Tomás de Aquino distingue la cantidad como predicamento ( quantitas dimensiva ) de la medida de perfección de una cosa, su cantidad virtual ( quantitas virutalis or virtutis ). El Aquinate diferencia la cantidad virtual de la esencia, del ser y de la operación. El concepto de cantidad virtual juega un rol central en la metafísica de la participación, pues participar es como tomar una “parte” de un todo, y tal parte representa un determinado monto de perfección. (...) Por esta vía, la cantidad virtual se relaciona con la noción de virtus essendi . De la cantidad virtual derivan otros conceptos como los de igualdad virtual, contacto virtual, ubicación virtual, distancia virtual, etc., que reflejan la riqueza con que nuestro autor concibe el mundo cualitativo y espiritual. (shrink)

Kant's obscure essay entitled An Attempt to Introduce the Concept of Negative Quantities into Philosophy has received virtually no attention in the Kant literature. The essay has been in English translation for over twenty years, though not widely available. In his original 1983 translation, Gordon Treash argues that the Negative Quantities essay should be understood as part of an ongoing response to the philosophy of Christian Wolff. Like Hoffmann and Crusius before him, the Kant of 1763 is at odds with (...) the Leibnizian-Wolffian tradition of deductive metaphysics. He joins his predecessors in rejecting the assumption that the law of contradiction alone can provide proof of the principle of sufficient reason: -/- In his rejection of the possibility of deducing all philosophic truth from the law of contradiction, however, and in the clear recognition that this impossibility has immediate consequences for defense of the law of sufficient reason, Kant's work most definitely and positively constitutes a line of succession from Hoffmann and Crusius (Treash, 1983, p. 25). -/- The recognition that Kant's Negative Quantities essay is part of a response to the tradition of deductive metaphysics is, without a doubt, an important contribution to the Kant literature. However, there is still more to be said about this neglected essay. The full significance of the paper becomes known through its ties to a second, empiricist line of succession. Clues to this second line of succession can be found in Kant's prefatory remarks concerning Euler's 1748 Reflections on Space and Time and Crusius' 1749 Guidance in the Orderly and Careful Consideration of Natural Events. As I will show, these prefatory remarks suggest a reading of Kant's Negative Quantities paper that reaches beyond German deductive metaphysics to engage a debate regarding the application of mathematics in philosophy initiated by George Berkeley. (shrink)

Video games are ethically controversial. Some video games are effective training tools for learning various skills and approaches to problem-solving, but some video games are notorious for promoting discriminatory and barbaric behavior. We consider such ethical pros and cons of video games, but we also present a more fundamental ethical issue about video games. Most video games have a bias toward self-centered decision-making. Often the decision-making driver is not the impact of the decision on society but rather the quantity (...) of rewards for their individual character. This bias can be an obstacle to employing good ethical analysis and good ethical decision-making in video games. In this paper we discuss the ethical theory of Just Consequentialism and show how it can be used to introduce ethical values into video game design and how it can be useful for ethical decision-making, even rapid ethical decision-making, in both virtual world and real worlds. (shrink)

Deleuze's interpretation of Spinozan philosophy is intrinsically related to the concept of intensity. Attributes are defined as intensive qualities, modal essences as intensive quantities or degrees of power; the life of affects corresponds to continuous variations in intensity. This essay will show why Deleuze needs the concept of intensity for his reading of Spinozan philosophy as a philosophy of expressive immanence. It will also discuss the problems that spring from this reading: in what way, if any, are modal essences modified (...) by the intensive variations of affects? How can the Spinozan conception of eternal modal essences be reconciled with the idea of affections of essence? What is the ethical import of the life of existing modes, when modal essences are considered as eternal? While these questions, in particular the last two, confront each commentator on Spinoza and demand a solution in one way or another, the essay will conclude with a question which is posed from an exclusively Deleuzian perspective: why is the concept of the virtual, which takes centre stage in Deleuze's own philosophy of immanence, missing in his account of Spinoza? (shrink)

One challenge while learning scientific concepts is to select relevant information and to integrate different representations of the learning content into one coherent mental model. Virtual reality learning environments offer new possibilities to support learners and foster learning processes. Whether learning in VR is successful, however, depends to a large extent on the design of the VRLE and the learners themselves. Hence, adding supportive elements in VRLEs, such as annotations, might facilitate the learning process by guiding attention and supporting (...) the selection of relevant information. Additionally, the mapping of pictorial and verbal information is eased by these annotations. The beneficial effect of annotations is highly dependent on learners' intrinsic motivation as intrinsic motivation while learning also affects the information selection and visual search patterns. In our experimental study, we compared two conditions: learning in a VRLE with or without annotations. We measured the learning outcome on three different levels. Additionally, we investigated intrinsic motivation as a moderator for the effect of annotations on learning outcome. We found no significant main effect of annotations on learning outcome. The moderating effect of intrinsic motivation for annotations on the overall learning outcome was significant. Our results imply that learners are either intrinsically motivated or need additional support by annotations as these support the selection of relevant information in the VRLE and therefore enable them to learn successfully. Which type or quantity of annotations supports learning processes best needs to be explored in future research. (shrink)

The apparent ineffectuality of quantum physics to reconcile its evolution rule with measurement phenomena has polarized the community of scholars working on the subject into, roughly, two sorts of camps. On the one side there are those who perceive the problem to be that of finding an interpretation of the conceptual structures of quantum theory whereon the two elements can be reconciled without having to revise the canonical understanding of either. On the other side are those who see measurement phenomena (...) as posing a challenge: the challenge of revising either the canonical equation or its canonical application in such a way that no conflict arises between it and laboratory data. ;This dissertation focuses on proposals of the latter sort. The centerpiece of the thesis is a reinterpretation of the Theory of Macrosystems of Daneri, Loinger and Prosperi. I show that this theory is most charitably interpreted as a proposal for reconciling measurement phenomena, not so much with Schrodinger dynamics, but rather with a constraint on the evolution map. It is, in other words, an account of how measurement phenomena is consistent with a certain set of dynamical behaviors. The focus on behaviors rather than equations and their solutions is characteristic of recent approaches to studying phenomena in classical contexts, both of phenomena to do with the approach to equilibrium and in situations involving far-from-equilibrium phenomena. The focus on behaviors is motivated by recognition that equations of motion for microscopic subcomponents of many-body systems do not wear on their countenances anything useful about the macroscopic behaviors of the systems they collectively describe--and are, in addition, virtually unsolvable. Therefore it profits an investigator to do without microscopic equations of motion in analyzing phenomena. The Theory of Macrosystems likewise "does without" equations of motion; I show that the account it gives is independent of closed-form rules of evolution. For this reason I call it an agnostic solution to the measurement problem--and show that this is an altogether different approach to the problem than any other so far conceived. (shrink)

The apparent ineffectuality of quantum physics to reconcile its evolution rule with measurement phenomena has polarized the community of scholars working on the subject into, roughly, two sorts of camps. On the one side there are those who perceive the problem to be that of finding an interpretation of the conceptual structures of quantum theory whereon the two elements can be reconciled without having to revise the canonical understanding of either. On the other side are those who see measurement phenomena (...) as posing a challenge: the challenge of revising either the canonical equation or its canonical application in such a way that no conflict arises between it and laboratory data. ;This dissertation focuses on proposals of the latter sort. The centerpiece of the thesis is a reinterpretation of the Theory of Macrosystems of Daneri, Loinger and Prosperi. I show that this theory is most charitably interpreted as a proposal for reconciling measurement phenomena, not so much with Schrodinger dynamics, but rather with a constraint on the evolution map. It is, in other words, an account of how measurement phenomena is consistent with a certain set of dynamical behaviors. The focus on behaviors rather than equations and their solutions is characteristic of recent approaches to studying phenomena in classical contexts, both of phenomena to do with the approach to equilibrium and in situations involving far-from-equilibrium phenomena. The focus on behaviors is motivated by recognition that equations of motion for microscopic subcomponents of many-body systems do not wear on their countenances anything useful about the macroscopic behaviors of the systems they collectively describe--and are, in addition, virtually unsolvable. Therefore it profits an investigator to do without microscopic equations of motion in analyzing phenomena. The Theory of Macrosystems likewise "does without" equations of motion; I show that the account it gives is independent of closed-form rules of evolution. For this reason I call it an agnostic solution to the measurement problem--and show that this is an altogether different approach to the problem than any other so far conceived. (shrink)

