It isn't a stupid question, however I am inclined to ask you a counter question of, "Why are you asking?"
Most people never make their way to the screen where you would see this information or care what is on it.
I am just wondering what brought you there in the first place, because changing this setting is more of a means to an end than an end in itself.
If you want to change this setting it must be because you have some sort of problem and you think it would help, which problem is that exactly?