In my opinion, the soul can only be transferred, not copied. The transferred soul is the original one, the duplicated one looks the same, but it is not the original one anymore. Therefore, if the soul transfer method that Chappie discovered is a copy and cut, then Dean, Chappie, and Mommy are all dead. If it was a direct transfer, just copying Mummy's soul at the beginning of the research, then only Mummy is really dead, and Dean and Chappie are still alive.
Regarding copying and pasting, if a person performs soul transfer while asleep, then when he wakes up, he can feel that he is still alive, that is, he has changed his body. If it is copied in the past, and then the soul of the original body is deleted (now the file transfer of the computer is realized in this way), then for the person himself, he is asleep, and he never feels that he wakes up (death) . And the person with the new body, although from the point of view of himself and others, is the same person. Actually there are two of them.
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