" Toyota has a rather unusual production process. If anybody on the production line is having a problem or observes an error, that person pulls a cord that halts production across the plant. Senior executives rush over to see what has gone wrong and, if an employee is having difficulty performing her job, she is helped as needed by executives. The error is then assessed, lessons learned, and the system adapted. It is called the Toyota Production System, or TPS, and is one of the most successful techniques in industrial history. “The system was about cars, which are very different from people,” Kaplan says when we meet for an interview. “But the underlying principle is transferable. If a culture is open and honest about mistakes, the entire system can learn from them. That is the way you gain improvements. "

― Matthew Syed , Black Box Thinking: Why Some People Never Learn from Their Mistakes - But Some Do