Incomplete Nature

In the AI Story

The book's central thesis is that conventional scientific approaches treat absence as a lack—something to be explained away—when absence is actually constitutive of the most important phenomena in the universe. The heart's function is not a property of its physical operation (contraction, valve mechanics) but of its relationship to an unrealized possibility: the organism's death if the heart fails. The symbol 'heart' refers to an organ that is typically not present when the word is used. Meaning, purpose, and value are absential: they exist in the gap between what is and what could be, between the actual and the possible.

Deacon's three-level hierarchy provides the architecture for understanding how absential properties emerge from physical processes. Thermodynamic processes dissipate energy and increase entropy—this is the baseline of physical reality. Morphodynamic processes produce pattern and regularity from dissipation: whirlpools, convection cells, crystalline structures maintained by the very process of flowing away. Teleodynamic processes produce self-maintenance, self-reproduction, and purposive orientation: the living cell that resists entropy by capturing energy flows and using them to sustain its own improbable organization. Each level is constituted by the level below but introduces properties the level below cannot produce.

The relevance to artificial intelligence is immediate: current AI architectures are morphodynamic (exhibiting pattern and regularity) but not teleodynamic (not self-maintaining, not purposively oriented, not bounded in the way living systems are). They process symbols—the surface layer of the semiotic hierarchy—without inhabiting the absential relationships that give symbols their meaning. They generate outputs oriented toward what humans care about (because they were trained on human symbolic production) without caring themselves. The framework diagnoses what is present and what is structurally absent in human-AI collaboration.

Deacon's recent applications of the Incomplete Nature framework to AI include the June 2025 paper treating LLMs as cultural DNA—informational substrates that, like biological DNA, are not themselves alive but become functional through interaction with the appropriate context. The human provides the teleodynamic context—the self-maintaining purpose, the absential orientation, the felt investment in outcomes—that activates the model's morphodynamic richness. The collaboration produces emergent properties, but the emergence depends asymmetrically on the human's irreplaceable contribution of the absential dimension.

Origin

Incomplete Nature was fifteen years in development, emerging from Deacon's dissatisfaction with every existing attempt to naturalize consciousness, intentionality, and meaning. Materialist accounts reduced mind to computation, eliminating the very properties they set out to explain. Dualist accounts preserved the properties by treating them as immaterial, thereby removing them from scientific investigation. Deacon's alternative: mind is material but emergent, constituted by constraint dynamics operating at the teleodynamic level—a level that introduces genuinely novel properties while remaining fully consistent with physical law.

The book's reception was respectful but cautious. Philosophers appreciated the attempt to naturalize intentionality but questioned whether the absential framework genuinely solved the hard problem of consciousness or merely relabeled it. Scientists appreciated the rigor but found the dynamical formalism—replete with terms like 'orthograde' and 'contragrade' processes—dauntingly abstract. The work's enduring contribution has been less in producing settled answers than in providing a vocabulary and conceptual architecture for asking more precise questions about emergence, absence, and the relationship between levels of organization.

Key Ideas

Absential properties constitute life and mind. Function, purpose, reference, meaning—all are defined by orientation toward what is not present, and this orientation is the signature of teleodynamic organization.

Three levels of emergent dynamics. Thermodynamic (dissipation), morphodynamic (pattern from dissipation), teleodynamic (self-maintenance and purpose from pattern)—each level introducing constraints absent from the level below.

Constraint as creative force. Constraints—systematic exclusions of possibility—do not limit organization; they constitute it. The cell exists because of what it excludes; meaning emerges from the narrowing of symbolic possibility.

Emergence is irreducible but physical. Higher-level properties are constituted by lower-level processes yet unpredictable from them—genuinely novel without violating physical law.

AI lacks teleodynamic organization. Current systems exhibit morphodynamic richness but not the self-maintaining, boundary-forming, purposively oriented dynamics that produce genuine absential properties.