When the student has more resources to give, then upping the difficulty will draw the best out of that student. If a student has reached the end of his resourc

When the student has more resources to give, then upping the difficulty will draw the best out of that student. If a student has reached the end of his resources, upping the difficulty just adds stress and diminishes the chance for success. If I am in the army, have a wife and a kid and a job, and one of these demands causes me to miss an occasional class, I don't understand how the professor not helping me make up the work will contribute to my eventual success.