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La Renaissance du Temps : pour en finir avec la crise de la physique

3.88  ·  Rating details ·  1,318 ratings  ·  128 reviews
La question du Temps est au coeur de toutes les problématiques scientifiques, de la cosmologie à la mécanique quantique.
L’un des plus grands physiciens d’aujourd’hui, Lee Smolin, expose sa conception du Temps et ses implications sur la perception de notre environnement. Le Temps est-il une illusion qui cache une vérité éternelle, ou une réalité physique de notre Univers ?
Unknown Binding, 348 pages
Published 2014 by Dunod (first published April 23rd 2013)
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Feb 07, 2013 rated it really liked it  ·  review of another edition
Recommends it for: People interested in Big Questions
The sense of beauty leads us astray.
- James Joyce, Ulysses
Physics is in a strange state right now. On the surface, things may seem to be going well; the elusive Higgs particle was detected for the first time last year, and there are interesting signs that we may soon discover what dark matter is made of. But on the truly fundamental issues, there has been little progress. Three items in particular stand out. First, our two central theories, quantum mechanics and General Relativity, are each very
Brian Clegg
May 03, 2013 rated it it was amazing  ·  review of another edition
As I write this we are a third of the way through 2013 (time is important here) and I can say with hand on heart this is the best popular science book I have read all year.

Lee Smolin’s book is largely accessible (more on this later) and simply mind-boggling in its scope. What he does here is take on time, and specifically the position of time in physics. Even taken as a simple book on time this is brilliant. The fact is, the majority of books that claim to be about time tell you nothing. It’s st
Manuel Antão
Sep 21, 2017 rated it liked it  ·  review of another edition
Shelves: 2017
If you're into stuff like this, you can read the full review.

Shitty Philosophy and Physics : “Time Reborn - From the Crisis in Physics to the Future of the Universe” by Lee Smolin

“I propose that time and its passage are fundamental and real and the hopes and beliefs about timeless truths and timeless realms are mythology.”

In “Time Reborn - From the Crisis in Physics to the Future of the Universe” by Lee Smolin
Impermanence, Buddhist style?
Buddhism seems to acknowledge the play of opposites I'
Nick Wellings
Jun 04, 2013 rated it really liked it  ·  review of another edition
Lee Smolin's 'Perimeter Institute' in Waterloo Canada sounds like a pretty happening place. Bright young things collaborate on foundational issues in a multimillion dollar purpose built building where the researchers demanded and got full length floor to ceiling blackboards*, glassboards, whiteboards, blackboards in the lounge areas, probably even on the coffee machines and in the toilet cubicles too, which is a good thing I suppose because physics is in trouble and these guys need all the scrib ...more
There is something essential about the Now which is just outside the realm of science.

Smolin argues that time is real, because he experiences it, as a sequence of moments. He claims this is evidence not accounted for in the standard Newtonian paradigm (i.e. Plato's timeless mathematical world). He lumps both Quantum Mechanics and General Relativity under this paradigm, and, as it happens, ALL mathematical models that have time written down as a coordinate system!

Throughout the book, Smolin emp
Apr 12, 2013 rated it it was amazing  ·  review of another edition
This book was extremely tough for me to understand. I took almost 45 days to finish this one simply because I wanted to make sure I understand everything that Lee Smolin was talking about. Some of the concepts were too complex for me and took me few days of web research to process. But on the whole, this book was a philosophical experience for me.

Even though it sounds simple, the whole concept of doing 'Physics in a Box' was mind-boggling to me in the initial chapters. As the chapters went by,
Simon Mcleish
Annoyingly poorly argued book about moving beyond current ideas of time in physics, with some interesting ideas. Smolin spends most of the book discussing the "timelessness" of modern physics, both relativity and quantum mechanics, without ever properly defining what he means by the term. It's clearly not whether the theories have a time parameter in them, but it seems in some places to mean that time is treated as a whole, as it is in the "block universe" of relativity, and in others that the l ...more
Apr 23, 2013 marked it as to-read  ·  review of another edition
Shelves: non-fiction, physics
An interesting talk by Smolin, apparently of the ideas outlined in this book, can be found in this link, with an equally interesting comment by Sean M. Carroll:
Apr 24, 2013 rated it really liked it  ·  review of another edition
. . . on second thought, maybe Smolin is wrong and existing theories were right all along?

