Board Thread:Manga/@comment-44086949-20191205133131/@comment-37493549-20191224133435

The evidence is that all the characters involved repeatedly state that it's a memory, and you can't touch other people's memories. I said Grisha's not pretending to hug Zeke because he's earnest in his attempt. He doesn't walk up to the apparition with the intention of holding his arms in a way to fool Eren that he's touching it. He's doing it because he's desperate to feel close to the son that he abandoned and show him affection before he dies, and this is as much as he can do. Flapping his arms through Zeke like Kylo Ren sticking his lightsaber through Luke would be a ridiculous thing to do and would totally ruin the emotional impact of the scene. Everyone present, and every reader that's paying attention, is already fully aware that it's just a memory.

The absence of evidence contradicting your insane theory is not permissible as evidence in favour of it. That's Russell's teapot.

The author doesn't depict Grisha falling through Zeke because he's already made it extremely clear that he's merely viewing a memory. Every character involved in the scene repeatedly states that it's only a memory, before and after the fact.

It's extraordinary claims that require extraordinary evidence. Your claim of physical time travel, intangibility, invisibility is the extraordinary one because it contradicts everything that we're seeing and everything that the characters are saying. The claim that it's a memory and obviously nobody is touching each other is mundane and obvious, it's the default position.

I haven't even mentioned the gigantic plot holes that are apparent to anyone who's given this a moment's thought. If Grisha (the founding titan) was able to touch Zeke (a titan of royal blood), don't you think he would have done something about the titans attacking Shiganshina? You know, the very reason he went there to acquire the founder in the first place? Or failing that, perhaps use his asspull physical time travel powers that you also believe Grisha posesses?