theorem two_world_inherits_paper3 (e : TwoWorldEconomy N) (n : Fin N)
(hKeff : 0 < sectorEffectiveCurvature e.toNSectorEconomy n) :
0 < sectorRelaxRate e.toNSectorEconomy n :=
landscape_structure e.toNSectorEconomy n hKeffTwo-World Economy: Price vs. Production Timescale Separation