JetLife
/ SOHH /
He is saying Bran can't change anything we have seen in seasons 1-6. Everything that has happened on the show, can't be changed, because it was already effected by whatever Bran has done.
Exactly. Not sure why this is dragging through this thread. Bran changed the past but hasn't changed the timeline of events (of what we know as viewers that has been established as the present in Seasons 1-6), this just established the backstory of Hodor.
Now, if Bran Bran goes back and tries to stop himself from D'Angelo Russell'ing the Cersei/Jaime bangout sesh to save himself from being a cripple or tries to go back further in time to stop the Hodor conversion out of guilt, then it unravels the timeline of the established present tense and opens up a pandora's box of really shytty paradoxes.