It is now widely accepted that Research & Development in nanotechnology and biotechnology should be accompanied by research programs in ethics. This paper first critically assesses the initiatives that characterize this “ethical turn” by clarifying its underlying philosophical assump-tions and its consequences. Current trends in nanoethics enhance the concern for responsibility and develop an attitude of prudence. However nanoethics focused as it is on designers’ responsibility, reinvigorates the anthropocentric modern ideal of man as the lord of nature and master of the future. Technological objects are viewed only as means for human needs and sources of profit. An alternative approach to nanoethics considers artefacts as individual entities with a life of their own and takes into account the specificities of the nanoworld.
