Try not to insult the teacher

It's always interesting when a student challenges a teacher. There are clearly instances when a teacher makes a mistake; consequently, I will be the first to admit when I do so, but there are just some times when a challenge is not worth the trouble. Seriously, do you really want to irritate the teacher? Be realistic. If you have an A, if you are setting the curve for the rest of the class, is it really necessary to fight for the last point, especially when the you are wrong or refuse to see and understand the teacher's POV. There are just some fights that are not worth the trouble. Amen.