The discussion centers on the effectiveness of self-studying versus attending classes, particularly for subjects like Calculus 3. Participants express that while self-study is feasible, it often lacks the depth and clarity provided by a good professor. Many agree that lectures can enhance understanding, especially when a professor offers unique insights beyond the textbook. However, some find that self-study allows for a personalized pace and may be more suitable for those who struggle with traditional classroom settings. The importance of having a syllabus and supplementary materials, such as problem sets and exams, is emphasized for successful self-study. Additionally, it is noted that self-study requires significant effort and discipline, and students should consider their academic goals, especially if they need course credit or plan to use the knowledge professionally. Ultimately, the choice between self-study and classroom learning depends on individual learning styles and objectives.