On 12/30/2013 12:04 PM, Jason Resch wrote:




On Mon, Dec 30, 2013 at 2:41 PM, meekerdb <meeke...@verizon.net <mailto:meeke...@verizon.net>> wrote:

    On 12/30/2013 11:17 AM, Jason Resch wrote:



    On Mon, Dec 30, 2013 at 2:00 PM, meekerdb <meeke...@verizon.net
    <mailto:meeke...@verizon.net>> wrote:

        On 12/30/2013 3:09 AM, Bruno Marchal wrote:
But that's essentially everything, since everything is (presumably) quantum. But notice the limitation of quantum computers, if it has N qubits it takes
        2^N complex numbers to specify its state, BUT you can only retrieve N 
bits of
        information from it (c.f. Holevo's theorem).  So it doesn't really act 
like
        2^N parallel computers.


        OK, but nobody pretended the contrary.  You can still extract N bits 
depending
        on the 2^N results, by doing some Fourier transfrom on all results 
obtained in
        "parallel universes". This means that the 2^N computations have to 
occur in
        *some* sense.

        But they pretend that the number 2^N is so large that it cannot exist 
in whole
        universe, much less in that little quantum computer and therefore there 
must be
        other worlds which contain these enormous number of bits.  What Holevo's
        theorem shows is the one can regard all those interference terms as mere
        calculation fictions in going from N bit inputs to N bit outputs.


    Can such "calculation fictions" support conciousness?  That's the real 
question.
     If they can, then you can't avoid many-worlds (or at least many minds).

    Why is that "the real question"?  Saying yes to the doctor implies that a 
classical
    computer can support consciousness.


Because with computationalism, if a quantum computer runs the computations that support a mind, there would be many resulting conscious states, and first person views.

Of course that is assuming the very proposition you're arguing.

That we can only access N-bits of a mind from any one world is irrelevant, as all the conscious states exist in the intermediate states,

That's your story and you're sticking to it.

Brent

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