Is the future more or less human? Differing views of humanness in the posthumanism debate

Abstract

A debate has emerged in the bioethics literature about the use of biotechnology to modify human nature. A failure to define humanness has produced conceptual confusion in this debate. We draw upon recent social psychological work on folk concepts of humanness and dehumanization to analyse the understandings of humanness that underpin the rival positions. We argue that advocates and opponents of human nature modification employ distinct conceptions of humanness, and that their differing evaluations of modification make sense in light of these conceptions. Advocates view modification as the enhancement of a non-essentialist sense of humanness that takes us further from animal nature. Opponents..