Dean Rickles

Why life’s shortness—more than anything else—is what makes it meaningful Death might seem to render pointless all our attempts to create a meaningful life. Doesn’t meaning require transcending death through an afterlife or in some other way? On the contrary, Dean Rickles argues, life without death would be like playing tennis without a net. Only constraints—and death is the ultimate constraint—make our actions meaningful. In Life Is Short, Rickles explains why the finiteness and shortness of life is the essence of its meaning—and how this insight is the key to making the most of the time we do have. Life Is Short explores how death limits our options and forces us to make choices that forge a life and give the world meaning. But people often live in a state of indecision, in a misguided attempt to keep their options open. This provisional way of living—always looking elsewhere, to the future, to other people, to other ways of being, and never committing to what one has or, alternatively, putting in the time and energy to achieve what one wants—is a big mistake, and Life Is Short tells readers how to avoid this trap. By reminding us how extraordinary it is that we have any time to live at all, Life Is Short challenges us to rethink what gives life meaning and how to make the most of it.

An Appropriately Brief Guide to Making It More Meaningful

Life Is Short

Xerxes D. Arsiwalla

Hatem Elshatlawy

This volume argues that concepts from the theory of computation—including information theory, formal languages, and discrete structures—might provide novel paths towards a solution to the problem of quantum gravity. By combining elements of physics with computer science and mathematics, the volume proposes to transform the foundations of spacetime physics and bring it into the digital age. In recent years, it has become increasingly apparent a new theoretical framework will be needed to solve the problem of quantum gravity. This kind of framework—sometimes referred to as “pregeometry” or even “prephysics”—goes beyond conventional mathematical conceptions of space, time, and matter, seeking their building blocks in more fundamental elements. The essays in this volume explore this approach from a variety of perspectives, including physics-based, mathematical, computational, and philosophical. The new formal frameworks needed to discuss such approaches have their roots in homotopy type theory, formal language theory, and higher category theory; the computational perspective is informed by connections between pregeometric structures and formal proofs and programs. The new philosophical fulcrum supporting these new avenues is inspired by constructivism and meta-structures. By probing at a level of structure beneath the ordinary structures used in general relativity and quantum mechanics, this volume seeks to find new ways of showing how these higher-order structures can be constructed from the deeper elements. Quantum Gravity and Computation is an essential resource for scholars and graduate students interested in the philosophy of physics, quantum mechanics, and computational science.

Information, Pregeometry, and Digital Physics

Quantum Gravity and Computation

Steven French

George Darby

Otávio Bueno

Thinking about Science, Reflecting on Art: Bringing Aesthetics and Philosophy of Science Together is the first book to systematically examine the relationship between the philosophy of science and aesthetics. With contributions from leading figures from both fields, this edited collection engages with such questions as: Does representation function in the same way in science and in art? What important characteristics do scientific models share with literary fictions? What is the difference between interpretation in the sciences and in the arts? Can there be a science of aesthetics? In what ways can aesthetics and philosophy of science be integrated? Aiming to develop the interconnections between the philosophy of science and the philosophy of art more broadly and more deeply than ever before, this volume not only explores scientific representation by comparison with fiction but extends the scope of interaction to include metaphysical and other questions around methodology in mainstream philosophy of science, including the aims of science, the characterisation of scientific understanding, and the nature of observation, as well as drawing detailed comparisons between specific examples in both art and the sciences.

Bringing Aesthetics and Philosophy of Science Together

Thinking about Science, Reflecting on Art

In this book Rickles considers several interpretative difficulties raised by gauge-type symmetries (those that correspond to no change in physical state). The ubiquity of such symmetries in modern physics renders them an urgent topic in philosophy of physics. Rickles focuses on spacetime physics, and in particular classical and quantum general relativity. Here the problems posed are at their most pathological, involving the apparent disappearance of spacetime! Rickles argues that both traditional ontological positions should be replaced by a structuralist account according to which relational structure is what the physics is about. · Unified treatment of gauge symmetries and their relationship to ontology in physics · Brings philosophy of space and time into step with developments in modern physics · Argues against the received view on the implications of symmetries in physics · Provides elementary treatments of technical issues · Illustrates a novel defense of structuralism

Symmetry, Structure, and Spacetime

Introducing the reader to the very latest developments in the philosophical foundations of physics, this book covers advanced material at a level suitable for beginner and intermediate students. A detailed overview is provided of the central debates in the philosophy of quantum mechanics, statistical mechanics, quantum computation, and quantum gravity. This book enables both philosophers and physicists to engage with the most pressing problems in contemporary philosophy of physics in a fruitful way.

