Fathers and sons are natural enemies. Look at any species. Shark, sees his father in the water, he's not thinking, Hey dad, wassup ? He's thinking, Back off, old man, this surfer carcass is mine. Of course, when his girlfriend swims up and she's like, Way, you know, there's enough surfer for everybody. You and your dad need to frenzy together more. Leave you father a thigh.
Every piece of work in the shops moves. Save 10 steps a day for each of the 12,000 employees, and you will have saved 50 miles of wasted motion and misspent energy.