Is what could have happened but never did as real as what did happen? What did happen, but isn't happening now, happened at another time. Analogously, one can say that what could have happened happens in another possible world. Whatever their views about the reality of such things as possible worlds, philosophers need to take this analogy seriously. Adriane Rini and Max Cresswell exhibit, in an easy step-by-step manner, the logical structure of temporal and modal discourse, and show that (...) every temporal construction has an exact parallel that requires a language that can refer to worlds, and vice versa. They make precise, in a way which can be articulated and tested, the claim that the parallel is at work behind even ordinary talk about time and modality. The book gives metaphysicians a sturdy framework for the investigation of time and modality - one that does not presuppose any particular metaphysical view. (shrink)

We investigate the long-term evolution of degree-degree correlations (assortativity) in functional brain networks from epilepsy patients. Functional networks are derived from continuous multi-day, multi-channel electroencephalographic data, which capture a wide range of physiological and pathophysiological activities. In contrast to previous studies which all reported functional brain networks to be assortative on average, even in case of various neurological and neurodegenerative disorders, we observe large fluctuations in time-resolved degree-degree correlations ranging from assortative to dissortative mixing. Moreover, in some patients these (...) fluctuations exhibit some periodic temporal structure which can be attributed, to a large extent, to daily rhythms. Relevant aspects of the epileptic process, particularly possible pre-seizure alterations, contribute marginally to the observed long-term fluctuations. Nevertheless, our findings suggest that physiological and pathophysiological activity may modify functional brain networks in a different and process-specific way. We evaluate factors that possibly influence the long-term evolution of degree-degree correlations. (shrink)

This early essay by Georg Simmel, first published in 1890, reflects on some sociological features of the phenomenon of the art exhibition in European culture at the end of the nineteenth century. The text presents Simmel's judgement at this time – in some respects negative, in other respects positive – of the consequences of the juxtaposition of multiple visual objects within definite temporary institutional spaces for future artistic production, organisation and reception. Particularly notable in the text are some themes (...) that look forward both to Simmel's own better-known essay of 1902, ‘The Metropolis and Mental Life’, and to Walter Benjamin's famous study of 1936, ‘The Work of Art in the Age of Mechanical Reproduction’. (shrink)

Is what could have happened but never did as real as what did happen? What did happen, but isn't happening now, happened at another time. Analogously, one can say that what could have happened happens in another possible world. Whatever their views about the reality of such things as possible worlds, philosophers need to take this analogy seriously. Adriane Rini and Max Cresswell exhibit, in an easy step-by-step manner, the logical structure of temporal and modal discourse, and show that (...) every temporal construction has an exact parallel that requires a language that can refer to worlds, and vice versa. They make precise, in a way which can be articulated and tested, the claim that the parallel is at work behind even ordinary talk about time and modality. The book gives metaphysicians a sturdy framework for the investigation of time and modality - one that does not presuppose any particular metaphysical view. (shrink)

What if gravity satisfied the Klein-Gordon equation? Both particle physics from the 1920s-30s and the 1890s Neumann-Seeliger modification of Newtonian gravity with exponential decay suggest considering a "graviton mass term" for gravity, which is _algebraic_ in the potential. Unlike Nordström's "massless" theory, massive scalar gravity is strictly special relativistic in the sense of being invariant under the Poincaré group but not the 15-parameter Bateman-Cunningham conformal group. It therefore exhibits the whole of Minkowski space-time structure, albeit only indirectly concerning volumes. (...) Massive scalar gravity is plausible in terms of relativistic field theory, while violating most interesting versions of Einstein's principles of general covariance, general relativity, equivalence, and Mach. Geometry is a poor guide to understanding massive scalar gravity: matter sees a conformally flat metric due to universal coupling, but gravity also sees the rest of the flat metric in the mass term. What is the 'true' geometry, one might wonder, in line with Poincaré's modal conventionality argument? Infinitely many theories exhibit this bimetric 'geometry,' all with the total stress-energy's trace as source; thus geometry does not explain the field equations. The irrelevance of the Ehlers-Pirani-Schild construction to a critique of conventionalism becomes evident when multi-geometry theories are contemplated. Much as Seeliger envisaged, the smooth massless limit indicates underdetermination of theories by data between massless and massive scalar gravities---indeed an unconceived alternative. At least one version easily could have been developed before General Relativity; it then would have motivated thinking of Einstein's equations along the lines of Einstein's newly re-appreciated "physical strategy" and particle physics and would have suggested a rivalry from massive spin 2 variants of General Relativity. The Putnam-Grünbaum debate on conventionality is revisited with an emphasis on the broad modal scope of conventionalist views. Massive scalar gravity thus contributes to a historically plausible rational reconstruction of much of 20th-21st century space-time philosophy in the light of particle physics. An appendix reconsiders the Malament-Weatherall-Manchak conformal restriction of conventionality and constructs the 'universal force' influencing the causal structure. Subsequent works will discuss how massive gravity could have provided a template for a more Kant-friendly space-time theory that would have blocked Moritz Schlick's supposed refutation of synthetic _a priori_ knowledge, and how Einstein's false analogy between the Neumann-Seeliger-Einstein modification of Newtonian gravity and the cosmological constant \Lambda generated lasting confusion that obscured massive gravity as a conceptual possibility. (shrink)

