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Time Reborn: From the Crisis in Physics to the Future of the Universe par [Smolin, Lee]
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Time Reborn: From the Crisis in Physics to the Future of the Universe Format Kindle

3.0 étoiles sur 5 3 commentaires client

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Format Kindle, 23 avril 2013
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Longueur : 364 pages Word Wise: Activé Composition améliorée: Activé
Page Flip: Activé Langue : Anglais

Description du produit

Revue de presse

"[Smolin’s] book, a mix of science, philosophy and science fiction, is at once entertaining, thought-provoking, fabulously ambitious and fabulously speculative." —The New York Times

"Provocative, original, and unsettling." —The New York Review of Books

"Brilliant…Smolin gives what is, for me, the best analysis of the nature of time from a physics viewpoint in a popular science book I have ever seen." —Popular Science

"Smolin provides a much-needed dose of clarity about time, with implications that go far beyond physics to economics, politics, and personal philosophy. An essential book for physicists and non-physicists alike, Time Reborn offers a path to better theory and potentially to a better society." —Jaron Lanier, author of You Are Not a Gadget and The Fate of Power and the Future of Dignity

"Applying his deep mastery of cosmology, quantum mechanics, general relativity and all the diverse attempts at quantum gravity, in Time Reborn Lee Smolin weaves a convincing and entirely new view of reality. He shows us how contemporary physics eliminates time and argues persuasively that any adequate cosmology rests on making time and ‘now’ fundamental." —Stuart Kauffman, University of Vermont, author of At Home in the Universe

"Smolin is an excellent writer, a creative thinker and is ecumenical in the way he covers so many different branches of thought. Even as I mentally argued with this book, I kept on ploughing through to see how Smolin dealt with the objections. I would love to sit down with him over a drink and debate the ins and outs of his theory. And that is how this book should be read: as an account that makes you ask questions." —Nature

"An entertaining, head-spinning and, yes, timely blend of philosophy, science, and speculation to put the Now back into physics." —The Telegraph

"An energetic case for a paradigm shift that could produce mind-boggling changes in the way we experience our world." —Publishers Weekly

"A thoughtful, complex re-evaluation of the role of time in the universe…A flood of ideas from an imaginative thinker." —Kirkus

"With rare conceptual daring, Smolin beckons toward a new perspective for doing cosmological theory…A thrilling intellectual ride!"—Booklist (starred review)

Praise for Time Reborn:
"With rare conceptual daring, Smolin beckons toward a new perspective for doing cosmological theory, a perspective allowing Leibniz’s principle of sufficient reason to open surprising possibilities...A thrilling intellectual ride."—Booklist, starred review


"Smolin makes an energetic case for a paradigm shift that could produce mind-boggling changes in the way we experience our world."—Publishers Weekly


"A distinguished physicist delivers a thoughtful, complex re-evaluation of the role of time in the universe...a flood of ideas from an imaginative thinker."—Kirkus

Présentation de l'éditeur

From one of our foremost thinkers and public intellectuals, a radical new view of the nature of time and the cosmos

What is time?

This deceptively simple question is the single most important problem facing science as we probe more deeply into the fundamentals of the universe. All of the mysteries physicists and cosmologists face—from the Big Bang to the future of the universe, from the puzzles of quantum physics to the unification of forces and particles—come down to the nature of time.

The fact that time is real may seem obvious. You experience it passing every day when you watch clocks tick, bread toast, and children grow. But most physicists, from Newton to Einstein to today’s quantum theorists, have seen things differently. The scientific case for time being an illusion is formidable. That is why the consequences of adopting the view that time is real are revolutionary.

Lee Smolin, author of the controversial bestseller The Trouble with Physics, argues that a limited notion of time is holding physics back. It’s time for a major revolution in scientific thought. The reality of time could be the key to the next big breakthrough in theoretical physics.

What if the laws of physics themselves were not timeless? What if they could evolve? Time Reborn offers a radical approach to cosmology that embraces the reality of time and opens up a whole new universe of possibilities. There are few ideas that, like our notion of time, shape our thinking about literally everything, with huge implications for physics and beyond—from climate change to the economic crisis. Smolin explains in lively and lucid prose how the true nature of time impacts our world.

