> The minimum money unit for 100% gold-based money is a gold atom. If we start being this technical, you could set up a box with two sides with a gold atom in

> The minimum money unit for 100% gold-based money is a gold atom. If we start being this technical, you could set up a box with two sides with a gold atom in superposition. The chance of finding the gold atom on either side is 50%. Suppose the contents of both sides are owned by different people. Now it's possible to own (in expectation) 50% of the minimum money unit.