Yes, intrigued is a better word I think. I think the challenge for him perhaps is not really understanding the whole thing, more participating in it directly? Which he has to, obviously.

I said earlier that I relate to some of the things he says and does and how, based on your posts, and that you two may have differences in perception, thinking and emotional style, I was also remembering how I tend to be very curious (intrigued!) about the unknown and unfamiliar. Very drawn to novelty, not always exactly in a wise way and taking big risks. There is also an element of being motivated by the challenge. Of course it can also feel scary and a reaction to that fear can be stopping to engage and avoidance, or cycles of push/pull.