J Med Ethics doi:10.1136/medethics-2012-100920 Published online 22 February 2013

Authors: Johann A R Roduit, Holger Baumann, Jan-Christoph Heilinger

“Bioconservatives, such as Michael Sandel, Leon Kass and members of the former US President’s Council on Bioethics, have expressed their scepticism about enhancement technologies, and argued against bioliberals and transhumanists by resorting to the concept of perfection…But what exactly do bioconservatives argue against when they argue against perfection? And how do they make their case?

In the first part of this paper, we show that—paradoxically—bioconservatives themselves explicitly embrace specific conceptions of human perfection…

In the second part of the paper, we ask whether bioliberals in fact (implicitly) advocate a particular conception of perfection…”

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