History Fridge / DoctorWhoS29E11Utopia

* While regenerating, The Master says that if the Doctor can be young and strong, so can he. This works as {{Foreshadowing}} for the revelation at the end of [[Recap/DoctorWhoS33E13TheNameOfTheDoctor "The Name of the Doctor"]], that [[spoiler:there was an older, as yet unseen regeneration of the Doctor who likewise had grey hair]].

* The idea humanity evolved back into their present-day form? Strange but somewhat plausible. Having nearly-identical technology to the 20th and 21st centuries, not so much. But then you realize Yana could have subconsciously built the silo and their vehicles from remnants of the Master's memories.

* While regenerating, The Master says that if the Doctor can be young and strong, so can he. This works as {{Foreshadowing}} for the revelation at the end of [[Recap/DoctorWhoS33E13TheNameOfTheDoctor "The Name of the Doctor"]], that [[spoiler:there was an older, as yet unseen regeneration of the Doctor]].
** It was more likely a reference to the fact that most of the Doctors in the classic series were notably older than the 10th Doctor.
* When Yana opens the fobwatch, the Doctor has an OhCrap face. At first this doesn't make sense, however if you stop and think about it... of all the people that fought in the Time War who would have the likeliest chance of surviving? Obviously the Doctor and some of the Daleks but also THE MASTER!

* The Doctor, upon reading what year the console's sensors have registered, protests that it's "impossible" for them to be 100 trillion years in the future. "Hell Bent" suggests that he wasn't just being amazed, but meant it ''literally'': the physical universe, itself, won't last nearly that long. Rather, "100 trillion" was most likely a glitch: a reading that the TARDIS defaults to when she ventures so close to the end of Time that her chronometer can't interpret its readings any more. Which would explain why the Master chose to hide out in such a distant era, despite it being doomed: it's the one temporal destination in which the Time Lords weren't able to navigate properly, so they couldn't track him down and execute him for desertion or drag him back into the war.
* Why is [[GoodCounterpart Yana]] so different from the Master? Could very well be a subtle ShoutOut to [[Recap/DoctorWhoS29E9TheFamilyOfBlood the previous story with a fob watch]], where John Smith was romantic, willing to allow children to be beaten, and obedient to authority-completely the opposite of the Doctor.

* When the Master regenerates, we see the same sort of glowing energy pour out of him as when other revival-era Time Lords do so, except that there's a sickly green tinge to the usual golden streams of force. This implies that the Master's many years of existing in the stolen bodies of HumanAliens and humans, cheating the usual limitation on how many regenerations a Time Lord gets, have permanently corrupted the process in some way, even ''after'' the High Council granted him a new series of lives so he could fight in the Time War.

* Professor Yana's computer was intended to look like a TARDIS console, only for the writers to nix the idea when they decided the Doctor would notice this. And yet, in his next incarnation, the Doctor failed to realise he was standing around several hundred TARDIS corpses. Which means the Master could in all likelihood have had a TARDIS with him when he fled to the year one trillion, and later on took it to pieces without realising what it was.

* We know what the Saxon Master eventually is responsible for: [[Recap/DoctorWhoS29E12TheSoundOfDrums Killing the US president]] [[Recap/DoctorWhoS29E13LastOfTheTimeLords and nearly turning Earth into a]] CrapsackWorld; [[Recap/DoctorWhoS30E17E18TheEndOfTime briefly turning everyone on Earth into a duplicate of himself, almost restarting the Time War, and causing Ten to regenerate]]; and [[spoiler:[[Recap/DoctorWhoS36E11WorldEnoughAndTime having a hand in the creation of the Cybermen, including converting Bill Potts]]]]. And then his next incarnation [[Recap/DoctorWhoS34E11DarkWater converted every dead human on Earth]] [[Recap/DoctorWhoS34E12DeathInHeaven into a Cyberman]]. And all because [[NiceJobBreakingItHero Martha]] [[UnwittingInstigatorOfDoom Jones]] [[ForWantOfANail accidentally broke the perception filter on Yana's fob watch]].

** If you consider that he's recalling the events of [[Recap/DoctorWho2007CiNSTimeCrash Time Crash]] from when he was the Fifth Doctor, where he learnt that he would be facing the Master again in his future incarnation... The look of horror on his face is his realisation that that moment is ''now''.

* When the Master regenerates, we see the same sort of glowing energy pour out of him as when other Time Lords do so, except that there's a sickly green tinge to the usual golden streams of force. This implies that the Master's many years of existing in the stolen bodies of HumanAliens and humans, cheating the usual limitation on how many regenerations a Time Lord gets, have permanently corrupted the process in some way, even ''after'' the High Council granted him a new series of lives so he could fight in the Time War.