“Time Capsule” is a work-experience that lies somewhere between a local eventinstallation, a site-specific work in which the site itself is both my body and a remote database, a simulcast on TV and the Web, and interactive webscanning of my body. The live component of the piece was realised on November 11, 1997, in the context of the exhibition “Arte Suporte Computador”, at the cultural centre Casa da Rosas, in Sao Paulo, Brazil. “Time Capsule” was carried live on (...) the evening newscast of the TV station Canal 21 and on tape by two other TV stations (TV Manchete and TV Cultura). The webscast was transmitted by Casa das Rosas.The object that gives the piece its title is a microchip that contains a programmed identification number and that is integrated with a coil and a capacitor, all hermetically sealed in biocompatible glass. The temporal scale of the work is stretched between the ephemeral and the permanent; i.e., between the few minutes necessary for the completion of the basic procedure, the microchip implantation, and the permanent character of the implant. As with other underground time capsules, it is under the skin that this digital time capsule projects itself into the future. (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 English, two deictic space-time metaphors are in common usage: the Moving Ego metaphor conceptualizes the ego as moving forward through time and the Moving Time metaphor conceptualizes time as moving forward toward the ego . Although earlier research investigating the psychological reality of these metaphors has typically examined spatial influences on temporal reasoning , recent lines of research have extended beyond this, providing initial evidence that personality differences and emotional experiences may also influence how people (...) reason about events in time . In this article, we investigate whether these relationships have force in real life. Building on the effects of individual differences in self-reported conscientiousness and procrastination found by Duffy and Feist , we examined whether, in addition to self-reported conscientiousness and procrastination, there is a relationship between conscientious and procrastinating behaviors and temporal perspective. We found that participants who adopted the Moving Time perspective were more likely to exhibit conscientious behaviors, while those who adopted the Moving Ego perspective were more likely to procrastinate, suggesting that the earlier effects reach beyond the laboratory. (shrink)

The theorist who denies the objective reality of non-relational temporal properties, or ‘A-series’ determinations, must explain our experience of the passage of time. D.H. Mellor, a prominent denier of the objective reality of temporal passage, draws, in part, on Kant in offering a theory according to which the experience of temporal passage is the result of the projection of change in belief. But Mellor has missed some important points Kant has to make about time-awareness. It turns out that (...) Kant's theory of time-awareness also involves projection – but for him, the projection of temporal passage is necessary to any coherent experience at all, and for this reason events in the world cannot be represented except as exhibiting real tensed change. Consequently we cannot intelligibly suppose the world we know to be without the passage of time. This fact would permit a modest transcendental argument the conclusion of which is that we are entitled to describe the world in terms of temporal passage. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Time Together and Time ApartNeha Choksi (bio)The drawings to scale on the following pages depict multiple views I outlined while holding in my hand a single, small particolored stone. The silhouette leaves a hole for the stone to inhabit, were it still to exist. The colored pigment that shapes the absence of the stone is made by pulverizing this same stone.I pushed the pigment aside on the (...) recto to create the evacuated silhouette. Imagining the hole bored through to the other side, I colored the verso, too. All the pigment from the stone was used up in painting these multiple views.________The Crete Senesi area in Tuscany, where I found the stone, is formed from tiny fragments of small shells and sea organisms compacted with sediments of clays and sands from a sea that covered it millions of years ago. I fancy the stone contains evidence of the missing sea.I dislocated this stone during one of my multiple walks on a local strada bianchi near my temporary residence in a tiny village in Tuscany. I shared a summer there with six other artists and the coordinator as part of the Amant Residency Siena. I painted one stone view per member of our group. I made these drawings as a gift for them, for us, for our time together, and our time apart.October 11, 2023 Mumbai7 cotton paper sheets with stone pigment paint on recto and verso Each 7 ¾ x 5 inches [End Page 64] Click for larger view View full resolution[End Page 65] Click for larger view View full resolution[End Page 66] Click for larger view View full resolution[End Page 67] Click for larger view View full resolution[End Page 68] Click for larger view View full resolution[End Page 69] Click for larger view View full resolution[End Page 70] Click for larger view View full resolution[End Page 71] Click for larger view View full resolution[End Page 72] Click for larger view View full resolution[End Page 73] Click for larger view View full resolution[End Page 74] Click for larger view View full resolution[End Page 75] Click for larger view View full resolution[End Page 76] Click for larger view View full resolution[End Page 77] Click for larger view View full resolution[End Page 78]Neha Choksi Neha Choksi, in her work across performance, moving image, sculpture, and installation, probes lived experiences that negotiate relationships in unconventional settings. Harnessing stone to plant, animal to friends, publics to philosophy, her materially bound art engages the terms of our existence in ways personal and planetary. Choksi’s work has been widely exhibited, screened, or performed in the United States, Asia, the Middle East, Australia, the UK, and Europe; and is in notable public collections worldwide. Recent honors include the Amant Siena Studio & Research Residency, the City of Los Angeles Individual Artist Fellowship, the California Community Foundation Fellowship for Visual Artists, and the India Today Best New Media Artist of the Year Award. A monograph on a single artwork, Dismantling, was published in 2018. She currently co-edits Mimesis: Film as Performance Magazine. She lives and works in Los Angeles and Bombay.Copyright © 2023 Johns Hopkins University Press and SubStance, Inc... (shrink)

Aristotle’s views on time have received sporadic at tention over the years, but Ursula Coope’s elegantl y- written book is the first monograph available in En glish dedicated exclusively to the account that Ari stotle develops in the final five chapters of Physics IV. Three topics form the thematic core of the boo k: time’s relation to change, time’s status as a kind of numb er, and the unity and diversity of times. I shall t ouch on (...) each of these themes and indicate how I think Coope ’s interpretation fares. While I disagree with her reconstruction of the account on several central po ints, it exhibits a great deal of ingenuity and sophistication and deserves careful consideration. (shrink)

Shadmehr and Ahmed’s book is a welcome extension of optimal foraging theory and neuroeconomics, achieved by integrating both with parameters relating to effort and rate of movement. Their most persuasive and prolific data comes from saccades, where times before and after decision are reasonably determinate. Skeletal movements are less likely to exhibit such tidy temporal organisation.

