There are a couple I have in mind. Like many techies, I am a huge fan of RSS for content distribution and XMPP for federated communication.
The really niche one I like is S-expressions as a data format and configuration in place of json, yaml, toml, etc.
I am a big fan of Plaintext formats, although I wish markdown had a few more features like tables.


ISO 216 paper sizes work like this: https://www.printed.com/blog/paper-size-guide/
It’s so fucking neat and intuitive! How is it not used more???
Also, A4 simply has a better ratio than letter. Letter is too wide, making A4 better to hold and it fits more lines per page.
Presumably you could just buy that paper size? They’re pretty similar sizes; printers all support both sizes. I’ve never had an issue printing a US Letter sized PDF (which I assume I have done).
Kind of weird that you guys stick to US Letter when switching would be zero effort. I guess to be fair there aren’t really any practical benefits either.
I’ve literally never even seen A paper in America. Probably would have to special order it from another country
Ah fair enough.
I mean I’d love to use it. Of course America is behind the times of civilized nations.
Most preschool kids know what an A4 sheet is. Not sure how it can be used more.