Empirically, there's little to no medical evidence encouraging the metaphysical states made by ACIM. The idea that the physical earth is definitely an illusion created by our combined ego lacks empirical support and goes table to the large human body of scientific understanding gathered through ages of remark and experimentation. While subjective experiences of transcendence and religious awareness are well-documented, they cannot provide target evidence of the non-dualistic fact that ACIM describes. More over, the course's assertion that changing one's ideas can alter truth in a literal sense is reminiscent of the New Thought motion and the more new law of interest, equally of that have been criticized for missing clinical validity. The placebo influence and the energy of positive thinking are well-documented phenomena, but they don't help the fantastic metaphysical claims created by ACIM.

More over, the sources of ACIM raise additional issues about its credibility. Helen Schucman, the psychologist who transcribed the program, described her experience as receiving dictation from an internal voice she determined as Jesus. This technique of channeled a course in miracles  writing isn't unique to ACIM and can be found in some other spiritual and spiritual texts all through history. The subjective character of those experiences causes it to be hard to confirm their authenticity. Authorities disagree that such texts are much more likely items of the subconscious mind as opposed to communications from a heavenly source. Schucman himself had a sophisticated relationship with the product, apparently experiencing significant inner conflict about its content and their origins, which brings still another coating of ambiguity to the course's statements of divine authorship.

Additionally, the language and type of ACIM are often esoteric and abstract, making it burdensome for many viewers to comprehend and use their teachings. The class is written in a very stylized kind of English, with thick, graceful prose that may be challenging to interpret. That complexity may lead to a wide selection of interpretations, a number of which can diverge significantly from the supposed message. The ambiguity of the writing permits subjective readings, which can lead to misconceptions and misapplications of their principles. This not enough clarity may undermine the course's success as a functional guide for spiritual growth and self-improvement.

Additionally, the industrial aspect of ACIM can not be overlooked. Since its book, ACIM has spawned a profitable business of publications, workshops, seminars, and study groups. While financial accomplishment doesn't inherently negate the value of a spiritual teaching, it will increase considerations in regards to the possibility of exploitation. The commercialization of spiritual teachings can sometimes result in the prioritization of revenue around true religious development, with people and companies capitalizing on the course's recognition to advertise services and products and services. That active may deter from the sincerity and integrity of the teachings, spreading doubt on the motives behind their dissemination.