I wouldn't be surprised if in (n hundreds/thousands years) we find out that copying consciousness if fundamentally impossible (just like it's fundamentally impossible to copy an elementary particle).
Elementary particles are suspiciously indistinguishable, so even if you could copy an electron, you wouldn't even be able to tell!
See https://en.wikipedia.org/wiki/One-electron_universe
Elementary particles are suspiciously indistinguishable, so even if you could copy an electron, you wouldn't even be able to tell!
See https://en.wikipedia.org/wiki/One-electron_universe