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Just Six Numbers: The Deep Forces That Shape…
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Just Six Numbers: The Deep Forces That Shape the Universe (Science… (original 1999; edition 2000)

by Martin J. Rees

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8091216,347 (3.93)6
Member:tim.dieppe
Title:Just Six Numbers: The Deep Forces That Shape the Universe (Science Masters)
Authors:Martin J. Rees
Info:Phoenix (an Imprint of The Orion Publishing Group Ltd ) (2000), Paperback, 176 pages
Collections:Your library
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Tags:Anthropic Principle, Science, Physics, Astronomy

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Just Six Numbers: The Deep Forces That Shape The Universe by Martin Rees (1999)

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(original review, 2000)

If there was an infinite number of universes wouldn't there be a universe in which a mad scientist had discovered how to destroy all the universes and pressed the button, so there would be nothing at all? But then there would also be a good scientist who devised a plan to stop the mad scientist from pressing the button in the first place! What if they are one & the same, who wins? But as with Madeira Island's Nationalism, the bad scientist would only have to succeed once.

Fine tuning suggests that the Universe is at it is because in effect that's how it has to be therefore the creator is not malevolent. Believers would believe that the Universe is fine tuned whilst atheists would not. Therefore Devil's Advocate likes attributing believers with atheist views to lay a charge of brutality malevolent when in actual fact the malevolent theory is their own. Devil's Advocate has missed the fact that if you don't believe in fine tuning and you don't believe in God then you are laying the blame for random cruelty on evolution. The reverse is not true because believers accept fine tuning:
God + Belief + Fine tuning = No Malevolence (according to Dawkin’s argument);
Atheism + randomness + evolution = Biology professor criticising the welfare state for allowing thick yobs too have too many kids.

So, is there a universe somewhere in which every Tom, Dick and Harry et al are decent talented principled intelligent informed people with nothing but social & environmental good at heart & in action? Ah, well, clearly the multiverse hypothesis has just been irrevocably debunked. Pity. Nah. Nor really. There are definitely multiverses. They exist on the far side of infinity. More importantly, did my cat Ilsa go to heaven? I'm not sure. Maybe she's God in a reverse multiverse. And perhaps (nay, certainly) also a universe in which the multiverse theory does not apply. (*head explodes*) But what do I know. I'm too thick to understand any of this. More importantly: Can Benfica win the Portuguese League this year, that's what I want to know. Sure can. In the universe 3 universes over, they win it with a team made up entirely of dachshunds!

Seriously, the many-worlds interpretation isn't really about the universe splitting per se, the goal is to avoid the problem of wavefunction collapse that is invoked in measurement. The principle of superposition means that we can create states that are, for example, half spin up and half spin down. When we make a measurement of the spin, the wavefunction collapses into only one of these states. However, these measurement processes are qualitatively different from unobserved processes, which allow the wavefunction to evolve smoothly with time. This has led to a lot of discussions about the role of observers in quantum mechanics (Schrödinger's cat, etc.). The basic idea of many worlds is that there is nothing special about measurement. The wavefunction only appears to collapse to the (necessarily quantum) observer, but all possible universes coexist in the same way that the states spin up and down can coexist for the electron. ( )
  antao | Sep 30, 2018 |
I happened across this book when putting away something else. I decided to read it - it's small, and should go quickly. Which it did.
I say 3 and a half stars.
It was an enjoyable read, even if a lot of supporting detail for the numbers and conclusions had to be omitted. I think the book was aimed at people who know less physics than I do. I'm sure it was aimed at people who know less math than I do. I did REALLY like some of the quotes for the chapter headings.
The book was written late in the 20th century, and the author speculated that a lot of open questions in cosmology would be answered within 5 years. It's been 3 times that long, and as far as I can tell, the cosmologists are still debating the answers.
A lot of popular science writers have jumped on the multiverse bandwagon, and I appreciate that this guy makes it clear that the multiverse is one possible explanation, but that other ideas may emerge.
( )
  CarolJMO | Dec 12, 2016 |
You may be familiar with a so called “proof” for the existence of a creator [or do I mean “Creator” (?)] from the apparent design of [his or her] creatures. This argument has been pretty much debunked as it applies to living animals by (1) the theory of evolution and (2) a deep understanding how the phenomenon of emergence can result in complex order arising from randomness despite the second law of thermodynamics. Nonetheless, it does seem as if the earth is very well suited for human life and probably will continue to be so unless climate change deniers prevent sensible people from taking steps necessary to protect our environment.

