Blog

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

Political Ravishment, or The Old Lady of Threadneedle Street in Danger! by James Gillray, 1797

The Old Lady's Paper

Mar 2, 2026 By Andy Barca

On 2 March 1797, the Bank of England issued its first £1 and £2 banknotes — emergency paper to replace vanishing gold. The crisis measure became permanent. We still live with the consequences.

Engraving of two alleged witches being tried in Salem, Massachusetts, by Howard Pyle, 1893

The Witches of Salem

Mar 1, 2026 By Andy Barca

On 1 March 1692, three women were brought before magistrates in Salem Village, Massachusetts — the first act in a drama that would leave nineteen dead. The trials were small by European standards. The psychology behind them was not.

USS Abraham Lincoln underway in the Arabian Sea

The Last Days of the Republic?

Feb 28, 2026 By Andy Barca

On 28 February 2026, Israel and the United States launched strikes across Iran. Whether this marks the beginning of the end for the Islamic Republic — or another crisis it will survive — nobody yet knows.

The Torture of Cuauhtémoc, painting by Leandro Izaguirre, 1892

The Descending Eagle

Feb 28, 2026 By Andy Barca

On 28 February 1525, the last Aztec emperor Cuauhtémoc was hanged on the orders of Hernán Cortés. What began with 500 soldiers and thirteen horses remade an entire continent.

The Missorium of Theodosius I, a silver ceremonial dish showing the emperor with co-emperors Valentinian II and Arcadius

The Short List

Feb 27, 2026 By Andy Barca

On 27 February 380, Theodosius I issued the Edict of Thessalonica and made Nicene Christianity the only legal religion of the Roman Empire. Christianity had joined a very exclusive club.

Napoleon in his study at the Tuileries

The Flight from Elba

Feb 26, 2026 By Andy Barca

On 26 February 1815, Napoleon escaped Elba and walked back into power without firing a shot. The gamble lasted one hundred days and ended at Waterloo.

Engraving of Samuel Colt, c. 1855

The Equaliser

Feb 25, 2026 By Andy Barca

On 25 February 1836, Samuel Colt received US Patent No. 138 for a revolving-cylinder pistol. The revolver democratised killing and America has been living with the consequences ever since.

The Battle of Pavia

The Emperor's Birthday

Feb 24, 2026 By Andy Barca

On 24 February 1525, Charles V turned twenty-five. His birthday present was the Battle of Pavia, a captured French king, and confirmation that his was the most powerful empire Europe had seen since Rome.

The war in Ukraine

Four Years

Feb 24, 2026 By Andy Barca

On 24 February 2022, Russian forces invaded Ukraine. Four years on, the war grinds on — hundreds of thousands dead, a continent reshaped, and a causal chain that traces back to a suitcase in Taiwan.

The Gutenberg Bible

The Printed Word

Feb 23, 2026 By Andy Barca

On 23 February 1455, a goldsmith's workshop in Mainz finished printing a Latin Bible using movable metal type. Every book, newspaper, and screen that followed owes something to that press.