I was talking to somebody who worked HR at a multi-disciplinary shop, and she said you could always identify the emails coming from programmers

It was a complaint, definitely not a compliment. She said programmers listed things out in bullet points and bluntly to-the-point. She complained they were dry, intimidating, and she hated dealing with them

I still write concisely and with bullet points, when writing to other programmers. But I now expand things when talking to everybody else. And I've found I get better responses

If the HR person wanted to recruit programmers, I feel like that's a feature.

I'm kinda glad, because I hate emails coming from hr.

It shouldn't be terribly surprising that humans incorporate signals beyond pure denotational content of message? Text is a pretty low-bandwidth channel, so we infer as much meaning as possible from the bits of information we receive. All the stylistic choices encode additional information about the sender; part of one's job as an effective communicator is evaluating the effect of all those choices and adapting the entire message (not just its content) to convey the intended impression (not just the meaning).

Incidentally, this is why AI-writing isn't necessarily better communication. The robot can help translate intentions into prose, but it can't decide what one should actually intend to say.

This is it. This is why I think AI is a better writer than I am.

This reminds me of Craigslist. When I get a response that’s written in a terse and grammatically incorrect style, I ignore it. Experience tells me these transactions don’t tend to go well.