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.
Give me someone who can be responsible for an entire area--someone who can design, hire, and sort to achieve the goal--and I can be comfortable things will go well. These are the most important people to choose and manage well. Senior managers must be capable of higher-level thinking, and understand the difference between goals and tasks-- otherwise you will have to do their jobs for them. The ability to see and value goals is largely innate, though it improves with experience. It can be tested for, though no tests are perfect.