This book is a treatise on time and on background independence in physics. It first considers how time is conceived of in each accepted paradigm of physics: Newtonian, special relativity, quantum mechanics (QM) and general relativity (GR). Substantial differences are moreover uncovered between what is meant by time in QM and in GR. These differences jointly source the Problem of Time: Nine interlinked facets which arise upon attempting concurrent treatment of the QM and GR paradigms, (...) as is required in particular for a background independent theory of quantum gravity. A sizeable proportion of current quantum gravity programs - e.g. geometrodynamical and loop quantum gravity approaches to quantum GR, quantum cosmology, supergravity and M-theory - are background independent in this sense. This book's foundational topic is thus furthermore of practical relevance in the ongoing development of quantum gravity programs. This book shows moreover that eight of the nine facets of the Problem of Time already occur upon entertaining background independence in classical (rather than quantum) physics. By this development, and interpreting shape theory as modelling background independence, this book further establishes background independence as a field of study. Background independent mechanics, as well as minisuperspace (spatially homogeneous) models of GR and perturbations thereabout are used to illustrate these points. As hitherto formulated, the different facets of the Problem of Time greatly interfere with each others' attempted resolutions. This book explains how, none the less, a local resolution of the Problem of Time can be arrived at after various reconceptualizations of the facets and reformulations of their mathematical implementation. Self-contained appendices on mathematical methods for basic and foundational quantum gravity are included. Finally, this book outlines how supergravity is refreshingly different from GR as a realization of background independence, and what background independence entails at the topological level and beyond. (shrink)

The `problem of time' is a cluster of interpretational and formal issues in the foundations of general relativity relating to both the representation of time in the classical canonical formalism, and to the quantization of the theory. The purpose of this short chapter is to provide an accessible introduction to the problem.

The problem of Time is one of the most fascinating and yet most difficult of those questions to which the human mind applies itself in philosophical thought. Dean Inge, in his Philosophy of Plotinus, has referred to this problem as ‘the hardest in metaphysics,’ and we know that “from the time of Parmenides and Zeno to that of Mr. Bradley and M. Bergson, there has been no other problem that has seemed so baffling as that (...) of Time.”. (shrink)

The problem of Time is one of the most fascinating and yet most difficult of those questions to which the human mind applies itself in philosophical thought. Dean Inge, in his Philosophy of Plotinus , has referred to this problem as ‘the hardest in metaphysics,’ and we know that “from the time of Parmenides and Zeno to that of Mr. Bradley and M. Bergson, there has been no other problem that has seemed so baffling as (...) that of Time.”. (shrink)

Responding to Hasok Chang’s vision of the history and philosophy of science as the continuation of science by other means, I illustrate the methods of HPS and their utility through a historico-critical examination of the problem of “time’s arrow‘, that is to say, the problem posed by the claim by Boltzmann and others that the temporal asymmetry of many physical processes and indeed the very possibility of identifying each of the two directions we distinguish in time (...) must have a ground in the laws of nature. I claim that this problem has proved intractable chiefly because the standard mathematical representation of time employed in the formulation of the laws of nature “forgets‘ one of the connotations of the word ”time’ as it is used in ordinary language and in experimental physics. (shrink)

The problem of Time is one of the most fascinating and yet most difficult of those questions to which the human mind applies itself in philosophical thought. Dean Inge, in his Philosophy of Plotinus, has referred to this problem as ‘the hardest in metaphysics,’ and we know that “from the time of Parmenides and Zeno to that of Mr. Bradley and M. Bergson, there has been no other problem that has seemed so baffling as that (...) of Time.”. (shrink)

A genesis of the ideas concerning Husserl’s concepts of time and reflective structure of consciousness is analysed in this article. There will be taken into account in the article three main texts: ”Vorlesungenzur Phanomenologie des inneren Zeitbewusstseins”, ”Bernauer Manuskripte” and ”C-Manuskripte”. Next topics will be discussed: reflexive structure of consciousness as genetic problem, Ego as an emanate cen-ter of time construction, possibility of the achievement of hyletical, non-reflexive consciousness structure.

This book explores the problem of time and immanence for phenomenology in the work of Edmund Husserl, Martin Heidegger, Maurice Merleau-Ponty, and Jacques Derrida. Detailed readings of immanence in light of the more familiar problems of time-consciousness and temporality provide the framework for evaluating both Husserl's efforts to break free of modern philosophy's notions of immanence, and the influence Heidegger's criticism of Husserl exercised over Merleau-Ponty's and Derrida's alternatives to Husserl's phenomenology. Ultimately exploring various notions of intentionality, (...) these in-depth analyses of immanence and temporality suggest a new perspective on themes central to phenomenology's development as a movement and raise for debate the question of where phenomenology begins and ends. (shrink)

