You shouldn't argue with people during class time.
Heather is a student in Mr. Stephenson's Biology class.
Heather wants class to be less boring.
Heather gives the class a chance despite initially being bored.
Heather argues with Mr. Stephenson every day about how pointless the class is.
She learns that she is interested in plants and animals and becomes a biology major in college.
The time taken in daily arguing results in the class not learning every unit results in low final exam grades including her failing the course.