Can I just ask, why do you even need to understand what people are doing before you can leave them alone? Why? Do you have that much time left over after dealing with your life that you go about sorting other people’s life?

Having a certificate is just a demonstration that you can learn. It is not end all or be all. It is good to be educated. But don’t forget it is not a replacement for common sense. Also, not all education is obtained in classrooms. So please broaden your mind.