This is a book about space. On a first level, it reflects traditional Japanese ideas of space against various “items” of Western culture. Among these items are Bakhtin's “dialogicity”, Wittgenstein’s Lebensform, and “virtual space” or “globalized” space as representatives of the latest development of an “alienated”, modern spatial experience. Some of the Western concepts of space appear as negative counter examples to “basho-like”, Japanese places; others turn out to be compatible with the Japanese idea of space. On a second (...) level, the book attempts to synthesize, by constantly transgressing the limits of a purely comparative activity, a quantity which the author believes to be existent in Japanese culture that is called “the virtual”. Be it Kuki Shûzô's hermeneutics of non-foundation or his ontology of dream, Nishida Kitarô’s virtual definition of the body of state, or Kimura Bin's notion of “in-between” (aida) that is so closely associated with the “virtual space” of Noh plays: what all these conceptions have in common is that they aim to transcend a flat notion of “reality” by developing “the virtual” as a complex ontological unity. (shrink)

The setting in which people generate ideas and work collaboratively to solve problems is gradually shifting from traditional face-to-face communities to virtual communities. Virtual communities are, therefore, becoming a new source of creative ideas. Nevertheless, online creativity is not without challenges. The main obstacle seems to be a lack of active engagement from participants within these virtual communities, resulting in a low quality and quantity of creative content when compared to traditional methods of creation. Research suggests (...) that successfully generating creative ideas online involves sustained, active engagement among collaborators. A number of studies have investigated various factors related to the generation of creative ideas within virtual communities. However, a comprehensive understanding of contributing factors remains elusive. This study examines past research on the factors that drive creative ideas generation in online creative communities through a systematic literature review. The study seeks to analyze research findings over the past decade and provide an overview of the main driving factors, research areas, research trends, and implications for future research. Web of Science and Scopus were used to identify relevant articles, while Google Scholar was used to minimize the risk of missing any valuable data related to the aim of this study. The results provide an overview of the studies examining creative ideas generation within virtual communities. By approaching the subject matter from three primary perspectives, this paper identifies influencing factors associated with the successful generation of creative ideas online. The results of the paper also provide an overview of the research methods and guiding theories adopted by current researchers. The paper concludes with research trends and recommendations for future research. (shrink)

Psychobiological responses to music have been examined previously in various naturalistic settings in adults. Choir singing seems to be associated with positive psychobiological outcomes in adults. However, evidence on the effectiveness of singing in children and adolescents is sparse. The COVID-19 outbreak is significantly affecting society now and in the future, including how individuals engage with music. The COVID-19 pandemic is occurring at a time when virtual participation in musical experiences such as singing in a virtual choir has (...) become more prevalent. However, it remains unclear whether virtual singing leads to different responses in comparison with in-person singing. We evaluated the psychobiological effects of in-person choral singing in comparison with the effects of virtual choral singing in a naturalistic pilot within-subject study. A group of children and young adolescents from a school in Salzburg, Austria were recruited to take part in the study. Subjective measures were taken pre- and post-singing sessions once a week. Additionally, salivary biomarkers and quantity of social contacts were assessed pre- and post-singing sessions every second week. Psychological stability, self-esteem, emotional competences, and chronic stress levels were measured at the beginning of in-person singing as well as at the beginning and the end of the virtual singing. We observed a positive impact on mood after both in-person and virtual singing. Over time, in-person singing showed a pre-post decrease in salivary cortisol, while virtual singing showed a moderate increase. Moreover, a greater reduction in stress, positive change in calmness, and higher values of social contacts could be observed for the in-person setting compared to the virtual one. In addition, we observed positive changes in psychological stability, maladaptive emotional competences, chronic stress levels, hair cortisol, self-contingency and quality of life. Our preliminary findings suggest that group singing may provide benefits for children and adolescents. In-person singing in particular seems to have a stronger psychobiological effect. (shrink)

ObjectiveVirtual reality grasping exercise training helps patients participate actively in their recovery and is a critical approach to the rehabilitation of hand dysfunction. This study aimed to explore the effects of active participation and VR grasping on brain function combined with the kinematic information obtained during VR exercises.MethodsThe cerebral oxygenation signals of the prefrontal cortex, the motor cortex, and the occipital cortex were measured by functional near-infrared spectroscopy in 18 young people during the resting state, grasping movements, and VR grasping (...) movements. The EPPlus plug-in was used to collect the hand motion data during simulated interactive grasping. The wavelet amplitude of each cerebral cortex and the wavelet phase coherence of each pair of channels were calculated by wavelet analysis. The total difference in acceleration difference of the hand in the VR grasping movements was calculated to acquire kinematic characteristics. The cortical activation and brain functional connectivity of each brain region were compared and analyzed, and a significant correlation was found between VR grasping movements and brain region activation.ResultsCompared with the resting state, the WA values of LPFC, RPFC, LMC, RMC, and ROC increased during the grasping movements and the VR grasping movements, these changes were significant in LPFC and LMC. The WA values of LMC in the VR grasping movements were significantly higher than those in the grasping movements. The WPCO of the cerebral cortex increased during grasping exercise compared with the resting state. Nevertheless, the number of significant functional connections during VR grasping decreased significantly, and only the WPCO strength between the LPFC and LMC was enhanced. The increased WA of the LPFC, RPFC, LMC, and RMC during VR grasping movements compared with the resting state showed a significant negative correlation with KCs.ConclusionThe VR grasping movements can improve the activation and FC intensity of the ipsilateral brain region, inhibit the FC of the contralateral brain region, and reduce the quantity of brain resources allocated to the task. Thus, ordered grasping exercises can enhance active participation in rehabilitation and help to improve brain function. (shrink)

Virtually all the earlier critics — including Sidgwick and the Oxford Idealists — thought J. S. Mill’s arguments for qualities of pleasure and their ranking unacceptable. More recently there has been something of a reversal of this opinion, with commentators such as Skorupski, Donner, Berger and Wilson supporting Mill, and other writers, such as Edwards and Sprigge, arguing that qualitative hedonism is plausible. This paper reconsiders some of the arguments of F.H. Bradley and other earlier critics who dismissed Mill’s (...) class='Hi'>quantity-quality distinction. (shrink)

A central claim of Deleuze's reading of Bergson is that Bergson's distinction between space as an extensive multiplicity and duration as an intensive multiplicity is inspired by the distinction between discrete and continuous manifolds found in Bernhard Riemann's 1854 thesis on the foundations of geometry. Yet there is no evidence from Bergson that Riemann influences his division, and the distinction between the discrete and continuous is hardly a Riemannian invention. Claiming Riemann's influence, however, allows Deleuze to argue that quantity, (...) in the form of ‘virtual number’, still pertains to continuous multiplicities. This not only supports Deleuze's attempt to redeem Bergson's argument against Einstein in Duration and Simultaneity, but also allows Deleuze to position Bergson against Hegelian dialectics. The use of Riemann is thereby an important element of the incorporation of Bergson into Deleuze's larger early project of developing an anti-Hegelian philosophy of difference. This article first reviews the role of discrete and continuous multiplicities or manifolds in Riemann's Habilitationsschrift, and how Riemann uses them to establish the foundations of an intrinsic geometry. It then outlines how Deleuze reinterprets Riemann's thesis to make it a credible resource for Deleuze's Bergsonism. Finally, it explores the limits of this move, and how Deleuze's later move away from Bergson turns on the rejection of an assumption of Riemann's thesis, that of ‘flatness in smallest parts’, which Deleuze challenges with the idea, taken from Riemann's contemporary, Richard Dedekind, of the irrational cut. (shrink)

