If we ever achieve a true AI. I think were more likely to initially achieve a ridiculously powerful system which will be able to weigh options and outcomes far more effectively then any human or group of humans ever could but would still ultimately depend on human programmers to guide its goals (thus drastically coloring any outcomes.) But by that point we will beginning to step towards extreme integration of the human mind and machine, thus eventually creating a human network of so that can draw from the processing power of a billion brains, and a billion minds which have instantaneous access to all information to guide their individual goals. Such a reality would create a hyper democratic society while diminishing one of the biggest flaws of democracy (a largely uneducated society who is easily tricked into voting against their own interests.)