Should We Retire Derek Parfit?

For nearly a generation, Derek Parfit's arguments in his 1984 book Reasons and Persons have shaped debates about our moral responsibilities to future people. Struggling to accommodate Parfit's insights, philosophers and bioethicists have minimized or accentuated obligations to the future in ways that defy ordinary moral intuitions. In this issue, Robert Sparrow develops the troubling implications of the views of two leading theorists whose work favoring human genetic enhancement is influenced by Parfit. Sparrow believes they return us to the horrors of early twentieth-century eugenics. But the real problem may be a purely theoretical one: the unfortunate influence of Parfit.This is no place to review all of ..