I noticed that when speaking on a subject I tend to explain it in simple terms, but when writing, I tend to get bogged down in details, pedantry and technical language.

I started publishing my writing recently and I too often fall back into "debugging my mental model" mode, which while extremely valuable for me, doesn't make for very good reading.

I guess the optimal sequence would be to spend a few sessions writing privately on a subject, to build a solid mental model, then record a few talks to learn to communicate it well.

-- Similarly, journaling on paper and with voice memos seems to give me a different perspective on the same problem.

I do this too, and i find this a great use for my LLMs. I write the full detail as a part of integrating. Claude or Copilot helps me craft the communication versions.