Rather than add to, change, or worse ... delete the Avatar listing I'm going to ask here about it. Primarily because I watched the film only once and may have misunderstood. There was no 'we could have avoided this' in Avatar as pointed out in the middle of the film when Jake says 'They will never leave Hometree'. He was ordered to get the Na'vi to leave the Hometree in a couple of months or the military would simply take it by force heavily implying that Hometree would be destroyed EITHER WAY which would have created conflict anyway. Screwing around with their time then becomes irrelevant, if they had done their jobs properly it would have ended with him giving the report to his superior officer who would say 'they won't leave eh? well, we'll just have to burn them out' which is what happened anyway. War was inevitable.