"That's kinda open for debate," Rory said with a wry smile. "He claims to be a doctor of everything, but it's hard to tell when he's being serious sometimes. But we do have actual medical doctors on board, if you need one, and I'm fully qualified to do most of what they can." The second question made him pause for a moment. "Ah, that's the difficult one. No one really knows how large the TARDIS is. The hallways can move around a bit, if she feels like it, and the outside is smaller than the inside."