This paper aims at tracking down, by looking at late medieval and early modern discussions over the ontological status of artifacts, the main steps of the process through which nature became theorized on a mechanistic model in the early 17th century. The adopted methodology consists in examining how inventions such as mechanical clocks and automata forced philosophers to modify traditional criteria based on an intrinsic principle of motion and rest for defining natural beings. The paper studies different strategies (...) designed in the transitional period 1300–1600 for making these inventions compatible with classical definitions of nature and artifacts. In the first part of the paper, it is shown that, even if virtually all medieval philosophers acknowledged an ontological distinction between artifacts and natural beings, these different strategies demonstrate a growing concern about the consistency of the art/nature distinction. The next part of the paper studies how mechanical clocks, even before the Scientific Revolution, served as theoretical models for applying mechanistic views to different objects (be they cosmological, physical or biological). The epistemological function of clocks appears to stem from different factors (like the specific manufacturing of late medieval clocks as well as the evolution of 16th-century mechanics) that are listed in this second part of the paper. These factors, combined with the definitional issues raised by automata, explain that clocks became the symbol of a new approach to natural philosophy, characterized by the collapse of the art/nature distinction and the “mechanization of nature”. (shrink)

When addressing the notion of proper time in the theory of relativity, it is usually taken for granted that the time read by an accelerated clock is given by the Minkowski proper time. However, there are authors like Harvey Brown that consider necessary an extra assumption to arrive at this result, the so-called clock hypothesis. In opposition to Brown, Richard TW Arthur takes the clock hypothesis to be already implicit in the theory. In this paper I will present a view (...) different from these authors by taking into account Einstein’s notion of natural clock and showing its relevance to the debate. (shrink)

Across a wide range of cultural forms, including philosophy, cultural theory, literature and art, the figure of the clock has drawn suspicion, censure and outright hostility. In contrast, even while maps have been shown to be complicit with forms of domination, they are also widely recognised as tools that can be critically reworked in the service of more liberatory ends. This paper seeks to counteract the tendency to see clocks in this way, arguing that they have many more interesting (...) possibilities than they are usually given credit for. An analysis of approaches to clocks in continental philosophy critiques the way they have too often been dismissed as unworthy of further analysis, and argues that this dismissal is based upon an inadequate understanding of how clocks operate. Seeking to move towards more critical and curious approaches, the paper draws inspiration from critical cartography in order to call for the development of a ‘critical horology’ which would emphasise both the fundamentally political nature of clocks, and the potential for designing them otherwise. A discussion of temporal design provides a range of examples of how clocks might open up new horizons within the politics of time. (shrink)

Sound propagation within certain non-relativistic condensed matter models obeys a relativistic wave equation despite such systems admitting entirely non-relativistic descriptions. A natural question that arises upon consideration of this is, “do devices exist that will experience the relativity in these systems?” We describe a thought experiment in which ‘acoustic observers’ possess devices called sound clocks that can be connected to form chains. Careful investigation shows that appropriately constructed chains of stationary and moving sound clocks are perceived by (...) observers on the other chain as undergoing the relativistic phenomena of length contraction and time dilation by the Lorentz factor, \, with \ the speed of sound. Sound clocks within moving chains actually tick less frequently than stationary ones and must be separated by a shorter distance than when stationary to satisfy simultaneity conditions. Stationary sound clocks appear to be length contracted and time dilated to moving observers due to their misunderstanding of their own state of motion with respect to the laboratory. Observers restricted to using sound clocks describe a universe kinematically consistent with the theory of special relativity, despite the preferred frame of their universe in the laboratory. Such devices show promise in further probing analogue relativity models, for example in investigating phenomena that require careful consideration of the proper time elapsed for observers. (shrink)

Scientists, both modern and contemporary, commonly try to discern patterns in nature. They also frequently use arguments by analogy to construct an understanding of the natural mechanisms responsible for producing such patterns. For Robert Boyle, the famous clock at Strasbourg provided a perfect paradigm for understanding the connection between these two scientific activities. Unfortunately, it also posed a serious threat to his realistic pretensions. All sorts of internal mechanisms could produce precisely the same movements across the face of a (...) clock. Given God's immense creative capacities, Boyle realized that standard epistemological constraints could never ensure, not even to the least degree of probability, that scientific theories about the unobservable mechanisms of nature were descriptively accurate. Like most moderns, he fortified his epistemology theologically in order to retain his realistic stance. John Locke, however, took counsel from Ecclesiastes to repudiate Boyle's realism, while Samuel Clarke mobilized biblical images to dismiss the clockwork paradigm altogether.A contemporary review of this modern controversy reveals that there is still much to learn from the clock at Strasbourg. Among other things, the realism/antirealism issue is of central importance to understanding today's science, Nancey Murphy's protests notwithstanding. Moreover, the kind of realistic stance that is essential, not only to the truth but to the very intelligibility of certain types of scientific explanation, demands more than the critical realism of Ian Barbour. To be taken seriously, the models used in such contexts must be taken literally. (shrink)

It is the prevailing paradigm in contemporary physics to model the dynamical evolution of physical systems in terms of a real parameter conventionally denoted as 't' ('little tee'). We typically call such dynamical models laws of nature' and t we call 'physical time'. It is common in the philosophy of time to regard t as time itself, and to take the global structure of general relativity as the ultimate guide to physical time, and so consequently the true nature of time. (...) In this paper we defend the idea that physical time, t, is rather better defined as an operational modelling parameter: we measure relations between changing physical quantities using bespoke physical systems---i.e. clocks---that coordinate local coincidences. We argue that the sorts of physical systems that make good clocks---what we call precision clocks---are those that exhibit self-sustained oscillations known as limit cycles, which are ubiquitous in open, driven, stable, dissipative systems. We develop the physical and philosophical ramifications of this conception of physical time, particularly the notion that physical time does not track something 'out there' in the world. As a result, we speculate that physical time is perhaps not as different from manifest time as many philosophers of time (and apparently general relativity) seem to suggest. (shrink)

In her articles on the clock paradox and the relativity of time Luise Lange (1891–1978) defends the theory of relativity against philosophical refutations, by showing that the apparent clock paradox is not a paradox, but merely conflicts with common sense and is based on a misunderstanding of the theory. The following study explores, contextualizes and analyzes Lange’s clear and sophisticated contribution to the debate on the clock paradox for the first time.

