[He shifts a bit in his seat, and watches Jim with something of a calculating expression for a few moments. Moriarty is not an easy boy to distract, but he can try.]

Hmn. Alright.

[Arthur gets to his feet, passing by Jim and tapping his shoulder.]

Come on, we're going for a walk. It'll distract you, clear your head and you can tell me all about your fascinating number theories.