Zero-Layer Spatial Computing Master Treatise: The Geocentric Pendulum, Causal Sufficiency, and Deterministic HCI

This monograph formalizes the paradigm of Zero-Layer Spatial Computing. We demonstrate that classical mechanics serves as an effective data compressor. By coupling the interface to the planetary gravitational field via the Geocentric Pendulum, the actuator’s inertia functions as a primary analog low-pass filter. We formalize the Invariant of Causal Sufficiency (ISC), arguing that voluntary human movement collapses into an extractable point: the Dominant Nadir. This work incorporates the foundational biomechanical principles of scalar invariance, topological delegation, and semantic friction, and extends the theoretical framework to include a comparative analysis against event-based vision and a quantitative usability assessment based on Fitts’ Law.