At what age did we learn how asterisks are used, and how did so many people manage to miss that day in school? Personally, I love any kind of citation like that teasing a different train of thought or bank of knowledge supporting the sentence’s main proposition. To me, an asterisk that is placed without being completed is a spooky door to nowhere.
Sometimes I remember things about the world (because I am middle-aged, let’s say) that make me feel truly crazy to say aloud. “Remember word processing software with the undo button, before they added the redo button?” I do, because it was while I was in college. You could very easily undo a page’s worth of work. Sitting on the curb outside the Javits Center after the first morning of the bar exam, I talked to another test taker who said she had erased a whole page of essays. I guess the people who created the undo button were aware of mistakes, they just didn’t contemplate that sometimes you make more than one of them in a row.