A recent study (1) shows that kinship and fellowship were held in equal regard in the households of medieval times and cultural appropriations were common among closely related individuals then, is in contrast to what is becoming of modern humans. Recent leaders have advocated cultural purity and ethnic cleansing and close to a quarter of the world population now believe in these ideas. Culturally and socially, it is possible that medieval times were better than the present. It is unfortunate.
Ignorance is costly - especially in leaders who are supposed to lead humanity to better places. As technology advances and opens up a chasm between those in the know and others, the rich and the poor and the connected and disconnected, we are fast approaching a social discontinuity. If we had knowledgeable leaders who presided over this unique time in history, we could have surpassed it. Ironically, as humanity reaches a technology and social discontinuity, they are "led," by kids, crooks and religious fanatics. This appears to be systemic as there is some evidence that incompetence rises to the top exactly at the point of hyper advancement in knowledge. Perhaps this is programmed into the human psyche and it acts as a break against achieving a more advanced state of society.
If humans are simulated in a random fashion, historically consistent observations in this vein will be impossible. So, we have to conclude that there is something programmatic in the game we play that acts as a natural brake against progress. The error function is dominant at points of discontinuity. This disallows humans to break out of a level 0 society. They could certainly imagine the next level but it is impossible to attain as they get close enough to it, disaster strikes - in the form of ignorance, ego or incentives that aid localized and tactical optimization.
The game is rigged...