Developments in genetics, cyber-technology, nanotechnology, biotechnology, artificial intelligence, and other areas hold the promise – and the peril – of redefining what it means to be human. In addition to hedonism or a desire for self-improvement, the possibilities of these technologies plus the rational concern of falling behind a potential adversary produce a classic security dilemma. These competitive pressures among states, firms, and emerging “super-empowered individuals” encourage the development and dissemination of these technologies, and already the possibilities are being explored (...) by actors in conflict. This security dilemma, plus the nature of the technologies themselves, makes it virtually certain that attempts at regulation will fail. Instead, we should expect “arms races” of quantity and quality of improvements, complicated by differing conceptions of what improvement means. This paper explores these pressures and outcomes, as well as general consequences of the potential modification of “human nature” for global and human security. It finds that whatever forms or enhancements we possess, in a transhuman or posthuman future politics will not be transcended. Critical problems of security will continue to challenge ourselves and our descendants. (shrink)

The infinitesimal methods commonly used in the 17th and 18th centuries to solve analytical problems had a great deal of elegance and intuitive appeal. But the notion of infinitesimal itself was flawed by contradictions. These arose as a result of attempting to representchange in terms ofstatic conceptions. Now, one may regard infinitesimals as the residual traces of change after the process of change has been terminated. The difficulty was that these residual traces could not logically coexist with the static quantities (...) traditionally employed by mathematics. The solution to this difficulty, as it turns out, is to regard these quantities asalso being subject to (a form of) change, for then they will have the same nature as the infinitesimals representing the residual traces of change, and will become,ipso facto, compatible with these latter.In fact, the category-theoretic models which realize the Principle of Infinitesimal Linearity may themselves be regarded as representations of a general concept of variation (cf. Bell (1986)). While the static set-theoretical models represent change or motion by making a detour through the actual (but static) infinite, the varying category-theoretic models enable such change to be representeddirectly, thus permitting the introduction of geometric infinitesimals and, as we have attempted to demonstrate in this paper, the virtually complete incorporation of the methods of the early calculus.It is surely a remarkable — even an ironic — fact that the contradiction between the flux of the objective world and the stasis of mathematical entities has found its resolution in category theory, a branch of mathematics commonly, and, as one now sees, mistakenly, regarded as the summit of gratuitous abstraction. (shrink)

Dâwûd al-Qarisî (Dâvûd al-Karsî) was a versatile and prolific 18th century Ottoman scholar who studied in İstanbul and Egypt and then taught for long years in various centers of learning like Egypt, Cyprus, Karaman, and İstanbul. He held high esteem for Mehmed Efendi of Birgi (Imâm Birgivî/Birgili, d.1573), out of respect for whom, towards the end of his life, Karsî, like Birgivî, occupied himself with teaching in the town of Birgi, where he died in 1756 and was buried next to (...) Birgivî. Better known for his following works on Arabic language and rhetoric and on the prophetic traditions (hadith): Sharḥu uṣûli’l-ḥadîth li’l-Birgivî; Sharḥu’l-Ḳaṣîdati’n-nûniyya (two commentaries, in Arabic and Turkish); Şarḥu’l-Emsileti’l-mukhtalifa fi’ṣ-ṣarf (two commentaries, in Arabic and Turkish); Sharḥu’l-Binâʾ; Sharḥu’l-ʿAvâmil; and Sharḥu İzhâri’l-asrâr, Karsî has actually composed textbooks in quite different fields. Hence the hundreds of manuscript copies of his works in world libraries. Many of his works were also recurrently printed in the Ottoman period. One of the neglected aspects of Karsî is his identity as a logician. Although he authored ambitious and potent works in the field of logic, this aspect of him has not been subject to modern studies. Even his bibliography has not been established so far (with scattered manuscript copies of his works and incomplete catalogue entries). This article primarily and in a long research based on manuscript copies and bibliographic sources, identifies twelve works on logic that Karsî has authored. We have clarified the works that are frequently mistaken for each other, and, especially, have definitively established his authorship of a voluminous commentary on al-Kâtibî’s al-Shamsiyya, of which commentary a second manuscript copy has been identified and described together with the other copy. Next is handled his most famous work of logic, the Sharhu Îsâghûcî, which constitutes an important and assertive ring in the tradition of commentaries on Îsâghûcî. We describe in detail the nine manuscript copies of this work that have been identified in various libraries. The critical text of Karsî’s Sharhu Îsâghûcî, whose composition was finished on 5 March 1745, has been prepared based on the following four manuscripts: (1) MS Kayseri Raşid Efendi Kütüphanesi, No. 857, ff.1v-3v, dated 1746, that is, only one year after the composition of the work; (2) MS Bursa İnebey Yazma Eser Kütüphanesi, Genel, No.794B, ff.96v-114v, dated 1755; (3) MS Millet Kütüphanesi, Ali Emiri Efendi Arapça, No. 1752, ff.48v-58r, dated 1760; (4) MS Beyazıt Yazma Eser Kütüphanesi, Beyazıt, No. 3129, ff.41v-55v, dated 8 March 1772. While preparing the critical text, we have applied the Center for Islamic Studies (İslam Araştırmaları Merkezi, İSAM)’s method of optional text choice. The critical text is preceded by a content analysis. Karsî is well aware of the preceding tradition of commentary on Îsâghûcî, and has composed his own commentary as a ‘simile’ or alternative to the commentary by Mollâ Fanârî which was famous and current in his own day. Karsî’s statement “the commentary in one day and one night” is a reference to Mollâ Fanârî who had stated that he started writing his commentary in the morning and finished it by the evening. Karsî, who spent long years in the Egyptian scholarly and cultural basin, adopted the religious-sciences-centered ‘instrumentalist’ understanding of logic that was dominant in the Egypt-Maghrib region. Therefore, no matter how famous they were, he criticized those theoretical, long, and detailed works of logic which mingled with philosophy; and defended and favored authoring functional and cogent logic texts that were beneficial, in terms of religious sciences, to the seekers of knowledge and the scholars. Therefore, in a manner not frequently encountered in other texts of its kind, he refers to the writings and views of Muhammad b. Yûsuf al-Sanûsî (d.1490), the great representative of this logical school in the Egyptian-Maghrib region. Where there is divergence between the views of the ‘earlier scholars’ (mutaqaddimûn) like Ibn Sînâ and his followers and the ‘later scholars’ (muta’akhkhirûn), i.e., post-Fakhr al-dîn al-Râzî logicians, Karsî is careful to distance himself from partisanship, preferring sometimes the views of the earliers, other times those of the laters. For instance, on the eight conditions proposed for the realization of contradiction, he finds truth to be with al-Fârâbî, who proposed “unity in the predicative attribution” as the single condition for the realization of contradiction. Similarly, on the subject matter of Logic, he tried to reconcile the mutaqaddimûn’s notion of ‘second intelligibles’ with the muta’akhkhirûn’s notion of ‘apprehensional and declarational knowledge,’ suggesting that not much difference exists between the two, on the grounds that both notions are limited to the aspect of ‘known things that lead to the knowledge of unknown things.’ Karsî asserts that established and commonly used metaphors have, according to the verifying scholars, signification by correspondence (dalâlat al-mutâbaqah), adding also that it should not be ignored that such metaphors may change from society to society and from time to time. Karsî also endorses the earlier scholars’ position concerning the impossibility of quiddity (mâhiyya) being composed of two co-extensive parts, and emphasizes that credit should not be given to later scholars’ position who see it possible. According to the verifying scholars (muhaqqîqûn), it is possible to make definition (hadd) by mentioning only difference (fasl), in which case it becomes an imperfect definition (hadd nâqis). He is of the opinion that the definition of the proposition (qadiyya) in al-Taftâzânî’s Tahdhîb is clearer and more complete: “a proposition is an expression that bears the possibility of being true or false”. He states that in the division of proposition according to quantity what is taken into consideration is the subject (mawdû‘) in categorical propositions, and the temporal aspect of the antecedent (muqaddam) in hypothetical propositions. As for the unquantified, indefinite proposition (qadiyya muhmalah), Karsî assumes that if it is not about the problems of the sciences, then it is virtually/potentially a particular proposition (qadiyya juz’iyyah); but if it is about the problems of the sciences, then it is virtually/potentially a universal proposition (qadiyya kulliyyah). This being the general rule about the ambiguous (muhmal) propositions, he nevertheless contends that, because its subject (mawdû‘) is negated, it is preferable to consider a negative ambiguous (sâliba muhmalah) proposition like “human (insân) is not standing” to be a virtually/potentially universal negative (sâliba kulliyyâh) proposition. He states that a disjunctive hypothetical proposition (shartiyya al-munfasila) that is composed of more than two parts/units is only seemingly so, and that in reality it cannot be composed of more than two units. Syllogism (qiyâs), according to Karsî, is the ultimate purpose (al-maqsad al-aqsâ) and the most valuable subject-matter of the science of Logic. For him, the entire range of topics that are handled before this one are only prolegomena to it. This approach of Karsî clearly reveals how much the ‘demonstration (burhân)-centered’ approach of the founding figures of the Muslim tradition of logic like al-Fârâbî and Ibn Sînâ has changed. al-Abharî, in his Îsâghûjî makes no mention of ‘conversion by contradiction’ (‘aks al-naqîd). Therefore, Karsî, too, in his commentary, does not touch upon the issue. However, in his Îsâghûjî al-jadîd Karsî does handle the conversion by contradiction and its rules. Following the method of Îsâghûjî, in his commentary Karsî shortly touches on the four figures (shakl) of conjuctive syllogism (qiyâs iqtirânî) and their conditions, after which he passes to the first figure (shakl), which is considered ‘the balance of the sciences’ (mi‘yâr al-‘ulûm), explaining the four moods (darb) of it. In his Îsâghûjî al-jadîd, however, Karsî handles all the four figures (shakl) with all their related moods (darb), where he speaks of fife moods (darb) of the fourth figure (shakl). The topic of ‘modal propositions’ (al-muwajjahât) and of ‘modal syllogism’ (al-mukhtalitât), both of which do not take place in the Îsâghûjî, are not mentioned by Karsî as well, either in his commentary on Îsâghûjî or in his Îsâghûjî al-jadîd. Karsî proposes that the certainties (yaqîniyyât), of which demonstration (burhân) is made, have seven, not six, divisions. After mentioning (1) axioms/first principles (awwaliyyât), (2) observata/sensuals (mushâhadât), (3) experta/empiricals (mujarrabât), (4) acumenalia (hadthiyyât), (5) testata (mutawâtirât), and (6) instictives (fitriyyât), that is, all the ‘propositions accompanied by their demonstrations,’ Karsî states that these six divisions, which do not need research and reflection (nazar), are called badîhiyyât (self-evidents), and constitute the foundations (usûl) of certainties (yaqîniyyât). As the seventh division he mentions (7) the nazariyyât (theoreticals), which are known via the badîhiyyât, end up in them, and therefore convey certainty (yaqîn). For Karsî, the nazariyyât/theoreticals, which constitute the seventh division of yaqîniyyât/certainties, are too numerous, and constitute the branches (far‘) of yaqîniyyât. Every time the concept of ‘Mughâlata’ (sophistry) comes forth in the traditional sections on the five arts usually appended to logic works, Karsî often gives examples from what he sees as extreme sûfî sayings, lamenting that these expressions are so widespread and held in esteem. He sometimes criticizes these expressions. However, it is observed that he does not reject tasawwuf in toto, but excludes from his criticism the mystical views and approaches of the truth-abiding (ahl al-haqq), shârî‘â-observant (mutasharri‘) leading sufis who have reached to the highest level of karâmah. (shrink)

