keithprosser3 wrote:
'The being able to see it happening' version IC mentioned is a useful one and I am glad IC believes 'I' is preserved even under those conditions, but I don't know why he thinks its important that the same atoms are used, as (apocryphally) we are supposed to all change our atoms every few weeks (or is it days?) anyway.
I didn't mean that using different atoms would change the situation.
Rather, I offered two separate thought experiments. In the first one, you are being disassembled in place A and reassembled in place B (from the same or a different set of atoms). The question is whether the reassembled person is still you.
The second thought experiment is the same, except that you are not being disassembled at all, but rather you watch yourself being assembled in place B from different set of atoms. As far as I can see, this thought experiments shows that the person being reassembled in place B is not
you, since in this thought experiment you are still standing in place A.
keithprosser3 wrote:
But suppose what IC could see being reproduced did not resemble him, even if the same atoms were used? How much distortion would be acceptable, and what type of distortions? What about a distortion that left IC (or IC v2.0) looking the same but with a different personality? Or vice versa, that is with an unchanged personality but looking different? Which of those distorted copies would be closer to being the original DI? Would either distortion be preferable to a version that was physically (and mentally) identical to the original but made of different atoms?
Put starkly, if the only way out of a burning building was to teleport out, which way would IC rather end up: looking different, thinking different or made of different atoms?
I think that identity cannot be scientifically established. That is, if you are taken away by aliens to planet X, and at the same time you are replaced by an exact copy, no objective measure could ever establish that your replacement is not you. Objectively, nothing would change on planet earth, but from your subjective perspective, everything has changed, you are on a new planet and someone who looks like you has taken your old place.