Mannheim Peritonitis Index. A prognostic scoring system used to predict mortality in patients with peritonitis. Long-term survivors have an MPI score of about 20; non-survivors have a score of 33. Risk factorâScore.
What we do know for sure about the Three-Eyed Raven is that he is a Greenseer, gifted with the ability to see the past, present, and future and communicate through dreams. Greensight is more common with the Children of the Forest, but some humans, like the Three-Eyed Raven, also have this ability.
The Three-Eyed Raven tells Bran that he now must become the Three-Eyed Raven himself, even if he isn't ready. We've seen that Bran can affect the past, as his manipulation of Hodor's mind to defend himself from the White Walkers leads to Hodor's mental problems and eventual death.