Theory:Doctor Who television discontinuity and plot holes/Dark Water


 * What is the point of hiding spare keys all over the TARDIS in the first place, if The Doctor looses a key whilst out and about whats the point of having spare keys all over the inside of the TARDIS, and why are they hidden in the first place who are they hidden from? If its Clara clearly they are terrible hiding places and if to prevent other people from having them surely if they steal one of the keys then their already in the TARDIS and if they are already in the TARDIS why would they try and steal a key thats only purpose is to get inside the TARDIS?


 * I know it was a dream but does Clara not realise that, even if she throws destroys all the keys, The Doctor can open the door with a click of his fingers, after all she's seen him do it before and has even done it herself?


 * Why would The Doctor say "Go to hell," wouldn't it be more realistic for him to say "We go to hell?" If what he says is what he means than it makes no sense for him to say what he said.


 * If only organic matter can be seen through Dark Water, how can buttons and sentences 'Rest in Peace' be shown when Cybermen pushes those button?