Cheating is a serious issue among business students worldwide. However, research investigating the social factors that may help prevent cheating in Chinese higher education is rare. The present study examined two key social relationship factors of perceived teacher-student relationships and peer relationships by the students. It attempted to build a model which addressed the effects of two variables on Chinese business students’ cheating behaviour: the teacher’s approachability and the relationship goal of the students. Two important social influence factors were also (...) tested as mediators: neutralizing attitudes and perceived cheating norms of the students. A student survey was conducted with 1329 questionnaires collected. The results showed the negative effects of both social relationship variables on cheating, and that their effects were fully mediated by neutralizing attitudes. Moreover, perceived cheating norms fully mediated the effect of the teacher’s approachability, but not so for the relationship goal of the students. This study provided novel insights and recommendations for promoting academic integrity in Chinese business schools and universities. (shrink)

Cheating is a serious issue among business students worldwide. However, research investigating the social factors that may help prevent cheating in Chinese higher education is rare. The present study examined two key social relationship factors of perceived teacher-student relationships and peer relationships by the students. It attempted to build a model which addressed the effects of two variables on Chinese business students’ cheating behaviour: the teacher’s approachability and the relationship goal of the students. Two important social influence factors were also (...) tested as mediators: neutralizing attitudes and perceived cheating norms of the students. A student survey was conducted with 1329 questionnaires collected. The results showed the negative effects of both social relationship variables on cheating, and that their effects were fully mediated by neutralizing attitudes. Moreover, perceived cheating norms fully mediated the effect of the teacher’s approachability, but not so for the relationship goal of the students. This study provided novel insights and recommendations for promoting academic integrity in Chinese business schools and universities. (shrink)

BackgroundAn increasing number of studies utilize intracranial electrophysiology in human subjects to advance basic neuroscience knowledge. However, the use of neurosurgical patients as human research subjects raises important ethical considerations, particularly regarding informed consent and undue influence, as well as subjects’ motivations for participation. Yet a thorough empirical examination of these issues in a participant population has been lacking. The present study therefore aimed to empirically investigate ethical concerns regarding informed consent and voluntariness in Parkinson’s disease patients undergoing deep brain (...) stimulator (DBS) placement who participated in an intraoperative neuroscience study.MethodsTwo semi-structured 30-minute interviews were conducted preoperatively and postoperatively via telephone. Interviews assessed participants’ motivations for participation in the parent intraoperative study, recall of information presented during the informed consent process, and participants’ postoperative reflections on the research study.ResultsTwenty-two participants (mean age = 60.9) completed preoperative interviews at a mean of 7.8 days following informed consent and a mean of 5.2 days prior to DBS surgery. Twenty participants completed postoperative interviews at a mean of 5 weeks following surgery. All participants cited altruism or advancing medical science as “very important” or “important” in their decision to participate in the study. Only 22.7% (n = 5) correctly recalled one of the two risks of the study. Correct recall of other aspects of the informed consent was poor (36.4% for study purpose; 50.0% for study protocol; 36.4% for study benefits). All correctly understood that the study would not confer a direct therapeutic benefit to them.ConclusionEven though research coordinators were properly trained and the informed consent was administered according to protocol, participants demonstrated poor retention of study information. While intraoperative studies that aim to advance neuroscience knowledge represent a unique opportunity to gain fundamental scientific knowledge, improved standards for the informed consent process can help facilitate their ethical implementation. (shrink)

Let us assume that the expression A is a segment of the expression B. Now, let us assume that we try to transform the expression B into the expression B', removing A from B or replacing A with another expression, say A'. When shall we say that A is irremovable or occurs in B essentially? We shall do it, if we can neither remove A from B nor replace A with A', not influencing upon important properties of B. On the (...) other hand, when shall we say that the occurrence A in B is essential? We shall do it, if we can transform B into B' changing no properties of B. Let us say it more precisely. Let us assume - as concerns expressions x, y, x' and y' - that: (a) x occurs in y; (b) the only structural difference between y and y' is that x does not occur in y', or x' occurs in y instead of x. Then: x occurs in y inessentially-with-respect-to-w of y, iff y' is the same as y with respect to p. Correspondingly: x occurs in y essentially-with-respect-to-w of y, iff y' is different as y with respect to p. The occurrence x in y may be essential or inessential with respect to syntactic, semantic or pragmatic properties of y. In my paper, I discuss a variety of detailed concepts of the (in)essential occurrence of expressions in another expressions with respect to semantic properties of these expressions, i.e. with respect to semantic category, logical value, denotation and connotation. I also discuss some philosophical and methodological implications of presented solutions of the problem. (shrink)

R.P. Rivas, Tolerancia: teoría y práctica en la Edad Media, Actas del Coloquio de Mendoza, Federation Internationale des Instituts d’Etudes Medievales, Porto 2012.

