Its called stupidity
When I was in Fifth grade, back in 1956, I got in a heated argument with my teacher over Blackbeard’s death. She insisted he was buried up to his neck at the low tide mark and drowned by the incoming tide. How’d she know? Saw it in a movie! [And Blackbeard looked just like Robert Newton, and Lt. Maynard bore a striking resemblance to Keith Andes].