Not the poster, but for me it comes down to a mix of clarity and permanence. I teach both verbally (interactive question/answer) and I've also written text boo

Not the poster, but for me it comes down to a mix of clarity and permanence. I teach both verbally (interactive question/answer) and I've also written text books. Verbally by language is "loose". I'll say class when I mean object, unicode when I mean utf-8 and so on. Sentences are not all well formed, and sometimes change mid-thought. It's very "real time" Writing is a lot more deliberate. I have to be sure of each fact I state. I often re-test things I'm only 95% sure about. I edit, restructure, remove, add, until I'm happy. Of course all communication falls on a spectrum. Think phone call at one end, text book on the other. When I do a verbal lecture I'm usually careful with my speech, and when I post on hacker-news less rigorous. Language covers all of it. Text skews to the more deliberate side. Cunningly the language models are trained using (mostly) text, not speech. That will have an impact on them.