this post was submitted on 30 Jun 2023
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Standardization
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How is memorizing 100 any easier than memorizing 212? It's the same brain space. When you're born into the system, it just makes sense. Same with 32 for freezing. Remembering any two arbitrary numbers is really, really easy.
Personally, I'd rather have been raised on metric, but I'm telling you... the Fahrenheit system is no harder than Celsius.
Now fractional inches... Ugh. I do woodworking and I'd much, much rather work in mm, but "every" tool in the US and nearly every enthusiast-level technical drawing is in inches. That and all of my decades of experience is in inches, so I can easily reason about the numbers, and estimate sizes. At least in machining we use decimal inches and not fractions.
Round numbers are easier to remember.
Not only round numbers, but 0 and 100!
0 is obviously a very distinct number.
We use 100 for percentages, money, and all sorts of things.
As someone who wasn't raised in the imperial system, I always have to try to remember if it's 32 or 34. I doubt anyone who hears about the metric system is wondering whether it's 0 or something else like 2 or 10 or whatever.