Consider most of the objects you use on a typical day. Almost all of them use cautionary labels in order to avoid liability: pain and sensitivity may occur when using a certain brand of toothpaste, medications have possible side effects and may cause drowsiness or dizziness, alcoholic beverages caution against operating a vehicle under the influence, plastic bags have suffocation warnings, tampon boxes contain a pamphlet on toxic shock syndrome, etc.  All of these labels pertain to circumnavigating bodily harm.