ive never heard the R=U theory..it's stupid. it's more obvious that rinoa would have passed her powers onto someone and they then passed them onto Ultimacia, or since thers so many bratts running around garden Rinoa gave them to an heir and they turned EVIL. as for griever, doomsday was trapped in a ring, squals ring had griever on it....why didnt ultimacia just unleash griever form teh ring in the future.