Board Thread:Manga/@comment-27321453-20190908104148/@comment-37493549-20190922211055

Ye but he still has to actually ACT in order to get the future to happen. He won't just sit in a deckchair. Because he has aspirations and motivations just like everyone else, and the actions he does because of those motivations are what makes the future the way it is.

Like the whole reason the future he saw is going to happen, is because Eren (and everyone else in the world) has the motivation to MAKE it happen. Ye you can say 'well why doesn't go play video games all day or shoot himself in the head, THAT'll change the future'. The reason is because he has no REASON to do that, he doesn't WANT to do that, and thus that's not what he does.