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g comments on Affective Death Spirals - Less Wrong

31 Post author: Eliezer_Yudkowsky 02 December 2007 04:44PM

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Comment author: g 04 December 2007 12:58:39AM 0 points [-]

Nick: Oh, sorry, I forgot that there are still people who take the Copenhagen interpretation seriously. Though actually I suspect that they might just decree that observation by a *reversible* conscious observer doesn't count. That would hardly be less plausible than the Copenhagen interpretation itself. :-)

(I also have some doubt as to whether sufficiently faithful reversibility is feasible. It's not enough for the system to be restored to its prior state as far as macroscopic observations go; the reversal needs to be able to undo decoherence, so to speak. That seems like a very tall order.)

Adirian: the fact that their agreement-about-observations was predictable in advance doesn't make it any less an agreement. (And if you're talking only about the parts of those theories that are "theories about the reasons why", bracketing all the agreements about what's observed and how to calculate it, then I don't think you are entitled to call the things that disagree completely "models for modern theoretical physics".)