Avatar is the ultimate mash up of half the movies ever made.
It's stupid.
For some reason I feel like no one would waste their time on a movie that took 15 years to complete.
And I'm sure they changed some stuff around you know? It's not like they had everything they needed, they probably scrapped it and restarted a few times.
Cameron wrote an 80 page script. For such a damn long movie, they probably added stuff.
"In early 2006, Cameron developed the script, the language, and the culture of Pandora."
No doubt he stole from other sources by then.
And don't back talk me cause it's Wikipedia. It's a fine site and an experiment showed that wikipedia's information was just as valid as other sites.