I'd add that the devil is in the details of the "copy". To accurately simulate/copy the "sensory experience", you'll have to simulate/copy the entire "observab

I'd add that the devil is in the details of the "copy". To accurately simulate/copy the "sensory experience", you'll have to simulate/copy the entire "observable universe" of the person. Unless you just want to predict the behavior of a person locked inside a solitary, dark, sensory deprived room, the practical implication is that you need to simulate/copy the entire observable universe to run an accurate simulation/copy. And that's not very feasible.