On 27 September 2013 12:18, meekerdb <meeke...@verizon.net> wrote: > On 9/26/2013 4:51 PM, chris peck wrote: > > *"Giving the built-in symmetry of this experiment, if asked before the > experiment about his personal future location, the experiencer must confess > he cannot predict with certainty the personal outcome of the experiment. He > is confronted to an unavoidable uncertainty."* > > And the situations are very different because prior to teleportation there > is one me, waiting to be duplicated and sent to both locations. After > teleportation there are two 'me's, one at either location. That effects the > probabilities, surely? > > > Mainly because it makes "I" ambiguous. One answer would be the > probability of me being in Moscow is zero and the probability of me being > in Washington is zero, because I am going to be destroyed. > > Another answer would be the probability of me being in Moscow is one and > the probability of me being in Washington is one, because there are going > to be two of me. > > Surely this is directly analogous to the situation in the MWI. If I measure a quantum event like a photon bouncing off / through a semi-silvered mirror, the chances of each result is 50%. In "classic" qnautum theory I say there is a 50% chance of seeing the photon reflect, say. In the MWI I do the same, but I am now aware that the probabilities work out as they do because I'm duplicated in the process (or two pre-existing but fungible versions of me have now become distinct - or perhaps 2 lots of infinite numbers of copies...)

Ignoring the teleporter and just looking at the MWI gives the same results but is perhaps a bit more intuitive. In the MWI "I" am also destroyed from moment to moment (or even in classical single-universe physics, if you attach me to a "brain state" it all gets very Heraclitean), and/or I am also duplicated from moment to moment (at least). But the probabilities still work - I have a 50-50 chance of seeing the photon bouncing or transmitting, and equivalently I have a 50-50 chance to end up in Moscow or Washington. It just seems less obvious when I'm the particle in the experiment. -- 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.