The scenario I was describing is a little different: suppose we could detect spina bifida in an embryo before implantation. We could simply opt not to implant t

The scenario I was describing is a little different: suppose we could detect spina bifida in an embryo before implantation. We could simply opt not to implant the embryo; it’s not the same as abortion, but it does prevent a person with spina bifida from existing. Is that bad in your way of thinking?