Chemistry is concerned with all aspects of the changing of one kind of matter into another. It has many parts and all but one of these are so different from all the adjacent sciences that their distinctness is obvious; the exception is physical chemistry. The activities of its practitioners resemble prima facie those of physicists. These however deal with unchanging matter that retains its chemical identity, and virtually all their experimental information is numerical. The physical chemist's concerns are the nature, (...) extent, and rate of chemical changes, and on these much information may be gathered by the observer's unaided senses.A fundamental feature or chemistry with few parallels in other sciences is that the variables determining chemical behaviour include the purity of reaction vessels, reagents, and the gas-phase in contact with these, as well as the exact experimental procedures when bringing about the chemical changes. For this reason, when encountering ostensibly new chemical phenomena, it is even more important than in other areas to distinguish between repeatability (of phenomena, e.g. explosions) and reproducibility (of quantities, e.g. reduction potentials). The distinction is not always clear, as differences of degree may develop into differences of kind. Unrepeatability may be of great heuristic significance, but irreproducibility is often of trivial origin. Examples from the author's researches illustrate how chemical behaviour, e.g. electrochemical conductivity or the nature of a product, such as the shape of a polymer molecule, can be altered profoundly by very small changes of experimental conditions, which is uncommon in other sciences. (shrink)

Presentism is the view that only present temporal entities (tenselessly) exist. A widely-discussed problem for presentism concerns causation and, more specifically, the supposed cross-temporally relational character of it. I think that the best reply to this problem can already be found in the literature on temporal ontology: it consists, roughly, in showing that (at least) some of the main approaches to causation can be rephrased so as to avoid commitment to any cross-temporal relation, including the causal relation itself. The main (...) purpose of this paper is to extend this reply to the process view, an approach to causation that has not been considered within this debate until now. I shall do this by taking into account Dowe’s conserved quantity theory—a recent and prominent theory of this sort— and employing it as a proxy for the other major process theories of causation. In dealing with Dowe’s process theory of causation, however, two additional problems must be faced: one concerns the four-dimensional spacetime framework on which its formulation relies; the other concerns the very notion of causal process (and the companion notion of causal interaction). While the presentistic account of Dowe’s theory (and, virtually, of the process view of causation in general) put forth in this paper is intended primarily as a contribution to the mentioned paraphrase- based enterprise of reconciliation between presentism and causation, I shall also offer some reasons for presentists to prefer the process view of causation to the other views of causation that have already been reconciled with presentism. (shrink)

