I've got a question about research. It seems that 4 of 5 games, I always find myself 2-5 techs behind other civs when playing on Noble (vanilla C4) and a research rate at 80% or higher throughout the entire game. I'm able to win consistently on Noble, but I think having the tech advantage on higher levels would come in handy for shorter wars and quicker victories on higher levels. I don't like to trade my newly discovered techs, as I'd still wind up behind, with a stronger civ. Most of the time, they offer you crappy deals anyway. What's the secret to getting ahead?