The Fifth Horseman
通货膨胀使货币使用成本高昂，迫使交易者回归物物交换，但在高度专业化的现代经济中，找到双向需求匹配的交易对象极为困难，因此物物交换不可行。
Inflation makes money expensive to use, driving transactors back to barter—to finding someone who not only can sell what you want to buy but also wants to buy what you can sell. Because finding that someone us so hard in highly specialized modern economies, they cannot rely on barter.