They base it on experiences with people they have had in the past
I am pretty sure the answer is yes, they do.
Gently clean the cut by wiping away blood or dirt with little water and diluted antibacterial liquid soap. Treat with antibiotic ointment. Carefully apply an over-the-counter (OTC) antibiotic cream, such as bacitracin, to minor cuts. Idk-
Tell the person stop driving, find someone else to drive or you dive yourself
What don't you understand?