Context: This is for introductory linear algebra course, near the beginning.
As a sort of "exit survey" after one of my lectures, I would like to ask my students to try and define what "unique" is from a mathematical perspective. I would then talk about that next time. However, I am not sure
- whether that's a good idea; or
- how to phrase the question so that I don't get answers like "it means you're really special".