white avenger
white avenger
There are paradox issues with going back and changing things we saw happen, though.
True, but there are often ways to avoid paradoxes. Thak for instance, Xander wanted to rescue Anya. What he would do is to go back to the time period between Buffy and the gang left the school building and everything collapsed, and retrieve her body in those last few seconds. Then, he could bring her to a time just before Buffy expelled all magic from the universe, find a wizard who could determine that Anya was only "mostly dead" (think of Wesley in "The Princess Bride") and restore her. Then they could travel on to the present, no paradoxes involved. Once here, since the future is fluid, not yet determined, anything that Anya did would be no more paradox-making than what anyone else did.
On the other hand, Anya dying in the hellmouth might, itself, have been the paradox, caused by D'Hofryn's (?) manipulations and plots. Rescuing Anya might actually put time back on its designated path (think of Mia Sara in "Time Cop")
Of course, rescuing Anya is only one example. Something similar could be worked out to excuse bringing back any dead character, from Jesse at the beginning of Season 1 to any of the people who died in the hellmouth in "Chosen," or throughout ATS, like, maybe Doyle, Lilah, Lindsey, Cordy, Wes...
See? When one literally owns the universe, the way that Joss does, he is, in a very real sense, that universe's god. He can impose, and justify that imposition, absolutely anything that he wants to without causing paradoxes, chaos, or apocalypse. Unless, of course, he actually WANTS paradoxes, chaos, and apocalypse.
(Once again, that's all just double talk, misdirection, and downright B S, but as a literary tool, it could work as well as anything else)