Give civilized man time to gather all his machines about him, and he will no doubt easily beat the savage; but if you would see a still more unequal contest, set them together naked and unarmed, and you will soon see the advantage of having all our forces constantly at our disposal, of being always prepared for every event, and of carrying one's self, as it were, perpetually whole and entire about one.

Rousseau indicts man's reliance on machinery and the things he has surrounded himself with in order to survive. If we were to lose all that makes us the "dominant species" and instead have to face nature purely as we are, there is no way we could survive. Avatar plays off of this criticism by creating the Na'vi as savage to Pandora, but that is exactly what they hold to their advantage. Jake has to learn how to use his new body to cohabitate on Pandora, where the "savages" learned how to coexist simply by embracing the nature around them. The humans struggle for survival on Pandora, relying on machines to insert themselves into the environment, and even to breathe on the planet. Take away all the machinery, and leave the humans vulnerable to the environment of Pandora, then they are easily out-matched.