One big difference is that there are theoretical cracks in the lightspeed wall that don’t have any go-to-another-quantum-world analog.
In that case the conclusion would be that we don’t know whether or not galaxies outside of the light cone exist and whether or not they exist depend on whether the theoretical cracks actually allowing faster-then-light travel.
Eliezers position seems to be that they exist whether or not faster-then-light travel is possible.
Or are you saying that in a world where a person is certain about all physical laws that exist and there’s no faster-then-light travel, the other galaxies don’t exist for that person while they do exist for people with less knowledge about physics?
In that case the conclusion would be that we don’t know whether or not galaxies outside of the light cone exist and whether or not they exist depend on whether the theoretical cracks actually allowing faster-then-light travel.
Eliezers position seems to be that they exist whether or not faster-then-light travel is possible.
Or are you saying that in a world where a person is certain about all physical laws that exist and there’s no faster-then-light travel, the other galaxies don’t exist for that person while they do exist for people with less knowledge about physics?