Theory:Doctor Who television discontinuity and plot holes/Amy's Choice


 * Copying from the Story Notes, TARDIS' "Build date: 1963." This implies that a) TARDISes are build (not grown for a very-very long time, like mentioned earlier) b) when the First Doctor stole it, it was just finished being "built", without leaving any sort of leeway for travelling with Susan beforehand and c) Gallifrey has the same year measuring system as the Earth does.
 * a) The heart of the TARDIS must be grown, then the mechanics are built around it.


 * b) It is perfectly believable that they stole it then returned to the same year. It is a time machine after all.


 * c) This is not a plot hole.
 * Not a plot hole, but still. We measure our years at the rate our planet goes around the Sun, with 0 being a date at which one random person was supposedly born. Why would another planet oh so far away from us that is oh so much more advanced than we are (not to mention not Christian), with a binary star system, use the same year measuring system as we do?
 * The TARDIS has a universal translator. Perhaps it does or can translate dates into comerhensible language; we    wouldn't understand the calendar of an alien race so it translates it into the gregorian calendar.
 * Also this was a dream, so we shouldn't trust anythig we see.


 * This was a dream, granted, but seriously, a star that radiates cold? Since the Dream Lord is the Doctor, surely he would not dream of such a blant violation against the laws of physics?
 * The Doctor said that he doesn't know everything, the universe is big, plus that the laws of physics in the parallel universes are different, so the Doctor could be in a parallel one?


 * It is quite likely that since the Dream Lord seems to be the opposite of the Doctor, he used his imagination and inverted it.


 * It is also implied that the Dream Lord designed the dream worlds to confuse his "victims", hence the impossible ice sun.