* We know what the Saxon Master eventually is responsible for: [[Recap/DoctorWhoS29E12TheSoundOfDrums Killing the US president]] [[Recap/DoctorWhoS29E13LastOfTheTimeLords and nearly turning Earth into a]] CrapsackWorld; [[Recap/DoctorWhoS30E17E18TheEndOfTime briefly turning everyone on Earth into a duplicate of himself, and almost restarting the Time War]]; and [[spoiler:[[Recap/DoctorWhoS36E11WorldEnoughAndTime having a hand in the creation of the Cybermen, including converting Bill Potts]]]]. And then his next incarnation [[Recap/DoctorWhoS34E11DarkWater converted every dead human on Earth]] [[Recap/DoctorWhoS34E12DeathInHeaven into a Cyberman]]. And all because [[NiceJobBreakingItHero Martha]] [[UnwittingInstigatorOfDoom Jones]] [[ForWantOfANail accidentally broke the perception filter on Yana's fob watch]].

* We know what the Saxon Master eventually is responsible for: [[Recap/DoctorWhoS29E12TheSoundOfDrums Killing the US president]] [[Recap/DoctorWhoS29E13LastOfTheTimeLords and nearly turning Earth into a]] CrapsackWorld; [[Recap/DoctorWhoS30E17E18TheEndOfTime briefly turning everyone on Earth into a duplicate of himself, and almost restarting the Time War]]; and [[spoiler:[[Recap/DoctorWhoS36E11WorldEnoughAndTime having a hand in the creation of the Cybermen, including converting Bill Potts]]]]. And all because [[NiceJobBreakingItHero Martha]] [[UnwittingInstigatorOfDoom Jones]] [[ForWantOfANail accidentally broke the perception filter on Yana's fob watch]].

* "The End of Time" reveals that it wasn't just the Master that the Doctor was fearful of; almost any other one could be a problem.

* The Doctor, upon reading what year the console's sensors have registered, protests that it's "impossible" for them to be 100 trillion years in the future. "Hell Bent" suggests that he wasn't just being amazed, but meant it ''literally'': the physical universe, itself, won't last nearly that long. Rather, "100 trillion" was most likely a glitch: a reading that the TARDIS defaults to when she ventures so close to the end of Time that her chronometer can't interpret its readings any more. Which would explain why the Master chose to hide out in such a distant era, despite it being doomed: it's the one temporal location where the Time Lords weren't able to navigate properly, so they couldn't track him down and execute him for desertion or drag him back into the war.

* The Doctor, upon reading what year the console's sensors have registered, protests that it's "impossible" for them to be 100 trillion years in the future. "Hell Bent" suggests that he wasn't just being amazed, but meant it ''literally'': the physical universe, itself, won't last nearly that long. Rather, "100 trillion" was most likely a glitch: a reading that the TARDIS defaults to when it moves so close to the end of Time that her chronometer can't interpret its readings any more. Which would explain why the Master chose to hide out in such a distant era, despite it being doomed: it's the one temporal location where the Time Lords weren't able to navigate properly, so they couldn't track him down and execute him for desertion or drag him back into the war.

* The Doctor says that it's ''impossible'' for them to be 100 trillion years in the future. "Hell Bent" suggests that he wasn't just being amazed, he meant it literally: the universe itself won't last nearly that long. Rather, "100 trillion" was most likely a glitch: a reading that the TARDIS defaults to when it moves so close to the end of Time that her chronometer can't interpret its readings any more. Which would explain why the Master chose to hide out in such a distant era, despite it being doomed: it's the one temporal location where the Time Lords weren't able to navigate properly, so they couldn't track him down and execute him for desertion or drag him back into the war.

* The Doctor says that it's ''impossible'' for them to be 100 trillion years in the future. "Hell Bent" suggests that he wasn't just being amazed, he meant it literally: the universe itself won't last nearly that long. Rather, "100 trillion" was most likely a glitch: a reading that the TARDIS defaults to when it moves so close to the end of Time that her chronometer can't interpret its readings any more. Which would explain why the Master chose to hide out in that era: it's the one temporal location where the Time Lords couldn't navigate properly, so they couldn't track him down and execute him for desertion or drag him back into the war.

* The Doctor says that it's ''impossible'' for them to be 100 trillion years in the future. "Hell Bent" suggests that he wasn't just being amazed, he meant it literally: the universe itself won't last nearly that long. Rather, "100 trillion" was most likely a glitch: a reading that the TARDIS defaults to when it moves so close to the end of Time that her chronometer can't interpret its readings any more. Which would explain why the Master chose to hide out in that era: it's the one temporal location where the Time Lords couldn't navigate properly, so they couldn't find him and drag him back into the Time War.

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