- #106
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Dmitry67 said:1. There are no postulates.
If you still want something, then I can give it in a negative form: you don't need to make any extra assumptions (collapses, particles) to explain the reality. Just pure QM.
So, give me the postulates that define what you name "pure QM".
2. Check my previous post: classical reality is explained ia QD, and a choice of basic depends on the observer
What do you mean by "observer" (I want a definition of "observer" only in terms of the postulates of "pure QM")
3. Do other interpretation give a definition for what "human" is? :) it is an interesting question, but shouldn't it be a part, say, of a biology rather then QM?
Yes, in BM you could define a human based on a certain particle distribution (a human is, after all a collection of molecules of a certain type).
Observer does not play any special role in MWI. Nor the "measurement devices". They are treated the same as all other systems - microscopic or macroscopic. There is no boundary between QM and classical world. World is quantum on all scales, and our classical view is just an illusion.
Well, then define what a "system" is using only the postulates of "pure QM"