A researcher is in a gondola of a balloon that loses lift and lands in the middle of a field near a road. Of course, it looks like the balloon landed in the middle of nowhere. As the researcher ponders appropriate courses of action, another person wanders by.

The researcher asks, "Where am I?" The other person responds, "You are in the gondola of a balloon in the middle of a field." The researcher comments, "You must design clinical trials." "Well, that’s amazing, how did you know?" "Your answer was correct and precise and totally useless."