This white paper proposes that the individuality of human beings is not the product of free-floating personal uniqueness, but the expression of distributed functional specialization within a group organism. Just as an ant colony operates as a single organism whose functions are distributed across physically separate bodies, a human group operates as a single adaptive unit whose survival functions are distributed across individuals whose neocortical architectures are categorically biased toward different functional roles. The paper introduces the biological spectrum of functional distribution, tracing a continuous line from insect colonies (pure line spectrum, no individual autonomy) through social mammals (limited modulation) to humans, who represent a qualitative transition point: the emergence of a neocortical layer that adds continuous fine-tuning on top of the categorical base, producing the state operationally defined as choice. Four axes of functional distribution are identified: movement versus settlement, exploration versus preservation, risk-taking versus risk-avoidance, and leadership versus stabilization. A six-stage pathway traces their ORIGIN from DNA through neurodevelopmental bias, early temperament, functional differentiation, social role stabilization, to group-level functional expansion. The paper introduces the distinction between continuous spectrum and line spectrum as the structural key to understanding both human cognition and contemporary AI systems. It reframes free will not as a property (something one possesses or lacks) but as a state of the brain's integrative operation — the state in which the neocortex's continuous fine-tuning layer actively modulates the categorical base. The claim "free will is an illusion" is itself shown to be ill-posed, as it remains within the property framework. The paper applies the FACT-and-ORIGIN methodology developed in the META Physics project to biology and cognition, demonstrating that the same analytical tools used to trace the ORIGIN of the fine-structure constant can be applied to trace the ORIGIN of human individuality. Companion paper: "Failure Patterns and Methodological Discipline in LLM-Assisted Independent Physics Research" (MP-WP-AI-METHOD-EN), which documents how the spectrum concept applies to AI failure patterns in research practice.
Cheong-Gwan Lee (Sun,) studied this question.