A large cosmetics company received a complaint from a customer. She had bought one of their most popular soaps, but when she opened the box, she discovered it was empty.
The management took the complaint seriously, and identified the problem fast. The assembly line that was carrying boxes of products to the distribution department had no way to detect empty boxes.
Afraid this would happen again, the management asked a group of engineers to solve this challenge. The engineers quickly started developing a fluoroscopy machine with two large, high-resolution displays. Two people would staff the machine and remove empty boxes from the conveyor belt before reaching the distribution department.