Studying populations, be it a microbe colony or mankind, is important for understanding how complex systems evolve and exist. Such knowledge also often provides insights into evolution, history and different aspects of human life. By and large, populations’ prosperity and decline is about transformation of certain resources into quantity and other characteristics of populations through growth, replication, expansion and acquisition of resources. We introduce a general model of population change, applicable to different types of populations, which interconnects numerous factors (...) influencing population dynamics, such as nutrient influx and nutrient consumption, reproduction period, reproduction rate, etc. It is also possible to take into account specific growth features of individual organisms. We considered two recently discovered distinct growth scenarios: first, when organisms do not change their grown mass regardless of nutrients availability, and the second when organisms can reduce their grown mass by several times in a nutritionally poor environment. We found that nutrient supply and reproduction period are two major factors influencing the shape of population growth curves. There is also a difference in population dynamics between these two groups. Organisms belonging to the second group are significantly more adaptive to reduction of nutrients and far more resistant to extinction. Also, such organisms have substantially more frequent and lesser in amplitude fluctuations of population quantity for the same periodic nutrient supply (compared to the first group). Proposed model allows adequately describing virtually any possible growth scenario, including complex ones with periodic and irregular nutrient supply and other changing parameters, which present approaches cannot do. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Fallout from Government-Sponsored Radiation ResearchCarol Mason Spicer (bio)On December 28, 1993, Energy Secretary Hazel R. O'Leary publicly appealed to both the executive and legislative branches of the United States Government to consider compensation for individuals who were harmed by their exposure to ionizing radiation while enrolled in government-sponsored studies conducted between 1940 and the early 1970s.1 The call for compensation was issued three weeks after Secretary O'Leary disclosed that (...) radiation experiments involving humans, sometimes without their consent, had occurred under the auspices of the Atomic Energy Commission (AEC), a forerunner of the Department of Energy (DOE). Secretary O'Leary directed her department to investigate the nature and extent of the experiments, report on their medical and ethical acceptability, and locate the research subjects or their families.Background to the Federal Advisory CommitteeDespite the fact that the existence of many government-sponsored radiation experiments was not a secret—much of the research was reported at the time in scientific journals, and in 1986, Representative Edward J. Markey (D-MA) conducted congressional hearings on such radiation research—Secretary O'Leary's disclosure of the AEC experiments and her call for compensation made the experiments common knowledge and sparked a swift and complex governmental response involving both the executive and legislative branches.It is curious that the "radiation experiments" have garnered so much attention now, since they were virtually ignored in the wake of the 1986 hearings. Secretary O'Leary's disclosure of the radiation studies grew out of a general reassessment of secrecy in government. In April 1993, the Clinton administration set out to review the system of government secrecy that evolved during the Cold War, and in May 1993, DOE began reviewing and declassifying files pertaining to nuclear weapons research. When Dan Reicher, a top aide to Secretary O'Leary, informed her in November of the impending publication of an Albuquerque Tribune investigative report (Welsome 1993) on an experiment conducted between 1945 and 1947 in which 18 subjects were injected with plutonium, [End Page 147] the topic of questionable research involving the exposure of human subjects to radiation was added to the DOE list of information to be disclosed. At the time, it was thought to be but one small part of a massive quantity of DOE information to be made public.As part of its effort to investigate the radiation experiments, DOE established a toll-free telephone hot line for individuals who thought they might have been the subjects of radiation exposure experiments. The hot line, originally staffed by three people to handle the anticipated few dozen calls per day, received more than 2,000 calls in the first week. By early January the hot line was flooded with 6,000 to 10,000 calls daily, and its staff had increased more than ten-fold. Although many of the calls were deemed not to be candidates for further investigation, the extent of the radiation-related experiments, sponsored not only by AEC, but also by the military and other government departments and agencies, took officials by surprise.On December 30, the Department of Defense, the Department of Veterans Affairs, and the National Aeronautics and Space Administration all announced that they were initiating thorough reviews of their files to determine the extent and nature of any radiation experiments conducted under their auspices.2 In January, the CIA and the Department of Health and Human Services, including the National Institutes of Health, followed suit.The White House publicly entered the arena in late December announcing that it would hold a meeting on January 3, 1994, to help coordinate the government's investigative effort. At the same time, Senator Edward M. Kennedy (D-MA) called for a mid-January congressional hearing to investigate experiments conducted between 1946 and 1956 in which mentally retarded boys at the Fernald State School in Massachusetts were fed radioactive iron supplements or milk containing radioactive calcium to enable researchers to trace the absorption of those nutrients. Senator Kennedy's hearing, conducted by the Subcommittee on Health of the Senate Committee on Labor and Human Resources, was the first of a number of congressional hearings held earlier this year to investigate the... (shrink)

The advent of the post-Stalin "thaw," particularly the period after 1956, was marked by a spectacular expansion in the publishing of translated Western writing and also, on occasion, of editions in the original languages: the virtual ban on import of Western books was, as of 1975, never relaxed. The more permissive political atmosphere favored the publication of a vastly larger variety of Western authors and titles and provision for the Soviet public of much larger quantities of such books in (...) the country's bookstores and libraries. While the improvement was very impressive in itself, abundant data attest that it was far from adequate to satisfy reader demand.1 Among the beneficiaries, books by American authors stood out the more prominently since it was these that were most discriminated against during the years immediately preceding.2 Decades of neglect, to say nothing of politically inspired selectivity, resulted in such incongruities as the first Russian translation of Melville's Moby Dick in 1961—more than a century after the novel's appearance—and the first Soviet publication of any work by Henry James in 1973. It was not until the 1960's that Russians had an opportunity to read Faulkner—but then, the same was true of Kafka. However unevenly, the range of American literature, both old and new, now made available to Soviet readers is gradually expanding. · 1. The overall problem is discussed in detail in this writer's forthcoming book, A Decade of Euphoria: Western Literature in Post-Stalin Russia, 1954-64 . · 2. For a thorough and illuminating discussion of the fate of American literature in the U.S.S.R. from the Revolution until the early post-Stalin years, see Deming Brown, Soviet Attitudes toward American Writing . Interesting statistical data on the first post-Stalin years may also be found in Melville J. Ruggles, "American Books in Soviet Publishing," Slavic Review 20, n.3 : 419-35. A useful, very brief list of selected works of American writing published by 1968, though not entirely as complete as it purports to be, may be found in M.O. Mendel'son, A.N. Nikolyukin, R.M. Samarin, eds., Problemy literature S. Sh. A. XX. veka , pp. 391-517. Unfortunately, the Soviet bibliography contains no information on press runs of the books listed. Maurice Friedberg, head of the Department of Slavic Languages and Literatures at the University of Illinois, is the author of numerous essays and articles on Soviet literature. Professor Friedberg's most recent book, A Decade of Euphoria: Western Literature in Post-Stalin Russia, 1954-1964, will be published this year. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:470 HISTORY OF PHILOSOPHY of fundamental notions (e.g.,"creator" and "demiurge") are omnipresent. Sometimes even a confusion happens of Anaxagoras with Democritus when the "atom" is ascribed to Anaxagoras (p. 48). And the author does not seem to feel the fatal inadequacy of merely second-hand knowledge. While he in longura et latum argues with Aristotelian presentations and misrepresentations of Anaxagorean tenets, there is good reason for the suspicion that he (...) might never have read even one authentic sentence written by Anaxagoras himself. For those interested in general cultural history, this book, the religious diatribe of a modem Zoroastrian believer, is very worthwhile reading. For the historian of philosophy, itis of rather modest value. P-~LIX M. CLEVE New School for Social Research New York City The Esthetics of the Middle Ages. By Edgar De Bruyne. Trans. Eileen B. Hennessy. (New York: Frederick Uugar, 1969. Pp. viii+232. $6.50) This book has a very complex character. It is the English translation of a French work, L'Esth~tique du moyen dge,I which, in turn, is a one-volume abridged version by Edgar De Bruyne of his own original three-volume work, I~tudes d'Esth~tique M~di~vale.2 Thus, one may evaluate this book either as a translation or, presupposing the faithfulness and correctness of the translation itself,as a relatively short work by E. De Bruyne, or else in its relation to or as compared with the original three-volume work. I will confine myself here to the lattertwo considerations.3 First, considering this book in comparison with the three-volume original work, one of the principal writings of De Bruyne and one of the most significant contemporary contributions to the history of medieval aesthetics, we can find both quantitative and qualitative differences between the original work and its abridged version. The quantitative difference is considerable. While the abridged work, at least in its English translation, is less than a quarter of a thousand pages in length, the original work includes altogether 1,224 pages 4 and is thus more than five times longer than thc translated abridged version of it. The qualitative or methodological difference is at least equally great. In the original work, each of the three volumes deals primarily with the various medieval authors of aesthetic works and doctrines in a chronological order.5 In contrast, the contents of the translated abridged version follow a topical arrangement with chronology playing only a subordinate role, if any at all, within Louvain. L'InstitutSupdrieur de Philosophic, 1947. Brugge: De Tempel, 1946. s I have had no access to the abridged French original. 9 Vol. I, xiv+370; II, x-{-420; III,x-F400. 9 VoL I: Boethius to Erigena; II. "L'l~poque Romane," from the Carolingian period to the schools of Chartres and St. Victor; and Ill:the thirteenthcentury, from St. Bernard to Duns Scotus. BOOK REVIEWS 471 each topic. The six chapters are entitled, "'The Sources," "The Fundamental Principles," "Various Esthetic Systems," "The Esthetic Experience," "Art," and "The Fine Arts." To this may be added a third difference that is the result of the first two differences. There is virtually neither any direct quotation from any author on any topic, nor a~y direct reference to texts in the works of medieval authors mentioned or discussed. While the quantitative difference in itself is understandable, since only a scholar specializing in this field would read over 1,200 pages on medieval aesthetics, and while the qualitative difference is perfectly justified in terms of an intelligent summary, the absence especially of direct references to discussed texts is, as will be shown below, deeply regxettable. So much for the relative consideration of this translated abridged work. Let us next consider the abridged work in itself in the form of a positive and a negative evaluation. Second, despite the relative brevity of the work, one finds this book extremely valuable both in terms of the quantity and the quality of the data it contains. As to quantity, De Bruyne manages to compress an enormous amount of information about medieval aesthetic thought into this book. The significance of this, to confine ourselves at this point only... (shrink)

