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The Daily Triptych052 / 365

21 FEB 2026

Day 52

We never look at just one thing; we are always looking at the relation between things and ourselves.

John Berger · Ways of Seeing
A bronze helmet, classified as Celtic; the available record provides no reliable visual description beyond its material and object type.

I · THE OBJECT · BRITISH MUSEUM

The Waterloo Helmet

Bronze · Celtic helmet · River Thames

A bronze Celtic helmet from the River Thames survives in the British Museum collection, with a short factual record that leaves much of its former life unsettled.

Enter lesson 4 MIN

II · THE IDEA · ARTIFICIAL INTELLIGENCE

System Prompts and Instruction Hierarchy

Inference · Reinforcement learning from human feedback · Wallace et al., instruction hierarchy (2024)

A system prompt is not a special data structure. It is ordinary tokens placed first, and the model learned during training to treat position as privilege.

Enter lesson 6 MIN

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

A massive stepped pyramid of grey stone, nine terraces stacked and narrowing toward a central dome, surrounded by green landscape and distant mountains.

III · THE WORK · ART HISTORY

The Reliefs of Borobudur

Javanese Buddhist, Sailendra period · 9th century · Andesite stone

Over a kilometre of carved narrative winds upward around nine stacked terraces. Then, at the summit, the reliefs stop — and the architecture makes its argument.

Enter lesson 7 MIN

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