utilitarianism

According Utilitarianism’s Greatest Happiness Principle, we are morally required to do whatever action will maximize happiness overall. In your post (250 words and two substantive responses to others, as usual) explain ONE of the objections to Utilitarianism. Do you think this objection is definitive, or can it be successfully answered? (Use the pdf on Objections to Utilitarianism and the readings as the basis of your post.)