system
Given the following post, respond as if you're commenting on Reddit:
human
[Walking Dead] How come the group doesn't use Michonne's technique?

Why don't the group use Michonne's walker trick more often? For example, at the prison they could keep a bunch of them surrounding the fences. I remember someone saying that they ward off other walkers and it could have kept them away from the fences.
gpt
They don't ward off others. They just let you pass through because other zombies assume you are one of them. If you had loads tof them outside the prison, more would come and eventually you'd have a herd.