%0 Journal Article
%T Fission, fusion, and the simple view.
%A Tollefsen C
%J Christ Bioeth
%V 12
%N 3
%D Dec 2006
%M 17162673
暂无%R 10.1080/13803600601042129
%X In this essay, I defend three Simple Views concerning human beings. First, that the human embryo is, from the one-cell stage onwards, a single unitary organism. Second, that when an embryo twins, it ceases to exist and two new embryos come into existence. And third, that you and I are essentially human organisms. This cluster of views shows that it is not necessary to rely on co-location, or other obscure claims, in understanding human embryogenesis.