Head to head
Attention Schema Theory vs Hoffman’s Conscious Realism
Attention Schema Theory and Hoffman’s Conscious Realism: The Case Against Reality, compared field by field from their entries in the Atlas.
At a glance
- Attention Schema Theory belongs to the Materialism family in Kuhn's Landscape of Consciousness, Hoffman’s Conscious Realism to Idealism.
- Attention Schema Theory treats consciousness as emergent; Hoffman’s Conscious Realism treats it as fundamental.
- They give the same kind of answer on AI consciousness.
- On life after death, Attention Schema Theory says “No” and Hoffman’s Conscious Realism says “Likely”.
- On mind uploading, Attention Schema Theory says “Possible” and Hoffman’s Conscious Realism says “Likely”.
- On meaning and purpose, Attention Schema Theory says “Humanistic only” and Hoffman’s Conscious Realism says “Cosmic/Ultimate”.
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The claim
In brief
Attention Schema TheoryThis theory posits that consciousness arises when the brain constructs a quick, simplified, internal model—an attention schema—of its own process of attention. The brain mistakenly interprets and reports this internal representation as a subjective, non-physical essence or a 'self-caricature,' even though it is fundamentally a computational product.
Hoffman’s Conscious RealismThis theory asserts that evolution selects for survival and reproductive fitness, not for veridical perception of reality; consequently, spacetime and physical objects function merely as an 'interface' or illusion guiding adaptive behavior. Ultimate reality is fundamentally composed of interacting conscious agents and their experiences, which are primary to, and generative of, the physical world.
What consciousness is
Attention Schema TheoryConsciousness is identified as the brain’s internal representation or simplified model of its own mechanism of attention (the attention schema), which is a specific example of higher-order thought.
Hoffman’s Conscious RealismConsciousness is identified as the fundamental reality, structured as a vast social network of interacting 'conscious agents' and their experiences.
Big questions
Can AI be conscious?Both agree
Attention Schema TheoryLikelySince consciousness is defined as a computational process (the creation of an attention schema), in principle, artificial systems that implement the necessary computational architecture could become conscious. Furthermore, observers will inevitably make the social attribution of consciousness to sufficiently complex AI systems that act like they are conscious.
Hoffman’s Conscious RealismLikelyAs consciousness is fundamental (Idealism), it is not restricted to biological matter. If an artificial system achieves the organizational complexity characteristic of a 'conscious agent', it could potentially tap into the fundamental consciousness field, regardless of its physical substrate.
Attention Schema TheoryNoAs a Materialist/Neurobiological theory, consciousness is tied to the physical substrate (the biological, information-processing machine), precluding survival beyond the decay of the body.
Hoffman’s Conscious RealismLikelySince consciousness is fundamental and generates the physical interface, the individual conscious agent is likely to persist beyond the disintegration of the biological body/interface.
Attention Schema TheoryPossibleIf the consciousness is realized as a computational structure (the attention schema), and if this structure and the relevant information processing systems can be accurately uploaded to a non-biological medium, virtual immortality is theoretically possible.
Hoffman’s Conscious RealismLikelyIf the brain is merely an interface for fundamental consciousness, virtual immortality becomes a matter of reproducing the necessary structures or functions (the 'icon' or interface) needed to manifest the individual conscious agent in a non-biological medium.
Attention Schema TheoryHumanistic onlyConsciousness provides an adaptive, evolutionary purpose (monitoring and regulating attention for action control), but does not imply any ultimate or cosmic meaning, consistent with Materialism.
Hoffman’s Conscious RealismCosmic/UltimateIdealism fundamentally supports ultimate meaning and purpose. Reality is composed of interacting conscious agents whose existence and actions (influencing other agents) imply inherent value and purpose.
Nature of mind
Ontology
Attention Schema TheoryPhysicalism
Hoffman’s Conscious RealismIdealism
Mind and body
Attention Schema TheoryConsciousness is the report generated by a biological, information processing machine (the brain) through the assessment of its internal data, meaning mental states are computational and wholly physical.
Hoffman’s Conscious RealismConsciousness is fundamental and creates spacetime and objects, reversing the conventional arrow of causation. Brain activity correlates with mental states because consciousness creates the brain activity/physical world interface.
Fundamental or emergent
Attention Schema TheoryEmergent
Hoffman’s Conscious RealismPrimitive
Qualia
Attention Schema TheoryConsciousness is described as a 'self-caricature' or an illusory report of a non-physical essence, suggesting a deflationary or illusionist account of qualia, akin to Daniel Dennett’s view.
Hoffman’s Conscious RealismQualia are implied to be the fundamental experiences inherent to the conscious agents, which are then translated into simplistic icons (like colors or objects) within the spacetime interface.
How it works
Mechanism
Attention Schema TheoryThe construction and maintenance of a simplified internal model (the attention schema) of the process of attention, rooted in principles from control engineering.
Hoffman’s Conscious RealismThe principle of evolution favoring fitness over veridical perception leads to the construction of a simplified, illusionary 'interface' (spacetime and physical objects) that guides adaptive behavior.
Where it is
Attention Schema TheoryLocated within the biological, information-processing system of the brain.
Hoffman’s Conscious RealismConsciousness is fundamental in the universe. It is not a product of space and time or anything inside space and time; spacetime is merely a format for conscious experiences (the interface).
What it does
Attention Schema TheoryThe functional role of the attention schema is to monitor and regulate the brain's attention in order to control actions in the world. The resulting capacity allows the system to claim consciousness.
Hoffman’s Conscious RealismConsciousness is causally fundamental. The functional role of the perceived physical world is solely to enhance fitness and reproductive success by guiding behavior.
Evidence and criticism
Testability
Attention Schema TheoryEmpirically testable
Hoffman’s Conscious RealismHighly speculative/ontological. Conceptually testable via the mathematical formulation of consciousness agents. Empirical evidence relies on common perceptual illusions (reinterpreted to support Idealism).
Tests so far
Attention Schema TheoryNot stated
Hoffman’s Conscious RealismNot stated
Criticisms
Attention Schema TheoryThe theory explains how a system can *claim* consciousness but faces the general limitation, shared by similar functionalist models, of conclusively proving or explaining the actual subjective feel (the 'anybody home' problem) which remains eternally uncertain, even by the proponent's admission.
Hoffman’s Conscious RealismCriticized for interpreting empirical evidence (like user illusions) diametrically opposite to materialist accounts (such as Dennett's and Graziano's eliminative materialism). It requires reversing the conventional causal relationship between brain and mind.
Sources
Key sources
Attention Schema Theory
- True nature of consciousness: solving the biggest mystery of your mind, M. Graziano (2019)
- Rethinking Consciousness: A Scientific Theory of Subjective Experience, M. Graziano (2019)
- Can consciousness be non-biological?, M. Graziano (2014)
Hoffman’s Conscious Realism
- The Case against Reality: How Evolution Hid the Truth from Our Eyes, D. Hoffman (2019)
- Conscious realism and the mind-body problem, D. Hoffman (2008)
- Fact, fiction, and fitness, C. Prakash, C. Fields, D.D. Hoffman, R. Prentner, M. Singh (2020)