“One particular incident had seared itself into Wences’s memory. In 1984, during the first major episode of hyperinflation after the Argentinian military junta lost power, Wences’s mother came to get him and his two sisters from school. His mom was carrying two grocery bags filled with money—the salary she had just been given in cash. She rushed with Wences and his sisters to the grocery store and had them run through the aisles, grabbing as much food as possible before the hyperinflation caused the goods to be repriced. A man walked through the aisles all day doing nothing but repricing the items on the shelves to keep up with the rapidly changing value of the peso. When Wences and his mother got to the register, he and his sisters would run back and grab more food if they still had any money left. Holding on to money was equal to losing it. These experiences gave Wences insights into the nature of money that most people in the world learn only from textbooks. In America, the dollar seamlessly serves the three functions of money: providing a medium of exchange, a unit for measuring the cost of goods, and an asset where value can be stored. In Argentina, on the other hand, while the peso was used as a medium of exchange—for daily purchases—no one used it as a store of value. Keeping savings in the peso was equivalent to throwing away money. So people exchanged any pesos they wanted to save for dollars, which kept their value better than the peso. Because the peso was so volatile, people usually remembered prices in dollars, which provided a more reliable unit of measure over time.”