On 12/16/2011 8:42 AM, Bruno Marchal wrote:
If you think of a quantum multiverse, then that argument would work if the brain is a quantum computer. If it is classical, its states can be considered as having been prepared in the classical base,

But "prepared in the classical base" just means decoherence makes the state (approximately) orthogonal to the counterfactual bases. You seem to be assuming that because the brain is quasi-classical, that it doesn't exist in the other branches?


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