measurement of an almost local observable that annihilates the vacuum. In this note, we argue that the measurements local particle detections are supposed to simulate probe radically holistic aspects of relativistic quantum fields. We prove that in an axiomatic (...) (Haag-Araki) quantum field theory on Minkowski spacetime, formulated in a Hilbert space $\mathcal{H}$ , there is no positive observable C, with norm less than or equal to 1, satisfying the conditions: (1) the expectation value of C in the vacuum state Ω is zero, (2) there is at least one vector state Ψ in $\mathcal{H}$ in which the expectation value of C is different from zero, and (3) there exists at least one spacetime region $\mathcal{O}$ such that the non-selective measurement of C leaves the expectation values of all observables in the local algebra of that region unaltered regardless of the state the system is in. The result reveals a tension between intuitions regarding localization and intuitions regarding causality: to save “particle phenomena” in the absence of particle ontology, one has to feign “particle” detectors with “good” properties as to locality but “bad” behavior as to causality. (shrink)

One Seit Platon (mit dem Spott von Diogenes) über Kant ist die Fundamentalfrage "Was ist der Mensch?" bis heute nicht nur von der Philosophie (als regina scientiarum), sondern von der Wissenschaft überhaupt nicht beantwortet. Phänomenologisch hat der Mensch a posteriori physische (somatische), psychische(perceptio, emotio, cognitio), mentale (logische), spirituelle (conscientia, volitio, actio) "Sphären". Ontologisch in Kontext von to ti en einai (Aristoteles) sollte der Mensch a priori ein "Programm" (Information) vor der Kosmogonie haben. Der (Neo‐) Positivismus (z.B. Hume bis Carnap, Russel*; (...) * Nobel Laureate) verwirft Fragen der Metaphysik als Scheinprobleme. Damit bleibt das Menschen‐Wesen in Kontext von Postulaten, wie res cogitans (Descartes), Monaden(Leibniz), "Gott, Freiheit, Unsterblichkeit", Seligkeit und (moralischer) Vollkommenheit (Kant), absoluter Geist (Hegel) in der theologischen Dimension. Antwort könnte eine zukünftige (holistisch‐multidimensionale) philosophische theoretische und Experimentaltheologie (kontrollierbare Beobachtung) durch weitere Forschung geben, in Kontext (bzw. Existenz) von A. Physikotheologie bzw. (a) höhere (als drei) geometrische/physikalische Dimensionen (Hilbert, Riemann /Friedmann, Minkowski, Schmutzer), (b) Paralleluniversen (z.B. L. Randall), (c) Quantentheorie/‐philosophie (Planck*, u.a.), (d) Gravitations‐/Relativitätstheorie (Newton/Einstein*), (e) Vakuumenergie (Sato), etc. B. ChemoBiotheologie bzw. "psychischen" (Fechner) und "spezifischen" (Joh. Müller) Energien,"biologischem Feld" (Gurwitsch), künstlicher Biogenese (Oparin, Fox, Urey*, u.a.; 32 Fragen von John Bernal). C. Psychotheologie bzw. parapsychische Phänomene (Carrel*, Richet*/France, Rhinne/USA, Vassilev, Bechterew/Russia, etc.). D. Religionstheologie: (über‐) Bewußtsein, übersinnliche, immaterielle, supraphysikalische Phänomene (Sri Aurobindo, Dalai Lama*, Konfuzius/Laotse, Gopi Krishna, Papst Benedikt, Paramahansa Yogananda, Sri Yogendra, etc.)und ihre physiologische Begründung (Anand/Chinna, Kasamatsu/Hirai, Ornstein, Pauli*, von Weizsäcker, etc.). Damit hängt die ontologische Frage nach dem MenschenWesen mit der Lösung des Problemkomplexes "Gott Geist/Seele Mensch Natur" zusammen. (shrink)

