First-year students at an anatomy class with a real dead human body. They all gather around they surgery table with the body covered by a white sheet. The Professor started the class by telling them, “In medicine, it is necessary to have two important qualities as a doctor: The first is that you not be disgusted by anything involving the human body.” As an example, the Professor pulled back the sheet, stuck his finger in the anus of the corpse, with drew it and stuck it in his mouth. “Go ahead and do the same thing”, he told his students. The students freaked out, hesitated for several minutes but eventually they overcame their revulsion and took turns sticking a finger in the butt of the dead body and sucking on it. When everyone finished, the Professor looked at them and told them, “The second most important quality is ‘Observation’”. “I stuck in my middle finger, and sucked on my index finger.” “Now pay attention”.