Inside Cover Blurb
- 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 new 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.
Amazon Customer Review1
- Physics has encountered a tough problem in explaining why the fundamental constants which define the masses, charges and interactions of particles have the values they do. This impasse, decades in duration, was analysed by Lee Smolin in his 2006 book, "The Trouble with Physics".
- Foremost among attempts at its resolution are schemes containing a plethora of universes, possibly an infinitude, of which our local one just happens to be the way it is; if it weren't we would not be here to wonder about these things. Hardly a falsifiable proposition, and therefore not scientific, as Smolin points out.
- Mind you, his preferred scenario is also replete with universes, though in his universes a selection mechanism is at work which zones in on our particular cosmic environment as a fruitful one for propagation of more universes via black holes. Cosmic "genes" (fundamental constants, initial conditions) that are good for production of black holes are good also for galaxies, stars, planets and, ultimately, us. This theory is at least capable of making predictions which are falsifiable (or not) using available data sources.
- Time is implicit in his hypothetical process. But universal time is associated with the concept of simultaneity which is ruled out by relativity. Smolin and his associates are working on a resolution of this conflict which might, as a bonus, explain non-local aspects of quantum entanglement without invoking the notorious hidden variables which have themselves been pretty well ruled out by clashes with Bell's theorem.
- So far, nothing has come of this approach, though the reality of time is supported by the emergence of complexity in a universe which should by rights be heading for equilibrium. The discussion of how this happens through the intervention of gravity and the effective re-setting of entropy's clock when stars light up is fascinating and rewarding to read.
- But, apart from a few such illuminating insights, this book makes tedious reading. It suffers from poor style, lack of conciseness in presentation of ideas, sloppy diagrams and a great deal of repetition. The epilogue is a rambling discourse upon life, the universe and everything, including subjects as diverse as ecology, economics, moral values, the origin and nature of consciousness - even global warming. Read this section first and you might save yourself an awful lot of time.
In-Page Footnotes ("Smolin (Lee) - Time Reborn: From the Crisis in Physics to the Future of the Universe")
- These vary considerably in their enthusiasm, form 5 to 1 star. This is a 3-star.
Text Colour Conventions (see disclaimer)
- Blue: Text by me; © Theo Todman, 2018
- Mauve: Text by correspondent(s) or other author(s); © the author(s)