this post was submitted on 24 Apr 2026
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[–] rbos@lemmy.ca 2 points 4 hours ago* (last edited 4 hours ago) (2 children)

"The fraction allows you to communicate length and tolerance in a single number"

I don't see how that isn't true of decimals, too. 0.1 indicates a precision of 1 digit, 0.12 indicates a precision of 2, 0.120 indicates a precision of three.

[–] ryathal@sh.itjust.works 1 points 1 hour ago

Exactly like my example above. 1/8 implies +or- 1/16. While .125 implies +or- .0005, but it was only measured to +or- .0625, which is 2 orders of magnitude different.

[–] chiliedogg@lemmy.world 1 points 4 hours ago (1 children)

How do you account for doubling precision? Decimal only records 10-fold steps.

[–] rbos@lemmy.ca 1 points 35 minutes ago* (last edited 32 minutes ago)

In any context where it's important, you'd note it with +/-. Not really a problem.

I guess there's nothing wrong with saying 1/8th metre, 1/8th centimetre, 15/16th metre either. Just as some people might use 0.356 inches.