Similar title to Koopmans, T.C. (1974). Proof for a Case where Discounting Advances the Doomsday. IIASA Research Report (Reprint). IIASA, Laxenburg, Austria: RR-74-001. Reprinted from The Review oF Economic Studies Symposium, Tjalling C. Koopmans, p. 117-120 [1974].