Isn't going to carry on in a truly linear manner with its theoretical construction constructed on more and more sophisticated ideas. Fairly, the Course's development is much more circular with its themes handled symphonically: launched, set aside, reintroduced, and produced. I've been learning A Course in Miracles for 16 years. https://podcasts.apple.com/us/podcast/a-courseinmiracles-acim-podcast/id1456963067