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The beauty is a consequence of their being effective and approximate. Time Reborn – Lee Smolin.
Time Reborn: From the Crisis in Physics to the Future of the Universe
In place of seemingly arbitrarily specified initial conditions, he proposes the evolution of laws. For the rest of us mortals, a thinning hair is enough proof for the reality of time. I feel like Lee Smolin might be a bit of a dmolin hypocrite. In doing this, Smolin will have irritated a whole lot of physicists.
Apr 23, Karl-O marked it as to-read Shelves: Any description of how Nature works is going to have some postulate or rule that does not itself evolve and which is not reciprocally acted upon by what it guides. A symmetry, in the most general sense, is invariance under transformation: I could understand bits and pieces of the book, and found them rather fascinating, like the suggestion that black holes can spawn new universes. And the first sensible explanation of what “global time” means waits until p.
Helge Kragh, the eminent Danish historian of science, has been a particularly vocal critic. All of light’s motion is through space, and slower moving objects primarily smopin through time.
Time Reborn – Lee Smolin
Maybe I could have saved some money by searching places like Ebay etc but that takes time. These aren’t really worth addressing here, but if anyone’s curious about one or more of them, I will happily post details. The book’s not closed on this one yet. Most of us may not need persuading that time is real, but this book goes some way towards explaining why there are those who do. Just new and bad. Jul 02, Zoe Jackson rated it it was ok.
If laws are just one more part of the evolving configuration, and the real law is the meta-law, then don’t we arrive right back at a block universe?
Smolin spends much of the book addressing and attempting to dispel the myth that time is an illusion. The big exception to my praise for his literary style is that he repeats his thesis over and over again, beating you over the head with it. I’m going to preface this by smolkn I was completely whacked out on cough syrup thanks to a miserable month-long cold for almost the entire duration of my listening to the audiobook of “Time Reborn,” and that may have colored my opinions a bit.
Time Reborn by Lee Smolin – review | Books | The Guardian
A wonderful counter to the also excellent works of Brian Greene and Sean Carroll, exponents of the mainstream view on these issues. Smolin has an awesome idea, first printed in his excellent book The Life of the Cosmos. So I can just barely imagine how something like CDT might arise through geometric habit-formation. Time, instead of being an obedient servant of the laws that sit outside time, becomes reobrn master. Retrieved August 19, — via Time Reborn website.
Tme dimensionless time is dimensionless spacetime. T waves away my objections; evidently, he is talking about a fairly large teaspoon. One standard method of scientific research involves experimentation in a carefully controlled isolated environment in order to measure responses to very specific perturbations.
Time Reborn by Lee Smolin – review
From my blog post on time here: If there is to be a global time, does it necessarily have to be one picked out by the shape dynamics argument? Some physicists have proposed that time, like temperature, is meaningful only in the macro world but not relevant at the Planck scale.
Susskind says he is. For a relationist, there is no background of absolute space and time. Therefore its a good thing in a way that the book has not one equation in it as far as I could see. I would like to say that I was immediately attracted by the elegance of the scheme, but that would not be true. The basic premise here is that time is constant, and space is emergent.
Either we are in a special place, or the universe itself is expanding and it will look similar from every point in space. From the Crisis tkme Physics to the Future of the Universe has the potential to be more egregiously hyperbolic but for the fact that most readers are unlikely to be current on the cosmological scuttlebutt.
I have read several books over the last few years by people who have a different take on these issues.