Throughout its first six seasons, the HBO adaptation of Game of Thrones had a handful
of time-travelish moments mostly centered on young Bran’s dreams of the past. But it
wasn’t until the origin story of Bran’s half-giant companion, Hodor, that we saw a
definitive influence of present-day Bran on Hodor’s past. The interaction is a terrific
example of a closed causal loop: Bran is observing Hodor in the past because of who Hodor is
to Bran, and it is Bran’s presence that creates that very Hodor.
The past is written; the ink is dry.
1 English variant