Well if we are only looking at "5h = 3f = 8c early" then a mine on a river like the one I was talking about is worth more then a pure 3/0/0 tile. It would be 3.175 food. All of what you said is true, but the important fact for me is how many improved tiles every city has. Under the early settler plan, we have this when the third city is settle around (T44)
Capitol: 3 improved tiles (ivory, deer, fish)
Second: 3 improved tiles (wheat, river mine, pigs)
But keep in mind the the third city will use the pig for growth immediately. Now with the later city plan we have the following:
Capitol: 4 improved tiles (ivory, deer, fish, river mine)
Second: 3 improved tiles (wheat, mine, pigs)
But keep in mind the the third city will use the pig for growth immediately. The idea for the mines is not to work them while growing, but rather to grow to size 4 in the cap, let the 4th pop work the mine while building the settler or worker and then whip away. While building one of these the river mine is just as good as a 4 food tile. I think this is what you mean with "it's good if a city's configuration gets some important item to its >2-whip threshold earlier with a mine". Also you are not bothering me with specific micro.
CtH has the "BtS-style" 60h 2-whips.
Capitol: 3 improved tiles (ivory, deer, fish)
Second: 3 improved tiles (wheat, river mine, pigs)
But keep in mind the the third city will use the pig for growth immediately. Now with the later city plan we have the following:
Capitol: 4 improved tiles (ivory, deer, fish, river mine)
Second: 3 improved tiles (wheat, mine, pigs)
But keep in mind the the third city will use the pig for growth immediately. The idea for the mines is not to work them while growing, but rather to grow to size 4 in the cap, let the 4th pop work the mine while building the settler or worker and then whip away. While building one of these the river mine is just as good as a 4 food tile. I think this is what you mean with "it's good if a city's configuration gets some important item to its >2-whip threshold earlier with a mine". Also you are not bothering me with specific micro.

CtH has the "BtS-style" 60h 2-whips.
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Pitboss: PB39, PB40, PB52, PB59 Useful Collections: Pickmethods, Mapmaking, Curious Civplayer
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Pitboss: PB39, PB40, PB52, PB59 Useful Collections: Pickmethods, Mapmaking, Curious Civplayer
Buy me a coffee