Wryte: But that overcomplicates the issue. It's entirely possible to sequence the events in a way that doesn't result in a paradox at all:
1. In the original timeline(A), Twilight doesn't receive any message from her future self, and as a result she goes about her day as usual, which leads to the show being cancelled.
2. Somehow, at a point in timeline A after it's doomed, but before it actually ends, she somehow becomes aware of the impeding doom, researches the spell, and sends the message to her past self. This message begins Timeline B. Twilight A returns to her own timeline.
3. Timeline B, iteration 1: Having received the message from Twilight A, Twilight B disaster-proofs Equestria, saving it. Pinkie accompanies her to the library and finds the spell. Twilight B, unaware that Twilight A's message was legit, assumes it was a stable time loop sending a message to her past self warning her not to worry.
4. Timeline B, iterations 2-N: All further iterations of the loop are self-perpetuating, as Twilight saves Equestria and sends the message to herself.
No paradox required.
Of course, the alternative is that there's only one timeline with a loop, and the disaster never happens.
@Meta: EXACTLY. The problem I had with Wryte's theory is that the two timelines he theorizes are mutually exclusive. Timeline A (the disaster one) never sees Twilight send a message back, hence it can't be related to the others. She
must have gone back in the initial timeline, or the one we see couldn't occur.
edited 6th Jan '13 7:05:00 PM by JapaneseTeeth