Dark Matter & Dark Energy (95% of the Universe) Through the Lens of GCST Global Complexity–Stability Theory as a Thermodynamic Origin of the Dark Sector

Abstract ΛCDM cosmology attributes ~95% of the critical density ρ_crit to dark matter (~27%) and dark energy (~68%), with baryonic matter comprising only ~5%. No direct detection of dark matter particles exists, and the nature of dark energy remains open. Global Complexity–Stability Theory (GCST) proposes that both dark components are manifestations of accumulated structural debt D — non-dissipated instability from the early universe. The cosmic stability index is defined as Debt D manifests differently depending on the local complexity gradient ∇C: ● high ∇C → effective attractive mass (dark matter) ● low ∇C → effective negative pressure (dark energy) The observed 95:5 ratio is tied to G_cosmo(now) ≈ 0.78–0.85 → ρ_D / ρ_crit ≈ 0.92–0.95.