We consider a model of successive generations with a fixed proportion of selfish and altruistic members in each individual's offspring. In contrast with the others, selfish members bequeath nothing to their own children. We assume that parents cannot recognize their heirs' types and that...

This paper reviews the SWFL approach to social choice. It does not attempt to be a complete and systematic survey of existing results, but to give a critical assessment of the main axioms and their role in filtering the ethically relevant information, in particular the measurability and...