theorem diversification_degradation_ratio {T Tstar : ℝ}
(hTs : 0 < Tstar) (hT : 0 < T) (hTlt : T < Tstar) :
(1 - T / Tstar) ^ 2 < (1 - T / Tstar) := by
exact crisis_sequence_ordering (div_pos hT hTs) (by rw [div_lt_one hTs]; exact hTlt)Bilateral Trade Collapse Ordering