Be honest. What theory or things did you think or try guess that was wrong in this show

@Zarutaku You're still thinking about this like it's some kind of multiverse or branching timeline scenario, but that’s not how this works. Eren doesn’t ‘receive’ information from another timeline. The Attack Titan allows inheritors to access memories—not premonitions, not alternate realities, but direct memories from past and future inheritors within the same timeline.

We have to ask ourselves.. why can Eren even see glimpses of the future?.. It's because of GRISHA. Eren can't SEE the future, he can only see what his father saw.. which is memories of the future that Eren sends to him once he gets the power of the attack titan mixed with the founder. Grisha didn’t see a different possible future—he saw Eren’s memories of events that had already happened in their one and only timeline. That’s a crucial distinction. There is no “other timeline where the future already happened,” because the future is not being transferred from elsewhere—it is simply being recalled, just as you would recall a past event from your own memory.

This completely dismantles the idea that another timeline must exist for Eren to know the future. His knowledge isn’t an anomaly that disrupts causality; it is a natural part of the single, deterministic flow of time in Attack on Titan. The future isn’t being changed, rewritten, or sent back—it’s simply unfolding as it always has, with Eren’s memories being an inevitable part of that process.

Grisha wasn’t seeing the future in the way most time-travel theories imagine. He was experiencing Eren’s memories of events that Eren had already lived through. That means Eren’s knowledge of the future wasn’t coming from some “other timeline” where it had already happened—it was always part of the single, deterministic timeline that the story follows.

Another point that completely disproves your theory is when Eren in the final episode says to Armin something along the lines of (forgive me for not recalling it precisely but its roughly what he says) "Past, present, and future all exist at the same time inside the paths. I don’t even know when I’m speaking from anymore." This directly reinforces the idea that time in Attack on Titan isn’t linear in the way we normally experience it. Instead, everything is already set and happening simultaneously from the perspective of Paths, which means Eren isn’t changing anything—he’s just experiencing time in a way that normal humans don’t. Eren doesn't fully control what he sees, He explicitly admits that he doesn’t know when he’s speaking from because the entire past, present and future is happening at once... Where are the multiple timelines coming from that you say exists? Eren even says himself that the past present and future are literally the same.. If he was actively manipulating timelines, he’d have precise knowledge of events. Instead, he’s caught in a deterministic loop where the past, present, and future are inseparable.

Once Eren gets the founding titan and can control it, with the power of the attack titan.. he sends the memories back to his father as they're happening in HIS present time... it's all happening at once in the same linear timeline. Don't you get it? Its so easy to understand that you don't need multiple timelines for this to work.. he's literally sending the memories back to his dad as they occur in REAL TIME... its all connected, he's literally living the memories himself that he sends back to his father who then young Eren see's when he see's his fathers memories... Its a mind fuck and a half but there you have it. So please, tell me again exactly how there are other timelines when its literally confirmed in the series by Eren himself that everything is happening at once for him, past, present and future.

First off "future memory" is an oxymoron, memories are always from the past, but assuming that "future memories" exist, then they must come from future point(s) in time back to the present point in time, so there are at least two active points in time simultaneously, which implies the existence of at least two timelines (in this case identical but time shifted), because each timeline can only have one active point in time, that's a key feature of all timelines.

@Fenyy Because receiving information from the future implies that there must be another timeline where this future already happened.

>joins a debate by saying "u r wrong, hahaha, u have no clue, ridiculous theory, disproven easily, makes no sense"
>has no actual counter arguments, yet tries to come across as smart
>thinks it's the other who's hilarious

oh, the irony

Eren knowing about the future but not being able to change it doesn't really make sense, because simply having information of the future would affect the present, and that would change the future, which would again affect the present, and so on.

@Zarutaku if i remember right eren said in the end that he just follows faithfully the future visions he saw on the paths dimension so ye he is an idiot for just following it and without even thinking of alternatives but he did say too that he cannot think of other better alternatives if i remember right so he might be delusional because of what the paths and founder ymir is implanting on his future visions

"only ymir knows" as the saying goes basically eren is just a puppet of ymir

actually eren didn't knew everything of future.. he saw glimpses of future.. like brief overview.. he didn't knew every certain things which will happen in future