Two ideal standard clocks, effectively isolated from interaction with other physical systems, and in a region of the universe free of gravitational fields, are assumed to move in any arbitrary manner so that they coincide on at least two occasions. In general, the reading of one of them will become retarded relative to the other in the interval between successive coincidences. This relative retardation is predicted by the restricted theory of relativity, taken together with the assumption that the 'rate' of (...) a clock depends only on its velocity and not on its acceleration. The recognized procedure for calculating the retardation in terms of clock 'rates' is set out, and is illustrated by its application to a simple hypothetical experiment in which one clock remains at rest and the other travels away from and back to it with constant speed in a straight line. There is nothing paradoxical in the predicted retardation as such. The so-called 'clock paradox' arises because an alternative, and apparently valid, calculation procedure, also based on clock 'rates', leads to a contradictory result. The term 'paradox' is something of a euphemism since the two predictions are contradictories. It is shown that the paradox does not arise when direct use is made of the Lorentz transformation without introducing the additional, and non-essential, step in reasoning involved in utilizing the clock 'rates'. It is then shown that the paradox arises only through using these clock 'rates' without due regard to the exact significance of the quantities so described; once this is recognized the paradox is resolved completely within the framework of the restricted theory, which then provides a unique and unambiguous prediction of the relative retardation. Once the paradox is thus resolved, the general theory of relativity can add nothing significant to the analysis. It is shown that the application of the principle of equivalence is essentially trivial; in effect, Einstein and Tolman evaded the real logical issue raised by the contradictory predictions by denying the applicability of the restricted theory and then utilizing, by means of the principle of equivalence, results obtained from it. This tortuous procedure succeeded in evading the paradox rather than in resolving it; it would obviously be quite invalid were the restricted theory indeed inapplicable to the problem. (shrink)

Artificial Intelligence in the form of different machine learning models is applied to Big Data as a way to turn data into valuable knowledge. The rhetoric is that ensuing predictions work well—with a high degree of autonomy and automation. We argue that we need to analyze the process of applying machine learning in depth and highlight at what point human knowledge production takes place in seemingly autonomous work. This article reintroduces classification theory as an important framework for understanding such seemingly (...) invisible knowledge production in the machine learning development and design processes. We suggest a framework for studying such classification closely tied to different steps in the work process and exemplify the framework on two experiments with machine learning applied to Facebook data from one of our labs. By doing so we demonstrate ways in which classification and potential discrimination take place in even seemingly unsupervised and autonomous models. Moving away from concepts of non-supervision and autonomy enable us to understand the underlying classificatory dispositifs in the work process and that this form of analysis constitutes a first step towards governance of artificial intelligence. (shrink)

This is the first of a pair of papers. It focuses on the development of the most notable phlogistic theories during the period 1766–1791, including the main experiments that their proponents proposed them to interpret. There was a rapid proliferation of late phlogistic theories, particularly from 1784, and the accounts of composition and important implications of the main theories are set out and their issues analysed. Each of them either reached impasses due to internal problems, or included features that made (...) them unacceptable even to other phlogistians. The expositions and analyses of these theories are given in terms of details that were in the literature at the time or otherwise potentially understandable by the participants given contemporary practice. Some relevant methodological aspects of the history of science are discussed, and the secondary literature is briefly surveyed. The second paper deals with the contemporary development of the new chemistry, and with theory comparison and theory choice in the same period. (shrink)

With developments in the 19th and early 20th centuries, structuralist ideas concerning the subject matter of mathematics have become commonplace. Yet fundamental questions concerning structures and relations themselves as well as the scope of structuralist analyses remain to be answered. The distinction between axioms as defining conditions and axioms as assertions is highlighted as is the problem of the indefinite extendability of any putatively all-embracing realm of structures. This chapter systematically compares four main versions: set-theoretic structuralism, a version taking structures (...) as sui generis universals, structuralism based on category theory, and a quasi-nominalist modal-structuralism. While none of the approaches is problem-free, it appears that some synthesis of the category-theoretic approach with modal-structuralism can meet the challenges set out, given the notion of “logical possibility.”. (shrink)

Starting from a behavioural-economics critique of standard rational choice theory Sugden seeks to restate the case for classical liberalism. That case has three strands: a refutation of libertarian...

