this post was submitted on 19 May 2025
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An error margin of less than 5% (even better, biased in a known direction) is more than good enough for plenty of use cases.
An error margin of more than 25% on the other hand, is seldom acceptable.
Nah, it's fine. Trust me I use pi=4 in every calculation I do that uses pi and I haven't ever run into any issues at all
(I'm not that type of engineer, I never do anything with pi)
It's called safety factor