On Sat, Dec 28, 2013 at 7:12 PM, meekerdb <meeke...@verizon.net> wrote:
> On 12/27/2013 10:31 PM, Jason Resch wrote:
> To that I would add the purely epistemic "non-intepretation" of Peres
>> and Fuchs.
> "No interpretation needed" -- I can interpret this in two ways, one way is
> to just take the math and equations literally (this leads to Everett), the
> other is "shut up and calculate", which leads no where really.
>>> 2. Determined by which observer? The cat is always either dead or
>>> alive. It's just a matter of someone making a measurement to find out.
>> So are you saying that before the measurement the cat is neither alive
>> nor dead, both alive and dead, or definitely alive or definitely dead? If
>> you, (and I think you are), saying that the cat is always definitely alive
>> or definitely dead, then about about the radioactive atom? Is it ever in a
>> state of being decayed and not decayed? If you say no, it sounds like you
>> are denying the reality of the superposition, which some interpretations
>> do, but then this leads to difficulties explaining how quantum computers
>> work (which require the superposition to exist).
>> Superposition is just a question of basis. An eigenstate in one basis
>> is a superposition in another.
> Can you provide a concrete example where some system can simultaneously
> be considered to be both in a superposition and not? Is this like the
> superposition having collapsed for Wigner's friend while remaining for
> Wigner before he enters the room?
> ?? Every pure state can be written as a superposition of a complete set of
> basis states - that's just Hilbert space math.
So then when is the system not in a superposition?
> The collapse for Wigner's friend can be interpreted either epistemically
> or by MWI.
> Anny: What happened to that poor cat? It looks half dead.
> Erwin: I don't know. Ask Wigner.
> Eugene: I just looked in and it collapsed!
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