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.
A good designer is able to visualize the machine and its outcomes in various iterations. First they imagine how Harry, Larry, and Sally can operate in various ways with various tools and different incentives and penalties; then they replace Harry with George, and so on, thinking through what the products and people and finances would look like month by month (or quarter by quarter) under each scenario. Then they choose.