For utilitarianism, you need to choose a utility function. This is entirely based on your preferences: what you value, and who you value get weighed and summed to create your utility function. I don’t see how this differs from selfish egoism: you decide what and who you value, and take actions that maximize these values.
I see a difference in the word “summed”. In practice this would probably mean things like cooperating in the Prisoner’s Dilemma (maximizing the sum of utility, rather than the utility of an individual player).
I see a difference in the word “summed”. In practice this would probably mean things like cooperating in the Prisoner’s Dilemma (maximizing the sum of utility, rather than the utility of an individual player).
How do you choose to sum the utility when playing a Prisoner’s Dilemma against a rock?