Will humans look a lot different in 2 million years? A popular view is that we will become less muscular, less hairy and less toothy, but more cerebral and ocular, and start approximating the so-called Greys of sci-fi fame.
I don’t think so, though. I think our evolution is complete. Our genes on average are stagnating or weakening from generation to generation, and we will die out soon. Why do I think this? Because of how we are cheating natural selection.
If you look at the rules of evolution theory, we depend on natural selection to ensure a strong genotype. In plants and animals alike, natural selection is the culling machine that eliminates the unfit individuals, and their associated genomes. But when it comes to humanity, we have outsmarted many of the mechanisms of natural selection. For example, very little running is required in making a purchase from your local butcher, and your chances of ending up with a platefull of succulent lamb chops, whether you are an exceptional sprinter or a coach potato, are equal. Maybe we have finally arrived at the point where survival of the fittest has become survival of the wealthiest. Every year there are fewer and fewer means of cheating natural selection that cannot be bought.
This will be our downfall. The end, indeed, is near. I’m guessing no more than 1 or 2 million years.
The answer to human survival, of course is simple, but unthinkable: Get rid of hospitals and medication. Engage in war. Abandon all laws. Revert to anarchy. Every man for himself. Indulge the selfish gene!