Okay, I had a random thought:
Jack mentions in Fragments that he was on Earth sometime around the extinction of the dinosaurs (”Dinosaurs? Had them for breakfast. Had to. Only source of pre-killed food protein after the asteroid crashed. Long story.”)
Of course we know that it wasn’t actually a meteor, it was a spaceship. That had Adric on board when it crashed. (Earthshock)
So.
What if Jack Harkness was there to save Adric as a favor to the Doctor without him knowing? And then dropped him off somewhere he wouldn’t cross the Doctor’s path again?
No, but imagine:
- Adric shows up at Missy’s garden and starts making maths calculus on the walls
- Amy Pond shows up and finds the garden weirdly familiar with Apalapucia
- Multiple Clara Oswald echoes appear and Missy’s goes “what the fuck”
- Jack Harkness is always passing by and Missy’s like “Why do you keep going away and coming back” and he’s like “Well it’s complicated”
- The Brigadier trying to boss everyone around
- Kamelion, basically, doing weird stuff, as always.
