Theory:Doctor Who television discontinuity and plot holes/The Invasion of Time


 * Stor also has a cockney accent.
 * If, as the Ninth Doctor says, "lots of planets have a north" then it's quite conceivable that many planets, including the home of the Sontarans, can have different accents.


 * The Doctor forgets his induction, though in later Gallifrey stories such as Arc of Infinity and The Five Doctors, he seems to remember the events very well.
 * He was faking forgetfullness to get out of it. Alternatively, Leela, Andred, or K-9 could have explained what happened between the scene in which the Doctor returns to the warehouse after having stopped Stor and the scene in which the Doctor prepares to leave.


 * What happens to the Sontarans waiting to invade Gallifrey?
 * They are trapped outside Gallifrey when the transduction barrier goes back up.


 * Why don't the Sontaran ships just come in one at a time? The first one got through alright.
 * The Transduction Barrier went back up.


 * After taking ages wandering round the TARDIS, they find their way out rather quickly.
 * It's often easier to retrace your steps when returning along a path.


 * Just after the Doctor takes something similar to fit when the Crown of Rassilon is placed on his head Borusa said "This is unearthly" Even though they are Gallifreyan.
 * Unearthly is just an expression, meaning something like "unnatural". It doesn't necessarily have anything to do with the planet Earth.


 * If the Doctor has lost all memory of becoming President after he uses the disintegrator, why does he return to Leela and the others who are waiting for him in the TARDIS workshop?


 * Why did the Doctor contact the Vardans in the first place? If the Transduction Barrier prevented their invading, why take it down? Even as a ruse to trap them, it makes no sense, for Gallifrey was impenetrable.
 * He felt they were so dangerous that they needed to be preemptively stop.


 * Why would aliens as powerful as the Vardans require to ally themselves to the Sontarans?


 * The Doctor tells Borusa that the Vardans have 'more power than you could possibly imagine'. If so, why do they want the Great Key?
 * Again, the Doctor may just be using the Vardans' inflated egos to manipulate them, and for it to work, he may need the others to believe the Vardans are as powerful as they themselves believe.


 * It is not explained why the Matrix attacked the Doctor.
 * He was involved in an attempt to invade Gallifrey, albeit somewhat unwillingly.