First, how does the A.I. deal with your points? I've seen other races hate me because I have a different ideology from them, even if I have equal numbers of points in each tree. How does it work? If I want to be friends with Good Civs, do I have to choose only Benevolent Points?

Second, does Slave Trading (Malevolent) override Luxury Trading (Pragmatic), or do they stack? And what do they actually do? I get the feel that Luxury Trading gives more money, but what about Slave Trading? Does it increase production? And does it hurt who you're trading with?