2000 decades back, we didn’t have Sigmund Freud. We didn’t have all these teachings with regard to the unconscious guilt, protection mechanisms, the Moi, etc. A Course in Miracles works by using the teachings of psychology, the teachings and terminology of instruction, and it also makes use of Christian terminology. https://www.youtube.com/channel/UCXpL4OXSmktqlP6_S5p5jIQ