Take, for instance, efforts to stop surgical mistakes. On the day before surgery, doctors put marks on the patient's body to indicate the surgery to be performed. By so doing, they both avoid performing the wrong surgical procedure and put the patient at ease.
以杜絕手術部位錯誤為例，醫師在開刀前一天，若能先在病人開刀部位預作記號，一來可以防止開錯刀，二來也能讓病人更安心。