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You don't really get rid of the superposition. What happens is that the system gets entangled with the environment. This makes the system behave as if it were described by classical physics, but in reality it is still a quantum mechanical system and the superpositions are still there albeit hidden due to the entanglement with the environment. If the cat is ...


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Quantum mechanics says there is a superposition. There is no reason to doubt QM on this point. The quantum processes of entanglement and decoherence make it impossible for us to be aware of the superposition. We will only be aware of one alternative, which fits well with our experience.


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Schroedinger's cat is one of the worst examples of scientific visualization. It is deceptive in that it pretends that a cat (on the time and temperature scale of the observer) can be treated as a quantum system. Moreover, it pretends that state superposition is an objective quantity of the quantum system, when, in reality, it's merely a statement about the ...



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