Mod potential thread 1. Should Calculus appeared in the game as a technology that appeared by the closing stage of Renaissance Era? (Because Modern Calculus as we known today was developed in Europe in the 17th Century by two persons. Issac Newton and Gottfried Leibnitz, https://en.wikipedia.org/wiki/History_of_calculus and it saw extensive applications by the following era, among the first was gunnery. 2. If so 2.1 Tech Boost 2.2 Tech Effect. What should the benefits be once the research is completed? New units? New buildings? New wonders (or should it be a dummy tech that appeared as a gateway similar to Civ3 techs which does nothing beyond a prereq) Well because the existing tech tree did progress toooooo fast.