Two brilliant authors wrote a book called the Fourth Turning that forecast our societal breakdown in 1997. Every 80 years or so (about a normal human) it happens. Depression & WWII, Civil War, Revolutionary War. All about 80 years apart. This was traced by the authors back over 500 years.
See this video interview on C-Span in 1997!!
https://bit.ly/374ErYK
Prophetic! A crystal ball that works.
That was very compelling. I may buy the book.