Either we define “belief” as a computational state encoding a model of the world containing some specific data, or we define “belief” as a first-person mental state.
For the first definition, both us and p-zombies believe we have consciousness. So we can’t use our belief we have consciousness to know we’re not p-zombies.
For the second definition, only we believe we have consciousness. P-zombies have no beliefs at all. So for the second definition, we can use our belief we have consciousness to know we’re not p-zombies.
Since we have a belief in the existence of our consciousness according to both definitions, but p-zombies only according to the first definition, we can know we’re not p-zombies.
Either we define “belief” as a computational state encoding a model of the world containing some specific data, or we define “belief” as a first-person mental state.
For the first definition, both us and p-zombies believe we have consciousness. So we can’t use our belief we have consciousness to know we’re not p-zombies.
For the second definition, only we believe we have consciousness. P-zombies have no beliefs at all. So for the second definition, we can use our belief we have consciousness to know we’re not p-zombies.
Since we have a belief in the existence of our consciousness according to both definitions, but p-zombies only according to the first definition, we can know we’re not p-zombies.