> What function do I use? Traditionally you use sum, which gets you total utilitarianism. Some have advocated avg which gets you average utilitarianism. https

> What function do I use? Traditionally you use sum, which gets you total utilitarianism. Some have advocated avg which gets you average utilitarianism. https://en.wikipedia.org/wiki/Average_and_total_utilitarianism https://en.wikipedia.org/wiki/Average_and_total_utilitariani... > root-mean-squared Why? > Can I perform arithmetic on utilities from two different agents? This is called "interpersonal utility comparison", and there's a ton of literature on it. Traditionally utilitarians have accepted it, and without it ideas like "sum the utility across everyone" don't make sense.