Détails sur le produit

  • Format : Format Kindle
  • Taille du fichier : 6475 KB
  • Nombre de pages de l'édition imprimée : 364 pages
  • Editeur : Mariner Books; Édition : Reprint (23 avril 2013)
  • Vendu par : Amazon Media EU S.à r.l.
  • Langue : Anglais
  • Synthèse vocale : Activée
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  • Lecteur d’écran : Pris en charge
  • Composition améliorée: Activé
  • Moyenne des commentaires client : 3.0 étoiles sur 5 3 commentaires client
  • Classement des meilleures ventes d'Amazon: n°402.323 dans la Boutique Kindle (Voir le Top 100 dans la Boutique Kindle)
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3.0 étoiles sur 5
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Although I am not a professional physicist, I read a few years ago the book by the same author on string theory. I liked it. Therefore when I started this book on the fascinating subject of time, I was full of hope. Unfortunately I am quite disappointed. This is a bizarre and lengthy mixture of trivialities and ''highbrow" physics, which could have been shortened quite a lot. At the end my "understanding" of what is time has not increased a bit! I think that a "good" writer could have brought more information in less than twenty pages. There are moreover sentences like those related to infinity (see, e.g., "This makes it a bit tricky to say that rarer fluctuations happen fewer times because the ratio of two infinite numbers is ill-defined."), which are of course correct from the viewpoint of elementary mathematics, but are most naïve from a slightly more advanced logical standpoint.
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Faisant écho aux ouvrages de Roger Penrose et de Carlo Rovelli, ce livre est un bon résumé des approches scientifiques actuelles à la notion de temps, ayant comme toile de fond l’incohérence de certains résultats d'expérience en mécanique quantique par rapport à la relativité. L'auteur offre des perspectives innovantes, bases d'un programme de recherche, qui devraient rendre au temps physique son objectivité. Il fournit ainsi au non spécialiste un aperçu de la problématique en cours dans ce domaine et les réflexions d'un scientifique reconnu en physique théorique. Malgré un style clair, le sujet traité exige de la part du lecteur une base de connaissances étendue en physique fondamentale.
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it achieves its objective perfectly well, and builds up the argumentation to give a clear view of how one can derive towards absurdity. It gives the tools to keep a critical mind.
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Commentaires client les plus utiles sur (beta) (Peut contenir des commentaires issus du programme Early Reviewer Rewards) 3.8 étoiles sur 5 161 commentaires
7 internautes sur 8 ont trouvé ce commentaire utile 
4.0 étoiles sur 5 Some interesting ideas 17 mai 2014
Par Mark Bloomer - Publié sur
Format: Broché Achat vérifié
I am a big fan on Lee Smolin. He’s a courageous theoretical physicist who is not afraid to be a pioneer of new ideas and new approaches to physics. I have enjoyed all his books with my favorite being his first “Life of the Cosmos”. In this book, Dr. Smolin argues that time is real and not an illusion as some believe the case may be due to relativity. One of Dr. Smolin’s strongest arguments for the reality of time is that the universe and the world clearly show evidence that evolution has taken place which can only occur if time is real. He believes the universe shows signs of evolution and that black holes are ultimately the seeds to new universes and universes have evolved, through cosmic natural selection, to produce many black holes. He makes some profound statements: “There are aspects of the real universe that will never be representable in mathematics… One of them is that in the real world it is always some particular moment”. He makes some statements that seem to go beyond what we can really be sure about: “The universe has no relation to anything outside it”. Overall, I think this book is a worthwhile read. The only problem I had was that some of the discussions were difficult to tie into the main topic. Keep an open mind when reading this. You will learn a lot about the history of the concept of time from the point of view of theoretical physics.
4 internautes sur 5 ont trouvé ce commentaire utile 
4.0 étoiles sur 5 An interesting view of our mysterious universe 13 janvier 2015
Par Robert Jacoby - Publié sur
Format: Broché Achat vérifié
I don't quite know what to make of this book. I am not a professional scientist; but I have a life-long interest in the sciences (I was a medical writer and/or reporter for 15 years) and learning in the fields of astronomy and cosmology (among others) and how the study of these fields might relate to our understanding of life. What drew me to this book were its high ranking on Amazon in its best seller rank, its high praise from the Amazon and editorial review section, and finally the fact that the author was touching on environmental and economic issues (I was intrigued as to how he would/could tie together a new understanding of time with these seemingly disconnected topics).

Written by theoretical physicist Lee Smolin, Time Reborn takes the reader on a journey from what is currently and generally accepted in the field (Time Is Not Real) to what Smolin proposes (Time Is Real). If you're like me, you'll need to re-wrap your head around the whole Time Is Not Real business before even trying to move on to Smolin's Time Is (Really) Real argument.

Smolin builds the current case that Time Is Not Real by explaining that it has to do with timeless natural laws, theories of relativity, mathematical equations and what they do and do not represent, and thinking from the tiniest level of known matter (quantum mechanics) to the largest level of known matter (the block universe, which is a fancy way of saying that "every moment in time is equally real and so the whole of space and time must be laid out in one unchanging spacetime block" [Pearce, 2012]). (If you're not used to it, thinking like this can stretch your mind to its limits; kind of like thinking about how matter is truly nearly all empty space, at the atomic level.) Smolin then proposes that Time Is Real, explaining that only real time can provide explanations for what he explains as evolving laws of physics.