This is the first day of our confinement here in Paris, which soon will feel a bit like house arrest. So, to help cheer you up, in these times of doom and gloom, I have decided to bring the museum to you in the form of a virtual exhibition thrice weekly. I have picked 25 photos from a work in progress I started years ago. The photos are portraits of visitors or guards in museums. It's candid photography, capturing life on (...) the run, a moment in time. I hope you will find many other ways to - Résidence numérique - Brigitte Cavanagh. (shrink)

A comparative study is made of the eigenvalue problems of electromagnetics and quantum mechanics, with special reference to the operations of spatial inversionP and time inversionT. Electromagnetics, which permits closer agreement with the dictates of relativity (when the latter is extended toP andT), exhibits characteristic differences with respect to quantum mechanics. An evaluation of these distinctions is presented against the backdrop of a choice between absolute scalar action and charge versus pseudoscalar action and charge.

In lieu of an abstract, here is a brief excerpt of the content:205 TIME AND THE IDEA OF TIME Hume entitled Part II of Book I of the Treatise "Of the Ideas of Space and Time." Students of this most obscure Part of the Book are aware, however, that he spends little time in it on time. The main reason for his concentration on space. is polemical. In Part II his primary object is to exhibit (...) the contradictions and absurdities implicit in the science of his day with its postulation of empty space and of the mathematics with its notion of infinite divisibility, and then to show how these difficulties can be overcome by the adoption and implementation of the theory of ideas he had developed in Part I. As a result, with the exception of a discussion that occupies approximately three pages in Section III, most of his references to time in Part II are little more than brief appendages tacked on to his arguments concerning space. Hume commentators have generally taken their cue from him. Although the literature contains substantial analyses of his views about space, very little can be found on the subject of time. In this paper, I shall attempt to add something to that slim literature. As its title indicates, this paper will be concerned with two subjects, time and the idea of time. Hume accepts the ordinary distinction between thé two. Time and our idea of time are separate realities, the former being a part of the world independent of us and the latter being a part of the content of our consciousness. I shall observe this distinction, beginning with an account of what Hume means by time and following that with an explanation of his theory of the origin and nature of the idea of time. After finishing these two expository sections I shall devote 206 the remainder of the paper to a critical examination of Hume's views on both subjects, ending with a suggestion about a possible alternative route he might have followed in his argument about time and the idea of time in Part II. A final preliminary point: Although Hume devotes most of his attention to space in Part II, he makes it clear that, because space and time (as well as our ideas of them) are analogous to each other in certain vital respects, his views concerning the former can easily be transferred and applied to the latter. 1. Time Hume states or implies several things about the nature of time in Part II. (1)He equates time with duration, treating the two terms as equivalent throughout his discussion. (2)Time is an objective reality, or aspect of the external world. This interpretation may be questioned because Hume never asserts an objectivistic view of time unequivocally and in certain passages writes in a way that could be interpreted as implying that time is a characteristic of our conscious experience. "As 'tis from the disposition of visible and tangible objects we receive the idea of space, so from the succession of ideas and impressions we form the idea of time..." (T 35). But later he writes: "...time is nothing but the manner, in which some real objects exist..." (T 64). Also, in the titles of his first two sections he makes a clear distinction, labelling Section I "Of the infinite divisibility of our ideas of space and time" and Section II "Of the infinite divisibility of space and time." Since, in Section II, it is apparent that he is talking about space as a part 207 of the external world, the natural inference is that he is talking about time in the same way, as, for example, when he writes, "The infinite divisibility of space implies that of time, as is evident from the nature of motion" (T 31). (3)Time is not infinitely divisible but is made up of parts Hume calls 'moments' (T 31). These moments are the 'building blocks' of time and are ultimate and indivisible. They are analogous to the ultimate, indivisible parts of space, which Hume labels 'mathematical points' (T 40). (4)The moments of time are not co-existent but successive. In this respect time differs from space. "'Tis also evident, that these parts [of... (shrink)

Several studies on time preference have found time inconsistency in both gain and loss preferences. However, the relationship between the two within the same person remains unclear; that is, does an individual who demonstrates time inconsistency for gain outcomes do so for losses as well? This paper reports on individuals’ time inconsistency for gains and losses in a laboratory setting. To obtain a precise comparison of individuals’ time inconsistency for gains and losses, we used Rohde’s (...) “DI -index” :1700–1716, 2018) and measured the level of time inconsistency, rather than merely identifying whether TI was present. This index represents how strongly a person exhibits present bias, and easily extends to the comparison between gain and loss preferences within the same person. Further, it allows the experiment to test for so-called future bias, which has been a focus area in recent time inconsistency literature. It is elicited through a non-parametric method, which avoids any specification errors in the analysis. Our findings are as follows: first, we found future bias in preferences for not only gains but also losses, and we confirmed that this tendency is consistent with previous findings on preferences for gains. Second, a positive correlation between time inconsistency for gains and losses was found at the individual level. Indeed, we could not find a significant difference between the two in most cases. (shrink)

