Yes. it was a typo. I do have a good understanding of grammar. I just need to get into the habit of proof-reading.
I do use spell check (I usually put things on my own blog and then paste it here), but the word was spelled correctly, so - until they invent an advanced spell-check that can find errors like that, we’re going to make them.
I’m just a pajama blogger. I’m not one of those intellects who write for, say, The New York Times. :)
I’m prevailing on terpfen to tear up your citation - lol.