2000 several years back, we didn’t have Sigmund Freud. We didn’t have all of these teachings with regards to the unconscious guilt, protection mechanisms, the ego, etc. A Course in Miracles makes use of the teachings of psychology, the teachings and terminology of training, and it also uses Christian terminology. https://www.youtube.com/channel/UCXpL4OXSmktqlP6_S5p5jIQ