Is it impossible or do we just not have the technology required?
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Humans are more than just the sum of their parts, all life is.
Yes, you can know it’s mostly water with some fats, proteins, calcium and a few other composite elements, but so is a nice stew. Knowing somethings components is different than being able to arrange them into a living structure.
Arranging it all into a useful form requires manipulating and controlling for millions of factors. Things like enamel in teeth cannot even be fully replicated now and that’s not even technically alive and pretty much a rock but requires specialized cells to arrange the magnesium and calcium in just the right way.
So if there were a way to have a unit of control that can manipulate and process millions of different things at the atomic and microscopic level, it would be possible, but at that point it’s essentially building something so complex it’s essentially science fiction.
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