Six Primitives for Emotional Adaptation: A Structural Theory of Therapeutic Completeness in Class C

Fifty years of comparative outcome research have established two findings: no single therapy modality consistently outperforms others, and integrative approaches consistently outperform single modalities. These findings imply a complete therapeutic structure that no single tradition captures, but the field has lacked a theoretical account of that structure. I develop a structural derivation of one. First, I define Class C—the complex emotional environment of observable human life in a therapeutic setting—by six structural properties: partial observability, irreversibility, multiple local optima, commitment demand, real constraints, and nonstationarity. From these properties I derive six distinct forms of adaptive failure: signal opacity, absorbing‑trap risk, local entrapment, commitment failure, feasibility gap, and nonstationarity (the sixth condition, recalibration). Each requires its own therapeutic function; none is reducible to any other. Class C is the first formal characterisation of the human emotional environment that is generative in a precise sense: the failure modes follow from the structural properties of the environment alone, without appeal to clinical observation or theoretical tradition. Because Class C describes the actual environment of emotional life rather than a simplified model of it, the six primitives require no translation to practice and function immediately as a diagnostic instrument for therapeutic completeness. I then show that each function has been independently discovered by at least two major therapeutic traditions from opposed theoretical starting points—convergent validation that the functions are features of the clinical task, not theoretical artifacts. The characteristic failure modes of single‑modality traditions (insight without commitment, exposure non‑response in alexithymia, acceptance without movement) correspond exactly to the conditions they do not address, providing evidence for orthogonality. Finally, I argue that the six conditions form an informational chain: each resolution generates the input for the next. Addressing them out of sequence produces characteristic misdirection, not mere inefficiency. Completing a full cycle clears contamination and improves the starting state for subsequent cycles—an accumulative property that explains durable change. Specific falsification criteria are stated. *All theoretical work and literature engagement is provided in full transparency and independent verification is highly encouraged. For any feedback about the theory or collaboration regarding the research protocol, please contact me via the email address listed on the paper.