@tillianisafox This is possibly the deepest philosophical rabbit hole you can go down, not recommended at all lol
The idea is that your consciousness is just a kind of information processing that if uploaded (with the original presumably destroyed) would be you, heck you don't cease to exist when your brain is temporarily unconscious like under anesthesia.
But if you go into cloning while keeping the original, that's when the paradox appears.
In the end we have no freaking idea.
@tillianisafox Some try to dismiss it via quantum mechanics, because if that's indeed needed for consciousness to arise somehow, then you physically can't make perfect copies, you can only transfer the information one way. But that's very mystical and it's not clear how it would even work, because even a single neuron is at macro scale compared to this.
Maybe the split consciousness somehow diverges, but if both instances could've been valid, how does the spooky action at a distance happen?