A core principle of modern science holds that a scientific explanation must not attribute will or agency to natural phenomena.The Restless Clock examines the origins and history of this, in particular as it applies to the science of living things. This is also the story of a tradition of radicals—dissenters who embraced the opposite view, that agency is an essential and ineradicable part of nature. Beginning with the church and courtly automata of early modern Europe, Jessica Riskin guides us (...) through our thinking about the extent to which animals might be understood as mere machines. We encounter fantastic robots and cyborgs as well as a cast of scientific and philosophical luminaries, including Descartes and Leibnitz, Lamarck and Darwin, whose ideas gain new relevance in Riskin's hands. The book ends with a riveting discussion of how the dialectic continues in genetics, epigenetics, and evolutionary biology, where work continues to naturalize different forms of agency.The Restless Clock reveals the deeply buried roots of current debates in artificial intelligence, cognitive science, and evolutionary biology. (shrink)

Over the last few decades there have been several calls for a “big picture” of the history of science. There is a general need for a concise overview of the rise of modern science, with a clear structure allowing for a rough division into periods. This essay proposes such a scheme, one that is both elementary and comprehensive. It focuses on four machines, which can be seen to have mediated between science and society during successive periods of time: the clock, (...) the balance, the steam engine, and the computer. Following an extended developmental phase, each of these machines came to play a highly visible role in Western societies, both socially and economically. Each of these machines, moreover, was used as a powerful resource for the understanding of both inorganic and organic nature. More specifically, their metaphorical use helped to construe and refine some key concepts that would play a prominent role in such understanding. In each case the key concept would at some point be considered to represent the ultimate building block of reality. Finally, in a refined form, each of these machines would eventually make its entry in scientific research, thereby strengthening the ties between these machines and nature. (shrink)

In her articles on the clock paradox and the relativity of time Luise Lange defends the theory of relativity against philosophical refutations, by showing that the apparent clock paradox is not a paradox, but merely conflicts with common sense and is based on a misunderstanding of the theory. The following study explores, contextualizes and analyzes Lange’s clear and sophisticated contribution to the debate on the clock paradox for the first time.

In this dissertation I examine how the English philosopher-theologian Samuel Clarke (1675--1729) attempted to reasonableness of Christianity and its compatibility with the new natural philosophy. In reaction to what he perceived as the problematic excesses of mechanical philosophy, with its looming threat of atheism, Clarke developed a series of arguments against atheism which aimed to show the shortcomings of a purely material or mechanical explanation of the universe, and demonstrate the overall `reasonability' of the Christian religion. Clarke aimed to (...) demonstrate the `reasonableness' of Christianity by turning the `mathematical' style of reasoning of the mechanical philosophy against his atheist adversaries. Clarke's writings offer us a valuable case-study for the complex interplay of philosophy, science and religion in England at the start of the eighteenth century, and the impact of mechanical philosophy on natural theology. This dissertation aims to improve our understanding of Clarke's philosophy through careful examination of its principal components: The active role of God in the world, the perfection of God's plan, the existence of immaterial substances and powers, and the subsequent reasonability of the Christian religion. Taken together, the four chapters show Clarke's solutions to the atheist threats, and provide a coherent picture of Clarke's ideas about the nature of God and God's role in the world. (shrink)

Although the basis of modern biology is Cartesian, Descartes’s theories of biology have been more often ridiculed than studied. Yet, Dennis Des Chene demonstrates, the themes, arguments, and vocabulary of his mechanistic biology pervade the writings of many seventeenth-century authors. In his illuminating account of Cartesian physiology in its historical context, Des Chene focuses on the philosopher’s innovative reworking of that field, including the nature of life, the problem of generation, and the concepts of health and illness. Des Chene begins (...) by surveying works that Descartes would likely have encountered, from late Aristotelian theories of the soul to medical literature and treatises on machines. The Cartesian theory of vital operations is examined, with particular attention to the generation of animals. Des Chene also considers the role of the machine-model in furnishing a method in physiology, the ambiguities of the notion of machine, and of Descartes’s problem of simulation. Finally, he looks at,the various kinds of unity of the body, both in itself and in its union with the soul. Spirits and Clocks continues Des Chene’s highly regarded exploration -- begun in his previous book, Life’s Form -- of the scholastic and Cartesian sciences as well as the dialogue between these two worldviews. Introduction 1 Part One - Tales of the Bête-Machine [ 1 ] - Self-Movers 13 [ 2 ] - Where Do Machines Come From? 32 [ 3 ] - The Uses of Usus 53 Part Two - Machines, Mechanisms, Bodies, Organs [ 4 ] - Tools of Knowledge 71 [ 5 ] - Jeux D’Artifice 103 [ 6 ] - Unity of the Body 116 Conclusion 153 Bibliography 159 Index 177. (shrink)

The purpose of this article is to show that the truthmaker solution to the Gettier counter-examples can solve the Russell case of the stopped clock (other standard cases have already been analysed). The solution amounts to this: the truthmaker for the claim that it is, say, 2.00 pm, is a combination of natural and non-natural determinants. The latter are created by stipulation, but having been so made make it is a perfectly objective matter as to whether it is (...) 2.00 o'clock. To know that it is 2.00 pm is to have the evidence for one's belief evidence of the very state of affairs that make the belief true. Thus, in the Russell case one does not have knowledge, in accord with intuition. (shrink)

