Because when he dad saw his son's future memories, that was a memory he had. If is son could gain the ability to see his father's memories from the past, that would possibly be one of the memories he experiences. It really isn't that complicated.
To break it down further, if you remember something today, later on, you might remember remembering it. Then just add paths. It's very simple, it just doesn't sound like it.
>future Eren showed Grisha his memories of the future
>Eren saw his own future memories through Grisha's memories
It's not that hard
This shit is unreadable you autist, use some borders for the red writing.
eren gained his memories when he was living in his sackballs
>Eren saw his future through the memories his father saw of Eren's future that he revealed to his father in the future in order to fulfill his plans for the future
Has there ever been a deeper story in manga?
In what way?
Kek, pathetic.
Jesus fucking christ is not even timetravel u fucking retards and is not something we didn't know, god i hate speedreaders.
Isn't there a huge loophole?
Future Eren, by sending his memories backwards, convinced his father to murder the Reiss family and get the Founding. But he can only send the memories because of the Attack + Founding combination. This means that if Eren didn't influence Grisha, he would never be albe to send memories back.
The only explanation is that there are two different timelines and we are watching the second one. On the first one, Eren managed to get the Attack and the Founding on his own and, to change the grim future, decided to interfere with the past and make Grisha get the Founding himself.
Shippers are angry that we got plot instead of shipping material and fanservice, their simple brains just can't take a little bit of trama.