Pseudonym
Ivan Alias
delericho said:Actually, I think the answer to that one is simpler than that:the Master aged the Doctor by reversing the polarity of the 'Regeneration Machine' from earlier in the season in his Laser Screwdriver. So, when they defeat their enemy, or perhaps as a key part of doing so, they'll get their hands on it, reverse the polarity again, and have at it. Sorted.
The whole aging thing seemed a rather odd think for him to do. I thought that even without regenerating, Time Lords could go a few hundred years at least before old age set in. Aging a Time Lord 100 years shouldn't have done anything besides giving him a little grey around the temples, certainly not turn him into a withered old man.