I look at the ‘flavour-oscillation clocks’ proposed by D. V. Ahluwalia and two of his arguments suggesting that such clocks might behave in a way that threatens the geometricity of general relativity (GR). The first argument states that the behaviour of these clocks in the vicinity of a rotating gravitational source implies a non-geometrical element of gravity. I argue that the phenomenon is best seen as an instance of violation of the ‘clock hypothesis’ and therefore does not (...) threaten the geometrical nature of gravitation. Ahluwalia’s second argument, for the ‘incompleteness’ of general relativity, involves the idea that flavour-oscillation clocks can detect constant gravitational potentials. I argue that the purported ‘incompleteness-establishing’ result is in fact one that applies to all clocks. It is entirely derivable from general relativity, does not result in the observability of the potential, and is not at odds with any of general relativity’s foundations. (shrink)

With Spirits and Clocks, Dennis Des Chene completes a two-part project begun with Life’s Form: Late Aristotelian Conceptions of the Soul. In both volumes, Des Chene is concerned with the question of what makes living things living. For the Jesuit Aristotelians, the answer requires a complex analysis of the ontology of soul and power. For Descartes, of course, the answer is completely different; arguably, there is a sense in which his answer is: nothing. Indeed Des Chene does argue this, (...) concluding that for Descartes there are no living things in the Aristotelian sense: the body machine does not live, because it has no powers; the soul does not live because it has no role in nutrition, growth, and generation. Descartes’s physiology thus represents the most radical aspect of his natural philosophy, for he must eliminate souls from living things as part of the general project of eliminating Aristotelian forms from nature. As such, the importance of Descartes’s physiology is manifest; Des Chene’s study is a very welcome and original addition to the still-modest philosophical literature engaged with Descartes’sL’Homme and La description du corps humain. (shrink)

General Relativity’s Schwarzschild solution describes a spherically symmetric gravitational field as an utterly static thing. The Space Generation Model describes it as an absolutely moving thing. The light propagation time-delay experiment of Shapiro-Reasenberg [1] and the falling atomic clock experiment of Vessot-Levine [2] provide the ideal context for illustrating how, though the respective world views implied by these models are radically di fferent, they make nearly the same prediction for the results of these experiments.

In lieu of an abstract, here is a brief excerpt of the content:Leibniz and the Two ClocksDavid ScottAnyone familiar with Leibniz’s philosophy in general and with his critique of occasionalism in particular is likely familiar with his example of two clocks. Generally speaking, the example illustrates a range of hypotheses that, according to Leibniz, might possibly explain the connections between substances in the world. The most important of these hypotheses are Leibniz’s own doctrine of the preestablished harmony and the (...) occasionalist—for present purposes, Malebranche’s—doctrine of causation. In Leibniz’s mind at least, the two clocks example (so-called because substances are represented by two clocks) illustrates the superiority of the hypothesis of the preestablished harmony over occasionalism. Whether the example in fact succeeds in this regard is the primary question of this paper.Given the times, Leibniz’s choice of example is understandable. A clock is ideally suited to represent a mechanism, of course; and in view of the general “mechanization of the world view” of that time, the example seems to have been in the air.1 Spring-driven clocks had appeared at the outset of the sixteenth century, and the kind of clock Leibniz seems to have in mind in his example, namely, one driven by a pendulum, was the invention, in about 1656, of Christian Huygens, who was a significant influence on Leibniz. Huygens’s invention in fact provided the impetus for a broadening of the importance and extent of horology.2Although Leibniz’s choice of example was understandable, it was not a happy one, and the general importunity of his use of this example was [End Page 445] recognized by both his contemporary critics and his subsequent commentators.3 In fact his choice of the example becomes almost ironic when it is recalled that Geulincx, who is most commonly associated with the example, was an occasionalist. The operations of two clocks, between which there is a constant and fixed relation, say, of keeping the same time, cannot normally be said to be “related.” The example is more intuitively taken to indicate the random, accidental, unnecessary, and unconnected nature of the otherwise constant and regular relation between the clocks; and so one would think the example more suited to an occasionalist’s position than to that of Leibniz.In what follows I aim to judge the effectiveness—in Leibniz’s own terms—of the two clocks example. In gauging the effectiveness of Leibniz’s use of the example, I expect that a few things can be learned about Leibniz’s system in general and about his critique of occasionalism in particular. My procedure will be to examine separately what I take to be four significant occasions in which Leibniz compares things or substances in the world and clocks. The passages in question date from a period spanning ten years, and in each instance the example is put to service in Leibniz’s attempt to better occasionalism.Beyond this, although the comparison is employed or appraised in slightly different ways each time, the uses to which it is put are basically two. In the first two instances examined below, it is employed primarily to distinguish the preestablished harmony from occasionalism. I will be arguing that, to the extent that it fails to illustrate his point, Leibniz fails adequately to distinguish these two doctrines. This was Arnauld’s criticism.4 In the third and fourth instances, however, the example is employed solely to illustrate certain features of the preestablished harmony. On my analysis, it does not appear to fulfill this role either. [End Page 446]First Use of the ExampleOne of the more well known statements of the two clocks example is from an explanation Leibniz gives to Basnage de Beauval in 1696 of his “New System” (1695):Imagine two clocks or watches which are in perfect agreement. Now this can happen in three ways. The first is that of a natural influence.... The second way of making two clocks, even poor ones, agree is always to assign a skilled craftsman to them who adjusts them and constantly sets them in agreement. The third way is to construct these two timepieces at the beginning with such skill and accuracy that one can... (shrink)

The use of real clocks and measuring rods in quantum mechanics implies a natural loss of unitarity in the description of the theory. We briefly review this point and then discuss the implications it has for the measurement problem in quantum mechanics. The intrinsic loss of coherence allows to circumvent some of the usual objections to the measurement process as due to environmental decoherence.

