Charles Goodwin wrote:
>I think the only constraint is that the extensions should be physically
>possible, i.e. possible outcomes of the schrodinger wave
>equation. If those are also logical outcomes then fine, but the SWE is the
>constraining factor.

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Why?
You postulate physicalism. Show me your theory of mind, please.
By UDA it cannot be computationalist.
With comp it can be argued that the constraining factors are
only logico-arithmetical. The SWE should be emerging.
We must explain why quantum computation described by "e^iH"
seems, from the point of view of the observer, to supersede
classical computation described by "H".
Bruno