translation.en: Unfortunately, there's one group of people who get almost no systematic feedback to help them do their jobs better, and these people have one of the most important jobs in the world.
translation.zh: 遗憾的是，有一群人 几乎收不到系统化的反馈信息 来提高他们的工作效率， 而这一群人 从事着世界上最重要的职业之一。