The Ashgate Companion to Contemporary Philosophy of Physics

The problem of quantum gravity is often viewed as the most pressing unresolved problem of modern physics: our theories of spacetime and matter, described respectively by general relativity (Einstein's theory of gravitation and spacetime) and quantum mechanics (our best theory of matter and the other forces of nature) resist unification. Covered with Deep Mist provides the first book-length treatment of the history of quantum gravity, focusing on its origins and earliest stages of development until the mid-1950s. Readers will be guided through the impacts on the problem of quantum gravity resulting from changes in the two ingredient theories, quantum theory and general relativity, which were themselves still under construction in the years studied. We examine how several of the core approaches of today were formed in an era when the field was highly unfashionable. The book aims to be accessible to a broad range of readers and goes beyond a merely technical examination to include social and cultural factors involved in the changing fortunes of the field. Suitable for both newcomers and seasoned quantum gravity professionals, the book will shine new light on this century-old, unresolved problem.

The Development of Quantum Gravity (1916-1956)

Covered with Deep Mist

Juha T. Saatsi

Quantum gravity is the name given to a theory that unites general relativity - Einstein's theory of gravitation and spacetime - with quantum field theory, our framework for describing non-gravitational forces. The Structural Foundations of Quantum Gravity brings together philosophers and physicists to discuss a range of conceptual issues that surface in the effort to unite these theories, focusing in particular on the ontological nature of the spacetime that results. Although there has been a great deal written about quantum gravity from the perspective of physicists and mathematicians, very little attention has been paid to the philosophical aspects. This volume closes that gap, with essays written by some of the leading researchers in the field. Individual papers defend or attack a structuralist perspective on the fundamental ontologies of our physical theories, which offers the possibility of shedding new light on a number of foundational problems. It is a book that will be of interest not only to physicists and philosophers of physics but to anyone concerned with foundational issues and curious to explore new directions in our understanding of spacetime and quantum physics.

The Structural Foundations of Quantum Gravity

Philosophy of science puts science itself under the microscope: What exactly is science? How do its explanations of the world differ from those of other subjects, including so-called “pseudo-sciences”? How should we understand and evaluate scientific methods? What, if anything, can science tell us about the nature of physical reality? Dean Rickles guides beginners through the central topics in philosophy of science. He looks at the origins and evolution of the field, the issues that arise when distinguishing between science and non-science, the concepts of logic and associated problems, scientific realism and anti-realism, and the nature of scientific models and representing. Rickles brings the subject to sparkling life with a user-friendly tone and rich, real-world examples. What is Philosophy of Science? is the must-have primer for students getting to grips with this broad-ranging and important topic.

What is Philosophy of Science?

During its forty year lifespan, string theory has always had the power to divide, being called both a 'theory of everything' and a 'theory of nothing'. Critics have even questioned whether it qualifies as a scientific theory at all. This book adopts an objective stance, standing back from the question of the truth or falsity of string theory and instead focusing on how it came to be and how it came to occupy its present position in physics. An unexpectedly rich history is revealed, with deep connections to our most well-established physical theories. Fully self-contained and written in a lively fashion, the book will appeal to a wide variety of readers from novice to specialist.

From Dual Models to M-Theory

A Brief History of String Theory

Does the future exist already? What is space? Are time machines physically possible? What is quantum mechanical reality like? Are there many universes? Is there a ‘true’ geometry of the universe? Why does there appear to be an arrow of time? Do humans play a special role in the world? In this unique introductory book, Dean Rickles guides the reader through these and other core questions that keep philosophers of physics up at night. He discusses the three pillars of modern physics (quantum mechanics, statistical mechanics, and the theories of relativity), in addition to more cutting-edge themes such as econophysics, quantum gravity, quantum computers, and gauge theories. The book’s approach is based on the idea that philosophy of physics is a kind of ‘interpretation game’ in which we try to map physical theories onto our world. But the rules of this game often lead to a multiplicity of possible victors: rarely do we encounter a simple answer. The Philosophy of Physics offers a highly accessible introduction to the latest developments in this exciting field. Written in a lively style, with many visual examples, it will appeal to beginner-level students in both physics and philosophy.

Dean Rickles

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