Head to head
Buddhism vs Functionalism
Buddhism’s Empty, Illusory Phenomenal Consciousness and Functionalism, compared field by field from their entries in the Atlas.
At a glance
- Buddhism belongs to the Idealism family in Kuhn's Landscape of Consciousness, Functionalism to Materialism.
- On AI consciousness, Buddhism says “Uncertain” and Functionalism says “Yes”.
- On life after death, Buddhism says “Yes” and Functionalism says “Conditional”.
- On mind uploading, Buddhism says “Not needed” and Functionalism says “Likely”.
- On meaning and purpose, Buddhism says “Cosmic/Ultimate” and Functionalism says “Humanistic only”.
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The claim
In brief
BuddhismThis theory suggests that the sense of phenomenal consciousness or 'what-it-is-like-ness' is an instance of cognitive illusion, rejecting the existence of a permanent, inner 'self' or 'soul'. It posits that consciousness, like all phenomena, is ultimately empty of intrinsic nature, and is better understood as a network of relational processes.
FunctionalismFunctionalism posits that mental states are defined by their causal relations to one another, to sensory inputs, and to behavioral outputs, independent of the physical medium (substrate) in which they are realized. The essence of consciousness is determined by how mental states function or operate, rather than by what they are materially composed of.
What consciousness is
BuddhismConsciousness (in the phenomenal sense) is identified as a cognitive illusion or conventional reality constituted by a network of processes/relations (Madhyamaka) or as an inner subjective substrate of representations (Yogācāra).
FunctionalismMental states are identified as functional states, constituted by their causal relations, roles, results, and outputs, implying they are realizable in any substrate that supports those functions.
Big questions
Can AI be conscious?Differ
BuddhismUncertainIf consciousness is fundamentally an illusion arising from a network of processes, it is unclear whether advanced computation (AI) can replicate the complex conventional reality or the specific non-self processes that generate this illusion, even though computation is not fundamentally ruled out.
FunctionalismYesFunctionalism holds that consciousness is based on function, not biology. If the correct functions can be realized computationally in non-biological substrates, AI consciousness is possible in principle and certain if Materialism is true.
BuddhismYesThe eighth (store-house) consciousness persists after death, carrying karmic energy through cycles of reincarnation. However, survival often entails expansion back into cosmic consciousness, blurring or banishing individual first-person identity ('being sugar').
FunctionalismConditionalAs a physicalist theory, consciousness is tied to the substrate. Survival beyond death of the biological body is only possible if the functional mental state can be successfully transferred (uploaded) to a new, continuing substrate (virtual immortality).
BuddhismNot neededThe theory already provides a mechanism for persistence (the eighth consciousness) or transcendence (ninth consciousness), making artificial, digital duplication (virtual immortality) philosophically moot.
FunctionalismLikelyFunctionalism serves as the theoretical basis for virtual immortality. If the functional role of the mental self can be perfectly duplicated and uploaded to a new medium, the first-person mental self is preserved.
BuddhismCosmic/UltimateThe ultimate goal is spiritual attainment (reaching the ninth consciousness or Buddha nature), which serves as the core source of energy and ultimate fulfillment, moving beyond merely humanistic purpose.
FunctionalismHumanistic onlyFunctionalism describes the mechanism by which mind/consciousness operates within a physical world, providing capacities for agency and reflection, but offers no rationale for ultimate cosmic meaning or teleology, aligning with the general stance of Materialism.
Nature of mind
Ontology
BuddhismIdealism (specifically the Yogācāra school) or Deflationary Relationalism (specifically the Madhyamaka school), where all things are conventionally real but ultimately empty of intrinsic nature.
FunctionalismPhysicalism (broadly, agnostic to substance). The theory is classified under Materialism, but it is metaphysically agnostic regarding nonphysical substances, focusing primarily on the functional description of mental states.
Mind and body
BuddhismThe relationship is understood as interdependent and relational, lacking intrinsic self/substance. The illusion of a centralized mind or self is rejected.
FunctionalismMental states are functional states identical to the functional roles that are realized or instantiated in a physical substrate, leading to 'functional state identity theses'.
Fundamental or emergent
BuddhismConventional reality constituted by relations. It is neither a primitive substance nor an emergent property in the typical Western sense, as the phenomenal self it describes is fundamentally illusory.
FunctionalismEmergent. Consciousness arises from the functional organization realized by a sufficiently complex substrate (like neural tissue or computer chips).
Qualia
BuddhismQualia ('what-it-is-like-ness') are rejected as real, intrinsic properties and are instead viewed as illusory, dissolving away in favor of a network of underlying processes.
FunctionalismThe theory traditionally struggles to account for phenomenal qualia, often addressing them by asserting that the qualitative feel is entirely exhausted by the functional role, or by coupling with representational theories.
How it works
Mechanism
BuddhismThe principle of emptiness (lack of intrinsic nature) applied to all phenomena, resulting in the realization that phenomenal consciousness is a cognitive illusion.
FunctionalismThe principle of multiple realizability, stating that mental state realization is independent of the physical substrate, contingent only upon the required function being instantiated.
Where it is
BuddhismNon-localized. Consciousness is often understood relationally. The ninth consciousness (Buddha nature) is the fundamental, purest core.
FunctionalismDistributed wherever the functional organization is successfully realized, regardless of whether the substrate is neural tissue or hardwired computing components.
What it does
BuddhismThe inward-directed seventh consciousness causes the concept of self, which is the source of deception. The eighth consciousness stores karmic energy and persists across death, thus enabling rebirth.
FunctionalismFunctions, roles, and outputs are dispositive. Mental states are causally effective because they are defined by their causal relations within the system (functional role).
Evidence and criticism
Testability
BuddhismLargely conceptual, based on internal philosophical coherence and phenomenological insights gained via meditative practices. Empirical studies sometimes correlate high-level meditation states (nirodha-samāpatti) with measurable brain changes (reduced synchronization).
FunctionalismConceptually and empirically testable. Thought experiments (like substrate replacement) probe its conceptual limits, and computational realization (AI) tests its empirical application.
Tests so far
BuddhismStudy of high meditative states (nirodha-samāpatti) showing reduced overall brain synchronization.
FunctionalismThe silicon chip replacement thought experiment is used conceptually to test whether phenomenal consciousness is preserved when the functional role is maintained across a change in substrate.
Criticisms
BuddhismWestern philosophers often find the core claim—that phenomenal consciousness is illusory—counter-intuitive and untenable. Internally, tension exists between the idealistic Yogācāra school and the relational Madhyamaka school.
FunctionalismIt is criticized heavily for failing to account for phenomenal consciousness (qualia) by describing only the functional role, leading to the 'hard problem' challenge that functional roles may not exhaust the nature of conscious experience.
Sources
Key sources
Buddhism
- Engaging Buddhism, Jay L. Garfield (2015)
- Illusionism and givenness, Jay Garfield (2016)
- The Nine Consciousness (2022)
Functionalism
- What is functionalism? (N. Block) (1980)
- What Is Functionalism? Consciousness, Function, and Representation (N. Block) (2007)
- Functionalism (J. Levin) (2023)