My wife and I once toured the legendary Waterford crystal factory in Ireland, where furnaces roar 24 hours a day, powered by gas piped in from miles away. Sixteen hundred employees take turns at three shifts daily. Their training takes years, especially for the glass etchers, the smallest group among the staff.
A company policy explains why the Waterford products are so perfectly crafted. No seconds are allowed. Employees work in teams, and if a mistake is made at any point in the process, the glass is broken and discarded. The whole team is charged with the error, not just the one making the mistake. And the team starts again.