On 7/10/2021 2:00 AM, Bruno Marchal wrote:

On 6 Jul 2021, at 22:07, 'Brent Meeker' via Everything List <everything-list@googlegroups.com <mailto:everything-list@googlegroups.com>> wrote:


On 7/6/2021 10:34 AM, Jason Resch wrote:


On Tue, Jul 6, 2021 at 12:27 PM 'Brent Meeker' via Everything List <everything-list@googlegroups.com <mailto:everything-list@googlegroups.com>> wrote:

    And you're never going to find a being that behaves
    intelligently based on information that can be quantum erased.

You need only a quantum computer with enough qubits.

Can you prove that?  How does this quantum intelligence ever arrive at a definite decision?



With a quantum brain, you can hack all credit cards, by running shor algorithm in your head for example.

You argument seems to negate the possibility of quantum speeding. You would be right if P = NP, or something…

No.  As I recall even Shor's algorithm has a probabilistic step so that the answer is only correct with high probability, not certainty.  Quantum speedup is possible, just not quantum definiteness.  One you or your QC decides to act that act cannot be a superposition of actions.  And the decoherence is not just FAPP, it is  inherent in the loss of information across the Hubble boundary.

Brent


Bruno


Brent



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