Preserving the Oneida Language

I have an unwritten story I've been banging around in my head for a long time with a species called the Vah-Zyahl who are a tribemind (via technology) who can change bodies like we change clothes (actually, more easily) and travel around the Omniverse via portals that can go from anywhere TO anywhere. The reason this is relevant is because they're knowledge and information preservers. They have this collective memory stored in a series of Dyson Spheres in their home universe (which is devoid of sentient life, save for them) with so much information storage and such insanely high processing and access speeds that to say WATSON looks like an abacus compared to their computers would be vastly understating things. They access this library of knowledge instantly through transdimensional subspace signals.

Anyway, preserving languages would be among the things the Vah-Zyahl would do. Hell, sometimes they even preserve entire cultures by moving dying cultures onto the inner surface of one of their Dyson Spheres, if it wouldn't badly damage the culture to do so. If it would, they find other ways of doing so. Given that they can travel through countless trillions of alternate universes, one option would be pretending to be shamans and leading a dying civilization to a version of that culture's world that will let them continue.

But other methods include using their scanners, which are incredibly sophisticated. Their scanners can image right down to the subatomic level. They can even make exact copies of people; they usually only do that to preserve the knowledge in a person's mind. But if the person is open to it, they do sometimes add people to their tribemind. Vah-Zyahl are actually not one species, but a huge variety of species that have effectively become one species by the fact that almost all of them are basically digitized consciousnesses riding around in meat-puppet bodies.

They're also working on time travel, so they can invisibly scan and preserve knowledge and cultures lost to time. They also preserve extinct species of plants and animals, and even entire ecosystems. One of their goals is to have an entire Dyson Sphere devoted to different times in Earth's past, so they can preserve the dinosaurs and trilobites and so on. :-D