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1·As a result we should all be prepared more certainly to address living in a barter economy and an economic environment that is increasingly volatile hostile and challenging.

因此，我们都应该准备更多的肯定，以解决生活在物物交换经济和日益动荡的，敌对的和富有挑战性的的经济环境。

2·The use of a single medium is highly advantageous for the same reasons that a money economy is superior to a barter economy: it makes exchanges possible on an incalculably wider scale.

这种对单一交换媒介的使用，就象货币社会之所以比物物交换的原始社会更为进步的原因一样，是相当有利的：因为这使交换可以在不可胜数的大规模情况下得以进行。