Name der Zeitschrift: Semiotica Jahrgang: 2017 Heft: 218 Seiten: 21-64.

Just how realistic about human nature and real possibilities must a theory of justice, or a moral theory, more generally, be? Lines have been drawn, with some holding that idealizing away from reality is indispensable and others maintaining that utopian thinking is not just useless but irrelevant. In Utopophobia David Estlund defends the value of utopian theory. At his most modest, Estlund claims that it is a legitimate approach, not ruled out of court by anti-idealists on entirely inadequate grounds—merely “by (...) assumption or definition” as he puts it. Yet he also argues against what we call real world theory, which takes account of human imperfection and feasible options. It invites complacency and undermines aspiration, he argues, and he accepts Rawls’ claim that it will of necessity be unsystematic, thanks to its realism. We accept that the utopian approach is neither useless nor irrelevant. Yet we press hard against the charges against real world theory, maintaining that, properly understood, it invites neither complacency nor aspiration and can perfectly well offer a systematic and principled account of normative concepts, including justice specifically. (shrink)

In responding to an essay by Marianne Hirsch and Leo Spitzer about photographs taken in the streets of Chernivitsi in the 1940s, and thus in the midst of the Holocaust, this paper seeks to link their concerns to a broader consideration of photography as a modern phenomenon. In the process, the paper provides a brief history of street photography, a genre virtually ignored in standard histories of the photographic medium. The author suggests that Hirsch and Spitzer’s paper bravely reminds us (...) that our fascination with photographs is based not on truth, but on a combination of desire and faith . Their account of street photography in Czernowitz thereby amounts to an interpretation of photographs as dynamic modes of apprehension rather than as static objects from the past that veridically represent it. It is precisely this aspect of photographs that makes them such unusually complicated, ambiguous, and incongruous historical objects. (shrink)

"The four essays in this volume constitute Derrida's most explicit and sustained reflection on the art work as pictorial artifact, a reflection partly by way of philosophical aesthetics, partly by way of a commentary on art works and art scholarship. The illustrations are excellent, and the translators, who clearly see their work as both a rendering and a transformation, add yet another dimension to this richly layered composition. Indispensable to collections emphasizing art criticism and aesthetics."—Alexander Gelley, _Library Journal_.

A volume of essays by leading photography writers and critics, published to benefit Amnesty International, cites such examples as the work of Susan Sontag to question whether photography of disturbing images stirs empathy or voyeurism in its viewers, outlining how to look at photographs to become contextually informed. Original.

One of the consequences of the public outcry over the 1929 St Valentine’s Day massacre was the establishment of a Scientific Crime Detection Laboratory at Northwestern University. The photogenic ‘Lie Detector Man’, Leonarde Keeler, was the laboratory’s poster boy, and his instrument the jewel in the crown of forensic science. The press often depicted Keeler gazing at a female suspect attached to his ‘sweat box’, a galvanometer electrode in her hand, a sphygmomanometer cuff on her arm and a rubber pneumograph (...) tube strapped across her breasts. Keeler’s fascination with the deceptive charms of the female body was one he shared with his fellow lie detector pioneers, all of whom met their wives – and in William Marston’s case, his mistress too – through their engagement with the instrument. Marston employed his own ‘Love Meter’, as the press dubbed it, to prove that ‘brunettes react far more violently to amatory stimuli than blondes’. In this article, I draw on the psychoanalytic concepts of fantasy and pleasure to argue that the female body played a pivotal role in establishing the lie detector’s reputation as an infallible and benign mechanical technology of truth. (shrink)

Rensink [Rensink, R. A. . Visual sensing without seeing. Psychological Science, 15, 27–32] has presented evidence suggesting visual changes may be sensed without an accompanying visual experience. Here, we report two experiments in which we monitored observers’ eye-movements whilst they searched for a difference between two simultaneously presented images and pressed separate response keys when a difference was seen or sensed. We first assessed whether sensing performance was random by collecting ratings of confidence in the validity of sensing and assessing (...) gaze location during sensing. Sensing was not random: fixation position and confidence ratings were different when a difference was present compared to catch trials. Furthermore, the uniformity of objects in the images and the type of difference appear to affect seeing and sensing differently, suggesting that these processes are dissociated. The possibility is discussed of a sensing mechanism that increases vigilance toward unconsciously registered differences, particularly changes to scene layout. (shrink)

The application of evolutionary ideas to socioeconomic systems has been an increasingly prominent theme in the work of Friedrich Hayek, and the motif has become dominant in his recent book. In an earlier issue of this journal, Viktor Vanberg raises two substantive criticisms of Friedrich Hayek' theory of cultural evolution that invoke some important questions concerning use of the evolutionary analogy in social science.