These ten lectures articulate a distinctive vision of the structure and workings of the human mind, drawing from research on embodied cognition as well as from historically more entrenched approaches to the study of human thought. On the author’s view, multifarious materials co-contribute to the production of virtually all forms of human behavior, rendering implausible the idea that human action is best explained by processes taking place in an autonomous mental arena – those in the conscious mind or occurring at (...) the so-called personal level. Rather, human behavior issues from a widely varied, though nevertheless integrated, collection of states and mechanisms, the integrated nature of which is determined by a form of clustering in the components’ contributions to the production of intelligent behavior. This package of resources, the cognitive system, is the human self. Among its elements, the cognitive system includes a vast number of representations, many subsets of which share their content. On the author’s view, redundancy of content itself constitutes an important explanatory quantity; the greater the extent of content-redundancy among representations that co-contribute to the production of an instance of behavior, the more fluid the behavior. In the course of developing and applying these views, the author addresses questions about the content of mental representations, extended cognition, the value of knowledge, and group minds. (shrink)

The Secret Doctrine comprises a virtual encyclopaedia of the "anciently universal wisdom-tradition" -- scarcely an issue of consequence in the broad range of human experience is left untouched. As part of the Secret Doctrine Centenary project, this 441-page Index provides ready access to the vast quantity of material from many cultures set forth in the SD's original two volumes published in 1888. Due to the topics covered, it is as much an index of ideas as it is of (...) subjects, works, persons, and proper names. To aid the reader, major subject entries are cross-referenced; foreign terms are identified by language and, where possible, given in both their 1888 spelling(s) and as modernly transliterated, often with one or two word definitions. Subentries are arranged alphabetically. Cited works and authors, whose titles or names are not given in the SD are placed in brackets for convenient identification. Also included is an Appendix of foreign phrases with translation and source reference -- all helping to make this Index an invaluable reference tool for students of The Secret Doctrine. (shrink)

A key moment in the development of Deleuze’s Difference and Repetition is signaled by the introduction, during the discussion of the asymmetric synthesis of the sensible, of the concepts of spatium and intensive quantities. The description of the characteristics of this field of individuation and the type of entities that inhabit it is necessary for thinking the relationship between the differential elements that compose ideas and the state of affairs in which they become incarnated. In other words, in order to (...) define the passage between the virtual and the actual, it is necessary to make use of a “non-divisible transcendental principle” that works as a stage in which certain agents—the spatio-temporal dynamisms—play the role of the genetic principle behind extended reality and its quantitative and qualitative determinations. This dynamic process is what Deleuze calls “the method of dramatisation”. However, even if this reference to theater is crucial in the book’s conceptual economy, it is particularly obscure and elliptical. The aim of this article is to clarify the sense of this reference and the reach of the link between individuation and theater. To achieve this purpose, we will examine closely the use that Deleuze makes of some of Friedrich Hölderlin’s poetological categories in his description of the third passive synthesis of time. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:470 HISTORY OF PHILOSOPHY of fundamental notions (e.g.,"creator" and "demiurge") are omnipresent. Sometimes even a confusion happens of Anaxagoras with Democritus when the "atom" is ascribed to Anaxagoras (p. 48). And the author does not seem to feel the fatal inadequacy of merely second-hand knowledge. While he in longura et latum argues with Aristotelian presentations and misrepresentations of Anaxagorean tenets, there is good reason for the suspicion that he (...) might never have read even one authentic sentence written by Anaxagoras himself. For those interested in general cultural history, this book, the religious diatribe of a modem Zoroastrian believer, is very worthwhile reading. For the historian of philosophy, itis of rather modest value. P-~LIX M. CLEVE New School for Social Research New York City The Esthetics of the Middle Ages. By Edgar De Bruyne. Trans. Eileen B. Hennessy. (New York: Frederick Uugar, 1969. Pp. viii+232. $6.50) This book has a very complex character. It is the English translation of a French work, L'Esth~tique du moyen dge,I which, in turn, is a one-volume abridged version by Edgar De Bruyne of his own original three-volume work, I~tudes d'Esth~tique M~di~vale.2 Thus, one may evaluate this book either as a translation or, presupposing the faithfulness and correctness of the translation itself,as a relatively short work by E. De Bruyne, or else in its relation to or as compared with the original three-volume work. I will confine myself here to the lattertwo considerations.3 First, considering this book in comparison with the three-volume original work, one of the principal writings of De Bruyne and one of the most significant contemporary contributions to the history of medieval aesthetics, we can find both quantitative and qualitative differences between the original work and its abridged version. The quantitative difference is considerable. While the abridged work, at least in its English translation, is less than a quarter of a thousand pages in length, the original work includes altogether 1,224 pages 4 and is thus more than five times longer than thc translated abridged version of it. The qualitative or methodological difference is at least equally great. In the original work, each of the three volumes deals primarily with the various medieval authors of aesthetic works and doctrines in a chronological order.5 In contrast, the contents of the translated abridged version follow a topical arrangement with chronology playing only a subordinate role, if any at all, within Louvain. L'InstitutSupdrieur de Philosophic, 1947. Brugge: De Tempel, 1946. s I have had no access to the abridged French original. 9 Vol. I, xiv+370; II, x-{-420; III,x-F400. 9 VoL I: Boethius to Erigena; II. "L'l~poque Romane," from the Carolingian period to the schools of Chartres and St. Victor; and Ill:the thirteenthcentury, from St. Bernard to Duns Scotus. BOOK REVIEWS 471 each topic. The six chapters are entitled, "'The Sources," "The Fundamental Principles," "Various Esthetic Systems," "The Esthetic Experience," "Art," and "The Fine Arts." To this may be added a third difference that is the result of the first two differences. There is virtually neither any direct quotation from any author on any topic, nor a~y direct reference to texts in the works of medieval authors mentioned or discussed. While the quantitative difference in itself is understandable, since only a scholar specializing in this field would read over 1,200 pages on medieval aesthetics, and while the qualitative difference is perfectly justified in terms of an intelligent summary, the absence especially of direct references to discussed texts is, as will be shown below, deeply regxettable. So much for the relative consideration of this translated abridged work. Let us next consider the abridged work in itself in the form of a positive and a negative evaluation. Second, despite the relative brevity of the work, one finds this book extremely valuable both in terms of the quantity and the quality of the data it contains. As to quantity, De Bruyne manages to compress an enormous amount of information about medieval aesthetic thought into this book. The significance of this, to confine ourselves at this point only... (shrink)

