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Just had four quick questions on the Copenhagen Interpretation (CI).

1. Where is the boundary between realm (classical) space and quantum space. I understand that there is no solid definition for this boundary, but where would we begin to see quantum events occur and see classical events stop? According to Everett, why are there two contradictory conceptual schemes to describe reality - the quantum one of wave functions and the classical one with us and the measuring device.

2. What is an observer? Can it be just another particle, or must it be conscious?

3. Why do wave functions collapse when observed?

4. Why is there an abrupt, random change in the wave function, which violates the Schrodinger equation?

I was wondering what the answers were to these questions after reading a Scientific American article on Hugh Everett. Sorry if these questions seem dumb, but I'm a newbie to quantum mechanics, so I hope to learn. Thanks :)

1. Where is the boundary between realm (classical) space and quantum space. I understand that there is no solid definition for this boundary, but where would we begin to see quantum events occur and see classical events stop? According to Everett, why are there two contradictory conceptual schemes to describe reality - the quantum one of wave functions and the classical one with us and the measuring device.

2. What is an observer? Can it be just another particle, or must it be conscious?

3. Why do wave functions collapse when observed?

4. Why is there an abrupt, random change in the wave function, which violates the Schrodinger equation?

I was wondering what the answers were to these questions after reading a Scientific American article on Hugh Everett. Sorry if these questions seem dumb, but I'm a newbie to quantum mechanics, so I hope to learn. Thanks :)

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