A lot of times you are doing something, and you don't know the consequences of your action, maybe, it can break your arm, or it can send you to the hospital; but when people tell you an example it will let you know the actions; for example, if you are listening to music very loud, you couldn't know that it can make your ears very bad, but when people tell you turn the music down, my sister's ears are very bad because she was listening to music very loud; after that you know that you better stop doing that, because it will bring you very bad consequences, and you do not want that, so you would stop.