Despite the widespread belief in a positive influence of research on education, the empirical evidence is lacking. Several authors have questioned the appropriateness of the operationalisation of both aspects of the relation between teaching and research. This article takes a closer look at the research questions in empirical studies on the nexus between teaching and research and examines the used variables and their measurement techniques. The study reveals that the used variables and their operationalisation are diverse as well as limited. (...) There is for example a diversity in the investigated population, the level of analysis, the nature of the institutions investigated or the questionnaires used. The operationalisation of both teaching and research is limited. Student learning or the way research is integrated into teaching are virtually absent and the measurement of research is mostly confined to the quantity of the research output. This calls for a more systematic research agenda in which student learning is investigated along with more fine grained measures of teaching and in which the relation of these two indicators and the research proficiency of faculty are looked at. (shrink)

I argue that virtual reality is a sort of genuine reality. In particular, I argue for virtual digitalism, on which virtual objects are real digital objects, and against virtual fictionalism, on which virtual objects are fictional objects. I also argue that perception in virtual reality need not be illusory, and that life in virtual worlds can have roughly the same sort of value as life in non-virtual worlds.

In this article, we present a new conception of internal relations between quantity tropes falling under determinates and determinables. We begin by providing a novel characterization of the necessary relations between these tropes as basic internal relations. The core ideas here are that the existence of the relata is sufficient for their being internally related, and that their being related does not require the existence of any specific entities distinct from the relata. We argue that quantity tropes are, (...) as determinate particular natures, internally related by certain relations of proportion and order. By being determined by the nature of tropes, the relations of proportion and order remain invariant in conventional choice of unit for any quantity and give rise to natural divisions among tropes. As a consequence, tropes fall under distinct determinables and determinates. Our conception provides an accurate account of quantitative distances between tropes but avoids commitment to determinable universals. In this important respect, it compares favorably with the standard conception taking exact similarity and quantitative distances as primitive internal relations. Moreover, we argue for the superiority of our approach in comparison with two additional recent accounts of the similarity of quantity tropes. (shrink)

Quantity is the first category that Aristotle lists after substance. It has extraordinary epistemological clarity: "2+2=4" is the model of a self-evident and universally known truth. Continuous quantities such as the ratio of circumference to diameter of a circle are as clearly known as discrete ones. The theory that mathematics was "the science of quantity" was once the leading philosophy of mathematics. The article looks at puzzles in the classification and epistemology of quantity.

The concept system around 'quantity' and 'quantity value' is fundamental for measurement science, but some very basic issues are still open on such concepts and their relation. This paper argues that quantity values are in fact individual quantities, and that a complementarity exists between measurands and quantity values. This proposal is grounded on the analysis of three basic 'equality' relations: (i) between quantities, (ii) between quantity values and (iii) between quantities and quantity values. A (...) consistent characterization of such concepts is obtained, which is then generalized to 'property' and 'property value'. This analysis also throws some light on the elusive concept of magnitude. (shrink)

The history of humankind is full of examples that indicate a constant desire to make human beings more moral. Nowadays, technological breakthroughs might have a significant impact on our moral character and abilities. This is the case of Virtual Reality (VR) technologies. The aim of this paper is to consider the ethical aspects of the use of VR in enhancing empathy. First, we will offer an introduction to VR, explaining its fundamental features, devices and concepts. Then, we will approach (...) the characterization of VR as an “empathy machine,” showing why this medium has aroused so much interest and why, nevertheless, we do not believe it is the ideal way to enhance empathy. As an alternative, we will consider fostering empathy-related abilities through virtual embodiment in avatars. In the conclusion, however, we will, we will examine some of the serious concerns related to the ethical relevance of empathy and will defend the philosophical case for a reason-guided empathy, also suggesting specific guidelines for possible future developments of empathy enhancement projects through VR embodied experiences. (shrink)

The words in children's language learning environments are strongly predictive of cognitive development and school achievement. But how do we measure language environments and do so at the scale of the many words that children hear day in, day out? The quantity and quality of words in a child's input are typically measured in terms of total amount of talk and the lexical diversity in that talk. There are disagreements in the literature whether amount or diversity is the more (...) critical measure of the input. Here we analyze the properties of a large corpus of speech to children and simulate learning environments that differ in amount of talk per unit time, lexical diversity, and the contexts of talk. The central conclusion is that what researchers need to theoretically understand, measure, and change is not the total amount of words, or the diversity of words, but the function that relates total words to the diversity of words, and how that function changes across different contexts of talk. (shrink)

Every day, in many situations, we use expressions which seem only vaguely to provide us with information. The weather forecaster tells us that "some showers are likely in Northern regions during the night", a statement which is vague with respect to number of showers, location, and time. Yet such messages are informative, and often it is not possible for the producer of the message to be more precise. A tutor tells his students that "only a few students fail their exams (...) outright". This does not give a precise incidence. Yet it might be equally misleading to do so. For example, to say that 12% failed outright last year says nothing about other years, while to say an average of 8% over the last five years says nothing about variability. We argue that a precise, numerical statement can be sometimes more misleading in reality than a vague statement. Many researchers in psychology have attempted to capture the meaning of quantities by relating them to scales of quantity. The book explores this idea in detail and shows with original studies how these expressions also serve to control attention and to convey information about the expectations held by those involved in the communication. The book works towards a psychological theory of the meaning of quantifiers and similarly vague terms. New links are drawn between formal theories of quantification and psychological experimentation. (shrink)

Gricean pragmatics. Saying vs. implicating ; Discourse and cooperation ; Conversational implicatures ; Generalised vs. particularised ; Cancellability ; Gricean reasoning and the pragmatics of what is said -- The standard recipe for Q-implicatures. The standard recipe ; Inference to the best explanation ; Weak implicatures and competence ; Relevance ; Conclusion -- Scalar implicatures. Horn scales and the generative view ; Implicatures and downward entailing environments ; Disjunction : exclusivity and ignorance ; Conclusion -- Psychological plausibility. Charges of psychological (...) inadequacy ; Logical complexity ; Abduction ; Incremental processing ; The intentional stance ; Alternatives ; Conclusion -- Nonce inference or defaults?. True defaults ; Strong defaultism ; Weak defaultism ; Contextualism ; Conclusion -- Intentions, alternatives, and free choice. Free choice ; Problems with the standard recipe ; Intentions first ; Free choice explained ; Comparing alternatives ; Two flavours of Q-implicature ; Conclusion -- Embedded implicatures : the problems. The problems ; Varieties of conventionalism ; Against conventionalism ; Conclusion -- Embedded implicatures : a Gricean approach. Disjunction ; Belief reports ; Factives and other presupposition inducers ; Indefinites ; Contrastive construals and lexical pragmatics ; Conclusion. (shrink)

In a recent study by Cai et al. about water shortages in Beijing-Tianjin-Hebei urban areas, virtual water has become the central concept of the groundwater security strategy by suggesting increasing imports of water-intensive agricultural products instead of utilizing the depleted groundwater resources for production. However, despite reviewing the content, we could not see how the authors discussed the households’ economic and financial issues from both production and consumption perspectives.