Indeed, the fact that human life evolved as it did seems to be dependent on the fact that a number of ratios of physical phenomena fall within some very sensitive parameters. Martin Rees, a Royal Society Research Professor at Cambridge University, who was also the official Astronomer Royal of Great Britain, wrote a very interesting book in 1999 that explored the sensitivity of six of those parameters, which he argues are fundamental to modern physics and the known structure of the universe.

Rees observes that each of these ratios has to fall within a very narrow range or, for example (in no particular order): (1) atoms could not have formed after the Big Bang, (2) galaxies could not have formed, (3) the universe would have already collapsed upon itself, (4) the nuclear power generated at the core of the sun would not diffuse outward at just the right rate to balance the heat lost at the surface, and (5) there could be no complex chemistry, atoms larger than helium being unstable.

Although arguing that the universe is spookily “fine tuned,” Rees draws no conclusions as to whether a benign Creator made it so. Other sources like YouTube indicate that he is an atheist. Instead of God, he discusses the cosmological theory of the “multiverse,” the possibility that there are many, if not an infinite number of, other universes that are not as finely tuned as our own. In such a case, the anthropic principal dictates that our universe is finely tuned for human benefit because if it were not, we would not be here!

Evaluation: This book is well worth reading for a lot of reasons. It gives a lucid explication of many physics principles and serves as an excellent introduction to advances in cosmology. I would quibble with the premise that all the constants are “fine tuned,” but his argument that human life depends on several of them falling within narrow limits appears irrefutable.

(JAB) ( )
  nbmars | Oct 25, 2016 |
Science writer and astronomer Rees summarizes the history of the universe, pointing out that six numbers related to basic physical constants (for example, the relative strengths of the gravitational and electromagnetic attraction) determine how the universe developed. In addition, he shows how, if these numbers were only slightly different, stars and galaxies would not form, complex chemistry would not be possible, and life could not evolve. This raises the interesting philosophical question, Why? One could dismiss the question by saying that, if it were otherwise, we wouldn't be here to ask or that there is some underlying theory as yet unknown that would show that these values must be what they are. However, Rees suggests that these numbers were set shortly after the big bang and could well have been different. Indeed, there may be a multitude of other universes, forever inaccessible to us, in which they are different. Thus, with a huge choice of possible universes, one must exist that could support intelligent beings who can observe and question. Whether one agrees or not with Rees's ideas, his book is recommended for its cogent synopsis of modern cosmologic thought ( )
1 vote | MarkBeronte | Jan 7, 2014 |
I wonder if any one here read the same book I did, I found the book to be very readable. I didn't see much of the Intelligent design stuff. it it spoke of it, i would have said it put everything within limits. As general readable text (Brian Green's stuff is sometimes not) I think it is a great book all should read it to learn the rules of the road in cosmology. ( )
  JABorn | Aug 23, 2013 |
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Amazon.com Amazon.com Review (ISBN 0465036732, Paperback)

Just six numbers govern the shape, size, and texture of our universe. If their values were only fractionally different, we would not exist: nor, in many cases, would matter have had a chance to form. If the numbers that govern our universe were elegant--1, say, or pi, or the Golden Mean--we would simply shrug and say that the universe was an elegant mathematical puzzle. But the numbers Martin Rees discusses are far from tidy. Was the universe "tweaked" or is it one of many universes, all run by slightly different, but equally messy, rules?

This is familiar ground, though rarely so comprehensively explored. What makes Rees's book exceptional is his conviction that cosmology is as materialistic and as conceptually simple as any of the earth sciences. Indeed,

cosmology is simpler in one important respect: once the starting point is specified, the outcome is in broad terms predictable. All large patches of the universe that start off the same way end up statistically similar. In contrast, if the Earth's history were re-run, it could end up with a quite different biosphere.

Rees demonstrates how the cosmos is full of "fossils" from which we can deduce how our universe developed as surely as we infer the earth's past from the relics found in sedimentary rocks. Rees's theme is nothing less than the colossal richness of the universe. It is an ambitious book, but if anything, it deserves to be longer. --Simon Ings, Amazon.co.uk

(retrieved from Amazon Thu, 12 Mar 2015 18:19:58 -0400)

(see all 4 descriptions)

"How did a single genesis event create billions of galaxies, black holes, stars and planets? How did atoms assemble - here on Earth, and perhaps on other worlds - into living beings intricate enough to ponder their origins? This book describes the recent avalanche of discoveries about the universe's fundamental laws, and the deep connections that exist between stars and atoms - the cosmos and the microscopic world. Just six numbers, imprinted in the big bang, determine the essence of our world, and this book devotes one chapter to explaining each."--Wheelers.co.nz… (more)

(summary from another edition)

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