Theory:Doctor Who television discontinuity and plot holes/A Good Man Goes to War


 * If River is Amy and Rory's daughter, why wasn't she erased along with Rory when he died in Cold Blood?
 * Simple. When Amy's parents were erased from time, Amy continued to exist. Therefore, when Rory was erased from time, River continued to exist.


 * Why would the Cybermen have safety signs on their ship? There's clearly a "Fire Escape" sign and another denoting the contents of the tanks in the background while the Cyber Leader calls out intruders.
 * Perhaps they stole the ships?
 * They were clearly the same Cyber Ships portrayed in the Series 5 Finale.
 * So, that doesn't mean they didn't steal them.
 * They are also similar to the ships in The Invasion. Also, Cybermen aren't indestructible, they would likely need safety guidelines as well.


 * Why hasn't the Doctor ever assembled an army before now and why didn't he bring more of his assistants to help instead of old enemies like a Sontaran.
 * Clearly he never saw the need before, and they are all people who owe him favours, he proberly doesn't want to interrupt his old friends new lives.
 * For all we know the Doctor may have done something similar to this before, but off-screen.
 * Although Sontarans are normally his enemy, Strax wasn't. Same can be said for the Silurians recruited to help.
 * The Doctor clearly chose his army for specific abilities. Martha Jones would have offered little to this mission, for example. Nor would, say, Sarah Jane. In addition, the Doctor has stated several times, most recently in SJA: Death of the Doctor his reluctance to revisit former companions. So instead of past companions he chose individuals to whom a debt was clearly owed.


 * Vastra compliments the Doctor on taking over the station without a drop of blood spilt. However, she is wrong as at least two soldiers and one monk die during an altercation explicitly orchestrated by the Doctor.


 * When the Silurians and Judoon and the Sontaran appear and take control of the base, why don't the monks attack then? And why are they left on the station when everyone else is taken away?
 * It's strongly implied at Kovarian arranged the whole thing as a trap, so the monks were likely acting under orders.


 * If Melody is a flesh avatar, why doesn't she "melt" when Rory uses the sonic screwdriver while holding her to open the door to Amy?