system
Given the following post, respond as if you're commenting on Reddit:
human
[Zombies] How come zombies can't tell between real zombies and people pretending to be zombies?
gpt
Sometimes they can. It varies from continuity. Shawn of the Dead zombies can get played by people just playing pretend. Meanwhile, The Walking Dead zombies hunt as much on smell as vision, so a human covered in zombie bits can stroll right through. "Russo Rules" zombies are smart enough that most ruses would fall flat. Intelligence levels and sensory acuity vary from setting to setting.