Closed Under Reproduction
Two gentle parents have a mean kid. The explanation: the set of nice people is not closed under reproduction.
Transcript
"How could two such gentle people have such a mean kid?" "Alas, the set of nice people is not closed under reproduction."
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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/2024-09-03-closed-under-reproduction/ (CC BY-NC 4.0)