Money is one of humanity’s most clever and enduring technologies. It is a brilliant way of transferring value across vast distances and decentralizing our economy. Barter makes sense on a hyperlocal, neighbourly scale, but you can’t run a vast industrial economy on it. As Niall Ferguson chronicles in his excellent The Ascent of Money, increases in numismatic sophistication were vital in increasing the range of trade and our abilities to innovate and provide services…