Kory Heath wrote:
> Sorry for the long delay on this reply.
> On Nov 2, 2008, at 7:04 PM, Brent Meeker wrote:
>> Kory Heath wrote:
>>> In this mundane sense, it's perfectly sensible for me to say, as I'm
>>> sitting here typing this email, "I expect to still be sitting in this
>>> room one second from now". If I'm about to step into a teleporter
>>> that's going to obliterate me and make a perfect copy of me in a
>>> distant blue room, how can it not be sensible to ask - in that
>>> mundane, everyday sense - "What do I expect to be experiencing one
>>> second from now?"
>> It's sensible to ask because in fact there is no teleporter or
>> duplicator or simulator that can provide the continuity of experiences
>> that is Kory.  So the model in which your consciousness is a single
>> unified "thing" works.  But there are hypothetical cases in which it
>> doesn't make sense, or at least its sense is somewhat arbitrary.
> If something like the many-worlds interpretation of quantum physics is  
> correct, then this kind of duplication is actually happening to me all  
> the time. But I should still be able to ask a question like, "What do  
> I expect to be experiencing one second from now?", and the answer  
> should still be "I expect to still be sitting at this computer, typing  
> this email." If the many-worlds theory simply disallows me from making  
> statements like that, then there's something wrong with the many- 
> worlds theory. But if the many-worlds theory *allows* me to make  
> statements like that, then in that same sense, I should be able to ask  
> "What am I about to experience?" when I step into a duplicating machine.

I think there is a misunderstanding of the MWI.  Although the details haven't 
been worked out (and maybe they won't be, c.f. Dowker and Kent) it is generally 
thought that you, as a big hot macroscopic body, do not split into 
different Korys because your interaction with the environment keeps the Kory 
part of the wave function continuously decohered.  So in a Feynman 
picture, you are a very tight bundle of paths centered around the classical 
path.  Only if some microscopic split gets amplified and affects you do you 

I doubt that it will ever be possible to build a teleporter. Lawrence Krauss 
wrote about the problem in "The Physics of Star Trek".  I'm not sure what it 
would mean for Bruno's argument if a teleporter were shown to be strictly 
impossible; after all it's just a thought experiment.

On the other hand, I think it's probably not that hard to duplicate a lot of 
your brain function, enough to instantiate a "consciousness"  that at least 
thinks it's Kory and fools Kory's friends.  But would such an approximate Kory 
create the ambiguity in the history of Korys that is inherent in Bruno's 


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