The discussion centers on the decision-making process regarding whether to keep or sell textbooks after completing courses. Many participants express a preference for retaining books related to their major, particularly in technical subjects like math and physics, for future reference. Some participants highlight the impracticality of lugging around large textbooks, leading them to sell non-major books or those they found unhelpful. There is a consensus that introductory textbooks often become outdated quickly, diminishing their resale value. Participants also mention the convenience of online resources for lower-level courses, which influences their decision to sell. While some keep books for sentimental reasons or potential future use, others prioritize space and practicality, opting to sell or donate books they no longer need. The discussion reflects a balance between personal preference, financial considerations, and the evolving nature of educational resources.