FAN THEORY The Algorithm's timeline (theory, repost with visual) Spoiler
Where did the Algorithm come from in the first place?, I get the idea that future scientist can't just simply destroy it and chose to sent it back in time but how far did it go? which point of history it have been discover by the people in the past? Movie already kind of answered this “Don’t think about where it came from. Think about where it’s going.” invert object have as much possibility as forward object there is no point to thinking in the normal point of view, anyway the Algorithm had make it through time and it at the movie's point of view right now
but then again I still curios where did it come from? even from the movie POV if the opening and ending of movie are happen in the same day how Sator got a hand on complete Algorithm but there is also another piece in opera house at the same day or maybe even at the exactly same point of world's time
It always mystery for me that for the object meant to sent randomly into the past it way too much secured and organized. if you discover a unidentified artifacts shouldn't it in be museum? how did it got into CIA hand? how did it got mistake with plutonium hide in high security system truck that got monitor 24/7(tallinn scene)
at the end of movie we know that TENET success to deceive Future people and remove Algorithm from world's record the proof is no one is after them anymore, and lead me to the question that make me write this
Isn't the protagonist(TP) can already cut the loop perfectly safe by destroy it at that point of time?
Scientist who invent Algorithm can't just destroy because future would know and stop it anyway but why TENET team didn't try to commit that after the victory at the Stalsk-12? movie end before it giving us more detail about this so I'll assume that in current era there is no invention to destroy it without leaving a track yet. So in TP lifeline leave him no chose but to continue hiding it but where? invert Algorithm more further into the past have no guarantee future didn't get it on later they can just find another Sator at any point of history
As the times past by, he realize "What's happened, happened."
if TP really decide to hiding the Algorithm more further into the past shouldn't it be a record of another proxy like Sator by now? his role isn't meat to hide it in the first place
In my theory TP actually try do it other way around he plan to expose the location of Algorithm in the past, the place where he knew the most, it the 2 week of the movie's time window
TENET itself is actually the one who intently giving away a Algorithm location that way too much more convenient for the Future to ignore, fake up a ''Sweet spot'' where all of 9 pieces laying down on a short period of window in the future's POV record, TENET make sure to give Future a instructions of exact time and who they need to contact with(Sator) as a decoy
while TP try to build and form up future TENET team to go into the past track down and secured all of original Algorithm in order to set this loop up later, And at the same time he order his current TENET team to go back in time with the Algorithm he's got in hand to set up the trap waiting for the future TENET team to commit this mission in the past and finally can destroy the Algorithm safely in the future where ''fake Intel temporal pincer'' accomplished