 Students in every calculus class are asked if a ladder is slipping down the wall at a certain rate, how fast is the bottom? Who cares? Textbooks. I think they've missed their era. Like, I think it's just too late to get people to, well, at least around here to buy into buying a textbook. So, in that sense, it's freed up what we do. We're not teaching the same course that I took when I was a student, which we would be, I think, if we really adhered to traditional textbooks. A textbook is really a set of course notes that I wrote that we use instead of a formal textbook. I think as students we, sometimes it's very difficult to pay for such expensive textbooks, and I know I just paid like $200 to buy a textbook. And that money could go towards other resources. I never actually thought of it as, like, here we're doing open resource stuff. I just thought of it as, like, these students are paying $200 for a textbook, and the textbooks don't even cover the stuff that I really am trying to, you know, push in the course, like, emphasize, which is the applications. In Math 102, we used a lot of videos, pretty class videos, and the course notes on the websites, and there's some crazies and old school homework. It really makes the course material more accessible for us. We've got a variety of kinds of resources. Some are publicly available. Dealing with publishers can be a little bit problematic, because with my first book, the publisher essentially did nothing other than increase the price every year, which was disconcerting. So this way I feel that I can reach the students more easily, and also change it, change it on the go. In classes where you take notes in class with a prof, but then you go to a textbook that is recommended by the professor to use for that class, and it's very different. It creates this conflict in your learning. I would say it definitely makes that conflict easier if a prof has written a textbook. I can actually talk about things that come up in my research and have them in the course notes when we have this home written set of course notes. I take teaching very seriously, and I want to give the students both a good appreciation of math, and the idea that math really has a role to play, not just in their learning and in science, but also in their daily life. I think for the math course, I feel it's more efficient in this way. You have all the materials in one website, it saves you time and money, so I would really love to have more courses like that.