We don't have an infinite pool of human states. We have one history. We don't have examples of modern and unconnected. We do have examples of collapses from to

We don't have an infinite pool of human states. We have one history. We don't have examples of modern and unconnected. We do have examples of collapses from too much interconnection and trade. A good example of systemic collapse of this sort, from another point in human history, is Late Bronze Age collapse circe 1150BC. There were complex, structured societies which were pretty efficient for the time, due to trade and specialization. All of the major cultures were wiped out, all at about the same time, when those structures broke down.