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The Daily Triptych097 / 365

7 APR 2026

Day 97

The rat that has but one hole is quickly taken.

George Herbert · Outlandish Proverbs
A ceramic tile densely patterned with stylised tulips and carnations in cobalt blue, turquoise, emerald green, and a vivid raised red, all under a clear glaze on a white ground.

I · THE OBJECT · BRITISH MUSEUM

Iznik Pottery

İznik, Anatolia · Late 15th–17th century · Underglaze-painted fritware

For half a century Ottoman potters made a red so thick it rose above the glaze surface. Then the recipe was lost, and no kiln has matched it since.

Enter lesson 7 MIN

II · THE IDEA · ARTIFICIAL INTELLIGENCE

Evaluating Models

Systems and judgement · Hendrycks et al., MMLU (2021) · Zheng et al., MT-Bench (2023)

A model scores ninety-two per cent on a published test. That number sits atop a leaderboard, drives adoption decisions, and hides at least three distinct ways the measurement can mislead.

Enter lesson 7 MIN

Written before source checking was enforced · facts in this lesson are unverified

A white marble mausoleum with a central dome and four minarets, reflected in a long rectangular pool lined with dark trees.

III · THE WORK · ART HISTORY

The Taj Mahal

1631 · Marble with pietra dura inlay · 73 metres

The calligraphy grows taller as it climbs, so that from the ground every letter reads the same height. An adjustment made once, in 1631, for every visitor since.

Enter lesson 7 MIN

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