Originally Posted by Shiny_Griever
Both theories have info to support it, that's why we don't know which one is true 100%. FF8 leaves alot of things questionable.
One theory is strongly supported by information that is presented at the exact time of the incident in question, while the other suffers from an irreconcilable contradiction. Official SE information states that Sorceresses have normal lifespans. Ultimecia's time is one far into the future; therefore, individuals from Squall's time would have died. While Sorceresses cannot pass on without giving up the Witch Embodiment, they are utterly incapacitated at such time as they should have died. As a result, there is no reasonable way that Rinoa and Ultimecia can be the same person. You may believe what you like, but I assure you that the R=U theory is completely and unequivocally wrong.