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“Preference Change and Interpersonal Comparisons of Welfare1”

Suppose that we agree that for questions of justice in a pluralistic society, we need a public standard of welfare. An appropriate public standard of welfare will have to meet the following two requirements. First, its conception of each person's welfare should, to the greatest reasonable extent, be something that each person can recognise as encompassing the things she wants for herself and as giving these things weights that reflect the relative importance she gives to them. Second, it should be sensitive to the fact that reasonable people hold conflicting conceptions of what constitutes an individual's welfare. It should therefore, to the greatest reasonable extent, respect neutrality of judgement by refraining from endorsing any particular conception of welfare as superior to any other.