I was too busy taking in the spectacle to care to be honest. That aside, they did explain the need to switch bases. Water guys reacting that way makes some sense at least considering how some people do react that way here on Earth - not too far to consider that happening with tribes. Exposition, I guess, not trying to defend it too much because I can't recall exactly where they did too much of it, I did'nt really care too much because it was with friends and we had a blast just looking at the film - I guess exposition would be a subjective thing - maybe too little/maybe not enough Unsure. Yeah but sky people not just killing off certain characters etc. just made me feel like its a bit too much sympathy to expect from them. Film is subjective, if you felt that way its perfectly fine. For instance, I abhor Space Odyssey 2001 and consider it a snoozefest but I'm aware of its merits and why people like it. Honestly, looking forward to Avatar 3 just to see the fire spectacle of it - and that's the prime reason. Just like how I'll likely watch the upcoign transformers film for the crazy big screen effects.