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. TehDash 05:45, June 7, 2011 (UTC)
 * perhaps they stole the ships?


 * They were clearly the same Cyber Ships portrayed in the Series 5 Finale.TehDash 08:13, June 7, 2011 (UTC)


 * 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.