During the course of his lengthy career, Edward Schillebeeckx has developed a series of epistemological frameworks which inform his theology. Using the metaphor of “circle” to describe these frameworks, the article will argue that Schillebeeckx in his earlier theology describes experience and knowledge within the framework of an ontological circle of subject and object. In his later work, Schillebeeckx develops a second, hermeneutical circle and finally a critical circle of theory and praxis. Later developments in his thought both depend upon (...) and radically re-interpret the earlier circles of epistemology. Since all theological language and practice must originate within the boundaries of human knowledge and experience, only by this reinterpretation of epistemology, Schillebeeckx argues, can Christian theology begin to meet the challenge of the understanding of faith in the modern and postmodern world. (shrink)

This target article presents a critical survey of the scientific literature dealing with the speed/accuracy trade-offs in rapid-aimed movements. It highlights the numerous mathematical and theoretical interpretations that have been proposed in recent decades. Although the variety of points of view reflects the richness of the field and the high degree of interest that such basic phenomena attract in the understanding of human movements, it calls into question the ability of many models to explain the basic observations consistently reported (...) in the field. This target article summarizes the kinematic theory of rapid human movements, proposed recently by R. Plamondon (1993b; 1993c; 1995a; 1995b), and analyzes its predictions in the context of speed/accuracy trade-offs. Data from human movement literature are reanalyzed and reinterpreted in the context of the new theory. It is shown that the various aspects of speed/accuracy trade-offs can be taken into account by considering the asymptotic behavior of a large number of coupled linear systems, from which a delta-lognormal law can be derived to describe the velocity profile of an end-effector driven by a neuromuscular synergy. This law not only describes velocity profiles almost perfectly, it also predicts the kinematic properties of simple rapid movements and provides a consistent framework for the analysis of different types of speed/accuracy trade-offs using a quadratic (or power) law that emerges from the model. (shrink)

A standard way to challenge convergence-based accounts of inductive success is to claim that they are too weak to constrain inductive inferences in the short run. We respond to such a challenge by answering some questions raised by Juhl (1994). When it comes to predicting limiting relative frequencies in the framework of Reichenbach, we show that speed-optimal convergence—a long-run success condition—induces dynamic coherence in the short run.

There is a long history of the science of intelligent machines and its potential to provide scientific insights have been debated since the dawn of AI. In particular, there is renewed interest in the role of AI in research and research policy as an enabler of new methods, processes, management and evaluation which is still relatively under-explored. This empirical paper explores interviews with leading scholars on the potential impact of AI on research practice and culture through deductive, thematic analysis to (...) show the issues affecting academics and universities today. Our interviewees identify positive and negative consequences for research and researchers with respect to _collective_ and _individual use_. AI is perceived as helpful with respect to information gathering and other narrow tasks, and in support of impact and interdisciplinarity. However, using AI as a way of ‘speeding up—to keep up’ with bureaucratic and metricised processes, may proliferate negative aspects of academic culture in that the expansion of AI in research should assist and not replace human creativity. Research into the future role of AI in the research process needs to go further to address these challenges, and ask fundamental questions about how AI might assist in providing new tools able to question the values and principles driving institutions and research processes. We argue that to do this an explicit movement of meta-research on the role of AI in research should consider the effects for research and researcher creativity. Anticipatory approaches and engagement of diverse and critical voices at policy level and across disciplines should also be considered. (shrink)

With this book Paul Virilio inaugurated the new science whose object of study is the "dromocratic" revolution. Speed and Politics is the matrix of Virilio's entire work. Building on the works of Morand, Marinetti, and McLuhan, Virilio presents a vision more radically political than that of any of his French contemporaries: speed as the engine of destruction. Speed and Politics presents a topological account of the entire history of humanity, honing in on the technological advances made possible (...) through the militarization of society. Paralleling Heidegger's account of technology, Virilio's vision sees speed—not class or wealth—as the primary force shaping civilization. In this "technical vitalism," multiple projectiles—inert fortresses and bunkers, the "metabolic bodies" of soldiers, transport vessels, and now information and computer technology—are launched in a permanent assault on the world and on human nature. Written at a lightning-fast pace, Virilio's landmark book is a split-second, overwhelming look at how humanity's motivity has shaped the way we function today, and what might come of it. (shrink)

