I don't usually think sensors in general are stupid, but I almost always think guardians are stupid. They are incapable of making basic mental leaps, and no matter how often it's made clear that what they are doing is stupid, they never catch on. I'm annoyed by their inability to see the big picture, their obsessive attempts to routinize and beat the brains, intelligence, and originality out of everyone, and their obsession with telling everyone what to do. They always have something to say, it's always backward, ignorant, and clearly stupid, and yet they always think they're right.