Looking at the future of humanity section:

> 10,000 - If globalization trends lead to panmixia, human genetic variation will no longer be regionalized, as the effective population size will equal the actual population size

> 10,000 - Humanity has a 95% probability of being extinct by this date, according to Brandon Carter's formulation of the controversial Doomsday argument, which argues that half of the humans who will ever have lived have probably already been born.

So in 10,000 years we're either all going to look the same or we'll all be dead? Yikes.