Security cameras

The first rule of security cameras is that if you don’t see security cameras, then the cameras are well-hidden.
However, the second rule of security cameras is to make them visible so that people know they are there.
Then there’s the third rule: it’s cheaper to put a sign up that says there are security cameras, even though there aren’t any security cameras.
Because if people can’t see a security camera, they know they must be well-hidden.
Still, it pays to look, because if you’re like me, someone who steals and fences security camera, they can be worth a lot.