The boy's mouth was feeling dry again, so he took another drink. A bewildering succession of thoughts passed through his mind at high speed. Eventually they crystallised into something that might have been expressed as: No-one ever took this much interest in me before, they probably know everything about me already so there's no point in holding back, and, being honest, I kind of like this guy and he's easy to talk to.
He took a deep breath and gathered himself. "Well, I .. I thought of being a doctor. When I was little, you know? It's fascinating, how things work, cells and biochemistry, ways to manipulate it, and fix things, with drugs, or gene splicing and other tech, that sort of thing. And the differences between species, like the vascular structures in Iridonians with their two hearts, and the way the Twi'lek digestion works, it's really complex and their liver works in multiple stages ... umm … “, he was visibly lighting up with enthusiasm but then consciously damped it down, not wanting to start babbling.