Well, we especially suck at remembering numbers when it’s something like ‘how much I owe Bob’ hah. At least for many people. I expect this writing was a way to

Well, we especially suck at remembering numbers when it’s something like ‘how much I owe Bob’ hah. At least for many people. I expect this writing was a way to help reduce civil unrest/murder by reducing he said/she said arguments about goods, services, money, etc.