Principles are ways of successfully dealing with reality to get what you want out of life.
Ray Dalio, one of the world’s most successful investors and entrepreneurs, cites principles as his key to success.
No manager should delegate responsibilities to people they don't know well. It takes time to learn about people and how much confidence you can vest in them. Sometimes new people are offended when their managers don't have confidence in how they are carrying out their responsibilities. They think it's a criticism of their abilities when it's simply a matter of the manager being realistic about the fact that he or she hasn't had enough time or direct experience with them to form a point of view.