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The Daily Triptych275 / 365

2 OCT 2026

Day 275

No number of sightings of white swans can prove the theory that all swans are white.

Karl Popper · The Logic of Scientific Discovery
A small open manuscript on vellum, pages densely written and painted in tempera and grisaille with passages of gold leaf, sized for holding in the hand.

I · THE OBJECT · BRITISH MUSEUM

Psalter of Bonne de Luxembourg

Medieval France · 1348 · Vellum with tempera and gold

A palm-sized French psalter of 1348, painted by Jean Le Noir and probably made for Bonne de Luxembourg, who died of plague the following year.

Enter lesson 6 MIN
A large brick-shaped handheld telephone with a long antenna protruding from the top, a small speaker grille, a numeric keypad, and a handset body thick enough to require a firm grip.

II · THE DISCOVERY · HISTORY OF SCIENCE

Mobile phone

1973 · Martin Cooper · portable wireless telephone

Martin Cooper demonstrated a handheld mobile phone in 1973, holding a device that weighed two kilograms. A decade later, the same company sold one to the public.

Enter lesson 6 MIN
A dense cluster of four armoured riders on rearing horses, hands and weapons seized on a single banner, faces contorted, the group locked in a tight spiral of limbs and animal necks.

III · THE WORK · ART HISTORY

The Battle of Anghiari

Leonardo da Vinci · 1503 · Fresco

Leonardo began a fresco of men and horses locked on a standard, then left it unfinished. The wall was later overpainted; the composition survives only in later drawings.

Enter lesson 7 MIN
Head-and-shoulders portrait of a man in a white baseball uniform with red and blue trim, a white cap with a red letter, looking directly at the camera with a neutral expression.

IV · THE GAME · MAJOR LEAGUE BASEBALL

Pedro Martinez

Pitcher · 24 September 1992 · Los Angeles Dodgers · Montreal Expos · Boston Red Sox · New York Mets · Philadelphia Phillies

He pitched eight innings in his debut and lost. Eighteen seasons later the career ERA was 2.93, the strikeout total was over three thousand, and the walk rate had fallen by half.

Enter lesson 6 MIN

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