In warlords and vanilla the GNP in the demographics screen was perfectly understandable and actually useful in the early game. Your GNP value was your raw commerce produced - any costs like maintenance unit upkeep and the like. Now with the BTS the GNP in demographics screen doesn't make a whole lot of sense whatsoever. Anyone know the mechanics behind them? why did it change? and how exactly does the gnp graph work(which actually includes specialists and stuff like shrines right?)?