sredeye 5pts In the 8th Doctor original movie, the Doctor mentioned that he was half human. The sisters' regeneration potion could have used only the 8th Doctor's human part, creating a young John Hurt regeneration that would be human, like the clone of the 10th doctor. That would explain why we see an old John Hurt in the 11th Doctor's time because he would age. Therefore he would not count as a numbered doctor. What if the sisters found a way to reserve the Time Lord image or DNA or whatever of #8, so that with their involvement & presence, when #12's time is up, he would regenerate into #8? Trouble with that is that we'd probably have to wait too long for a #8 series &/or movies &/or specials, when maybe we'll get lucky and get spinoffs earlier, since there are so many excited #8 enthusiasts now!By the way, "change.org" has a petition going for requesting a #8 Doctor series. from BBC.