SP: 'Getting back to the original question about teleportation experiments, are you saying that it would be impossible, or just technically very difficult to preserve personal identity whilst undergoing such a process? As Brent pointed out, technical difficulty is not an issue in thought experiments. ,

MP: I have answered this, in responding to Brent. In summary I say: if it is just A [any old] rendition of a human you want, then given that thought experiments allow that all practical challenges can be overcome, the answer is Yes! On the other hand if the strict requirement of an exact copy of a particular person is required to be output then it becomes a question of whether or not truly infinite computing power is required to calculate the changes occurring within the original at scan time. If it is then the answer is NO, because infinity is infinity.


I think Derek Parfit's copier [/Reasons and Persons/ Ch 10] was 'usually' producing complete and accurate copies, because one of his scenarios addresses what would happen if there was a fault in the transmission.

Regards

Mark Peaty  CDES

[EMAIL PROTECTED]

http://www.arach.net.au/~mpeaty/





Stathis Papaioannou wrote:






Mark Peaty writes:

SP: 'So given months or years, you really are like a car in which every single component has been replaced, the only remaining property of the original car being the design' MP: Yes, indeed. For the word design here, I prefer to use 'structure', with the proviso that the structure/s we are interested in is/are not just static but some are dynamic. I like to use the word 'construct' [noun] to refer to these things. The kinds of changes occurring may be summarised in a very general sense as of three types: 1/ apparent non-change, which might be really invariant down to the smallest level of measurement, but might also be cases of just oscillation about some average length or volume [say] with no significant topological, charge or mass changes, 2/ cyclical changes in which topology, charge, charge distributions, or mass, whatever, vary in some significant repeating way, and 3/ non-repeating changes which might be manifestations of growth and development, creation of memories, damage from disease or just entropy-the passage of time.

Getting back to the original question about teleportation experiments, are you saying that it would be impossible, or just technically very difficult to preserve personal identity whilst undergoing such a process? As Brent pointed out, technical difficulty is not an issue in thought experiments.

Stathis Papaioannou
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