Since the Na’vi have had the ability to download information and share it in a massive network for long periods of time (evolutionary timescales), they should b

Since the Na’vi have had the ability to download information and share it in a massive network for long periods of time (evolutionary timescales), they should be way ahead of us in terms of technological development. The information they have access to appears to be someone's entire mind/memories/thoughts/whatever... This would be a HUGE amount of completely unsorted data. Sifting through all of this to find usable information would be very difficult. The comparison to writing and the internet is false. In both cases, data is (to some degree) indexed. Want to build a robot? Search for "how to build a robot" and you have a good place to get started. In fact, they only time they show anyone making direct use of the link (as opposed to a spiritual use) is when they ride animals, which is a link with a single animal.