Blog

Blogs, essays, updates, and occasional notes that sit alongside The Butterfly Effect.

An 1850 portrait of Lin Zexu, Imperial Commissioner of the Qing dynasty

Legalised at Gunpoint

Mar 16, 2026 By Andy Barca

In 1836, a Qing official argued for legalising opium to save the empire. The emperor said no. Twenty-two years later, the empire was required by British treaty to permit it.

Depiction of Mansa Musa from the 1375 Catalan Atlas, holding a gold nugget and wearing a golden crown

All the King's Gold

Mar 16, 2026 By Andy Barca

In July 1324, Mansa Musa — king of Mali and holder of more gold than anyone had ever seen in one place — arrived in Cairo with 12,000 servants, 80 camel-loads of gold dust, and no apparent intention of leaving with any of it.

17th-century portrait of the Shunzhi Emperor in imperial court robes

The Boy Who Held the Door

Mar 15, 2026 By Andy Barca

On 15 March 1638, Fulin was born — the ninth son of the Qing ruler Hong Taiji, and a child no one expected to matter. He was crowned emperor at five, began ruling at thirteen, died at twenty-two, and left behind a dynasty that lasted another 251 years.

Peter the Hermit leading crusaders eastward, miniature from Egerton Manuscript 1500, France, circa 1325–1350

The Goose That Went to War

Mar 14, 2026 By Andy Barca

In 1096, a woman set out for Jerusalem from France with a goose from her farm. Peasant crusaders took it as divine guidance. The goose died in northeastern France and never got close to the Holy Land. The people who followed it left a different kind of trail.

Eli Whitney's original cotton gin patent drawing, dated March 14, 1794

Whitney's Bargain

Mar 14, 2026 By Andy Barca

On 14 March 1794, Eli Whitney received a patent for his cotton gin — a crude wooden machine he hoped would reduce slavery. It did the opposite.

Ali and Hamza in single combat at Badr, from the Siyer-i Nebi manuscript, circa 1594

The Caravan That Got Away

Mar 13, 2026 By Andy Barca

On 13 March 624, Muhammad set out to intercept a merchant caravan. The caravan escaped. An army three times his size came out to meet him instead. He had 313 men, 2 horses, and 70 camels.

Urban II at the consecration of the altar of the Cluny monastery

God Wills It

Mar 12, 2026 By Andy Barca

On 12 March 1088, a French monk named Odo was elected pope in a small gathering in Terracina — unable to enter his own city. Seven years later, he launched the First Crusade. He died before he knew it had succeeded.

Muhammad Asad addressing Radio Pakistan

Leopold of Arabia

Mar 11, 2026 By Andy Barca

Born to a rabbinical Jewish family in what is now Ukraine, Leopold Weiss converted to Islam, became a confidant of Ibn Saud, and ended up as one of the intellectual architects of Pakistan. The life is almost too improbable to believe. It is all true.

Bell's laboratory notebook entry for March 10, 1876, recording the first successful telephone transmission

Mr. Watson, Come Here

Mar 10, 2026 By Andy Barca

On 10 March 1876, Alexander Graham Bell spoke six words into a device above a Boston theatre and Thomas Watson heard them from another room. The telephone had just worked for the first time.

Title page of the first edition of The Wealth of Nations, published 9 March 1776

The Invisible Hand's First Draft

Mar 9, 2026 By Andy Barca

On 9 March 1776, Adam Smith published The Wealth of Nations — not the final word on economics, but the first coherent one. The discipline has been arguing with it ever since.