It means that the adult is an adult and that what he or she makes will be things that are really valuable to him or her and are valuable to life. The outsider can see his work is hard, hard, even silly, crazy. The outsider can see him quietly, even boring but he himself is extremely happy, see freedom of self. He mastered his life.
When a child knows what he wants to do and does it himself, there is no need to call: "Mother / Grandma / Daddy / Grandpa / Grandma / Grandpa, ... see this child," not It will be fine, not to look at whether the adult has agreed to do it or not, compliment or refrain from doing it or not. .
This means that the baby has perfected the embryo of maturity. I will soon be a mature adult, capable of mastering my life. The outsider can see you quiet, or ask questions, want to work on their own, want to be selected decision, sometimes someone thinks you stubborn, it is difficult to say. But it is an indispensable way to improve my mature embryo.