Haven't we come a long way... It used to be that you were only allowed to discuss certain ideas within strict parameters but not to attempt to support or prove them. (Perversely denying the right to insist something is proven is consistent with the Scientific method, in which nothing is absolute and proven except mathematics; theories, even so-called laws, are just shown to match current observations and not only are they open to later attempts to refute or modify, they are not good theories unless they actually include predictions which allow for such attempts.) Today, it seems to me that though scientists can now discuss and support theories without fear, even the most rigorously examined and tested theories can still be dismissed out of hand by some, not because they conflict with observable facts, but for personal reasons based on doctrine or its new bedfellows ideology and profit. Thinking about attempting to model all this real world societal behaviour in any simulation let alone a game like Civ actually made me smile. I realise much as people push for realism in Civ that sometimes for me the simplicity of the model is refreshing and playing the game and experiencing it is a form of escapism.