system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Is experience the best teacher for a Jedi/Sith?

Even without additional formal training, Luke Skywalker progressed significantly between ESB and ROTJ, albeit he is a special case -- son of the Chosen One.

For a less special example, Cal Kestis managed to go from struggling with the Second Sister, to besting her in a duel. 

Therefore, is experience the best teacher for a Jedi/Sith?
gpt
To some extent, yes.

But strength in the Force isn't the most important thing for a Jedi. Wisdom is. In one sense experience is the only way to really become wise, but that's a long process. A master is important because they can impart their own wisdom on their padawan.