Our daily experience, dominated by the corporate clock that so many of us contort ourselves to fit inside, is destroying us. It wasn't built for people, it was built for profit. This is a book that tears open the seams of reality as we know it-the way we experience time itself-and rearranges it, reimagining a world not centered around work, the office clock, or the profit motive. Explaining how we got to the point where time became money, Odell offers us (...) new models to live by--inspired by pre-industrial cultures, ecological, and geological time--that make a more humane, more hopeful way of living seem possible. In this dazzling, subversive, and deeply hopeful reframing of time, Jenny Odell takes us on a journey through other temporal habitats. As planet-bound animals, we live inside shortening and lengthening days, alongside gardens growing, birds migrating, and cliffs eroding. The stretchy quality of waiting and desire, the way the present may suddenly feel marbled with childhood memory, the slow but sure procession of a pregnancy, or the time it takes to heal from injuries--physical or emotional. Odell urges us to become stewards of these different rhythms of life, to imagine a life, identity, and source of meaning outside of the world of work and profit, and to understand that the trajectory of our lives--or the life of the planet--is not a foregone conclusion. In that sense, "saving" time-recovering its fundamentally irreducible and inventive nature-could also mean that time saves us. (shrink)

A vast network of cellular circadian clocks regulates 24‐hour rhythms of behavior and physiology in mammals. Complex environments are characterized by multiple, and often conflicting time signals demanding flexible mechanisms of adaptation of endogenous rhythms to external time. Traditionally this process of circadian entrainment has been conceptualized in a hierarchical scheme with a light‐reset master pacemaker residing in the hypothalamus that subsequently aligns subordinate peripheral clocks with each other and with external time. Here we review new experiments using (...) conditional mouse genetics suggesting that resetting of the circadian system occurs in a more “federated” and tissue‐specific fashion, which allows for increased noise resistance and plasticity of circadian timekeeping under natural conditions. (shrink)

This paper offers a detailed account of arguments in De Caelo I by which Aristotle tried to demonstrate the necessity of the perpetual existence and the perpetual rotation of the cosmos. On our interpretation, Aristotle’s arguments are naturalistic. Instead of being based (as many have thought) on rules of logic and language, they depend, we argue, on natural science theories about abilities (δυνάμεις), e.g., to move and to change, which things have by nature and about the conditions under which (...) these abilities can be exercised. Our interpretation locates the De Caelo arguments in the context of some central doctrines of the Organon, the Metaphysics, the Physics, and other texts. The De Caelo arguments fit a number of views developed in these texts. Aristotle’s treatments of local motion, of natural motion and change, of necessity and possibility, and of abilities and their exercises are examples. But, as we interpret them, the De Caelo arguments raise serious questions about the role of (and the need for) Metaphysics A’s soulful Unmoved Mover in Aristotle’s overall natural-scientific picture. (shrink)

This paper offers a detailed account of arguments in De Caelo I by which Aristotle tried to demonstrate the necessity of the perpetual existence and the perpetual rotation of the cosmos. On our interpretation, Aristotle’s arguments are naturalistic. Instead of being based (as many have thought) on rules of logic and language, they depend, we argue, on natural science theories about abilities (δυνάμεις), e.g., to move and to change, which things have by nature and about the conditions under which (...) these abilities can be exercised. Our interpretation locates the De Caelo arguments in the context of some central doctrines of the Organon, the Metaphysics, the Physics, and other texts. The De Caelo arguments fit a number of views developed in these texts. Aristotle’s treatments of local motion, of natural motion and change, of necessity and possibility, and of abilities and their exercises are examples. But, as we interpret them, the De Caelo arguments raise serious questions about the role of (and the need for) Metaphysics A’s soulful Unmoved Mover in Aristotle’s overall natural-scientific picture. (shrink)

This paper offers a detailed account of arguments in De Caelo I by which Aristotle tried to demonstrate the necessity of the perpetual existence and the perpetual rotation of the cosmos. On our interpretation, Aristotle’s arguments are naturalistic. Instead of being based (as many have thought) on rules of logic and language, they depend, we argue, on natural science theories about abilities (δυνάμεις), e.g., to move and to change, which things have by nature and about the conditions under which (...) these abilities can be exercised. Our interpretation locates the De Caelo arguments in the context of some central doctrines of the Organon, the Metaphysics, the Physics, and other texts. The De Caelo arguments fit a number of views developed in these texts. Aristotle’s treatments of local motion, of natural motion and change, of necessity and possibility, and of abilities and their exercises are examples. But, as we interpret them, the De Caelo arguments raise serious questions about the role of (and the need for) Metaphysics A’s soulful Unmoved Mover in Aristotle’s overall natural-scientific picture. (shrink)

Examining the effectiveness of the Kant’s Refutation of Idealism as a critique of a Cartesian account of consciousness, I argue that Kant's reasoning turns on the insight that self-knowledge presupposes independent temporal determination of the self. This insight bears an intriguing resemblance to claims about meaning and justification that appear in Wittgenstein's later work. Much as Wittgenstein rules out the possibility of a private language, whose meanings derive from acts of inner ostensive definition, on the ground that language requires an (...) independent standard of meaning, so Kant shows that there must be objects in space and time outside me because they constitute the only independent standard of temporality, relative to which I can be conscious of my own existence as determined in time. But Kant only partially anticipates Wittgenstein because the former does not fully appreciate the linguistic nature of judgment. (shrink)

