Empirically, there's little to number scientific evidence promoting the metaphysical claims created by ACIM. The idea that the physical world is an illusion developed by our combined ego lacks empirical help and runs table to the great body of scientific information accumulated through generations of statement and experimentation. While subjective activities of transcendence and religious awareness are well-documented, they do not give target proof of the non-dualistic truth that ACIM describes. More over, the course's assertion that changing one's ideas may alter reality in a literal feeling is similar to the New Thought movement and the more new legislation of attraction, both of which were criticized for lacking medical validity. The placebo influence and the power of good thinking are well-documented phenomena, but they cannot support the grand metaphysical states created by ACIM.

More over, the beginnings of ACIM increase additional issues about their credibility. Helen Schucman, the psychologist who transcribed the course, explained her knowledge as obtaining dictation from an interior voice she discovered as Jesus. This process of channeled writing isn't distinctive to ACIM and can be found in various acim podcast other religious and spiritual texts for the duration of history. The subjective character of these activities makes it difficult to confirm their authenticity. Experts disagree that such texts are much more likely products of the unconscious brain rather than communications from a divine source. Schucman himself had a complex relationship with the material, reportedly encountering significant inner struggle about their content and their sources, which provides still another coating of ambiguity to the course's statements of heavenly authorship.

Additionally, the language and type of ACIM are often clever and abstract, making it difficult for several readers to comprehend and apply their teachings. The program is prepared in a highly stylized form of English, with heavy, lyrical prose that can be tough to interpret. This complexity may result in a wide selection of understandings, a few of which can diverge somewhat from the intended message. The ambiguity of the text permits subjective numbers, which can lead to misconceptions and misapplications of their principles. That not enough clarity may undermine the course's success as a functional guide for religious development and self-improvement.

Furthermore, the professional aspect of ACIM can not be overlooked. Because its distribution, ACIM has spawned a profitable market of publications, workshops, seminars, and study groups. While economic success doesn't inherently negate the value of a religious teaching, it does raise concerns concerning the possibility of exploitation. The commercialization of spiritual teachings will often lead to the prioritization of income around true religious progress, with individuals and companies capitalizing on the course's recognition to market products and services. This vibrant can detract from the sincerity and reliability of the teachings, throwing doubt on the motives behind their dissemination.