I have a question about trading. Everyone keep saying that you can research techs for the purpuse of selling them for gold og gpt. My problem is: the AI never got more than a few hundred gold in their treasury and when i ask for gpt the foreign advisor changes to "they would never accept such a deal" because they don't got any surplus gold. It seems like that the AI set their science/tax rate exactly so they neither gain nor lose gold. In my last game i kept checking everyone if they could afford gpt. First when i reached the late industrial age(and they were in early industrial age) one of the other nations was able to afford it while the rest still wasn't able to. I'm currently playing regent. Can someone explain to me why the AI is so poor?