Cryopreservation of human embryos remains, in many jurisdictions, a critical component of the use of the technology of in vitro fertilisation in assisted reproduction. However, although the reasons for the freezing of reproductive material—such as cost effectiveness and reducing risks of IVF—are a constant across jurisdictions, the desirable length of storage remains subject to ongoing regulatory debate. Internationally embryo storage limits are variable. This article features data from a recent Australian research project which explores individual attitudes, desires and understandings of (...) law of IVF patients who had or who have embryos in storage. This article uses interviews from the study to argue that storage limits, like any apparently neutral regulatory tool, apply unequally causing unintended physical, mental and emotional harm—particularly to women. This analysis of storage limits exposes the interaction of time, science and law to create, apply and enforce norms and practices of ‘natural’ embryo storage, suggesting that the imposition of inflexible legislative restrictions upon embryo storage are socially contingent and value laden rather than ‘natural’ or ‘scientific’. This outcome has relevance to wider debates over assisted reproduction policies, suggesting that legal frameworks should adopt more flexibility in application to the patients who use this technology. (shrink)

This article explores a perplexing line from Rousseau's Emile: his suggestion that the ‘most important rule’ for the educator is ‘not to gain time but to lose it’. An analysis of what Rousseau meant by this line, the article argues, shows that Rousseau provides the philosophical groundwork for a radical critique of the contemporary cultural framework that supports homework, standardised testing, and the competitive extracurricular activities that consume children's time. He offers important insights to contemporary parents and educators wishing to (...) reimagine an educational system that is currently fuelled more by familial and international amour propre than by children's interests and needs. Not the least of these is his recognition that to reimagine children's education would require a new configuration of the very terms of modern life. Problematically, however, Rousseau's alternative to mechanised clock-time depends on the labour of Sophie, whose time is also reconfigured. For the next generation of children to be educated according to natural time, Sophie's labour needs to be off the clock too, which is just as much a linchpin of her removal from the public sphere of citizenship and the paid workforce as it is of Emile's education for public life, or so the final section of this paper argues. (shrink)

Spirits and Clocks is the third in a series of magnificent books in which Dennis Des Chene explores the relationship between late Scholastic philosophy and Cartesian thought. The other two books are Physiologia: Natural Philosophy in Late Aristotelian and Cartesian Thought and Life's Form: Late Aristotelian Conceptions of the Soul . Together, these three books situate Descartes's thinking in one important aspect of the intellectual context within which it developed. The result is a superbly nuanced study of a (...) thinker whose brilliance has often dazzled his modern commentators so much that they have forgotten he was addressing a philosophical tradition out of which many of his own concepts and arguments derived.In the present book Des Chene considers Descartes's physiological ideas, as presented in Traité de l'homme. He argues that Descartes's “rejection of the vegetative and sensitive souls invented by his predecessors was no less momentous for the science of life than the rejection of forms, powers, and ends was for physics. It was of a piece with his program in physics, executed with the same motives and resting on the same principles” . Spirits and Clocks is a careful, historically informed conceptual analysis of Descartes's notorious doctrine of the bête machine. Considering this idea in context highlights both the traditional and innovative features of Descartes's physiological thought. This book makes a significant contribution to the historiography of early modern natural philosophy by demonstrating both the continuities and discontinuities between the mechanical philosophy and Aristotelian natural philosophy.In the individual chapters Des Chene examines a few detailed examples of physiological questions that he considers particularly significant. These include the explanation of self‐motion, where machines come from, and the role of functional and teleological ideas in Descartes's physiology. Other important topics include sensation and perception, intentionality, and the unity of the body. In examining each of these issues, Des Chene first describes the explanations favored by sixteenth‐ and seventeenth‐century Scholastic philosophers. He then provides a detailed analysis of Descartes's position and shows the precise differences and similarities between Descartes's thought and that of his contemporary Aristotelians. Both aspects of his discussion enrich our historical understanding. Des Chene is one of only a handful of scholars who have given serious attention to late Aristotelian natural philosophy in recent years, and his account in Spirits and Clocks is both informative and useful. Similarly, Traité de l'homme has received less scholarly attention than the Discourse on Method and the Meditations, so the present study is a welcome addition to the literature.Des Chene deploys an impressive array of scholarly skills and knowledge of Descartes's intellectual context as well as analytic precision. The result is an important and original reading of an aspect of Cartesianism that has not received as much attention as Descartes's physics, metaphysics, and epistemology. This book not only illuminates Descartes's theories but also delineates the conceptual commitments of the mechanical philosophy and the details of its differences from the late Scholasticism that it replaced. It serves as an excellent model for a contextualized history of early modern natural philosophy. (shrink)

We introduce a new way of defining metric temporal logic on a real-numbers flow of time. The idea is based on having semantics which allow us to refer to a single universal clock of arbitrary precision in order to impose metric constraints. This gives us a new metric temporal logic which is very expressive, is natural to use, can be applied in very general situations, affords a wide range of useful abbreviations and operators, has a PSPACE decision procedure, and (...) has the promise of being amenable to standard reasoning techniques. Thus it has many advantages over the existing metric temporal logics. We provide a decision procedure via conversion to a non-metric temporal logic, hence doing metric reasoning with no clocks. (shrink)

