cswen

I've been playing the original GCII for four years and I think I know it inside and out. I finally broke down and bought the expansion pack. I love it, but there are a few things I need clarified. I am playing my first game with the Yor...does it do me any good to trade with another civilization for a tech that isn't in the Yor tech tree? Can I use any tech I trade for? On the trading screen I see the other civ's have techs with an asterisk by them.