In this third volume of a monumental four book survey of Phenome­ nology world-wide fifty years after the death of its chief founder, Edmund Husserl, we have a collection of studies which, in the first place, consider Husserl's legacy in the postmodern world. The extent of our indebtedness to the Master is shown in explora­ tions of the archeology of knowledge, hermeneutics, and critical studies of language by A. Ales Bello, P. Pefialver, P. Million, V. Martinez Guzman, H. Rodriguez Pifiero, (...) Y. Vlaisavlevich, and others. There follow calls for renewing the critique of reason by C. Schrag, F. Bosio, and J. Lerin Riera and discussion by D. Laskey, K. G6rniak-Kocikowska, M. R. Barral, Y. Park, and N. Delle Site on A-T. Tymieniecka's phe­ nomenology of life, which proposes a total reorientation of phenome­ nology by introducing a conception of the human condition in which the human creative act is the Archimedean point for philosophy. (shrink)

Le libertinage est un phénomène hétérogène qui se caractérise par plusieurs attitudes de pensée et de mœurs. La contestation des valeurs chrétiennes est un élément commun liant toutes les formes du libertinage. Le libertinage érudit qui se caractérise par le naturalisme et le scepticisme au regard de toutes vérités universelles est une des variétés caractéristiques du libertinage au XVIe et au XVIIe siècles. Il associait les hommes de lettres, les hommes de sciences, les fonctionnaires publics cependant il ne constituait pas (...) un système homogène. Aussi des personnages associés au libertinage érudit ne créèrent aucun groupe formel et aucune association. Le libertinage de mœurs se développait simultanément au courant du libertinage érudit. L'œuvre de P. Gassendi avait une influence sur le développement de ce courant. Le libertinage de mœurs est très connu et répandu grâce aux histoires amoureuses, aux flirts et aux scandales amoureux. Cependant il serait faux de définir et de déterminer le phénomène de tout le libertinage uniquement en catégories de la liberté de mœurs et du relâchement des mæurs. Sans aucun doute le libertinage de mœurs contribua au changement du statut social, de l'identité sexuelle et culturelle des femmes. Celles qui se trouvaient dans les chaînes du mariage, ne possédant pas de liberté de l'activité publique ni politique commencèrent à apercevoir la possibilité de s'activer et de se libérer de l'espace privé. La matérialité et la sensualité ne se développèrent pas uniquement sous l'influence de la relativisation des mœurs mais aussi, comme le prouva M. Foucault, grâce aux «livres de bonne confession». Le catalogue des fautes et des péchés concernant la sphère sexuelle qui y furent inscrits était de plus en plus détaillé. Cela résultait de nouvelles doutes des croyants en question de la nature du péché. Ainsi ces livres devinrent un type de guide de la sphère sensuelle. Les œuvres du marquis de œade sont les plus controversées en matière du libertinage de mœurs. L'évaluation de ses œuvres comprend en soi la condamnation des œuvres ainsi que du style de vie du marquis de œade, les accusations, l'immoralisme et le blasphème, la cruauté et la violence. Les champs de recherche et d'interprétation essaient d'analyser ses œuvres aussi en référence au problème des limites de la liberté de l’homme, sa solitude; elles sont aussi interprétées en tant que «philosophie du crime». Parmi plusieurs théories qui traitent le problématique du libertinage, il est apparu celle qui cherche des relations entre son développement et la croissance de la résistance par rapport à l'absolutisme depuis le XVIIe siècle. Cela devrait être lié à l'inquiétude du pouvoir public due à la liberté excessive de mœurs. Du point de vue du pouvoir public, le danger était constitué par le caractère privé et l'intimité - les situations où dans un groupe des personnes fidèles, sans présence des tierces personnes, s'effectuerait le changement de pensée, d'idées probablement dangereuses pour l'ordre public; par conséquent des contrôles officiels plus fréquents eurent lieu. Le libertinage de l'époque de la Renaissance modifia sa forme et son caractère. Au XVIIIe siècle toute la mosaїque et la diversification des formes du libertinage de mœurs sous l'influence de la monotonie ennuyeuse croissante, de l'atmosphère de l'inquiétude et du pressentiment de l'aube de l'époque, souvent s'exprima en lassitude décadente, fatigue, poursuite des divertissements. Le désespoir et les doutes emparèrent des intellectuels et des philosophes de la Renaissance; la libérer l’homme de toutes les contraintes égalment celles qui sont proclamées par le christianisme. Dans ce contexte le phénomène du libertinage cessa de remplir la fonction de la proposition du style de vie innovant même si souvent controversé qui en matière de mœurs fut même scandaleux, ainsi que de la manière à participer à l'ordre culturelle et de civilisation. Ce fut l'un des symptômes de la crise des valeurs de la Renaissance et la prémisse de l'atmosphère pessimiste. (shrink)