The book's not closed on this one yet.
Sep 07, 2013 rated it really liked it  ·  review of another edition
The Controversy

Before I can even begin a review of the book, I do feel that a bit of background must be provided on the scientific context in which this book appears. Smolin is a prominent if controversial figure within the theoretical physics community, well known for work on the cutting edge of our knowledge and promoting that work directly to the general public well before it has become widely accepted within the physics community itself.

Back in the 1990's, he published a work that focused on
Mar 02, 2014 rated it really liked it  ·  review of another edition
Mystics, philosophers, poets and 20th century physicists all agree - time is an illusion. Newton’s laws work equally well with time going backwards, and Einstein showed that time is relative to the motion of the observer. In contrast, this book argues that time is not only real, it is the most fundamental property of the universe. It certainly provides a lot of new ideas to inspire fresh thinking about this subject.

He does a wonderful job of introducing subjects such as thermodynamics or quantum
I'm... not so sure about all this.

I'm going to preface this by saying 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. Also, a major disclaimer: I am not a scientist by any measure, nor am I mathematically adept beyond a high school level. However, I spend most of my time being a general nerd and have decimated the popular science section
Ryan Curry
Mar 08, 2017 rated it it was amazing  ·  review of another edition
Shelves: physics, cosmology
I had been meaning to read this book for quite a while before I finally picked it up. I can confidently say that Lee Smolin is one my favourite authors when it comes to popular topics in physics. He formulates his ideas in a way that I just can't seem to find elsewhere.

I thoroughly enjoyed Time Reborn, and have a lengthy list of other books to investigate thanks to the endnotes and bibliography.

Throughout the book Smolin explores some novel concepts in cosmology and does a very good job bringin
Dec 12, 2013 rated it it was amazing  ·  review of another edition
Recommends it for: anyone interested in modern physics and cosmology
A brilliant contrarian argument against much of the ideology (meta-physics) of contemporary theoretical physics, especially computationalism: the notion that "reality is what math feels like," as Max Tegmark famously put it--the neo-Platonic idea that mathematics is the ultimate reality and that the universe is finally a vast computation from a few simple algorithms. Smolin's underlying argument is that by taking mathematical models derived from isolating physical systems under study from their ...more
David Dinaburg
May 06, 2013 rated it really liked it  ·  review of another edition
Tossing off the word “crisis” is enough of a signifier to fulfill the burden of “shocking-subtitle” that most non-fiction carries. The remainder of the subtitle in Time Reborn: From the Crisis in 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. A theoretical physicist or cosmologist would not be having a first encounter these theories in a pop-sci book, so their ...more
Lee Smolin
Time Reborn

One of the books I am reading in order to gain a deeper understanding of time.

From what I gather, most physicist think that time does not exist. Lee Smolin, on the other hand, thinks this is wrong. “If you are one of the many who believe that time is an illusion, I aim to change your mind. If you already believe that time is real, I hope to give you better reasons for your belief.” I don’t think I fit in either category; I am not a physicist or a cosmologist, I am merely cu
Shane Hall
This review has been hidden because it contains spoilers. To view it, click here.
Jul 29, 2018 rated it liked it  ·  review of another edition
Smolin is a very smart astrophysicist who has won many awards. He has published other books which are deemed influential by Newsweek magazine. Maybe that is why I could not follow his arguments fully.

In essence physics is in trouble. The 2 most successful theories in physics, quantum physics and relativity, have so far not been unproven in science, but they contradict each other. So a new way is needed. Smolin proposed the ‘time is real’ theory. He suggested that there is actually a global time
Peter Mcloughlin
Smolins book is interesting as speculation. Theories about time and space and the big bang and the fate of the universe are fascinating. It is also fun to think about whether space is infinite or finite or whether their was (possibly infinite) time before the big bang. While being even a little curious about cosmology will inevitably lead to these questions at the moment speculations remain speculations. Smolin doesn't like the implications of an infinite universe (I would myself prefer it). He ...more
Randal Samstag
Jan 25, 2016 rated it really liked it  ·  review of another edition
Shelves: philosophy, science
From my blog post on time here:

Smolin’s 2013 book, Time Reborn, covers much the same ground as Adam Frank’s book, About Time, telling the story of why classical physics banished time and (unlike Frank) why it needs to be considered as real. He is in definite opposition to Newton and Einstein’s expulsion of time from physics in their absolute and block universes. He maintains that physics needs to embrace a cosmology that respects the apparent irreversibility of time, the so-called arrow of time
Feb 08, 2013 rated it really liked it  ·  review of another edition
I think Smolin has been hanging out with too many theoretical physicists and philosophers who say funny things like: time doesn’t exist, or, time is an illusion. For the rest of us mortals, a thinning hair is enough proof for the reality of time.

