Fool + Fool = Wise
Two fools give wildly wrong dates for Columbus, 992 and 1992. Average them, and you get the wise answer: 1492.
Transcript
Fool 1: "Columbus reached the Americas in the year 992." Fool 2: "No, it was 1992." (Fool + Fool)/2 = Wise: "It was 1492."
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Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2022-04-05-fool-fool-wise/ (CC BY-NC 4.0)