Imagine future world, different from that we have today. Future of child is no longer defined by history of his parents. Children are born and distributed randomly among parents in all over the world. Each parent educates random child. No ownership, no maternity. Just process of education. Each parent should educate 1 random child minimum.
Btw, I do not share this idea in real life and I would like to be parent for my child. However, this could be a good idea for scenario of a fantastic book.