

Ayla is The Leader of the humans, their most skilled human fighter and the only one who would attack the Reptite headquarters. This is caused by the fact that to beat Lavos at this moment, you'll have to take Ayla with you. In Chrono Trigger, if you visit the pre-historic time period, and then beat the game without causing the humans to defeat the Reptites, you will get the "World of Reptites" ending where the Reptites became the dominant species on the planet.
#The game creators wayback series

The rules for them aren't exactly set in stone either. At least once, a fixed point in time was actually engineered. However, several villainous plots would have averted those fixed points if they had come to fruition Omnicidal Maniac plans to destroy the universe/the multiverse/reality itself have shown to have succeeded because the Doctor had been killed in a For Want of a Nail scenario, but this still did not cause the Time Crash messing with a fixed point does even though said-points hadn't even happened yet. The new series has also introduced the idea of "fixed points", which amounts to there being some things you can change, and some things you can't.In " Blink", the Doctor explains that time, rather than being a linear chain of cause and effect, is actually " a big ball of wibbly-wobbly, timey-wimey stuff." This apparently explains everything.The general Hand Wave is that things have gotten really screwy since the Time Lords died off. Except this doesn't make sense either in BttF, Marty was the one who altered history, whereas in the episode, the witches existed totally independent of the Doctor's travels. The Doctor explains that it is similar to Back to the Future. It's pointed out by Martha in " The Shakespeare Code".(In which case, one wonders and this question has been voiced in the series why the heck does the Doctor keep travelling around?! Presumably, if he didn't, the effect would be that 1980 Earth had always been a desolate wasteland, and there wouldn't be a "real" 1980 for Sarah to come from). Apparently, once the Doctor arrives somewhere, he must complete the Stable Time Loop to maintain the "proper" version of history. and it turns out to be a desolate wasteland. In " Pyramids of Mars", Sarah Jane asks why they have to stop the villain destroying the Earth in 1915, when they know it's fine in 1980.Doctor Who does this all the time, especially in the new series.
