There was something familiar about this man but the Doctor couldn't quite put his finger on it.
"Oh! You're one of the new arrivals?" He put his hands in his pockets. "Yes, lots of things to find out and learn here. Always new things cropping up or changing at random times. Keeps you on your toes." His eyebrows rose slightly at the mention of planets. "Well, that's a great big paradoxical island for you. It's in its nature to be predictably unpredictable."