A linear wave field in its Minkowski ground state is analyzed heuristically by two observers, one inertial, the other accelerating in a linear and uniform way. Relative to the accelerated observer, the zero-point oscillations of each Minkowski plane wave mode have an unusual Fourier spectrum. Its intensity is (i) the same for all plane wave modes, (ii) isotropic, and (iii) that of a thermal ambience (relative to the accelerated frame). The temperature of this ambience is given by the (...) Davies-Unruh formula kT=(ħ/2π)(g/c). The existence of this ambience is incompatible with the requirement that the laws of nature be formulated in terms of tensors. (shrink)

Western societies today are coming unmoored in the face of an earth-shaking ethical and cultural paradigm shift. At its core is the question of what it means to be human and how we are meant to live. The old answers are no longer accepted; a dizzying array of options are offered in their stead. Underpinning this smorgasbord of lifestyles is a thicket of unquestioned assumptions, such as the separation of gender from biological sex, which not so long ago would have (...) been universally rejected as radical notions. In the spring of 2019, a group of Orthodox Christian scholars drawn from a wide variety of academic disciplines met together to offer responses to the moral crisis our generation faces, elaborating upon its various forms and facilitating a fuller understanding of some of its theological and philosophical foundations. In doing so they offer support to all those who question the claims that are so forcefully insisted upon today--a clarity that will aid them in standing up and resisting trends that have already shown to be the cause of great suffering and unhappiness. (shrink)

Editorial: the second phenomenology, by A. T. Tymieniecka.--Roman Ingarden, critique de Bergson, par J. M. Fataud.--Some remarks on the ego in the phenomenology of Husserl, by C. van Peursen.--The empirical and transcendental ego, by M. Natanson.--Rencontre et dialogue, par E. Minkowski.--Quelques thèmes d'une phénoménologie de rêve, par J. Héring.--Man and his life-world, by J. Wild.--Die Verwirklichung des Wesens in der Sprache der Dichtung: Gustave Flaubert, von F. Kaufmann.--Le langage de la poésie, par J. F. Mora.--L'analyse de l'idée et la (...) participation, par A. T. Tymieniecka. (shrink)

Currently, humanity is experiencing an explosive growth in technological objects designed to improve the body and mind. The main objective of this article is to review two recent classificatory and explanatory systems to cognitive enhancement cybernetic technologies, including both wearable and implantable artifacts that reorganize human embodiment or extend the mind. I argue that an outdated model of the cognitive sciences serves as the basis for these revised systems and taxonomies. Taking an embodied approach to the cognitive sciences, I propose (...) an alternative focus to classify cognitive enhancement cybernetic technologies. Specifically, by adopting a non-orthodox enactive approach to embodied cognition, I propose a new classificatory system that redefines the notion of the cybernetically enhanced human, restricting it to a purely cognitive context. Finally, I evaluate some philosophical implications of my system. (shrink)

An axiomatic framework for describing general space-time models is presented. Space-time models to which irreducible propositional systems belong as causal logics are quantum (q) theoretically interpretable and their event spaces are Hilbert spaces. Such aq space-time is proposed via a “canonical” quantization. As a basic assumption, the time t and the radial coordinate r of aq particle satisfy the canonical commutation relation [t,r]=±i $h =$ . The two cases will be considered simultaneously. In that case the event space is the (...) Hilbert space L2(ℝ3). Unitary symmetries consist of Poincaré-like symmetries (translations, rotations, and inversion) and of gauge-like symmetries. Space inversion implies time inversion. Thisq space-time reveals a confinement phenomenon: Theq particle is “confined” in an $h =$ size region of Minkowski space $\mathbb{M}^4$ at any time. One particle mechanics overq space-time provides mass eigenvalue equations for elementary particles. Prugovečki's stochasticq mechanics andq space-time offer a natural way for introducing and interpreting consistently such aq space-time andq particles existing in it. The mass eigenstates ofq particles generate Prugovečki's extended elementary particles. When $h =$ →0, these particles shrink to point particles and $\mathbb{M}^4$ is recovered as the classical (c) limit ofq space-time. Conceptual considerations favor the case [t,r]=+i $h =$ , and applications in hadron physics give the fit $h =$ ⋍2/5 fermi/GeV. (shrink)

