10 Doctor Who Plot Holes You Didn't Realise Were Actually Solved
2. Hasn't The Doctor Been That Far Out Before?
Wild Blue Yonder makes a very big deal of sending the Doctor out farther than he’s ever been before, stranding him and Donna at the very edge of the universe.
It is a dark, lonely place – similar to Leeds – with the Doctor repeatedly reinforcing to Donna the implications of how far they’ve gone.
But the thing is, this isn’t really new for the Doctor. He’s been to the edge of the universe, the end of the universe, different universes, and even outside the universe altogether. So what makes Wild Blue Yonder different? Why is the Fourteenth Doctor so scared?
The answer here is context. The Doctor isn’t just scared because of where they are, but because of how exposed they are to it.
This is made much more clear in a deleted scene from the episode's script, where the Doctor explains to Donna that he’s thus far ventured so far out "only inside magnificent Timeships." But being there without protection is not only something he hasn’t done before, but that "No one ever has."
It's another moment that again is so brief that you have to wonder why it was cut in the first place, because it also adds new depth to the Doctor's reaction at where he and Donna end up at the start of the episode.