Welcome to Module Four of Kidney School.

A wise man once said, "If you aim at nothing, you will hit it every time."

Imagine you are taking practice shots with a bow and arrow. You lay a target face up on the grass, walk a short distance away and shoot an arrow straight up into the air. You hope the arrow will land in the center of the bulls-eye. What are the chances that you will hit your mark?

Slim, you say?