I'm sure this has emerged as a "pet peeve" of other players as well, but its not just that its frustating, rather it's not logical. What I'm referring to is that you're Civ X and your UU requires copper. But, as the game progresses you discover there is no copper anywhere reasonably near you. What gets me is that isn't the fact that your civ had copper what gave rise to their UU? I realize I could cheat w/ the editor, but I don't like doing that.... and its not like it happens that often. But it happens enough to pique me. AND I DON'T LIKE BEING PIQUED!