On Mon, Dec 30, 2013 at 2:00 PM, meekerdb <meeke...@verizon.net> wrote:

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> On 12/30/2013 3:09 AM, Bruno Marchal wrote: > > But that's essentially everything, since everything is (presumably) > quantum. But notice the limitation of quantum computers, if it has N > qubits it takes 2^N complex numbers to specify its state, BUT you can only > retrieve N bits of information from it (c.f. Holevo's theorem). So it > doesn't really act like 2^N parallel computers. > > > > OK, but nobody pretended the contrary. You can still extract N bits > depending on the 2^N results, by doing some Fourier transfrom on all > results obtained in "parallel universes". This means that the 2^N > computations have to occur in *some* sense. > > > But they pretend that the number 2^N is so large that it cannot exist in > whole universe, much less in that little quantum computer and therefore > there must be other worlds which contain these enormous number of bits. > What Holevo's theorem shows is the one can regard all those interference > terms as mere calculation fictions in going from N bit inputs to N bit > outputs. > Can such "calculation fictions" support conciousness? That's the real question. If they can, then you can't avoid many-worlds (or at least many minds). Jason > It is conceptually no different than doing a calculation in ordinary > probability theory: I start with some initial conditions and I introduce a > probability distribution and compute a probability for some event. In that > intermediate step I introduced a continuous probability distribution which > implies an *infinite* number of bits. Nobody thinks this requires an > infinite number of worlds. > > 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/groups/opt_out. > -- 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/groups/opt_out.