Lego Mistborn
Aethers in Tress seem to take over their hosts aggressively, probably without the host's permission, whereas we see in The Lost Metal with TwinSoul it's more willing. Is this related—and how—to the corruption of aethers on Lumar?
Brandon Sanderson
Yeah, it is related. You have the main aether planet, which we just named but I can't... so Kalyani named it for me. Well, Kalyani and Rahul. I'm relying on them a lot for this planet, and they actually just sent me a five-thousand-word world guide for it. [...] They could tell us how to pronounce it. "Dhatri" might be how it is?
Regardless. On the main planet. So the idea here is they're very formalized, how you interact with the aethers. But on some other planets (not just Lumar), aethers have gone that are not connected to the main set of them on the main planet, and what's going on on Lumar is directly related to how that separation happened.
So that answer is a long-winded yes.