sh flow rate f. Then (A1.6) can be reexpressed as r=gtf. (A1.6a) (A1.3) combines with (A1.6) to show K. C T Y Ay, , at the collective scale. (A1.7) K, K,. K, Define “pure consumption rate” C, as C, /K,,, and substitute to show r=gtc,, at the collective scale. (A1.7a) APPENDIX A: The Argument in Nota