Una fortuna cosmica. La vita nell'universo: coincidenza o progetto divino?

by Paul Davies

Hardcover, 2007

Status

Available

Publication

Mondadori (2007), Hardcover

Description

Physicist Paul Davies shows how recent scientific discoveries point to a perplexing fact: many basic features of the physical universe--from the speed of light to the most humble carbon atom--seem tailor-made to produce life. A radical new theory says it's because our universe is just one of an infinite number of universes, each one slightly different. Our universe is bio-friendly by accident; we just happened to win the cosmic jackpot. While this multiverse theory is compelling, it has bizarre implications, from infinite copies of each of us to Matrix-like simulated universes. Davies believes there's a more satisfying solution to the question of existence: the observations we make today could help shape the nature of reality in the remote past. If this is true, then life and, ultimately, consciousness aren't just incidental byproducts of nature, but central players in the formation of the universe.--From publisher description.… (more)

User reviews

LibraryThing member fpagan
Davies gives an up-to-date account of cosmology and particle physics in order to present the possibilities that the universe's fitness for life is (1) a fluke or (2) the result of observer selection from a multiverse (the anthropic principle). He most wants us to know about John Wheeler's idea that
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(3) "the universe has engineered its own self-awareness through quantum backward causation or some other physical mechanism still to be discovered" (p 250). The brilliance of his writing is compromised only by his failure to see that the nonsensicality of theology is *total*.
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LibraryThing member jbennett
This another book that takes you through the history of the universe and addresses some of the relevant fundamental particle physics and unification theories. The latter part of the book is more interesting where he discusses the multiverse theories and brings in some discussion of where God fits
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into this.
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LibraryThing member brakketh
Well written popular science going through a number of interesting ideas in cosmology in lay-person terms.
LibraryThing member Miro
Davies discusses modern physics and summarizes scientists views on why the universe is so perfectly set up to enable life (and consequent intelligent understanding). Only the slightest modifications of the laws of physics would make life impossible so why does it exist if the probabilities are
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enormously against it?
The general tendency is to avoid the issue, but answers range from a multiverse in which ours is the lucky one among the many (or infinite number) that aren't, to a self aware intelligent universe generating suitable laws (in the future) with backward causation effected by manipulating time in some unknown way.
He sees human (or consequent machine) intelligence as a fundamental force in its own right, at the moment in a very early stage, but capable of growing over future hundreds of millions of years to a galactic scale. He quotes the idea that a future intelligence altering the functioning of the sun would generate errors for a distant observer that would seem to indicate a failure of physical laws.
Backward causation, or at least selection of outcomes, is supported by Wheelers variant of the two slit light wave/particle experiment and he favours an unknown mechanism behind this by which the future selects between the myriad of past and present possibilities to "enable" itself. Optimum physical laws are then not a "Cosmic Jackpot" but rather a calculated and selected necessity.
A tremendously good and thought provoking book.
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LibraryThing member TheCrow2
First half of the book's a good introduction into quantum physics and cosmology. The second half's much more interesting and abstract. WHY aren't the laws of physics different than we notice? If we believe int the multiverse do you HAVE to believe in God? It become a little too philosophical for me
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at the end but nonetheless interesting and thought-provoking book.
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LibraryThing member mbaland
Davies sees some amount of wonder at the bio-friendliness of the universe. Is it just random chance that our universe got it right on the first go? Is there a multi-verse or a bunch of universes, only those of which have observers are observed? Are there an infinite number of universes, or even
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fake universes? Did God do it? Did the universe create itself? Is life and mind an integral law of the universe?

Such questions Davies seeks to answer. It doesnt seem that he satisfactorily answers them for himself, but the journey provided in the book is very explicative and enlightening. He ends up near the camp that the universe is inextricably interwoven with life, and that it is probable that the universe caused its own existence through some sort of quantum (or other?) mechanism.

Regardless of one's assumptive answer to the above questions, much of one's suppositions is based on faith. Faith in the universe, faith in God, faith on unobserved theoretical physics....its turtles all the way down; pick your super-turtle.
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Language

Original publication date

2006

Physical description

367 p.; 8.58 inches

ISBN

8804571675 / 9788804571674

Local notes

anteprima:
http://books.google.it/books?id=5WAsvLbx_qgC&printsec=frontcover&hl=it#v...

Per millenni gli uomini hanno osservato il cielo pieni di meraviglia, chiedendosi: perché siamo qui? Come ha avuto origine l'universo? E che senso ha la nostra esistenza nel cosmo? Fino a tempi recenti, la risposta a questi grandi interrogativi è stata appannaggio di preti e filosofi, ma oggi gli scienziati stanno cominciando a intervenire nel dibattito, con idee che sono insieme sorprendenti e profondamente controverse. Come ci racconta con chiarezza Paul Davies, le recenti scoperte scientifiche mettono in luce un fatto che lascia perplessi: molte caratteristiche fondamentali dell'universo fisico - dalla velocità della luce alla struttura dell'atomo di carbonio - sembrano calibrate in modo apparentemente miracoloso per permettere l'esistenza della vita. Spostamenti anche minimi nei valori di queste costanti potrebbero dare luogo a universi altrettanto fisicamente sensati del nostro, ma senza alcuna speranza di ospitare qualcosa di simile a uomini, piante e animali. Com'è quindi possibile che, di tutti gli universi, ci sia capitato in sorte proprio l'unico che sembra fatto su misura per produrre la vita? Abbiamo forse vinto una sorta di lotteria cosmica, il cui premio era la nostra stessa esistenza? Una teoria radicalmente nuova afferma, per esempio, che esistono davvero tutti gli universi possibili, ognuno dei quali è leggermente diverso dagli altri, e che si tratta di un caso se proprio il nostro, tra gli innumerevoli mondi paralleli, è risultato così favorevole alla vita. Ma secondo Davies la semplice statistica non può risolvere davvero l'enigma della nostra esistenza. Il fatto che il nostro universo abbia prodotto una forma di vita capace di consapevolezza e in grado di comprendere le leggi fisiche che lo governano non può essere solo una questione di fortuna, per quanto cosmica: il sospetto, allora, è che ci sia una trama più profonda, forse il dispiegamento di un progetto, se non, addirittura, l'intervento di un'entità superiore. Componendo in modo rigoroso ma vivace un quadro divulgativo delle maggiori teorie cosmologiche, Davies passa in rassegna tutte le risposte scientifiche all'enigma della nostra esistenza, compresa quella per la quale lui stesso propende, ma mette anche in evidenza come la scienza non abbia trovato la spiegazione definitiva che cerca da sempre, lasciando per il momento (ma per quanto tempo ancora?) senza conclusione certa questo dibattito millenario.
(piopas)
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