The idea of philosophical zombies has something in common with solipsism, which is where everybody else is a zombie, and hey, maybe the universe is a simulation

The idea of philosophical zombies has something in common with solipsism, which is where everybody else is a zombie, and hey, maybe the universe is a simulation too. But the argument against this is that if the universe (and its population) is perfectly simulated, then it's exactly equivalent to real, and that means it is real - or the zombie is a real person, if we're just discussing one "perfectly simulated" person. Otherwise, if the simulation is just very very good, we're talking about something less relevant to arguments.