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Many Worlds

Print Version July 5th, 2014

Schroedingers cat

The quantum-mechanical “Schrödinger’s cat” paradox according to the many-worlds interpretation. In this interpretation, every event is a branch point; the cat is both alive and dead, even before the box is opened, but the “alive” and “dead” cats are in different branches of the universe, both of which are equally real, but which do not interact with each other.

Sean Carroll argues forcefully for the Many Worlds interpretation of Quantum Mechanics, first articulated by Hugh Everett.

The formalism of quantum mechanics, in this view, consists of quantum states as described above and nothing more, which evolve according to the usual Schrödinger equation and nothing more. The formalism predicts that there are many worlds, so we choose to accept that. This means that the part of reality we experience is an indescribably thin slice of the entire picture, but so be it. Our job as scientists is to formulate the best possible description of the world as it is, not to force the world to bend to our pre-conceptions.

Entry Filed under: Thoughts

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