 Another version of the eugenics concern points out the risk of a slippery slope: the claim is that cloning will lead to objectionable forms of eugenics—for example, coercive eugenics—in the future. After all, historical cases of immoral eugenics often developed from earlier well intentioned and less problematic practices (for a history of eugenics as well as an analysis of philosophical and political issues raised by eugenics, see Kevles 1985 and Paul 1995). According to Sandel (2007, Ch.5), for example, ‘liberal eugenics’ might imply more state compulsion than first appears: just as governments can force children to go to school, they could require people to use genetics to have ‘better’ children.