Book puts out his hand just after he feels the impact, but his expression is entirely apologetic and kind. He nods in a way he hopes is reassuring to the young man. "Yes, of course. I think I've just lost my touch for the crowds."

He sees the little physical hints that Gansey is trying to get through, and Book helps with the motions, sticking his arm out to one person, a quiet 'pardon me' to another. Between the two of them, they can start to get somewhere.

"My thanks for pausing to help an old man," but the self-deprecating comment is tinged with too much amusement. "My name is Book. Ah, Shepherd Book."