Not clear to me that different internal structure with no observable external differences are relevant. Something that has all the external behaviour/interactions of diamond (functionally identical), but a different internal composition is for all practical purposes, diamond.
I think there’s a missing hypothesis here (it probably seemed obvious to you but is very not obvious to me).
The missing hypothesis is something like:
There are purely internal dynamics/structure with no differences in external behaviour/interactions (epiphenomena) that we care about.
I reject that hypothesis. Accepting that hypothesis is accepting zombies.
Not clear to me that different internal structure with no observable external differences are relevant. Something that has all the external behaviour/interactions of diamond (functionally identical), but a different internal composition is for all practical purposes, diamond.
I think there’s a missing hypothesis here (it probably seemed obvious to you but is very not obvious to me).
The missing hypothesis is something like:
I reject that hypothesis. Accepting that hypothesis is accepting zombies.