Augustine’s analysis of time in Book XI of Confessions represents for Ludwig Wittgenstein a good example of a philosophical question. In dealing with such theme, his thought undergoes relevant changes. In the Philosophical Remarks, written more than 10 years after the drafting of the Tractatus, the Austrian philosopher holds that the essence of the world can be expressed in the grammar of language. Philosophy as “custodian” of grammar can grasp the essence of the world by excluding nonsensical combinations of signs. (...) Philosopher, however, are often “tempted” to straightly describe the nature of the world, producing logical-grammatical paradoxes. An example of such a temptation is offered by the attempt to take hold of the essence of time using propositions like “only the present experience has reality.” The logical mistake hidden in this proposition lies in the bad use of the adjectival word “present” that would lose its everyday use and functional role in the language. Only comparing the term “present” with the background of other words referring to time experiences like “past,” “future,” and so on, we are able to understand the true sense of it. Engaging in a grammatical investigation into the notion of time helps us to dispel the different uses of it staving off logical muddles. Wittgenstein makes, in his lecture held at Cambridge in 1932–1933, a relevant distinction between what he calls “memory-time” and “information-time.” If the first can be understood as a now-centered system mostly expressed by indexical sentences or as an arrangement relied on memory, and therefore inadequate to give any external physical criteria for time measurements, the second clearly refers to a public chronology, implemented by clocks, calendars, diaries, and so on. Grammatical misconceptions, however occur when we are “tyrannized” by a metaphor and not able to “move outside of” it. The Austrian philosopher makes no secret of preferring a characterization of time that rejects a truth-functional interpretation. As for the notion of “game” in the Philosophical Investigations, it is impossible to have something like a common denominator shared by every sentence involving time. (shrink)

Most organisms display oscillations of approximately 24 hours in their physiology. In higher organisms, these circadian oscillations in biochemical and physiological processes ultimately control complex behavioral rhythms that allow an organism to thrive in its natural habitat. Daily and seasonal light cycles are mainly responsible for keeping the circadian system properly aligned with the environment. The molecular mechanisms responsible for the control of the circadian clock have been explored in a number of systems. Interestingly, the circadian oscillations that are (...) responsive to environmental stimuli are present very early during development. This review focuses on the advantages of using the zebrafish to study the development of the vertebrate circadian system and light‐dependent signaling to the clock. BioEssays 24:419–426, 2002. © 2002 Wiley Periodicals, Inc. (shrink)

Positing representations and operations on them as a way of explaining behavior was one of the major innovations of the cognitive revolution. Neuroscience and biology more generally also employ representations in explaining how organisms function and coordinate their behavior with the world around them. In discussions of the nature of representation, theorists commonly differentiate between the vehicles of representation and their content—what they denote. Many contentious debates in cognitive science, such as those pitting neural network models against symbol processing accounts, (...) have focused on the types of vehicles proposed for mental representation and whether they have the appropriate structure to succeed in bearing their contents. Philosophers, in contrast, have focused their debates on content and the particular way in which vehicles might bear content—that is, the process of representing rather than the format of representations. I will offer a novel answer to the question of how it is that a representation has content by focusing on the architecture of representation. My proposal is that representations occur in a particular type of mechanism—one in which a control system regulates a plant—and that we can gain traction on cognitive systems of representation by considering how this works in physical systems more generally. (shrink)

The topic to be addressed in this paper, that is, the distinction between the “concept” of time and the being of the clock, divides into two parts: first, in the debate between Albert Einstein and Henri Bergson, one discovers the ground for the diverging concepts of time characterized by physics in its opposing itself to philosophy. Bergson’s durée or “duration” in opposition to Einstein’s ‘physicist’s time’ as ‘public time,’ one can argue, sets the terms for Martin Heidegger’s extending, his ontological (...) analysis of Da-sein, as human being-in-the-world. Second, in this the ‘concept of time’ gives way to the analysis of the ‘being of the clock.’ What is this being of the clock that makes evident the fundamental temporality of Da-sein? This question is rehearsed in Division Two of Being and Time. My claim is that the fundamental insight into the nature of time revealed by the encounter between Bergson and Einstein is that time extemporizes itself. Temporality “is” not a being but a process that temporalizes itself, precisely because it “is not.”. (shrink)

Previous research has reported that ethical values of business students are lower than those of their peers in other majors. The purpose of this study was to investigate whether a self-selection bias with respect to ethical values exists among students enrolled as business majors when compared with students planning to enter the engineering profession. Engineering students are exposed to a similar technical orientation in academic curricula and also supply the market for managers.A survey instrument was administered to 195 students enrolled (...) in undergraduate business and engineering programs and a graduate business program. The research instrument measured how business and engineering students perceive their own ethical beliefs and actions and how they perceived the ethical beliefs and actions of their peers. (shrink)

In his essay, I examine the nature of sacred time, focusing primarily though not exclusively on two aspects of sacred time: that it is “set aside” from use and that in this time human beings can be in union and communion with and in God. I argue that chronological, “clock” time and Heideggerian “datable” time are incapable of being directly consecrated as sacred time. In order to understand sacred time, I investigate the Fall and how this results in an essentially (...) instrumentalist understanding of the world and time, which has its ultimate motive in the drive for human self-sufficiency. Only against this backdrop can one properly understand the nature of human temporality and historicity with respect to sacred time as set apart from use and as that time we spend and thus share with Christ, thereby coming into union and communion with God. (shrink)

It is the laws of nature, among other things, that allow for the periodic processesthat underlie isochronic clocks. Is God in any Measured Time? If not, does our Measured Time measure the eternity of God? I will argue that God is not in any ...

