like a crosswalk button.
i told my daughter to not push the button going the way we just came from.
i said that we didn't need to go that way, and it may make the light change faster and cost some people a part of their day, if they barely miss the light, because of her action.
the point is, just because there is a button you don't need to push it just because it's there. what might it cost someone else.