On Tue, Oct 6, 2015 at 2:14 PM, Brent Meeker <meeke...@verizon.net> 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 everything-list+unsubscr...@googlegroups.com. > To post to this group, send email to everything-list@googlegroups.com. > 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 everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
