Why Leonardo was a saboteur, Gutenberg went broke, and Florence was weird – Ada Palmer

• Leonardo deliberately wrote in mirror code to prevent others from using his discoveries—he wanted to be marveled at by the future, not contribute to human progress
• Gutenberg went bankrupt because mass production existed before distribution networks: he could print 300 Bibles but only sell 7 in his landlocked German town
• The Medici were "merchant scum" who used classical propaganda to flip power dynamics—a French nobleman would enter expecting to condescend, then feel like an uncultured fool surrounded by ancient Greek and lifelike bronze statues
• Europe lost access to papyrus after Rome fell and wrote on dead sheep for 400 years—a book cost as much as a house, which is why most ancient knowledge was lost 400-600 AD when they could only afford to copy 10% of crumbling texts
• The Inquisition executed one person for science (Giordano Bruno) but hundreds of thousands for "Judaizing," and was obsessed with censoring Jansenist treatises about the Trinity while letting Voltaire slide—every era is wrong about what matters

Palmer dismantles the simple story of "Renaissance = rediscovering classics = science" with a much messier 200-year process. Petrarch, living through the Black Death and civil war, looked at selfish Italian lords (think Romeo and Juliet's families) and said: we need leaders like ancient Rome's Brutus, who executed his own sons for treason. Can we recreate the educational environment that produced them? This sparked a library-building boom to assemble what young Cicero and Plato read.

But the uptake was propagandistic. Upstart rulers with no legitimacy dressed up like Roman emperors. The Medici—"merchant scum" three ranks down even among Florence's merchants—used this to flip power dynamics. When a French ambassador visited expecting to condescend to bankers, he walked into a courtyard with lifelike bronze statues, busts of Roman emperors, and a ten-year-old reciting poetry in ancient Greek about Plato's three parts of the soul. Suddenly the nobleman felt like an uncultured fool. The power dynamic flipped: "Give me a bronzesmith, an architect, a Greek teacher, and we'll do the French court like this."

The first generation of "philosopher princes" raised on Cicero started even worse wars. Machiavelli, watching this, realized reading about good men doesn't make you good—you need to use history as a casebook of what worked. This systematic approach to knowledge eventually got applied to nature itself. Francis Bacon proposed the "honeybee" model: gather from nature, process it, produce something sweet and useful for humankind. The scientific method emerged not from rediscovering classics, but from realizing the classics didn't work as intended.

Meanwhile, Gutenberg went bankrupt because he invented mass production before distribution networks existed. He could print 300 Bibles for the cost of one but could only sell 7 in his landlocked German town. The printing press only became viable when printers moved to Venice (the Mediterranean's hub) and invented book fairs. Then came successive waves: pamphlets (the Reformation happened because you could get one from Wittenberg to London in 17 days), newspapers (to fact-check pamphlets), magazines (to fact-check newspapers). One information revolution, 150 years of successive applications—just like computers → internet → smartphones → AI.

The kicker: every era is catastrophically wrong about what matters. The Inquisition held 12 trials of scientists total, executing only Giordano Bruno, while executing hundreds of thousands for "Judaizing." They were obsessed with Jansenist treatises about the Trinity while letting Voltaire circulate. At a ceremonial book burning, they burned Jansenist books instead of the banned Encyclopédie because everyone loved it. The Inquisition even accidentally invented peer review—after Galileo, they decided to verify scientific claims by recreating experiments, making the Vatican the most extensive experimental laboratory in late 17th century Europe.

Palmer's lesson for today: Petrarch didn't create a world that went as he wanted (he'd be horrified by democracy), but he created a world that went well (we can cure the Black Death). You can't control how change unfolds, but resistance matters even when it "fails." Florence's republic fell, but because they fought so hard, the resulting tyranny was weaker and people retained more rights. Partial victory shapes what comes after.