Consider me annoyed (but impressed).
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No, it is the aptness of the flowchart.
presumably because on of the steps was "Install Mathematica"
By the way, the prior xkcd, contrasting differentiating with integrating, was sent around at work. It elicited a few reactions (my own take being the author basically nailed it).
https://www.xkcd.com/2117
Fun fact: 52.7% of mathematicians use the term "abscissas" and the other half use "abscissae".