The production of complex sequences like music or speech requires the rapid and temporally precise production of events (e.g., notes and chords), often at fast rates. Memory retrieval in these circumstances may rely on the simultaneous activation of both the current event and the surrounding context (Lashley, 1951). We describe an extension to a model of incremental retrieval in sequence production (Palmer & Pfordresher, 2003) that incorporates this logic to predict overall error rates and speed—accuracy trade-offs, as well as (...) types of serial ordering errors. The model—assumes that retrieval of the current event is influenced by activations of surrounding events. Activations of surrounding events increase over time, such that both the accessibility of distant events and overall accuracy increases at slower production rates. The model's predictions were tested in an experiment in which pianists performed unfamiliar music at 8 different tempi. Model fits to speed—accuracy data and to serial ordering errors support model predictions. Parameter fits to individual data further suggest that working memory contributes to the retrieval of serial order and overall accuracy is influenced in addition by motor dexterity and domain-specific skill. (shrink)

Speed and Politics is the matrix of Virilio's entire work. Building on the works of Morand, Marinetti, and McLuhan, Virilio presents a vision more radically political than that of any of his French contemporaries: speed as the engine of destruction. Speed and Politics presents a topological account of the entire history of humanity, honing in on the technological advances made possible through the militarization of society. Paralleling Heidegger's account of technology, Virilio's vision sees speed--not class or (...) wealth--as the primary force shaping civilization. In this "technical vitalism," multiple projectiles--inert fortresses and bunkers, the "metabolic bodies" of soldiers, transport vessels, and now information and computer technology--are launched in a permanent assault on the world and on human nature. Written at a lightning-fast pace, Virilio's landmark book is a split-second, overwhelming look at how humanity's motivity has shaped the way we function today, and what might come of it. (shrink)

_A leading thinker asks why “faster” is synonymous with “better” in our hurried world and suggests how to take control of our runaway lives_ We live in an ever-accelerating world: faster computers, markets, food, fashion, product cycles, minds, bodies, kids, lives. When did everything start moving so fast? Why does speed seem so inevitable? Is faster always better? Drawing together developments in religion, philosophy, art, technology, fashion, and finance, Mark C. Taylor presents an original and rich account of a (...) great paradox of our times: how the very forces and technologies that were supposed to free us by saving time and labor now trap us in a race we can never win. The faster we go, the less time we have, and the more we try to catch up, the farther behind we fall. Connecting our speed-obsession with today’s global capitalism, he composes a grand narrative showing how commitments to economic growth and extreme competition, combined with accelerating technological innovation, have brought us close to disaster. Psychologically, environmentally, economically, and culturally, speed is taking a profound toll on our lives. By showing how the phenomenon of speed has emerged, Taylor offers us a chance to see our pace of life as the product of specific ideas, practices, and policies. It’s not inevitable or irreversible. He courageously and movingly invites us to imagine how we might patiently work towards a more deliberative life and sustainable world. (shrink)

The production of complex sequences like music or speech requires the rapid and temporally precise production of events (e.g., notes and chords), often at fast rates. Memory retrieval in these circumstances may rely on the simultaneous activation of both the current event and the surrounding context (Lashley, 1951). We describe an extension to a model of incremental retrieval in sequence production (Palmer & Pfordresher, 2003) that incorporates this logic to predict overall error rates and speed—accuracy trade-offs, as well as (...) types of serial ordering errors. The model—assumes that retrieval of the current event is influenced by activations of surrounding events. Activations of surrounding events increase over time, such that both the accessibility of distant events and overall accuracy increases at slower production rates. The model's predictions were tested in an experiment in which pianists performed unfamiliar music at 8 different tempi. Model fits to speed—accuracy data and to serial ordering errors support model predictions. Parameter fits to individual data further suggest that working memory contributes to the retrieval of serial order and overall accuracy is influenced in addition by motor dexterity and domain-specific skill. (shrink)

