On the surface, that is what it looks like, but it doesn't really hold up when you think about it.
Most people would never set foot outside of the walls, whether there is a law or not. And it is not like people going outside of the wall carries any risk to the people inside, not when there are ways to do so without opening the gates. So it really begs the question who this law is meant to protect. Plus, it doesn't just outlaw people from going outside the walls. Even just discussing what might be out there, questioning the history we've all been taught or making plans to go there is enough to be executed if the Military Police gets involved.
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Most people would never set foot outside of the walls, whether there is a law or not. And it is not like people going outside of the wall carries any risk to the people inside, not when there are ways to do so without opening the gates. So it really begs the question who this law is meant to protect. Plus, it doesn't just outlaw people from going outside the walls. Even just discussing what might be out there, questioning the history we've all been taught or making plans to go there is enough to be executed if the Military Police gets involved.