It is widely held in contemporary philosophy of mind that states with underived representational content are ipso facto psychological states. This view—the Content View—underlies a number of interesting philosophical projects, such as the attempt to pick out a psychological level of explanation, to demarcate genuinely psychological from non-psychological states, and to limn the class of states with phenomenal character. The most detailed and influential theories of underived representation in philosophy are the tracking theories developed by Fodor, Dretske, Millikan and others. (...) Tracking theorists initially hoped to ‘naturalize’ underived representation by showing that although it is distinctively psychological it is not irreducibly so, yet they ended up developing theories of representation that by their own lights don’t pick out a distinctively psychological phenomenon at all. Burge sets out to develop a theory of underived representation that does pick out a distinctively psychological phenomenon. His theory promises to vindicate the Content View and the various philosophical projects that depend on it. In this paper I argue that Burge’s theory dementalizes representation for the same reason tracking theories do: These theories hold that representations are states with underived accuracy conditions, yet such states are found in all sorts of mindless systems, like plants. (shrink)

One of the areas of study of tafsīr is the stories in the Qur’ān. In the stories of the Qur’ān, generally creation, man, the nature of man and different societies that lived in history are mentioned. Although the main theme in the stories is belief and disbelief, social structures and cultural features are explicitly and indirectly mentioned as well. But the mufassirs approached the stories mainly from the point of view of belief and disbelief. They did not declare an opinion (...) on cultural studies. Positive science applies the culture, science and technology that humanity has, only to the will and labour of man. However, when we look at the sacred texts, humanity has not only realized its development in the field of culture, science and technology, but also evolved by the presence of divine grace as well as the mind. In this evolution, the prophets were given a special task. This study covers the prophets and some inventions and professions attributed to them. The examination of the influence of divine grace and the Prophet’s fatānah (outstanding reasoning power) in the development of culture, science and technology is among the importance of the study. Because when scientific determinations are examined, it is seen that the first cultural events and civil developments occurred in the geography of the Prophets. Again, it can be seen that the explanation of culture and cultural developments with a positivist perspective and an empirical paradigm has some shortcomings. For this reason, the article aims to explain how cultural developments are formed based on sacred information data. In the study, the qualitative method was selected and the document examination technique was applied. Along with cultural activities, the prophets and their works were discussed; classical and modern tafsīr sources, as well as historical books, akhīlik (a guild system) works and futuwwatnāmas (rules and regulations of the guild) were addressed. Man was created by Almighty Allah with different and superior equipment than other beings. He has been taught all names. Names mean having the ability to recognize-classify-name the creature, to reason, to transform the nature and to transfer the culture. The meaning of the verse “he taught him all the names” is to teach the Prophet Adam the knowledge of things and the general knowledge of civilized life. The general knowledge was developed by people and various and different objects were produced; science and technique were constantly developed. Especially the prophets made a great contribution to these scientific and technological developments. Thus, the prophets guided people in the spiritual sphere such as faith, worship and morality, as well as in the scientific and material sphere. Throughout the history, the prophets have shed light on scientific developments directly or indirectly, showing the limits of the level of science that humanity can reach through their miracles. According to Islāmic Sciences, the process of domesticating seeds and taming animals began during the reign of the Prophet Adam. He produced dresses for himself and his wife. As a prophet, a religion and belief system was formed during his time. Along with Prophet Idrīs, more beautiful dresses began to be knitted and sewn, writing with pencil. In the era of Prophet Noah, besides agriculture, art was also developed; sculptures and ships were made. During Prophet Hoad period, there was progress in agriculture as well as urbanization activities, and villages and towns began to form. During the reign of Ṣāleḥ, cities were founded in a serious sense. For this reason, in Prophet Ṣāleḥ’s stories, emphasis is placed on the words dār and diyār, which means house or houses, and in particular the word medīna (city) is used. The inscription, which began to be mentioned with Prophet Idris in Islāmic Sciences, also began to be used in the Qur’ān along with Prophet Abraham/Ibrāhīm, and during the reign of Prophet Moses/Mūsā, it was referred to as the book. During the reign of Prophet Joseph, money was invented and the clock and calendar were used. Again, Islāmic sources also contain the information that Prophet Joseph/Yūsuf invented paper for the first time. During the period of Prophet Shu‘ayb, the knowledge of account, measurement and weighing were developed, and they began to be used extensively in trade. During the reign of Prophet David/Dāwūd, iron was very widely used, and Prophet David, made household items out of iron, as well as war tools and equipment. Prophet Solomon/Sulaymān, on the other hand, expanded the processing of iron further, making it widely in all areas of life. During the reign of Prophet Jesus/ʿĪsā and Luqmān, medicine also made progress; Prophet Jesus developed and treated methods of treatment for crippled patients. Along with Islām, this information has been included and developed in the most detailed way in the Qur’ān, the personality of Prophet Muhammad (PBUH) and the Hadīth. (shrink)

O artigo traz resultados de uma investigação de mestrado que teve por objetivo pesquisar as concepções de um grupo de professores a respeito das funções que os mesmos exercem frente à sociedade contemporânea. Partiu-se da premissa de que suas concepções guardam relação com suas práticas educativas e pedagógicas. Trata-se de uma pesquisa desenvolvida na perspectiva qualitativa, com cinquenta e um professores que atuam em seis escolas estaduais da cidade de Ponta Grossa-PR. Elegeu-se como aporte teórico autores que tratam da formação (...) de professores e da profissão docente, como Freire, Imbernón, Ens e Behrens, Tozetto, Sacristán e Tedesco. Os dados foram coletados por meio de questionários, categorizados e analisados seguindo os pressupostos na Análise de Conteúdo. Três categorias foram configuradas a partir de significantes presentes nas respostas dos professores participantes: Categoria I – Professor como um sujeito transformador: educação em uma forma ampla, Categoria II – Professor como profissional do conhecimento, e Categoria III – Professor enquanto sujeito que desempenha vários papéis sociais. Essas categorias nos possibilitaram inferir que as concepções dos professores em relação ao seu papel na sociedade contemporânea vão além da função social da escola, pois centram-se primeiramente na figura de um profissional transformador do mundo; seguida da noção de profissional do conhecimento e, por fim, da ideia de um profissional que desempenha vários papéis sociais. A pesquisa também apontou uma necessária redefinição da profissão docente para que os professores assumam novas competências profissionais na contemporaneidade. Palavras-chave: Profissão docente. Função dos professores. Sociedade contemporânea. Concepções. (shrink)