ABSTRACT This essay examines the exhibition of dinosaurs at the American Museum of Natural History during the first two decades of the twentieth century. Dinosaurs provide an especially illuminating lens through which to view the history of museum display practices for two reasons: they made for remarkably spectacular exhibits; and they rested on contested theories about the anatomy, life history, and behavior of long-extinct animals to which curators had no direct observational access. The American Museum sought to capitalize on the (...) popularity of dinosaurs while mitigating the risks of mounting an overtly speculative display by fashioning them into a kind of mixed-media installation made of several elements, including fossilized bone, shellac, iron, and plaster. The resulting sculptures provided visitors with a vivid and lifelike imaginative experience. At the same time, curators, who were anxious to downplay the speculative nature of mounted dinosaurs, drew systematic attention to the material connection that tied individual pieces of fossilized bone to the actual past. Freestanding dinosaurs can therefore be read to have functioned as iconic sculptures that self-consciously advertised their indexical content. (shrink)

This paper investigates the connection between temporal attitudes (attitudes characterised by a concern (or lack thereof) about future and past events), beliefs about temporal ontology (beliefs about the existence of future and past events) and temporal preferences (preferences regarding where in time events are located). Our aim is to probe the connection between these preferences, attitudes, and beliefs, in order to better evaluate the normative status of these preferences. We investigate the hypothesis that there is a three-way association between (...) (a) being present-biased (that is, preferring that positive events are located in the present, and negative events are located in the non-present), (b) believing that past and future events do not exist and (c) tending to have present-focused rather than non-present-focused temporal attitudes. We find no such association. This suggests that insofar as temporal preferences and temporal attitudes are connected to the ways we represent time, they are not connected to the ways we represent temporal ontology; rather, they are more likely connected to the ways we represent relative movement in, or of, time. This has important consequences for, first, explaining why we exhibit these preferences and, second, for their normative evaluation. (shrink)

This paper proposes a view of time that takes passage to be the most basic temporal notion, instead of the usual A-theoretic and B-theoretic notions, and explores how we should think of a world that exhibits such a genuine temporal passage. It will be argued that an objective passage of time can only be made sense of from an atemporal point of view and only when it is able to constitute a genuine change of objects across time. (...) This requires that passage can flip one fact into a contrary fact, even though neither side of the temporal passage is privileged over the other. We can make sense of this if the world is inherently perspectival. Such an inherently perspectival world is characterized by fragmentalism, a view that has been introduced by Fine in his ‘Tense and Reality’ (2005). Unlike Fine's tense-theoretic fragmentalism though, the proposed view will be a fragmentalist view based in a primitive notion of passage. (shrink)

It is taken for granted that the explanation of the Universe’s space-time dimension belongs to the host of the arguments that exhibit the superiority of modern (inflationary) cosmology over the standard model. In the present paper some doubts are expressed . They are based upon the fact superstring theory is too formal to represent genuine unification of general relativity and quantum field theory. Neveretheless, the fact cannot exclude the opportunity that in future the superstring theory can become more physical. (...) Hence this paper does not aim to query neither string cosmology, nor superstring theory; it asks for “tolerance in the matters cosmological”. It advices the researchers not to dwell on the common way of unification and to take into consideration the other ways as well. (shrink)

This work investigates the finite-time control problem for a nonlinear four-tank cross-coupled liquid level system by the port-controlled Hamiltonian model. A fixed-free methodology is exhibited which can be used to simplify the controller design procedure. To get an adjustable convergent gain of the finite-time control, a feasible technique named damping normalization is proposed. A novel parameter autotuning algorithm is given to clarify the principle of choosing parameters of the PCH method. Furthermore, a finite-time controller is designed by (...) a state-error desired Hamiltonian function, and the relationship between the settling time and a parameter is given, which can be applied in practical engineering easily to adjust the settling time according to the industrial need. Finally, simulation and experimental results verify the effectiveness of the proposed algorithm. (shrink)

The COVID-19 pandemic has dramatically changed the patterns of lifestyle and posed psychological stress on pregnant women. However, the association of sleep duration and screen time with anxiety among pregnant women under the backdrop of the COVID-19 pandemic scenario has been poorly addressed. We conducted one large-scale, multicenter cross-sectional study which recruited 1794 pregnant women across middle and west China. Self-reported demographic characteristics, lifestyle, and mental health status were collected from 6th February to 8th May 2020. We investigated the (...) association of sleep duration and screen time with the risk of anxiety by multivariable logistic regression analysis and linear regression analysis after adjusting potential confounders. The dose-response relationship of sleep duration and screen time with anxiety was visualized using a cubic spline plot. Our data revealed that almost 35% of pregnant women suffered from anxiety during the COVID-19 pandemic. Sleep duration was dose-dependently associated with a lower risk of anxiety among pregnant women, while screen time exhibited a conversed effect. Notably, sleep duration synergistically combined with screen time to diminish the risk of anxiety. Taken together, sleep duration and screen time were independently and jointly associated with anxiety. Therefore, promoting a more active lifestyle and maintaining higher sleep quality could improve the mental health of pregnant women, especially under public health emergency. (shrink)

