Spain's conquest of the Aztec and Inca empires opened the way to American gold and silver. On the Dwarkesh Podcast, in an episode published October 1, 2026, military historian Si Sheppard argued that the windfall left Spain worse off over the long run. The silver paid for wars, pushed up prices and, in his view, spared the country the harder work of building banks, capital markets and industry.
The discussion began from a blunt comparison. The conquistadors were after gold and silver. Neither metal produces anything by itself, and the conversation likened them to crypto: valuable because people accept them in exchange, not because they make more goods.
More silver, not more stuff
The argument put to Sheppard went like this. If Europeans used bullion as money, a flood of New World silver changed how much money existed without changing how much food, cloth or housing there was to buy. The result would be inflation, with wealth shifting among Europeans. In effect, Spain was printing money, and printing money does not make more things. Spain did use the metal to help pay for its defense, but at least at first it gained no new productive capacity from the Americas.
Sheppard agreed. "The net impact for Spain was ultimately quite negative," he said. Silver arrived on treasure ships every year, and in his account Spain was "importing inflation," pushing up prices even for staple goods. Much of the metal went into the treasuries of King Charles V and his son Philip II to pay for wars against the Ottomans, campaigns to keep the Netherlands under Spanish control, and the Armada sent to return England to Catholicism. "Most of those ventures, of course, were failures," Sheppard said. He granted that silver paid for the fleets that fought the Ottomans at Lepanto in 1571. But he said the average Spaniard gained little, and that Spanish society "really plateaued and stayed that way for hundreds of years."
Sheppard also said real wages in Spain fell during this period. Research on Spanish prices backs part of the mechanism, but it does not measure wages. In a 2003 working paper, economic historian Mauricio Drelichman tested a "Dutch disease" effect. In that effect, sudden resource wealth raises demand for goods and services that cannot be imported, so their prices climb compared with goods traded internationally. His main estimates cover 1531 to 1600. He found that the ratio of traded to non-traded prices was lower for several decades: 11% lower in New Castile from 1550 to 1580, and 14.2% lower in Valencia from about 1554 to 1577, compared with each region's middle state. Drelichman read this as support for Dutch disease. He also noted that differing regional price baskets and missing trade statistics limit what the paper can say about the whole economy.
Sheppard's larger charge was about institutions. He called silver on tap a "seductive drug" that meant Spain "never developed towards what we call functional capitalism." It did not build the capital markets and independent banks then emerging in the Netherlands and England. Those countries pulled ahead, he said, while Spain and Portugal never fully industrialized in the 19th century and were left "very rural and poor" in the 20th. "Still now, they're catching up from that," he said.
From conquistadors to bureaucrats
Sheppard said many conquistadors "really didn't appreciate what they'd accomplished." Those who survived settled on encomiendas, grants that gave Spanish settlers estates and the labor of local people to farm them. Sheppard described this as a kind of serfdom. Then royal officials arrived from Spain to run what became Mexico, Peru and South America generally. The conquistadors in South America rebelled against that rule, Sheppard said, and had to be put down by force.
The encomienda was disputed within the Spanish empire itself. Documents shown by the Library of Congress include Bartolomé de las Casas's 1528 proposal to take Indigenous communities away from encomenderos and place them directly under the Crown. They also include the New Laws of 1542–1543, which tried to restrict enslavement and colonial abuses while strengthening royal authority. Colonists resisted the New Laws violently, and some provisions were later rescinded.
Sheppard said the discovery and exploitation of a mountain of silver at Potosí, in what is now Bolivia, "put the last piece of the puzzle in place for true globalization." UNESCO's description of the site shows that Potosí was an industrial complex as well as a mine. The mines of Cerro Rico fed refineries and a mint. After 1580, water-powered mills supported refining with mercury, and the system included 22 reservoirs and 140 mills. Indigenous workers supplied through the mita, a system of compulsory labor, sustained production. Sheppard did not discuss this labor system. The city's layout still separates the colonists' districts from the workers' quarters.
Where the silver went
The silver did more than move money around inside Europe. As the discussion put it, China under the Ming dynasty had badly mismanaged its paper money. Nobody trusted it, and holdings could become worthless when a currency was replaced. China wanted a reliable medium of exchange, and Spanish silver supplied one. In return, porcelain, silk, spices and other fine goods flowed out of China. The volume was put at hundreds of tons of real goods, possibly thousands, an estimate offered with open uncertainty. Seen that way, the colonies created no new wealth overall. They were a way for Europeans to get Chinese goods "for free in some sense."
Sheppard extended the point. Once Spain could mine South American silver at scale and understood the Pacific's winds and currents, it sent ships west to Manila, its base in the Philippines. There, Spanish traders met merchants from Japan, Siam and above all China, who brought "goods with real practical value" in exchange for the silver. Spain was buying useful goods with excess money, Sheppard said, and that was not structurally to the country's advantage.
But the trade tied distant economies together. "Trade is no longer trans-Eurasian or even trans-Atlantic, it's trans-global," Sheppard said. In his account, the Ming learned the cost of that in the mid-1640s. Having moved their empire's money onto silver, they faced a cash crisis when silver supplies were cut off or reduced in the first half of the 17th century. With the Manchus "at the gates," he said, the Ming could no longer pay for an army, and the Manchus replaced them as rulers of China.
Virginia's lucky failure
The conversation then contrasted Spain's immediate successes with the English colony in Virginia, founded around the same period. The point raised was that letters from the time complain the Virginia Company was a waste of English money, that settlers were dying and that there seemed to be nothing worth farming or extracting. The suggestion was that Spain's quick success produced an extractive colony that never added productive capacity, while the English, with no bullion to grab, were forced to build productive institutions.
The National Park Service's history of the company confirms the money troubles. Chartered in 1606 as a joint-stock venture meant to earn profits for shareholders, the company struggled with high death rates and supply problems. Its early attempts at manufacturing and resource extraction faltered. Tobacco eventually gave the colony an export, but it did not rescue the company's finances, and it raised money through measures including lotteries. The Crown took control in 1624. The colony survived, but its investors never got the profits they wanted.
Sheppard turned the contrast into a broader argument. The Netherlands and England were "the two latecomers to the game of imperialism," Protestant powers marginalized in Europe, and the Netherlands had "absolutely zero" natural resources. "In that environment, you're forced to innovate," he said. He compared the easy route to playing the lottery: "Be careful what you wish for, because you may just actually get it." Societies that land a quick fix, whether gold, silver or a monopoly crop, become satisfied with it, he said, and then "trapped within an environment that exists solely for that purpose."
His final example was the United States. The South, Sheppard said, put its capital into enslaved people and cash crops: tobacco first, then indigo, sugar and above all cotton. The North had no such option, so investment went into trade, banking, capital markets and industry. When the war came in the 1860s, he said, the North held the advantages it needed to win: a larger population, an industrial base and the capital markets to carry out a winning long-term strategy. That was the lesson Sheppard drew: "having life too easy from the beginning leads to a certain, I don't want to call it laziness, but lack of vision perhaps."