Is evolving reproductive technology ushering in a new age of eugenics?
b_b: I would be very careful about trying to engineer a human in any way. For every trait that has some binary function, there are myriads that do not, so I think it would be a rude awakening to try to fine tune height, for example. That said, I think its reasonable to test whether an embryo made in a test tube or a natural birth has certain genetic abnormalities, such as a trisomy or some other aberration that causes retardation, and then decide if this is a baby worth having.