This chapter examines the nature and normative significance of taxation. In particular, it identifies and explores two central normative questions: (1) What tax arrangements should a state or society put into place? (2) How should a citizen or taxpayer relate to an existing system? In thinking through these and relate questions, the discussion also critically engages with the broadly Rawlsian view of taxation defended by Murphy and Nagel in The Myth of Ownership.

Hird, G.R., Recursive properties of relations on models, Annals of Pure and Applied Logic 63 241–269. We prove general existence theorems for recursive models on which various relations have specified recursive properties. These capture common features of results in the literature for particular algebraic structures. For a useful class of models with new relations R, S, where S is r.e., we characterize those for which there is a recursive model isomorphic to on which the relation corresponding to S remains r.e., (...) while that corresponding to R is not r.e.; immune; hyperimmune. The results are applied to vector spaces, Boolean algebras and abelian groups. In the case of vector spaces, this leads to a new kind supermaximal subspace of V∞. (shrink)

Considerable evidence has demonstrated that people are not only sensitive to the information contained in concrete imagistic gesture, but furthermore, that they combine this gestural information with the accompanying speech in order to understand the full semantic meaning that a speaker conveys in a message. There is, however, very little experimental evidence concerning how people deal with more abstract metaphoric gestures and whether they extract meaning from these gestures and combine this with the information in the accompanying speech. The two (...) studies reported here investigated this issue by comparing and contrasting the effects of metaphoric gesture-speech matches and mismatches on both semantic communication and social judgment. The studies found that individuals do combine the information contained in metaphoric gestures with that contained in speech and that the meaning of the utterance is demonstrably affected by the presence of a gesture-speech mismatch. The second study found that in messages in which there are gesture-speech mismatches, participants seemed to like the speaker less and were less likely to believe what they said. The implications of these studies for a range of domains, including advertising and politics, are discussed. (shrink)

Augustine’s interpretation of the parable of the rich man and Lazarus from Lk 16 shows how much the parables of Jesus are open to a variety of interpretations and applications depending upon which part of the parable is emphasised. In Augustine’s writings the second part of the parable only is commented upon (the exception being ep. 157) to illustrate points about the afterlife and the fate of the soul. However, in his homilies we find him engaging with both sections of (...) the parable (this life and the afterlife). We can note the dexterity with which Augustine handled diverse themes in the parable by selectively emphasising either the fate of the rich man in this life or the next or the fate of Lazarus in this life or the next. From these different perspectives Augustine could deal with questions of wealth and poverty either materially or spiritually. This research supports the notion that whatever Augustine had to say about almsgiving is to be understood within a soteriological context to urge his congregation to be rich in humility and poor in pride. (shrink)

How may we best understand the motivational structure that stands behind individuals' acts of voting? In “The Impartial Spectator Goes to Washington” we suggested that expressive concerns swamp narrowly consequential motivations, in contradistinction to normal market transactions in which the priority is reversed. A striking consequence of this fact is that individuals will be led to vote for outcomes that they would reject were they in a position to act decisively. In this regard we found the moral psychology Adam Smith (...) develops in The Theory of Moral Sentiments remarkably fecund in suggesting alternatives to what we call the standard theory of electoral behavior. (shrink)

The work of Henri Bergson has gone almost completely unnoticed in philosophy of sport literature. This in no way indicates the level of relevance his programme may carry for the subject. Many of the entrenched debates that have historically helped to shape the field are mirrored by Bergson's own concerns regarding perception and skill acquisition. As such, a thorough study of how the Bergsonian programme might approach the topic of athletic action is in no wise an idle pursuit? in fact, (...) very much the opposite. My intention in this paper is twofold: first, to indicate the natural commerce that exists between Bergson's philosophy and the philosophy of sport; second, and perhaps more ambitiously, to demonstrate that his approach to perception and action not only anticipates, but in some cases may help to edify, certain unresolved issues within the field. The paper develops in three parts. In part I, I provide a brief summary of Bergson's theory of perception as it is developed in Matter and Memory. Parts II and III will apply that theory to two of the central aspects of human motor activity: in part II, I investigate what it is to be in possession of skilled motor behaviour? to make that behaviour?automatic?, as it were; in part III, the controversial subject of what it is to acquire and modify skilled motor behaviour will be examined. (shrink)