ABSTRACT In this survey we have investigated the experiences and attitudes of Danish physicians regarding end‐of life decisions. Most respondents have made decisions that involve hastening the death of a patient, and almost all find it acceptable to do so. Such decisions are made more often, and considered ethically more acceptable, with the informed consent of the patient than without. But both non‐resuscitation decisions, and decisions to provide pain relief in doses that will shorten the patient's life, have been made (...) and found acceptable by at least 50% of the respondents, even when there is no informed consent. Furthermore, 12% have doubled morphine dosages with fixed intervals, thus providing doses substantially higher than that necessary to control pain, without the informed consent of the patient. Two per cent have helped in assisted suicide, and 5% have administered a lethal injection at the patient's request. Respectively 37% and 34% find these last two practices ethically acceptable. Amongst those that do not find them acceptable, the most important reasons to be opposed are, the doctrine of double effect, the doctrine of doing and allowing, and the view that human life is sacred. Amongst supporters, the most important reasons mentioned are, that the patient's right to self‐determination should be respected, the view that a patient should not be forced to suffer, and the view that the patient has a right to be helped to a dignified death. (shrink)

In this survey we have investigated the experiences and attitudes of Danish physicians regarding end-of-life decisions. Most respondents have made decisions that involve hastening the death of a patient, and almost all find it acceptable to do so. Such decisions are made more often, and considered ethically more acceptable, with the informed consent of the patient than without. But both non-resuscitation decisions, and decisions to provide pain relief in doses that will shorten the patient's life, have been made and found (...) acceptable by at least 50% of the respondents, even when there is no informed consent. Furthermore, 12% have doubled morphine dosages with fixed intervals, thus providing doses substantially higher than that necessary to control pain, without the informed consent of the patient. Two per cent have helped in assisted suicide, and 5% have administered a lethal injection at the patient's request. Respectively 37% and 34% find these last two practices ethically acceptable. Amongst those that do not find them acceptable, the most important reasons to be opposed are, the doctrine of double effect, the doctrine of doing and allowing, and the view that human life is sacred. Amongst supporters, the most important reasons mentioned are, that the patient's right to self-determination should be respected, the view that a patient should not be forced to suffer, and the view that the patient has a right to be helped to a dignified death. (shrink)

Several complementary approaches have been fruitful in the study of transport from the ER to the Golgi complex in yeast. Mutational analysis has led to the identification of genes required for this process, many of which are now being studied at the molecular and biochemical level. In the case of SEC18, DNA sequence analysis has demonstrated homology to a factor needed for transport in mammalian in vitro systems. In addition, the events that take place at this stage of the secretory (...) pathway have been reconstituted in vitro. (shrink)

Abstract:The introduction of the kilometer in nineteenth-century Europe, within a context of broader processes of standardization and capitalism and the proliferation of maps and railways, has been associated with the disembodiment, deindividuation and decontextualization of travel. This article offers a critique of this notion by examining the various meanings different units of distance had for travelers; to what extent these units were related to the body and the physical activity of travel; and whether these relations changed between the 1770s and (...) 1910s. Focusing on texts of instruction and texts about travelers' own journeys, written in the Dutch, German, English and French languages, the article argues that a number of more embodied ways of describing distances survived alongside more standardized measures. (shrink)

