"What's tai chi?" He glances behind him, as if he might see an example-- which isn't precisely as silly as it sounds; there's at least four other people training here, sparring and moving through exercises. It is interesting to watch; Jack makes a private note to come here himself with a sketch pad.

"Sorry," he adds with a grin. "I don't mean to keep pepperin' you with questions; your poor hand. I talk too much sometimes."