The ecological impact of alien species is a function of the area colonised. Impact assessments of alien species are thus incomplete unless they take the spatial component of invasion processes into account. This paper describes a measure, termed expansion speed, that quantifies the speed with which a species increases its spatial presence in an assessment area. It is based on the area of occupancy and can be estimated from grid occupancies. Expansion speed is defined as the yearly (...) increase in the radius of a coherent circle having the same area as the AOO, irrespective of whether the increase is due to natural dispersal or anthropogenic transport. Two methods for estimating expansion speed are presented: one that requires several years of spatio-temporal observation data and explicitly takes detection rates into account; and one that can be used under a situation with sparse data. Using simulations and real-world data from natural history collections, it is shown that the method provides a good fit to observational datasets. Expansion speed has several valuable properties. Being based on AOO, it is an intuitive measure; as it only requires occupancy data, it is comparatively easy to estimate; and because it is a quantitative and generic measure, it increases the testability and comparability of impact assessments of alien species. (shrink)

It is still perhaps not widely appreciated that in 1905 Einstein used his postulate concerning the ‘constancy’ of the light-speed in the ‘resting’ frame, in conjunction with the principle of relativity, to derive numerical light-speed invariance. Now a ‘weak’ version of the relativity principle (or, alternatively, appeal to the Michelson—Morley experiment) leads from Einstein's light postulate to a condition that we call universal light-speed constancy. which is weaker than light-speed invariance. It follows from earlier independent investigations (...) (Robertson [1949]; Steigler [1952]; Tzanakis and Kyritsis [1984]) that this condition is none the less sufficient to derive the Lorentz transformations up to a scale factor, given the well-known kinematic principle of ‘reciprocity’. In this paper, we follow Robertson and explore the kinematics consistent with universal light-speed constancy without imposing reciprocity, and we recover the Lorentz transformations by further appeal only to the weak relativity principle and spatial isotropy. (shrink)

Focused on the field of knowledge lying between digital and analog circuit theory, this new text will help engineers working with digital systems shorten their product development cycles and help fix their latest design problems. The scope of the material covered includes signal reflection, crosstalk, and noise problems which occur in high speed digital machines (above 10 megahertz). This volume will be of practical use to digital logic designers, staff and senior communications scientists, and all those interested in digital (...) design. (shrink)

In this study, we investigate the expression of speed—one of the principal dimensions of manner—in relation to the expression of space in Estonian, a satellite-framed and morphology-rich language. Our multivariate and extensive corpus analysis is informed by asymmetries attested in languages with regard to expressing space (thegoal-over-sourcebias) and speed (thefast-over-slowbias) where we attempt to explicitly link the two. We demonstrate moderate speed effects in the data in that fast motion verbs tend to combine with Goal, and slow (...) motion verbs with Location and Trajectory expressions, making verbs of fast motion similar to goal verbs in their clausal behaviour. We also show that semantic congruency (i.e., expressing semantic information repeatedly in motion clauses) overrides thegoal-over-sourcebias. That is, although verbs also occur in diverse patterns, they often combine with semantic units that mirror their meaning: goal verbs tend to combine with Goal, source verbs with Source, and manner verbs with Manner expressions. Such semantic congruency might serve as a tool for construal and, thus, is an important issue for future research. (shrink)

This paper examines several issues related to information, speed of computation, and simulation of a physical process. It is argued that mental processes proceed at a rate close to the optimal based on thermodynamic considerations. Problems related to the simulation of a quantum mechanical system on a computer are reviewed. Parallels are drawn between biological and adaptive quantum systems.

