Oh, I didn't say the textbook was -my- textbook. From the library or from a friend, getting the relevant bits we needed was super common, because the textbooks

Oh, I didn't say the textbook was -my- textbook. From the library or from a friend, getting the relevant bits we needed was super common, because the textbooks were infrequently referenced and super expensive for many classes. But, to the OP's point, I totally agree digital changes the equation. But it should also change the law. Theoretically having an img tag that references someone else's site could be thought of as illegal, after all. I'm reproducing the work without authorization, and even making money from it (ad impressions on my site rather than the hosting site), -while costing the original site money- (since they still pay the hosting and bandwidth costs). Digital changed -everything-, because the cost to copy went to 0. The laws have not kept up.