Also, in one of the side quests, an Amaurotine chides you for your flashy clothing because it encourages disparity, and talks about the spark of jealousy and violence that lurks in all our hearts.
Which means that, even if it was in the past, the idea of violence/conflict between people was known and their ancestors at least likely participated in it. It also states they acknowledge their own potential for such things.
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What I don't get is how they ever thought to break even with sacrificing the world's life. 75% of the population to get Zodiark to save and restore the world. Then, apparently, we later kill that saved world to get that 75% back? Doesn't that violate the purpose for which Zodiark was originally summoned? Wasn't Zodiark supposed to be a manifest embodiment of the world itself? If I were Zodiark, I'd have told them to piss off with that last one. Perhaps Zodiark had to grant its summoners wishes' (chicken and egg with gods/followers) or is that thirsty for aether (but, as a planetary primal, why would it need their permission?)?
I actually find myself disappointed.
At least I got great Mage: The Awakening vibes from the final zone and plot. Replace "Amaurot" with "Atlantis" and I've pretty much seen this conflict and arguments before.
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Also, I think it bears remembering that we're seeing Emet-Selch's memories of Amaurot, not the real thing. This doesn't mean it's a total lie, it is, in fact, likely history exactly as he remembers it. But as HE remembers it (and after millennia of longing and struggle in its name at that).
I actually like this. The notion of how subjective perception colors (or creates) reality is a perennially interesting one to me. Emet-Selch loved his people, his city, their values, and the sacrifice they made to save the planet. But I have to wonder how Amaurot would look constructed by the memories of a contemporary foreigner or one of the dissidents who eventually summoned Hydaelyn.
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Final point: The Amaurotine people sacrificed greatly, and nobly, to save and restore the planet. Looking at these two choices alone, Emet-Selch could have had a point about the difference in moral fiber between ancient and man-divided. But, on their third choice, the pro-Zodiark Amaurotine people throw this moral high ground away. They sought to UNDO the willing sacrifice their fellows made, and to push the burden for their actions onto future generations without their consent. All BEFORE there was any excuse about a divided star and degraded souls.