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Shadows of the Mind: A Search for the Missing Science of Consciousness

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Publisher Comments:

A New York Times bestseller when it appeared in 1989, Roger Penrose's The Emperor's New Mind was universally hailed as a marvelous survey of modern physics as well as a brilliant reflection on the human mind, offering a new perspective on the scientific landscape and a visionary glimpse of the possible future of science. Now, in Shadows of the Mind, Penrose offers another exhilarating look at modern science as he mounts an even more powerful attack on artificial intelligence. But perhaps more important, in this volume he points the way to a new science, one that may eventually explain the physical basis of the human mind.

Penrose contends that some aspects of the human mind lie beyond computation. This is not a religious argument (that the mind is something other than physical) nor is it based on the brain's vast complexity (the weather is immensely complex, says Penrose, but it is still a computable thing, at least in theory). Instead, he provides powerful arguments to support his conclusion that there is something in the conscious activity of the brain that transcends computation--and will find no explanation in terms of present-day science. To illuminate what he believes this "something" might be, and to suggest where a new physics must proceed so that we may understand it, Penrose cuts a wide swathe through modern science, providing penetrating looks at everything from Turing machines (computers programmed from artificial intelligence) to the implications of Godel's theorem maintaining that conscious thinking must indeed involve ingredients that cannot adequately be stimulated by mere computation. Of particular interest is Penrose's extensive examination of quantum mechanics, which introduces some new ideas that differ markedly from those advanced in The Emperor's New Mind, especially concerning the mysterious interface where classical and quantum physics meet. But perhaps the most interesting wrinkle in Shadows of the Mind is Penrose's excursion into microbiology, where he examines cytoskeletons and microtubules, minute substructures lying deep within the brain's neurons. (He argues that microtubules--not neurons--may indeed be the basic units of the brain, which, if nothing else, would dramatically increase the brain's computational power.) Furthermore, he contends that in consciousness some kind of global quantum state must take place across large areas of the brain, and that it within microtubules that these collective quantum effects are most likely to reside.

For physics to accommodate something that is as foreign to our current physical picture as is the phenomenon of consciousness, we must expect a profound change--one that alters the very underpinnings of our philosophical viewpoint as to the nature of reality. Shadows of the Mind provides an illuminating look at where these profound changes may take place and what our future understanding of the world may be.

Description:

Includes bibliographical references (p. [425]-445) and index.

About the Author

Roger Penrose is the Rouse Ball Professor of Mathematic at the University of Oxford. He is the author of The Emperor's New Mind, which was a New York Times bestseller and was awarded the UK's 1990 COPUS Prize for science writing. In 1988, he received the internationally prestigious Wolf Prize for physics, shared with Stephen Hawking, for their joint contribution to our understanding of the universe.

Table of Contents

Preface


Acknowledgements


Prologue


Part One: Why we Need New Physics to Understand the Mind


1. Consciousness and computation


2. The Godelian case


3. The case for non-computability in mathematical thought


Part Two: What New Physics we Need to Understand the Mind


4. Does Mind Have a Place in Classical Physics?


5. Structure of the Quantum World


6. Quantum theory and reality


7. Quantum theory and the brain


8. Implications?


Epilogue


Product Details

ISBN:
9780195106466
Author:
Penrose, Roger
Publisher:
Oxford University Press, USA
Author:
null, Roger
Location:
New York :
Subject:
Physics
Subject:
Mind & Body
Subject:
Artificial Intelligence
Subject:
Molecular Physics
Subject:
Artificial Intelligence - General
Subject:
Intelligence (AI) & Semantics
Subject:
Philosophy : General
Edition Number:
2
Series Volume:
207
Publication Date:
19960831
Binding:
TRADE PAPER
Grade Level:
General/trade
Language:
English
Illustrations:
79 illus.
Pages:
480
Dimensions:
9.22x6.14x.97 in. 1.47 lbs.

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Related Subjects

Computers and Internet » Artificial Intelligence » General
Computers and Internet » Computers Reference » General
Computers and Internet » Personal Computers » General
Health and Self-Help » Psychology » Cognitive Science
Health and Self-Help » Psychology » Mind and Consciousness
Humanities » Philosophy » General
Science and Mathematics » Physics » General
Science and Mathematics » Physics » Popular

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