Theory:Doctor Who television discontinuity and plot holes/World Enough and Time


 * Mr. Razor mentions "an expedition to floor 507, the largest of the solar farms." A solar farm generates electricity from sunlight.  Light inside a ship would take power to generate in the first place.  Collecting it to generate power does not make sense.
 * He was revealed to be the Master, perhaps he was lying for a good story.


 * Why is Bil not just instantly converted like the rest of the patients are? Why is she spared that fate for years?s
 * What exactly does Missy's umbrella do? No way she threatens people with it for show.
 * Why didn't the original crew just return straight up after they adjusted the thrusters? Why stay down there and let themselves devolve to the way their descendants are generations on?