Positioning and Core Claim of the Directionality-Based Measurement Framework — A Measurement-Theoretic Foundation for V = dΩ/dt

This document clarifies the scope, positioning, and single central claim of the present theoretical framework. This work is NOT: - an experimental psychology study, - a clinical investigation, - a social statistical analysis, - or a proposal of interventions, treatments, or prescriptions. Instead, it is a theoretical contribution to measurement theory and state estimation, closely aligned with theoretical neuroscience and dynamical systems modeling. The sole central claim of this work is: Human well-being and adaptation are better characterized by the temporal derivative of a latent directionality potential (V = dΩ/dt) than by static state variables such as reward, affect, or satisfaction. This is the only claim advanced in this document. All definitions, conceptual distinctions, and mathematical formulations serve exclusively to support, formalize, or contextualize this single statement. The key conceptual shift introduced here is a change in the primary measurement target: from static state variables ("which state a system is in") to directional dynamical quantities ("which direction the system is moving toward"). Accordingly, the framework reframes adaptation, stagnation, and collapse as directional dynamical phenomena rather than static or quasi-static conditions. This document intentionally leaves empirical validation, parameter specification, and applied deployment to future independent studies. Its purpose is to establish a minimal, falsifiable, and structurally grounded measurement-theoretic foundation upon which such work may later build. License: CC-BY 4.0