For example by starting with a definition and then expanding/explaining it.
Blogspam written by someone who sounds like a teenager with ADHD should be posted in the "iamverysmart" subreddit, not on HN.
But that is exactly the thing, most people aren't able to convey their thoughts in a precise manner, it requires a lot of words. Programmers knows this as well, it is hard to describe things precisely, human written language is very imprecise. The difference is that mathematicians has to explain things precisely to other humans, while programmers just has to explain things precisely to a computer, never to other humans, it is fine if the other humans just gets a cursory understanding.
So when it comes to explaining things precisely to other humans mathematicians are the experts, not programmers, programmers still thinks that imprecise explanations are good enough for human consumption.
Is there a point to your question?