If the other universe(s) are simulated inside our own, then there may be relevant differences between the simulating universe and the simulated ones.
In particular, how do we create universes identical to the ‘master copy’? The easiest way is to observe our universe, and run the simulations a second behind, reproducing whatever we observe. That would mean decisions in our universe control events in the simulated worlds, so they have different weights under some decision theories.
I assumed we couldn’t observe our copies, because if we could, then they’d be observing them too. In other words, somebody’s experience of observing a copy would have to be fake—just a view of their present reality and not of a distinct copy.
This all follows from the setup, where there can be no difference between a copy (+ its environment) and the original. It’s hard to think about what value that has.
If the other universe(s) are simulated inside our own, then there may be relevant differences between the simulating universe and the simulated ones.
In particular, how do we create universes identical to the ‘master copy’? The easiest way is to observe our universe, and run the simulations a second behind, reproducing whatever we observe. That would mean decisions in our universe control events in the simulated worlds, so they have different weights under some decision theories.
I assumed we couldn’t observe our copies, because if we could, then they’d be observing them too. In other words, somebody’s experience of observing a copy would have to be fake—just a view of their present reality and not of a distinct copy.
This all follows from the setup, where there can be no difference between a copy (+ its environment) and the original. It’s hard to think about what value that has.