Being children of opportunity is not a crazy dream. To do this, the technique is already useful in genetics laboratories and a team of researchers from the city of Maryland, for example, has achieved an efficiency of 85%. Of course, all the sessions have been done with animals or at least so we have been told to us.
As techniques for in vitro fertilisation improve, practical problems are decreasing, but ethical drawbacks are increasing. In addition to the choice of sex, new techniques allow to prevent some diseases. Is the path of homogeneous societies that science fiction has often taught us open?