Vuel'thanel is someone that is curious, yet instead of storing that information and wanting to learn more, he'll take it and find what he can do with it. For example, when he learned how to use a bow, he didn't master it and then move on, he wanted to know everything about the bow. Its strengths and weaknesses, how it can be used as a weapon in melee. His instructors were somewhat hesitant with his thirst for specific knowledge, but they eventually trained a very capable Hunter. He doesn't let his addiction get the better of him, as he sees it as a weakness that shouldn't be shared.