this post was submitted on 06 Dec 2025
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Y'all need to relax about a punctuation mark that Markdown does when you hit dash twice.
LLMs didn't invent the em dash. It appears in the chatbot because it appeared in normal text.
I agree with you, but also, in casual text (at least in my experience), hyphens are used much more commonly in its place. I don't even know how to type an em dash on a physical keyboard, and I've gotten too used to it to even bother on a touch-keyboard. While it's not absolute proof of generated text, it is a red flag, imo.
I've been a fan of em-dashes for a long time, mainly to try and make sentences more coherent without overusing commas, semicolons, and whatever the "..." is called. It's just another piece of the grammatical jigsaw that allows written language to kinda have a voice. But I also don't use an em-dash like 5 times in a paragraph
I just gotta long-press the dash symbol on my phone to use it — like so. Now on a physical keyboard, I gotta really want to use it cause I can never remember the key combination. But I refuse to let AI ruin a perfectly good piece of punctuation for me
You do you. I do think it's relatively rare (or at least not very widely noticed) to most people, so it's going to be something of a struggle for the foreseeable future. Best of luck.
Also, "..." is an ellipsis, fyi.
Dang, I was thinking "ellipsis" but then was unsure of myself and too lazy to search, so thank you! Honestly, idk anyone IRL who uses em-dahes casually, I just like using 'em (eyyy, a little em joke)
Overuse commas ? You think they are going to run out. If you are overusing commas try some new sentences.
I'm traumatized by elementary school teachers telling me my sentences were too "choppy". But verbose quickly becomes run-on... I still have to heal
I had never seen it before the LLM surge. Although that might be a case of Baader Meinhof
Again -- two dashes will do it. Click the document icon below this comment.
Fwiw, I believe that's an en dash. Slightly smaller than an em dash (—), but bigger than a hyphen (-).
Again, I had never seen it before, regardless of the fact that it's easy to type
The fact you haven’t seen it and that it’s so common in LLM output just means there’s a huge amount of the internet you don’t look at. That could be a good or bad thing—depending on your perspective.
And in fairness, common things can still be a tell of some kind. The first time I saw a normal webpage rendered in Computer Modern was friggin' surreal.
Seriously, I've been accused of being AI just because I use em-dashes even though that's never happened before a year ago. It's really annoying.