Highly unusual, yes, but you need to have the full sentence available for parsing before you can make that decision. I would say that having a sentence change

Highly unusual, yes, but you need to have the full sentence available for parsing before you can make that decision. I would say that having a sentence change itself after having written part would be horrible for the user, and so autocorrect's knowledge is limited to what has been written before the questionable word, with no knowledge of what comes after.