"Well, maybe not ideal, but it's the best way to make sure the other party won't wander off while you're talking to them. You're both sort of fixed in position. No looking away, no changing the subject. It's sort of freeing."

Freeing might not have been the right word. Sort of entrapping, actually. But, in a way, the Doctor preferred these types of conversations. He could lie more efficiently.

"How much further down?"