Hard to believe Yu isn´t human(spoilers)

[Future Esthar]

Literature has to do with the deepness of things,not the cover.
And English is not my first language.

[Tavrobel]

Then your Literature teachers sucked at leading discussions and didn't tell you that the salient points of a work are what the authors give you.

You can't just make stuff up, pass it off as a theory, and expect people to think that you have some special insight into the plotline. Even if it is a theory, you have to have evidence that it works or is relevant to the plot; that would be the definition of the word theory. Otherwise, you can't say "this is the cover" when there is nothing left for the author to give. A story can only go as deep as its content and symbolism. You can't say "Yu Yevon isn't really there" when the game, the content of the story, says otherwise.

You can verify by equipping a weapon with the Sensor ability
You can verify with what Maechen says (after establishing his credibility in FFX, and confirming it in FFX-2)
You can verify with what Yunalesca and Mika say
You can verify by reading translations of the Ultimania guide, which is authorized by the authors

I reiterate: have you ever taken a Literature class? Stop trying to read into things that aren't there. You're doubting the ethos of the reliable characters and the authors, who created the work. If you wanted to create a theory that has no logic whatsoever behind it, you could just as easily dissect the Bible.

Even if English isn't your first language, the pattern to understanding a story is the same in every language.

[Future Esthar]

As I told you,dialogue is not everythinhg.Context,graphics and events show I am right.I actually know where is Yu Yevon.
He don´t talk too much when we find him but we can spot it by looking at the surroundings and the context.

[Bahamut2000X]

As I told you,dialogue is not everythinhg.Context,graphics and events show I am right.I actually know where is Yu Yevon.

I can't believe I'm being forced to honestly truly say this but...

Proof/Pics or it didn't happen.