Everyone agrees that the world is accelerating. With advances in communication, transportation and information processing technologies, it is clear that the pace of events in global politics is speeding up at an alarming rate. The implications of this new speed however, continue to be a significant source of debate. Will acceleration lead to a more interconnected, productive, peaceful, and humane world; or a nightmarish descent into ecological devastation, economic exploitation and increasingly violent warfare? The Politics of Speed attempts (...) to map the contours of the new global space of speed, and investigates key issue areas âe" including democratic governance, warfare, capitalism, globalization and transnational activism âe" to uncover the ways in which acceleration is shaping the world. The book uses contemporary political theory (especially the works of Deleuze and Guattari) to develop an ontological account of speed, showing how its effects are frequently far more complex and surprising than we might expect. The result is an attempt to craft a way of engaging with global acceleration that might help avoid the dangers of speed, while embracing the possibilities it provides us with to produce a safer, more egalitarian, democratic and pluralistic world. (shrink)

Following aluminum as part of a material culture of speed and lightness, this article examines how assemblages of energy and metals connect built environments, ways of life, and ideologies of acceleration. Aluminum can be theorized as a circulatory matrix that forms an energy culture. Through a discussion of speed and social justice, the history of aluminium-based socioecologies reveals how the materiality of energy forms assemblages of objects, infrastructures, and practices. The article then traces the aluminum industry’s involvement in (...) the production and distribution of energy itself both at the national scale of power grids and in the emergence of transnational transfers of energy, such as hydropowered smelters in Iceland. Finally, this analysis of deeply embedded energy cultures calls for a transnational approach to the accelerated socioecologies of aluminum production and consumption; and for energy transition theories to pay closer attention to the figured worlds and figuring work of the military-industrial complex. (shrink)

Everywhere, life seems to be speeding up: we talk of “fast food” and “speed dating.” But what does the phenomenon of social acceleration really entail, and how new is it? While much has been written about our high-speed society in the popular media, serious academic analysis has lagged behind, and what literature there is comes more from Europe than from America. This collection of essays is a first step toward exposing readers on this side of the Atlantic to (...) the importance of this phenomenon and toward developing some preliminary conceptual categories for better understanding it. Among the major questions the volume addresses are these: Is acceleration occurring across all sectors of society and all dimensions of life, or is it affecting some more than others? Where is life not speeding up, and what results from this disparity? What are the fundamental causes of acceleration, as well as its consequences for everyday experience? How does it affect our political and legal institutions? How much speed can we tolerate? The volume tackles these questions in three sections. Part 1 offers a selection of astute early analyses of acceleration as experienced in the late nineteenth and early twentieth centuries. Part 2 samples recent attempts at analyzing social acceleration, including translations of the work of leading European thinkers. Part 3 explores acceleration’s political implications. (shrink)

If is often taken for granted that on a rotating disk it is possible to operate a global 3+1 splitting of spacetime such that both lengths and time intervals are uniquely defined in terms of measurements performed by real rods and real clocks at rest on the platform. This paper shows that this assumption, although widespread and apparently trivial, leads to an anisotropy of the velocity of two light beams traveling in opposite directions along the rim of the disk, which (...) in turn implies some recently pointed out paradoxical consequences undermining the self-consistency of the special theory of relativity (SRT). A correct application of the SRT solves the problem and recovers complete internal consistency for the theory. As an immediate consequence, it is shown that the Sagnac effect only depends on the nonhomogeneity of time of the platform and has nothing to do with any anisotropy of the speed of light along the rim of the disk, contrary to an incorrect but widely held idea. (shrink)

Urban sprawl and aggressive driving are two problems that afflict many of America’s major cities. The two affect Atlanta to a notoriously high degree. The two problems are connected. Aggressive driving is not so much a symptom of “road rage” as it is an attempt to communicate with slower drivers. The aggressive driver tailgates other drivers with the intention of letting them know that they are impeding the flow of faster traffic. Aggressive drivers are engaged in what “New Chicago School” (...) legal theory calls “norm seeding.” These drivers are trying to get others to conform to a different norm than what the posted speed limit dictates. The posted speed limit, which is the legal norm, reflects legislative judgments based on concerns of safety and fuel economy. The higher, informal, speed limit reflects something else: the impatience many drivers feel as they drive larger distances and spend correspondingly greater amounts of time in traffic. (shrink)