In 1987, Roy Sorensen coined the term 'parahistory' to denote the study of genuinely anachronistic artefacts delivered by time travel.¹ 'Parahistory' would thus stand to history rather as parapsychology is claimed to stand to psychology, i.e. the parahistorian would study historical data that were obtained through channels that orthodox science does not recognise. How might one establish credentials as a time traveller? What sort of evidence could a time-traveller point to in support of claims that would presumably (...) command a great deal of scepticism? While successful predictions might be one confirmatory tool, supporting evidence needn't take the form of predictions. (Although Sorensen offers an intriguing argument that a Humean about miracle-testimony would be obliged to reject any testimony to the occurrence of time travel.) Perhaps artefacts that time travellers retrieve from other times (past or future) could usefully supplement testimonial or predictive evidence for the parahistorian. However, this paper will argue, any appeal to past-artefactual evidence for parahistorical claims faces a dilemma that threatens to undermine its value: appeals to past-artefact evidence must either collapse into appeals to predictive evidence or see their value diminished by such past artefacts' necessarily exhibiting contradictory indicators of age and period. (shrink)

The Great Exhibition of 1851 in London was a large, highly significant affair that brought the innovations and industries of the world together under one roof. While it was indeed a global event, it has been argued, especially by people at the time, whether or not the exhibition was held for the great benefit of the British. This paper will argue that the primary motivation for the British was indeed their own benefit by looking at British prestige, what they (...) had to offer the exhibition, and what they stood to gain by hosting such an event. (shrink)

This chapter explains what Isaac Newton means with the phrase “absolute, true, and mathematical time” in order to discuss some of the philosophic issues that it gives rise to. It describes Newton's thought in light of a number of scientific, technological, and metaphysical issues that arose in seventeenth‐century natural philosophy. The first section discusses some of the relevant context from the history of Galilean, mathematical natural philosophy, especially as exhibited by the work of Christiaan Huygens. The second section offers (...) a close reading of what Newton says about time in the Principia's Scholium to the definitions. It argues that Newton allows us to conceptually distinguish between “true” and “absolute” time from the vantage point of Newton's dynamics. The third section, in the context of a brief account of Descartes' views on time, discusses the material that Newton added to the second edition of the Principia in the General Scholium. (shrink)

The perception of time cannot be reduced to a simple percept produced by an internal clock. The aim of the present study was therefore to investigate the role of the individual consciousness of time on temporal judgments. In the present study, the participants’ awareness of attention-related time distortions was assessed using a metacognitive questionnaire. The participants were also required to verbally judge a series of stimulus durations in a single or a dual task condition. The results revealed (...) that time was underestimated in the dual task compared to the single task. However, the accuracy of time judgments improved in line with the participants’ individual awareness of attentional time distortion: The more aware they were of the role of attention in time perception, the lower the time distortions they exhibited. Conscious awareness of time therefore plays a role in the accuracy of the time judgments made by human beings. (shrink)

This essay explores South African artist William Kentridge’s multimedia installation The Refusal of Time, first exhibited at documenta in 2012. In the material surrounding this installation, K...

Russell and Walker proposed different ways of constructing instants from events. For an explanation of "time as a continuum," Thomason favored Walker's construction. The present article shows that Russell's construction fares as well. To this end, a mathematical characterization problem is solved which corresponds to the characterization problem that Thomason solved with regard to Walker's construction. It is shown how to characterize those event structures (formally, interval orders) which, through Russell's construction of instants, become linear orders isomorphic to a (...) given (or, deriving, to some—nontrivial ordered) real interval. As tools, separate characterizations for each of resulting (i) Dedekind completeness, (ii) separability, (iii) plurality of elements, (iv) existence of certain endpoints are provided. Denseness is characterized to replace Russell's erroneous attempt. Somewhat minimal nonconstructive principles needed are exhibited, and some alternative approaches are surveyed. (shrink)

‘Water is H 2 O’ is naturally construed as an equivalence. What are the things to which the two predicates ‘is water’ and ‘is H 2 O’ apply? The equivalence presupposes that substance properties are distinguished from phase properties. A substance like water (H 2 O) exhibits various phases (solid, liquid, gas) under appropriate conditions, and a given (say liquid) phase may comprise several substances. What general features distinguish substance from phase properties? I tackle these questions on the basis of (...) an interpretation of a theorem of thermodynamics known as Gibbs' phase rule which systematically relates these two kinds of feature of matter. The interpretation develops the idea that the things substance and phase predicates apply to are quantities of matter which sustain mereological relations and operations and exploits these mereological features in distinguishing the two kinds of property. Gibbs' phase rule is a macroscopic principle applicable for macroscopic intervals of time. Bringing intervals of time into the picture calls for a more detailed consideration of the relation between macroscopic equilibria and the corresponding dynamic equilibria at the microlevel and throws into question the simple idea that quantities can always be regarded as collections of molecules. The account provides some insight into how the continuous, macroscopic conception of matter (‘gunk’) is reconciled with the discrete microscopic conception and illuminates the interpretation of substances present in mixtures. (shrink)

Mark Hinchliff concludes a recent paper, "The Puzzle of Change," with a section entitled "Is the Presentist Refuted by the Special Theory of Relativity?" His answer is "no." I respond by arguing that presentists face great difficulties in merely stating their position in Minkowski spacetime. I round up some likely candidates for the job and exhibit their deficiencies.

