2000 decades ago, we didn’t have Sigmund Freud. We didn’t have all these teachings with regards to the unconscious guilt, protection mechanisms, the ego, etc. A Course in Miracles utilizes the teachings of psychology, the teachings and terminology of education, and In addition it makes use of Christian terminology. https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw