Theory:Doctor Who television discontinuity and plot holes/The Caves of Androzani


 * It is clear when seeing the Doctor through the eyes of the robot in episode two that he is wearing his hearts on the outside of his jacket.
 * The android is seeing through his jacket except for an outline of it.


 * In one moment of the regeneration scene, the Doctor's head is on Peri's lap, in the next he is lying flat on the floor with Peri nowhere near him.
 * After the regeneration we see her crouched by the door.
 * She moves, likely having been scared by the lights/energy release.


 * When Stotz is firing at Sharaz Jek at the conclusion of part Four, part of his gun splits in two and falls off.
 * Perhaps it's part of the gun's magazine?


 * Why does Stotz have to kill his crewmates in episode 4?
 * The practical reason is that they could be a liability or threat, as they know him and his immediate plans. He also has a long-standing feud with at least one of them, and appears to enjoy killing them.
 * In all justice to Stotz (as far as he deserves any), there is only one serviceable ship left (Morgus' ship, after the Doctor crash-landed the gun-runner's ship), and Krelper is most unlikely to wait for Morgus and Stotz to return before taking off.
 * Also, he wants to send a message to Morgus not to think about trying to double-cross him.


 * Why didn't the Doctor quickly drink his half of the bat's milk before returning to Peri? Hindsight aside, surely it would've been easier to get Peri to safety if he hadn't been suffering from the effects of spectrox toxaemia himself.
 * The Doctor wasn't sure how much of the bat's milk would be necessary to cure either of them so he wanted to make sure Peri got enough first. When he got to her with only one tube he told her it was (only) enough for one to reassure her. And maybe he knew it was time for him to regenerate anyway.