A person without knowledge of what is inside of a wall or why it could be a problem may indeed try to use a 6" nail to hang their picture. There are plenty of

A person without knowledge of what is inside of a wall or why it could be a problem may indeed try to use a 6" nail to hang their picture. There are plenty of people that don't understand(and probably don't want to understand) how things are connected. I doubt they think that the light switch magically turns on the light, or that the water magically comes from the valve attached to the wall, but the method, or desire to know the method, in which those things happen is just not in their world.