Earlier quoted context omitted.
True, but I don’t understand why this would make letter size confusing to Americans. European office workers are not sitting around marveling at the mathematical elegance of the definition of A series paper. It just doesn’t matter in daily life.
> It just doesn’t matter in daily life. Like a lot of mathematics it does matter in your daily life but you actually just don't think about it because of course this works - unless you're an American and so no it doesn't. The A-series paper sizes mean everything scales very naturally. Poster? Pamphlet? It's just the same ratios again but bigger or smaller. There is a single design where this works, and that's why the…
I'm not trying to be combative; I genuinely don't know.