According to the CEO of Medium, the reason is because their founder, Ev Williams, was a fan of typography and asked that their software automatically convert two hyphens (--) into a single em-dash. Then since Medium was used as a source for high-quality writing, he believes AI picked up a preference for em-dashes based on this writing.
[Founding CTO of Medium here]
It wasn’t just Ev - I can confirm that many of us were typography nuts ;)
Marcin for example - did some really crazy stuff.
https://medium.design/crafting-link-underlines-on-medium-7c0...
> since Medium was used as a source for high-quality writing
That explains a lot…
Isn’t the two hyphens just a traditional way to emulate m-dash in ascii? I believe Word does the same.
If medium was a source why doesnt AI models stop half way through their output and ask for subscription and/or payment?