These are internal notes and presentations used for personal reference and storage but are made publicly available and free for use by anyone.
Compared to the blog these notes are typically meant to be less transient and less opinionated. All notes are continually maintained (unless marked as archived) and will undergo lots of modifications without noting a modification has occured (no versioning system to note changes).
Despite maintainence & my best efforts these notes are not guaranteed to be correct. If there are any glaring mistakes the best way to recommend an amendment is via email (available in the footer).