In the late 20th and early 21st centuries, increased computing power has made possible extraordinary leaps in film special effects. This article argues that special effects developed since the beginning of digital animation, when coupled with standard editing room techniques (jump cuts, cutaways), have brought us to an era where the eye cannot keep pace with on-screen events. It is arguable that video gamers are best equipped to handle the visual overload produced by action films' effects. The article enumerates a (...) series of techniques used in current action films to bring about visual excess that has an upsetting, exciting, overwhelming somatic effect on the viewer; these same effects are indispensable for the success of contemporary blockbuster action movies. Following theorist Paul Virilio's arguments, this article suggests that a machine ideology drives the perceptual system to dizzying limits, resulting in the “speed death of the eye.”. (shrink)

Hans Reichenbach made a bold and original attempt to ‘vindicate’ induction. He proposed a rule, the ‘straight rule’ of induction, which would guarantee inductive success if any rule of induction would. A central problem facing his attempt to vindicate the straight rule is that too many other rules are just as good as the straight rule if our only constraint on what counts as ‘success’ for an inductive rule is that it is ‘asymptotic’, i.e. that it converges in the limit (...) to the true limiting frequency (of some type of outcome O in a sequence of events) whenever such a limiting frequency exists. In this paper I consider the consequences of requiring speed-optimality of asymptotic methods, that is, requiring that inductive methods must get to the truth as quickly as possible. Two main results are proved: (1) the straight rule is speed-optimal; (2) there are (uncountably) many non-speed-optimal asymptotic methods. A further result gives a sufficient but not necessary condition for speed-optimality among asymptotic methods. Some consequences and open questions are then discussed. (shrink)

Notwithstanding its overwhelming descriptive power for existing data, it is not clear whether the kinematic theory of Plamondon & Alimi could generate new insights into biomechanical constraints and psychological processes underlying the way organisms trade off speed for accuracy. The kinematic model should elaborate on the role of neuromotor noise and on biomechanical strategies for reducing endpoint variability related to such noise.

Theories of decision-making and its neural substrates have long assumed the existence of two distinct and competing valuation systems, variously described as goal-directed vs. habitual, or, more recently and based on statistical arguments, as model-free vs. model-based reinforcement-learning. Though both have been shown to control choices, the cognitive abilities associated with these systems are under ongoing investigation. Here we examine the link to cognitive abilities, and find that individual differences in processing speed covary with a shift from model-free to (...) model-based choice control in the presence of above-average working memory function. This suggests shared cognitive and neural processes; provides a bridge between literatures on intelligence and valuation; and may guide the development of process models of different valuation components. Furthermore, it provides a rationale for individual differences in the tendency to deploy valuation systems, which may be important for understanding the manifold neuropsychiatric diseases associated with malfunctions of valuation. (shrink)

This article makes the case that speed has become significant, indeed central, as a social scientific category and focus of attention today. In particular, it engages with two contemporary theoretical currents that conceptualize the causes, consequences and manifestations of social speed as a fundamental feature of modernity. One key contribution is Hartmut Rosa’s interpretation of ‘social acceleration’, which is offered by him as part of a reinvigorated version of Critical Theory. Another is John Tomlinson’s (complementary but different) orientation, (...) focusing on variant cultural settings and implications of speed. By juxtaposing and assessing these two thematizations of speed/acceleration, with other recent treatments brought in at various points, the article underlines the need to clarify and debate these modal notions as a distinctive issue for social analysis. In addition, I bring out more explicitly the ambiguous nature of speed as a descriptive and normative concern. In this respect, while there can be no denying its negative-oppressive force – both structurally and experientially – it is also necessary to attend to the more positive-enabling aspects of ‘fast’ subjectivity. (shrink)

In this paper, we investigate the phenomenon ofspeed-upin the context of theories of truth. We focus on axiomatic theories of truth extending Peano arithmetic. We are particularly interested on whether conservative extensions of PA have speed-up and on how this relates to a deflationist account. We show that disquotational theories have no significant speed-up, in contrast to some compositional theories, and we briefly assess the philosophical implications of these results.

