On 04 Mar 2009, at 07:13, Stathis Papaioannou wrote:
> > 2009/3/4 Günther Greindl <guenther.grei...@gmail.com>: > >> Imagine the sequence: >> >> Scan - Annihilate - Signal - Reconstitute >> >> Now consider that the Signal travels for 100 000 lightyears >> before it hits the reconstitution chamber (just to >> have a big distance, the concern is causal disconnection in >> spacetime). >> >> Now, in the meantime, the reconstitution chamber has been overtaken >> by >> aliens (coming from the other side of the galaxy) who have advanced >> technology and can control the multiverse - they decide the tweak the >> multiverse that the reconstitution happens in _no_ multiverse at >> all (by >> destroying all chambers). >> >> This would suggest that the no cul de sac conjecture implies that >> annihilation in the above sequence fails. >> >> But surely this can not depend on the decision of the aliens, who >> were >> nowhere near the causal lightcone of the annihilation event. >> >> This would imply one of three things (in my view in decreasing >> degree of >> plausibility): >> >> .) no cul-de-sac is false; no QI, even in RSSA scenarios. >> .) annihilation always fails. That is, if a copying machine exists, >> there will always be a version of you which feels that copying has >> not >> succeeded and "nothing happened" (even if you said you wanted to be >> annihilated after the duplication). >> .) COMP obeys global super-selection rules, akin to pre-determinism; >> that is, in scenarios where aliens destroy the chambers, annihilation >> fails, else not. Analogously for other scenarios. > > The no-cul-de-sac hypothesis is false if you allow that there is some > means of destroying all copies in the multiverse. But there is > probably no such means, no matter how advanced the aliens. Indeed, that would be like if a number could make disappear another number. Even a God cannot do that! Bruno http://iridia.ulb.ac.be/~marchal/ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Everything List" group. To post to this group, send email to everything-l...@googlegroups.com To unsubscribe from this group, send email to everything-list+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/everything-list?hl=en -~----------~----~----~----~------~----~------~--~---
