I remember reading an article or blog post about a mental calculator who was being tested with people asking them to calculate integer roots of large numbers. The testers snuck in a number that had an irrational root, and the mental calculator said something like "that number doesn't feel right" and got annoyed.
Or something like that. This is a very vague memory and I could easily have gotten the details wrong.
Market resolves based on whether anyone provides me with a link to the story before close.
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"Irrational roots, however are apparently more of a problem. She has reportedly done them, rounding off to two decimal places. But when the following number was presented at her Stanford demonstration, she took one look at it and dismissed it as a "wrong number." It was 9√743,895,212. The answer (figured by computer) is an irrational number: 9.676616492+"
(I got the same name from ChatGPT without priming it, with a similar hallucination about 395 claiming it was an anecdote told in her book. I skimmed through her book but didn't find anything, then followed the link about 395 from the wiki and found this. Sounds pretty much like what Isaac remembers.)
@Mqrius I think that's what I was remembering, thank you.
Sounds like it wasn't actual frustration/intuition, but just showmanship. Ah well.