‘As you read these words, copies of you are being created.’
So begins the publisher’s description of Sean Carroll’s 2020 book Something Deeply Hidden: Quantum Worlds and the Emergence of Spacetime. If you’ve wondered about quantum mechanics, especially the Many Worlds Interpretation (MWI), this book will clear things up for you in this universe and, possibly, others.
Nature Magazine wrote: “At the beginning of Something Deeply Hidden, Sean Carroll cites the tale of the fox and the grapes from Aesop’s Fables. A hungry fox tries to reach a bunch of grapes dangling from a vine. Finding them beyond his grasp, but refusing to admit failure, the fox declares the grapes to be inedible and turns away. That, Carroll declares, encapsulates how physicists treat the wacky implications of quantum mechanics. Carroll wants that to stop. The fox can reach the grapes, he argues, with the many-worlds theory. “
From the Publisher“As you read these words, copies of you are being created.
“Sean Carroll, theoretical physicist and one of this world’s most celebrated writers on science, rewrites the history of twentieth-century physics. 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. His reconciling of quantum mechanics with Einstein’s theory of relativity changes, well, everything.
“Most physicists haven’t even recognized the uncomfortable truth: Physics has been in crisis since 1927. Quantum mechanics has always had obvious gaps—which have come to be simply ignored. Science popularizers keep telling us how weird it is, how impossible it is to understand. Academics discourage students from working on the “dead end” of quantum foundations. 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. We just have to accept that there is more than one of us in the universe. There are many, many Sean Carrolls. Many of every one of us.
“Copies of you are generated thousands of times per second. 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. Step-by-step in Carroll’s uniquely lucid way, he tackles the major objections to this otherworldly revelation until his case is inescapably established.
“Rarely does a book so fully reorganize how we think about our place in the universe. We are on the threshold of a new understanding—of where we are in the cosmos, and what we are made of.”
From the Reviewers
“Sean Carroll is always lucid and funny, gratifyingly readable, while still excavating depths. He advocates an acceptance of quantum mechanics at its most minimal, its most austere—appealing to the allure of the pristine. The consequence is an annihilation of our conventional notions of reality in favor of an utterly surreal world of Many-Worlds. Sean includes us in the battle between a simple reality versus a multitude of realities that feels barely on the periphery of human comprehension. He includes us in the ideas, the philosophy, and the foment of revolution. A fascinating and important book.”—Janna Levin, professor of physics and astronomy at Barnard College and author of Black Hole Blues
“[A] challenging, provocative book . . . Moving smoothly through different topics and from objects as small as particles to those as enormous as black holes, Carroll’s exploration of quantum theory introduces readers to some of the most groundbreaking ideas in physics today.”—Publishers Weekly
“What makes Carroll’s new project so worthwhile, though, is that while he is most certainly choosing sides in the debate, he offers us a cogent, clear, and compelling guide to the subject while letting his passion for the scientific questions shine through every page.”—NPR
I’m biased, of course, because the MWI is my passion.
