On 10/26/2012 6:57 AM, Bruno Marchal wrote:
Oh yes, I remember that you did agree once with the 323 principle, but I forget what is your problem with the movie-graph/step-8, then. If you find the time, I am please if you can elaborate. I think Russell too is not yet entirely convinced.

What bothers me about it is that counterfactuals are virtually infinite. So to make the argument go through I think it implicitly requires a whole 'world';

Not really, as here, you can use Maudlin who showed that the conuterfactuals does not require physical activity. In MGA, if you give a role to the conuterfactual, you violate the 323 principle, so that you attribute a functional role in a particular computation to object having no physical activity for the actual computation.

But I'm not sure about the 323 principle in a QM world.


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