Cowries to Code: A Short History of Money
Before there were candlestick charts, there were cowrie shells, copper coins, and paper promises. How money learned to travel.
Trade has a stubborn problem: the fisherman with fish to spare wants shoes, but the cobbler he finds wants grain, not fish. Economists call this the 'double coincidence of wants,' and for most of human history, solving it meant carrying something everyone would accept — even if nobody particularly needed it.
Cowrie shells filled that role for an unusually long time across an unusually wide stretch of the world. Small, durable, impossible to counterfeit with the tools of the day, and easy to count, they moved as currency across West Africa, the Indian subcontinent, and parts of China centuries before anyone struck a coin. In Bengal, cowries remained in everyday use well into the colonial period, long after silver coinage existed elsewhere.
Coins arrived when kingdoms wanted currency they controlled. The kingdom of Lydia, in modern-day Turkey, is usually credited with the first standardized metal coinage around 600 BCE. India developed its own tradition independently: punch-marked silver coins, stamped rather than cast, circulated under the Mauryan Empire from around the 3rd century BCE — proof that the idea of 'durable, portable, government-backed value' kept getting reinvented wherever trade got complicated enough to need it.
Paper money is older than most people assume, and it wasn't a European invention. Tang and Song dynasty China issued promissory notes as early as the 7th to 10th centuries, largely because strings of copper coins were exhaustingly heavy to carry on long trade routes. European banknotes, and eventually the gold standard that backed them, followed many centuries later.
The gold standard itself didn't survive the 20th century intact. By 1971, the United States had suspended the dollar's convertibility into gold — the 'Nixon Shock' — and the world's major currencies drifted toward the fiat system still in use today: money that has value because governments and markets agree it does, not because it's backed by a metal in a vault.
Today, for most people, money barely exists as an object at all. India's UPI network alone routes billions of transactions a month between bank accounts, no cash or card required, and central banks including the Reserve Bank of India have been piloting their own digital currencies. Money, in 2026, is mostly a very well-trusted database entry.
That's the money that eventually finds its way onto a trading floor — pooled into funds, lent out as bonds, or bet on a company's future in the form of a share. Where it goes from there, and what happens when everyone tries to move it at once, is the subject of the next dispatch.