Not yet.

[Not that he doesn't think he can answer himself, with some research or trial and error. Being so ignorant still makes him uncomfortable. It's something else to pretend he's an idiot.

He hesitates before going on. He doesn't want to sound like he's giving himself airs, but...]

And you're not the first to say, about the familiarity. That's - actually the least detail I've heard it in so far.