dudeSDCA
Prince
I tend to go after civic choices, sometimes at the cost of growth or production (So Meditation, Democracy, Code of Laws, Philosophy, etc.). I'll almost always take time to research food or production techs (Crop rotation). Later I will B-line up to Navigation (for the colonist upgrade), and Economics (for the civic so I can hurry production), then I'll go after Liberalism for the free tech and Liberal civic, and then Railroad.
From watching which techs the AI researches (via espionage), they all do tend to research pretty similar things in a pretty similar order (I would expect an expansion AI to grab navigation instead of gunpowder). But what I do notice is that it seems it frequently takes more turns for them to get techs than me...which makes me think that they're not putting as much emphasis on science.
EDIT: Also, this issue continues into the modern age. So I don't know if the issue is the "order" in which they research the techs, but the overall weighting of tech vs. money vs. production. Maybe they're undervaluing science-producing buildings to build military buildings?
From watching which techs the AI researches (via espionage), they all do tend to research pretty similar things in a pretty similar order (I would expect an expansion AI to grab navigation instead of gunpowder). But what I do notice is that it seems it frequently takes more turns for them to get techs than me...which makes me think that they're not putting as much emphasis on science.
EDIT: Also, this issue continues into the modern age. So I don't know if the issue is the "order" in which they research the techs, but the overall weighting of tech vs. money vs. production. Maybe they're undervaluing science-producing buildings to build military buildings?