I wrote the first draft of it when a friend came to me with some questions about
the field in mid-2023. Since then, I’ve reused it with about a dozen folks,
revising it each time to be shorter, more precise, and trying to keep it up to
date. My agreement with anyone I send it to is that they have to tell me where
they think it is unclear, imprecise, or inaccurate - their feedback is the only
way it can improve.