Thank you for all the advice. After I finish I will reload and try alternative approaches. Anyone else reporting victories or defeats yet? Immortal, NHNE, 0700AD-1150AD AD1060: first contact. Spoiler : The two civs had different priorities. They are builders, not thinkers, and hogged many wonders. AD1150: state of the union. Spoiler : I could trade those two techs away once they finish astronomy... and I finish machinery & optics! Or I could do something else. I sometimes find it helpful to sit for a few minutes and think about each turn before making moves. Someone other player got the circumnavigation bonus, possibly because I sold my map. Can’t be helped.