FYI it isn't anything to do with time-hopping or traveling, it's just access to memories. Just as when you are trying to figure out a problem you might suddenly remember a moment from your past that can help you. But yes, not everyone learns it fully enough (or tries to) to get to that level of perception.
"It's a poor sort of memory that only works backwards" - The Queen of Hearts
Except that her "memory" was working forwards, too, so it wasn't memory and therefore had everything to do with time-hopping.
Disagree.
Exactly! (hence my Alice in Wonderland quote about memory)
Also, good news: "Arrival/Blade Runner 2029 director Denis Villeneuve expressed an interest in directing a remake to Dune" GIVE IT TO HIM NOW!