Rome Didn't Fall When You Think It Did. Here's Why That Still Matters Today
time.com
time.com
Some periods transitions may be construed as "phase transitions" by scholars advancing interdisciplinary and "complex systems" types of analytical frame. Still, we shouldn't conflate such explanations with very well defined constructs from physics which rely on highly complicated mathematical models. We don't have nearly enough data to build such models for human behavior or social systems. It is just a metaphor.
Between the height of Rome's Imperial power in the second century to the dawn of Medieval Europe in the fifth you'd need thousands of pages to reasonably cover all the aspects of what changed and how. Simply put, there is a whole lot of irreducible complexity in History.
I was going to ask how the Eastern Roman Empire could still wage war with the greatly diminished support of what was likely a war-wary public. But I see that the decimation of the public took place over a few generations.
It raises the hair on the back of neck, when I think of what world our children will inherit and accept as normal.
Ship of thessius and all. The empire slowly changed in many ways but people considered it rome until the ottomans.
When did the british empire end? Or does the commonwealth count? Isn't the UK alone that same empire still, but evolved?