. His theory that the first millennium should be reduced to just three centuries, however, may no overcome all objections. In a nutshell, Heinsohn hypothesizes two major distortions in our textbook timeline, one resulting in an extension of roughly three centuries, the other inserting four centuries.

Twin Events and Phantom Centuries in Late Antiquity?

The Larsson-Ossowski dendrochronological challenge

https://www.unz.com/article/twin-events-and-phantom-centuries-in-late-antiquity/