check in

The history of the categories-notes file is probably going to be hideous, with
all this copy-pasting back and forth as I rework the material—but we trust that
the historians are prepared to live with this; our primary concern in these
dying weeks of my sabbatical is cutting through to a final draft to serve as an
introduction to The Scintillating But Ultimately Untrue Thought for Slate Star
Codex readers.