Ah. Then that leaves the question of why their bones are so dense.
Best not to think too long on it.
Evolution doing strange and magically coming up with natural carbon fiber. 0.8 G is not enough to support such huge fauna.
I was expecting the whole gigantism to be caused by a hightened oxygen level, but apparently it's the same as on Earth. Would have explained the breathing system and such though.
2. Why are we using those fragile prop engines again?
3. The entire Na'Vi battle strategy
2)Hover capability probably, though you think they would have at least created some sort of jet hover vehicle that could work almost as well as the props did.
3)Agreed.
The real question is what happens in 7 years when Earth finds out that some alien species "Killing Human Beings! News at 10". Factoring in the few years to get the word around and the population motivated enough, and then the return trip including the further acceleration of space travel technology during this time period, I figure the Na'vi have anywhere from 15-20 years before the full might of Earth's military descend upon them and wipes them out, and then we just take all of the unobtanium anyways.
2. But they have hovering Jet engines, The Valkyrie uses them. The only reason I could come up with is that props tend to be more resilient to small debris. Explains why they can land in the jungle whitout problems.
Earth would find out much sooner. Both the ISV and Hell's gate have quantum communitcator devices. Instant communications but only 3 bit/hour. The RDA did have serious PR problems before though, so I don't know what the results 'll be. However, there are only 12 ISV's of which multiple are on their way, and whitout unobtanium they can't build more. So minimum 12 years before all ISV's are back(Assuming they come back, they need to be resuplied at Pandora(Avatar 2 ?)). Then 6 years before they arrive with the military at Pandora. Another 12 years before the first mining gear can arrive, and the another 6 years before the first unobtanium arrives on Earth. ( 36 years, assuming the ISV's fly constantly whitout pausing in orbit). I dunno if the RDA has enough financial support to survive that.
After all, unobtanium isn't needed for human survival. It's useful in fusion reactors, fancy maglevs and spaceships.
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