i usually automate in the very start, if you do stuff manually first and automate them later they start replacing everything instead of filling in the empty land.
automateds to pretty good in the long run if you use it from the beginning...saves a lot of time too with the pollution and everything.
i use manual only when building road/rail networks, that can be done when most workers are still automated. then i let em road/rail the rest of the land.
automating after getting republic/monarchy is good, irrigation is pretty useless in despotism but they automated workers do it anyway.
automateds to pretty good in the long run if you use it from the beginning...saves a lot of time too with the pollution and everything.
i use manual only when building road/rail networks, that can be done when most workers are still automated. then i let em road/rail the rest of the land.
automating after getting republic/monarchy is good, irrigation is pretty useless in despotism but they automated workers do it anyway.