Theory:Doctor Who television discontinuity and plot holes/Orphan 55


 * Why didn't the TARDIS translate that Russian sign for Graham and Yaz?
 * Maybe because they were too far away from it.
 * Agreed. The TARDIS didn't go with them, possibly leading the translation circuitry to disconnect. Or maybe the transportation cube was responsible.


 * Why does Ryan address Graham by name, after having decided to call him "Granddad" by the end of Series 11?


 * 1). How can the world be uninhabitable in the lead-up to its destruction when The Sontaran Experiment showed that it was still inhabitable?
 * 2). How can the future be "only a possibility" that can be avoided when it has been shown on multiple occasions that the exact opposite is the case?