Eliezer, given opinions on some variable X, majoritarianism is not committed to the view that your optimal choice facing any cost function is E[X]. The claim should instead be that the best choice is some average appropriate to the problem. Since you haven’t analyzed what is the optimal choice in the situation you offer, how can we tell that majoritarianism in fact gives the wrong answer here?
Eliezer, given opinions on some variable X, majoritarianism is not committed to the view that your optimal choice facing any cost function is E[X]. The claim should instead be that the best choice is some average appropriate to the problem. Since you haven’t analyzed what is the optimal choice in the situation you offer, how can we tell that majoritarianism in fact gives the wrong answer here?