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Act utilitarianism is a utilitarian theory of ethics that states that a person's act is morally right if and only if it produces the best possible results in that specific situation. Classical utilitarians, including Jeremy Bentham , John Stuart Mill , and Henry Sidgwick , define happiness as pleasure and the absence of pain.
In contrast, act utilitarians judge an act in terms of the consequences of that act alone (such as stopping at a red light), rather than judging whether it faithfully adhered to the rule of which it was an instance (such as, "always stop at red lights"). Rule utilitarians argue that following rules that tend to lead to the greatest good will ...
Act utilitarianism maintains that an action is right if it maximizes utility; rule utilitarianism maintains that an action is right if it conforms to a rule that maximizes utility. In 1956, Urmson (1953) published an influential article arguing that Mill justified rules on utilitarian principles. [53]
Two-level utilitarianism is virtually a synthesis of the opposing doctrines of act utilitarianism and rule utilitarianism. Act utilitarianism states that in all cases the morally right action is the one which produces the most well-being, whereas rule utilitarianism states that the morally right action is the one that is in accordance with a ...
In social choice and operations research, the utilitarian rule (also called the max-sum rule) is a rule saying that, among all possible alternatives, society should pick the alternative which maximizes the sum of the utilities of all individuals in society.
In ethics, Smart was a defender of utilitarianism. Specifically, he defended "extreme", or act utilitarianism, as opposed to "restricted", or rule utilitarianism. The distinction between these two types of ethical theory is explained in his essay Extreme and Restricted Utilitarianism. [14] Smart gave two arguments against rule utilitarianism.
Rule consequentialism exists in the forms of rule utilitarianism and rule egoism. Various theorists are split as to whether the rules are the only determinant of moral behavior or not. For example, Robert Nozick held that a certain set of minimal rules, which he calls "side-constraints," are necessary to ensure appropriate actions. [2]
He defended a version of rule utilitarianism in "Toward a credible form of utilitarianism" (1963) and performed cultural-anthropological studies in Hopi Ethics (1954). In A Theory of the Good and the Right , [ 10 ] Brandt proposed a "reforming definition" of rationality , that one is rational if one's preferences are such that they survive ...