The argument I defend in this paper takes for granted that the proceduralist indictment against judicial review is at least partly justifiable, and that a complete theory of democratic legitimacy will therefore attempt to address it to the greatest possible degree. I examine how the indictment can be addressed via the practice of nonparty participation, whereby members of the general public may seek participatory involvement in a court proceeding despite not being directly implicated by the dispute at issue. Through this (...) practice, courts acquire a means to expose themselves to a cross-section of societal influences, which in turn can be said to improve the legitimacy of the decisions they render from a procedural perspective. Importantly, however, such legitimacy will not be transmitted spontaneously, as if the mere fact that courts allow nonparties to participate is all that is needed to address the proceduralist's concern. The crux of my argument is that only when the practice is conceived in a particular way, and is subjected to the appropriate conditions, does it have a genuine chance of realizing its legitimating promise. (shrink)

Drawing on Peter Harrison's argument that individuals should be attributed a central role in analyses of the relationship between science and religion, this article proposes that an understanding of personality can help us better appreciate a person's attitudes to both science and religion. Rather than seeing an individual's attitudes to these two topics as separate, if sometimes overlapping, parts of their lives, it is suggested that both may result from psychological drives and sometimes from the same psychological drive. Two contrasting (...) case studies are employed to illustrate this proposal. First, Paul Dirac who, it is argued, was on the autistic spectrum, a personality profile that is often linked to both mathematical physics and atheism. By contrast, Michael Faraday's scientific practice and his commitment to a specific form of Christianity were underpinned by his need for security, as assured by the God‐given laws that operated in both the physical and moral domains. (shrink)

The paper explains and differentiates the concept of ‘fact’ in the legal setting. Fact and evidence, fact/falsity distinguished; fact and law considered -- a real difference or a pragmatic device? Questions of fact and degree considered, in themselves and in the context of jury trial and of appeals. Primary fact, factual inferences from primary fact, questions of classification of fact are considered. Whether inference is supported by evidence, and whether classification is correct may be questions of law. Issues of fact (...) and opinion, fact and comment, relative to freedom of speech, defamation etc: no clear distinction available. Legal problems concerning absence of workable distinctions. (shrink)

It has recently emerged that malarial, toxoplasmodial and related parasites contain a vestigial plastid (the organelle in which photosynthesis occurs in plants and algae). The function of the plastid in these obligate intracellular parasites has not been established. It seems likely that modern apicomplexans derive from photosynthetic predecessors, which perhaps formed associations with protists and invertebrates and abandoned autotrophy in favour of parasitism. Recognition of a third genetic compartment in these parasites proffers alternative strategies for combating a host of important (...) human and animal diseases. It also poses some fascinating questions about the evolutionary biology of this important group of pathogens. (shrink)

Dienes & Perner argue that volitional control in artificial grammar learning is best understood in terms of the distinction between implicit and explicit knowledge representations. We maintain that direct, explicit access to knowledge organised in a hierarchy of implicitness/explicitness is neither necessary nor sufficient to explain volitional control. People can invoke volitional control when their knowledge is implicit, as in the case of artificial grammar learning, and they can invoke volitional control when any part of their knowledge representation is implicit, (...) as can be seen by examining “feeling of knowing” phenomena. (shrink)

This article provides a short introduction to Friedrich Kittler’s 1980 essay ‘Authorship and Love’ by showing how it fits into the development of Kittler’s thought. The stark contrast between superficially similar scenes in Goethe’s Werther and Dante’s Divine Comedy, each of which is said to represent fundamentally different conceptualizations of authorship and love, is a revealing instance of Kittler's distinctive and polemical appropriation of French post-structuralism as well as of his subsequent switch from discourse analysis to media theory. Ultimately, ‘Authorship (...) and Love’ even points ahead to Kittler’s final work on music and mimesis in ancient Greece. (shrink)