Did the three eyed raven know
the truth about Hodor?
It seems to me that he is in control about what time and place is visited in the visions and that he always shows Bran events that are important. This means he knew what was going to happen and possibly also why it happened? Does this also mean
He knew he (and Hodor) were going to die that very moment?
And doesn't it also mean that
Every event is set in stone and that he actually knows both past and future events