I am teaching an international economics class this semester. A student did not show up regularly in my lectures and received 50 out of 100 in the midterm. Then he sent me an email after the midterm, asking if it is still likely to receive AT LEAST a B for this class. I told him that if he showed me his efforts and did well in the final and other assignments for the rest of the semester, a B is still something possible. Then I only saw him once after the midterm. I thought that he had droped from the class. But he contacted me again recently and said he was still enrolled in the class. The reason for his absence from my lectures is because he was too busy. In addition, he is still expecting to receive a B or even better from my class because otherwise, he is going to lose funding. I really don’t understand how someone can come up with such an unrealistic expectation. It has shaken my belief on rational expectations so much that I decided to work on a paper in the field of behavior finance.