For the record, the reason to ask whether zombies are logically possible is that if a thing can be present in the real world, but not present in a logically possible world, it is then meaningful to ask about the nature of the thing that differs between the two cases.
As long as you’re recording, can you also explain the reason to ask about the nature of the thing that differs between a conscious system in the real world (A) and its logically possible physically identical nonconscious analog in the zombie world (B)?
Relatedly: if it turns out that no such B can exist in the real world even in principle, what depends on the nature of the thing that differs between A and B?
As long as you’re recording, can you also explain the reason to ask about the nature of the thing that differs between a conscious system in the real world (A) and its logically possible physically identical nonconscious analog in the zombie world (B)?
Relatedly: if it turns out that no such B can exist in the real world even in principle, what depends on the nature of the thing that differs between A and B?