We claim that, as it stands, the Deutsch–Wallace–Everett approach to quantum theory is conceptually incoherent. This charge is based upon the approach’s reliance upon decoherence arguments that conflict with its own fundamental precepts regarding probabilistic reasoning in two respects. This conceptual conflict obtains even if the decoherence arguments deployed are aimed merely towards the establishment of certain ‘emergent’ or ‘robust’ structures within the wave function: To be relevant to physical science notions such as robustness must be empirically grounded, and, on (...) our analysis, this grounding can only plausibly be done in precisely the probabilistic terms that lead to conceptual conflict. Thus, the incoherence problems presented necessitate either the provision of a new, non-probabilistic empirical grounding for the notions of robustness and emergence in the context of decoherence, or the abandonment of the Deutsch–Wallace–Everett programme for quantum theory. (shrink)

Research on the division of cognitive labor has found that adults and children as young as age 5 are able to find appropriate experts for different causal systems. However, little work has explored how children and adults decide when to seek out expert knowledge in the first place. We propose that children and adults rely on “mechanism metadata,” information about mechanism information. We argue that mechanism metadata is relatively consistent across individuals exposed to similar amounts of mechanism information, and it (...) is applicable to a wide range of causal systems. In three experiments, we show that adults and children as young as 5 years of age have a consistent sense of the causal complexity of different causal systems, and that this sense of complexity is related to decisions about when to seek expert knowledge, but over development there is a shift in focus from procedural information to internal mechanism information. (shrink)

We introduce ‘model migration’ as a species of cross-disciplinary knowledge transfer whereby the representational function of a model is radically changed to allow application to a new disciplinary context. Controversies and confusions that often derive from this phenomenon will be illustrated in the context of econophysics and phylogeographic linguistics. Migration can be usefully contrasted with concept of ‘imperialism’, that has been influentially discussed in the context of geographical economics. In particular, imperialism, unlike migration, relies upon extension of the original model (...) via an expansion of the domain of phenomena it is taken to adequately described. The success of imperialism thus requires expansion of the justificatory sanctioning of the original idealising assumptions to a new disciplinary context. Contrastingly, successful migration involves the radical representational re-interpretation of the original model, rather than its extension. Migration thus requires ‘re-sanctioning’ of new ‘counterpart idealisations’ to allow application to an entirely different class of phenomena. Whereas legitimate scientific imperialism should be based on the pursuit of some form of ontological unification, no such requirement is need to legitimate the practice of model migration. The distinction between migration and imperialism will thus be shown to have significant normative as well as descriptive value. (shrink)

The subjective Everettian approach to quantum mechanics presented by Deutsch and Wallace fails to constitute an empirically viable theory of quantum phenomena. The decision theoretic implementation of the Born rule realized in this approach provides no basis for rejecting Everettian quantum mechanics in the face of empirical data that contradicts the Born rule. The approach of Greaves and Myrvold, which provides a subjective implementation of the Born rule as well but derives it from empirical data rather than decision theoretic arguments, (...) avoids the problem faced by Deutsch and Wallace and is empirically viable. However, there is good reason to cast doubts on its scientific value. (shrink)

Advance directives (ADs) have for some time been championed by ethicists and patient associations alike as a tool that people newly diagnosed with dementia, or prior to onset, may use to ensure that their future care and treatment are organized in accordance with their interests. The idea is that autonomous people, not yet neurologically affected by dementia, can design directives for their future care that caregivers are morally obligated to respect because they have been designed by autonomous individuals. In this (...) paper, we first criticize the idea that ADs can retain moral authority in severe dementia by arguing that it is paradoxical. Second, we consider two arguments that initially seem to refute this critique of ADs, but we eventually dismiss them. The first argument states that ADs retain moral authority in severe dementia because autonomously formed interests, for example, ADs, can only be appropriately discarded by autonomous persons. This we term the historical autonomy argument. We dismiss it by demonstrating how we, in analog cases, are not obligated to continue to respect autonomously formed interests even though they have been discarded under nonappropriate conditions. The second argument is that ADs can be justified by what we term external interests. While we agree that people with severe dementia plausible can be said to have external interests, we show that ADs cannot express such interests and hence cannot be justified by them. We conclude that none of the discussed arguments support the use of ADs and because of this, the idea of ADs should be reassigned. (shrink)

