What changed, and when
This page will carry one dated entry for every published unit and every substantive revision to one. It is the evidence that a course published as it is written is being written.
Entries
There are no entries yet. The first one is written the day the chapter being written now publishes. Nothing is back-filled: an entry that was not recorded when it happened would be a guess, and a changelog of guesses is worth less than an empty one.
Until then, two things are dated and visible: every published unit carries its last-updated date at the top of the page, and the course status line carries the date of the most recent change.
Today it reads: 3 of 52 units published · Chapter 2 writing now · Updated 10 Sep 2026