Oddbean new post about login | logout I don't think correcting typos and technical errors takes away from authenticity.
Of course not, but when you open the edit door you can't filter the kind of edit.
You can if there's a time limit and a one-time edit restriction. If users had a 90sec window after posting a note to make corrections, I think the focus of those edits would inherently be on technical errors (punctuation, spelling errors, missing words), and not on the substantive content of the note.