theorem ramsey_goldenRule_wedge {τ_K ρ_time δ : ℝ} :
eulerSteadyStateMPK τ_K ρ_time δ - δ = eulerSteadyStateReturn τ_K ρ_time := by
simp only [eulerSteadyStateMPK, eulerSteadyStateReturn]; ringAccumulation Dynamics (Layer 2 of Macro Extension)