Theory:Doctor Who television discontinuity and plot holes/The Power of Three


 * If the Doctor, Rory and Amy were able to jump through the portal as it exploded, surely parts of the explosion itself would also travel through?
 * If the cubes could scan all information on people, then what was the point of kidnapping the humans?
 * Remove key witnesses? But doesn't stack with old man's removal.


 * Who were the aliens with large mouths and what happened to them?
 * Servo-droids to keep the little girl safe? They were on patrol back on earth probably when Doctor and Amy T-ed.


 * In this story electricity effects the doctor like a human, but in several other stories (Terror of the Zygons, World War Three, A Christmas Invasion, The Pandoric Opens etc) he's shown an incredible resilence to electricity.
 * That's never been very consistent. For example, we've seen him be afraid of, or at least wary of, electric bolts from Rutans (Fang Rock, Gunpowder Plot) and the Master (The End of Time).


 * When removing the cubes from the hospital, no one seems to notice the little girl still has one.
 * Presumably people are cooperating with the staff, and they're in a big hurry, so they may not have noticed if she did anything at all to hide it.


 * Surely someone would have noticed the fact that the same girl was in the hospital for a year.
 * Why does no one notice the disappearing patients?
 * In this story having only one heart is impossible for a timelord to manage, but in the past he's survived with only one heart.
 * He survives this time too. It's not impossible to manage, it just leaves him weaker than usual. The last time he was down to one heart, in The Shakespeare Code, he was weakened, and couldn't chase after the Carrionites until Martha helped him restart the other one. And, unless you believe that the First Doctor had only one heart, this has been consistent throughout the series (and the novels—see the whole Sabbath storyline). Even non-Gallifreyans with two hearts explain that people with one heart are much weaker (e.g., The Dominators).


 * How does the visual aid recognise the doctor?


 * After the spaceship exploded, only Amy, Rory and the Doctor escaped. What happened to the people inside?