I'm not sure that being physically identical to humans is a necessary characteristic of a p-zombie for anything important. If you can produce an ai which _acts

I'm not sure that being physically identical to humans is a necessary characteristic of a p-zombie for anything important. If you can produce an ai which _acts in every observable way as if it were conscious_ without any actual consciousness that would indicate that p-zombies are possible. The current generations of AI don't qualify, but I can see how to get there from here.