Evaluating Variable Speed of Light (VSL) Cosmologies: A Multi-Agent Empirical and Theoretical Assessment
VSL frameworks propose that the speed of light in vacuum was significantly higher in the early universe (c >> c₀) before transitioning to its contemporary value. We evaluate this hypothesis across 10 positive theoretical solutions (Horizon, Flatness, and Lambda problems) and contrast them against 10 fatal empirical constraints (Fermi-LAT LIV limits of Δc/c < 10⁻¹⁷ and the Oklo natural reactor).