Self-criticism is a trait associated with increased psychopathology, but self-criticism is also a personality state reflecting an action that people do in moments of time. In the current study, we explored factors associated with heightened self-criticism in daily life. Participants (N = 197) received five random prompts per day for one week on their mobile phones, where they reported their current affect (negative and positive affect), willpower self-efficacy, distress intolerance, degree of support and criticism from others, current context (location, activity, (...) hunger, tiredness) and momentary self-criticism. We first demonstrated that self-criticism varies over time and across contexts, and is associated with heightened trait self-criticism. Then, using multilevel modelling, we explored the contextual factors associated with greater self-criticism. We found that self-criticism was higher when people were at home, and more tired. We also found higher self-criticism to be associated with greater negative and lower positive affect, greater distress intolerance, lower willpower and greater perceived criticism from others. In addition, self-criticism predicted subsequent distress intolerance, willpower and positive affect in lagged analyses. This study provides evidence that both environmental and psychological factors are associated with the dynamics of self-critical thoughts. (shrink)

A simplified definition of point local clocks and the relationship between an inertial reference frame and a class of such clocks, at rest with respect to each other, are used for an algebraic determination of the geometry of Minkowski's space-time on the set of point events. The group of all automorphisms that preserve the time ordering induced by the set of all equivalent local clocks is shown to be generated by the inhomogeneous orthochronous Lorentz group and dilatations, consistently with (...) a well-known result of E. C. Zeeman. The existence of a universal limit velocity and of an invariant clock cone through any event is among the implications of our proof, thus effectively exploiting a suggestion due to F. Severi. (shrink)

A solution of the sourceless Einstein's equation with an infinite value for the cosmological constant Λ is discussed by using Inönü–Wigner contractions of the de Sitter groups and spaces. When Λ→∞, spacetime becomes a four-dimensional cone, dual to Minkowski space by a spacetime inversion. This inversion relates the four-cone vertex to the infinity of Minkowski space, and the four-cone infinity to the Minkowski light-cone. The non-relativistic limit c→∞ is further considered, the kinematical group in this case being (...) a modified Galilei group in which the space and time translations are replaced by the non-relativistic limits of the corresponding proper conformal transformations. This group presents the same abstract Lie algebra as the Galilei group and can be named the conformal Galilei group. The results may be of interest to the early Universe Cosmology. (shrink)

In recent articles, Zangari (1994) and Karakostas (1997) observe that while an &unknown;-extended version of the proper orthochronous Lorentz group O + (1,3) exists for values of &unknown; not equal to zero, no similar &unknown;-extended version of its double covering group SL(2, C) exists (where &unknown;=1-2&unknown; R , with &unknown; R the non-standard simultaneity parameter of Reichenbach). Thus, they maintain, since SL(2, C) is essential in describing the rotational behaviour of half-integer spin fields, and since there is empirical evidence for (...) such behaviour, &unknown;-coordinate transformations for any value of &unknown;<>0 are ruled out empirically. In this article, I make two observations:(a)There is an isomorphism between even-indexed 2-spinor fields and Minkowski world-tensors which can be exploited to obtain generally covariant expressions of such spinor fields.(b)There is a 2-1 isomorphism between odd-indexed 2-spinor fields and Minkowski world-tensors which can be exploited to obtain generally covariant expressions for such spinor fields up to a sign. Evidence that the components of such fields do take unique values is not decisive in favour of the realist in the debate over the conventionality of simultaneity in so far as such fields do not play a role in clock synchrony experiments in general, and determinations of the one-way speed of light in particular.I claim that these observations are made clear when one considers the coordinate-independent 2-spinor formalism. They are less evident if one restricts oneself to earlier coordinate-dependent formalisms. I end by distinguishing these conclusions from those drawn by the critique of Zangari given by Gunn and Vetharaniam (1995). (shrink)

