Head to head
Christian Soul Theory vs Dennett’s Illusionism
Christian Soul Theory and Dennett’s Illusionism, compared field by field from their entries in the Atlas.
At a glance
- Christian Soul Theory belongs to the Dualism family in Kuhn's Landscape of Consciousness, Dennett’s Illusionism to Materialism.
- Christian Soul Theory treats consciousness as fundamental; Dennett’s Illusionism treats it as emergent.
- On AI consciousness, Christian Soul Theory says “Unlikely” and Dennett’s Illusionism says “Possible”.
- On life after death, Christian Soul Theory says “Yes” and Dennett’s Illusionism says “No”.
- On meaning and purpose, Christian Soul Theory says “Cosmic/Ultimate” and Dennett’s Illusionism says “Humanistic only”.
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The claim
In brief
Christian Soul TheoryThis theory posits that the human person is composed of two fundamentally distinct substances: a wholly immaterial, substantial soul (the self) and a physical body or brain. The soul is the locus of consciousness, provides personal identity, and interacts with the body in a cause-and-effect manner.
Dennett’s IllusionismDaniel Dennett argues that qualia, conceived as intrinsic, ineffable, private, and immediately known properties of experience, do not exist; they are philosophers’ inventions. Experience is real, but it is not what it seems from the inside: the brain’s unconscious processes produce a benign ‘user illusion’, and there is nothing to consciousness beyond the functions and dispositions involved.
What consciousness is
Christian Soul TheoryConsciousness and the mind are grounded in the substantial, unified, wholly immaterial soul, which is the entity that has experiences and grounds personal identity.
Dennett’s IllusionismConsciousness is the functional activity of the brain, which presents itself to us as a user illusion. ‘There are no qualia.’
Big questions
Can AI be conscious?Differ
Christian Soul TheoryUnlikelyIf consciousness requires a radically separate, nonphysical substance (soul) that is divinely created or allocated, non-biological intelligences could not generate this necessary component, making AI consciousness impossible.
Dennett’s IllusionismPossibleSince consciousness is nothing beyond functions and dispositions, a machine with the right functional organization could have it; Dennett does not take this up here.
Christian Soul TheoryYesThe soul is the ‘real you,’ existing independently of the body and providing the clearest mechanism for the persistence of individual consciousness post-mortem, fulfilling the core tenet of Abrahamic religions.
Dennett’s IllusionismNoSince consciousness is a product of the brain’s processes, it ends when they end.
Christian Soul TheoryNoUploading neural patterns and pathways would only duplicate the physical basis of consciousness. Since the necessary nonphysical substance (the soul) would be absent from the duplicate, first-person mental self-preservation would be impossible.
Dennett’s IllusionismNo position
Christian Soul TheoryCosmic/UltimateAs a theological theory, it provides ultimate meaning, purpose, and value tied to divine creation, destiny, and the spiritual nature of human existence.
Dennett’s IllusionismHumanistic onlyDennett’s materialism, and his place among the New Atheists, leave no room for cosmic purpose.
Nature of mind
Ontology
Christian Soul TheorySubstance Dualism. Reality consists of at least two ontological categories: physical (brain/body) and nonphysical (soul).
Dennett’s IllusionismPhysicalism (illusionist)
Mind and body
Christian Soul TheoryInteractionist: The immaterial soul relates to the physical body/brain in an informing and cause-effect way, meaning physical states cause phenomenal states, and phenomenal states cause physical states.
Dennett’s IllusionismConsciousness is wholly a product of the brain’s unconscious processes. Dennett rejects any inner, non-physical domain of felt properties.
Fundamental or emergent
Christian Soul TheoryPrimitive. The soul is a substantial, nonphysical substance, often held to be created and allocated by God (Creationism) rather than arising from material processes.
Dennett’s IllusionismEmergent
Qualia
Christian Soul TheoryQualia (qualitative feel) are phenomenal properties borne by the immaterial soul, which provides the single, unitary awareness of complex experiences.
Dennett’s IllusionismThere are no qualia in the traditional sense. Dennett calls the supposed intrinsic, ineffable, private properties ‘nothing but philosophers’ inventions’.
How it works
Mechanism
Christian Soul TheoryInteractionism, which requires that the physical world is not causally closed, allowing the nonphysical soul to exert causal power over the physical brain and vice versa.
Dennett’s IllusionismThe user illusion. As a computer’s desktop icons stand in for complex underlying processes, the brain presents itself to us in a simplified form we mistake for an inner world of qualities.
Where it is
Christian Soul TheoryThe non-extended soul is associated with the body, being fully 'present' at each point within it.
Dennett’s IllusionismIn the brain’s unconscious processes, with no inner theater.
What it does
Christian Soul TheoryThe soul's main functional role is providing causal efficacy for mental states (especially in relation to libertarian free will) and grounding personal identity. It also gives form to and animates the body.
Dennett’s IllusionismThe user illusion is benign: it lets us manage ourselves without access to the brain’s underlying complexity.
Evidence and criticism
Testability
Christian Soul TheorySpeculative/Philosophical. Direct empirical testing is impossible due to the soul’s nonphysical nature. It is argued that empirical evidence for survival beyond death (like NDEs/OBEs) would instantaneously falsify materialism and support dualism.
Dennett’s IllusionismConceptually testable
Tests so far
Christian Soul TheoryReported observations such as near-death experiences (NDEs) and out-of-body experiences (OBEs) are cited by adherents as phenomena requiring a nonphysical explanation, which the soul provides.
Dennett’s IllusionismNot stated
Criticisms
Christian Soul TheoryThe primary tension is the problem of mental causation (how an immaterial soul can causally interact with the physical body/brain) and the conflict with the widely accepted scientific principle of the causal closure of the physical world. Critics often attribute persistence in this view to 'folk myths' or persistent traditions.
Dennett’s IllusionismDennett is often read as denying that experience exists, and critics reply that an illusion of experience would itself be an experience. Dennett resisted the eliminativist label, though many philosophers apply it to his rejection of qualia.
Sources
Key sources
Christian Soul Theory
- The Substance of Consciousness: A Comprehensive Defense of Contemporary Substance Dualism (2023)
- The Soul: How We Know It’s Real and Why it Matters, J.P. Moreland (2014)
- Mind, Brain, and Free Will, Richard Swinburne (2013)
Dennett’s Illusionism
- Consciousness Explained, Daniel Dennett
- I've Been Thinking, Daniel Dennett (2023)
- Dennett’s Illusionism (Landscape of Consciousness), Daniel Dennett (1992)