Many of the problems we face today — cancers, heart disease, maybe even the high divorce rate — have come to torment us because our bodies and our brains were designed to handle life the way it was for us fifty thousand years ago. Fifty thousand years from now in the year 52,006 (give or take a few millennia), our species may finally have evolved to handle life the way it is now, with overcrowded cities, air and water pollution, video games, polyester, glazed doughnuts, and a gross imbalance in the distribution of resources worldwide.