Do you have a dumb question that you're kind of embarrassed to ask in the main thread? Is there something you're just not sure about?
This is your opportunity to ask questions. No question too simple or too silly.
Culture war topics are accepted, and proposals for a better intro post are appreciated.

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Notes -
Real punctuation:
Hyphen-minus: -
Ersatz em dash: --
Mental illness:
Hyphen: ‐
Minus sign: −
En dash: –
Em dash: —
t. sufficiently mentally ill to use everything but the hyphen
Hot take: If it's not part of ASCII, it's not a real character; Unicode was a mistake.
I'm ok with Unicode to the extent that it is used to contain actual languages. But emoji can fuck right off from my text encoding, especially now that they have been hijacked for political purposes.
I thought I was the only one who felt this way.
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ℝ is perhaps the most real character.
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UTF-16 and its consequences have been a disaster for the human race. But having typographically correct characters and the ability to casually mix languages are very nice.
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−10,000 social-credit points for hurting the feelings of the Chinese people.
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I had to check the page source to see how you did that. So now I can do arithmetic 7−5=2 and number ranges 1914–1918 and — wait for it — felis‐parenthesis :-)
More of these "HTML named character references" can be found here.
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I also use the correct punctuation when writing in LaTeX, though not anywhere else. The mental illness label is accurate, though.
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LaTeX users will probably type three hyphens for an em dash.
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