theorem learning_reduces_friction {β_L V T : ℝ}
(hβ : 0 < β_L) (hV : 0 < V) (hT : 0 < T) :
learningFrictionRate β_L V T < 0 := by
simp only [learningFrictionRate]
linarith [mul_pos hβ (mul_pos hV hT)]Results T-80 through T-89: Endogenous Information Friction Dynamics