The Fourth Turning: What the Cycles of History Tell Us About America's Next Rendezvous with Destiny

by William Strauss

War cycle theorists have drawn similar conclusions. Thompson calculates that “the average interwar interval period” is about eighty years. From this, he concludes: “If we look 80 years beyond the end of the last global war in 1945, the year 2025 appears to represent a reasonable projection of the history evidence.”