The Cartan equations defining simple spinors (renamed “pure” by C. Chevalley) are interpreted as equations of motion in compact momentum spaces, in a constructive approach in which at each step the dimensions of spinor space are doubled while those of momentum space increased by two. The construction is possible only in the frame of the geometry of simple or pure spinors, which imposes contraint equations on spinors with more than four components, and then momentum spaces result compact, isomorphic to invariant-mass-spheres (...) imbedded in each other, since the signatures result steadily Lorentzian; starting from dimension four (Minkowski) up to dimension ten with Clifford algebra ℂℓ(1, 9), where the construction naturally ends. The equations of motion met in the construction are most of those traditionally postulated ad hoc: from Weyl equations for neutrinos (and Maxwell's) to Majorana ones, to those for the electroweak model and for the nucleons interacting with the pseudoscalar pion, up to those for the 3 baryon-lepton families, steadily progressing from the description of lower energy phenomena to that of higher ones. The 3 division algebras: complex numbers, quaternions and octonions appear to be strictly correlated with Clifford algebras and then with this spinor-geometrical approach, from which they appear to gradually emerge in the construction, where they play a basic role for the physical interpretation: at the third step complex numbers generate U(1), possible origin of the electric charge and of the existence of charged—neutral fermion pairs, explaining also easily the opposite charges of proton-electron. Another U(1) appears to generate the strong charge at the fourth step. Quaternions generate the signature of space-time at the first step, the SU(2) internal symmetry of isospin and, in the gauge term, the SU(2) L one, of the electroweak model at the third step; they are also at the origin of 3 families; in number equal to that of quaternion imaginary units. At the fifth and last step octonions generate the SU(3) internal symmetry of flavour, with SU(2) isospin subgroup and, in the gauge term, the one of color, correlated with SU(2) L of the electroweak model. These 3 division algebras seem then to be at the origin of charges, families and of the groups of the Standard model. In this approach there seems to be no need of higher dimensional (>4) space-time, here generated by the four Poincaré translations, and dimensional reduction from ℂℓ(1,9) to ℂℓ(1,3) is equivalent to decoupling of the equations of motion. This spinor-geometrical approach is compatible with that based on strings, since these may be expressed bilinearly (as integrals) in terms of Majorana–Weyl simple or pure spinors which are admitted by ℂℓ(1, 9) = R(32). (shrink)

We propose to model spacetime by a differential space rather than by a differential manifold. A differential space is the pair (M, C), where M is any set, and C a family of real functions on M, satisfying certain axioms; C is called a differential structure of a corresponding differential space. This concept suitably generalizes the manifold concept. We show that C can be chosen in such a way that it contains all information about the causal structure of spacetime. This (...) information can be read out of C with the help of only one postulate, namely that physical signals travel along piecewise smooth curves in (M, C). We effectively construct the Minkowski spacetime, with its cone structure, in this way. Some comments are made. (shrink)

This entry examines a set of ancient Chinese texts – with their associated literary and ideological tendencies – that had come to be seen as distinctive by the early Han period. This set constitutes one of the standard referents of “Daoism,” a word whose difficulties command attention in their own right. The ancient writers we could label “Daoists” were united by no single text, founder, agenda, or concept; grouped together, they show tendencies towards dissidence, paradox, and humor that distinguish them (...) from moralistic and technocratic rivals. These writers engaged a variety of themes and practices familiar from the early Chinese religious environment; alongside the eccentricities of Daoist writers themselves, the distinctiveness of this environment makes it challenging to put them in philosophical dialogue with other religious traditions. Buddhist uses of the Daoist heritage illustrate its potential relevance to a range of other religious perspectives. (shrink)

