Serious question, why do historians have to follow the twenty year rule?

by dajackman7791

I regularly shock my everyday friends with basic facts on general history. I wonder if it was a lack of an awarness of historical understandings of modern events.

Are historians able to in a serious and research based way have a disucussion on current events? Should a r/Askhistoriansoncurrent events be attempted?

XenophonTheAthenian

Historians don't have a 20-year rule. No university department is going to kick you out or deny you tenure for discussing current events--indeed, in some Classics departments it's encouraged to connect things to the modern world, since Classics departments must constantly fight the uphill battle of proving to university administrators who only see pricetags and dollar signs that even though it doesn't make the university a ton of money Classics is far from obsolete. The 20-year rule is a rule the sub has developed for the purposes of helping discussions here. The date is not quite, but almost arbitrary

SlaversBae

What is the twenty year rule?