Smolin is not happy with the fact that, starting from Newton, time lost its centrality in physics. It simply doesn’t appear in many representations and formulations of the laws of physics. Even when it does, it doesn’t really do anything other than move
Troy Blackford
This was an interesting book, but I feel like it makes it quite clear why concepts in physics the author doesn't endorse - namely string theory - are more popular with the public than the ideas expressed here: the ideas presented are frequently impenetrable and the writing seems to jump from topic to topic without making it very clear what is meant. I mean, it would probably help if I understood physics better, but that's precisely what I'm saying: it's been easier for me to at least feel like I ...more
keith koenigsberg
Dec 04, 2017 rated it did not like it  ·  review of another edition
Shelves: non-fiction, science
Weak book. His writing is wandering and opaque; he often states as the plain-truth ideas which are actually far from obvious; he often states that he has shown you something ("We have seen") yet it is not clear that he has; and he could have used a good editor. The book is *way* too long with lots of fluff (he spends a lot of time telling you what he's going to tell you); although he thanks two dozen people for proofreading the book for him, I found several errors (errors of logic and errors of ...more
Follow me to LibraryThing, where this review now lives. I'm not an unpaid content provider for Amazon any more. My account is public, look for CSRodgers.
Michael Connolly
This is the best science book that I have ever read!
Zoe Jackson
Some interesting ideas marred by astonishingly sloppy reasoning.
Jul 29, 2013 rated it really liked it  ·  review of another edition
Shelves: physical-science
Lee Smolin's "Time Reborn" is the most thought-provoking book I've read in some time. Its thesis is that considering time to be "real" opens a path towards resolving the famous conundrums of cosmology and theoretical physics: the conflict between quantum mechanics (QM) and general relativity (GR), and how to think about the universe's initial conditions (whatever that means) and why the laws of physics are however they are (whatever that means). I think he makes a very poor case overall, but his ...more
Rodney Harvill
Jun 26, 2017 rated it really liked it  ·  review of another edition
Shelves: cosmology
Many of the laws of physics as we know them are formulated in a timeless manner. In other words, they don't change, and time can be argued to be an illusion. For example, under relativity theory, objects approaching the speed of light experience a slow-down of time, and light itself doesn't even experience time. In other words, everything travels through space-time at the speed of light. All of light's motion is through space, and slower moving objects primarily move through time. In this book, ...more
Andrew MacKie-Mason
The core problem with this book, I think, is that it sets itself up as an argument for the proposition "time is real," when it's really an exposition of the potential scientific fruitfulness of the poetic idea "time is real." Time and its reality do not have consistent meanings throughout the book—which would be fine, if "time is real" were understood as the idea that motivated the various physical theories. But since Smolin sets the book up as an argument for a proposition, the constantly shift ...more
Maggie Wesolowska
“One of the most important lessons that follow once we grasp the reality of time is that nature cannot be captured in any single logical or mathematical system. The universe simply is - or better yet, happens. It is unique. It happens once, as does each event - each unique event - that nature comprises.”

Amazing book about the nature of time. It postulates the idea that time is more real than space itself, and the arrow of time is more fundamental than laws of physics.

The universe as seen by the
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Lee Smolin versus Richard Dawkins 3 18 May 28, 2015 01:58AM  
Science and Inquiry: Time Reborn - Lee Smolin 2 22 Aug 03, 2013 01:02AM  

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Lee Smolin is a theoretical physicist who has made influential contributions to the search for a unification of physics. He is a founding faculty member of the Perimeter Institute for Theoretical Physics. His previous books include The Trouble with Physics, The Life of the Cosmos and Three Roads to Quantum Gravity.
“Whatever is real in our universe is real in a moment of time, which is one of a succession of moments. The past was real but is no longer real. We can, however, interpret and analyze the past, because we find evidence of past processes in the present. The future does not yet exist and is therefore open. We can reasonably infer some predictions, but we cannot predict the future completely. Indeed, the future can produce phenomena that are genuinely novel, in the sense that no knowledge of the past could have anticipated them. Nothing transcends time, not even the laws of nature. Laws are not timeless. Like everything else, they are features of the present, and they can evolve over time.” 2 likes
“Without having navigated waters shallow enough for us to see bottom, we’ll be easy prey to mystifiers who want to sell us radical metaphysical fantasies in the guise of science.” 1 likes
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