This user considers singular they standard English usage.
’s
Thi's user know's that not every word that end's with s need's an apostrophe and will remove misused apostrophe's from Wikipedia with extreme prejudice.
…in.
Ending a sentence with a preposition is something that this user is okay with.
I am a linguist working in tech. I have a PhD in linguistics from MIT and several years experience teaching linguistics at the university level at Yale University and New York University.
My research interests are in syntax and semantics, including theoretical and experimental approaches to language science broadly defined.