I kinda got the impression that they had the ability / technology to accend, but couldn't do so as they were locked in time. Once unlocked they could accend easily, but the side effect to the universe is that to unlock time they'd bring an end to time (which would no longer bother them).
Still came out of nowhere and was daft as anything mind.
#5667736, By FHUTA The Official Doctor Who Thread
FHUTA 880 posts
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