On Tue, Oct 6, 2015 at 2:14 PM, Brent Meeker <[email protected]> wrote:
> ​> ​ > QM says that the brains will very quickly (microseconds) diverge. ​You pulled that microsecond figure straight out of the air. Nobody knows exactly how long it would take for quantum indeterminacy to make 2 brains diverge significantly more than, for example, taking a sip of coffee; but I would bet money it would take many millions (if not billions) of microseconds. ​ John K Clark > > On 10/6/2015 10:18 AM, Bruno Marchal wrote: > >> It's not clear to me who is arguing for what. Stathis may think that >>> consciousness is independent of it's physical substrate, but I don't see >>> that he's arguing that here. He's arguing that there can be more that one >>> instance of "the same" consciousness. >>> >> >> Yes, like for example when you are duplicated at W and M, but still in >> the box, before opening the box. There are two instantiation of the same >> consciousness. From the 1p view, the person can be consistently said to be >> unique, at both place at once. Once she opens the door, she get the bit of >> information which differentiate her from her doppelganger. >> > > But this is inconsistent with QM. Your view of conscious thoughts as > instantiated by computation implicitly assumes deterministic, classical > evolution of the brain, so that two identical brains with identical > perceptual inputs will have identical thought sequences, in analogy to two > computers running the same program. As the computations are instantiated > in arithmetic they are necessarily a unity, as there can be only a single > number 2. But QM says that the brains will very quickly (microseconds) > diverge. So if duplication were possible this could provide a test of your > theory - do the duplicate's thoughts diverge even before the door is > opened. Of course duplication of brains or people is not possible - but > duplication of computers is. Computers are deliberately designed to act > deterministically; we want them to instantiate arithmetic, not QM. Yet > they do instantiate QM and although they will not diverge quickly, they too > will diverge. > > Brent > > > -- > You received this message because you are subscribed to the Google Groups > "Everything List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/everything-list. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
