When discussing the chicken-egg paradox, people instinctively focus on the species, when chickens didn't appear out of nowhere.

In fact, it passed through a long, arduous process of species iteration.

And if that was the case for chickens, it applied all the more to humans, where civilization began in Mesopotamia just over five thousand years ago.

However, homo sapiens dates back some 300,000 thousand years ago, and other ape-men possibly going back some two million years.

It was a thought t