That sounds interesting. I'll have to look that up.
Also...
If the Nolans ever tackle mythology, they could say Caine is really a age-old deity that tries to position himself to help out mankind, just on a smaller, personal level. That could explain how every character is actually him.
PRIMER was a more traditional time travel movie in that it showed the time travel from the start. It got very complicated, but you saw what was happening as it was happening. Of course, you had to work back to think out the whole timeline--but I don't mind those kinds of puzzles. And it was a rewarding experience. Of all the time travel movies, this is probably the best in establishing the rules of its world and then sticking to those rules to play out the consequences of such a premise.
In TENET, I knew intellectually that people were travelling back in time. But for the first hour and a half, its just a concept that you have to hold in your head, because it's not shown or really highlighted during that run time. If you're paying attention to the dialogue you know that's what's happening but it's not on display. And in that way it doesn't feel like a time travel movie--you don't see people doing the thing they are talking about.
In most time travel movies, people jump forward or back in time--whereas here the characters are travelling at the same rate as everyone else in the world--they aren't fast forwarding or fast rewinding--so if they're going back in time, they are going at the same rate as normal time but in a backwards direction. Now how that is happening in TENET--my brain is starting to lose it. I'm not actually sure. In PRIMER, it's simple, because they're in the box inside the box--I don't have to account for outside the box time backward movement, that's not happening in that world.
TENET is like a comic book science fiction story that establishes some factoid about science--a straw can pierce through a tree when it's blown at high speed--and then expands that factoid into something much larger but unrealistic--the Flash can go through a wall.
I know that theoretically, particles at the sub-atomic level might travel backwards in time. But those special circumstances are hard to observe--you need to go the edge of a black hole or use the large hadron collider to test the theory. And it's a whole other thing to take that theoretical element to the macro level. It makes no sense. That's fine for a movie like INCEPTION where everything is inside a dream inside a dream--so it doesn't need to make sense. But TENET depends upon a scientific idea that can't support the weight of the movie. The final hour when they do pull back the curtain on the backward travel, there are too many contradictions in logic.