He points out that this is a system that "extends through generations," but each generation has unique characteristics. And because the quality and quantity of service is hard to calculate, those who deposit services won't be able to count on getting something equal in return.
他指出，老人服務銀行是一種「世代持續服務」，但每一代的人口可能會有不對等的現象，再加上服務的品質、內容很難量化計算，因此先前的付出，不一定能得到等量的回饋。