And to prevent inbreeding, maybe one of your villager sons will meet a neighbouring village's daughter and they will have a shitload more kids and they will spread out geographically and dilute the gene pool or something. Then they will dig deep into the soil and begin working with harder minerals to make stone buildings and metal weapons and many wars will be won and lost and many men will die probably then different areas in the world will be explored using ships and stuff. Then other stuff would happen, and different languages would form, and shit like science and medicine, and different cultures would influence and conquer one another and the world will be eventually be entirely consumed by the human race.
And at the end of it all, the only thing still standing will be the Bridges.