The ArgumentRecent historiography of the Scientific Revolution has challenged the assumption that the achievements of seventeenth-century natural philosophy can easily be described as the ‘mechanization of the world-picture.’ That assumption licensed a story which took mechanization as self-evidently progressive and so in no need of further historical analysis. The clock-work world was triumphant and inevitably so. However, a close examination of one key group of natural philosophers working in England during the 1670s shows that their program necessarily incorporated (...) souls and spirits, attractions and congruities, within both their ontology and their epistemology. Any natural philosophical strategy which excluded spirits and sympathies from its world was condemned as tending to subversion and irreligion. This examination shows that the term ‘mechanical philosophy’ was a category given its meanings within local contexts and carries no universal sense separate from that accomplished by these natural philosophers. It also shows how the experimental praxis was compelled to treat souls and spirits, to produce them through experimental labor, and then to extend these experimentally developed entities throughout the cosmos, both social and natural. The development of mechanical philosophy cannot be used to explain the cognitive and social structure of this program, nor its success: instead, the historical setting of experimental work shows how a philosophy of matter and spirit was deliberately constructed by the end of the seventeenth century. (shrink)

Humanity's creative role within the living pattern of nature. Explores important scientific discoveries that reveal the self-organizing intelligence at the heart of nature. Examines the idea of a living cosmos from its roots in the earliest cultures, to its eclipse during the Scientific Revolution, to its return today. Reveals ways to reengage our creative partnership with nature and collaborate with nature's intelligence. For millennia the world was seen as a creative, interconnected web of life, constantly growing, developing, and restoring itself. (...) But with the arrival of the Scientific Revolution in the 16th and 17th centuries, the world was viewed as a lifeless, clock-like mechanism, bound by the laws of classical physics. Intelligence was a trait ascribed solely to human beings, and thus humanity was viewed as superior to and separate from nature. Today new scientific discoveries are reviving the ancient philosophy of a living, interconnected cosmos, and humanity is learning from and collaborating with nature's intelligence in new, life-enhancing ways, from ecological design to biomimicry. Drawing upon the most important scientific discoveries of recent times, David Fideler explores the self-organizing intelligence at the heart of nature and humanity's place in the cosmic pattern. He examines the ancient vision of the living cosmos from its roots in the "world soul" of the Greeks and the alchemical tradition, to its eclipse during the Scientific Revolution, to its return today. He explains how the mechanistic worldview led to humanity's profound sense of alienation, for if the universe only functioned as a machine, there was no longer any room for genuine creativity or spontaneity. He shows how this isn't the case and how, even at the molecular level, natural systems engage in self-organization, self-preservation, and creative problem solving, mirroring the ancient idea of a creative intelligence that exists deep within the heart of nature. Revealing new connections between science, religion, and culture, Fideler explores how to reengage our creative partnership with nature and new ways to collaborate with nature's intelligence. (shrink)

RESUMEN Durante el siglo XVII, el reloj parece el modelo más adecuado para pensar los seres vivos. El filósofo alemán G. W. Leibniz es parte de la tradición mecanicista que concibe los seres vivos a partir del modelo del reloj o de los autómatas, pero establece una distinción esencial entre máquinas naturales y artificiales, que muestra los límites de este modelo. Las primeras son máquinas infinitamente complejas, máquinas dentro de máquinas ad infinitum, las segundas no, alcanzan un límite de complejidad. (...) Esta distinción obliga a ir más allá del reloj como modelo de los seres vivos, pues este modelo resulta insuficiente para comprender la dinámica propia de los seres vivos, en al menos dos aspectos: a) deja sin explicar el origen de la estructura o forma del ser vivo; b) no establece un principio interno de actividad que fundamente la unidad dinámica y estructural del ser vivo. Con su noción de organismo o máquina natural, Leibniz intenta resolver estas insuficiencias del modelo puramente mecánico: a) en su propuesta el ser vivo no se constituye de manera mecánica o serial, sino de una vez, por un acto de creación; b) la conservación del ser vivo en el tiempo sólo es comprensible a partir de un principio de actividad intrínseca que dota de unidad, actividad y estructura al viviente. ABSTRACT During the seventeenth century, the clock seems the most appropriate model for thinking about living beings. The German philosopher G. W. Leibniz, is part of the mechanical tradition that conceives living beings from the clock or the automata’s model, but he establishes an essential distinction between natural and artificial machines. This distinction shows the limits of the mechanical model. The machines of nature are infinitely complex machines, machines within machines ad infinitum; the artificial machines, instead, reach a limit of complexity. This distinction forces us to go beyond the clock as a model of living beings, because this model is insufficient to understand the dynamics of living beings, in at least two aspects: a) it is not able to explain the origin of the living being’s structure or form; b) it does not establish an internal principle of activity grounding the living being’s dynamic and structural unit. With his notion of organism or natural machine, Leibniz tries to solve these insufficiencies of the purely mechanical model: a) in his proposal, the living being is not constituted mechanically or serially, but at once, by an act of creation; b) the conservation of the living being in time is only understandable from a principle of intrinsic activity that provides unity, activity and structure to living beings. (shrink)

Old and recent ideas concerning the nature of time are reviewed, starting from Mach's refusal of Newton's absolute time. Many experiments show that the slowing down of moving clocks is a real phenomenon. Such must then also be the so-called “twin paradox,” which owes its name to its evident incompatibility with the philosophy of relativism (not to be confused with the theory of relativity). The Lorentz reformulation of special relativity started by postulating physical effects of the ether, but accepted (...) Einstein's clock synchronization. Only because of this Lorentz could not understand the advantages of an easily deducible different theory. As stressed by Popper, one of the main problems of the usual approach is the introduction of a superdeterministic universe. Recent results obtained by the author show that a theory is possible, based on relative time but on absolute simultaneity, in which the conceptual difficulties of relativity are avoided. (shrink)