In the article the possibility of using a smartphone with an integrated set of necessary technical means for implementing the technology of video recording of vehicle speed is investigated and established. The main algorithmic and software components of a smartphone are proposed, which allow to identify and to accompany a vehicle, as well as to determine its speed. Installation and initial setup of the device is simple. It is only necessary to measure and enter in the device height of its (...) arrangement. In the article the possibility of using a smartphone with an integrated set of necessary technical means for implementing the technology of video recording of vehicle speed is investigated and established. The smartphone has a low cost and power consumption, the ability to operate in the required temperature range, as well as a set of physically built-in necessary technical means: several video cameras, accelerometers, gyroscope, magnetometer, GPS sensor, GSM and Wi-Fi wireless communication. Due to its low power consumption, it can also run on solar panels during the day when no other power source is available. The cost of a smartphone with very good characteristics does not exceed 10,000 UAH. The paper proposes the main components of the algorithmic support of the device. The use of the Lucas-Kanade method for the implementation of tracking and the calculation in the interpixel space of the coordinates of the points of the vehicle's trajectory will improve the accuracy of measurements of the traveled distance and the vehicle's speed on short sections of the trajectory. The proposed algorithm for calculating the vehicle speed requires entering only one parameter - the height of the device. Therefore, installation and initial setup of the device is simple. It is enough to measure and enter this parameter into the device. Large-scale introduction of a device for measuring vehicle speed, built on the basis of a smartphone, is possible due to relatively small investments in the development of its mechanical part, algorithmic and software. (shrink)

In this article, I examine Luhmann’s, Bunge’s and others’ views on emergence, and argue that Luhmann’s epistemological construal of emergence in terms of Totalausschluss (total exclusion) is both ontologically flawed and detrimental to an appropriate understanding of the distinctive features of social emergence. By contrast, Bunge’s rational emergentism, his CESM model, and Wimsatt’s characterization of emergence as nonaggregativity provide a useful framework to investigate emergence. While researchers in the field of social theory and sociology tend to regard Luhmann as the (...) sole representative of systems theory, the latter has been characterized by its diversity, and the writings of such systems theorists as Mario Bunge deserve more (critical) attention from social researchers than they receive at present. Finally, this article suggests that the perennial debate over methodological individualism and holism in social science may make real progress if such ambiguous terms as reduction and reductionism are elucidated before they are employed. (shrink)

On one popular view, the general covariance of gravity implies that change is relational in a strong sense, such that all it is for a physical degree of freedom to change is for it to vary with regard to a second physical degree of freedom. At a quantum level, this view of change as relative variation leads to a fundamentally timeless formalism for quantum gravity. Here, we will show how one may avoid this acute ‘problem of time’. Under our view, (...) duration is still regarded as relative, but temporal succession is taken to be absolute. Following our approach, which is presented in more formal terms in, it is possible to conceive of a genuinely dynamical theory of quantum gravity within which time, in a substantive sense, remains. 1 Introduction1.1 The problem of time1.2 Our solution2 Understanding Symmetry2.1 Mechanics and representation2.2 Freedom by degrees2.3 Voluntary redundancy3 Understanding Time3.1 Change and order3.2 Quantization and succession4 Time and Gravitation4.1 The two faces of classical gravity4.2 Retaining succession in quantum gravity5 Discussion5.1 Related arguments5.2 Concluding remarks. (shrink)

This article attempts to assess Mario Bunge’s important but widely neglected criticisms of dialectics. It begins by providing a contextualized interpretation of Friedrich Engels’s metaphysics of the dialectics of nature before embarking on a detailed discussion of Leon Trotsky’s and contemporary “dialectical” scientists’ views on materialist dialectics. It argues that while some of Bunge’s criticisms are eminently sensible, the principles underlying the works of dialectical scientists are compatible with Bunge’s emergentist and systemic approach and can shed light on such issues (...) as the levels of organization, the diachronic and synchronic aspects of emergence, and the individualism-holism-systemism trilemma. This article also submits that dialectics is best interpreted as a guideline for a philosophy of change instead of a magical wand that liberates the investigator from study of facts. Understood as something that serves heuristic purposes, dialectics can be sensibly utilized by scientists to shore up or refine their methodological principles and thereby to facilitate empirical research. (shrink)

The `problem of time' is a cluster of interpretational and formal issues in the foundations of general relativity relating to both the representation of time in the classical canonical formalism, and to the quantization of the theory. The purpose of this short chapter is to provide an accessible introduction to the problem.

