As it is a bit of a pet peeve for me when news agencies fail at science, I thought I may as well point out that, in reality, a Schrodinger's cat would not be in a superposition, as it is a large enough object to cause the particle's wavefunction to collapse.
Originally Posted by DuckieHo
You are argue philosophy and my response to that is simply "Proof it".
If you cannot prove the difference between A and B, are they not the same? Which is the copy? If every sub-atomic atom is the same, every energy is the same, and every quanta is the same.... what is the difference? The physical location?
This has been debated before by scientists and there is no "correct" answer. Just Google it..... it comes down to "Do you believe in a soul?"
In scientific terms, what is a copy if two are identical in every way?
If a person walks into a machine and is deconstructed.... and two people walk out.... which is the original? Does the original even exist still?
It's a fallacy to assert that this debate boils down to the existence of a soul (I realise that, for many, it does), especially since such a concept would have no place in a rational discussion.
The far more interesting question here is that of consciousness. Yes, a perfect copy is indistinguishable to any outside observer. However, I am conscious and the copy is conscious. Both will have effectively the same thought processes, yet be separate and, therefore different entities.
To illustrate what I mean, I'd like to go back to your thought problem. If we had 2 exactly identical people, they'd have 2 independently conscious minds and killing one would necessarily kill that entity, even if the 2 are indistinguishable. In short, this teleportation would end a user's consciousness and start a new identical one, which, from the original user's point of view, is death. To disagree on this conclusion would essentially require the premise that 2 identical conscious entities alive at the same time would have to share one consciousness.
Sorry if this is a bit unclear, but it's tricky to convey exactly what I mean.