"Please, it's -- ah. Thank you -- it-it's quite all right. As you said, we haven't properly talked, really." The last thing Arthur wants is for a fuss to be made about his sight, unless he's good and ready to initiate it himself. Simply perceive him as little as he does you please thanks.

He pushes his cane out ahead of him, and the ball at its end rattles informatively across the floor until he finds the offered chair. He identifies the front, pats the seat, touches the arms, and sits.

While Watson's seeing to the door, Arthur's considering how best to explain his problem without inviting too many questions about the missing information. "Thank you for listening, Doctor," he says in the meantime, even though he hasn't actually shared anything to listen to yet. "I realise it's an imposition."