Professor: So about 1 in 200,000 will have a life-threatening reaction to this procedure.
Student: Isn't that kind of a high number?
Professor: Well, actually just about every procedure you can think of will have some amount of risk.

[Cut to scene of first-year medical student about to test a knee-jerk reflex on a patient]

Student: This shouldn't hurt too much… [cut away with explosion noise]