The Hidden Reality: Parallel Universes and the Deep Laws of the Cosmos
There was a time when “universe” meant all there is. Everything. Yet, in recent years discoveries in physics and cosmology have led a number of scientists to conclude tha...more
I'm sure it must be very difficult for an author of a popular science book to walk the line between, on the one hand, providing enough technical information to make the arguments cogent, and on the other, miring the reader in a bog of difficult concepts and facts. My hat's off to Dr. Greene for giving it a try on some of the most out-there ideas that can be imagined.
Some very interesting ideas, but ultimately, for me this was al...more
This book is about different concepts of the Multiver...more
Greene is a terrific reader (I listened to the audiobook and therefore didn't have to deal with footnotes). I'm going to see if our library has his other books in Overdrive downloadable format. This is the second overdrive boo...more
7. Science and t...more
"The ultimate multiverse takes this perceptive to its furthermost incarnation; mathematics, according to the ultimate multiverse, is reality."
Theory that is not experiment on, is still theory until proven. But by the nature of the theory that it is not possible to experiment on, then we have to find some ways. Before this happened, it is the maths that prove the theory to us.
Chapter 4 on Unifying Natural laws have already been covered in other books. The branes...more
The first half of the book is more or less rehashing the stuff I'd read in the first two books. Even some of the second half was familiar.
Greene's descriptions of entropy as a tool for understanding physical phenomena and theory is just as interesting as it was in the second book. It still boggles me a bit how a concept can be used as a fairly precise tool. Precise...more
And when I say multiverse, I actually mean multiverses. Greene gives a wide range of possible ways this may come about. I think the quilt has some merit, and like I said, even branes come out of it with some common sense.
Even if you aren't big on the math, you will easily foll...more
The Elegant Universe and The Fabric of the Cosmos here treats all viable alternate realities to a laudably fair shake. For a book exploring the most far-reaching implications of bleeding-edge mathematics, The Hidden Reality is surprisingly light on math, written as it is "for a broad audience ... its only prerequisite the will to persevere." Such perseverance pays off with a motley cast of potential universes featuring doppelgängers, strings, branes, quantum probabilities, hol
Additionally, the book is very well written. Greene writes with an effortless, clear prose, a logical progression from idea to id...more
Here he tackles the most mind-blowing aspect of cosmology: the fact that the mathematical unfolding of every cosmological theory today leads unfailingly to the idea that we are but one in a (usually) infinite collection of universes, collectively r...more
Greene can be clear, easy to understand, and even near-eloquent in explaining all the different types of multiverses. (I'll admit, though, that the details of how a quantum tunneling multiverse could work aren't 100 percent clear still.)
That said, there are some issues with the book.
First, on the "simulations multiverse" chapter, Greene naively claims that "sims" inside a universe could always figure out, eventually, that they were sims....more
In More Detail
If you enjoy reading books that try to explain science on a layman's level, then you might want to consider this book. Especially, if you have a fairly basic understanding of physics and/or have read other significant books in this genre such as Stephen Hawking's excellent book A Brief Hist...more
In the nine different multiverse theories discussed here, the underlying theme - as discussed towards the end - is that the only thing that does not make sense is why our universe can not be unique and special, the way our galaxy, sun or earth are not. The theor...more
In this book, he introduces readers to several themes of modern physics and cosmology, all centering around the seemingly infinite universe about us -- the "quilted multiverse", the inflationary multiverse, string theory and the multi...more
I said yes.
I didn't get the book back for several years, Dr. Greene had written more by then. Oh well.
This book (as is Dr. Greene's wont) is an attempt to take highly technical and advanced ideas and make them understandable to "us", "we", "the great unwashed", "the masses". I suppose i...more
One of the more interesting theories to me is the Quilted Multiverse.
An infinite universe can be divided into a series of spherical patches each the size of the cosmic horizon. The cosmic horizon is the distance that light c...more
From what I can retain, any of these can explain/predict multiple universes:
- cosmologically equivalent from alternative (or nested) cosmic expansions, with different or similar cosmological constants
- string-theory's Brame (membranes) in retreat or in variable contact with one-another
- probabilistic diverting streams from quantum theory's concept of indeterminate presence frozen into place upon detection, leaving o...more
From the last chapter,
Table 11.1 Summary of Various Versions of Parallel Universes
1. Quilted Multiverse: Conditions in an infinite...more
The book was a very smooth read for me, being someone who is comfortable with mathematics and science. All of the concepts and theories put forth in this book were things I had encountered before (via Through The Wormhole, in particular), and I feel that it greatly helped me to visualize what was being discussed, having se...more
Take any of physics' major theories of the fundamental nature of the universe, extrapolate its math to the logical extreme, and you get some version of a (so far unobservable) parallel universe. And who better to navigate these hypothetical versions of the "multiverse" than Brian Greene? Normally an unflinching apologist for string theory, the bestselling author of The Elegant Universe and The Fabric of the Cosmos here treats all viable alternate realities to a laudably fair shake....more