Board Thread:Manga/@comment-27321453-20190908104148/@comment-1327106-20190919011238

Jadoo666 wrote: I can´t understand how Eren can change the past. I understand the Attack Titan power fo see the future, but I can´t see how Eren talked to his father in that memory and changed the past.

There are a couple of problems in that you're looking at the story the wrong way. As Zeke says, you can't change the past, and Eren didn't. He made the past happen. I don't agree 100% with everything in this post, but there's a really good infographic on Reddit (click to see the spoiler) that breaks down how the time travel works in Attack on Titan. The images and stick figure comics should help you a lot with the visualization if you can't do it on your own.

https://www.reddit.com/r/ShingekiNoKyojin/comments/d1q0v9/manga_spoilers_the_complete_guide_to_chapter_121/

The post showcases how time travel works in Attack on Titan versus time travel in other media and then how/why Eren is able to interact with this father.