I think we need a better mutual definition of useful. IMO an equation is "useful... | Hacker News

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aqme28 on Feb 8, 2022 | parent | context | favorite | on: PDEs you should know

I think we need a better mutual definition of useful. IMO an equation is "useful" if someone out there is doing practical things with it. You are taking a sort of definition where anyone can do math with it.

squeaky-clean on Feb 9, 2022 [–]

Well the page title is "PDEs You Should Know", not "PDEs Someone Should Know"

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