Skip to content
The Daily Triptych270 / 365

27 SEP 2026

Day 270

Premature optimization is the root of all evil.

Donald Knuth · Structured Programming with go to Statements
A wide oil painting of a nude young woman standing mid-calf in a calm lake, body lit by pale morning sun, torso bent slightly forward with arms drawn in toward her chest; soft distant shore behind her.

I · THE OBJECT · BRITISH MUSEUM

September Morn

France · 1912 · Oil on canvas

A lakeside nude shown at the Paris Salon in 1912 travelled through Russia, vanished, and resurfaced decades later — while millions of copies stirred American courts and newspapers.

Enter lesson 6 MIN
A pale blue-grey rectangular block with rounded edges and a subtle gradient, representing nitrogen as a pure element in solid form at very low temperature.

II · THE DISCOVERY · HISTORY OF SCIENCE

Nitrogen

1772 · Daniel Rutherford · United Kingdom

Daniel Rutherford separated nitrogen from the rest of the air in 1772. It turned out to be the most abundant thing we breathe, though it does nothing in our lungs.

Enter lesson 6 MIN
A wide horizontal painting of two women seated at a stone sarcophagus or fountain with Cupid beside them; a coat of arms appears on the vessel.

III · THE WORK · ART HISTORY

Sacred and Profane Love

Titian · 1514 · Oil on canvas

A wide Venetian canvas of 1514 sets two women and Cupid at a stone vessel. The familiar title arrived much later, and may never have been the point.

Enter lesson 6 MIN
Head-and-shoulders portrait of a man in a white pinstriped baseball uniform with navy piping and a navy cap with a red letter, holding a baseball in his right hand near his chest, looking directly at the camera.

IV · THE GAME · MAJOR LEAGUE BASEBALL

Greg Maddux

Pitcher · 3 September 1986 · Chicago Cubs · Atlanta Braves · San Diego Padres · Los Angeles Dodgers

Maddux never threw especially hard. He walked fewer batters in twenty-three seasons than some pitchers walk in six, and won three hundred and fifty-five games across five thousand innings.

Enter lesson 6 MIN

The daily email

Four lessons in your inbox, every morning at seven.

One object, one idea, one masterpiece, one game. Deep links to that day’s pages. Unsubscribe with one click, any time.