Ribosomes
A student uses the 'we have calculators now' argument against learning about protein synthesis, since ribosomes do it for us.
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Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2018-03-16-ribosomes/ (CC BY-NC 4.0)Transcript
Teacher (at a board): "Then, a tRNA molecule with the corresponding amino acid comes in..."
Student: "Hmmph. Maybe you needed to learn this when you were a kid, but these days we have ribosomes that do all this for us."
[Caption] "Hobby: Misapplying math education arguments."