'China, by her resources and her population, is capable of being the greatest power in the world after the United States.' Bertrand Russell, The Problem of China In 1920 the philosopher Bertrand Russell spent a year in China as Professor of Philosophy at the University of Beijing, where his lectures on mathematical logic enthralled students and listeners, including Mao Tse Tung, who attended some of Russell's talks. Written at a time when China was largely regarded by the West (...) as backward and weak, The Problem of China sees Russell rise above the prejudices of his era and presciently assess China's past, present and future. Russell brings his analytical and insightful eye to bear on some fundamental aspects of China's history and politics, cautioning China against adopting a purely Western model of social and economic development, which he regarded as characterized by a combination of greed and militarism. Beginning with an overview of nineteenth-century Chinese history and considering China's relations with Japan and Russia, Russell then contrasts Chinese civilization with Western. He devotes a fascinating chapter to the character of the Chinese, which he argues is complex but ultimately defined by a 'pacific temper'. With uncanny foresight, Russell predicts China's resurgence, but only if it is able to establish an orderly government, promote industrial development under Chinese control and foster the spread of education. This Routledge Classics edition includes a new introduction by Bernard Linsky. (shrink)

The American philosophy and the problem of time –[article]– attempts to briefly outline the concepts of understanding of the problem of time, temporality and continuity in American philosophy which is represented by Ch. Peirce, W. James, and A. N. Whitehead. The article also tries to point out the importance of the enquiry on the field of time. Further, it gives abbreviated outline of the historic conditions of emergence of the American philosophy.

Symplectic reduction is a formal process through which degeneracy within the mathematical representations of physical systems displaying gauge symmetry can be controlled via the construction of a reduced phase space. Typically such reduced spaces provide us with a formalism for representing both instantaneous states and evolution uniquely and for this reason can be justifiably afforded the status of fun- damental dynamical arena - the otiose structure having been eliminated from the original phase space. Essential to the application of symplectic reduction (...) is the precept that the first class constraints are the relevant gauge generators. This prescription becomes highly problematic for reparameterization invariant theories within which the Hamiltonian itself is a constraint; not least because it would seem to render prima facie distinct stages of a history physically identical and observable functions changeless. Here we will consider this problem of time within non-relativistic me- chanical theory with a view to both more fully understanding the temporal struc- ture of these timeless theories and better appreciating the corresponding issues in relativistic mechanics. For the case of nonrelativistic reparameterization invariant theory application of symplectic reduction will be demonstrated to be both unnec- essary; since the degeneracy involved is benign; and inappropriate; since it leads to a trivial theory. With this anti-reductive position established we will then examine two rival methodologies for consistently representing change and observable func- tions within the original phase space before evaluating the relevant philosophical implications. We will conclude with a preview of the case against symplectic re- duction being applied to canonical general relativity. (shrink)

There are arguments for determinism. Admittedly, this is opposed by the fact of everyday experience of autonomy. In the following, it is argued for the compatibility of determinism and autonomy. Taking up considerations of Donald MacKay, a fatalistic attitude can be refuted as false. Repeatedly, attempts have been made to defend the possibility of autonomy with reference to quantum physical indeterminacy. But its statistical randomness clearly misses the meaning of autonomy. What is decisive, on the other hand, is the possibility (...) of knowledge, which opens up opportunities for planning, freedom of choice and ultimately 'self-choice'. Results of neurobiological research, especially Benjamin Libet's and more recently John-Dylan Haynes', seem to refute this: Actions are unconsciously initiated before conscious decision. But, as Libet has also shown, consciousness always has the possibility of a veto – and thus also of knowledge-driven action control. Ultimately, the idea of possible self-choice can thus become the determining condition. Only such a form of rational self-determination establishes a spiritual identity and at the same time represents the maximum of autonomy possible for human beings. (shrink)

Early in the first volume of his Ideen zu einer reinen Phiinomeno logie und phiinomenologischen Philosophie, Edmund Husserl stated concisely the significance and scope of the problem with which this present study is concerned. When we reflect on how it is that consciousness, which is itself absolute in relation to the world, can yet take on the character of transcendence, how it can become mundanized, We see straightaway that it can do that only by means of a certain participation (...) in transcendence in the first, originary sense, which is manifestly the transcendence of material Nature. Only by means of the experiential relation to the animate organism does consciousness become really human and animal (tierischen), and only thereby does it achieve a place in the space and in the time of Nature. l Consciousness can become "worldly" only by being embodied within the world as part of it. In so far as the world is material Nature, consciousness must partake of the transcendence of material Nature. That is to say, its transcendence is manifestly an embodiment in a material, corporeal body. Consciousness, thus, takes on the characteristic of being "here and now" (ecceity) by means of experiential (or, more accurately, its intentive) relation to that corporeal being which embodies it. Accordingly, that there is a world for consciousness is a conse quence in the first instance of its embodiment by 2 that corporeal body which is for it its own animate organism. (shrink)

Several novel approaches have been proposed to resolve the problem of time by relating it to change. We argue using quantum information theory that the Hamiltonian constraint in quantum gravity cannot probe change, so it cannot be used to obtain a meaningful notion of time. This is due to the absence of quantum Fisher information with respect to the quantum Hamiltonian of a time-reparametization invariant system. We also observe that the inability of this Hamiltonian to probe (...) change can be related to its inability to discriminate between states of such a system. However, if the time-reparametization symmetry is spontaneously broken due to the formation of quantum cosmological time crystals, these problems can be resolved, and it is possible for time to emerge in quantum gravity. (shrink)