The goal of this article is to present a first list of ethical concerns that may arise from research and personal use of virtual reality (VR) and related technology, and to offer concrete recommendations for minimizing those risks. Many of the recommendations call for focused research initiatives. In the first part of the article, we discuss the relevant evidence from psychology that motivates our concerns. In Section “Plasticity in the Human Mind,” we cover some of the main results suggesting (...) that one’s environment can influence one’s psychological states, as well as recent work on inducing illusions of embodiment. Then, in Section “Illusions of Embodiment and Their Lasting Effect,” we go on to discuss recent evidence indicating that immersion in VR can have psychological effects that last after leaving the virtual environment. In the second part of the article, we turn to the risks and recommendations. We begin, in Section “The Research Ethics of VR,” with the research ethics of VR, covering six main topics: the limits of experimental environments, informed consent, clinical risks, dual-use, online research, and a general point about the limitations of a code of conduct for research. Then, in Section “Risks for Individuals and Society,” we turn to the risks of VR for the general public, covering four main topics: long-term immersion, neglect of the social and physical environment, risky content, and privacy. We offer concrete recommendations for each of these 10 topics, summarized in Table 1. (shrink)

Quantities are naturally viewed as functions, whose arguments may be construed as situations, events, objects, etc. We explore the question of the range of these functions: should it be construed as the real numbers (or some subset thereof)? This is Carnap's view. It has attractive features, specifically, what Carnap views as ontological economy. Or should the range of a quantity be a set of magnitudes? This may have been Helmholtz's view, and it, too, has attractive features. It reveals the (...) close connection between measurement and natural law, it makes dimensional analysis intelligible, and explains the concern of scientists and engineers with units in equations. It leaves the philosophical problem of the relation between the structure of magnitudes and the structure of the reals. What explains it? And is it always the same? We will argue that on the whole, construing the values of quantities as magnitudes has some advantages, and that (as Helmholtz seems to suggest in "Numbering and Measuring from an Epistemological Viewpoint") the relation between magnitudes and real numbers can be based on foundational similarities of structure. (shrink)

This book explores what it means to exist in virtual worlds. Chiefly drawing on the philosophical traditions of existentialism, it articulates the idea that — by means of our technical equipment and coordinated practices — human beings disclose contexts or worlds in which they can perceive, feel, act, and think. More specifically, this book discusses how virtual worlds allow human beings to take new perspectives on their values and beliefs, and explore previously unexperienced ways of being. Virtual (...) Existentialism will be useful for scholars working in the fields of philosophy, anthropology, media studies, and digital game studies. (shrink)

This paper expands Rami Ali’s dissolution of the gamer’s dilemma (Ethics Inf Technol 17:267-274, 2015). Morgan Luck’s gamer’s dilemma (Ethics Inf Technol 11(1):31-36, 2009) rests on our having diverging intuition when considering virtual murder and virtual child molestation in video games. Virtual murder is seemingly permissible, when virtual child molestation is not and there is no obvious morally relevant difference between the two. Ali argues that virtual murder and virtual child molestation are equally permissible/impermissible (...) when considered under different modes of engagement. To this end, Ali distinguishes between story-telling gameplay and simulation games, discussing both in depth. I build on the dissolution by looking into competitive gameplay in order to consider what the morally relevant difference between virtual murder and virtual child molestation might be when competing in a video game. I argue that when competitors consent to participate in a competition, the rules of the competition supersede everyday moral intuitions. As such, virtual competitions ought to represent such consent from virtual characters. Virtual children cannot be represented as giving consent to be molested because (1) children cannot be represented as giving sexual consent, and (2) consent to be possibly molested cannot be given. This creates a morally relevant difference between murder and molestation. By fully addressing competitive gameplay, I answer Luck’s worry that Ali’s dissolution is incomplete (Ethics Inf Technol 20:157-162, 2018). (shrink)

Grice's Quantity maxims have been widely misinterpreted as enjoining a speaker to make the strongest claim that she can, while respecting the other conversational maxims. Although many writers on the topic of conversational implicature interpret the Quantity maxims as enjoining such volubility, so construed the Quantity maxims are unreasonable norms for conversation. Appreciating this calls for attending more closely to the notion of what a conversation requires. When we do so, we see that eschewing an injunction to (...) maximal informativeness need not deprive us of any ability to predict or explain genuine cases of implicature. Crucial to this explanation is an appreciation of how what a conversation, or a given stage of a conversation, requires, depends upon what kind of conversation is taking place. I close with an outline of this dependence relation that distinguishes among three importantly distinct types of conversation. (shrink)

When discrepancies are discovered between the outcomes of different measurement procedures, two sorts of explanation are open to scientists. Either some of the outcomes are inaccurate or the procedures are not measuring the same quantity. I argue that, due to the possibility of systematic error, the choice between and is underdetermined in principle by any possible evidence. Consequently, foundationalist criteria of quantity individuation are either empty or circular. I propose a coherentist, model-based account of measurement that avoids the (...) underdetermination problem, and use this account to explain how scientists individuate quantities in practice. (shrink)

Consider the multi-user virtual worlds of online games such as EVE and World of Warcraft, or the multi-user virtual world of Second Life. Suppose a player performs an action in one of these worlds, via his or her virtual character, which would be wrong, if the virtual world were real. What is the moral status of this virtual action? In this paper I consider arguments for and against the Asymmetry Thesis: the thesis that such (...) class='Hi'>virtual actions are never wrong. I also explain how the truth of the Asymmetry Thesis is closely aligned with the possibility of what Edward Castronova has called closed synthetic worlds. With some qualifications, the ultimate conclusion is that the Asymmetry Thesis is false and that these closed worlds are impossible. (shrink)

'Explanation, Quantity and Law' is a sustained elaboration and defence of a theory of explanation, called the instance view, that is able to deal with the characteristic aspects of physical science, such as the use of mathematics, the fact that errors of measurement are ubiquitous, and so forth. The book begins with a summary of 'new directions' in the theory of explanation and continues with a systematic account of the view that to explain is to show that something is (...) an instance of a law of nature. This embraces topics such as the following - Salmon’s casual-mechanistic account and the ontic conception of explanation; theories of quantity from Ellis to Bigelow-Pargetter to quantum mechanics; Armstrong on numerical laws and laws of nature as relations between quantities; explanation and the quantum state. (shrink)

I reply to seven commentaries on “The Virtual and the Real”. In response to Claus Beisbart, Jesper Juul, Peter Ludlow, and Neil McDonnell and Nathan Wildman, I clarify and develop my view that virtual are digital objects, with special attention to the nature of digital objects and data structures. In response to Alyssa Ney and Eric Schwitzgebel, I clarify and defend my spatial functionalism, with special attention to the connections between space and consciousness. In response to Marc Silcox, (...) I clarify and develop my view of the value of virtual worlds, with special attention to the case where we experience these worlds as virtual. (shrink)

In Virtual Worlds, Benjamin Woolley examines the reality of virtual reality.

According to David Chalmers, the virtual entities found in Virtual Reality (VR) and Augmented Reality (AR) environments instantiate virtual properties of a specific kind. It has recently been objected that such a view (i) can’t extend to all types of properties; (ii) leads to a proliferation of property-types; (iii) implausibly ascribes massive errors to VR and AR users; and (iv) faces an analogue of Jackson’s “many-property problem”. My first objective here is to show that advocates of (...) class='Hi'>virtual properties can deal with each of these objections. The other goal of this paper is to examine the consequences of Chalmers’ theory in the particular case of AR. If we countenance virtual properties, AR highlights that non-virtual objects can possess both non-virtual and virtual properties. With AR, it also appears that a same non-virtual object can have different and even incompatible properties across augmented environments. Lastly, considering properties in light of AR highlights the risk of an “augmented solipsism”, and calls forth interesting questions about the persistence conditions of non-virtual objects in AR environments. (shrink)

There is widespread consensus that present patterns of consumption could lead to the permanent impossibility of maintaining those patterns and, perhaps, the existence of the human race. While many patterns of consumption qualify as ‘sustainable’ there is one in particular that deserves greater attention: virtual consumption. We argue that virtual consumption — the experience of authentic consumptive experiences replicated by alternative means — has the potential to reduce the deleterious consequences of real consumption by redirecting some consumptive behavior (...) from shifting material states to shifting information states. (shrink)