An engineer, a statistician, and a physicist are out hunting. They spot a buck, and each takes a turn to try and bag it.
The physicist goes first. He pulls out his lab book and quickly calculates the trajectory of the bullet, assuming it is a perfect sphere in a vacuum. The bullet falls 20 meters short of the deer.
The engineer goes second. He pulls out his engineering pad and book of projectile assumptions. After a few minutes, he’s ready. He takes aim and fires. The bullet lands 20m past the deer.
The statistician triumphantly leaps in the air, shouting, “We got it!”