Modelling of contagious disease usually employs compartmental SEIR-like models where the waiting times in respective compartments are exponentially distributed. In this paper, we are interested in investigating how the distributions of sojourn times in infective compartments affect the dynamics and persistence of the contagious bovine pleuropneumonia, a chronic respiratory disease of cattle. Two kinds of extreme distributions of the sojourn times are considered: a Dirac delta-function and truncated Gaussian function leading to a model with (non-constant) delay and the classical exponential (...) distribution that stands for a model without delay. Expressions of the basic reproductive numbers are derived and dynamical behaviours are discussed for the three models. It is found that the spreading of disease exhibits wave-like oscillations for the time-delay dynamics. In contrast, the disease appears to last longer when the spreading is described by the classical dynamics without delay. Subsequently, the time-delay dynamics turns out to be more appropriate for the description of an experimental epidemic of CBPP. (shrink)

This article investigates the place that habit occupies in different ‘architectures of the person’, focusing particularly on constructions of the relations between habit and other components of personhood that are marked by time. Three such positions are examined: first, the relations between thought, will, memory, habit and instinct proposed by post-Darwinian accounts of ‘organic memory’; second, Henri Bergson’s account of the relations between habit, memory and becoming; and, third, the temporal aspects of Pierre Bourdieu’s concept of habitus understood as (...) a set of hereditable dispositions. These different ‘architectures of the person’ are considered with regard to the role they accord habit in trans-generational mechanisms of inheritance; the historicised forms of embodied personhood that they propose; and the manner in which they account for the emergence of a capacity for freedom that can (partially) offset the weight of the inherited past. It is argued that the imputation of such a capacity to some forms of personhood, but not others, is both shaped by and provides the conditions for the operation of liberal forms of government. The manner in which the conduct of those who exhibit such a capacity for freedom is brought under the direction of varied ‘authorities of freedom’ is given particular consideration. (shrink)

Although considerations based on contemporary space-time theories, such as special and general relativity, seem highly relevant to the debate about persistence, their significance has not been duly appreciated. My goal in this paper is twofold: (1) to reformulate the rival positions in the debate (i.e., endurantism [three-dimensionalism] and perdurantism [four-dimensionalism, the doctrine of temporal parts]) in the framework of special relativistic space-time; and (2) to argue that, when so reformulated, perdurantism exhibits explanatory advantages over endurantism. The argument builds (...) on the fact that four-dimensional entities extended in space as well as time are relativistically invariant in a way three-dimensional entities are not. (shrink)

The paper offers an explanation of the intuitive appeal of Saul Kripke's necessity of origin thesis, exhibiting it as the consequence of a temporally asymmetrical 'branching model' of possibilities which, in turn, rests on two plausible principles concerning possibility, time, and identity. Unlike some other accounts, my explanation dissociates the necessity of origin thesis from a commitment to individual essences or other sufficient conditions for identity across possible worlds. I conclude that although the branching model is not irresistible, its (...) rejection may necessitate the denial of a plausible principle that requires possibilities for actual individuals to be 'anchored' to their actual characteristics. (shrink)

The publication presents for the first time the B. Baradin’s theses to A. Dorzhiev’s lecture that was supposed to be delivered at the international Buddhist exhibition in Leningrad in 1927. A. Dorzhiev was a famous Buryat lama who received the academic title of Geshe (the highest philosophical academic degree in the Gelug tradition of Tibetan Buddhism) upon completion of his philosophical education in the monasteries of Mongolia and Tibet. After 1918, he was involved in organizational issues of the Buddhist (...) Sangha in Russia. B. Baradin was an academic scientist and public figure, a professor at St. Petersburg University, and the author of studies on the history and teachings of Tibetan Buddhism. After the revolution of 1917, he began working in Buryatia in various administrative positions, focusing on the organization of the scientific and cultural life of the Republic. Their main idea is that the modern world consists of the two equal parts - East and West, unification of which is possible and even necessary for the further development of humanity. The system-forming teaching of the East is Buddhism; and the lecture hold on those aspects of Buddhist philosophy that could be compared with the teachings of the West. Four points are highlighted: 1) Buddhism is comparable to Darwin’s theory in that both consider humans in the context of all living beings in an evolutionary manner; 2) Buddhism, like science, accepts the determinism principle; 3) the Buddhist concept of shunya is similar to the relativistic principles of physics; and 4) the system of Buddhist psychotechniques is similar to the theory of reflexology. B. Baradin concludes that Indo-Buddhist culture and European culture are complementary and their rapprochement will bring us closer to a truly universal culture. The theses mentioned here are, apparently, the first systematic exposition of the views of neo-Buddhists-renewalists on the points of convergence between Buddhist and Western cultures. (shrink)

The debate on personal persistence has been characterized by a dichotomy which is due to its still Cartesian framwork: On the one side we find proponents of psychological continuity who connect, in Locke’s tradition, the persistence of the person with the constancy of the first-person perspective in retrospection. On the other side, proponents of a biological approach take diachronic identity to consist in the continuity of the organism as the carrier of personal existence from a third-person-perspective. Thus, what accounts for (...) someone’s persistence over time, is the continuity of his mind on the one hand, and the continuity of his body on the other. In contrast to those views, the paper intends to show that bodily existence represents the basis of selfhood across time, both as the continuity of the experiential self and as the continuity of the autopoietic organism. On the one hand, the lived body conveys a continuity of the self from a first-person perspective, namely a pre-reflective feeling of sameness or a felt constancy of subjectivity. Moreover, an analysis of awakening and sleep shows that there is a continuous transition from full wakefulness to periods of deep sleep which may thus not be regarded as a complete interruption of subjective experience. On the other hand, this constancy converges with the continuity of the organismic life process as conceived from a third-person perspective. Thus, the experiential self of bodily subjectivity and the autopoietic self of the living organism should be regarded as two aspects of one and the same life process. Finally, the lived body also exhibits a specific form of memory that results from the continual embodiment of existence: it consists of all the affinities, capacities and experiences, which a person has acquired throughout his life. Thus, it provides a continuity of self that must not be actively produced through remembering, but rather integrates the person’s entire past in his present being and potentiality. (shrink)