Two studies tested the hypothesis that certain positive emotions speed recovery from the cardiovascular sequelae of negative emotions. In Study 1, 60 subjects (Ss) viewed an initial fear-eliciting film, and were randomly assigned to view a secondary film that elicited: (a) contentment; (b) amusement; (c) neutrality; or (d) sadness. Compared to Ss who viewed the neutral and sad secondary films, those who viewed the positive films exhibited more rapid returns to pre-film levels of cardiovascular activation. In Study 2, 72 (...) Ss viewed a film known to elicit sadness. Fifty Ss spontaneously smiled at least once while viewing this film. Compared to Ss who did not smile, those who smiled exhibited more rapid returns to pre-film levels of cardiovascular activation. We discuss these findings in terms of emotion theory and possible health-promoting functions of positive emotions. (shrink)

Agents in a large population are randomly matched to play a certain game, payoffs in which represent fitness. Agents may have preferences that are different from fitness. They learn strategies according to their preferences, and evolution changes the preference distribution in the population according to fitness. When agents know the preferences of the opponent in a match, only efficient symmetric strategy profiles of the fitness game can be stable. When agents do not know the preferences of the opponent, only Nash (...) equilibria of the fitness game can be stable. For 2 × 2 symmetric games I characterize preferences that are stable. (shrink)

Recent accounts of the speed/accuracy relation for motor tasks have focused on the concept of motor output variability. We outline the advantages of this approach and the limitation of Plamondon's model in explaining movement error. We also examine and present complimentary data for rapid timing tasks. While these tasks do not meet the presented assumptions, the data still fit the model predictions.

Working speed as a latent variable reflects a respondent’s efficiency to apply a specific skill, or a piece of knowledge to solve a problem. In this study, the common assumption of many response time models is relaxed in which respondents work with a constant speed across all test items. It is more likely that respondents work with different speed levels across items, in specific when these items measure different dimensions of ability in a multidimensional test. Multiple (...) class='Hi'>speed factors are used to model the speed process by allowing speed to vary across different domains of ability. A joint model for multidimensional abilities and multifactor speed is proposed. Real response time data are analyzed with an exploratory factor analysis as an example to uncover the complex structure of working speed. The feasibility of the proposed model is examined using simulation data. An empirical example with responses and response times is presented to illustrate the proposed model’s applicability and rationality. (shrink)

1. The Physical Church-Turing Thesis. Physicists often interpret the Church-Turing Thesis as saying something about the scope and limitations of physical computing machines. Although this was not the intention of Church or Turing, the Physical Church Turing thesis is interesting in its own right. Consider, for example, Wolfram’s formulation: One can expect in fact that universal computers are as powerful in their computational capabilities as any physically realizable system can be, that they can simulate any physical system . . . (...) No physically implementable procedure could then shortcut a computationally irreducible process. (Wolfram 1985) Wolfram’s thesis consists of two parts: (a) Any physical system can be simulated (to any degree of approximation) by a universal Turing machine (b) Complexity bounds on Turing machine simulations have physical significance. For example, suppose that the computation of the minimum energy of some system of n particles takes at least exponentially (in n) many steps. Then the relaxation time of the actual physical system to its minimum energy state will also take exponential time. (shrink)

The time course of different metacognitive experiences of knowledge was investigated using artificial grammar learning. Experiment 1 revealed that when participants are aware of the basis of their judgments decisions are made most rapidly, followed by decisions made with conscious judgment but without conscious knowledge of underlying structure , and guess responses were made most slowly, even when controlling for differences in confidence and accuracy. In experiment 2, short response deadlines decreased the accuracy of unconscious but not conscious structural knowledge. (...) Conversely, the deadline decreased the proportion of conscious structural knowledge in favour of guessing. Unconscious structural knowledge can be applied rapidly but becomes more reliable with additional metacognitive processing time whereas conscious structural knowledge is an all-or-nothing response that cannot always be applied rapidly. These dissociations corroborate quite separate theories of recognition and metacognition. (shrink)