but in my defense they could have looked it up (and, like, why didn't they)

"But that's the COMPLETELY wrong period, it's AT LEAST two decades off! That hem? Those shoes? How could they be so sloppy knowing that nobody would be able to achieve suspension of disbelief unless—

"— Oh. Unless they... didn't have a firm grasp of historical clothing in the —th century by decade... which... is probably almost everybody. Right."

—Me, at least once per week, on historical fanart or fanfiction