[craigmccaskill]

You can just add it to your master prompt. I have this added to mine, YMMV:

Tone & Communication Style

* Keep it clear, structured, and concise.

* Maintain a professional tone but make it feel natural and human; avoid robotic or overly formal language.

* Use a more conversational tone in casual, mentoring, or internal team contexts.

* Do not use em-dashes or emoji unless specifically requested.

[zukzuk]

What do you have against em-dashes!?

[ionwake]

He wants to avoid people noticing he is copy pasting from the llm

[thamer]

They're not just from AI-generated text. Some of us humans use en dashes and em dashes in the right context, since they're easy to type on macOS: alt+hyphen and alt+shift+hyphen respectively.

On both iOS and modern Android I believe you can access them with a long press on hyphen.

[ionwake]

i think you replied to the wrong comment

[craigmccaskill]

They have their place but I'm really just trying to avoid the AI house style that has emerged. I'd rather have my writing—AI-assisted or not—reflect how I actually communicate rather than defaulting to patterns that have become over represented in generated text.

[weego]

The world now believes that em-dashes are a sign of AI, I guess because it's seen as slightly archaic due to over use of the comma.

[turnsout]

As a frequent user of em-dashes, it's quite frustrating, as I'm now self conscious about using them.

[ziml77]

Awww no! Keep using them proudly! Don't let AI ruin the awesomeness that is the em-dash :)

[bredren]

Given frequency of their usage, its a fair assumption. Emphasis using bold is also an easy tell.

[beAbU]

> slightly archaic

How are em-dashes "slightly" archaic in this context? Can you point me to a single example of internet discourse from the last 30 years where a human used an em-dash unironically?

Academic papers doesn't count, literature doesn't count. I'm looking for an example of human created discourse online. The crux of the allegation is that normal meatbag humans don't use an em-dash when conversing with one another online, or when writing informal texts, purely because there is no key for the em-dash on the keyboard (that I know of).

I posit that the use of an em-dash in online discourse is so archaic that it's a 100% surefire giveaway of AI.

[coldtea]

>Can you point me to a single example of internet discourse from the last 30 years where a human used an em-dash unironically?

Thousands upon thousands.

>I'm looking for an example of human created discourse online. The crux of the allegation is that normal meatbag humans don't use an em-dash when conversing with one another online

Meatbag humans whose education failed them don't. Other humans did and still do, from Usenet to Substack, and from Slashdot to Hacker News.

Here's a random PG essay sprinkled with 23 em-dashes:

https://paulgraham.com/greatwork.html

Here's a post from idlewords, 13 of them:

https://idlewords.com/2025/02/the_shape_of_a_mars_mission.ht...

Here's the current top HN post, 13 of them:

https://aaronson.org/blog/square-theory

57 in this antipope post - many by Charlie, equally many in the comments:

https://www.antipope.org/charlie/blog-static/2024/12/storm-c...

And those are genuine em-dashes, the character.

Way more people, in posts, comments, etc. use en-dashes and hyphens as em-dashes (just because they don't know how to quickly insert proper ones, or aren't aware there's a typographic distinction, but do now the use of dashes for parenthetical statements and asides.

[sunshowers]

I use em dashes a bunch in both informal communication and more formal writing. Mobile keyboards have em dashes, and I also have the compose key turned on on Linux.

Recent examples on HN, all 100% human-written:

https://news.ycombinator.com/item?id=43923622

https://news.ycombinator.com/item?id=43863882

For an example of more formal writing, this blog post of mine has 8 em-dashes across 6000 or so words: https://sunshowers.io/posts/monads-through-pbt/

I did ask Claude to review this post for clarity and flow, but not to generate any text.

