The discussion centers on the differences in complexity and abstraction between graduate-level and upper-division undergraduate courses compared to introductory and upper-division undergraduate courses. Participants note that the transition from Halliday to Griffiths may not be as significant as from Griffiths to Jackson, with the latter being considered one of the hardest graduate textbooks. It is suggested that the jump in difficulty varies depending on the subject, with theoretical sciences presenting greater abstraction than applied sciences. The conversation also highlights the importance of mathematical rigor in graduate courses, which often emphasizes connections to advanced topics like topology and group theory. Overall, the consensus is that while there are notable differences in educational levels, the experience can vary significantly based on individual backgrounds and the specific subjects studied.