Flexor the Mighty! said:
I forgot about the Five Doctors. But Sara Jane didn't seem to have memory of it during the series either so maybe that didn't happen in regular time or something? Its really better if we all just forget it though...
Well, in the universe of Doctor Who, there are five basic dimensions that a TARDIS is involved with. If the fourth is time, and the fifth was translated by the TARDIS as "space" (
An Unearthly Child) I would suggest that the fifth is actually some sort of additional time dimension. Something can occur in the past from the standpoint of the 4th dimension, but still be in the present or the future from the standpoint of the 5th. It hasn't happened yet.
(This is how, IMHO, the time/space telephone the 9th Doctor gives Rose works, or the time/space telegraph that the 4th Doctor gave the Brigadier. It would also explain why Gallifrey is always approached in the "present" -- it travels along the same 5th-dimensional plane as the TARDISes do -- why encounters with other Time Lords are always sequential barring breakdowns in the equipment or world-threatening events, the 5th Doctor's comments in
Mawdryn Undead to the effect that the past and future were happening at the same time, how the 7th Doctor could know the Rani's age in
Time and the Rani by knowing his own, and a whole slew of other things.)
Why would she have to be regenerated? Doc could go back to a year or so later and see how she is doing...cue story about future Cardiff, err...Earth with all kinds of possibilities. Get a 16-17 year old cute girl to play the role and viola! That way he could be the last of the Time Lords still and she could still be alive.
Kilmore had suggested the regeneration. You would also have to take into account the older version of Susan in
The Five Doctors, because bopping around like that in someone's personal history seems to carry some potentially catastrophic consequences. Of course, after the Time War, it might be possible....!
The continuity of time has been altered more than once in the history of
Doctor Who. As the future the programme predicted failed to materialize (where are those astronaut fairs and slidewalks, anyway?) several attempts were made to reboot the universe. The Key to Time storylines allowed the universe to stop and be adjusted. The Black Guardian trilogy with the 5th Doctor (
Terminus,
Mawdryn Undead, and
Enlightenment) seems to have allowed a simular change. Around the time of the 7th Doctor, we began to hear throwaway lines about how humans failed to remember all the adventures the Doctor had been in on Earth, but it is equally possible that the changes made in the previously mentioned stories altered history somewhat for the 4th-dimensional universe if not for the 5th-dimensional Doctor and those travelling with him.
In the aftermath of
The Long Game the history of the 4th Great and Bountiful Human Empire is definitely changed, as is earth history, by the actions of the 9th Doctor and the daleks. It is also obvious that the Time War was meant as a way of rebooting the future and the past to allow new stories to be told that don't automatically follow the same continuity. The universe that the Doctor inhabits is adjusted to be slightly closer to our own.
The daleks have time travel, and they are not always encountered sequentially. This indicates that their time travel has properties that the Time Lords cannot control. It seems obvious to me that, in order to destroy the daleks, the Time Lords must destroy them in all time frames. It is reasonable to believe that only species with at least rudimentary time travel capability even retain the ability to know that the daleks -- or the Time Lords -- even existed.
That begs the question -- does the future that Susan was left in even exist? Or did the Time War simply delete that part of history? And if history did change, resulting in a different future, wouldn't Susan's being there become a paradox? Enter the reavers.
Personally, I think Susan perished in the Time War. Not because she fought. She was simply a civilian casualty. If they did bring her back, I'd prefer it as a non-corporeal being like the Gelth or the Wire (results of the Time War), that the Doctor would have to try to save.
RC