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.
There are all sorts of jobs and they require all types of people to handle them. I am frequently biased toward finding the entrepreneur type--a clever, open-minded scrapper who will find the best solution--and I have often been disappointed. On the other hand, sometimes I have found a master craftsman who has devoted decades to his specialty who I could completely rely on. What keeps coming to my mind is Malcolm Gladwell's rule that it takes ten thousand hours of doing something to build expertise--and the value of looking at batting averages to judge how well a person can hit. One way you can tell how well a talented rookie will do relative to a proven star is to get them into a debate with each other and see how well they each hold up.