"We're calculating the movements of the ley-lines. Affects some types of magic. It's good that you're interested in all this - most science types end up going to the universities, though I guess that's harder to swing if you're first generation. We mostly have to rely on apprentices - we have the best apprenticeship system for mathematics, if I do say so myself. None of that standardized classroom stuff that Bajilda is pushing... Anyways, I can write you an introduction to the librarian, so you can find something on the physics of the ley? That'd probably answer your questions better than I can just chatting."
She packs up a few more things, scribbles a letter that she hands to him, then turns to go. "Here, I can walk you to the library, I'm heading that way anyways."