The author posted a question in Business, Finance
What is the role of self-interest in social choice theory? and got a better answer
And here it's like in the movieMimmo -He told me himself: "I feel such a personal dislike for the victim that I can't eat..."?
And it's like in the fmimino - He told me himself: "I have such a personal grudge against the victim that I can't eat..."
We know that public choice makes personal interest. That's what the role is.