Free Ebook Shadows of the Mind: A Search for the Missing Science of Consciousness, by Roger Penrose
Free Ebook Shadows of the Mind: A Search for the Missing Science of Consciousness, by Roger Penrose
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Shadows of the Mind: A Search for the Missing Science of Consciousness, by Roger Penrose
Free Ebook Shadows of the Mind: A Search for the Missing Science of Consciousness, by Roger Penrose
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From Library Journal
This book asserts that human consciousness is not necessarily intelligible in terms of computational models. The brain's conscious activity essentially transcends the forms or possibilities of computation. Penrose (mathematics, Oxford) illustrates his thesis via mathematical logic, including detailed discussions of Godel's proposition of incompleteness, Turing's machines and computabilities, quantum mechanics, and microbiology. Eventually, Penrose argues that artificial intelligence and computer-controlled expert systems are capable of assisting local human expertise but will not be able to replace such expertise. Expanding on some of the ideas and concepts proposed in his controversial book, The Emperor's New Mind (Oxford Univ. Pr., 1989), Penrose challenges others to reconsider traditional concepts. Some familiarity with mathematical logic or processes will facilitate one's appreciation of this book. Recommended for scholars, specialists, and informed lay readers.Donald G. Frank, Harvard Univ., Cambridge, Mass.Copyright 1994 Reed Business Information, Inc.
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From Kirkus Reviews
A leading critic of artificial intelligence research returns to the attack, attempting to lay the groundwork for an analysis of the true nature of intelligence. Building on his arguments in The Emperor's New Mind (not reviewed), Penrose (Mathematics/Oxford) begins by refuting the assertion that true intelligence can be attained--or even adequately simulated--by the strictly computational means to which current computers are ultimately limited. Much of his argument depends closely on the application of G”del's Undecidability Theorem to Turing machines--deep waters for laypeople, although the fundamentals of his argument are accessible to readers without sophisticated mathematical training. Having disposed of the central tenets of current AI research, Penrose then turns to an even more fundamental question: the actual foundations in modern physics (i.e., relativity and quantum theory) of the phenomenon of consciousness. Here much of his summary depends on fairly complex mathematical reasoning, although the key points are summarized for the general reader who has been willing to follow him so far. Penrose feels that a new physical synthesis, reconciling the paradoxes of quantum theory and bringing them into harmony with Einstein's gravitational theories, is ultimately necessary to explain the noncomputational elements of consciousness and intelligence. He speculates on the possible role of cellular structures called microtubules in creating a quantum phenomenon on a macroscopic scale within the brain, but grants that more research is needed to establish any connection between physical and mental phenomena. His conclusion steps back to a philosophical overview of the subject, paying homage to Plato, among others. A challenging examination of a central problem of modern philosophy, with no final answers but plenty of food for thought. (76 line drawings) (First printing of 50,000; $50,000 ad/promo) -- Copyright ©1994, Kirkus Associates, LP. All rights reserved.
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Product details
Hardcover: 480 pages
Publisher: Oxford University Press; First Edition edition (October 20, 1994)
Language: English
ISBN-10: 0198539789
ISBN-13: 978-0198539780
Product Dimensions:
6.2 x 1.5 x 9.4 inches
Shipping Weight: 2.2 pounds (View shipping rates and policies)
Average Customer Review:
4.1 out of 5 stars
49 customer reviews
Amazon Best Sellers Rank:
#251,127 in Books (See Top 100 in Books)
I rate this book highly for its many interesting insights---great food for thought. I think Penrose' assessments of models of consciousness by other physicists are on the mark, including his critique of decoherence theories. He is probably on the right track in treating the collapse of the wave function as a real phenomenon, in which case he is correct is saying "what is going on will have no chance of being properly understood until we have a much more profound appreciation of the very nature of matter, time, space, and the laws that govern them." (p. 395)I was not persuaded by Penrose' own theory at all. The only connection between quantum mechanics and consciousness is that they are both mysterious. Moreover, it is the qualia of consciousness that is mysterious, not the fact that we are non-algorithmic.
Penrose is my favorite science author. He's not for everyone -- he's not afraid to use mathematics, and his diagrams (for me) are often unintelligible, but his pursuit of an understanding of the mind at the quantum level is worthwhile, even noble.
You think when you skim it "oh this is too mathy" but it isn't. You can understand everything, without any advanced math skills at all!
Another stunning book by Sir Roger Penrose. It's really a five star book discounted here by one star because those lacking physics and mathematics will find some passages hard work, even though the author is being as kind as possible in a book of this calibre.The book is a neat sequel to his "The Emperor's New Mind", extending the central theme that our little-understood human consciousness allows us to think way beyond the computational and mindless world of artificial intelligence.In doing so, we have a marvellous survey of classical and modern physics, including the mysteries of the quantum world.Sir Roger raises the question 'Will we ever be able to truly understand our own Nature-provided brain and its processes in terms of our own science?', and argues that, somewhere out there beyond our present reach, there is a unifying Platonic view of the Universe.This book is a tour de force on several planes. Highly recommended.
Penrose's writing is somewhat thick. It is worth slogging through it, however. Consciousness is the X factor in experiments. It is a large part of quantum mechanics. I liked this book. It is not light reading, though.
I studied physics and math and love popular science. Still, I found this book obtuse and non-engaging. Gave up after 3 focused attempts at reading it.
This is not an easy book to read or to follow. Still, it's required reading for someone like me who is interested in the Penrose-Hameroff theory of consciousness. I am always grateful when academics like Penrose write books for the general public.
Excellent alternative view to mainstream philosophy. Vast improvement over the emperor's new mind, especially in terms of having taken criticism on board. It can be read independently, even though it can also be read as a sequel of sorts. If mind and consciousness are interesting to you, and you like hearing about theories in physics, this is a great book.
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