Sadly, physics is political, where different theories have become religions, which seems to be an excuse for a lack of understanding.

The author also talks about the wave function of the whole universe, which is rather meaningless. If I think about tossing a coin 6 times, I can draw a tree diagram showing every possible permutation, but I do not think that the universe has split into 2 universes at each toss. The author is obsessed with the Multi-Worlds theory.

The summary should also itemise what predictions each theory has made, and the numerical accuracy of each prediction against experiment. I would have liked a multi-page summary table at the start, itemising & classifying every theory, together with summaries of their key features, strengths and weaknesses. Clearly the author was paid by the word, as it is over verbose, and at times, the topics merge together in the reader's brain, causing a fog. The book needs more organisation and thought. We are on the threshold of a new understanding-of where we are in the cosmos, and what we are made of. Rarely does a book so fully reorganize how we think about our place in the universe. Step-by-step in Carroll's uniquely lucid way, he tackles the major objections to this otherworldly revelation until his case is inescapably established. The Many Worlds Theory of quantum behavior says that every time there is a quantum event, a world splits off with everything in it the same, except in that other world the quantum event didn't happen. Copies of you are generated thousands of times per second. We just have to accept that there is more than one of us in the universe. Putting his professional reputation on the line with this audacious yet entirely reasonable book, Carroll says that the crisis can now come to an end.

Academics discourage students from working on the 'dead end' of quantum foundations. Science popularizers keep telling us how weird it is, how impossible it is to understand. Quantum mechanics has always had obvious gaps-which have come to be simply ignored. Most physicists haven’t even recognized the uncomfortable truth: physics has been in crisis since 1927. His reconciling of quantum mechanics with Einstein’s theory of relativity changes, well, everything. Already hailed as a masterpiece, Something Deeply Hidden shows for the first time that facing up to the essential puzzle of quantum mechanics utterly transforms how we think about space and time. Sean Carroll, theoretical physicist and one of this world’s most celebrated writers on science, rewrites the history of 20th century physics. INSTANT NEW YORK TIMES BESTSELLER A Science News favorite science book of 2019 As you read these words, copies of you are being created.

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