OK, I admit it. I am a terrible golfer. I start out with a couple of sleeves of balls, but by the time I have finished, I have one left. And I have no idea where the other balls are. I just cannot seem to keep track of where the ball went after I tee off.
Sometimes we have the same problems with milk in the dairy plant. We know what we started with, but by the end of the day, week, or month, we have considerably less than what we started with. We have no idea where the missing product went. We call that product loss or “shrink.”