"I wouldn't want [the] government [to] tell people that they had to do it, but it is interesting that it would benefit society. So, where's the split? The split would only occur if you had two groups of people who never came into contact with each other. Once you have contact, you have gene flow and that destroys the split. That won't happen in Western society. That won't happen in America, Europe, Japan, and now the upcoming China, and Southeast Asia because there is [what] a geneticist would call a gene flow, and the gene flow is so significant it's going to stop that from happening. / I worry about the poorest countries in the world. If they're not brought in as members of the global family, there could be something. But it's pure speculation. It was meant to get people to think, not to say that it was definitely going to happen."