Starting from a generalized Hamilton-Jacobi formalism, we develop a new framework for constructing observables and their evolution in theories invariant under global time reparametrizations. Our proposal relaxes the usual Dirac prescription for the observables of a totally constrained system and allows one to recover the influential partial and complete observables approach in a particular limit. Difficulties such as the non-unitary evolution of the complete observables in terms of certain partial observables are explained as a breakdown of this limit. Identification of (...) our observables relies upon a physical distinction between gauge symmetries that exist at the level of histories and states, and those that exist at the level of histories and not states. This distinction resolves a tension in the literature concerning the physical interpretation of the partial observables and allows for a richer class of observables in the quantum theory. There is the potential for the application of our proposal to the quantization of gravity when understood in terms of the Shape Dynamics formalism. (shrink)

Symplectic reduction is a formal process through which degeneracy within the mathematical representations of physical systems displaying gauge symmetry can be controlled via the construction of a reduced phase space. Typically such reduced spaces provide us with a formalism for representing both instantaneous states and evolution uniquely and for this reason can be justifiably afforded the status of fun- damental dynamical arena - the otiose structure having been eliminated from the original phase space. Essential to the application of symplectic reduction (...) is the precept that the first class constraints are the relevant gauge generators. This prescription becomes highly problematic for reparameterization invariant theories within which the Hamiltonian itself is a constraint; not least because it would seem to render prima facie distinct stages of a history physically identical and observable functions changeless. Here we will consider this problem of time within non-relativistic me- chanical theory with a view to both more fully understanding the temporal struc- ture of these timeless theories and better appreciating the corresponding issues in relativistic mechanics. For the case of nonrelativistic reparameterization invariant theory application of symplectic reduction will be demonstrated to be both unnec- essary; since the degeneracy involved is benign; and inappropriate; since it leads to a trivial theory. With this anti-reductive position established we will then examine two rival methodologies for consistently representing change and observable func- tions within the original phase space before evaluating the relevant philosophical implications. We will conclude with a preview of the case against symplectic re- duction being applied to canonical general relativity. (shrink)

In 1981 Unruh proposed that fluid mechanical experiments could be used to probe key aspects of the quantum phenomenology of black holes. In particular, he claimed that an analogue to Hawking radiation could be created within a fluid mechanical `dumb hole', with the event horizon replaced by a sonic horizon. Since then an entire sub-field of `analogue gravity' has been created. In 2016 Steinhauer reported the experimental observation of quantum Hawking radiation and its entanglement in a Bose-Einstein condensate analogue black (...) hole. What can we learn from such analogue experiments? In particular, in what sense can they provide evidence of novel phenomena such as black hole Hawking radiation? (shrink)

The analysis of the temporal structure of canonical general relativity and the connected interpretational questions with regard to the role of time within the theory both rest upon the need to respect the fundamentally dual role of the Hamiltonian constraints found within the formalism. Any consistent philosophical approach towards the theory must pay dues to the role of these constraints in both generating dynamics, in the context of phase space, and generating unphysical symmetry transformations, in the context of a hypersurface (...) embedded within a solution. A first denial of time in the terms of a position of reductive temporal relationalism can be shown to be troubled by failure on the first count, and a second denial in the terms of Machian temporal relationalism can be found to be hampered by failure on the second. A third denial of time, consistent with both of the Hamiltonian constraints roles, is constituted by the implementation of a scheme for constructing observables in terms of correlations and leads to a radical Parmenidean timelessness. The motivation for and implications of each of these three denials are investigated. (shrink)

