Empirically, there's little to number medical evidence encouraging the metaphysical statements made by ACIM. The indisputable fact that the bodily world is an illusion developed by our combined confidence lacks empirical support and runs table to the substantial human body of scientific information accumulated through ages of statement and experimentation. While subjective experiences of transcendence and religious awareness are well-documented, they do not offer aim evidence of the non-dualistic fact that ACIM describes. Moreover, the course's assertion that changing one's ideas can transform fact in a literal feeling is similar to the New Believed motion and the more new law of attraction, equally of which have been criticized for lacking scientific validity. The placebo impact and the energy of good thinking are well-documented phenomena, but they don't help the grand metaphysical statements made by ACIM.

More over, the roots of ACIM raise extra issues about their credibility. Helen Schucman, the psychiatrist who transcribed the program, identified her knowledge as obtaining dictation from an internal style she recognized as Jesus. This acim audio  technique of channeled publishing is not distinctive to ACIM and can be found in various other spiritual and spiritual texts throughout history. The subjective nature of those experiences causes it to be difficult to examine their authenticity. Experts fight that such texts are much more likely items of the unconscious brain as opposed to communications from the heavenly source. Schucman himself had a complex relationship with the product, allegedly experiencing significant inner struggle about its material and their beginnings, which gives another coating of ambiguity to the course's states of heavenly authorship.

Additionally, the language and style of ACIM in many cases are esoteric and abstract, making it burdensome for many visitors to comprehend and apply its teachings. The program is written in a highly stylized kind of British, with dense, poetic prose that may be difficult to interpret. That difficulty may cause a wide variety of understandings, some of which can diverge somewhat from the intended message. The ambiguity of the writing allows for subjective readings, which may result in misconceptions and misapplications of its principles. That insufficient quality can undermine the course's efficiency as a functional information for religious development and self-improvement.

Moreover, the professional part of ACIM can't be overlooked. Since its distribution, ACIM has spawned a profitable market of publications, workshops, seminars, and study groups. While financial achievement does not inherently negate the worth of a spiritual teaching, it will raise problems concerning the prospect of exploitation. The commercialization of religious teachings will often cause the prioritization of income over genuine spiritual growth, with people and organizations capitalizing on the course's acceptance to market products and services. This vibrant may detract from the sincerity and integrity of the teachings, spreading uncertainty on the motives behind their dissemination.