It is the wisdom to use the Light Saber where needed. It was the skill set to realize not everything is a nail and the only tool you have is a hammer. It is recognizing a nail for what it is and using the tool needed for it. If there was no ultimate need for light sabers there is no need for light sabers. That being said Yoda is not perfect and subject to being a ‘being’, such as Christ did when he clear the temple overturning the money changers tables, not Moses when he yelled at the rock.
I loved that guy!