On 12/23/2011 2:17 AM, Bruno Marchal wrote:
Why? Turing emulability of the physics that supervened on is surely irrelevant.


Unless it plays a role at some level, like you suggest by attributing a physical activity to something which is not used in a branch, but might be used in another branch, for physical reason. In that case, *such* physical acitvity is relevant, and has to be taken into account in the artificial brain, as it will be in the UD.

Although we know that brain processes are approximately classical, they are not strictly classical. So is it Russell's hypothesis that a strictly classical brain, as in Greg Egan's "The Singleton", would obey the 323 principle, but that real brains don't?

Brent

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