The Emperor's New Mind: Concerning Computers, Minds, and the Laws of Physics

The Emperor's New Mind: Concerning Computers, Minds, and the Laws of Physics
by Roger Penrose

The Emperor's New Mind: Concerning Computers, Minds, and the Laws of Physics
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Book Summary Information

Author: Roger Penrose
Narrator: Michael Jackson
Edition: Audio Cassette
Audio: English (Unknown); English (Original Language); English (Published)
Format: Abridged
Published: 2001-09
ISBN: 1931056781
Publisher: New Millennium Audio

Book Reviews of The Emperor's New Mind: Concerning Computers, Minds, and the Laws of Physics

Book Review: A great, great book.
Summary: 5 Stars

I was compelled to write as I came by on the way to buying Dr. Penrose's more recent book ("Road to Reality") and was appalled that Amazon features 2 out of 3 negative views on the first page, including one which dismisses the "Emperor's new mind" as "rubbish". Surely the book is controversial in certain quarters, but the vehemence of much of the criticism can only make me wonder why some people are so defensive about it.

I have to admit I have not reread this book since my original reading around 1990, so take my remarks at some discount on that basis. But I will tell you that this book remains influential in my choice of what I read and how I evaluate things even to this day. It has indeed changed my life.

Dr. Penrose's premise is that a computer simulation of a brain will not achieve the equivalent of human consciousness. I don't wish to enter the fray of arguing points. Dr. Penrose is a mathematical and scientific genius, a deep thinker on the nature of reality, and he can do his own counterpoint. Read this book with an open mind, and even if you disagree with some of his arguments, you will take much away with you.

Here's my take. "Consciousness" is pretty central to the whole enterprise of scientific endeavor, as well as how each of us understands our place in the world. Consciousness, as modeled by psychological and AI researchers, has a lot to say about the biological/physical systems that underpin what is happening in our heads, but one has to wonder about claims that consciousness is now completely understood. To this end, Dr. Penrose takes us on a fascinating journey to the frontiers of scientific knowledge, at scales both large and small. This is entirely relevant to the central theme. Science can only talk about what we can measure, and there are limits to what we can now measure. Our current picture of reality is not as complete as some people would have us believe.

So read Penrose. Read Stephen Jay Gould. Read Raymond Smullyan. Read about the Banach-Tarski theorem. Read about Fermat's last theorem. Read great literature. Keep an open mind. Peace!

Summary of The Emperor's New Mind: Concerning Computers, Minds, and the Laws of Physics

For decades, proponents of artificial intelligence have argued that computers will soon be doing everything that a human mind can do. Admittedly, computers now play chess at the grandmaster level, but do they understand the game as we do? Can a computer eventually do everything a human mind can do?
In this absorbing and frequently contentious book, Roger Penrose--eminent physicist and winner, with Stephen Hawking, of the prestigious Wolf prize--puts forward his view that there are some facets of human thinking that can never be emulated by a machine. Penrose examines what physics and mathematics can tell us about how the mind works, what they can't, and what we need to know to understand the physical processes of consciousness.
He is among a growing number of physicists who think Einstein wasn't being stubborn when he said his "little finger" told him that quantum mechanics is incomplete, and he concludes that laws even deeper than quantum mechanics are essential for the operation of a mind. To support this contention, Penrose takes the reader on a dazzling tour that covers such topics as complex numbers, Turing machines, complexity theory, quantum mechanics, formal systems, Godel undecidability, phase spaces, Hilbert spaces, black holes, white holes, Hawking radiation, entropy, quasicrystals, the structure of the brain, and scores of other subjects.
The Emperor's New Mind will appeal to anyone with a serious interest in modern physics and its relation to philosophical issues, as well as to physicists, mathematicians, philosophers and those on either side of the AI debate.
Some love it, some hate it, but The Emperor's New Mind, physicist Roger Penrose's 1989 treatise attacking the foundations of strong artificial intelligence, is crucial for anyone interested in the history of thinking about AI and consciousness. Part survey of modern physics, part exploration of the philosophy of mind, the book is not for casual readers--though it's not overly technical, it rarely pauses to let the reader catch a breath. The overview of relativity and quantum theory, written by a master, is priceless and uncontroversial. The exploration of consciousness and AI, though, is generally considered as resting on shakier ground.

Penrose claims that there is an intimate, perhaps unknowable relation between quantum effects and our thinking, and ultimately derives his anti-AI stance from his proposition that some, if not all, of our thinking is non-algorithmic. Of course, these days we believe that there are other avenues to AI than traditional algorithmic programming; while he has been accused of setting up straw robots to knock down, this accusation is unfair. Little was then known about the power of neural networks and behavior-based robotics to simulate (and, some would say, produce) intelligent problem-solving behavior. Whether these tools will lead to strong AI is ultimately a question of belief, not proof, and The Emperor's New Mind offers powerful arguments useful to believer and nonbeliever alike. --Rob Lightner

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