Yeah... um... I'm on this subject but I think Koshling knew more about it and he'd probably respond to a PM on it. In my experience, it appears the AI vastly UNDERstaffs its defenses and attack forces. It's spending a lot on property control though but probably not much more than I do when playing. From what I can tell, some of the AIs are really just too excited to grow and don't do so with enough care. Then when they get in a panic about their economic situation they start building research and such and it's a total waste of time as they aren't investing into their nation's potential but rather end up grasping for the immediate needs. Since they stop the long term investing, even though it won't solve their problems within a few rounds, they hit that wall and fall behind and get more and more nervous about being behind in tech and trying to make up with it by building research which puts them yet further behind. What bugs me about this is I haven't been able to figure out how they can build research while they have other things they can do... the construction selection routine doesn't seem to allow it until the last evaluation which I find very odd since they are seen doing this when they clearly would have better things to do!