From a mental viewpoint, the sources of ACIM increase issues about its validity. Helen Schucman, the principal scribe of the text, said that the language were dictated to her by an inner style she determined as Jesus. This method of getting the text through inner dictation, called channeling, is usually achieved with skepticism. Critics disagree that channeling can be recognized as a mental sensation rather than genuine spiritual revelation. Schucman herself was a clinical psychologist, and some suggest that the style she heard could have been a manifestation of her subconscious mind rather than an additional divine entity. Furthermore, Schucman stated ambivalence about the task and their origins, often pondering their credibility herself. That ambivalence, coupled with the method of the text's reception, casts doubt on the legitimacy of ACIM as a divinely influenced scripture.

The content of ACIM also attracts scrutiny from a philosophical angle. The class shows that the planet we perceive with this senses can be an impression and that our true fact lies beyond this bodily realm. That idealistic see, which echoes specific Western ideas, issues the materialistic and scientific foundations of Western thought. Critics argue that the claim tha  david hoffmeister t the physical world is definitely an impression is not substantiated by empirical evidence and operates table to the medical technique, which relies on observable and measurable phenomena. The thought of an illusory earth might be convincing as a metaphor for the disturbances of belief brought on by the ego, but as a literal assertion, it lacks the scientific help needed to be considered a legitimate illustration of reality.

More over, the sensible program of ACIM's teachings may be problematic. The program advocates for a revolutionary type of forgiveness, indicating that all issues are illusions and ought to be neglected in favor of realizing the inherent unity of most beings. As the practice of forgiveness can indeed be healing and transformative, ACIM's approach may lead individuals to curb reliable feelings and ignore real injustices. By mounting all bad activities as illusions produced by the confidence, there is a risk of minimizing or invalidating the existed activities of putting up with and trauma. That perception can be specially dangerous for individuals dealing with significant dilemmas such as punishment or oppression, as it might suppress them from seeking the required help and interventions.

Another level of contention is just how ACIM has been promoted and commercialized. Since their book, ACIM has spawned a substantial industry of workshops, seminars, and supplementary materials. Critics argue that commercialization undermines the spiritual reliability of the teachings, turning what's proposed to become a sacred text in to a profit-driven enterprise. The expansion of ACIM-related products and companies has led some to issue the motivations behind its campaign and the authenticity of those that declare to teach its principles. This commercial element can produce a barrier to real religious exploration, as individuals may be much more centered on getting the next book or joining the next class rather than participating profoundly with the teachings themselves.