Theory:Doctor Who television discontinuity and plot holes/The Doctor Falls


 * How were the rifles upgrades? And if every rifles was upgraded, so why wasn't Bill destroyed when she was shot at by accident?
 * The rifles weren't upgraded. It was just Nardole hacking the spaceship and exploding parts of it. The rifle shot was a deception, to fool Cybermen into believing humans have serious weapons.
 * Why didn't Nardole just blow up parts of the ship that contained Cybermen?
 * As he blew them up by igniting fuel pipes on the floor, due to it having been a solar farm. He'd need all the floors to be one, which they aren't.


 * Did something happen to the programming of the Cybermen, cause, I thought they only went after "humans" with 2 hearts!
 * The definition was expanded to include humanoids with two hearts. So they were still heading after normal humans too. Better question, could Nardole still have went down there safely and reprogrammed the computer to discount all humanoids from their protocol? They weren't targeting him before so unless he happens to have two hearts, it's unlikely the Doctor's upgrade would have included him too.
 * Your question needs separating.


 * How comes the Doctor can remember what Clara looks like all of a sudden? His mind was wiped of what she looked like in Hell Bent, but he has a vision of her before waking up.
 * Perhaps that was for our benefit and not what he actually saw? Also, he is dying, perhaps he briefly bypassed it. Note, he was in the TARDIS when it occurred.


 * It is suggested that they could all escape in the Doctors TARDIS, but by the time they get to the top floor the Cybermen would have upgraded enough to stop them, so how do Heather and Bill get to the TARDIS without getting killed?
 * They are sentient oil, different physics. Plus, the Doctor killed practically all of them when he ignited floor 0507, so it's likely the condition of the Cybermen reset some hundred years.


 * Because of the above, couldn't Heather and Bill have saved Nardole and all the children?


 * So did Bill revive the Doctor or wash is regenerative process just taking it's time starting? Cause if the latter, shouldn't he be dead, as regeneration has proved that once it starts it has to finish or they die (it started either earlier when he fell against that tree or when the energy came out of his hand after being blasted).