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.
This is especially true over short periods of time like a year or two, yet most people want to assume that when someone does something wrong the person will learn the lesson and change. That's naive. It is best to assume that they won't change unless there is good evidence to the contrary that they will.
It's better to bet on changes you have seen than those you hope for.