[[Prompt::A 22 year old male patient, previously healthy, presents to the emergency department (ED) complaining of acute constant abdominal pain and tenderness. He reports that at first his pain was periumbilical, but it then shifted to the right lower abdominal quadrant. Following appropriate work-up, he is diagnosed with appendicitis and is a candidate for appendectomy. At the same time, another patient in the ED presents with abdominal pain; he is diagnosed with cholecystitis. The surgeon makes a mistake and accidentally performs a cholecystectomy for the patient with the appendicitis. When the patient wakes up, what is the best way the surgeon might approach his mistake?]]