This question focuses on the discussion of Chevalier and Goolsbee (2009) in Section 4.2.2. Make sure you re-read this discussion before answering the following questions. Chevalier and Goolsbee (2009) suggests that the market for textbooks in the United States is rational and students are forward looking. If expectations were not rational and forward looking, how would you expect the example to differ? Would publishers be able to raise revenue by speeding up revision cycles?