Even in the olden days before everyone was carrying a powerful computer with them in their pocket everywhere they went "Math errors" as the result of *conceptual* errors were far more common and damaging than actual arithmetic flubs
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The more general way to phrase what I'm talking about is "Weigh them all together" If the scale has a fudge factor then adding up separate results from it will make it worse But the "2+2=5" idea is absolutely an accurate way of describing it
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(This came up on Square One TV when I was a kid Months typically have four seven-day weeks, plus a few days extra It is very tempting to round down and just say "one month = four weeks" But if you do that for the whole year, you've cheated someone out of 4 weeks out of 52)
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If an architect and a construction worker have different understandings of 2 and 4 that leads inevitably to bad things.
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Yes, which is why it's important to actually discuss these things and think about them rather than blithely assuming them!
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*Every* person who touches programming, bar none, who is remotely paying attention to the quality of their work eventually encounters the fact that 0.1+0.1 does not equal 0.2 because of rounding errors.
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They're also are told to never compare two fractional values for being "equal," because errors in the 15th place might mean practically indistinguishable values are not identical. And TBH, everyone should learn this is true of any physically measured quantity that's not intergral
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You keep saying there's plenty of examples, but you haven't given one.
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