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Ranges of variation in utilitarian ethics

    We have already seen how utilitarian theories could vary in two respects:

    1. Does it define happiness hedonistically or in terms of preferences?

    2. Does it emphasize maximizing total happiness or average happiness?

    Utilitarian theories of ethics can also vary in several other respects, including:

    1. How "rigorous" the principle of utility is taken to be; whether it requires one to "maximize" aggregate utility, just not reduce it, or something else.

    2. Whether one is held accountable for all the consequences of one's decisions, or only some subset of them, e.g. those within a certain limited period of time, or just the "reasonably foreseeable" ones.

    3. Whether it applies the principle of utility "directly" (as act utilitarianism does) or "indirectly" (as rule utilitarianism does).

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