Those pesky historians. How dare they use data and accounts from 1000s of years ago to retrace what really happened? I mean, we have those great models. What do we need reality for when we have those great computer games? China’s 8000 years of recorded history sure has more gems like this. But not only China recorded stuff. The old Romans were pretty nosey administrators and when it came to registering taxes, they were no slackers. They recorded with utter precision what grew where and how much. Historians don’t doubt the Roman Warm time or the MWP. Only nonhistorians with a stake in Climate Alarmism do.
Researchers say that when 500-year-long sun cycles brought warmth, communities flourished, but when the Earth cooled, ancient societies collapsed.