There’s a lot of innovation going on in China these days, but perhaps not all of it is good. Chinese fertility centers are going well beyond American practices, using genetic diagnosis to influence how children conceived through in vitro fertilization will turn out. On one hand, the potential for improving human health is enormous. On the other hand, I am uneasy at the prospect of the power this gives parents. I don’t trust people to take so much control over the future of human nature.
Sometimes you hear it argued that the complex nature of genes will prevent major feats of genetic engineering. That may be selling short future advances in Big Data and biomedicine, but even minor changes in genetic diagnosis and selection could have significant effects. Maybe you can’t choose to have a child who will be happy, but you might be able to lower the chance of your kid having depression or social anxiety by some small amount. Over the course of generations, that will exert great influence over the nature of the human experience.