romsofia
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The conclusion from the FANTASTIC lecture notes by Robert Geroch some 44 years ago called "Geometrical Quantum Mechanics".
There is a lot more information in these notes than what i quote, so go check out the lecture notes, very well written!
There is a lot more information in these notes than what i quote, so go check out the lecture notes, very well written!
Robert Geroch said:In short, the Everett interpretation asks that one take quantum mechanics, as is, very seriously, and learns to live with the resulting picture. One gives up the notion of certain classical possibilities being realized in favor of the introduction of certain regions of configuration space in which the wave function is small. One carries out the same calculations, and transmits the same information, but in slightly different language. One obtains precisely the same description of the Universe that would be obtained by some external observer O. This O, however, would do nothing except look on with satisfaction as the wave function of Universe evolves. We might as well dispense with him. One does not need a classical framework in which to anchor quantum mechanics: one can just let quantum mechanics drift on its own.
Finally, one might object: “All this seems awfully philosophical and rather pointless.” Imagine yourself in the following situation. You wake up one morning to discover that people always talk to each other by saying “In the region of configuration space corresponding to ... the wave function is small.” That’s just the way they always talk. You put up with this very confusing situation for a few days, and finally can’t stand it anymore. You ask a friend to come into see you. You say to him: “I want to reformulate quantum mechanics in such a way that classical possibilities actually occur in the Universe. I want to introduce smaller quantum systems, and observables, and breaks in the chain of instruments, on one side of which classical possibilities are actually realized. I want to modify, along these lines, the interface between quantum mechanics and what human beings actually observe. It is true that, in this program, I cannot provide details of the internal workings of people, but this feature is also common in other areas of physics.” After a pause, your friend replies: “All this seems awfully philosophical and rather pointless.”