Yes, generally speaking the flatter the income distribution the greater mean happiness. However, even setting aside moral concerns about methods (which are trem

Yes, generally speaking the flatter the income distribution the greater mean happiness. However, even setting aside moral concerns about methods (which are tremendous), it's not a given we even _want_ to optimize for mean happiness. E.g. A society that possesses greater mean happiness may also possess more starvation, more work, or less robustness against future threats.