Depends on the start.
If I'm surrounded by stone / marble I'll want to open with Mining > Masonry > Pottery > Calendar so I can get the stones improved and rush buy a Stone works.
If I'm surrounded by wheat / deer / bananas I'll want Pottery first to build a granary before a worker, and if theres no need for mining or calendar to improve resources I'll take Writing asap.
After worker techs + Writing are done, I want AH to reveal horses, and then Archery to build a couple of Archers, followed up with rushing to mathematics.
Playing as Korea or Babylon really makes bulbing Civil Service and still being able to reach Mathematics quick enough to build the HG really easy.
If I'm surrounded by stone / marble I'll want to open with Mining > Masonry > Pottery > Calendar so I can get the stones improved and rush buy a Stone works.
If I'm surrounded by wheat / deer / bananas I'll want Pottery first to build a granary before a worker, and if theres no need for mining or calendar to improve resources I'll take Writing asap.
After worker techs + Writing are done, I want AH to reveal horses, and then Archery to build a couple of Archers, followed up with rushing to mathematics.
Playing as Korea or Babylon really makes bulbing Civil Service and still being able to reach Mathematics quick enough to build the HG really easy.