It's only because Mastodon doesn't allow me to post more than 500 characters.
> isolated environment though
I didn't mean the US, I meant specific sectors of economy such as plumbing or car mechanics...
> Tell a carpenter
...or carpentry.
I don't do wood work, but I do 3D cases or PCB occasionally and can't imagine doing that in fractional inches.
> 3/16” and 11/16”
Then maybe it's optimised for human memory operations.