> On 24 Jun 2018, at 21:30, Brent Meeker <[email protected]> wrote: > > > > On 6/24/2018 8:36 AM, Bruno Marchal wrote: >>> On 21 Jun 2018, at 22:19, Brent Meeker <[email protected]> wrote: >>> >>> >>> >>> On 6/21/2018 2:16 AM, Bruno Marchal wrote: >>>>> On 20 Jun 2018, at 00:47, Brent Meeker <[email protected]> wrote: >>>>> >>>>> >>>>> >>>>> On 6/19/2018 8:16 AM, Bruno Marchal wrote: >>>>>>> Most of these objections to CI are answered by decoherence theory. >>>>>> I have no clue how to interpret decoherence with a collapse theory. >>>>> You use decoherence theory until you get to the reduced density matrix >>>>> that is diagonal FAPP (or for all conscious purposes) and then you >>>>> declare it is exactly diagonal and cut the other "worlds" loose. >>>> But why adding that last steps? Why to make the diagonal exact if not to >>>> cut the other worlds? >>> Because if you don't, a further evolution may undo the >>> measurement/perception. >> I know it looks sad, but that is not an argument. In fact undoing some >> measurement/perception might be required for overall consistency, and is >> also a useful quantum gate. >> >> The squared amplitudes can be asymptotical, and get the number zero is not >> always possible, but all what counts is to be relatively small to have >> enough determinism to keep the partial control. > And how much is that?
Enough to get two or three decimals right, like in all sciences. Enough to get a man on the moon, and build electronic microscope. In nanotechnology we might need more decimals correct, and what counts is the probability that the client is satisfied, or the patient cured. Only in metaphysics, we have to reject a theory if the 100^1000th decimal is wrong. Metaphysics has not the notion of “FAPP”, because the purpose is not practical at all. It concerns a possible knowledge only. Bruno > > 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 https://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 https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
