Quote Originally Posted by Serapy View Post
The theory still stands. There's nothing in the game that states that Ultimecia possessed Squall, read his mind and created Griever out of it or that she can possess humans and thier minds (yes, there are a few cases, but such cases cannot be proved or disproved.)
However, the game has explicitly stated and displayed that Ultimecia can possess and read sorceresses' minds.

Therefore, the most logical assumption would be ...

Squall told Rinoa about Griever -> Rinoa learnt Griever out of Squall's mind -> more explanations from Squall -> Rinoa fully acknowledged the meaning of Griever -> Later into the game, Ultimecia possessed Rinoa -> Ultimecia fully acknowledged Griever.

She then created it in the final battle from that formation.
I was saying that it destroys the theory that Squall is Griever, which is the theory we were discussing. And it does. Squall is not Griever. Period.

I gave up discussing the R=U theory a long time ago.