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Aristotle and most other commentators recognize that ethics must be ultimate focused on the end goal of providing some good for others. The utility function is defined as providing the greatest good for the greatest number. In tribal society ethics only extends to the members in good standing of the tribe. Most people use a hybrid version which gives greatest weight to the good of the family and then ratchets down from there to the community, the local government, the national government and for people as a whole.
- Aristotle Nichomachean Ethics
- Wikipedia Utilitarianism https://en.wikipedia.org/wiki/Utilitarianism