Originally Posted by Sir Bahamut
Sorry, Angel Wing, you are quite right; it was I who had not properly read your post. I skimmed through, and figured you were making another set of arguments for the R=U theory, when in fact, you were discussing Edea being Ultimecia (which by the way, is impossible too, as Edea is not a sorceress by the end of the game).
So sorry about that, again. About Ultimecia though, she's simply Ultimecia. She isn't anyone from the era that our heroes belong to. She was born in the future, and as a natural part of her human lifespan, grew up to become Ultimecia. It seems highly likely that she was driven to evil/madness because of history: the damage done by Ultimecia would have been recorded in history, meaning the eras after Squall would know that a sorceress would sooner or later arise, who would be Ultimecia. This would strengthen anti-sorceress attitudes probably to the point where sorceresses were persecuted from ther inception(remember Ultimecias speech through Edea to Galbadia, after killing the president; all about persecution of sorceresses etc.). Ultimecia was probably thus born into a world that hated her for crimes she had not yet commited, driving her into evil/madness.
This is a brief summary, of course. A full account on this theory can be found iin the FAQ I have referenced to earlier.
One final comment, which I hadn't yet spotted:
This is not a valid argument. By your logic, I should be dead right now, because at some point in my future I will die! Killing your future self has no bearing on your present self. It is only killing your past self that would cause a paradox.