natural selection

The question is, who will survive and reproduce? For starters, people shouldn’t have children they can’t support; they shouldn’t expect the government—i.e., the taxpayer—to pick up the slack. This way, the population of this country—and this planet—will get back down to a sustainable level, which it certainly isn’t at now.

Beyond that, what kind of people can support children? The one characteristic that you definitely will need in the modern world is a decent level of mathematical-logical ability. That’s what the modern world of science and technology is based on, after all. This is where the decent jobs are, and it’s only going to become more that way. But over time you will get a human population with a high level of mathematical-logical ability if people just don’t have children they can’t support.