Resumo: Este texto tem por objeto a análise da intuição, das especificidades das definições bergsonianas e suas distinções em relação à visão moderna, sobretudo da doutrina kantiana, buscando mostrar os pontos de rompimento e avanço de Bergson em relação a essa concepção. O que se nota, em um primeiro momento, é como a obra de Bergson está de certo modo intimamente ligada a alguns temas clássicos da teoria do conhecimento já amplamente trabalhados na obra de Kant, razão pela qual esse (...) autor está presente desde o início de seu pensamento, desde o Ensaio sobre os dados da consciência, estendendo-se mesmo por quase todo o conjunto de sua obra. De fato, se se abordar os textos de Bergson pela sua referência à história da filosofia, será Kant, sem dúvida, que aparecerá como seu grande interlocutor; na maior parte das vezes como contrapondo a uma crítica que pode ser estendida a toda tradição filosófica, sobretudo àquela que teria subjugado a metafísica aos métodos e orientações da ciência. É natural, com efeito, que o autor da Crítica da Razão Pura surja como personagem importante na obra de Bergson. O pensamento de Kant está assentado em um momento importante quanto aos "rumos" da filosofia, especialmente no que diz respeito ao alcance da metafísica. E, se Bergson expressara, em sua doutrina, todo um esforço para reaver o lugar de direito da metafísica, ampliando mesmo, para além dos limites da análise científica, seu alcance, é certamente Kant que ele haveria de encontrar em suas investigações.: This text aims to analyze intuition, the specificities of the Bergsonian definitions relevant to it, and their distinctions relative to the modern view. Above all, we discuss the doctrine of Kant and seek to show Bergson's points of rupture and advancement in relation to this conception. What is noticeable at first glance is how Bergson's work is in a certain way intimately linked to some classical themes of the theory of knowledge already extensively treated in Kant's work. Kant is present from the beginning of Bergson's thought, ever since his An Essay on the Immediate Data of Consciousness, and his influence extends through almost all of Bergson's work. In fact, if one approaches the texts of Bergson in terms of his references to the history of philosophy, it is no doubt Kant who appears as the great interlocutor, in most cases advancing a critique that can be extended to the whole philosophical tradition, especially to that part which would subjugate metaphysics to the methods and orientations of science. It is natural, indeed, that the author of the Critique of Pure Reason emerges as an important character in Bergson's work. Kant's thinking appeared at an important moment in terms of the "directions" of philosophy, especially with regard to the attainment of metaphysics. Bergson expressed in his doctrine an effort to reclaim the rightful place of metaphysics, even extending its reach beyond the limits of scientific analysis, and thus it is certain that he would encounter Kant in his investigations. (shrink)

In this course we will examine several philosophical puzzles concerning time. We all seem to experience time in a very fundamental and direct way. Yet once we begin to reflect on what time really is, it is easy to feel as puzzled as St Augustine was, who wrote: “If no one asks me, I know what [time] is. If I wish to explain it to him who asks me, I do not know.” The first set of (...) issues we will discuss concern the question whether time is ‘real.’ Time appears to consist of past, present and future. But do the past and the future exist in the same way as the present or is only the present real? Does time ‘flow’? In what ways is time different from space? What would it be to ‘spatialize’ time? Next we will ask whether certain views of time imply that there can be no freedom of the will. One might worry that if facts about the future (including facts about what I will do tomorrow) already existed in the same way as facts about the present exist, then I could not be free to choose what I will do. After all, how can I be free to decide to skip class tomorrow, if it is ‘already’ a fact today that I will attend class? What, if anything, is the connection between various views of time and ‘fatalism’? The third topic we will discuss is time travel. First we will ask whether time travel is a conceptual possibility. As we will see, there are certain conceptual puzzles associated with the possibility of time travel. For example, one might think that if time travel is possible, then I should be able to travel back in time and kill my father before the date of my conception. But this scenario seems to lead to a contradiction. Some have taken considerations such as these to argue that the very idea of time travel is incoherent. Is this right? If not, why not? Then we will look at what the theory of relativity says about the nature of time in general and about the physical possibility of time travel more specifically. Finally we will examine several issues concerning the asymmetry of time.. (shrink)

Excerpt from The Problem of Philosophy at the Present Time: An Introductory Address Delivered to the Philosophical Society of the University of Edinburgh All, and to ask you to adopt, for the time, a point of view which may not be your own. Afterwards you can avenge yourselves for this temporary submission by subjecting my words to what criticism you think fit. A philosophic temper is shown, above all things, in the power of entering into the views (...) of another, and taking them for the moment almost as if they were your own, without prejudice to the subsequent critical reaction, which will be effective just in proportion to the degree of your previous sympathetic appreciation of the ideas criticised. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. (shrink)