Richard's either reading it over very slowly, or reading it several times. Either way, he wants to make sure he doesn't miss a single nuance of it.

And eventually he does, and seems to even (finally) catch up with Jim.

"I've been bored," he says. "But I've never blown up old ladies because of it. Do you really handle boredom that badly—what am I talking about? Mr Holmes apparently shoots walls when there's nothing good on telly. Of course you do."

He shakes his head lightly as he hands the tablet back to Jim.