Errorist returns

In the comments on "Final prepositions again", AntC alerts us to Elle Cordova's latest, part III in the Grammarian Saga: "Grammarian vs Errorist showdown at the secret L'error".

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Part I was: "Grammarian vs Errorist – a supervillain showdown"

And Part II: "The Errorist strikes again!"

For some background on the negatively-evaluated version of the term grammarian, see here.