Now that we're at the end of the semester, I'd like you to think about what you have learned in this course. Imagine that you are writing to a friend next September who is about to begin a microeconomics course and asks: Which concept that we will study will be most useful in my life as a consumer? Why? Which concept that we will study could be most useful in my life as a voter on economic issues? Why? Which issue in microeconomics is likely to unresolved after the course? That is: what will I still not understand well because microeconomics doesn't have a very good answer? Why?