Lets discuss about the value of the different yield types! (YEAH) I have observed very often AI completly neglecting food for working specialists, and this already in renaissance. Sometimes all of the AIs cities were running only as much food to get another citizen after 20-30 turns. I think, in the time before industrial age, a low focus to food is compensated to some degree by the AI bonuses, but by the nature of exponential food cost, it gets useless. By that time, I often have outgrowed the AI already by around 5 or more citizen per city, capital sometimes 10. Not having any happiness issues by that time indicates, that my big cities are running more efficiant than the AI ones and also, that the AI isnt managing its cities to an optimal degree. A short request to Gazebo revealed this: Spoiler AI Yield Type Values : UPDATE Defines SET Value = '0.5' WHERE Name = 'AI_CITYSTRATEGY_YIELD_DEFICIENT_FOOD'; UPDATE Defines SET Value = '1.0' WHERE Name = 'AI_CITYSTRATEGY_YIELD_DEFICIENT_PRODUCTION'; UPDATE Defines SET Value = '1.5' WHERE Name = 'AI_CITYSTRATEGY_YIELD_DEFICIENT_GOLD'; UPDATE Defines SET Value = '2.5' WHERE Name = 'AI_CITYSTRATEGY_YIELD_DEFICIENT_SCIENCE'; INSERT INTO Defines (Name, Value) SELECT 'AI_CITYSTRATEGY_YIELD_DEFICIENT_CULTURE', '2.5'; Food is valued very low. (Gazebo noticed, the AI takes into account only the excess food, not the base food, so please keep that in mind) I would like to see here a higher value for food but it have to be tested, how much is healthy. Valuing gold higher than production seems wrong to me, cause often, hammer is worth twice as much as gold. Faith isnt in this list, cause its hard coded with 0.5 like food, this seems also too low for me, cause of the very rare nature of faith. To clarify (I hope its right) the AI tries to generate yields in this percentual composition: 6% 12% 18% 29% 29% 6% Also.... if an AI citizen is able to work a tile with 3, or a tile with 14, it would choose the , cause its in AIs eyes worth more. So people, seems this right? What do you think?