A postscript to yesterday's blog flashed into my mind. When? In the middle of the night, of course. That's when I awakened to this disturbing thought: Our inherited genes are the result of the mating of our biological parents, right? So if science can potentially create a single person's biological child, with both egg and sperm created from that male or female person's own reprogrammed stem cells to form an implantable embryo, wouldn't you -- if you were that single person -- be giving birth to your own sibling? In this 21st century, will we eventually end up being our own grandpas? Country music, here we come.