Imagine you are in the hospital for surgery to repair your broken ankle. Normally the nurse will start mild sedation before you are taken to the OR but she was late, so you wheeled in sober and heard the surgeon saying that your leg was going to he amputated. "Wait!" you say. "I just have a broken ankle!" The surgeon checks the chart again and says "oh yeah that's right! Wrong procedure! Oh well no harm done!" Wow, you think. If the nurse had sedated you on time, you never would have overheard the surgeon and never would have stopped the medical error. You go to the hospital administrator to complain and they say "come on! You weren't even hurt!" And you said "but what if the nurse had sedated me I would have no leg!" And the hospital laughed and said "enough with the what ifs! You have no idea what would have happened! You are worrying about something that didn't happen and no one was hurt. That surgeon never makes mistakes."
By far the most entertaining post in this thread!