Actualizable potential, reproduction, and embryo research: bringing embryos into existence for different purposes or not at all.

Perhaps he thinks that he need not bother to keep (ii) and (iii) apart because (i) supports one as much as it supports the other. We would, however, like to concentrate on (ii). Our argument is to the effect that there is a plausible view of the moral status of human embryos, according to which the truth of (ii) does not follow from the truth (i). Nor does the truth of the weaker claim (iv) follow: