No, we can force unhappy citizens to become unemployed citizens(which if you are more unhappy than happy then unemployed citizens produce no yields at all while happy cities will have unemployed citizens producing +1 production as usual). Which is why Vox Populi has been leaning toward that happiness system if it's the best system to date. A majority of Positive Happiness occur from: Luxuries Buildings Religions (certain beliefs) Civics (exist in some other modmod I forgot you could also say social policies do provide happiness.) Wonders (some globally reduce needs and certain wonders provide naked happiness) Events Sliders Future Tech A majority of Negative Happiness occurs from: Population Muh Garrison Events We will resist our oppressor! Hell no, we won't go! War Weariness We yearn to go back to our motherland (some of this exist in city revolution and creating its independent state or returning to its former owner...) We won't attack our brothers in faith! Muh Emancipation!