How to avoid a civil war, by the man who predicted Trump

Intro:

In February 2010, Peter Turchin, a relatively obscure researcher at the University of Connecticut, wrote a letter to the distinguished journal Nature. He was responding to their “2020 visions” issue – an upbeat dawn-of-the-decade exercise that collected predictions of progress from across science and politics. Turchin assumed the role of Cassandra. “The next decade is likely to be a period of growing instability in the United States and western Europe,” he wrote, “which could undermine the sort of scientific progress you describe.” He pointed to waves of disruption that tend to recur every 50 years…..