Anybody who played Doom, or Quake, or Counterstrike knows: if you are not moving, you are dead. And if you try to show a counterexample, and say: "Look, I'm not moving, and I'm alive all right", it's an illusion, because the rockets, grenades, nails, and plasma charges that will slay you are already in flight, you are just failing to see them.
Camping is a viable strategy in many Quake levels, and it is problematic to the point that many servers will kill you if you stay in one place for too long.