At a time when professional art criticism is on the wane, the ancient quarrel between art and philosophy demands fresh answers. Professional art criticism provided a basis upon which to distinguish apt experiences of art from the idiosyncratic. However, currently the kind of narratives from which critics once drew are underplayed or discarded in contemporary exhibition design where the visual arts are concerned. This leaves open the possibility that art operates either as mere stimulant to private reverie or, in (...) the more contentful cases, as propaganda. The ancient quarrel between art and philosophy is that art influences surreptitiously while philosophy presents reasons that invite rational scrutiny. As such, in contrast to philosophy, art would undermine our agency. In July 2017, a group of philosophers gathered at the Art Gallery of NSW (AGNSW), in Sydney, Australia, in the presence of two AGNSW curators to explore the basis of their own experiences of selected artworks. Here, those commentaries are reproduced. Each reveal that objective grounds for an experience of art can be based in the community from which one draws one’s terms of reference. In our commentaries we see the expertise of the respective philosophical communities but other communities of culture or expertise might serve the same purpose and hence resolve the ancient quarrel. Before hearing these commentaries, I explain what is at stake when the ancient quarrel between art and philosophy is understood in contemporary terms. This Issue of the Curator also includes an article on the community-based art criticism that emerges from these commentaries followed by an exhibition review which reveals the incorrigible impulse (also demonstrated in the commentaries) to find the basis for the most apt experience of an artwork. A response by the AGNSW curators completes this issue. (shrink)

The writer examines the evidence regarding the claim that English lawyers of the early seventeenth century exhibited a jurisprudential outlook dominant enough to be correctly called ‘the common law mind’ - an understanding in which the common law was conceptualized as immemorially-old custom. He argues that there was no dominant common law mind in the period; that there were at least two widely-held orientations to the common law among common lawyers. One, held by some of the more traditional lawyers, did (...) emphasize the antiquity of the common law and identify it with custom; the other, taken by equally prominent lawyers who had been influenced by their educations in philosophy, logic and humanistic scholarship, was more concerned with conceptualizing the law as reason. The writer examines what lawyers meant when they spoke of the law as reason and about the artificial reason of the law. (shrink)

This paper reports the results of questionnaire-based research conducted at an exhibition of interactive humanoid robots that was held at the Osaka Science Museum, Japan. The aim of this exhibition was to investigate the feasibility of communication robots connected to a ubiquitous sensor network, under the assumption that these robots will be practically used in daily life in the not-so-distant future. More than 90,000 people visited the exhibition. A questionnaire was given to the visitors to explore their opinions of the (...) robots. Statistical analysis was done on the data of 2,301 respondents. It was found that the visitors’ opinions varied according to age; younger visitors did not necessarily like the robots more than elderly visitors; positive evaluation of the robots did not necessarily conflict with negative evaluations such as anxiety; there was no gender difference; and there was almost no correlation between opinions and the length of time spent near the robots. (shrink)

Presentism says that only present objects exist. But the view has trouble grounding past-tensed truths like “dinosaurs existed”. Standard Eternalism grounds those truths by positing the existence of past objects—like dinosaurs. But Standard Eternalism conflicts with the intuition that there is genuine change—the intuition that there once were dinosaurs and no longer are any. I offer a novel theory of time—‘The Imprint’—that does a better job preserving both the grounding and genuine change intuitions. The Imprint says that the past (...) and present exist, but where the present exhibits mass-energy, the past only consists of curved empty regions of spacetime. We therefore avoid saying that there are dinosaurs, since there is no mass-energy in the past; but the curvature of the past gives us a way to ground the truth that “dinosaurs existed”. (shrink)

Until recently, philosophers debating the rationality of time-biases have supposed that people exhibit a first-person hedonic bias toward the future, but that their non-hedonic and third-person preferences are time-neutral. Recent empirical work, however, suggests that our preferences are more nuanced. First, there is evidence that our third-person preferences exhibit time-neutrality only when the individual with respect to whom we have preferences—the preference target—is a random stranger about whom we know nothing; given access to some information about the (...) preference target, third-person preferences mirror first-person preferences. As a result, the simulation hypothesis has been proposed, according to which third-person preferences will mirror first-person preferences when we can simulate the mental states of the preference target. Second, there is evidence that we prefer negative hedonic events to be in our past (we are first-person negatively hedonically future-biased) only when we view future events as fixed and in no way under our control. By contrast, when we perceive it to be within our power to mitigate the badness of future events, we are first-person negatively hedonically past-biased. This is the mitigation hypothesis. We distinguish two versions of the mitigation hypothesis, the squirrelling version and the heuristic version. We ran a study which tested the simulation hypothesis, and which aimed to determine whether the squirrelling or the heuristic version of the mitigation hypothesis enjoys more empirical support. We found support for the heuristic version of the hypothesis, but no support for the squirrelling version. (shrink)

