Utilitarianism is a version of moral philosophy, initiated by Jeremy Bentham and refined and popularized by John Stuart Mill, which, true to its etymology, is concerned above all with the usefulness of human activity. Utilitarianism has been one of the most influential of ethical theories, and the one most widely used in ordinary 'common-sense' decisions. Jeremy Bentham (1748-1832) argued that an action should be judged, not simply on the happiness it appeared to offer the person who performed it, but according to its ability to benefit everyone involved.…