Head to head
Global Workspace Theory vs Kastrup’s Analytic Idealism
Baars’s and Dehaene’s Global Workspace Theory and Analytic Idealism, compared field by field from their entries in the Atlas.
At a glance
- Global Workspace Theory belongs to the Materialism family in Kuhn's Landscape of Consciousness, Kastrup’s Analytic Idealism to Idealism.
- Global Workspace Theory treats consciousness as emergent; Kastrup’s Analytic Idealism treats it as fundamental.
- On AI consciousness, Global Workspace Theory says “Yes” and Kastrup’s Analytic Idealism says “No”.
- On life after death, Global Workspace Theory says “No” and Kastrup’s Analytic Idealism says “Likely”.
- On mind uploading, Global Workspace Theory says “Yes” and Kastrup’s Analytic Idealism says “No”.
- On meaning and purpose, Global Workspace Theory says “Humanistic only” and Kastrup’s Analytic Idealism says “Cosmic/Ultimate”.
Add more theories to this comparisonCompare other theories
The claim
In brief
Global Workspace TheoryThis theory posits that conscious awareness is constituted by specific multi-sensory, multi-cognitive information that achieves brain-wide presence and broad accessibility. It conceptualizes consciousness as an inner 'theater' where this information is globally broadcast, reconciling the limited capacity of momentary conscious content with vast long-term memory access.
Kastrup’s Analytic IdealismAnalytic Idealism is a consciousness-only ontology asserting that phenomenal consciousness is fundamental, the singular primitive of reality. Everything else in nature, including the physical world and individual minds, is grounded in patterns of excitation or expressions of this spatially unbound cosmic consciousness.
What consciousness is
Global Workspace TheoryConsciousness is identified as the instantaneous global availability and broad accessibility of specific, integrated information across numerous specialized modular systems in the brain.
Kastrup’s Analytic IdealismConsciousness is identified as the singular, spatially unbound, fundamental ontological primitive (cosmic consciousness).
Big questions
Can AI be conscious?Differ
Global Workspace TheoryYesSince the theory defines consciousness in terms of information-processing computations and architectures, and proponents suggest novel machine architectures could be based on these computations, AI consciousness is possible in principle.
Kastrup’s Analytic IdealismNoKastrup suggests conscious AI is a fantasy, arguing that consciousness is not reducible to computation or information processing that current computers perform. Consciousness is tied to fundamental phenomenal reality, not hardware function.
Global Workspace TheoryNoConsciousness is understood as being entirely dependent on specific, complex biological brain processes, which cease upon biological death.
Kastrup’s Analytic IdealismLikelyBodily death is predicted to result in the cessation of the local boundary (dissociated alter), causing conscious inner life to expand back into the underlying universal consciousness. This is supported circumstantially by reports of near-death experiences (NDEs).
Global Workspace TheoryYesIf consciousness is wholly explained by the computational organization and information flow of the brain, a perfect duplication or uploading of these mechanisms into a non-biological substrate should preserve the first-person mental self.
Kastrup’s Analytic IdealismNoConsciousness is not an algorithm or software program reducible to physical structure; therefore, uploading neural patterns (simulated continuation) would only result in a functional duplication ('deep fake') lacking true subjective experience.
Global Workspace TheoryHumanistic onlyAs a Materialist/Neurobiological theory, it does not mandate ultimate cosmic meaning or purpose, but consciousness provides essential functions (like memory reconciliation and integrated awareness) that underpin human agency and self-created value.
Kastrup’s Analytic IdealismCosmic/UltimateAs consciousness is ultimate reality, existence is fundamentally grounded in mind/awareness, intrinsically providing meaning and purpose rooted in the singular, fundamental consciousness.
Nature of mind
Ontology
Global Workspace TheoryPhysicalism
Kastrup’s Analytic IdealismIdealism (Modern analytic metaphysics)
Mind and body
Global Workspace TheoryIdentity/Correlation. The mind (conscious awareness) is identified as, or strongly correlates with, the specific, biologically realized processes of global information broadcasting in the brain.
Kastrup’s Analytic IdealismIndividual minds are dissociated alters of the cosmic consciousness. The inanimate physical world is the extrinsic view of thoughts and emotions within this universal consciousness, meaning a physical world independent of consciousness is a mistaken intellectual abstraction.
Fundamental or emergent
Global Workspace TheoryEmergent
Kastrup’s Analytic IdealismPrimitive (Fundamental)
Qualia
Global Workspace TheoryPhenomenal experience (qualia) is accounted for by proposing a strictly biological mechanism for conscious awareness. Qualia correspond to the content of the integrated, reportable multi-sensory information that is broadly accessible within the global workspace.
Kastrup’s Analytic IdealismQualia are intrinsically real and fundamental, constituting patterns of excitation within the fundamental phenomenal consciousness.
How it works
Mechanism
Global Workspace TheoryGlobal broadcasting and accessibility of information, allowing a single coherent content to be made available to many specialized, unconscious modules simultaneously.
Kastrup’s Analytic IdealismThe principle of dissociation, which localizes the unitary cosmic consciousness into seemingly isolated subjects (alters).
Where it is
Global Workspace TheoryBrain-wide, encompassing widespread areas, particularly associated with frontal and parietal regions (often characterized as a 'front of the head' theory in contrast to 'back of the head' theories like IIT).
Kastrup’s Analytic IdealismUbiquitous; consciousness is fundamental and spatially unbound. Individual conscious subjects are localized boundary conditions (dissociated alters).
What it does
Global Workspace TheoryGlobal broadcasting constitutes consciousness. Functionally, it allows for flexible control and reconciliation between limited momentary conscious content and long-term memory resources.
Kastrup’s Analytic IdealismCausation is grounded in consciousness itself. The inanimate world is the extrinsic manifestation of universal mentation, while the brain serves to constrain or mediate individual consciousness.
Evidence and criticism
Testability
Global Workspace TheoryEmpirically testable
Kastrup’s Analytic IdealismSpeculative/Conceptual. Testable primarily by demonstrating the incoherence or lack of parsimony of rival metaphysical theories and by predicting experiential outcomes in extreme states.
Tests so far
Global Workspace TheoryNeuroimaging and computer modeling studies used to investigate its claims. It is implicitly subject to the 'neurogeographic' debate contrasting 'front of the head' theories with posterior theories.
Kastrup’s Analytic IdealismCites neuroimaging of psychedelic states (rich experience correlating with reduced brain activity) to critique physicalist theories.
Criticisms
Global Workspace TheoryCriticized for focusing on 'access' rather than genuine phenomenal experience, exemplified by the critique that the theory is 'all about access but not about seeing'. It faces tension regarding whether global broadcasting is necessary or merely a consequence of consciousness.
Kastrup’s Analytic IdealismThe main critical challenge is the 'decomposition problem': explaining how seemingly distinct phenomenal inner lives of subjects can arise within a fundamentally unitary phenomenal field. Also must reconcile the independence of the common external world from personal volition.
Sources
Key sources
Global Workspace Theory
- A Cognitive Theory of Consciousness (1988)
- In the Theater of Consciousness (1997)
- Towards a cognitive neuroscience of consciousness: basic evidence and a workspace framework, Dehaene and Naccache (2000)
Kastrup’s Analytic Idealism
- An ontological solution to the mind-body problem (2017)
- The universe in consciousness (2018)
- Analytic Idealism: A Consciousness-Only Ontology, Dissertation (2019)