A branch of mathematics that is only useful for people trying to enter into certain fields of work, for the rest, it's completely useless. Sadly, universities in the United States require people in fields that have nothing to do with math to take this class in order to graduate, thus lowering there gpa, and making them seem less qualified as a result of a poor mark in a class that has nothing to do with their future career.
Dick: Ahhhh, so stressed!!!
Jane: whats wrong?
Dick: Ah nothing, just gotta a lot of calculus homework
Jane: Why are you taking calculus, aren't you trying to become a physical therapist?
Dick: Ya I am, but I have to take calculus in order to graduate.
Jane: Wow, that makes no sense