Some Proofs Are Worth the Trouble
A mathematician staring at a messy chalkboard can't tell if the work is genius or gibberish; the only way to know if a proof is worth it is to try.
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Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2016-07-04-some-proofs-are-worth-the-trouble/ (CC BY-NC 4.0)Transcript
"Some proofs are worth the trouble. Some aren't. There's no way to tell which is which, except to try." [Mathematician at a messy board] "Well, this is either genius or gibberish. Better keep at it."