I · THE OBJECT · BRITISH MUSEUM
The Royal Game of Ur
Carved shell and lapis lazuli mark the track of a game played in Ur four and a half millennia ago. The rules survived on a clay tablet dated 2,400 years later.
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5 JAN 2026
Day 5
No man's knowledge here can go beyond his experience.
II · THE IDEA · ARTIFICIAL INTELLIGENCE
Gradient Descent
Training a model means walking downhill in a space with more dimensions than atoms in your body. The metaphor of a landscape is a three-dimensional cartoon of something that has no spatial form at all.
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Written before source checking was enforced · facts in this lesson are unverified
III · THE WORK · ART HISTORY
The Book of Kells
The Book of Kells' Chi Rho page devotes an entire vellum sheet to two Greek letters, with decoration so minutely detailed that scholars still debate whether it was made for magnification.
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