Originally posted by Eryk Davis Ester:
One interesting issue is whether the clones would actually be the people cloned, or just a duplicate of them. Since it's confirmed that in the DCU that people have souls that survive their death, to really bring a person back you would need to bring their soul into the new body.
Agreed. We could, if we cared to, clone human beings today, but those clones would just be photocopies of the bodies of the 'donors,' and wouldn't necessarily have any of the personality or life-experience or memories of the original.
Without some means of migrating the mind to the newly grown body, cloning someone to replace them is little different than buying another dog that looks just like the old dog and giving it the same name. It's a mockery, and, if anything, kind of disrespectful to the original.
Karate Kid, in particular, would be pointless to clone. He's a guy, who spent a lifetime developing awesome skills. His DNA doesn't carry that.
Ferro Lad and Chemical King, both declared 'mutants,' would be clonable, but they would be new and different individuals, and I think it would be disrespectful to them to treat them as disposable not-people to be cloned and recycled whenever they die, valued only for their power-sets.
Even with the technology to transmigrate the personality and memories of someone from a failing body to a younger clone, the physical structures of the brain itself change as we grow and develop, and that wouldn't happen in a clone that was force-grown to adulthood. The brain wouldn't perform the tasks that represent the mind in the same manner, and the 'person' would end up being different, possibly taking years before their shiny new brain had adapted to the way they got used to 'doing things' in their old comfortable 'broken-in' brain.
The body would not only have to be cloned, which, frankly, is 20th century tech that should be as relevant to 30th century life-extension / medicine as the abacus is to computer programming, but actually duplicated, down to each cell and axon (which would be simplicity itself, using molecular fabrication technology, which we could have in a century, let alone 10 of them), causing the duplicate body to have a brain precisely 'adapted' to one's own configuration, every freckle and scar in the same places, etc. Then the mind could be transmitted into the new body, and would probably not even notice the momentary 'interruption in service' as it settles into it's new home, and the old body is disconnected from the network and allowed to go into brain-death.
It should be relatively easy, by 30th century scientific standards, if the writers wanted to go that route.
And, even if science can't do that (say, the person died 10 minutes ago and their brain was dead, and the 'data' unrecoverable), Mysa could possibly waggle her fingers and capture the soul, and shephard it into a newly grown body using magic, which scoffs at technological limitations.