I am not a fan of settling Scientists at all, except in obsoletes WE/SSE economy, so dont get me wrong, but there is a minor flaw in the "math" here. Its actually a pretty common flaw that gets applied to a lot of things, not just this kind of equation. The flaw is that 6 beakers in 1000 BC are worth WAY more than 6 beakers in 1000 AD. Same goes for other things, like Hammers, Gold, Commerce, etc. Personally, for me, Scientists are Academies or Techs, and later, 1/3 of a Golden Age, heh, but there is some merit to the early beakers thing. Add a Library and Monastery and those 6 beakers are nice in those middle BCs. This is a key point. I personally like to get close to Lib with bulbs, and tech up through Chemistry, using those extra 400+ years to give me time to get a better tech. My "basic" strategy almost every game is to bulb Philo, Paper, half of Education, and tech up through Gunpowder and Chemistry while doing so. Fairly easy to get Steel from Lib, even at Emperor, and so strong. Cannons + Horse Archers can take most cities, heh.