This is an interesting ride, but along the way I realized that Smolin was cherry-picking his theories. For example, on page 236 he gives short shrift to variable speed of light theories, obviously, because they don't fit what he believes. Smolin believes the speed of light is a constant because he *must have it* be a constant to fit his thinking; not the other way around. If he were open-minded to the data, he would know that, in fact, the speed of light is variable. (It can go at what is nowadays measured at 186,000 m/s. It can be slowed; it can be stopped; and it can be re-started. Scientists have done this multiple times. (Just google "speed of light is stopped.") And, if the speed of light can be slowed....then logically it could also be....sped up. Which is the crux of the variable speed of light theory. Some scientists have done an enormous amount of work to determine if the speed of light was faster in the past, and what this might mean for how we think about the universe, time, and ourselves. If you're interested, google "speed of light was faster in the past" and you'll find some fascinating material. I've looked at the data. It is compelling.) So, Smolin's cherry-picking made me wonder what else he was limiting himself to believing based on his prejudices and pre-conceived notions (his constructed worldview) and then what he did to sieve his information through that to us, his readers.

Still, I liked the book. If you're a serious layman like me, don't be intimidated by the subject matter, the dizzying amount of theories discussed and explained, or the often-used professional language of the professional theoretical physicist author. Read on; plow through. Understand that it simply has to be this way. Smolin tries carefully to explain in detail why Time Is Not Real and then why Time Is Real. I admire him and his book for that and for the added understanding it's given me of the mysterious universe we inhabit.

I liked it:
3/5 Goodreads
4/5 Amazon
9 internautes sur 11 ont trouvé ce commentaire utile 
3.0 étoiles sur 5 Time Unborn 3 novembre 2015
Par Theaetetus - Publié sur
Format: Broché Achat vérifié
The really critical reviewers were expecting far too much from this book. Smolin wasn't promising a new Principia. He makes an interesting case that the reality of time is a productive starting point in forming testable physical hypotheses. But, to be honest, his own speculations are not very compelling, and the principles that inform them are by no means indisputable. (Leibniz does not for most of us bear anywhere near the authority as for Smolin. A lot of us consider him an eclectic and somewhat eccentric second-tier philosopher.) Smolin does not see in his own ideas the Cloud-Cuckoo-Land elements that make engineers cringe and serious philosophers sigh. His hypotheses seem just as far-fetched as many of the theories he criticizes, and, too often, they seem to express no more than his personal prejudice. (That is partly the case for any author, but when those prejudices are proposed as scientific, and yet no firm results are offered, it's a bit harder to swallow.) The "real world" application of his ideas later in the book only contributes to the sense that his physical theories are in many respects driven by his political and cultural passions. I recommend this book not for any solutions it contains, but primarily because it does pose new and interesting questions that may help others to formulate their own views.
2 internautes sur 2 ont trouvé ce commentaire utile 
4.0 étoiles sur 5 An amazing book, with extremely interesting ideas 25 janvier 2016
Par Amazon Customer - Publié sur
Format: Format Kindle Achat vérifié
An amazing book, with extremely interesting ideas. For me the arguments seem to be sometimes too philosophical, nevertheless, not only did I enjoy this book but I'm sure I'll read it again. Thank you!
4 internautes sur 5 ont trouvé ce commentaire utile 
4.0 étoiles sur 5 enlightening, challenging and entertaining 17 juillet 2014
Par Andrew Frank - Publié sur
Format: Format Kindle Achat vérifié
Dr. Smolin lays out a fascinating case for what he labels "temporal naturalism," a fundamental philosophy that appears to be at odds with what most students are taught as a basic tenet of special relativity: the relativity of sumultaneity, which underpins the concept of spacetime and leads to a no-present "block universe" view. The author does a masterful job of presenting complex theoretical arguments in simple, clear terms that make for a highly readable and instructive journey through the mysteries and controversies of contemporary physics. His long personal quest to make sense of apparently paradoxical concepts comes through in the writing, which veers between scientific skepticism and assertions that at times seem passionately strident. As a layperson, I often experienced frustration with arguments that seemed to conflate our intuitive sense of the passage of time with objective universal theoretical constructs, especially in discussions of local versus global phenomena, which often seemed to beg more questions than they resolved. He saves some crucial issues of subjectivity and qualia for the epilogue, and I was left questioning whether the blank-and-white question of time as presented was truly fundamental or tangled in semantic ambiguities and questions beyond the current reach of empirical science. Yet, I would call this a must-read for anyone interested in the philosophy of science and I have tremendous admiration for the brilliance of its author, and appreciation for his devotion to interpreting theoretical physics for an audience of inquisitive amateur philosophers like me.
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