Two licences, on purpose.
This site runs a split licence, and the split is the strategy.
The Meaning Motive Clause (MM-1) is CC0. No rights reserved, none expected. The clause exists to be adopted, and adoption should cost nothing: not a fee, not a form, not even a credit line. If it spreads namelessly, it is working.
Everything else here, the words, the Workshop notes, the Keeping Map and its sibling figures, is CC BY 4.0. Use them, adapt them, translate them, put them in your slides and your papers, and say where they came from. Attribution is not vanity; it is how a travelling figure finds its way home, and how a reader of your version can find the source, the data, and the caveats we insist on keeping attached.
The paper and the dataset carry the licences stated on their Zenodo records.
Suggested figure credit: The Keeping Map · The Meaning Motive · themeaningmotive.org · CC BY 4.0
One boundary the licences do not grant: passing work off as endorsed by The Meaning Motive. Copy the words freely; do not borrow the signature.