Assume you used a bad source, or did something else wrong. Don't edit the article again until the due date, and hope your professor sees it before the other editor. (click to expand or collapse)
INCORRECT! Wikipedia is "the free encyclopedia anyone can edit", and that includes you. If you aren't comfortable using the Talk page, or user page of the editor, there are other options. You can always ask your instructor, or the Content Expert listed on your course page. That's why they're there!