Scientific theories do much more than answer empirical questions. This can be understood along empiricist lines only if those other aspects are instrumental for the pursuit of empirical strength and adequacy, or serving other aims subordinate to these. This chapter accordingly addresses four main questions: Does the rejection of realism lead to a self‐defeating scepticism? Are scientific methodology and experimental design intelligible on any but a realist interpretation of science? Is the ideal of the unity of science, or even the (...) practice of using distinct theories in conjunction, intelligent on an empiricist view? What sense can an empiricist position accord to those theoretical virtues––such as simplicity, coherence, explanatory power––that are not reducible to empirical strength or adequacy? The answers to these questions rely strongly on the pragmatics of scientific inquiry, and advocate a ‘Clausewitz doctrine’ of experimentation as a continuation of theorizing by other means. (shrink)

This chapter parodies Aquinas’ Five Ways to prove the existence of God by displaying similar arguments reminiscent of those often given in support of scientific realism. This is followed by a parody of scientific realists’ attempts to defend themselves against objections to such arguments.

The opposition between empiricism and realism with respect to science is old: it appeared clearly in the seventeenth century sense of superiority of the ‘mechanical philosophy’ to Scholastic metaphysics, and continued for the next three centuries’ debates over the philosophical foundations of physics. Empiricist views developed by the logical positivists of Vienna and Berlin were defeated by the emergence of scientific realism in the mid‐twentieth century. This defeat was largely due to the inadequacy of the positivist theories of meaning and (...) language. To present a viable empiricist account of science, we need conceptions of theory structure, truth, and empirical adequacy that are essentially independent of a theory's linguistic formulation. Correlative to this discussion of the relationship between theory and world is the question what it is to accept a scientific theory––how much belief is involved? And what is involved other than belief? The position to be developed here will view scientific activity as one of construction rather than discovery: construction of models that must be adequate to the observable phenomena, and not discovery of the truth about postulated unobservable parts of nature. Acceptance of a scientific theory so viewed will have an irreducible pragmatic dimension in addition to involving only a modest amount of belief. (shrink)

The Aristotelian tradition in science, dominant before the advent of modern science, saw real modalities in nature: necessity, possibility, contingency, potentiality, and essence. Throughout the modern period and the early twentieth century, empiricists struggled to maintain that there was nothing to be found between matters of actual fact on the one hand and relations between ideas or words on the other. Probability has the logical form of a modality, but until the twentieth century, it could be construed as a measure (...) of ignorance, or of actual proportions and frequencies, not a basic parameter in nature itself. That changed with the advent of quantum mechanics and the admission of indeterminism as a theoretical possibility. The legitimacy of irreducible probabilities was admitted in the modelling of natural processes. The challenge to the empiricist now is to interpret probability as it appears there, and this includes the larger challenge of displaying an empiricistically acceptable role for modalities in general in the scientific image. This chapter provides a systematic critique of frequentist and propensity interpretations of physical probability, but also characterizes the models of probability theory as constructible from families of sequences constrained by limiting frequencies. This formal agreement with a certain kind of ’ideal frequency’ account is embedded in a philosophical view of modalities in general that turns on an account of the language of science on the level of pragmatics. (shrink)

What is the empirical content of a theory? If a theory is identified with one of its linguistic formulations, the only available answers allow for no non‐trivial distinction between empirical and non‐empirical content. The restriction of such a formulated theory to a narrow ‘observational’ vocabulary is not a description of the observable part of the world but a hobbled and hamstrung description of its entire domain, still with non‐empirical implications. Viewing a theory as identified through the family of its models––the (...) structures it makes available for modelling the phenomena––yields a new approach. The distinctions so made are illustrated with Newton's physics, absolute versus relative motion, nineteenth‐ century ether theory of electromagnetism, and quantum mechanics. A hermeneutic circle in the interpretation is noted, and the theory‐independence of the observable/unobservable distinction maintained. (shrink)

What is compassion? I suggest that it is, as Adam Smith and David Hume once argued, a moral sentiment that is subject to a great many constraints and variations but is nonetheless “natural.” I also consider Nietzsche's rather vehement attack on Mitleid and current social psychological literature on empathy.

There seems to be no end to moralizing about the vices, but there is too little appreciation of them as mere human foibles and an essential part of the “human circus.” There are also serious questions about whether some of the so-called deadly sins are sinful at all.