http://www.scu.edu/ethics/practicing/decision/calculating.html
Authors: Velasquez, Manuel; Andre, Claire; Shanks, Thomas; Meyer, Michael
Source: Markkula Center for Applied Ethics
Year: 1989
Abstract:
Utilitarianism offers a relatively straightforward method for deciding the morally right course of action for any particular situation we may find ourselves in. To discover what we ought to do in any situation, we first identify the various courses of action that we could perform. Second, we determine all of the foreseeable benefits and harms that would result from each course of action for everyone affected by the action. And third, we choose the course of action that provides the greatest benefits after the costs have been taken into account.
Many of us use this type of moral reasoning frequently in our daily decisions. When asked to explain why we feel we have a moral duty to perform some action, we often point to the good that will come from the action or the harm it will prevent. Business analysts, legislators, and scientists weigh daily the resulting benefits and harms of policies when deciding, for example, whether to invest resources in a certain public project, whether to approve a new drug, or whether to ban a certain pesticide.