Dr. Thomas Noguchi, the renowned Los Angeles coroner, was performing an autopsy on a young man in his twenties who had been stabbed to death. A Los Angeles Police Department homicide detective entered the room, carrying a brown bag that held the fatal weapon. "Do you want to take a look at it?" he asked.
"No," Dr.Noguchi said. "I'll tell you exactly what it looks like."
Dr. Noguchi wasn't showing off. He wanted to demonstrate an important forensic technique tothe pathology residents who were observing the autopsy.