BTW, how many times someone has to watch Tenet to fully understand it?
I kinda of get it...but sometimes the ends don't really meet (unsurprisingly).
Definitely has a lot of loose ends. Time travel stuff always will. I think Nolan's reach exceeded his grasp on that one TBH.
Anything with time travel will always be in the realm of science fiction. Terminator, Back to the Future, The Flash TV series (Barry runs so fast he can go to the past or the future), Time Cop ...
The only way to travel through time is towards the future, and that's not really time travel, that's just waiting in stasis until you wake up, or you travel so fast time passes faster for everyone else, which kinda defeats the purpose of trying to move as fast as light or faster than light.
One can maybe "visit" or see the past, but so far "travelling" to the past is simply not possible. We'd have seen something by now maybe.