Blog

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

Trajan's Column in Rome, marble victory column with spiral relief

The World's First Comic Strip

May 12, 2026By Andy Barca

On 12 May 113 AD, Trajan dedicated a thirty-metre marble column in Rome depicting his conquest of Dacia in 2,500 carved figures. The wars it commemorated were Rome at its peak — and the plunder that paid for almost everything.

Photograph of Salvador Dalí in 1939

A Walking Extravaganza in Life and Art

May 11, 2026By Andy Barca

On 11 May 1904, Salvador Dalí was born in Figueres, Catalonia. He became one of the most technically gifted painters of the twentieth century and arguably its greatest self-promoter. The two things were never entirely separable.

Portrait of Amerigo Vespucci wearing a turban

The Man Who Named the World He May Never Have Seen

May 10, 2026By Andy Barca

On 10 May 1497, Amerigo Vespucci allegedly left Cádiz for his first voyage to the Americas — beating Columbus to the mainland by a year. The voyage is almost certainly a fabrication. The continent is named after him anyway.

Photograph of the 1386 Treaty of Windsor document

Still in Force

May 9, 2026By Andy Barca

On 9 May 1386, England and Portugal ratified the Treaty of Windsor, beginning the oldest diplomatic alliance still in force. Six centuries later, it was still working - helping to win the Second World War.

Painting of Joan of Arc at the Siege of Orléans

The War England Almost Won

May 8, 2026By Andy Barca

On 8 May 1429, Joan of Arc lifted the siege of Orléans and sent the English army marching north. England had been close to winning the Hundred Years' War — they had the law, the victories, and the treaty. What they had not accounted for was the girl.

Allegorical revolutionary print of the French people recognizing the Supreme Being

The God Robespierre Built

May 7, 2026By Andy Barca

On 7 May 1794, Robespierre introduced a new state religion to replace Christianity. He had 82 days left to live. The Cult of the Supreme Being is one of the stranger episodes in a Revolution that was already stuffed with strange episodes.

Illustration from a manuscript depiction of Johann Schiltberger's world

Too Young to Kill

May 6, 2026By Andy Barca

In 1396, a Bavarian teenager named Johann Schiltberger was spared execution at Nicopolis because he was sixteen. Over the next thirty-three years he served as a slave to Bayezid I, Tamerlane, and four of Tamerlane's heirs, crossed into Siberia, and walked home.

Coronation portrait of Louis XIV of France by Hyacinthe Rigaud

The Most Beautiful Cage in Europe

May 6, 2026By Andy Barca

On 6 May 1682, Louis XIV moved the French court permanently to Versailles. The palace was not a vanity project. It was the most sophisticated political trap ever built.

Portrait of Kublai Khan from the Yuan imperial album

Xanadu

May 5, 2026By Andy Barca

On 5 May 1260, Kublai Khan was proclaimed Great Khan at Shangdu - the place Coleridge would later imagine as Xanadu. He went on to conquer all of China, found the Yuan dynasty, and invent fiat money. He also started the process that ended his grandfather's empire.