Forbes: Boggs’ project began with a simple exchange. At a Chicago diner one day, he ordered a doughnut and coffee. On his napkin he distractedly wrote the number one, gradually embellishing it until he found himself looking at an abstract $1 bill. The waitress noticed too, and liked it so much she wanted to buy it. Instead of selling, he offered it in exchange for his ninety cent snack. She accepted, and as he got up to leave, she gave him a dime in change. That became the model for every transaction that followed...
