Planetary Core as Regulator of the Local R-Domain: The KDS Framework and a Quantitative Integration Metric for Planet Earth

Within the Quantum Dual Symmetry (KDS) framework, reality is described by a two-domain structure: a deep R-domain (the space of potentials and integration) and a manifest L-domain (the space–time observables). In this paper I propose that Earth’s planetary core functions as the main regulator of the local R-domain and I introduce a planetary integration metric Φ̃⊕(t), defined over a combination of four observable components: geomagnetic coherence, seismic criticality, biospheric complexity, and the entropy of extreme events. A pilot reconstruction of Φ̃⊕(t) for the period 1900–2020 shows that the metric is operationally measurable (typical values Φ̃⊕ ≈ 0.45 ± 0.08) and that magnetic coherence correlates strongly with overall planetary integration (Pearson coefficient r(I_mag, Φ̃⊕) ≈ 0.8). On this basis I formulate four falsifiable predictions: (1) local maxima of Φ̃⊕ precede “explosions” of speciation with a lag of 5–15 Myr; (2) geomagnetic reversals deviate from simple Poisson clustering and display critical slowing down in I_mag immediately before transitions; (3) planets without an active dynamo have systematically lower Φ̃⊕ and a limited biospheric potential; (4) long-term neuronal complexity correlates with trends in Φ̃⊕, under appropriate control of ecological covariates. A minimal coupled system of ordinary differential equations (EarthKDSModel) captures the basic core–biosphere dynamics and allows numerical exploration of stable and transient regimes of planetary integration. In this way, the KDS framework moves from a purely conceptual picture to an empirically testable planetary science, with direct implications for comparative planetology and astrobiology.