Recent research on autonoetic consciousness indicates that the ability to remember the past and the ability to project oneself into the future are closely related. The purpose of the present study was to confirm this proposition by examining whether the relationship observed between personality and episodic memory could be extended to episodic future thinking and, more generally, to investigate the influence of personality traits on self-information processing in the past and in the future. Results show that Neuroticism and Harm Avoidance (...) predict more negative past memories and future projections. Other personality dimensions exhibit a more limited influence on mental time travel . Therefore, our study provide an additional evidence to the idea that MTT into the past and into the future rely on a common set of processes by which past experiences are used to envision the future. (shrink)

Understanding time investment while solving problems is central to metacognitive research. By the Diminishing Criterion Model (DCM), time regulation is guided by two stopping rules: a confidence criterion that drops as time is invested in each problem and the maximum time to be invested. This combination generates curved confidence–time associations. We compared the belief that intelligence is malleable, a growth mindset, to the belief that intelligence is fixed, and to neutral control groups. We hypothesized that (...) a growth mindset leads people to selectively invest time in problems carrying the hope of improvement. This extra time makes the curved DCM pattern curvier. In two experiments, participants primed with growth, fixed, or control mindsets solved analogies (Experiment 1) and compound remote associates (Experiment 2). As expected, in both experiments a growth mindset exhibited a curvier confidence–time pattern, while the fixed mindset and control groups replicated previous confidence–time associations. Most additional time was invested in problems with intermediate difficulty levels, suggesting strategic time allocation. The study offers useful measures for delving into factors that affect thinking time allocation. (shrink)

Despite judging the central controversial thesis of this book false and arguments for it ultimately unconvincing, I highly recommend the book for its many philosophical virtues, prominent among them being breadth and clarity.1 1 Sullivan addresses all the major issues surrounding various time biases that decision-makers exhibit. Writing on topics that can often become overly technical, she spells her arguments out in the clearest prose, making the book ideal as an introduction to this interesting subdivision of practical reason, but (...) also, since packed with arguments, many original, and defending a counterintuitive if recently popular thesis, making this must reading for those familiar with its topics. (shrink)

Today, liberals face a predicament: how to defend liberal principles, when adherence to them seems to constitute a fatal disadvantage against unprincipled opponents. The challenge is not new. In the early years of the twentieth century, liberalism was attacked, by critics on both the right and, especially, the left for being hypocritical, naïve, irresponsible, and impotent. It couldn't, for example (anti-liberalists thought), address the acute inequality of imperial rule, racial segregation, and socio-economic poverty. These issues of social justice it was (...) claimed by critics required a politics marked by an uncompromising commitment to ultimate ends, and an unrelenting use of power. Faced with such sentiments and the practical successes of anti-liberal ideologies (i.e. Fascism, Nazism, and Communism) liberals felt pressure to silence their scruples and doubts, and embrace the confidence, ruthlessness, and intransigence exhibited by their opponents. But doing so seemed tantamount to abandoning liberal hopes for, and commitments to, human freedom and all they valued in the first place. In Liberalism for Dark Times, Cherniss tells the story of the liberal response to this challenge in the twentieth century. Through a close study of five leading intellectuals engaged in these debates-Max Weber, Raymond Aron, Albert Camus, Reinhold Niebuhr, and Isaiah Berlin-Cherniss reconstructs a distinctive, neglected strand of liberal thought. This strand defines and defends liberalism as a political ethos: a complex of dispositions, temperament, and sensibility and style-which include skepticism; openness to experience; and careful, discriminating judgment-that shape how individuals make choices, meet challenges, understand and pursue possibilities, and conduct themselves toward others in the course of political struggle. In reconstructing the history of, what he calls, a tempered liberalism, and formulating it as a distinctive political perspective, Cherniss offers an alternative to the prevalent ways of thinking about both, liberalism's history and the intellectual resources available to it today. (shrink)

The A-theory of time has intuitive and metaphysical appeal, but suffers from tension, if not inconsistency, with the special and general theories of relativity (STR and GTR). The A-theory requires a notion of global simultaneity invariant under the symmetries of the world's laws, those ostensible transformations of the state of the world that in fact leave the world as it was before. Relativistic physics, if read in a realistic sense, denies that there exists any notion of global simultaneity that (...) is invariant under the symmetries of the world's laws. If physics is at least a decent guide to metaphysics--as sympathies for scientific realism would suggest--then relativistic physics supports the B-theory. If there were a physically natural way to modify the symmetries of the physical laws so as to remove those that are repugnant to the A-theory, while retaining empirical adequacy, then such an altered physics might be attractive to the A-theorist and would weaken the support given by relativity to the B-theory. I exhibit a way to do so here, displaying a Lagrangian density explicitly containing distant simultaneity, yet implying Einstein's field equations. The modification involves a change in the nature of the lapse function and makes use of the Dirac-Bergmann formalism of constrained dynamics, which recently has been discussed much by John Earman. Here this formalism is adapted slightly to permit both local and global generalized coordinates. A classification of senses in which time might be absolute or not is made along the way. Some suggestions for extending the work by finding a first principles motivation are made. An appendix outlines an argument why many local presents are insufficient and a global present is attractive, while two more appendices review the Dirac-Bergmann apparatus for GTR and then apply it to the theory at hand. (shrink)