Yeah, I wonder what benefit if any Eywa gets from giving the Na'Vi an afterlife. I'm skeptical that a giant planet-brain that doesn't live in a society of any kind would develop anything like our human concepts of morality and empathy, so I doubt that it does it just to be nice. I think it's likely it benefits from the arrangement somehow, but how?
LaCroix wrote:What if Eywa is the parasite?
That parallels my theory on its nature. I think it's a plant that manipulates the behavior of animals to benefit itself. It tells animals to spread its seeds in an optimum pattern, it tells herbivores not to eat it, maybe it tells them to eat its competitors and/or parasites instead, and it generally "gardens" the ecosystem to maintain conditions favorable to itself. That's the most sensible way I can think of for how such a thing could have evolved.
I don't see any glowing seeds attached to the animals when they do their death-defying charge (tm) to save the planet. So somehow Eywa has a wireless interface to them.
Eywa might have done something like download pictures of humans and human vehicles into their minds along with a command of "head in X direction and if you see something that looks like this, attack it". Although chemical signalling is a definite possibility. I suspect Eywa probably originally used that to control animals before the neural link evolved.
It is never mentioned that the mount doesn't give feedback of any kind. Actually, they have to learn how to use the interface, and Neytiri even say that Jake has to ride the banshee quickly to "seal the bond", so it has something to do with mental dominance.
Yeah, I wonder how much of the Na'Vi's banshee domestication traditions are actual practical techniques and how much is just superstitious mumbo jumbo. What happens if you plug yourself into one of the ones that runs away from you? What happens if you try to domesticate more than one banshee at once?
Edit: I also wonder what might happen if you plug two Na'Vi into each other. Really, a neurobiologist on Pandora might be able to do lots of fascinating science just plugging different things into each other to see what happens.