this post was submitted on 24 Apr 2026
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[–] halferect@lemmy.world 3 points 1 month ago (4 children)

Fun fact Americans do both

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[–] prodaccess@lemmy.world 3 points 1 month ago

I got used to Celsius while living abroad in Europe and Japan and prefer it to Fahrenheit. The extra granularity of the latter scale doesn't really add much more utility.

However, while 32 F and 212 F are pretty arbitrary, so is calibrating to the freezing and boiling temperatures of water. I'd rather have a scale that's calibrated to humans rather than H2O.

[–] trackball_fetish@lemmy.wtf 2 points 1 month ago

Burgerperson here, metric should be standard

[–] chiliedogg@lemmy.world 2 points 1 month ago (30 children)

What I'll defend, however, is fractional measurements when precision matters.

With decimal measurements, precision can't be nearly as granular. If your measurement is precise to one 1/8 of a unit, how do you represent that in decimal? 0.625 implies your measurement is precise to the nearest thousandth, but rounding it to 1 also isn't precise. 5/8, however, tells you the measurement AND the precision.

With fractional measurements, you can specify precision by changing the denominator to any number, whereas decimal is essentially fractional measurements, but with fixed denominator at powers of 10. For instance, a measurements of a half-unit with levels of precision between 0.1 and 0.10, fractional can be 6/12, 7/14, 8/16, 9/18, 10/20, 24/48, etc. Decimal can't specify that precision without essentially writing a sentance.

What's simpler to record? "24/48" or "0.5 +- 0.208333...."

[–] bufalo1973@piefed.social 3 points 1 month ago* (last edited 1 month ago)

If you are drawing maps, a precision of meters is enough. If you are building a house, cm it is. If you are making furniture, mm. If you are working with metal, um (micrometer)

[–] rbos@lemmy.ca 2 points 1 month ago* (last edited 1 month ago) (3 children)

0.625 implies your measurement is precise to the nearest thousandth

It does. If it were precise to less than that, you'd say 0.62 or 0.6 to indicate hundredths or tenths. Why would you say 0.625 if you're not precise to thousandths? You'd say 0.62500 if you wanted to indicate precision to hundred-thousandths.

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