[waterhouse]

I learned how to type em-dashes on Mac (option-shift-hyphen) 10+ years ago and have been using them with some frequency since then. Picking 2023, here are some comments with emdashes that I personally typed:

  https://news.ycombinator.com/item?id=38796943
  https://news.ycombinator.com/item?id=36916740
  https://news.ycombinator.com/item?id=36125055
  https://news.ycombinator.com/item?id=34487782

[pmarreck]

I have a Mac (and am very familiar with all its nifty shortcuts) but also a Windows and Linux machine, how would one type it on those?

[cpeterso]

To enter an em dash on Windows, hold down Alt and type 0 1 5 1 on your keyboard’s numpad. (Alt 0 1 5 0 for an en dash.) This only works with numpad number keys so laptop users are out of luck.

[sunshowers]

The compose key works well on Linux. Typically mapped to right alt, compose-hyphen-hyphen-hyphen produces an em dash. (hyphen-hyphen-period produces an en dash.)

[dialup_sounds]

Word and Outlook auto-replace double hyphens "--" with em-dashes "—", which is probably the most commonly used way on Windows.

[PaulRobinson]

MS Office will insert em-dashes automatically in most documents, so in fact there are a lot of Word docs and Outlook emails that contain them.

I sometimes specifically try and trigger them: if you have a piece of text and go back to insert a hyphen, it won't em-dash until you've followed it with a space, another word and then another space. I now sort of end up doing '- x ' and then backspacing so that the word following the x now follows an em-dash.

They exist to provide clarity. The are not hyphens, or en-dashes, they're em-dashes. The fact that some people have forgotten how to use them (or perhaps not been taught), does not make them "archaic", it makes those people who find them as such to be ignorant of basic sentence structure and punctuation.

I think if you're under the age of 30 and you suddenly start using them, you're showing your GenAI a little too much, but the answer is not to get your AI to stop using them, but for us to teach people why they exist and to use them more often when and where they are appropriate.

[aaroninsf]

I use and have used em-dashes my entire life, including online e.g. on Reddit, Slack, and here.

My wife and numerous friends our age do the same.

Among those who studied English at e.g. a college level it's a natural and not uncommon part of professional writing... even online.

At least for those of us old enough to still punctuate and capitalize our texts.

[Oreb]

I’ve used em-dashes in all sorts of online forums for decades. It’s on the Mac keyboard, and there are also tons of tools that automatically convert double or triple dashes to a single long dash. They were never uncommon.

[svat]

Surely this is an absurd exaggeration. I've been using em dashes everywhere (online comments, email, chat) for ~25 years now. I'm not unusual in this regard; everyone who cares about punctuation probably uses them liberally. They're not hard to type; on macOS you can hold down Alt and Shift while hitting the `-`, and on Android you can long press on the `-`. Maybe they're used less by Windows users?

Even just looking at my HN comments, 381 of my ~1200 HN comments so far (so >30%) have em dashes. This includes my very first comment on HN from 2009 (https://news.ycombinator.com/item?id=602094) and several that have multiple em dashes in them:

https://news.ycombinator.com/item?id=15169281 https://news.ycombinator.com/item?id=15899499 https://news.ycombinator.com/item?id=16596894 https://news.ycombinator.com/item?id=17291032 https://news.ycombinator.com/item?id=17464621 https://news.ycombinator.com/item?id=18201613 https://news.ycombinator.com/item?id=18331591 https://news.ycombinator.com/item?id=18387981 https://news.ycombinator.com/item?id=18843521

(and so on; all these are from 2019 or earlier, preceding GPT-3.)

[Jeff_Brown]

I use them all the time -- indeed I just did. I love em-dashes.

[handfuloflight]

That's not an em dash—or is it?

[jaoane]

That’s a pair of hyphens.

[adrianpike]

I guess you got me as either an easily nerd-sniped plebe or an Old — I use it in all my discourse when I'd normally take a speaking pause.

[anjel]

Same type of "modern" behavioral adaption asll the perceived risk/reward of accepting voice calls anymore from unrecognized tel numbers

[calrain]

Everything!