A physically consistent semi-classical treatment of black holes requires universality arguments to deal with the ‘trans-Planckian’ problem where quantum spacetime effects appear to be amplified such that they undermine the entire semi-classical modelling framework. We evaluate three families of such arguments in comparison with Wilsonian renormalization group universality arguments found in the context of condensed matter physics. Our analysis is framed by the crucial distinction between robustness and universality. Particular emphasis is placed on the quality whereby the various arguments are (...) underpinned by ‘integrated’ notions of robustness and universality. Whereas the principal strength of Wilsonian universality arguments can be understood in terms of the presence of such integration, the principal weakness of all three universality arguments for Hawking radiation is its absence. (shrink)

We present a Bayesian analysis of the epistemology of analogue experiments with particular reference to Hawking radiation. Provided such experiments can be externally validated via universality arguments, we prove that they are confirmatory in Bayesian terms. We then provide a formal model for the scaling behaviour of the confirmation measure for multiple distinct realisations of the analogue system and isolate a generic saturation feature. Finally, we demonstrate that different potential analogue realisations could provide different levels of confirmation. Our results thus (...) provide a basis both to formalise the epistemic value of analogue experiments that have been conducted and to advise scientists as to the respective epistemic value of future analogue experiments. (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)

Hamiltonian constraints feature in the canonical formulation of general relativity. Unlike typical constraints they cannot be associated with a reduction procedure leading to a non-trivial reduced phase space and this means the physical interpretation of their quantum analogues is ambiguous. In particular, can we assume that “quantisation commutes with reduction” and treat the promotion of these constraints to operators annihilating the wave function, according to a Dirac type procedure, as leading to a Hilbert space equivalent to that reached by quantisation (...) of the problematic reduced space? If not, how should we interpret Hamiltonian constraints quantum mechanically? And on what basis do we assert that quantisation and reduction commute anyway? These questions will be refined and explored in the context of modern approaches to the quantisation of canonical general relativity. (shrink)

A novel approach to quantization is shown to allow for superpositions of the cosmological constant in isotropic and homogeneous mini-superspace models. Generic solutions featuring such superpositions display: i) a unitary evolution equation; ii) singularity resolution; iii) a cosmic bounce. Explicit cosmological solutions are constructed. These exhibit characteristic bounce features including a ‘super-inflation’ regime with universal phenomenology that can naturally be made to be insensitive to Planck-scale physics.

Review of Bryan W. Roberts: Reversing the Arrow of Time, Cambridge University Press, 2022.

The canonical formalism of general relativity affords a particularly interesting characterisation of the infamous hole argument. It also provides a natural formalism in which to relate the hole argument to the problem of time in classical and quantum gravity. In this paper we examine the connection between these two much discussed problems in the foundations of spacetime theory along two interrelated lines. First, from a formal perspective, we consider the extent to which the two problems can and cannot be precisely (...) and distinctly characterised. Second, from a philosophical perspective, we consider the implications of various responses to the problems, with a particular focus upon the viability of a `deflationary' attitude to the relationalist/substantivalist debate regarding the ontology of spacetime. Conceptual and formal inadequacies within the representative language of canonical gravity will be shown to be at the heart of both the canonical hole argument and the problem of time. Interesting and fruitful work at the interface of physics and philosophy relates to the challenge of resolving such inadequacies. (shrink)

Advancements in novel neurotechnologies, such as brain computer interfaces and neuromodulatory devices such as deep brain stimulators, will have profound implications for society and human rights. While these technologies are improving the diagnosis and treatment of mental and neurological diseases, they can also alter individual agency and estrange those using neurotechnologies from their sense of self, challenging basic notions of what it means to be human. As an international coalition of interdisciplinary scholars and practitioners, we examine these challenges and make (...) recommendations to mitigate negative consequences that could arise from the unregulated development or application of novel neurotechnologies. We explore potential ethical challenges in four key areas: identity and agency, privacy, bias, and enhancement. To address them, we propose democratic and inclusive summits to establish globally-coordinated ethical and societal guidelines for neurotechnology development and application, new measures, including “Neurorights,” for data privacy, security, and consent to empower neurotechnology users’ control over their data, new methods of identifying and preventing bias, and the adoption of public guidelines for safe and equitable distribution of neurotechnological devices. (shrink)

Journal of Philosophy of Education, EarlyView.

Review of ‘Physical Theory: Method and Interpretation’ edited by Lawrence Sklar.