Bamspeedy
CheeseBob
Most of the time (but not always), yes you would have to commit to it early. That is why building a few warriors first to explore is so important (and makes expansionists much more powerful because you get the extra scout 4-5 turns before anyone else has them), so you can get a feel for how much room you have before the first settler would be complete.
With ICS (and works best with an industrious civ), you can have roads in place, so you build a city the very same turn the settler was built (except when you have to cross rivers). Spending time having settlers walking around is lost production.
Actually, on this map, the capital having a granary could build a settler every FOUR turns! From my calculations, the only thing that could possibly even compete with that is by using ICS where you build cities the same turn the settler was built, and having every city building settlers ASAP.
Another great tactic is using an early OCP, with a late ICS. You build your 'core' cities OCP style, so they can grow to large sizes and be very productive, then ICS your high-corrupt areas. You build infrastructure and military in your OCP cities, and the ICS cities no infrastructure (or minimal infrastructure, like just a marketplace and aqueduct) and irrigate these ICS cities to get specialists and improve score and build just workers/settlers in these cities or just cheap military units that you will upgrade. Cartouche Bee calls this 'fringe ICS'.
I think alot of people use a style that is in between ICS and OCP. They let each city use 12-15 tiles. A city can only use a max of 12 tiles up until hospitals anyways (and that's a very long period of the game!). And if the game does last until after hospitals, the cities can still benefit a little from the hospitals.
With ICS (and works best with an industrious civ), you can have roads in place, so you build a city the very same turn the settler was built (except when you have to cross rivers). Spending time having settlers walking around is lost production.
Actually, on this map, the capital having a granary could build a settler every FOUR turns! From my calculations, the only thing that could possibly even compete with that is by using ICS where you build cities the same turn the settler was built, and having every city building settlers ASAP.
Another great tactic is using an early OCP, with a late ICS. You build your 'core' cities OCP style, so they can grow to large sizes and be very productive, then ICS your high-corrupt areas. You build infrastructure and military in your OCP cities, and the ICS cities no infrastructure (or minimal infrastructure, like just a marketplace and aqueduct) and irrigate these ICS cities to get specialists and improve score and build just workers/settlers in these cities or just cheap military units that you will upgrade. Cartouche Bee calls this 'fringe ICS'.
I think alot of people use a style that is in between ICS and OCP. They let each city use 12-15 tiles. A city can only use a max of 12 tiles up until hospitals anyways (and that's a very long period of the game!). And if the game does last until after hospitals, the cities can still benefit a little from the hospitals.